Jonah Weather Forecast

    • 82
    • 102

    Slight Chance Thunderstorms

    • 80
    • 98

    Hot

    • 79
    • 96

    Mostly Sunny

    • 76
    • 97

    Hot

    • 76
    • 97

    Hot

    • 77
    • 98

    Hot

Today 22 Jul Williamson

Mostly sunny. Hot with Highs around 102. Northwest Winds around 5 Mph, becoming east in the afternoon. Highest heat index Readings up to 112.

Tonight 22 Jul Williamson

Partly cloudy in the Evening, then becoming clear. Lows in the lower 80s. East Winds 5 to 10 Mph, becoming northeast after midnight. Highest heat index Readings up to 110 early in the evening.

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Jonah Temperature Statistics

July Temperature

Georgetown, Georgetown Municipal Airport (8.7 miles)

  • Lowest 15 July, 2026

    71.1 °F

  • Average July

    83.7 °F

  • Highest 8 July, 2026

    99 °F

Climate (2021–2026)

Georgetown, Georgetown Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    59.5 °F

  • Average 2021–2026

    69.9 °F

  • Average High 2021–2026

    80.8 °F
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