National Weather Service Forecast for: Helena CA
Issued by: National Weather Service Eureka, CA
Updated: 2:10 am PDT Sep 13, 2026
 
Overnight

Overnight: Mostly clear, with a low around 45. West southwest wind around 8 mph.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 73. West northwest wind 7 to 9 mph.
Sunny
 Sunday
Night
Sunday Night: Clear, with a low around 47. North northwest wind 3 to 8 mph.
Clear
 Monday

Monday: Sunny, with a high near 85. Light and variable wind.
Sunny
 Monday
Night
Monday Night: Clear, with a low around 53. West wind 5 to 7 mph becoming north after midnight.
Clear
 Tuesday

Tuesday: Sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 54.
Clear
 Wednesday

Wednesday: Sunny, with a high near 88.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 56.
Clear
Lo 45 °F Hi 73 °F Lo 47 °F Hi 85 °F Lo 53 °F Hi 88 °F Lo 54 °F Hi 88 °F Lo 56 °F

 

Overnight
 
 Mostly clear, with a low around 45. West southwest wind around 8 mph.
Sunday
 
 Sunny, with a high near 73. West northwest wind 7 to 9 mph.
Sunday Night
 
 Clear, with a low around 47. North northwest wind 3 to 8 mph.
Monday
 
 Sunny, with a high near 85. Light and variable wind.
Monday Night
 
 Clear, with a low around 53. West wind 5 to 7 mph becoming north after midnight.
Tuesday
 
 Sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
 
 Clear, with a low around 54.
Wednesday
 
 Sunny, with a high near 88.
Wednesday Night
 
 Clear, with a low around 56.
Thursday
 
 Sunny, with a high near 92.
Thursday Night
 
 Clear, with a low around 57.
Friday
 
 Sunny, with a high near 92.
Friday Night
 
 Clear, with a low around 56.
Saturday
 
 Sunny, with a high near 88.

 

Forecast from NOAA-NWS for Helena CA.