St Marys Weather Forecast

    • 6
    • 16

    Decreasing Clouds

    • 17
    • 28

    Slight Chance Snow

    • 13
    • 37

    Partly Sunny

    • 0
    • 30

    Mostly Cloudy

    • -9
    • 7

    Cold

    • 1
    • 7

    Cold

Today 19 Jan Warren

Mostly sunny. Highs around 16. West Winds 10 to 15 Mph.

Tonight 19 Jan Warren

Mostly cloudy in the Evening, then clearing. Lows around 5 above. West Winds around 5 Mph.

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St Marys Temperature Statistics

January Temperature

Des Moines International Airport (16.2 miles)

  • Lowest 17 January, 2026

    3.9 °F

  • Average January

    31.4 °F

  • Highest 7 January, 2026

    59 °F

Climate (2021–Present)

Des Moines International Airport (16.2 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    63.1 °F
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