Sleeping Giant State Park Weather Forecast

    • 53
    • 63

    Rain

    • 48
    • 67

    Mostly Cloudy

    • 47
    • 62

    Slight Chance Rain Showers

    • 47
    • 64

    Mostly Cloudy

    • 48
    • 64

    Chance Rain Showers

    • 49
    • 64

    Chance Rain Showers

Today 20 Sep Northern New Haven

Showers. Highs in the mid 60s. Southeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon. Chance of rain near 100 percent.

Tonight 20 Sep Northern New Haven

Rain in the Evening, then Showers after midnight. Lows in the lower 50s. Southeast Winds 5 to 10 Mph, becoming north 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of rain near 100 percent.

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Sleeping Giant State Park Temperature Statistics

September Temperature

Meriden, Meriden Markham Municipal Airport (5.6 miles)

  • Lowest 7 September, 2026

    48 °F

  • Average September

    67.2 °F

  • Highest 10 September, 2026

    84.9 °F

Climate (2021–2026)

Meriden, Meriden Markham Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    42.9 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    62.9 °F
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