National Weather Service Forecast for: 3 Miles NNW Fullerton Municipal CA
Issued by: National Weather Service Los Angeles/Oxnard, CA
Updated: 1:21 pm PST Dec 22, 2025
 
This
Afternoon
This Afternoon: Partly sunny, with a high near 67. West southwest wind around 5 mph.
Partly Sunny
 Tonight

Tonight: Mostly cloudy, with a low around 56. South southwest wind around 5 mph becoming calm.
Mostly Cloudy
 Tuesday

Tuesday: Rain, mainly after 4pm. High near 66. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
then Rain
 Tuesday
Night
Tuesday Night: Rain before 10pm, then rain and possibly a thunderstorm between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 59. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain
 Wednesday

Wednesday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 64. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Heavy Rain
 Wednesday
Night
Wednesday Night: Showers. Low around 56. Chance of precipitation is 90%.
Showers
 Christmas
Day
Christmas Day: Showers. High near 64. Chance of precipitation is 90%.
Showers
 Thursday
Night
Thursday Night: Showers. Cloudy, with a low around 55.
Showers
 Friday

Friday: Showers. Mostly cloudy, with a high near 61.
Showers
Hi 67 °F Lo 56 °F Hi 66 °F Lo 59 °F Hi 64 °F Lo 56 °F Hi 64 °F Lo 55 °F Hi 61 °F

Flood Watch
 

This Afternoon
 
 Partly sunny, with a high near 67. West southwest wind around 5 mph.
Tonight
 
 Mostly cloudy, with a low around 56. South southwest wind around 5 mph becoming calm.
Tuesday
 
 Rain, mainly after 4pm. High near 66. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
 
 Rain before 10pm, then rain and possibly a thunderstorm between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 59. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 64. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Wednesday Night
 
 Showers. Low around 56. Chance of precipitation is 90%.
Christmas Day
 
 Showers. High near 64. Chance of precipitation is 90%.
Thursday Night
 
 Showers. Cloudy, with a low around 55.
Friday
 
 Showers. Mostly cloudy, with a high near 61.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 48.
Saturday
 
 A slight chance of showers. Mostly sunny, with a high near 61.
Saturday Night
 
 Mostly clear, with a low around 46.
Sunday
 
 Sunny, with a high near 65.

 

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