Lake Alta Weather Forecast

    • 47
    • 52

    Rain

    • 48
    • 50

    Rain

    • 42
    • 53

    Rain

    • 41
    • 48

    Rain

    • 40
    • 44

    Rain

    • 40
    • 44

    Rain Likely

Today 21 Dec West Slope Northern Sierra Nevada

Heavy rain Showers. Highs 37 to 52 higher Elevations. 47 to 57 lower Elevations. Prevailing south Winds 10 to 20 Mph with Gusts to around 55 Mph. Except south 10 to 35 Mph with Gusts to around 60 Mph over Ridges.

Tonight 21 Dec West Slope Northern Sierra Nevada

Heavy rain Showers and a slight chance of Thunderstorms at lower Elevations. And heavy rain Showers, heavy snow Showers and a slight chance of Thunderstorms at higher Elevations. Breezy, Colder. Some Thunderstorms may produce heavy rainfall. Lows 29 to 44 higher Elevations. 42 to 50 lower Elevations. No snow accumulation lower Elevations. 4 to 9 Inches higher Elevations. Snow level above 8000 feet. Prevailing south Winds 10 to 25 Mph decreasing to 5 to 15 Mph after midnight. Gusts up to 50 Mph. Over Ridges. Prevailing southwest Winds 20 to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Alta Temperature Statistics

December Temperature

Emigrant Gap, Blue Canyon Nyack Airport (7.5 miles)

  • Lowest 3 December, 2025

    34 °F

  • Average December

    50.9 °F

  • Highest 10 December, 2025

    68 °F

Climate (2020–Present)

Emigrant Gap, Blue Canyon Nyack Airport (7.5 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    53.3 °F

  • Average High 2020–2025

    60.3 °F
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