Blackwater Lake Weather Forecast

    • 37
    • 48

    Chance Rain Showers

    • 43
    • 54

    Rain Showers

    • 41
    • 55

    Rain Showers

    • 35
    • 56

    Chance Rain Showers

    • 31
    • 54

    Mostly Sunny

    • 36
    • 59

    Partly Sunny

Today 14 Oct McLean

Cloudy with scattered Showers. Highs in the upper 40s. East Winds around 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 14 Oct McLean

Cloudy. Lows in the upper 30s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Blackwater Lake Temperature Statistics

October Temperature

Garrison (17.4 miles)

  • Lowest 7 October, 2025

    28 °F

  • Average October

    55.6 °F

  • Highest 3 October, 2025

    86 °F

Climate (2020–Present)

Garrison (17.4 miles)

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  • Average Low 2020–2025

    31.3 °F

  • Average 2020–2025

    42.7 °F

  • Average High 2020–2025

    54.2 °F
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