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O'Brien, California Weather Forecast
O'Brien, California Weather
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Weather Forecast for O'Brien, California : Shasta County
Issued: 1:21 am PST Dec 18, 2025 Latitude: 40.8120946 Longitude: -122.3241746 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
30% chance of rain on Overnight 70% chance of rain on Thursday 100% chance of rain on Friday 80% chance of rain on Saturday Thunderstorms on Sunday Rain on Monday Rain on Tuesday Rain on Wednesday
Low: 42°F High: 48°F High: 49°F High: 47°F High: 49°F High: 50°F High: 47°F High: 47°F
Low: 46°F Low: 42°F Low: 46°F Low: 43°F Low: 41°F Low: 41°F  
Rain Rain Rain Rain Thunderstorms Rain Rain Rain
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Current Conditions at
REDDING - (KRDD)
50°
Cloudy
as of 1:53 AM PST
Rel. Humidity: 87%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 2300ft
Current Conditions at
MT SHASTA - (KMHS)
37°
Mostly Cloudy
as of 2:34 AM PST
Rel. Humidity: 100%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 300ft, Broken at 8000ft, Broken at 11000ft
Current Conditions at
RED BLUFF - (KRBL)
52°
Cloudy
as of 1:54 AM PST
Rel. Humidity: 93%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: MVFR
Wind Data
5 MPH
300° Northwest
Cloud Level(s): Solid Overcast at 1200ft
Current Conditions at
ARCATA - (KACV)
48°
Cloudy
as of 1:53 AM PST
Rel. Humidity: 93%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 9000ft
30% chance of rain Overnight Overnight... A 30 percent chance of showers, mainly before 3am. Patchy fog before 4am, then patchy fog after 5am. Otherwise, cloudy, with a low around 42. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
70% chance of rain Thursday Thursday... Showers likely, mainly before 4pm. Patchy fog before 2pm. Otherwise, cloudy, with a high near 48. South wind 3 to 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
100% chance of rain Thursday Night Thursday Night... Showers, mainly after 1am. The rain could be heavy at times. Areas of fog after 9pm. Low around 46. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
100% chance of rain Friday Friday... Showers. The rain could be heavy at times. High near 49. South southwest wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
90% chance of rain Friday Night Friday Night... Showers. Low around 42. Southwest wind 6 to 8 mph. Chance of precipitation is 90%.
80% chance of rain Saturday Saturday... Showers. High near 47. Chance of precipitation is 80%.
100% chance of rain Saturday Night Saturday Night... Showers. The rain could be heavy at times. Low around 46. Chance of precipitation is 100%.
Thunderstorms on Sunday Sunday... Showers and possibly a thunderstorm. Cloudy, with a high near 49.
Thunderstorms on Sunday Night Sunday Night... Showers and possibly a thunderstorm. Cloudy, with a low around 43.
Rain on Monday Monday... Showers. Cloudy, with a high near 50.
Rain on Monday Night Monday Night... Showers likely. Mostly cloudy, with a low around 41.
Rain on Tuesday Tuesday... Showers likely. Mostly cloudy, with a high near 47.
Rain on Tuesday Night Tuesday Night... Showers. Mostly cloudy, with a low around 41.
Rain on Wednesday Wednesday... Showers likely. Mostly cloudy, with a high near 47.
Current Radar Image


Sun Almanac for O'Brien, California
Sunrise: 07:29 AM
Sunset: 4:44 PM
Civil Sunrise:06:58 AM
Civil Sunset: 5:15 PM
Nautical Sunrise: 06:23 AM
Nautical Sunset: 5:49 PM
Astro Sunrise: 05:50 AM
Astro Sunset: 6:22 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.