Mount Washington Weather Forecast

    • 43
    • 56

    Mostly Cloudy

    • 38
    • 55

    Windy

    • 25
    • 41

    Windy

    • 29
    • 39

    Sunny

    • 37
    • 47

    Breezy

    • 45
    • 52

    Partly Sunny

Today 17 Sep Southern Coos

Partly sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 17 Sep Southern Coos

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 40s. Light and variable Winds.

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Mount Washington Temperature Statistics

September Temperature

Mount Washington (0 miles)

  • Lowest 8 September, 2025

    32 °F

  • Average September

    44.3 °F

  • Highest 2 September, 2025

    55.4 °F

Climate (2020–Present)

Mount Washington (0 miles)

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  • Average Low 2020–2025

    24.8 °F

  • Average 2020–2025

    30.1 °F

  • Average High 2020–2025

    35.3 °F
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