Galveston, Texas Weather Conditions

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Current Conditions

  • 91°
  • Clear
  • Wind: South 16 mph
  • Humidity: 68%
  • Visibility: 10.0 miles
  • Dew Point: 79°
  • Pressure: 30.01 in. 0
  • Heat Index: 108

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Next 12 Hours

1  pm
4  pm
7  pm
10  pm
1  am
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
90°
90°
86°
84°
84°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 82 °
  • Chance of T-Storms
  • Thursday
  • Chance of a Thunderstorm
  • High: 93 °
  • Low: 82 °
  • Chance of a Thunderstorm
  • Friday
  • Partly Cloudy
  • High: 93 °
  • Low: 81 °
  • Partly Cloudy
  • Saturday
  • Clear
  • High: 91 °
  • Low: 81 °
  • Clear
  • Sunday
  • Clear
  • High: 91 °
  • Low: 81 °
  • Clear

Forecast for Galveston, Texas

Updated: 10:00 AM CDT on August 19, 2014

Heat advisory in effect until 7 PM CDT this evening...
  • Wednesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F with a heat index of 104F. Winds from the SSE at 10 to 15 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain after midnight. Low of 82F with a heat index of 97F. Breezy. Winds from the SSE at 15 to 20 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 93F with a heat index of 104F. Winds from the South at 10 to 15 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy. Low of 82F with a heat index of 97F. Winds from the South at 10 to 15 mph.

  • Friday

    Partly cloudy in the morning, then clear. High of 93F with a heat index of 104F. Winds from the SSE at 5 to 15 mph.

  • Friday Night

    Clear. Low of 81F with a heat index of 97F. Winds from the SSE at 5 to 15 mph.

  • Saturday

    Partly cloudy in the morning, then clear. High of 91F with a heat index of 102F. Winds from the SE at 5 to 15 mph.

  • Saturday Night

    Clear. Low of 81F with a heat index of 95F. Winds from the SSE at 10 to 15 mph.

  • Sunday

    Clear. High of 91F with a heat index of 97F. Winds from the SE at 5 to 15 mph.

  • Sunday Night

    Clear. Low of 81F with a heat index of 97F. Winds from the SSE at 5 to 15 mph.

  • Monday

    Partly cloudy. High of 93F with a heat index of 99F. Winds from the ESE at 5 to 15 mph.

  • Monday Night

    Clear with a chance of a thunderstorm. Low of 81F with a heat index of 97F. Winds from the South at 5 to 15 mph. Chance of rain 20%.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 93F. Winds from the NNW at 5 to 15 mph shifting to the SE in the afternoon. Chance of rain 20%.

  • Tuesday Night

    Clear. Low of 81F. Winds from the ESE at 5 to 15 mph.

  • Wednesday

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

  • Wednesday Night

    Clear. Low of 81F. Winds less than 5 mph.

  • Thursday

    Clear. High of 91F. Winds from the NE at 5 to 10 mph.

  • Thursday Night

    Clear. Low of 79F. Winds less than 5 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm. High of 91F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Clear. Low of 79F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Heat Advisory  Statement as of 4:37 am CDT on August 20, 2014


... Heat advisory remains in effect until 7 PM CDT this evening...

* event... heat index readings of 105 to 110.

* Timing... by 10 am readings should exceed 103 and peak between
noon and 5 PM then fall slowly during the early evening.

* Impact... overheating and dehydration can quickly occur if you
will be outdoors today. It can be difficult to recognize the
signs of heat exhaustion on yourself... so plan to take
frequent breaks. You may recognize the signs of heat
exhaustion more readily in others.

Precautionary/preparedness actions...

Know the signs and symptoms of heat exhaustion... heavy sweating...
fatigue... confusion... headache... pale and clammy skin... thirst...
dizziness... nausea and vomiting... rapid heartbeat... cramps or
weakness.

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to early morning or
evening. Wear light weight and loose fitting clothing when
possible and drink plenty of water. Be sure to drink plenty of
water hours before strenuous activity and then during.

To reduce risk during outdoor work... the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 911.

Each year... a number of fatalities occur nationwide due to
children accidentally being left in vehicles during the Summer
months. In the past dozen years... 500 children have died due to
hyperthermia after being left in or gaining access to cars. Never
leave children or pets unattended in a vehicle not even for a
minute. Remember... beat the heat... check the backseat.





 Special Statement  Statement as of 4:39 am CDT on August 20, 2014


... High heat index values across southeast Texas this afternoon...

The combination of warm temperatures and high dew points will produce
afternoon heat index values of 100 and 110 degrees this afternoon
across much of southeast Texas. The hottest conditions are
expected mainly between 1 PM and 6 PM CDT.

Take extra precautions if you work or spend time outside. If possible...
slow down... reduce... or reschedule strenuous outdoor activities until
the coolest part of the day. Wear light weight... loose fitting... and
light colored clothing to reflect heat and sunlight. Drink plenty of
water. Avoid any alcoholic and caffeinated beverages.

Young children... disabled adults and pets should never be left unattended
in vehicles under any circumstances. Car interiors on hot Summer days
can reach lethal temperatures in a matter of minutes.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Peaceful Valley, Galveston, TX

Updated: 11:22 AM CDT

Temperature: 89.2 °F Dew Point: 81 °F Humidity: 77% Wind: SW at 9.9 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 108 °F Graphs

Location: Tiki Island ( Buoy 46), Tiki Island, TX

Updated: 11:32 AM CDT

Temperature: 87.5 °F Dew Point: 79 °F Humidity: 75% Wind: WSW at 8.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: H2O House, Tiki Island, TX

Updated: 11:26 AM CDT

Temperature: 86.8 °F Dew Point: 80 °F Humidity: 80% Wind: SSE at 16.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Texas City, TX

Updated: 11:28 AM CDT

Temperature: 88.6 °F Dew Point: 79 °F Humidity: 72% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: Pirates Beach Galveston, Galveston, TX

Updated: 11:33 AM CDT

Temperature: 91.8 °F Dew Point: 83 °F Humidity: 75% Wind: SSW at 6.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 116 °F Graphs

Location: Pirate's Cove, Galveston, TX

Updated: 11:25 AM CDT

Temperature: 89.6 °F Dew Point: 80 °F Humidity: 74% Wind: South at 8.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 107 °F Graphs

Location: Palm Beach, Galveston, TX

Updated: 11:20 AM CDT

Temperature: 95.2 °F Dew Point: 78 °F Humidity: 58% Wind: West at 7.3 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 112 °F Graphs

Location: Crystal Beach Fire Rescue, Galveston, TX

Updated: 11:19 AM CDT

Temperature: 89.2 °F Dew Point: 77 °F Humidity: 67% Wind: SSE at 11.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: San Leon, San Leon, TX

Updated: 11:33 AM CDT

Temperature: 92.9 °F Dew Point: 80 °F Humidity: 66% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 112 °F Graphs

Location: Lafitte's Landing-Crystal Beach, Bolivar Peninsula, TX

Updated: 11:33 AM CDT

Temperature: 88.3 °F Dew Point: 78 °F Humidity: 71% Wind: SSE at 12.3 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Whispering Lakes Ranch, League City, TX

Updated: 11:33 AM CDT

Temperature: 91.8 °F Dew Point: 80 °F Humidity: 69% Wind: South at 10.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 111 °F Graphs

Location: Milan Circle, Santa Fe, TX

Updated: 11:33 AM CDT

Temperature: 89.1 °F Dew Point: 80 °F Humidity: 74% Wind: SSW at 12.0 mph Pressure: 18.12 in Hourly Precipitation: 0.00 in Heat Index: 106 °F Graphs

Location: K5ZXZ Santa Fe, TX

Updated: 11:33 AM CDT

Temperature: 89.7 °F Dew Point: 79 °F Humidity: 70% Wind: SE at 1.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 105 °F Graphs

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

Updated: 11:30 AM CDT

Temperature: 89.0 °F Dew Point: 81 °F Humidity: 77% Wind: South at 5.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 108 °F Graphs

Location: South Shore Harbour, League City, TX

Updated: 11:33 AM CDT

Temperature: 92.5 °F Dew Point: 76 °F Humidity: 59% Wind: West at 2.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 105 °F Graphs

Location: Santa Fe, TX

Updated: 11:33 AM CDT

Temperature: 88.1 °F Dew Point: 29 °F Humidity: 12% Wind: SSW at 4.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: South Shore Harbour, League City, TX

Updated: 11:30 AM CDT

Temperature: 95.3 °F Dew Point: 79 °F Humidity: 60% Wind: SW at 7.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 114 °F Graphs

Location: Satsuma Warehouse, Dickinson, TX

Updated: 11:24 AM CDT

Temperature: 94.3 °F Dew Point: 80 °F Humidity: 64% Wind: East at 8.3 mph Pressure: 29.71 in Hourly Precipitation: - Heat Index: 114 °F Graphs

Location: Harbor Park, League City, TX

Updated: 11:29 AM CDT

Temperature: 94.8 °F Dew Point: 79 °F Humidity: 60% Wind: SW at 4.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 112 °F Graphs

Location: Bay Colony West, Dickinson, TX

Updated: 11:30 AM CDT

Temperature: 93.6 °F Dew Point: 79 °F Humidity: 63% Wind: SSW at 9.4 mph Pressure: 29.73 in Hourly Precipitation: - Heat Index: 111 °F Graphs

Location: Castle Under the Oaks, League City, TX

Updated: 11:30 AM CDT

Temperature: 92.7 °F Dew Point: 76 °F Humidity: 58% Wind: South at 6.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 105 °F Graphs

Location: Sami and Ally's Backyard, League City, TX

Updated: 11:28 AM CDT

Temperature: 94.0 °F Dew Point: 79 °F Humidity: 62% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 112 °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 
1108 am CDT Wednesday Aug 20 2014 


Discussion... 
development starting to spread over inland areas at this time but so far 
coverage not quite as pronounced today as it was yesterday. Deep- 
er moisture offshore appears to be moving in a little tad slower 
than previously thought. However still thinking that forecast area will see 
scattered/numerous convection this afternoon/early evening so no real change to 
going forecast with this update. 41 


&& 


Previous discussion... /issued 405 am CDT Wednesday Aug 20 2014/ 


Low light satellite showing mostly cirrus hanging around tonight 
with breaks appearing across the area. 250 mb hand analysis for 0z 
today shows southeast Texas again in diffluent flow thanks to 
anticyclonic flow to our southwest in Mexico along with a weak 
shear axis just to the east of southeast Texas. At 500 mb a 
shortwave was analyzed that is forecasted to shear out and move 
into the Dallas/ Fort Worth area this afternoon. Current precipitable water 
values are around 1.40" inland with precipitable waters  near 2.00" over the 
waters (according to GOES sounder). 


Another tricky forecast this afternoon as many models showing 
conflicting data. In general... models do agree on bringing the 
2.00"+ precipitable water air into the area this afternoon and weak positive vorticity advection moving 
over this afternoon. GFS forecast soundings aren't extremely 
supportive for rain. Precipitable waters  for kcll are 1.87" with a k index of 
30. The NAM forecast soundings on the other hand do support rain. 
For kcll the NAM is forecasting a 1.99" precipitable water with a k index of 37. 
Ironically the GFS precipitation field shows more rain than the NAM. The 
Omega fields for the NAM do show lift moving into the central 
zones around noon and moving inland this afternoon. The GFS only 
shows very weak lift at best. High res models for the most part 
show coverage starting around noon in the coastal counties and 
then push it northward this afternoon. The disagreement is in the 
placement. Given the current upper level maps... upper level 
lift... and moisture it looks that most of the area will see a 
chance of rain today. The lowest chances towards Jackson County 
where there are slightly warmer 850 temperatures (more capping). 
Have also raised probability of precipitation for today given incoming high moisture 
values... weak upper level diffluence... and wedge of positive vorticity advection moving 
overhead. 


On Thursday models quickly begin to build ridging into the area 
from the East. Heights on Thursday afternoon rise to 594 dm. 
Forecast soundings at this time also develop a cap and bring lower 
precipitable water air into the area (1.40" - 1.60"). This will bring an end to 
the rain chances on Thursday. The ridge remains in close enough 
proximity to the area through Saturday to keep rain chances out of 
the forecast. By Sunday the ridge may drift far enough north to 
allow a return to afternoon showers and thunderstorms to the area. 
Definitely by the start of the next work week this looks possible. 
23 


&& 


Preliminary point temps/pops... 
College Station (cll) 96 77 98 77 98 / 50 10 10 10 0 
Houston (iah) 96 78 96 77 98 / 50 10 10 10 10 
Galveston (gls) 92 84 92 83 92 / 40 20 10 10 10 


&& 


Hgx watches/warnings/advisories... 
Texas...heat advisory until 7 PM CDT this evening for the following 
zones: Brazoria...Chambers...Galveston...Jackson... 
Matagorda. 


GM...none. 
&& 


$$ 






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