Harlem Weather Forecast

    • 45
    • 61

    Mostly Cloudy

    • 51
    • 66

    Chance Rain Showers

    • 53
    • 72

    Slight Chance Thunderstorms

    • 54
    • 78

    Slight Chance Thunderstorms

    • 56
    • 82

    Partly Sunny

    • 59
    • 84

    Chance Rain Showers

Today 21 May Winnebago

Mostly cloudy. A slight chance of Sprinkles in the morning. Highs in the lower 60s. East Winds 10 to 15 Mph.

Tonight 21 May Winnebago

Mostly cloudy. Lows in the mid 40s. East Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harlem Temperature Statistics

May Temperature

Rockford, Greater Rockford Airport (10.6 miles)

  • Lowest 2 May, 2026

    27.6 °F

  • Average May

    56.6 °F

  • Highest 16 May, 2026

    84.7 °F

Climate (2021–Present)

Rockford, Greater Rockford Airport (10.6 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    61.8 °F
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