Great Mills Weather Forecast

    • 29
    • 37

    Decreasing Clouds

    • 34
    • 49

    Mostly Cloudy

    • 26
    • 43

    Partly Sunny

    • 30
    • 41

    Mostly Cloudy

    • 30
    • 47

    Slight Chance Rain/Snow

    • 20
    • 39

    Mostly Sunny

Today 9 Dec St. Marys

Mostly sunny. Highs in the upper 30s. East Winds around 5 Mph, becoming south this afternoon.

Tonight 9 Dec St. Marys

Partly cloudy. Lows around 30. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Mills Temperature Statistics

December Temperature

Patuxent River, Naval Air Station (5 miles)

  • Lowest 4 December, 2025

    27 °F

  • Average December

    36.3 °F

  • Highest 4 December, 2025

    46.9 °F

Climate (2020–Present)

Patuxent River, Naval Air Station (5 miles)

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  • Average Low 2020–2025

    52.8 °F

  • Average 2020–2025

    61.2 °F

  • Average High 2020–2025

    69.4 °F
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