Reston Weather Forecast

    • 14
    • 27

    Mostly Sunny

    • 32
    • 39

    Partly Sunny

    • 26
    • 49

    Partly Sunny

    • 11
    • 37

    Mostly Cloudy

    • 13
    • 19

    Snow Likely

    • 10
    • 21

    Chance Snow

Today 20 Jan Eastern Loudoun

Sunny. Highs in the upper 20s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 20 Jan Eastern Loudoun

Mostly clear. Cold with Lows around 12. Northwest Winds around 5 Mph, becoming south around 5 Mph after midnight.

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Reston Temperature Statistics

January Temperature

Washington/Dulles International Airport, DC (5 miles)

  • Lowest 16 January, 2026

    21 °F

  • Average January

    37.8 °F

  • Highest 7 January, 2026

    61 °F

Climate (2021–Present)

Washington/Dulles International Airport, DC (5 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.4 °F
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