Marine On St Croix Weather Forecast

    • 58
    • 79

    Slight Chance Rain Showers

    • 49
    • 78

    Sunny

    • 51
    • 77

    Mostly Sunny

    • 60
    • 79

    Slight Chance Thunderstorms

    • 61
    • 84

    Slight Chance Thunderstorms

    • 57
    • 82

    Slight Chance Thunderstorms

    • 57
    • 82

    Partly Sunny

Today 21 Aug Washington

Mostly sunny. Highs in the lower 80s. Northwest Winds 5 to 15 Mph.

Tonight 21 Aug Washington

Partly cloudy. A 20 percent chance of rain Showers after midnight. Lows in the upper 50s. Northwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marine On St Croix Temperature Statistics

August Temperature

L O Simenstad Municipal Airport (8.1 miles)

  • Lowest 6 August, 2026

    54.1 °F

  • Average August

    73.4 °F

  • Highest 12 August, 2026

    88.2 °F

Climate (2021–2026)

L O Simenstad Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    37.2 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    56.9 °F
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