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

La Porte Municipal Airport (KT41)

Lat: 29.67°NLon: 95.06°WElev: 25ft.

Fair

79°F

26°C

Humidity 89%
Wind Speed SW 3 mph
Barometer 29.91 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 7 Sep 2:55 am CDT
Extended Forecast for

Mont Belvieu TX

  • Overnight

    Overnight: Mostly clear, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Clear

  • Labor Day

    Labor Day: A slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind. Chance of precipitation is 20%.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77. South wind around 5 mph becoming calm.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Sunny, with a high near 93. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. South wind around 5 mph becoming calm.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 77. Calm wind.
Labor Day
A slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 77. South wind around 5 mph becoming calm.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 2pm. Sunny, with a high near 93. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm.
Wednesday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90.
Thursday Night
Partly cloudy, with a low around 77.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 77.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 78.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Mont Belvieu TX
 29.84°N 94.9°W (Elev. 36 ft)
Last Update:
1:41 am CDT Sep 7, 2026
Forecast Valid:
3am CDT Sep 7, 2026-6pm CDT Sep 13, 2026
 
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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