Upper Forni Weather Forecast

    • 34
    • 39

    Rain/Snow

    • 36
    • 41

    Rain Showers

    • 33
    • 41

    Rain Showers

    • 34
    • 38

    Snow Showers

    • 28
    • 38

    Snow Showers

    • 28
    • 33

    Snow Showers

Today 19 Dec West Slope Northern Sierra Nevada

At lower Elevations, a slight chance of rain Showers early in the morning. A chance of rain Showers late in the Morning, then heavy rain Showers in the afternoon. At higher Elevations, a slight chance of rain Showers in the morning. A slight chance of snow Showers late in the Morning, then heavy rain Showers in the afternoon. Snow Showers late in the afternoon. Highs 37 to 52 higher Elevations. 45 to 60 lower Elevations. No snow accumulation lower Elevations. Up to 1 inch higher Elevations. Snow level above 8000 feet. Prevailing south Winds up to 15 Mph with Gusts to around 40 Mph. Except south up to 30 Mph with Gusts to around 45 Mph over Ridges.

Tonight 19 Dec West Slope Northern Sierra Nevada

At lower Elevations, rain Showers. At higher Elevations, rain Showers and heavy snow Showers in the Evening, then rain Showers after midnight. Lows 29 to 43 higher Elevations. 40 to 50 lower Elevations. Snow accumulation up to 1 inch. Prevailing south Winds up to 10 Mph with Gusts to around 35 Mph. Except southwest up to 25 Mph over Ridges.

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Upper Forni Temperature Statistics

December Temperature

South Lake Tahoe, Lake Tahoe Airport (10.6 miles)

  • Lowest 4 December, 2025

    18 °F
  • Average December

    34.3 °F
  • Highest 2 December, 2025

    55.9 °F

Climate (2020–Present)

South Lake Tahoe, Lake Tahoe Airport (10.6 miles)

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  • Average Low 2020–2025

    31.1 °F
  • Average 2020–2025

    45.7 °F
  • Average High 2020–2025

    59.5 °F
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