Potomac River - Colton Point Weather Forecast

    • 56
    • 69

    Becoming Sunny

    • 66
    • 80

    Mostly Sunny

    • 66
    • 84

    Mostly Sunny

    • 68
    • 86

    Mostly Sunny

    • 70
    • 88

    Mostly Sunny

    • 65
    • 87

    Chance Thunderstorms

    • 59
    • 73

    Rain Showers Likely

Today 15 May St. Marys

Sunny. Highs in the lower 70s. Northwest Winds 5 to 10 Mph.

Tonight 15 May St. Marys

Partly cloudy in the Evening, then clearing. Lows in the mid 50s. Southwest Winds around 5 Mph.

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  • Temperature Real-Time

Potomac River - Colton Point Temperature Statistics

May Temperature

St Marys County Airport (12.4 miles)

  • Lowest 1 May, 2026

    39.9 °F

  • Average May

    59.8 °F

  • Highest 5 May, 2026

    83.7 °F

Climate (2021–Present)

St Marys County Airport (12.4 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    66.7 °F
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