Union Grove Weather Forecast

    • 63
    • 84

    Slight Chance Thunderstorms

    • 58
    • 82

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

    • 66
    • 83

    Chance Thunderstorms

    • 69
    • 87

    Chance Rain Showers

    • 67
    • 86

    Slight Chance Thunderstorms

Today 26 Aug Whiteside

Mostly Cloudy, then becoming mostly sunny this Morning, then becoming sunny. A slight chance of Showers and Thunderstorms after Midnight, then a slight chance of Showers this morning. Humid with Highs in the mid 80s. South Winds 5 to 10 Mph, becoming northwest 10 to 15 Mph this afternoon. Chance of rain 20 percent.

Tonight 26 Aug Whiteside

Mostly clear. Lows in the lower 60s. Northwest Winds 5 to 10 Mph.

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Union Grove Temperature Statistics

August Temperature

Tri-Township Airport (14.9 miles)

  • Lowest 23 August, 2026

    54.9 °F

  • Average August

    72.4 °F

  • Highest 10 August, 2026

    86.5 °F

Climate (2021–2026)

Tri-Township Airport (14.9 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    62.7 °F
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