Sleeping Giant State Park Weather Forecast

    • 61
    • 85

    Severe Tstms

    • 50
    • 70

    Rain Showers

    • 50
    • 74

    Mostly Sunny

    • 52
    • 75

    Mostly Cloudy

    • 54
    • 72

    Slight Chance Rain Showers

    • 53
    • 80

    Mostly Sunny

Today 6 Sep Northern New Haven

Showers and Thunderstorms likely. Some Thunderstorms may be severe with damaging Winds, large Hail, frequent Lightning, and heavy rainfall. Highs in the mid 80s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 6 Sep Northern New Haven

Showers with a chance of Thunderstorms in the Evening, then Showers with a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Some Thunderstorms may produce heavy rainfall after midnight. Lows around 60. North Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain 90 percent.

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Sleeping Giant State Park Temperature Statistics

September Temperature

Meriden, Meriden Markham Municipal Airport (5.6 miles)

  • Lowest 3 September, 2025

    50 °F

  • Average September

    64.8 °F

  • Highest 3 September, 2025

    79 °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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