Mercer Field Weather Forecast

    • 52
    • 72

    Mostly Sunny

    • 59
    • 79

    Chance Rain Showers

    • 60
    • 78

    Slight Chance Thunderstorms

    • 62
    • 84

    Partly Sunny

    • 65
    • 86

    Partly Sunny

    • 67
    • 89

    Partly Sunny

    • 64
    • 88

    Mostly Cloudy

Today 7 Sep Union

Sunny. Highs in the lower 70s. South Winds around 5 Mph.

Tonight 7 Sep Union

Mostly clear. Lows in the lower 50s. South Winds 5 to 10 Mph.

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Mercer Field Temperature Statistics

September Temperature

Creston Municipal Airport (5 miles)

  • Lowest 4 September, 2025

    42.8 °F

  • Average September

    61.5 °F

  • Highest 2 September, 2025

    78.8 °F

Climate (2020–Present)

Creston Municipal Airport (5 miles)

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  • Average Low 2020–2025

    41 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    61.3 °F
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