National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Hazardous Weather Conditions

Current conditions at

Portola - Gulling Street (CQ236)

Lat: 39.81336°NLon: 120.47069°WElev: 4895.0ft.

NA

41°F

5°C

Humidity 86%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 03 Jan 02:00 AM PST
Extended Forecast for

Portola CA

Flood Watch January 3, 10:00am until January 5, 04:00pm
Winter Weather Advisory January 3, 04:00pm until January 5, 10:00am
Click here for hazard details and duration
Flood Watch
Winter Weather Advisory

  • Overnight

    Overnight: Rain. Snow level 7400 feet. Low around 34. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 34 °F

    Rain

  • Saturday

    Saturday: Rain before 10am, then rain and snow. Snow level 6500 feet lowering to 5800 feet in the afternoon . High near 43. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow

  • Saturday Night

    Saturday Night: Rain and snow. Snow level 5700 feet. Low around 32. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Rain/Snow

  • Sunday

    Sunday: Rain and snow. Snow level 5300 feet. High near 40. Southwest wind 5 to 10 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    High: 40 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow before 10pm, then a chance of snow. Low around 29. Southwest wind around 5 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 29 °F

    Rain/Snow
    then Chance
    Snow

  • Monday

    Monday: Snow likely before 1pm, then rain and snow likely. Mostly cloudy, with a high near 40. South wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Monday Night

    Monday Night: A chance of rain and snow before 7pm, then a chance of snow between 7pm and 4am. Mostly cloudy, with a low around 26. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 26 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A slight chance of snow after 10am, mixing with rain after 1pm. Partly sunny, with a high near 41.

    High: 41 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow before 1am, then a slight chance of snow. Snow level 5100 feet. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Slight Chance
    Rain/Snow

Detailed Forecast

Overnight
Rain. Snow level 7400 feet. Low around 34. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Saturday
Rain before 10am, then rain and snow. Snow level 6500 feet lowering to 5800 feet in the afternoon . High near 43. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Saturday Night
Rain and snow. Snow level 5700 feet. Low around 32. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Sunday
Rain and snow. Snow level 5300 feet. High near 40. Southwest wind 5 to 10 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
Rain and snow before 10pm, then a chance of snow. Low around 29. Southwest wind around 5 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday
Snow likely before 1pm, then rain and snow likely. Mostly cloudy, with a high near 40. South wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday Night
A chance of rain and snow before 7pm, then a chance of snow between 7pm and 4am. Mostly cloudy, with a low around 26. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tuesday
A slight chance of snow after 10am, mixing with rain after 1pm. Partly sunny, with a high near 41.
Tuesday Night
A slight chance of rain and snow before 1am, then a slight chance of snow. Snow level 5100 feet. Mostly cloudy, with a low around 26.
Wednesday
A chance of snow. Partly sunny, with a high near 39.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 16.
Thursday
A slight chance of snow. Mostly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 13.
Friday
Mostly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portola CA
 39.81°N 120.46°W (Elev. 4984 ft)
Last Update:
2:00 am PST Jan 3, 2026
Forecast Valid:
3am PST Jan 3, 2026-6pm PST Jan 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation