Fort Stevenson State Park Weather Forecast

    • 65
    • 92

    Partly Sunny

    • 66
    • 95

    Slight Chance Rain Showers

    • 66
    • 97

    Chance Thunderstorms

    • 63
    • 88

    Chance Thunderstorms

    • 63
    • 87

    Chance Thunderstorms

    • 66
    • 90

    Sunny

Today 27 Jul Western McLean

Increasing Clouds. Patchy smoke. Highs in the lower 90s. Northeast Winds around 10 Mph.

Tonight 27 Jul Western McLean

Decreasing Clouds. Patchy smoke. Lows in the mid 60s. East Winds 5 to 10 Mph.

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Fort Stevenson State Park Temperature Statistics

July Temperature

Garrison (3.7 miles)

  • Lowest 22 July, 2026

    47.6 °F

  • Average July

    73.3 °F

  • Highest 25 July, 2026

    100.9 °F

Climate (2021–2026)

Garrison (3.7 miles)

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  • Average Low 2021–2026

    31.3 °F

  • Average 2021–2026

    42.6 °F

  • Average High 2021–2026

    54 °F
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