Summerville, California Weather
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Weather Forecast for Summerville, California : Siskiyou County
Issued: 10:40 pm PDT Sep 15, 2025 Latitude: 41.0987505 Longitude: -123.067815 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Overnight Sunny on Tuesday Sunny on Wednesday Sunny on Thursday 10% chance of on Friday 20% chance of thunderstorms on Saturday Sunny on Sunday Sunny on Monday
Low: 60°F High: 88°F High: 90°F High: 88°F High: 81°F High: 81°F High: 84°F High: 84°F
Low: 60°F Low: 62°F Low: 62°F Low: 60°F Low: 58°F Low: 57°F  
Mostly Clear Sunny Sunny Sunny Partly Sunny Thunderstorms Sunny Sunny
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Current Conditions at
MT SHASTA - (KMHS)
48°
Clear
as of 12:56 AM PDST
Rel. Humidity: 76%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ARCATA - (KACV)
54°
Clear
as of 12:53 AM PDST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MONTAGUE/SSK - (KSIY)
55°
Clear
as of 12:53 AM PDST
Rel. Humidity: 50%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
5 MPH
070° East
Cloud Level(s): Clear
Current Conditions at
REDDING - (KRDD)
66°
Clear
as of 12:53 AM PDST
Rel. Humidity: 45%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 60. Light southeast wind.
Sunny on Tuesday Tuesday... Sunny, with a high near 88. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.
Clear on Tuesday Night Tuesday Night... Clear, with a low around 60. West southwest wind around 5 mph becoming light and variable in the evening.
Sunny on Wednesday Wednesday... Sunny, with a high near 90. Calm wind becoming west 5 to 7 mph in the afternoon.
Clear on Wednesday Night Wednesday Night... Clear, with a low around 62. West wind around 6 mph becoming light and variable in the evening.
Sunny on Thursday Thursday... Sunny, with a high near 88.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 62.
10% chance of Friday Friday... A slight chance of showers after 11am. Partly sunny, with a high near 81.
10% chance of rain Friday Night Friday Night... A slight chance of showers before 11pm. Partly cloudy, with a low around 60.
20% chance of thunderstorms Saturday Saturday... A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 81.
10% chance of rain Saturday Night Saturday Night... A slight chance of showers. Mostly clear, with a low around 58.
Sunny on Sunday Sunday... Sunny, with a high near 84.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 57.
Sunny on Monday Monday... Sunny, with a high near 84.
Current Radar Image


Sun Almanac for Summerville, California
Sunrise: 06:54 AM
Sunset: 7:19 PM
Civil Sunrise:06:27 AM
Civil Sunset: 7:47 PM
Nautical Sunrise: 05:54 AM
Nautical Sunset: 8:19 PM
Astro Sunrise: 05:21 AM
Astro Sunset: 8:53 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.