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Upton, California Weather Forecast
Upton, California Weather
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Weather Forecast for Upton, California : Siskiyou County
Issued: 12:41 am PST Dec 18, 2025 Latitude: 41.3409847 Longitude: -122.3480686 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Overnight 70% chance of rain on Thursday 100% chance of rain on Friday 60% chance of rain & snow on Saturday Rain on Sunday 70% chance of rain & snow on Monday Rain and Snow on Tuesday 70% chance of rain & snow on Wednesday
Low: 38°F High: 47°F High: 45°F High: 44°F High: 46°F High: 43°F High: 41°F High: 41°F
Low: 38°F Low: 33°F Low: 36°F Low: 34°F Low: 31°F Low: 31°F  
Mostly Cloudy Rain Rain Rain & Snow Rain Rain & Snow Rain and Snow Rain & Snow
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Current Conditions at
MT SHASTA - (KMHS)
39°
Cloudy
as of 12:56 AM PST
Rel. Humidity: 100%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 300ft, Scattered at 6500ft, Solid Overcast at 8500ft
Current Conditions at
MONTAGUE/SSK - (KSIY)
39°
Cloudy
as of 12:53 AM PST
Rel. Humidity: 86%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
3 MPH
160° South
Cloud Level(s): Solid Overcast at 6500ft
Current Conditions at
REDDING - (KRDD)
50°
Cloudy
as of 12:53 AM PST
Rel. Humidity: 87%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 2400ft
Current Conditions at
KLAMATH FALLS - (KLMT)
34°
Cloudy
as of 12:53 AM PST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Broken at 7500ft, Solid Overcast at 9000ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a steady temperature around 38. Southeast wind around 10 mph.

70% chance of rain Thursday Thursday... Rain likely after 10am. Mostly cloudy, with a high near 47. Southeast wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.

90% chance of rain & snow Thursday Night Thursday Night... Rain. Snow level 6900 feet. Low around 38. Breezy, with a southeast wind 21 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

100% chance of rain Friday Friday... Rain. High near 45. South wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

80% chance of rain & snow Friday Night Friday Night... Rain before 4am, then a chance of rain and snow. Snow level 6100 feet lowering to 4900 feet after midnight . Low around 33. South southwest wind around 11 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

60% chance of rain & snow Saturday Saturday... A chance of rain and snow before 10am, then rain likely. Snow level 4400 feet rising to 5600 feet in the afternoon. Mostly cloudy, with a high near 44. Chance of precipitation is 60%. Little or no snow accumulation expected.

90% chance of rain & snow Saturday Night Saturday Night... Rain. Snow level 6000 feet rising to 6800 feet after midnight. Low around 36. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

Rain on Sunday Sunday... Rain. Cloudy, with a high near 46.

Rain and Snow on Sunday Night Sunday Night... Rain. Snow level 6800 feet. Cloudy, with a low around 34.

70% chance of rain & snow Monday Monday... Rain likely. Snow level 5700 feet. Mostly cloudy, with a high near 43.

70% chance of rain & snow Monday Night Monday Night... Rain likely. Snow level 5200 feet. Mostly cloudy, with a low around 31.

Rain and Snow on Tuesday Tuesday... Rain and snow likely. Snow level 5000 feet. Mostly cloudy, with a high near 41.

70% chance of rain & snow Tuesday Night Tuesday Night... Rain likely. Snow level 5100 feet. Mostly cloudy, with a low around 31.

70% chance of rain & snow Wednesday Wednesday... Rain likely, possibly mixed with snow. Snow level 4700 feet. Mostly cloudy, with a high near 41.

Current Radar Image


Sun Almanac for Upton, California
Sunrise: 07:31 AM
Sunset: 4:42 PM
Civil Sunrise:06:59 AM
Civil Sunset: 5:13 PM
Nautical Sunrise: 06:24 AM
Nautical Sunset: 5:48 PM
Astro Sunrise: 05:51 AM
Astro Sunset: 6:22 PM
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