Johnsburg Weather Forecast

    • 19
    • 38

    Decreasing Clouds

    • 33
    • 37

    Mostly Cloudy

    • -4
    • 35

    Chance Snow

    • 16
    • 26

    Mostly Cloudy

    • 6
    • 30

    Partly Sunny

    • 12
    • 21

    Mostly Cloudy

Today 16 Dec Mower

Partly sunny this Morning, then becoming mostly cloudy. Not as cold with Highs in the upper 30s. Southwest Winds 10 to 20 Mph.

Tonight 16 Dec Mower

Partly cloudy. Lows around 19. Northwest Winds 10 to 15 Mph.

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Johnsburg Temperature Statistics

December Temperature

Austin Municipal (13.7 miles)

  • Lowest 13 December, 2025

    -3.6 °F

  • Average December

    14.8 °F

  • Highest 9 December, 2025

    39.2 °F

Climate (2020–Present)

Austin Municipal (13.7 miles)

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  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    57.4 °F
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