South Run Park Weather Forecast

    • 9
    • 22

    Mostly Cloudy

    • 11
    • 21

    Mostly Cloudy

    • 15
    • 25

    Mostly Sunny

    • 18
    • 33

    Mostly Sunny

    • 23
    • 36

    Mostly Cloudy

    • 24
    • 35

    Chance Snow

Today 30 Jan Fairfax

Mostly sunny. Highs in the lower 20s. Northwest Winds 5 to 10 Mph.

Tonight 30 Jan Fairfax

Mostly cloudy. Cold with Lows around 8 above. Northwest Winds around 5 Mph.

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  • Temperature Real-Time

South Run Park Temperature Statistics

January Temperature

Fort Belvoir (5 miles)

  • Lowest 27 January, 2026

    5.9 °F

  • Average January

    34.6 °F

  • Highest 7 January, 2026

    64 °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

    68.2 °F
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