Alvin Weather Forecast

    • 73
    • 97

    Chance Thunderstorms

    • 70
    • 93

    Rain Showers

    • 69
    • 85

    Chance Thunderstorms

    • 68
    • 86

    Chance Thunderstorms

    • 69
    • 88

    Mostly Sunny

    • 71
    • 91

    Mostly Sunny

Today 5 Sep Inland Berkeley

Sunny. Highs in the mid 90s, except in the lower 90s near lake Moultrie. Heat index Values up to 110. West Winds around 5 Mph.

Tonight 5 Sep Inland Berkeley

Mostly clear in the Evening, then becoming partly cloudy. A chance of Showers. A slight chance of Thunderstorms in the Evening, then a chance of Thunderstorms after midnight. Lows in the mid 70s. Heat index Values up to 107 early in the evening. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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Alvin Temperature Statistics

September Temperature

Moncks Corner Berkeley County (16.8 miles)

  • Lowest 1 September, 2026

    71.6 °F

  • Average September

    80.7 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Moncks Corner Berkeley County (16.8 miles)

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  • Average Low 2021–2026

    55.4 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    75.5 °F
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