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Upper Lake, California Weather Forecast
Upper Lake, California Weather
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Weather Forecast for Upper Lake, California : Lake County
Issued: 1:10 am PST Dec 18, 2025 Latitude: 39.1646129 Longitude: -122.9105515 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Fog on Overnight 60% chance of rain on Thursday 100% chance of rain on Friday 70% chance of rain on Saturday Rain on Sunday Rain on Monday 70% chance of rain on Tuesday 70% chance of rain on Wednesday
Low: 36°F High: 59°F High: 59°F High: 55°F High: 58°F High: 55°F High: 54°F High: 54°F
Low: 40°F Low: 36°F Low: 40°F Low: 37°F Low: 33°F Low: 34°F  
Fog Rain Rain Rain Rain Rain Rain Rain
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Current Conditions at
UKIAH - (KUKI)
45°
Clear
Fog
as of 2:11 AM PST
Rel. Humidity: 100%
Dew Point: 45°F
Visibility: 1/2 Miles
Pressure: 30.15 in.
Flight Rule: IFR
Wind Data
Calm
Current Conditions at
SANTA ROSA - (KSTS)
41°
Mostly Clear
Fog
as of 1:53 AM PST
Rel. Humidity: 100%
Dew Point: 41°F
Visibility: 1/4 Miles
Pressure: 30.15 in.
Flight Rule: IFR
Wind Data
Calm
Current Conditions at
MARYSVILLE - (KMYV)
52°
Cloudy
Mist
as of 2:18 AM PST
Rel. Humidity: 100%
Dew Point: 52°F
Visibility: 1 1/2 Miles
Pressure: 30.16 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 400ft
Current Conditions at
OROVILLE - (KOVE)
52°
Mostly Clear
Mist
as of 2:40 AM PST
Rel. Humidity: 100%
Dew Point: 52°F
Visibility: 1 Miles
Pressure: 30.16 in.
Flight Rule: IFR
Wind Data
Calm
Fog on Overnight Overnight... Areas of fog. Otherwise, mostly cloudy, with a low around 36. Calm wind.
60% chance of rain Thursday Thursday... Rain likely, mainly after 4pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 59. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%.
80% chance of rain Thursday Night Thursday Night... Rain. Low around 40. Light southwest wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
100% chance of rain Friday Friday... Rain. High near 59. South southwest wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
80% chance of rain Friday Night Friday Night... Rain, mainly before 10pm. Low around 36. Light west wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
70% chance of rain Saturday Saturday... Rain likely, mainly after 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 55. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
100% chance of rain Saturday Night Saturday Night... Rain. Low around 40. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Rain on Sunday Sunday... Rain. Cloudy, with a high near 58.
Rain on Sunday Night Sunday Night... Rain. Cloudy, with a low around 37.
Rain on Monday Monday... Rain. Mostly cloudy, with a high near 55.
70% chance of rain Monday Night Monday Night... Rain likely. Mostly cloudy, with a low around 33.
70% chance of rain Tuesday Tuesday... Rain likely. Mostly cloudy, with a high near 54.
Rain on Tuesday Night Tuesday Night... Rain. Mostly cloudy, with a low around 34.
70% chance of rain Wednesday Wednesday... Rain likely. Mostly cloudy, with a high near 54.
Current Radar Image


Sun Almanac for Upper Lake, California
Sunrise: 07:26 AM
Sunset: 4:51 PM
Civil Sunrise:06:56 AM
Civil Sunset: 5:21 PM
Nautical Sunrise: 06:22 AM
Nautical Sunset: 5:55 PM
Astro Sunrise: 05:50 AM
Astro Sunset: 6:27 PM
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