Sullivan Lake State Airport Weather Forecast

    • 28
    • 37

    Snow Likely

    • 28
    • 34

    Snow Likely

    • 31
    • 36

    Rain/Snow

    • 32
    • 39

    Rain Likely

    • 35
    • 39

    Rain/Snow

    • 38
    • 41

    Rain

Today 3 Dec Northeast Mountains

Cloudy with a 20 percent chance of snow. Patchy freezing fog. Highs in the mid to upper 30s.

Tonight 3 Dec Northeast Mountains

Cloudy. A chance of snow. Patchy freezing fog. Lows in the mid 20s to lower 30s. Chance of precipitation 50 percent.

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Sullivan Lake State Airport Temperature Statistics

December Temperature

Boundary County Airport (45.4 miles)

  • Lowest 1 December, 2025

    26.6 °F

  • Average December

    28.5 °F

  • Highest 1 December, 2025

    32 °F

Climate (2020–Present)

Boundary County Airport (45.4 miles)

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  • Average Low 2020–2025

    37.6 °F

  • Average 2020–2025

    47.1 °F

  • Average High 2020–2025

    56.6 °F
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