Jarchow Reservoir Weather Forecast

    • 25
    • 47

    Becoming Sunny

    • 34
    • 46

    Partly Sunny

    • 35
    • 58

    Mostly Sunny

    • 37
    • 55

    Mostly Cloudy

    • 42
    • 58

    Partly Sunny

    • 38
    • 66

    Mostly Sunny

Today 20 Dec Jefferson

Partly sunny. Near steady temperature in the mid 40s. North Winds 10 to 15 Mph.

Tonight 20 Dec Jefferson

Partly cloudy in the Evening, then becoming mostly clear. Cooler with Lows in the mid 20s. East Winds around 5 Mph, becoming south around 5 Mph after midnight.

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Jarchow Reservoir Temperature Statistics

December Temperature

Hebron, Hebron Municipal Airport (23 miles)

  • Lowest 14 December, 2025

    4.3 °F

  • Average December

    31 °F

  • Highest 9 December, 2025

    61.5 °F

Climate (2020–Present)

Hebron, Hebron Municipal Airport (23 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    66.3 °F
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