Blackwater Lake Weather Forecast

    • 66
    • 93

    Rain Showers Likely

    • 58
    • 84

    Chance Thunderstorms

    • 55
    • 77

    Chance Rain Showers

    • 55
    • 74

    Chance Thunderstorms

    • 57
    • 81

    Chance Thunderstorms

    • 61
    • 85

    Slight Chance Thunderstorms

    • 61
    • 89

    Mostly Sunny

Today 3 Jul McLean

Sunny with a slight chance of Showers and Thunderstorms. Highs in the lower 90s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 3 Jul McLean

Mostly cloudy with a chance of Showers and Thunderstorms. Some Thunderstorms may be severe with damaging Winds and large hail. Lows in the upper 60s. East Winds 5 to 10 Mph, becoming west after midnight. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Blackwater Lake Temperature Statistics

July Temperature

Garrison (17.4 miles)

  • Lowest 1 July, 2025

    48 °F

  • Average July

    70.3 °F

  • Highest 1 July, 2025

    84.9 °F

Climate (2020–Present)

Garrison (17.4 miles)

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  • Average Low 2020–2025

    31.2 °F

  • Average 2020–2025

    42.6 °F

  • Average High 2020–2025

    54 °F
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