National Weather Service Forecast for: 12 Miles SSE Illinois Valley OR
Issued by: National Weather Service Eureka, CA
Updated: 2:46 pm PDT Aug 19, 2026
 
Overnight

Overnight: Mostly clear, with a low around 62. Calm wind.
Mostly Clear
Thursday

Thursday: Sunny, with a high near 79. Calm wind becoming west 5 to 8 mph in the afternoon.
Sunny
Thursday
Night
Thursday Night: Increasing clouds, with a low around 61. West wind around 6 mph becoming calm  in the evening.
Increasing
Clouds
Friday

Friday: Cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind becoming west 5 to 7 mph in the afternoon.
Gradual
Clearing
Friday
Night
Friday Night: Mostly clear, with a low around 51. West wind 5 to 8 mph becoming calm  in the evening.
Mostly Clear
Saturday

Saturday: Sunny, with a high near 67. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Sunny
Saturday
Night
Saturday Night: Clear, with a low around 50.
Clear
Sunday

Sunday: Sunny, with a high near 75.
Sunny
Sunday
Night
Sunday Night: Mostly clear, with a low around 57.
Mostly Clear
Lo 62 °F Hi 79 °F Lo 61 °F Hi 73 °F Lo 51 °F Hi 67 °F Lo 50 °F Hi 75 °F Lo 57 °F

 

Overnight
 
Mostly clear, with a low around 62. Calm wind.
Thursday
 
Sunny, with a high near 79. Calm wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
 
Increasing clouds, with a low around 61. West wind around 6 mph becoming calm in the evening.
Friday
 
Cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind becoming west 5 to 7 mph in the afternoon.
Friday Night
 
Mostly clear, with a low around 51. West wind 5 to 8 mph becoming calm in the evening.
Saturday
 
Sunny, with a high near 67. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Saturday Night
 
Clear, with a low around 50.
Sunday
 
Sunny, with a high near 75.
Sunday Night
 
Mostly clear, with a low around 57.
Monday
 
Sunny, with a high near 75.
Monday Night
 
Mostly clear, with a low around 57.
Tuesday
 
Sunny, with a high near 73.
Tuesday Night
 
Mostly clear, with a low around 55.
Wednesday
 
Sunny, with a high near 72.

 

Forecast from NOAA-NWS for 12 Miles SSE Illinois Valley OR.