Washington Lake Weather Forecast

    • 47
    • 70

    Becoming Sunny

    • 61
    • 78

    Mostly Sunny

    • 48
    • 80

    Rain Showers Likely

    • 41
    • 64

    Mostly Cloudy

    • 43
    • 61

    Rain Showers Likely

    • 43
    • 61

    Rain Showers Likely

Today 9 Sep Mahnomen

Mostly sunny. A slight chance of Showers in the morning. Highs 70 to 75. Northwest Winds 10 to 20 Mph. Chance of rain 20 percent.

Tonight 9 Sep Mahnomen

Mostly clear. Lows in the mid 40s. Southwest Winds up to 10 Mph.

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  • Temperature Real-Time

Washington Lake Temperature Statistics

September Temperature

Fosston, Fosston Municipal Airport (14.9 miles)

  • Lowest 1 September, 2026

    51.8 °F

  • Average September

    63.7 °F

  • Highest 2 September, 2026

    80.6 °F

Climate (2021–2026)

Fosston, Fosston Municipal Airport (14.9 miles)

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  • Average Low 2021–2026

    29.5 °F

  • Average 2021–2026

    39.3 °F

  • Average High 2021–2026

    48.7 °F
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