Union Weather Forecast

    • 62
    • 79

    Rain Showers

    • 65
    • 85

    Mostly Sunny

    • 74
    • 90

    Mostly Sunny

    • 75
    • 95

    Sunny

    • 74
    • 95

    Sunny

    • 74
    • 94

    Slight Chance Thunderstorms

Today 18 Jun Clark

Mostly cloudy in the Morning, then becoming partly sunny. A chance of Thunderstorms. Showers, mainly in the morning. Not as warm. Humid with Highs in the upper 70s. Southwest Winds around 10 Mph. Chance of rain 80 percent.

Tonight 18 Jun Clark

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the lower 60s. Northwest Winds 5 to 10 Mph. Chance of rain 40 percent.

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Union Temperature Statistics

June Temperature

Keokuk Municipal Airport (18 miles)

  • Lowest 10 June, 2025

    50 °F

  • Average June

    68.4 °F

  • Highest 2 June, 2025

    86 °F

Climate (2020–Present)

Keokuk Municipal Airport (18 miles)

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  • Average Low 2020–2025

    43.5 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    62.6 °F
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