Jamestown Weather Forecast

    • 49
    • 73

    Becoming Sunny

    • 50
    • 79

    Partly Sunny

    • 56
    • 77

    Mostly Sunny

    • 39
    • 82

    Partly Sunny

    • 34
    • 54

    Partly Sunny

    • 39
    • 57

    Mostly Cloudy

Today 19 Mar Clinton

Mostly sunny. Highs in the lower 70s. South Winds around 5 Mph.

Tonight 19 Mar Clinton

Mostly clear. Lows around 50. South Winds around 5 Mph.

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Jamestown Temperature Statistics

March Temperature

Belleville, Scott AFB/MidAmerica Airport (21.7 miles)

  • Lowest 16 March, 2026

    23.9 °F

  • Average March

    51.4 °F

  • Highest 10 March, 2026

    84.9 °F

Climate (2021–Present)

Belleville, Scott AFB/MidAmerica Airport (21.7 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    67.8 °F
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