Middle Run Stream Valley Park Weather Forecast

    • 70
    • 95

    Mostly Sunny

    • 73
    • 96

    Partly Sunny

    • 60
    • 96

    Rain Showers

    • 54
    • 69

    Rain Showers Likely

    • 56
    • 65

    Rain Showers Likely

    • 61
    • 75

    Rain Showers Likely

Today 18 May Fairfax

Sunny, hot with Highs in the mid 90s. Southwest Winds 5 to 10 Mph.

Tonight 18 May Fairfax

Mostly clear. Lows around 70. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Middle Run Stream Valley Park Temperature Statistics

May Temperature

Fort Belvoir (3.7 miles)

  • Lowest 1 May, 2026

    37.4 °F

  • Average May

    60.3 °F

  • Highest 16 May, 2026

    85.6 °F

Climate (2021–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.3 °F
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