National Weather Service Forecast for: 3 Miles NNW Fullerton Municipal CA
Issued by: National Weather Service Los Angeles/Oxnard, CA
Updated: 2:12 pm PDT May 26, 2026
 
This
Afternoon
This Afternoon: Mostly cloudy, with a high near 69. South wind around 10 mph.
Mostly Cloudy
 Tonight

Tonight: Mostly cloudy, with a low around 59. Southwest wind 5 to 10 mph becoming south southeast after midnight.
Mostly Cloudy
 Wednesday

Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 68. South southwest wind 5 to 10 mph.
Decreasing
Clouds
 Wednesday
Night
Wednesday Night: A 20 percent chance of showers after 11pm. Increasing clouds, with a low around 58. Southwest wind 5 to 10 mph becoming light west after midnight.
Slight Chance
Showers
 Thursday

Thursday: Partly sunny, with a high near 69. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon.
Partly Sunny
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 58.
Partly Cloudy
 Friday

Friday: Sunny, with a high near 72.
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 56.
Mostly Clear
 Saturday

Saturday: Mostly sunny, with a high near 75.
Mostly Sunny
Hi 69 °F Lo 59 °F Hi 68 °F Lo 58 °F Hi 69 °F Lo 58 °F Hi 72 °F Lo 56 °F Hi 75 °F

 

This Afternoon
 
 Mostly cloudy, with a high near 69. South wind around 10 mph.
Tonight
 
 Mostly cloudy, with a low around 59. Southwest wind 5 to 10 mph becoming south southeast after midnight.
Wednesday
 
 Cloudy, then gradually becoming mostly sunny, with a high near 68. South southwest wind 5 to 10 mph.
Wednesday Night
 
 A 20 percent chance of showers after 11pm. Increasing clouds, with a low around 58. Southwest wind 5 to 10 mph becoming light west after midnight.
Thursday
 
 Partly sunny, with a high near 69. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon.
Thursday Night
 
 Partly cloudy, with a low around 58.
Friday
 
 Sunny, with a high near 72.
Friday Night
 
 Mostly clear, with a low around 56.
Saturday
 
 Mostly sunny, with a high near 75.
Saturday Night
 
 Mostly clear, with a low around 58.
Sunday
 
 Sunny, with a high near 79.
Sunday Night
 
 Mostly clear, with a low around 60.
Monday
 
 Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for 3 Miles NNW Fullerton Municipal CA.