Another Round of Heavy Rain and Mountain Snow in California; Snow in the Great Lakes and Northeast

Another round of heavy rainfall will renew concerns for additional flash flooding and landslides in southern California around burn scars and coastal mountain ranges. A low pressure system is bringing enhanced snowfall downwind from the lower Great Lakes into the Northeast mountain ranges. Above average temperatures will challenge or break daily record high temperatures across the southern Plains. Read More >

Current conditions at

LYONS VALLEY (COWC1)

Lat: 39.12583°NLon: 123.07333°WElev: 3355.0ft.

NA

40°F

4°C

Humidity 97%
Wind Speed E 5 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 17 Nov 02:01 AM PST
Extended Forecast for

10 Miles NNW Lakeport CA

Flood Advisory November 17, 02:56am until November 17, 03:45am
Click here for hazard details and duration
Flood Advisory
  •  
    Flood Advisory November 17, 02:56am until November 17, 03:45am

    NOW until 3:45am Mon

    Flood Advisory

  • Overnight

    Low: 41 °F

    Rain

  • Monday

    Monday: Rain before 7am, then showers likely and possibly a thunderstorm between 7am and 4pm, then scattered showers and thunderstorms after 4pm.  High near 52. South wind 5 to 7 mph becoming west in the morning.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 52 °F

    Showers

  • Monday Night

    Monday Night: Scattered showers, mainly before 7pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 36. Calm wind becoming west northwest 5 to 7 mph in the evening.  Chance of precipitation is 30%.

    Low: 36 °F

    Scattered
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Patchy frost before 10am.  Otherwise, sunny, with a high near 59. West northwest wind 3 to 7 mph.

    High: 59 °F

    Patchy Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39. Northwest wind 5 to 7 mph becoming north northeast in the evening.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of rain after 4pm.  Partly sunny, with a high near 57. Light and variable wind.

    High: 57 °F

    Mostly Sunny
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly after 10pm.  Low around 42. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 4pm.  Mostly cloudy, with a high near 53.

    High: 53 °F

    Rain Likely

Detailed Forecast

Overnight
Rain. Low around 41. South wind around 11 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain before 7am, then showers likely and possibly a thunderstorm between 7am and 4pm, then scattered showers and thunderstorms after 4pm. High near 52. South wind 5 to 7 mph becoming west in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Scattered showers, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. Calm wind becoming west northwest 5 to 7 mph in the evening. Chance of precipitation is 30%.
Tuesday
Patchy frost before 10am. Otherwise, sunny, with a high near 59. West northwest wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 39. Northwest wind 5 to 7 mph becoming north northeast in the evening.
Wednesday
A 30 percent chance of rain after 4pm. Partly sunny, with a high near 57. Light and variable wind.
Wednesday Night
Rain, mainly after 10pm. Low around 42. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 53.
Thursday Night
A chance of rain, mainly before 10pm. Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 63.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Lakeport CA
 39.17°N 122.98°W (Elev. 1998 ft)
2:50 am PST Nov 17, 2025
2am PST Nov 17, 2025-6pm PST Nov 23, 2025
 
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Additional Resources

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