Irwin Weather Forecast

    • 34
    • 78

    Rain Showers

    • 26
    • 43

    Chance Rain Showers

    • 31
    • 46

    Mostly Sunny

    • 48
    • 56

    Mostly Cloudy

    • 57
    • 67

    Chance Rain Showers

    • 56
    • 76

    Chance Thunderstorms

    • 52
    • 73

    Chance Rain Showers

Today 26 Mar Union

Partly cloudy with a slight chance of Showers and Thunderstorms. Warmer with Highs in the upper 70s. Southwest Winds around 20 Mph with Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 26 Mar Union

Showers with a chance of Thunderstorms this Evening, then Showers with a slight chance of Thunderstorms after midnight. Locally heavy rainfall possible this evening. Much cooler with Lows in the mid 30s. Southwest Winds 15 to 20 Mph, becoming north after midnight. Chance of rain 100 percent.

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Irwin Temperature Statistics

March Temperature

Marysville Union County Airport (9.9 miles)

  • Lowest 18 March, 2026

    15.8 °F

  • Average March

    46.5 °F

  • Highest 6 March, 2026

    75.2 °F

Climate (2021–Present)

Marysville Union County Airport (9.9 miles)

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  • Average Low 2021–2026

    42.9 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    62.4 °F
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