Grundy Lake Number One Weather Forecast

    • 69
    • 88

    Slight Chance Thunderstorms

    • 61
    • 82

    Mostly Sunny

    • 62
    • 80

    Mostly Sunny

    • 66
    • 82

    Mostly Cloudy

    • 66
    • 79

    Rain Showers Likely

    • 66
    • 79

    Rain Showers Likely

Today 28 Jul Grundy

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 28 Jul Grundy

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 60s. North Winds around 5 Mph. Gusts up to 20 Mph in the evening. Chance of rain 20 percent.

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  • Temperature Real-Time

Grundy Lake Number One Temperature Statistics

July Temperature

Winchester Municipal Airport (20.5 miles)

  • Lowest 3 July, 2026

    69.8 °F

  • Average July

    78.3 °F

  • Highest 1 July, 2026

    95 °F

Climate (2021–2026)

Winchester Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    50.9 °F

  • Average 2021–2026

    61.3 °F

  • Average High 2021–2026

    71.6 °F
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