Weather in Fullerton, CA
Updated 2026-08-11 09:00 local time · ZIP codes 92831, 92832, 92833, 92835
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
73°5% rain82°3% rain91°1% rain93°1% rain93°1% rain93°1% rain93°1% rain94°1% rain92°1% rain87°2% rain80°5% rain
74°8% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 8%).
It feels like 77°F with winds near 3 mph.
73°F, 5% rain chance and 3 mph wind.
Visibility is around 10 mi; gusts may reach 14 mph.
Current temperature is 73°F, wind 3 mph, rain chance up to 8%.
UV index is 3.
Fullerton weather today
Sunny and 73°F in Fullerton, CA. Today's high is 94°F with a 4% rain chance. Winds are around 3 mph with gusts near 4 mph. Relative humidity is 78%, pressure is 29.99 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Fullerton
Sunrise is at 06:10 AM and sunset is at 07:43 PM. Tomorrow's forecast calls for Sunny with a high near 80°F and a low near 72°F. The maximum rain chance is 4%.