McHenry Weather Forecast

    • 31
    • 55

    Partly Sunny

    • 35
    • 55

    Mostly Sunny

    • 46
    • 71

    Chance Rain Showers

    • 39
    • 68

    Windy

    • 48
    • 72

    Breezy

    • 49
    • 80

    Breezy

Today 9 May Foster

Sunny. Highs in the mid 50s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 9 May Foster

Mostly clear. Widespread frost after midnight. Lows in the lower 30s. North Winds 5 to 10 Mph with Gusts up to 30 Mph, becoming northeast after midnight.

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McHenry Temperature Statistics

May Temperature

Cooperstown (24.9 miles)

  • Lowest 7 May, 2026

    23 °F

  • Average May

    40.1 °F

  • Highest 7 May, 2026

    60.8 °F

Climate (2021–Present)

Cooperstown (24.9 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    40.6 °F

  • Average High 2021–2026

    50.9 °F
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