Fullerton, California Weather Forecast
Today in Fullerton: slight rain with a high near 67°F and a low around 59°F. Rain chance 34%. Rain chances peak at 24% on Friday. Warming trend: highs climb from 67°F today to 79°F by Sunday.
Forecast updated 7:05 PM PDT, Oct 22
Active Weather Alerts
7-Day Forecast for Fullerton
Today 10/22
34%
67°59°
Fri 10/23
24%
70°57°
Sat 10/24
76°56°
Sun 10/25
79°58°
Mon 10/26
81°59°
Tue 10/27
81°59°
Wed 10/28
78°59°
Next 24 Hours
| Now | 10 PM | 11 PM | Fri12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky |  | | | | |  | | | | | | | | | | | | | | | | | |  |
| Temp | 61° | 60° | 59° | 59° | 58° | 58° | 58° | 58° | 57° | 57° | 57° | 59° | 61° | 63° | 65° | 67° | 68° | 70° | 70° | 70° | 69° | 68° | 66° | 64° |
| Rain | 8% | 9% | 6% | 5% | 12% | 24% | 12% | 6% | 5% | 3% | 1% | 1% | 1% | 2% | 2% | 2% | 4% | 5% | 6% | 5% | 6% | 4% | 3% | 3% |
| Wind | SSW 3 | S 4 | ESE 6 | SE 5 | ESE 5 | ESE 5 | ESE 4 | E 4 | E 3 | ENE 4 | E 4 | ENE 5 | E 3 | SE 1 | SW 0 | WSW 1 | WSW 2 | WSW 3 | WSW 0 | WSW 3 | WSW 3 | W 1 | W 1 | WSW 0 |
Growing Conditions
Growing degree days
4,463
since Apr 1, base 50°F
Rain, last 30 days
0.45 in
model analysis
Rain, year to date
8.64 in
since Jan 1
2-inch soil temperature
71°F
yesterday, daily average
Reference ET, last 7 days
1.36 in
FAO-56 grass reference
Through Oct 21. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Fullerton →
Current Stats & Observations
NWS Forecast
About Fullerton Weather
Fullerton sits at about 266 feet above sea level in Orange County, California. About 138,632 people live in the Fullerton area. Official forecasts and warnings for the area come from the National Weather Service SGX office, and the nearest NEXRAD radar site is KSOX. The city is in USDA plant hardiness zone 10a, where the coldest winter night typically falls between 30 to 35°F. Freezing temperatures are rare here.
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