Patuxent River - Thomas Johnson Bridge Weather Forecast

    • 64
    • 76

    Mostly Cloudy

    • 67
    • 83

    Partly Sunny

    • 61
    • 86

    Chance Rain Showers

    • 60
    • 64

    Rain Showers Likely

    • 60
    • 65

    Rain Showers Likely

    • 53
    • 67

    Mostly Sunny

    • 52
    • 60

    Mostly Sunny

Today 30 Sep St. Marys

Sunny. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 30 Sep St. Marys

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower 60s. South Winds around 5 Mph.

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Patuxent River - Thomas Johnson Bridge Temperature Statistics

September Temperature

St Marys County Airport (3.7 miles)

  • Lowest 15 September, 2026

    53.2 °F

  • Average September

    71.8 °F

  • Highest 1 September, 2026

    93.9 °F

Climate (2021–2026)

St Marys County Airport (3.7 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    67 °F
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