South Run Park Weather Forecast

    • 55
    • 75

    Rain Showers Likely

    • 57
    • 80

    Mostly Sunny

    • 53
    • 80

    Chance Thunderstorms

    • 49
    • 65

    Rain Showers

    • 46
    • 61

    Chance Rain Showers

    • 50
    • 68

    Rain Showers Likely

Today 22 Apr Fairfax

Mostly cloudy in the Morning, then becoming partly sunny. A slight chance of Thunderstorms. A chance of Showers, mainly in the morning. Highs in the mid 70s. Southwest Winds 5 to 10 Mph, becoming west in the afternoon. Chance of rain 50 percent.

Tonight 22 Apr Fairfax

Mostly cloudy. Not as cool with Lows around 50. South Winds around 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Run Park Temperature Statistics

April Temperature

Fort Belvoir (5 miles)

  • Lowest 9 April, 2026

    34.9 °F

  • Average April

    63 °F

  • Highest 16 April, 2026

    92.8 °F

Climate (2021–Present)

Fort Belvoir (5 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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