Harlem Weather Forecast

    • 75
    • 94

    Slight Chance Thunderstorms

    • 70
    • 91

    Thunderstorms Likely

    • 66
    • 84

    Chance Thunderstorms

    • 69
    • 85

    Chance Thunderstorms

    • 69
    • 90

    Mostly Sunny

    • 70
    • 90

    Slight Chance Thunderstorms

Today 23 Jul Winnebago

Mostly cloudy through mid Morning, then clearing. A slight chance of Showers and Thunderstorms through mid morning. Hot and humid with Highs in the lower 90s. South Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon. Chance of precipitation 20 percent. Heat index Values up to 105.

Tonight 23 Jul Winnebago

Clear. Warm and humid with Lows in the mid 70s. South Winds 5 to 10 Mph.

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Harlem Temperature Statistics

July Temperature

Rockford, Greater Rockford Airport (10.6 miles)

  • Lowest 18 July, 2025

    53.7 °F

  • Average July

    75.6 °F

  • Highest 5 July, 2025

    93.7 °F

Climate (2020–Present)

Rockford, Greater Rockford Airport (10.6 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    61.6 °F
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