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

Hazardous Weather Conditions

Current conditions at

Houston, Sugar Land Municipal / Hull Field Airport (KSGR)

Lat: 29.62°NLon: 95.66°WElev: 82ft.

Fair

93°F

34°C

Humidity 56%
Wind Speed W 7 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 21 Aug 11:53 am CDT
Extended Forecast for

Katy TX

Heat Advisory August 21, 12:05pm until August 22, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 21, 12:05pm until August 22, 07:00pm

    NOW until 7:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 101 °F

    Hot

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 78. South wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear
    then 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 101. Heat index values as high as 106. Southwest wind around 5 mph becoming south in the afternoon.

    High: 101 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 78. South wind 5 to 10 mph.

    Low: 78 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny and hot, with a high near 100. Southwest wind 5 to 10 mph becoming south in the afternoon.

    High: 100 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79.

    Low: 79 °F

    Mostly Clear

  • Monday

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

    High: 101 °F

    Hot

  • Monday Night

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

    Low: 78 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 101. Heat index values as high as 109. South wind around 5 mph.
Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 78. South wind 5 to 10 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 101. Heat index values as high as 106. Southwest wind around 5 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 78. South wind 5 to 10 mph.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny and hot, with a high near 100. Southwest wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Mostly clear, with a low around 79.
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 101.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
Mostly sunny and hot, with a high near 101.
Wednesday Night
Partly cloudy, 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:
Katy TX
 29.79°N 95.81°W (Elev. 138 ft)
Last Update:
11:40 am CDT Aug 21, 2026
Forecast Valid:
12pm CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation