Hazardous Weather Conditions
Current conditions at
FW0063 Fullerton CSU (F0063)
Lat: 33.8805°NLon: 117.88417°WElev: 247.0ft.NA
71°F
22°C
| Humidity | 27% |
| Wind Speed | NE 5 MPH |
| Barometer | 30.14 in (1020.66 mb) |
| Dewpoint | 35°F (2°C) |
| Visibility | NA |
| Last update | 30 Dec 12:38 PM PST |
Extended Forecast for
Fullerton CA
Flood Watch December 31, 10:00pm until January 1, 10:00pm
This Afternoon

High: 74 °F
Partly Sunny
Tonight
Low: 60 °F
Mostly Cloudy
then Chance
ShowersWednesday

High: 68 °F
Showers
Wednesday Night

Low: 57 °F
Heavy Rain
New Year's Day

High: 65 °F
Heavy Rain
Thursday Night

Low: 57 °F
Chance
ShowersFriday

High: 65 °F
Slight Chance
ShowersFriday Night

Low: 55 °F
Chance
ShowersSaturday

High: 64 °F
Showers
Likely
Detailed Forecast
This Afternoon
Partly sunny, with a high near 74. East wind around 10 mph, with gusts as high as 20 mph.
Tonight
A slight chance of sprinkles before 10pm, then a chance of showers after 4am. Mostly cloudy, with a low around 60. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers, mainly after 10am. High near 68. East wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers. The rain could be heavy at times. Low around 57. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
New Year's Day
Showers, mainly before 4pm. The rain could be heavy at times. High near 65. South wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Friday
A slight chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 20%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 55.
Saturday
Showers likely. Mostly cloudy, with a high near 64.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 51.
Sunday
A chance of showers. Mostly cloudy, with a high near 64.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 49.
Monday
A slight chance of showers. Mostly cloudy, with a high near 65.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Fullerton CA
33.87°N 117.93°W (Elev. 184 ft)
33.87°N 117.93°W (Elev. 184 ft)
12:27 pm PST Dec 30, 2025
12pm PST Dec 30, 2025-6pm PST Jan 5, 2026



