Riddle's Roost Airport Weather Forecast

    • 70
    • 89

    Decreasing Clouds

    • 74
    • 96

    Mostly Sunny

    • 76
    • 99

    Hot

    • 76
    • 98

    Hot

    • 77
    • 98

    Hot

    • 75
    • 96

    Slight Chance Thunderstorms

Today 29 Aug St. Charles

Mostly sunny. Near steady temperature in the upper 80s. South Winds 5 to 10 Mph.

Tonight 29 Aug St. Charles

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 60s. South Winds 5 to 10 Mph.

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Riddle's Roost Airport Temperature Statistics

August Temperature

Washington Regional Airport (16.8 miles)

  • Lowest 24 August, 2026

    57.2 °F

  • Average August

    77.5 °F

  • Highest 13 August, 2026

    96.8 °F

Climate (2021–2026)

Washington Regional Airport (16.8 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    69.6 °F
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