Irwin Weather Forecast

    • 52
    • 74

    Increasing Clouds

    • 52
    • 75

    Partly Sunny

    • 50
    • 73

    Mostly Sunny

    • 53
    • 76

    Sunny

    • 60
    • 80

    Partly Sunny

    • 64
    • 83

    Chance Rain Showers

Today 31 May Union

Mostly sunny. Highs in the mid 70s. East Winds around 5 Mph.

Tonight 31 May Union

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Irwin Temperature Statistics

May Temperature

Marysville Union County Airport (9.9 miles)

  • Lowest 2 May, 2026

    33.8 °F

  • Average May

    59.7 °F

  • Highest 18 May, 2026

    89.6 °F

Climate (2021–Present)

Marysville Union County Airport (9.9 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    62.5 °F
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