Square Lake Weather Forecast

    • 61
    • 67

    Fog

    • 56
    • 76

    Mostly Cloudy

    • 44
    • 65

    Mostly Cloudy

    • 44
    • 63

    Partly Sunny

    • 45
    • 63

    Chance Rain Showers

    • 39
    • 62

    Mostly Sunny

    • 45
    • 60

    Partly Sunny

Today 29 Sep Washington

Mostly sunny. Highs in the mid 60s.

Tonight 29 Sep Washington

Cloudy. Showers likely and slight chance of Thunderstorms early in the Evening, then slight chance of Showers late in the evening. Patchy fog after midnight. Near steady temperature in the lower 60s. Southwest Winds up to 10 Mph. Chance of precipitation 70 percent.

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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

    63.7 °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

    36.7 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    55.2 °F
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