Cornish Flat Weather Forecast

    • -5
    • 18

    Mostly Sunny

    • 16
    • 22

    Chance Snow

    • 26
    • 32

    Rain/Snow

    • 12
    • 31

    Partly Sunny

    • 12
    • 26

    Slight Chance Snow

    • 12
    • 26

    Mostly Cloudy

    • 7
    • 21

    Partly Sunny

Today 8 Dec Sullivan

Mostly sunny. Highs around 18. Northwest Winds around 10 Mph with Gusts up to 20 Mph. Wind chill Values as low as zero.

Tonight 8 Dec Sullivan

Mostly clear. Lows around 4 below. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cornish Flat Temperature Statistics

December Temperature

Lebanon Municipal Airport (8.7 miles)

  • Lowest 5 December, 2025

    -2.9 °F

  • Average December

    23.1 °F

  • Highest 1 December, 2025

    37.9 °F

Climate (2020–Present)

Lebanon Municipal Airport (8.7 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    48.9 °F

  • Average High 2020–2025

    59.8 °F
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