Katy, Texas Weather Conditions

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Current Conditions

  • 81°
  • Scattered Clouds
  • Wind: Calm
  • Humidity: 84%
  • Visibility: 10.0 miles
  • Dew Point: 75°
  • Pressure: 29.88 in. +
  • Heat Index: 86

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Next 12 Hours

6  pm
9  pm
12  am
3  am
6  am
Overcast
Overcast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
81°
76°
77°
75°
74°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of a Thunderstorm
  • High: 92 °
  • Low: 74 °
  • Chance of T-Storms
  • Saturday
  • Partly Cloudy
  • High: 95 °
  • Low: 74 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 96 °
  • Low: 76 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 95 °
  • Low: 74 °
  • Partly Cloudy
  • Tuesday
  • Clear
  • High: 94 °
  • Low: 73 °
  • Clear

Forecast for Katy, Texas

Updated: 3:58 PM CDT on September 3, 2015

  • Tonight

    Partly cloudy. A 30 percent chance of showers and thunderstorms early in the evening...then a 30 percent chance in the late evening and overnight. Patchy fog late. Lows in the mid 70s. Southeast winds 5 to 10 mph.

  • Friday

    Patchy fog early in the morning. Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 90s. Southeast winds 5 to 10 mph.

  • Friday Night

    Partly cloudy. A 30 percent chance of showers and thunderstorms early in the evening. Lows in the mid 70s. South winds 5 to 10 mph.

  • Saturday

    Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 90s. South winds 5 to 10 mph. Heat index readings 102 to 107.

  • Saturday Night

    Partly cloudy. Lows in the mid 70s. South winds 5 to 10 mph.

  • Sunday

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the mid 90s.

  • Sunday Night

    Partly cloudy. Lows in the mid 70s.

  • Labor Day

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the mid 90s.

  • Monday Night

    Partly cloudy. Lows in the mid 70s.

  • Tuesday

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the mid 90s.

  • Tuesday Night

    Partly cloudy. Lows in the mid 70s.

  • Wednesday

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the lower 90s.

  • Wednesday Night

    Partly cloudy. Lows in the mid 70s.

  • Thursday

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the lower 90s.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Vineyard Meadows, Katy, TX

Updated: 6:15 PM CDT

Temperature: 80.6 °F Dew Point: 74 °F Humidity: 80% Wind: Calm Pressure: 29.79 in Hourly Precipitation: - Heat Index: 86 °F Graphs

Location: Waterstone, Katy, TX

Updated: 6:18 PM CDT

Temperature: 80.2 °F Dew Point: 76 °F Humidity: 88% Wind: Calm Pressure: 29.54 in Hourly Precipitation: - Heat Index: 86 °F Graphs

Location: Westfield, Katy, TX

Updated: 6:15 PM CDT

Temperature: 76.5 °F Dew Point: 54 °F Humidity: 46% Wind: North at - Pressure: 29.94 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Westfield, Katy, TX

Updated: 6:20 PM CDT

Temperature: 82.4 °F Dew Point: 77 °F Humidity: 83% Wind: North at - Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Stonecross Terrace Lane, Katy, TX

Updated: 6:15 PM CDT

Temperature: 77.5 °F Dew Point: 71 °F Humidity: 80% Wind: North at - Pressure: 29.57 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Westlake Forest, Houston, TX

Updated: 6:09 PM CDT

Temperature: 82.8 °F Dew Point: 79 °F Humidity: 89% Wind: South at 1.7 mph Pressure: 29.68 in Hourly Precipitation: - Heat Index: 94 °F Graphs

Location: Barker Ridge, Houston, TX

Updated: 6:15 PM CDT

Temperature: 79.5 °F Dew Point: 76 °F Humidity: 89% Wind: North at - Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Williamsburg Settlement, Katy, TX

Updated: 6:15 PM CDT

Temperature: 80.8 °F Dew Point: 73 °F Humidity: 76% Wind: North at - Pressure: 29.90 in Hourly Precipitation: 0.01 in Heat Index: 85 °F Graphs

Location: West Lake, Houston, TX

Updated: 6:18 PM CDT

Temperature: 81.7 °F Dew Point: 74 °F Humidity: 78% Wind: West at 2.7 mph Pressure: 29.54 in Hourly Precipitation: - Heat Index: 88 °F Graphs

Location: Barker Village, Houston, TX

Updated: 6:15 PM CDT

Temperature: 80.4 °F Dew Point: 74 °F Humidity: 80% Wind: North at - Pressure: 29.93 in Hourly Precipitation: - Heat Index: 85 °F Graphs

Location: Deerfield Village, Houston, TX

Updated: 6:15 PM CDT

Temperature: 81.5 °F Dew Point: 76 °F Humidity: 82% Wind: North at - Pressure: 29.71 in Hourly Precipitation: - Heat Index: 88 °F Graphs

Location: Deerfield Village, Houston, TX

Updated: 6:11 PM CDT

Temperature: 80.1 °F Dew Point: 74 °F Humidity: 82% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Deerfield Village, Houston, TX

Updated: 6:15 PM CDT

Temperature: 79.3 °F Dew Point: 74 °F Humidity: 84% Wind: North at - Pressure: 29.71 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Lakes Of Pine Forest, Houston, TX

Updated: 6:20 PM CDT

Temperature: 81.9 °F Dew Point: 77 °F Humidity: 85% Wind: North at - Pressure: 29.90 in Hourly Precipitation: - Heat Index: 90 °F Graphs

Location: Nottingham Country, Katy, TX

Updated: 6:15 PM CDT

Temperature: 78.1 °F Dew Point: 62 °F Humidity: 57% Wind: North at - Pressure: 30.33 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Forest Ridge Point, Houston, TX

Updated: 6:15 PM CDT

Temperature: 81.3 °F Dew Point: 76 °F Humidity: 83% Wind: North at - Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Dave's Corner, Katy, TX

Updated: 6:20 PM CDT

Temperature: 82.0 °F Dew Point: 82 °F Humidity: 99% Wind: Calm Pressure: 26.80 in Hourly Precipitation: 0.02 in Heat Index: 94 °F Graphs

Location: Krystal Lake Estates, Houston, TX

Updated: 6:15 PM CDT

Temperature: 84.2 °F Dew Point: 79 °F Humidity: 83% Wind: North at - Pressure: 29.94 in Hourly Precipitation: - Heat Index: 96 °F Graphs

Location: Canyon Lakes West, Cypress, TX

Updated: 5:20 PM MDT

Temperature: 83.5 °F Dew Point: 78 °F Humidity: 84% Wind: East at 1.0 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: Westgate, Cypress, TX

Updated: 6:20 PM CDT

Temperature: 78.3 °F Dew Point: 77 °F Humidity: 96% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.07 in Heat Index: 81 °F Graphs

Location: Cimarron, Katy, TX

Updated: 6:18 PM CDT

Temperature: 77.8 °F Dew Point: 73 °F Humidity: 85% Wind: East at 2.2 mph Pressure: 29.73 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Westminster Landing, Houston, TX

Updated: 5:40 PM CDT

Temperature: 76.8 °F Dew Point: 74 °F Humidity: 90% Wind: WNW at 2.0 mph Pressure: 29.82 in Hourly Precipitation: 0.06 in Heat Index: 78 °F Graphs

Location: CLW - Grove, Cypress, TX

Updated: 6:18 PM CDT

Temperature: 79.2 °F Dew Point: 75 °F Humidity: 88% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.13 in Heat Index: 83 °F Graphs

Location: Feron Lane, Cypress, TX

Updated: 6:16 PM CDT

Temperature: 80.8 °F Dew Point: 71 °F Humidity: 72% Wind: North at - Pressure: 29.72 in Hourly Precipitation: 0.17 in Heat Index: 85 °F Graphs

Location: Canyon Lakes West, Cypress, TX

Updated: 6:05 PM CDT

Temperature: 80.6 °F Dew Point: 69 °F Humidity: 72% Wind: North at - Pressure: 29.72 in Hourly Precipitation: 0.24 in Heat Index: 84 °F Graphs

Location: Windsor Park Estates, Houston, TX

Updated: 6:20 PM CDT

Temperature: 82.3 °F Dew Point: 76 °F Humidity: 81% Wind: North at 1.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Nottingham Country Section 8, Katy, TX

Updated: 6:06 PM CDT

Temperature: 81.0 °F Dew Point: 79 °F Humidity: 94% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.12 in Heat Index: 89 °F Graphs

Location: Canyon Lakes West, Cypress, TX

Updated: 6:19 PM CDT

Temperature: 78.9 °F Dew Point: 74 °F Humidity: 85% Wind: NE at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.11 in Heat Index: 82 °F Graphs

Location: Windsor Park South, Houston, TX

Updated: 6:20 PM CDT

Temperature: 82.2 °F Dew Point: 77 °F Humidity: 85% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Cinco Ranch, Katy, TX

Updated: 6:15 PM CDT

Temperature: 80.7 °F Dew Point: 79 °F Humidity: 94% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: APRSWXNET, Katy, TX

Updated: 5:59 PM CDT

Temperature: 81 °F Dew Point: 79 °F Humidity: 94% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Addicks, Houston, TX

Updated: 6:20 PM CDT

Temperature: 87.8 °F Dew Point: 78 °F Humidity: 71% Wind: North at - Pressure: 29.96 in Hourly Precipitation: - Heat Index: 100 °F Graphs

Location: Heritage Towne Lake, Cypress, TX

Updated: 6:20 PM CDT

Temperature: 77.5 °F Dew Point: 76 °F Humidity: 94% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.46 in Heat Index: 79 °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 
325 PM CDT Thursday Sep 3 2015 


Discussion... 
scattered showers continue to develop across southeast Texas and precipitation is 
again expected to wane toward sunset. Had some patchy dense fog 
early this morning and conditions look somewhat favorable for some 
patchy fog to develop again. Will add some patchy fog to the 
weather grids early Friday. Precipitable water values are expected to remain 
between 1.80 and 2.10 inches on Friday but convective temperatures are 
expected to warm to around 89-90 degrees as upper level ridging 
expands into southeast Texas. Am still expecting scattered rain showers to develop with 
heating. Rain chances are expected to diminish over the weekend as 
upper level ridging builds over the state. Precipitable water values remain 
between 1.8-1.9 inches over the weekend so can't rule out isolated/scattered 
rain showers activity but building heights will inhibit widespread 
convection. Temperatures will also warm a bit over the weekend and forecast 
soundings support temperatures in the upper 90s over the northwest zones and middle 
90s over the central zones. The ridge retreats west early next 
week and a weakness over the central Gulf will shift west but 
never get close enough to southeast Texas to generate much in the way of 
precipitation. Temperatures will cool a little as heights fall. Moisture levels 
drop to around 1.7 inches which is probably just enough to 
generate isolated showers. Some disagreements between the GFS and 
European model (ecmwf) by the middle of next week as the European model (ecmwf) brings a series of 
S/waves into the region that help to carve out a fairly deep trough 
over the central U.S.. this pattern would bring a good chance of 
rain back to southeast Texas Thursday/Friday of next week. The GFS keeps the trough 
further east and also maintains upper level ridging over the 
Desert Southwest. The ridge will continue to exert some 
subsidence over the region. It's a long way off so just blended 
the two solutions for the end of next week. 43 


&& 


Marine... 
as high pressure at all levels exerts more of an influence over the 
region...the general trend will be for weak onshore winds over low 
seas/early day chances for widely scattered showers. Over the 
Holiday weekend...average southerlies at or around 10 knots...smooth 
Bay waters with general 1 to 2 foot offshore sea heights. There will 
be a slight to low chance for boaters and beach go'ers to experience 
a passing shower or thunderstorm through Labor Day. Next work week 
storm chances may go up if an area of disturbed weather in 
the central Gulf propagates westward. 31 


&& 


Preliminary point temps/pops... 
College Station (cll) 75 93 76 96 76 / 10 20 10 20 10 
Houston (iah) 75 92 76 94 76 / 30 30 30 30 10 
Galveston (gls) 79 88 80 90 80 / 30 40 20 30 20 


&& 


Hgx watches/warnings/advisories... 
Texas...none. 
GM...none. 
&& 


$$ 






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