Jamestown Weather Forecast

    • 26
    • 50

    Becoming Sunny

    • 34
    • 47

    Partly Sunny

    • 39
    • 54

    Mostly Cloudy

    • 45
    • 60

    Mostly Cloudy

    • 30
    • 62

    Mostly Cloudy

    • 26
    • 44

    Mostly Sunny

Today 22 Mar Grant

Mostly cloudy and much cooler. Near steady temperature in the mid 40s. North Winds 10 to 15 Mph.

Tonight 22 Mar Grant

Partly cloudy in the Evening, then becoming clear. Much Colder with Lows in the mid 20s. North Winds 10 to 15 Mph.

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  • Temperature Real-Time

Jamestown Temperature Statistics

March Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 16 March, 2026

    12.7 °F

  • Average March

    38.8 °F

  • Highest 20 March, 2026

    69.4 °F

Climate (2021–Present)

Platteville Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    49.8 °F

  • Average High 2021–2026

    58.7 °F
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