National Weather Service Forecast for: Alturas CA
Issued by: National Weather Service Medford, OR
Updated: 10:41 am PDT Mar 19, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 80. West southwest wind 5 to 9 mph.
Sunny
 Tonight

Tonight: Mostly clear, with a low around 42. West wind 5 to 8 mph becoming calm in the evening.
Mostly Clear
 Friday

Friday: Sunny, with a high near 84. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Sunny
 Friday
Night
Friday Night: Partly cloudy, with a low around 43. West wind 6 to 11 mph becoming light in the evening.
Partly Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 71. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Mostly Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 33.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 71.
Sunny
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 40.
Partly Cloudy
 Monday

Monday: Mostly sunny, with a high near 73.
Mostly Sunny
Hi 80 °F Lo 42 °F Hi 84 °F Lo 43 °F Hi 71 °F Lo 33 °F Hi 71 °F Lo 40 °F Hi 73 °F

 

This Afternoon
 
 Sunny, with a high near 80. West southwest wind 5 to 9 mph.
Tonight
 
 Mostly clear, with a low around 42. West wind 5 to 8 mph becoming calm in the evening.
Friday
 
 Sunny, with a high near 84. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Friday Night
 
 Partly cloudy, with a low around 43. West wind 6 to 11 mph becoming light in the evening.
Saturday
 
 Mostly sunny, with a high near 71. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Saturday Night
 
 Mostly clear, with a low around 33.
Sunday
 
 Sunny, with a high near 71.
Sunday Night
 
 Partly cloudy, with a low around 40.
Monday
 
 Mostly sunny, with a high near 73.
Monday Night
 
 Mostly cloudy, with a low around 43.
Tuesday
 
 Mostly sunny, with a high near 76.
Tuesday Night
 
 Partly cloudy, with a low around 39.
Wednesday
 
 Mostly sunny, with a high near 65.

 

Forecast from NOAA-NWS for Alturas CA.