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

Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

LYONS VALLEY (COWC1)

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

NA

49°F

9°C

Humidity 100%
Wind Speed ESE 14 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 12 Nov 03:01 PM PST
Extended Forecast for

Hopland CA

Flood Watch November 13, 01:00am until November 13, 10:00am
Wind Advisory November 12, 07:00pm until November 13, 07:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory

  • This Afternoon

    This Afternoon: A 30 percent chance of rain, mainly after 4pm. Cloudy, with a high near 63. Southeast wind around 15 mph, with gusts as high as 23 mph.

    High: 63 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly after 7pm. The rain could be heavy at times. Low around 52. Windy, with a south southeast wind 18 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

    Low: 52 °F

    Heavy Rain
    and Windy

  • Thursday

    Thursday: Rain. The rain could be heavy at times. High near 62. Breezy, with a south southeast wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 62 °F

    Breezy. Heavy
    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 45. Southeast wind 7 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Rain Likely

  • Friday

    Friday: A 40 percent chance of rain. Partly sunny, with a high near 63. East wind 8 to 11 mph.

    High: 63 °F

    Chance Rain

  • Friday Night

    Friday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 68.

    High: 68 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 10pm. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain, mainly after 10am. Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 30 percent chance of rain, mainly after 4pm. Cloudy, with a high near 63. Southeast wind around 15 mph, with gusts as high as 23 mph.
Tonight
Rain, mainly after 7pm. The rain could be heavy at times. Low around 52. Windy, with a south southeast wind 18 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Thursday
Rain. The rain could be heavy at times. High near 62. Breezy, with a south southeast wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Thursday Night
Rain likely. Mostly cloudy, with a low around 45. Southeast wind 7 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 63. East wind 8 to 11 mph.
Friday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 41. Calm wind.
Saturday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 68.
Saturday Night
A slight chance of rain after 10pm. Mostly cloudy, with a low around 45.
Sunday
A chance of rain, mainly after 10am. Mostly cloudy, with a high near 62.
Sunday Night
Rain likely, mainly between 10pm and 4am. Mostly cloudy, with a low around 42.
Monday
A chance of rain. Partly sunny, with a high near 59.
Monday Night
A slight chance of rain. Patchy frost. Otherwise, partly cloudy, with a low around 37.
Tuesday
Patchy frost. Otherwise, mostly sunny, with a high near 60.
Tuesday Night
A slight chance of rain. Patchy fog. Otherwise, partly cloudy, with a low around 38.
Wednesday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hopland CA
 38.97°N 123.1°W (Elev. 577 ft)
Last Update:
1:10 pm PST Nov 12, 2025
Forecast Valid:
3pm PST Nov 12, 2025-6pm PST Nov 19, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation