National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Houston, Hooks Memorial Airport (KDWH)

Lat: 30.07°NLon: 95.56°WElev: 151ft.

Fair

89°F

32°C

Humidity 59%
Wind Speed S 8 mph
Barometer 29.96 in (1014.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 20 Aug 8:53 pm CDT
Extended Forecast for

Tomball TX

Heat Advisory August 20, 09:12pm until August 21, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 20, 09:12pm until August 21, 07:00pm

    NOW until 7:00pm Fri

    Heat Advisory

  • Tonight

    Low: 78 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny and hot, with a high near 102. Heat index values as high as 109. Southwest wind around 5 mph.

    High: 102 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 78. South wind around 5 mph.

    Low: 78 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly sunny and hot, with a high near 103. Heat index values as high as 112. Southwest wind around 5 mph becoming calm.

    High: 103 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 102.

    High: 102 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78.

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 101.

    High: 101 °F

    Hot

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 78. Southwest wind 5 to 10 mph.
Friday
Patchy fog before 8am. Otherwise, mostly sunny and hot, with a high near 102. Heat index values as high as 109. Southwest wind around 5 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 78. South wind around 5 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly sunny and hot, with a high near 103. Heat index values as high as 112. Southwest wind around 5 mph becoming calm.
Saturday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 102.
Sunday Night
Mostly clear, with a low around 78.
Monday
Sunny and hot, with a high near 101.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Mostly sunny and hot, with a high near 100.
Tuesday Night
Partly cloudy, with a low around 77.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Mostly sunny and hot, with a high near 100.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tomball TX
 30.09°N 95.6°W (Elev. 171 ft)
Last Update:
7:20 pm CDT Aug 20, 2026
Forecast Valid:
9pm CDT Aug 20, 2026-6pm CDT Aug 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation