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

Hazardous Weather Conditions

Current conditions at

La Porte Municipal Airport (KT41)

Lat: 29.67°NLon: 95.06°WElev: 25ft.

Fair

81°F

27°C

Humidity 89%
Wind Speed NW 3 mph
Barometer 30.04 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 23 Aug 8:35 am CDT
Extended Forecast for

3 Miles SW Mont Belvieu TX

Heat Advisory August 23, 08:47am until August 24, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 23, 08:47am until August 24, 07:00pm

    NOW until 7:00pm Mon

    Heat Advisory

  • Today

    High: 100 °F

    Slight Chance
    T-storms then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 79. Southwest wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. Heat index values as high as 110. Southwest wind 5 to 10 mph becoming south in the afternoon.

    High: 98 °F

    Hot

  • Monday Night

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

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 98. Southwest wind 5 to 10 mph becoming south in the afternoon.

    High: 98 °F

    Hot

  • Tuesday Night

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

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80.

    Low: 80 °F

    Mostly Clear

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 10am and 11am. Sunny and hot, with a high near 100. Heat index values as high as 109. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 79. Southwest wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 98. Heat index values as high as 110. Southwest wind 5 to 10 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 98. Southwest wind 5 to 10 mph becoming south in the afternoon.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 80.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 78.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Friday Night
Mostly clear, with a low around 78.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Mont Belvieu TX
 29.82°N 94.92°W (Elev. 23 ft)
Last Update:
7:31 am CDT Aug 23, 2026
Forecast Valid:
8am CDT Aug 23, 2026-6pm CDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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