Jamestown Weather Forecast

    • 66
    • 86

    Mostly Sunny

    • 70
    • 88

    Chance Thunderstorms

    • 68
    • 83

    Thunderstorms Likely

    • 68
    • 85

    Chance Thunderstorms

    • 71
    • 86

    Slight Chance Thunderstorms

    • 73
    • 89

    Slight Chance Thunderstorms

Today 4 Aug Clinton

Sunny. Near steady temperature in the mid 80s. Southeast Winds around 5 Mph.

Tonight 4 Aug Clinton

Mostly clear. Lows in the mid 60s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

August Temperature

Belleville, Scott AFB/MidAmerica Airport (21.7 miles)

  • Lowest 1 August, 2026

    69.3 °F

  • Average August

    73.3 °F

  • Highest 2 August, 2026

    82.6 °F

Climate (2021–2026)

Belleville, Scott AFB/MidAmerica Airport (21.7 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    68.1 °F
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