Cornish Weather Forecast

    • -1
    • 34

    Chance Snow Showers

    • 8
    • 21

    Partly Sunny

    • 18
    • 32

    Mostly Cloudy

    • 4
    • 32

    Partly Sunny

    • 1
    • 19

    Mostly Sunny

    • 16
    • 26

    Chance Snow

Today 4 Dec Sullivan

Mostly cloudy this Morning, then becoming partly sunny. A 50 percent chance of snow Showers. Highs in the lower 30s. Temperatures falling into the lower 20s this afternoon. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest 15 to 20 Mph with Gusts up to 35 Mph this afternoon.

Tonight 4 Dec Sullivan

Partly cloudy with a slight chance of snow Showers in the Evening, then mostly clear after midnight. Cooler with Lows around 1 below. Northwest Winds 10 to 15 Mph. Gusts up to 40 Mph, decreasing to 30 Mph after midnight. Chance of snow 20 percent. Wind chill Values as low as 12 below.

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Cornish Temperature Statistics

December Temperature

Springfield, Hartness State Springfield Airport (11.2 miles)

  • Lowest 1 December, 2025

    19 °F

  • Average December

    28.2 °F

  • Highest 1 December, 2025

    37 °F

Climate (2020–Present)

Springfield, Hartness State Springfield Airport (11.2 miles)

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  • Average Low 2020–2025

    38.5 °F

  • Average 2020–2025

    48.5 °F

  • Average High 2020–2025

    58.9 °F
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