Square Lake Weather Forecast

    • 56
    • 75

    Chance Rain Showers

    • 54
    • 75

    Rain Showers Likely

    • 54
    • 64

    Rain Showers

    • 51
    • 69

    Chance Rain Showers

    • 49
    • 67

    Chance Rain Showers

    • 49
    • 65

    Chance Rain Showers

    • 50
    • 67

    Mostly Cloudy

Today 16 Sep Washington

Increasing Clouds. Near steady temperature in the mid 70s. Southeast Winds 5 to 10 Mph.

Tonight 16 Sep Washington

Cloudy with a 50 percent chance of rain Showers. Lows in the upper 50s. Southeast Winds up to 5 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Square Lake Temperature Statistics

September Temperature

Lake Elmo Airport (10.6 miles)

  • Lowest 14 September, 2026

    41 °F

  • Average September

    68.9 °F

  • Highest 1 September, 2026

    87.8 °F

Climate (2021–2026)

Lake Elmo Airport (10.6 miles)

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  • Average Low 2021–2026

    36.6 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    55.3 °F
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