Alvin, Texas Weather Conditions

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Current Conditions

  • 88°
  • Scattered Clouds
  • Wind: ENE 13 mph
  • Humidity: 59%
  • Visibility: 10.0 miles
  • Dew Point: 72°
  • Pressure: 30.01 in. 0
  • Heat Index: 95

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Next 12 Hours

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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Thunderstorm
  • High: 93 °
  • Low: 79 °
  • T-Storms
  • Thursday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 77 °
  • Chance of T-Storms
  • Friday
  • Chance of a Thunderstorm
  • High: 93 °
  • Low: 77 °
  • Chance of T-Storms
  • Saturday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 79 °
  • Chance of T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 77 °
  • Chance of T-Storms

Forecast for Alvin, Texas

Updated: 10:00 AM CDT on August 27, 2014

  • Wednesday

    Overcast with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 93F. Winds from the ENE at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 79F. Winds from the South at 5 to 15 mph. Chance of rain 40% with rainfall amounts near 0.2 in. possible.

  • Thursday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 91F with a heat index of 99F. Winds from the SSE at 5 to 15 mph. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy with a chance of a thunderstorm and a chance of rain. Low of 77F. Winds from the SE at 5 to 15 mph. Chance of rain 30%.

  • Friday

    Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 93F with a heat index of 102F. Winds from the ESE at 5 to 15 mph. Chance of rain 50%.

  • Friday Night

    Overcast with a chance of a thunderstorm and a chance of rain in the evening, then partly cloudy with a chance of a thunderstorm and rain. Low of 77F. Winds from the SE at 5 to 15 mph. Chance of rain 20%.

  • Saturday

    Overcast with a chance of a thunderstorm and rain. High of 90F with a heat index of 99F. Winds from the SSE at 5 to 15 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Saturday Night

    Overcast in the evening, then mostly cloudy. Low of 79F. Winds from the SSE at 5 to 10 mph.

  • Sunday

    Partly cloudy with a chance of a thunderstorm and rain. High of 91F with a heat index of 102F. Winds from the SSE at 10 to 15 mph. Chance of rain 50%.

  • Sunday Night

    Clear. Low of 77F. Winds from the SSE at 5 to 15 mph.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 93F with a heat index of 102F. Winds from the SSE at 5 to 15 mph. Chance of rain 20%.

  • Monday Night

    Clear. Low of 77F. Winds from the SE at 5 to 15 mph.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 93F with a heat index of 99F. Breezy. Winds from the SE at 10 to 20 mph. Chance of rain 40%.

  • Tuesday Night

    Clear with a chance of a thunderstorm. Low of 77F. Winds from the SE at 10 to 15 mph. Chance of rain 40%.

  • Wednesday

    Mostly cloudy with a chance of a thunderstorm. High of 93F. Winds from the SE at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm. Low of 77F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 93F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy. Low of 77F. Winds less than 5 mph.

  • Friday

    Clear with a chance of a thunderstorm. High of 95F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Clear with a chance of a thunderstorm. Low of 75F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Clear with a chance of a thunderstorm. High of 95F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

    Clear. Low of 75F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: CoffeeMuses, Alvin, TX

Updated: 12:05 PM CDT

Temperature: 90.9 °F Dew Point: 89 °F Humidity: 93% Wind: ENE at 9.9 mph Pressure: 29.79 in Hourly Precipitation: - Heat Index: 129 °F Graphs

Location: Texas Gulf flat lands., Alvin, TX

Updated: 12:09 PM CDT

Temperature: 87.8 °F Dew Point: 76 °F Humidity: 68% Wind: NE at 7.8 mph Pressure: 29.67 in Hourly Precipitation: - Heat Index: 99 °F Graphs

Location: Bobby Wright, Alvin, TX

Updated: 12:09 PM CDT

Temperature: 88.7 °F Dew Point: 62 °F Humidity: 41% Wind: NNE at 3.6 mph Pressure: 30.27 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: RogThomTX, Alvin, TX

Updated: 12:09 PM CDT

Temperature: 88.7 °F Dew Point: 76 °F Humidity: 65% Wind: SE at 6.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Stevenwood, Alvin, TX

Updated: 12:02 PM CDT

Temperature: 87.8 °F Dew Point: 77 °F Humidity: 70% Wind: ENE at 5.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 100 °F Graphs

Location: Amateur Radio Station K5UY, ALGOA, TX

Updated: 12:09 PM CDT

Temperature: 87.2 °F Dew Point: 78 °F Humidity: 74% Wind: ENE at 10.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 100 °F Graphs

Location: KF5UKE - Country Acres, Alvin, TX

Updated: 12:09 PM CDT

Temperature: 87.8 °F Dew Point: 77 °F Humidity: 71% Wind: SSE at 4.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 100 °F Graphs

Location: West Road, Alvin, TX

Updated: 12:09 PM CDT

Temperature: 87.8 °F Dew Point: -23 °F Humidity: - Wind: South at 6.1 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: WE5ST - Grid: EL29ih, Alvin, TX

Updated: 12:09 PM CDT

Temperature: 91.5 °F Dew Point: 78 °F Humidity: 65% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 107 °F Graphs

Location: Sun Meadow, Friendswood, TX

Updated: 9:25 AM CDT

Temperature: 85.5 °F Dew Point: 75 °F Humidity: 70% Wind: East at 2.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: Mustang Bayou C619, Alvin, TX

Updated: 11:50 AM CDT

Temperature: 84.0 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: - Heat Index: - Graphs

Location: Westover Park - Torpey, League City, TX

Updated: 12:09 PM CDT

Temperature: 90.2 °F Dew Point: 75 °F Humidity: 62% Wind: ENE at 4.9 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Mosslights.com, League City, TX

Updated: 12:09 PM CDT

Temperature: 87.8 °F Dew Point: 73 °F Humidity: 61% Wind: East at 13.6 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 95 °F Graphs

Location: Shepard Park Plaza, Houston, TX

Updated: 11:58 AM CDT

Temperature: 90.3 °F Dew Point: 70 °F Humidity: 51% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Heat Index: 96 °F Graphs

Location: Westover Park, League City, TX

Updated: 12:09 PM CDT

Temperature: 89.2 °F Dew Point: 77 °F Humidity: 67% Wind: East at 11.9 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Mikeg Weather station on Highland Rd, Santa Fe, TX

Updated: 12:00 PM CDT

Temperature: 86.3 °F Dew Point: 78 °F Humidity: 76% Wind: ENE at 4.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Santa Fe, TX

Updated: 12:09 PM CDT

Temperature: 86.2 °F Dew Point: 26 °F Humidity: 11% Wind: East at 3.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Glenshannon, Friendswood, TX

Updated: 12:09 PM CDT

Temperature: 90.3 °F Dew Point: 77 °F Humidity: 65% Wind: ESE at 3.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: Rustic Oaks, League City, TX

Updated: 11:09 AM MDT

Temperature: 89.0 °F Dew Point: 78 °F Humidity: 69% Wind: ENE at 4.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Friendswood, Friendswood, TX

Updated: 12:09 PM CDT

Temperature: 88.0 °F Dew Point: 74 °F Humidity: 63% Wind: SSW at 3.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Friendswood Weather, Friendswood, TX

Updated: 12:09 PM CDT

Temperature: 87.4 °F Dew Point: 76 °F Humidity: 69% Wind: SE at 4.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Brittany Lakes, League City, TX

Updated: 12:08 PM CDT

Temperature: 88.9 °F Dew Point: 78 °F Humidity: 71% Wind: NNE at 3.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: K5ZXZ Santa Fe, TX

Updated: 12:09 PM CDT

Temperature: 87.1 °F Dew Point: 75 °F Humidity: 68% Wind: ESE at 5.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Bay Colony West, Dickinson, TX

Updated: 12:00 PM CDT

Temperature: 93.4 °F Dew Point: 77 °F Humidity: 59% Wind: Calm Pressure: 29.70 in Hourly Precipitation: - Heat Index: 108 °F Graphs

Location: Friendswood, TX

Updated: 12:09 PM CDT

Temperature: 90.4 °F Dew Point: 77 °F Humidity: 65% Wind: NNW at 2.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 104 °F Graphs

Location: Brittany Lakes, League City, TX

Updated: 12:09 PM CDT

Temperature: 91.8 °F Dew Point: 78 °F Humidity: 64% Wind: ENE at 2.0 mph Pressure: 30.27 in Hourly Precipitation: 0.00 in Heat Index: 107 °F Graphs

Location: Friendswood - Forest Bend, Friendswood, TX

Updated: 12:00 PM CDT

Temperature: 90.0 °F Dew Point: 77 °F Humidity: 66% Wind: ESE at 2.0 mph Pressure: 29.97 in Hourly Precipitation: - Heat Index: 103 °F Graphs

Location: Magnolia Estates, League City, TX

Updated: 12:09 PM CDT

Temperature: 88.5 °F Dew Point: 75 °F Humidity: 65% Wind: East at 6.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Milan Circle, Santa Fe, TX

Updated: 12:09 PM CDT

Temperature: 87.1 °F Dew Point: 77 °F Humidity: 73% Wind: North at 2.0 mph Pressure: 17.72 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Challenger 7 Memorial Park, Webster, TX

Updated: 12:02 PM CDT

Temperature: 86.7 °F Dew Point: 77 °F Humidity: 73% Wind: ENE at 6.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Satsuma Warehouse, Dickinson, TX

Updated: 11:56 AM CDT

Temperature: 87.3 °F Dew Point: 78 °F Humidity: 75% Wind: East at 8.3 mph Pressure: 29.69 in Hourly Precipitation: - Heat Index: 101 °F Graphs

Location: Pine Hollow (Pearwood), Pearland, TX

Updated: 12:09 PM CDT

Temperature: 89.4 °F Dew Point: 56 °F Humidity: 32% Wind: North at 5.4 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Lawrence Place, Pearland, TX

Updated: 12:05 PM CDT

Temperature: 88.3 °F Dew Point: 76 °F Humidity: 66% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Heritage Park, Webster, TX

Updated: 12:09 PM CDT

Temperature: 91.9 °F Dew Point: 25 °F Humidity: 9% Wind: NNW at 5.4 mph Pressure: 29.85 in Hourly Precipitation: - Heat Index: 88 °F Graphs

Location: Nana's House, League City, TX

Updated: 12:05 PM CDT

Temperature: 90.5 °F Dew Point: 79 °F Humidity: 70% Wind: SW at 2.7 mph Pressure: 29.91 in Hourly Precipitation: - Heat Index: 107 °F Graphs

Location: Longwood Park, Friendswood, TX

Updated: 12:05 PM CDT

Temperature: 89.3 °F Dew Point: 76 °F Humidity: 65% Wind: East at 2.0 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: MesoWest LVRPOL TX US UPR, Danbury, TX

Updated: 11:15 AM CDT

Temperature: 87 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Danbury, TX, Liverpool, TX

Updated: 12:00 PM CDT

Temperature: 82.6 °F Dew Point: 77 °F Humidity: 84% Wind: East at 7.0 mph Pressure: 29.97 in Hourly Precipitation: 0.02 in Heat Index: 91 °F Graphs

Location: MesoWest SHELL TX US UPR, League City, TX

Updated: 10:00 AM CDT

Temperature: 83 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Houston/Galveston Texas 
1206 PM CDT Wednesday Aug 27 2014 


Discussion... 
see aviation for 18z taf issuance. 


&& 


Aviation... 
showers and thunderstorms remain confined to the coast this 
afternoon as a broad center of low pressure remains over the Gulf 
of Mexico. High res models agree on the rain staying confined to 
the coast for the most part today. Rain should spread farther 
inland tomorrow as the low begins to loose cohesion. 23 


&& 


Previous discussion... /issued 1008 am CDT Wednesday Aug 27 2014/ 


Discussion... 
weak low pressure centered off the Texas coast east of Corpus Christi 
this morning remains disorganized. A band of showers and thunderstorms 
made it to the coast over the last couple of hours and has since weakened. 
Not real confident as to how far inland development will occur this 
afternoon as some drier air remains to our north. Current configuration 
of higher probability of precipitation in/near the coast and lower probability of precipitation up north looks good. 
We will continue to watch this system and information on it coming 
out of the National Hurricane Center. 


As stated in the discussion earlier this morning...looks like periods 
of showers/thunderstorms can be expected through the end of the week 
and on into the upcoming Holiday weekend as precipitable water values 
rise above 2 inches. The Galveston area could sure use some rain. The 
year-to-date deficit (through the 26th) stands at 17.64 inches. 42 


Previous discussion... /issued 620 am CDT Wednesday Aug 27 2014/ 


Aviation... 


A few showers near the coast this morning...but most activity is 
well offshore. Will see scattered showers and isolated thunderstorms develop inland 
around middle/late morning. Although I am pretty confident that we 
will see scattered activity as far inland as sgr-hou by early after...not 
sure how much coverage we will see at iah and at cxo. Opted to 
just have after/evening vcsh for now. Winds will shift from the NE to east 
during the day and increase across inland areas to 10-12 kts around 
mid-day. 33 


Previous discussion... /issued 411 am CDT Wednesday Aug 27 2014/ 


Discussion... 
water vapor imagery this morning shows clockwise flow around an 
upper level ridge over the central Gulf with a weak stretched out 
TUTT low over the Upper Texas coast. This is sandwiched with another 
ridge centered over the Ozarks. Upper level trough remains over 
the Great Basin with weakly amplified flow across the North Plains 
through New England states. Surface analysis this morning shows trough 
of low pressure off the Upper Texas coast. Radar shows convection 
from the offshore waters of the Upper Texas coast to the la coast. 
NHC gives this disorganized trough a 10 percent chance of tropical 
development over next 5 days. Infrared satellite is showing some colder 
cloud tops with the convection as it begins to move closer to the 
coast. Overall conditions are not favorable for tropical 
development unless the system can become better organized. 


Surface analysis also shows a band of slightly drier air with 
dewpoints in the 60s moving into East Texas from la. GOES sounder precipitable water 
imagery shows lower precipitation water values of less than 1.5 inches 
over the area as well. There should be a substantial gradient in 
thunderstorm chances due to this moisture gradient. Forecast will 
keep higher probability of precipitation of 50/60 percent along the coast and tighten up 
against lower probability of precipitation inland. Do think thunderstorm chances should 
increase along the coast by the afternoon with day time heating 
but again there should be a tight gradient in precipitation. That said 
given high moisture content...some storms could drop 1-2 inches of 
rain in an hour so localized flooding could be an issue especially 
if storms train over the same areas. This will be mainly along the 
coast late this morning into early afternoon. 


Forecast will keep thunderstorm chances in the forecast through 
the end of the week. Upper level low over the Great Basin will 
move into the plains Thursday/Friday which will contribute to a weakness 
in the upper level ridge over Texas. Precipitation water values of around 2 
inches will remain around the area into the weekend. Model 
soundings support convective temperatures in the upper 80s to low 90s so 
thunderstorm development in the early afternoon seems possible 
each day. Best moisture appears to move into the area today and 
then again Friday into Sat. Decided to keep mainly 40/50 probability of precipitation in the 
forecast through Saturday. Precipitation water values start to drop off 
on Sunday into Monday so have 20/30 probability of precipitation in the forecast for those 
days. The upper level trough also lifts out Saturday so ridging 
begins to increase aloft sun into Monday. Early next week both 
GFS/European model (ecmwf) maintain a weak ridge with zonal flow across the 
northern tier states. 


Main hazard today and the next couple of days will be locally 
heavy rainfall mainly along the coast. Trough axis should move 
inland tomorrow into Friday which would still provide lift for 
thunderstorm activity. With precipitation water values possibly topping 
out around 2.4 inches...could easily support storms with 1-2 
inches an hour rain rates. Overall think flash flood threat is 
small except for urban areas with poor drainage or typical low 
lying areas. There may be some quick responses to heavy rainfall 
with houston's bayou system but again would think runoff would 
remain in banks. 


Temperatures will be difficult since the forecast involves 
convection. Cloud cover and convection may hold maximum temperatures today 
into the low 90s along the coast with middle/upper 90s farther inland 
mainly north of Houston. Look for similar gradient in temperatures the 
next couple of days but think maximum temperatures may be closer to the low 
90s farther inland for thur/Fri/Sat. Min temperatures in the 70s looks on 
track for the next week. Maximum temperatures may increase again Monday/Tuesday next 
week as the ridge begins to gradually build over the area. 


39 


Marine... 
east/northeast winds will continue across the coastal waters as a 
trough of low pressure offshore produces numerous showers and 
thunderstorms. This trough will continue to produce showers and 
thunderstorms across the coastal waters through early Friday as it 
drifts to the southwest. Seas offshore have built to 4 to 5 feet 
and winds will be close to caution levels in the 15 to 20 knots range 
today and tonight. Tides will remain slightly above normal this 
week with the moderate onshore flow. 


33 


&& 


Preliminary point temps/pops... 
College Station (cll) 75 95 75 94 76 / 10 30 20 50 30 
Houston (iah) 76 92 77 91 76 / 30 50 20 50 40 
Galveston (gls) 80 89 81 88 81 / 40 50 30 50 50 


&& 


Hgx watches/warnings/advisories... 
Texas...none. 
GM...small craft should exercise caution until 7 PM CDT this evening 
for the following zones: waters from Freeport to the 
Matagorda Ship Channel 20 nm to 60 nm...waters from High 
Island to Freeport 20 to 60 nm. 


&& 


$$ 


Discussion...42 
aviation/marine...23 






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