River Lake Weather Forecast

    • 57
    • 65

    Chance Rain Showers

    • 57
    • 70

    Mostly Cloudy

    • 56
    • 64

    Rain Showers Likely

    • 57
    • 67

    Mostly Cloudy

    • 57
    • 70

    Rain Showers Likely

    • 54
    • 65

    Rain Showers Likely

Today 24 Sep Dakota

Mostly cloudy. Slight chance of rain Showers early in the afternoon. Chance of rain Showers late in the afternoon. Near steady temperature in the lower 60s. South Winds 5 to 10 Mph. Chance of Showers 50 percent.

Tonight 24 Sep Dakota

Cloudy. A 50 percent chance of rain Showers in the evening. Patchy fog through the night. Lows in the mid 50s. Southeast Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

River Lake Temperature Statistics

September Temperature

South St. Paul Municipal-Richard E. Flemi (3.7 miles)

  • Lowest 14 September, 2026

    49.1 °F

  • Average September

    67.9 °F

  • Highest 1 September, 2026

    89.4 °F

Climate (2021–2026)

South St. Paul Municipal-Richard E. Flemi (3.7 miles)

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    57.2 °F
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