Sleeping Giant State Park Weather Forecast

    • 25
    • 40

    Chance Snow

    • 22
    • 40

    Mostly Cloudy

    • 12
    • 29

    Partly Sunny

    • 28
    • 35

    Mostly Cloudy

    • 33
    • 45

    Chance Rain

    • 23
    • 41

    Chance Snow

Today 6 Dec Northern New Haven

Mostly cloudy. A slight chance of snow this morning. Highs in the upper 30s. Northwest Winds around 5 Mph, becoming southwest around 5 Mph this afternoon. Chance of snow 20 percent.

Tonight 6 Dec Northern New Haven

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 20s. Northwest Winds around 5 Mph.

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Sleeping Giant State Park Temperature Statistics

December Temperature

Meriden, Meriden Markham Municipal Airport (5.6 miles)

  • Lowest 4 December, 2025

    19 °F

  • Average December

    32.4 °F

  • Highest 1 December, 2025

    41 °F

Climate (2020–Present)

Meriden, Meriden Markham Municipal Airport (5.6 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    63.1 °F
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