Sam Houston National Forest Weather Forecast

    • 75
    • 97

    Slight Chance Thunderstorms

    • 74
    • 96

    Slight Chance Thunderstorms

    • 73
    • 95

    Slight Chance Thunderstorms

    • 73
    • 95

    Mostly Sunny

    • 73
    • 93

    Partly Sunny

    • 72
    • 93

    Slight Chance Thunderstorms

Today 12 Sep San Jacinto

Mostly sunny with a slight chance of Showers and Thunderstorms. Hot with Highs in the mid 90s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 110.

Tonight 12 Sep San Jacinto

Partly cloudy. Near steady temperature in the mid 70s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sam Houston National Forest Temperature Statistics

September Temperature

Conroe, Montgomery County Airport (16.2 miles)

  • Lowest 5 September, 2026

    73.7 °F

  • Average September

    83.9 °F

  • Highest 8 September, 2026

    98.7 °F

Climate (2021–2026)

Conroe, Montgomery County Airport (16.2 miles)

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  • Average Low 2021–2026

    58.9 °F

  • Average 2021–2026

    70 °F

  • Average High 2021–2026

    81.7 °F
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