Alder Lake Weather Forecast

    • 11
    • 28

    Sunny

    • 30
    • 40

    Increasing Clouds

    • 25
    • 49

    Partly Sunny

    • 10
    • 37

    Mostly Cloudy

    • 13
    • 18

    Snow

    • 9
    • 20

    Chance Snow

    • 7
    • 24

    Partly Sunny

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

Clear, cold with Lows around 11. North Winds around 5 Mph, becoming south.

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Alder Lake Temperature Statistics

January Temperature

Leesburg / Godfrey (5.6 miles)

  • Lowest 15 January, 2026

    21.2 °F

  • Average January

    37 °F

  • Highest 7 January, 2026

    60.8 °F

Climate (2021–Present)

Leesburg / Godfrey (5.6 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    57 °F

  • Average High 2021–2026

    66.7 °F
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