Rend Lake State Wildlife Refuge Weather Forecast

    • 28
    • 34

    Chance Snow Showers

    • 25
    • 43

    Mostly Cloudy

    • 15
    • 27

    Partly Sunny

    • 17
    • 27

    Partly Sunny

    • 11
    • 21

    Mostly Sunny

    • 24
    • 29

    Mostly Sunny

    • 25
    • 41

    Partly Sunny

Today 15 Jan Jefferson

Sunny. Highs in the lower 30s. West Winds around 5 Mph.

Tonight 15 Jan Jefferson

Mostly cloudy with a 50 percent chance of snow Showers. Little or no snow accumulation. Lows in the mid 20s. Temperature rising into the lower 30s after midnight. South Winds 10 to 15 Mph.

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Rend Lake State Wildlife Refuge Temperature Statistics

January Temperature

Mount Vernon Airport (13.7 miles)

  • Lowest 4 January, 2026

    18 °F

  • Average January

    40.4 °F

  • Highest 8 January, 2026

    66.9 °F

Climate (2021–Present)

Mount Vernon Airport (13.7 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    68.5 °F
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