Heiberg Memorial Forest Weather Forecast

    • 29
    • 30

    Snow

    • 28
    • 36

    Rain/Snow

    • 24
    • 28

    Chance Rain/Snow

    • 33
    • 38

    Rain Showers

    • 24
    • 41

    Rain/Snow

    • 24
    • 34

    Rain/Snow Likely

Today 22 Dec Cortland

Partly sunny. Highs in the mid 30s. West Winds 5 to 10 Mph.

Tonight 22 Dec Cortland

Mostly cloudy with a 50 percent chance of snow Showers. Lows 15 to 20. Northwest Winds 10 to 15 Mph.

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Heiberg Memorial Forest Temperature Statistics

December Temperature

Cortland County-Chase Field (13 miles)

  • Lowest 5 December, 2025

    -5.8 °F

  • Average December

    24.6 °F

  • Highest 19 December, 2025

    51.8 °F

Climate (2020–Present)

Cortland County-Chase Field (13 miles)

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  • Average Low 2020–2025

    37.9 °F

  • Average 2020–2025

    47.3 °F

  • Average High 2020–2025

    56.6 °F
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