Irwin Weather Forecast

    • 67
    • 84

    Chance Rain Showers

    • 70
    • 87

    Rain Showers

    • 62
    • 83

    Chance Thunderstorms

    • 59
    • 80

    Mostly Sunny

    • 61
    • 82

    Mostly Sunny

    • 64
    • 83

    Slight Chance Thunderstorms

Today 26 Jul Union

Partly cloudy. Highs in the mid 80s. Light and variable Winds, becoming west 5 to 10 Mph this late morning and afternoon.

Tonight 26 Jul Union

Partly cloudy. Lows in the upper 60s. West Winds around 5 Mph.

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Irwin Temperature Statistics

July Temperature

Marysville Union County Airport (9.9 miles)

  • Lowest 23 July, 2026

    50 °F

  • Average July

    75.9 °F

  • Highest 3 July, 2026

    95 °F

Climate (2021–2026)

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

    62.6 °F
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