Green Valley State Park Weather Forecast

    • 54
    • 70

    Chance Rain Showers

    • 51
    • 73

    Mostly Cloudy

    • 56
    • 79

    Mostly Sunny

    • 59
    • 84

    Partly Sunny

    • 61
    • 84

    Slight Chance Thunderstorms

    • 63
    • 83

    Chance Thunderstorms

Today 22 May Union

Mostly cloudy. Highs around 70. East Winds 10 to 15 Mph, becoming southeast with Gusts up to 25 Mph this afternoon.

Tonight 22 May Union

Mostly cloudy with a slight chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the mid 50s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming south after midnight. Chance of rain 70 percent.

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Green Valley State Park Temperature Statistics

May Temperature

Creston Municipal Airport (6.2 miles)

  • Lowest 2 May, 2026

    33.8 °F

  • Average May

    60.8 °F

  • Highest 15 May, 2026

    86 °F

Climate (2021–Present)

Creston Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    62.2 °F
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