Garrison Dam Weather Forecast

    • 65
    • 92

    Slight Chance Thunderstorms

    • 66
    • 95

    Patchy Smoke

    • 67
    • 98

    Chance Rain Showers

    • 63
    • 89

    Chance Thunderstorms

    • 63
    • 88

    Slight Chance Thunderstorms

    • 66
    • 91

    Mostly Sunny

Today 27 Jul Eastern McLean

Mostly sunny. Patchy smoke early in the Morning, then Areas of smoke in the afternoon. Highs in the lower 90s. North Winds around 10 Mph.

Tonight 27 Jul Eastern McLean

A slight chance of Thunderstorms in the evening. Mostly cloudy with a slight chance of Showers. Patchy smoke. Lows in the mid 60s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Garrison Dam Temperature Statistics

July Temperature

Garrison (10.6 miles)

  • Lowest 22 July, 2026

    47.6 °F

  • Average July

    73.3 °F

  • Highest 25 July, 2026

    100.9 °F

Climate (2021–2026)

Garrison (10.6 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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