Union Weather Forecast

    • 37
    • 56

    Rain Likely

    • 24
    • 40

    Rain/Snow

    • 31
    • 38

    Mostly Cloudy

    • 29
    • 54

    Mostly Cloudy

    • 18
    • 37

    Mostly Cloudy

    • 21
    • 31

    Mostly Cloudy

Today 30 Jan McHenry

Mostly sunny early in the Morning, then becoming partly cloudy in the late morning and early Afternoon, then becoming mostly cloudy early in the afternoon. Record breaking warmth likely. Highs in the mid 50s. Southwest Winds 10 to 20 Mph with Gusts up to 25 Mph.

Tonight 30 Jan McHenry

Cloudy. A chance of Showers in the Evening, then Showers likely after midnight. Unseasonably mild. Lows in the mid 30s. South Winds around 5 Mph in the Evening, becoming northeast after midnight. Chance of precipitation 70 percent.

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Union Temperature Statistics

January Temperature

De Kalb Taylor Municipal Airport (21.7 miles)

  • Lowest 21 January, 2025

    -11.7 °F

  • Average January

    18.6 °F

  • Highest 28 January, 2025

    47.7 °F

Climate (2020–Present)

De Kalb Taylor Municipal Airport (21.7 miles)

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  • Average Low 2020–2025

    40.3 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    58.4 °F
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