National Weather Service Forecast for: 4 Miles S Rialto CA
Issued by: National Weather Service San Diego, CA
Updated: 1:04 am PST Feb 2, 2026
 
Overnight

Overnight: Mostly clear, with a low around 52. Calm wind.
Mostly Clear
 Monday

Monday: Sunny, with a high near 79. Calm wind becoming west around 5 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 52. West wind around 5 mph becoming calm.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 83. North wind 5 to 15 mph, with gusts as high as 25 mph.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 54. North wind 10 to 15 mph, with gusts as high as 25 mph.
Clear
 Wednesday

Wednesday: Sunny, with a high near 84.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 55.
Mostly Clear
 Thursday

Thursday: Mostly sunny, with a high near 82.
Mostly Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 54.
Mostly Cloudy
Lo 52 °F Hi 79 °F Lo 52 °F Hi 83 °F Lo 54 °F Hi 84 °F Lo 55 °F Hi 82 °F Lo 54 °F

Air Quality Alert
 

Overnight
 
 Mostly clear, with a low around 52. Calm wind.
Monday
 
 Sunny, with a high near 79. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
 
 Mostly clear, with a low around 52. West wind around 5 mph becoming calm.
Tuesday
 
 Sunny, with a high near 83. North wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
 
 Clear, with a low around 54. North wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
 
 Sunny, with a high near 84.
Wednesday Night
 
 Mostly clear, with a low around 55.
Thursday
 
 Mostly sunny, with a high near 82.
Thursday Night
 
 Mostly cloudy, with a low around 54.
Friday
 
 Partly sunny, with a high near 77.
Friday Night
 
 Partly cloudy, with a low around 51.
Saturday
 
 Sunny, with a high near 78.
Saturday Night
 
 Mostly clear, with a low around 52.
Sunday
 
 Sunny, with a high near 80.

 

Forecast from NOAA-NWS for 4 Miles S Rialto CA.