Hazardous Weather Conditions
Current conditions at
FW0063 Fullerton CSU (F0063)
Lat: 33.8805°NLon: 117.88417°WElev: 243.01ft.NA
80°F
27°C
| Humidity | 30% |
| Wind Speed | ESE 1 MPH |
| Barometer | 30.05 in (1017.61 mb) |
| Dewpoint | 46°F (8°C) |
| Visibility | NA |
| Heat Index | 79°F (26°C) |
| Last update | 13 Mar 10:23 AM PDT |
Extended Forecast for
Fullerton CA
Extreme Heat Watch March 16, 10:00am until March 20, 08:00pm
Heat Advisory March 13, 10:34am until March 13, 08:00pm
NOW until 8:00pm Fri

Heat Advisory
Today

High: 91 °F
Sunny
Tonight

Low: 58 °F
Partly Cloudy
Saturday
High: 81 °F
Patchy Fog
then Mostly
SunnySaturday Night

Low: 55 °F
Mostly Clear
Sunday
High: 88 °F
Patchy Fog
then SunnySunday Night

Low: 59 °F
Mostly Clear
Monday
High: 91 °F
Patchy Fog
then SunnyMonday Night

Low: 62 °F
Mostly Clear
Detailed Forecast
Today
Sunny, with a high near 91. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Tonight
Partly cloudy, with a low around 58. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog between 8am and 11am. Otherwise, mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 59.
Monday
Patchy fog before 11am. Otherwise, sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Clear, with a low around 63.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny, with a high near 95.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
12:24 am PDT Mar 13, 2026
10am PDT Mar 13, 2026-6pm PDT Mar 19, 2026



