Dunlap Lake Weather Forecast

    • 61
    • 73

    Mostly Cloudy

    • 57
    • 74

    Mostly Cloudy

    • 55
    • 75

    Partly Sunny

    • 56
    • 76

    Partly Sunny

    • 55
    • 77

    Partly Sunny

    • 57
    • 77

    Mostly Cloudy

Today 21 Sep Madison

Cloudy with a slight chance of Showers and very light drizzle. Much cooler. Near steady temperature in the lower 70s. North Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 21 Sep Madison

Mostly cloudy with a slight chance of very light drizzle. Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dunlap Lake Temperature Statistics

September Temperature

St. Louis Regional Airport (8.1 miles)

  • Lowest 8 September, 2026

    59 °F

  • Average September

    77.5 °F

  • Highest 5 September, 2026

    100.4 °F

Climate (2021–2026)

St. Louis Regional Airport (8.1 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    66.7 °F
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