National Weather Service Forecast for: 3 Miles WNW San Bernardino CA
Issued by: National Weather Service San Diego, CA
Updated: 12:18 am PDT Sep 13, 2026
 
Overnight

Overnight: Mostly clear, with a low around 68. Calm wind.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 90. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Sunny
 Sunday
Night
Sunday Night: Clear, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
Clear
 Monday

Monday: Sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 64. South wind around 5 mph becoming calm in the evening.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 87.
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 62.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 88.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 63.
Clear
Lo 68 °F Hi 90 °F Lo 65 °F Hi 90 °F Lo 64 °F Hi 87 °F Lo 62 °F Hi 88 °F Lo 63 °F

 

Overnight
 
 Mostly clear, with a low around 68. Calm wind.
Sunday
 
 Sunny, with a high near 90. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Sunday Night
 
 Clear, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
Monday
 
 Sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
 Mostly clear, with a low around 64. South wind around 5 mph becoming calm in the evening.
Tuesday
 
 Sunny, with a high near 87.
Tuesday Night
 
 Mostly clear, with a low around 62.
Wednesday
 
 Sunny, with a high near 88.
Wednesday Night
 
 Clear, with a low around 63.
Thursday
 
 Sunny, with a high near 90.
Thursday Night
 
 Clear, with a low around 65.
Friday
 
 Sunny, with a high near 95.
Friday Night
 
 Clear, with a low around 69.
Saturday
 
 Sunny, with a high near 97.

 

Forecast from NOAA-NWS for 3 Miles WNW San Bernardino CA.