Jamestown Weather Forecast

    • 74
    • 91

    Isolated Thunderstorms

    • 76
    • 94

    Mostly Sunny

    • 74
    • 94

    Slight Chance Thunderstorms

    • 74
    • 89

    Chance Thunderstorms

    • 73
    • 91

    Chance Thunderstorms

    • 74
    • 93

    Partly Sunny

    • 74
    • 93

    Mostly Sunny

Today 22 Jul Clinton

Mostly sunny with isolated Showers and Thunderstorms. Near steady temperature in the lower 90s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 110.

Tonight 22 Jul Clinton

Partly cloudy. Isolated Showers and Thunderstorms in the evening. Humid with Lows in the mid 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 105 early in the evening.

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Jamestown Temperature Statistics

July Temperature

Belleville, Scott AFB/MidAmerica Airport (21.7 miles)

  • Lowest 2 July, 2025

    65.8 °F

  • Average July

    80.2 °F

  • Highest 11 July, 2025

    94.6 °F

Climate (2020–Present)

Belleville, Scott AFB/MidAmerica Airport (21.7 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.2 °F

  • Average High 2020–2025

    67.3 °F
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