Winchester Lake Weather Forecast

    • 52
    • 75

    Rain Showers Likely

    • 50
    • 74

    Partly Sunny

    • 51
    • 74

    Partly Sunny

    • 52
    • 73

    Chance Rain Showers

    • 49
    • 70

    Chance Rain Showers

    • 48
    • 70

    Slight Chance Thunderstorms

Today 8 Aug North St. Louis

Patchy fog in the morning. Mostly sunny. Highs in the mid 70s. West Winds 5 to 10 Mph.

Tonight 8 Aug North St. Louis

Mostly cloudy with a 50 percent chance of Showers. Lows in the lower 50s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winchester Lake Temperature Statistics

August Temperature

Orr Regional Airport (13.7 miles)

  • Lowest 4 August, 2026

    53.6 °F

  • Average August

    66.1 °F

  • Highest 2 August, 2026

    79.3 °F

Climate (2021–2026)

Orr Regional Airport (13.7 miles)

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  • Average Low 2021–2026

    29.4 °F

  • Average 2021–2026

    40 °F

  • Average High 2021–2026

    49.8 °F
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