Currently: 48 °F. Clear. (Weather station: Fullerton Municipal Airport, USA). See more current weatherFullerton Extended Forecast with high and low temperatures
2 Week Extended Forecast in Fullerton, California, USA
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Sat Dec 6 |  | 70 / 46 °F | Sunny. | 68 °F | 5 mph | ↑ | 46% | 0% | 0.00" | 3 (Moderate) | 6:43 am | 4:42 pm |
| Sun Dec 7 | | 71 / 47 °F | Sunny. | 77 °F | 5 mph | ↑ | 45% | 0% | 0.00" | 3 (Moderate) | 6:43 am | 4:42 pm |
| Mon Dec 8 | | 78 / 49 °F | Sunny. | 78 °F | 4 mph | ↑ | 28% | 0% | 0.00" | 3 (Moderate) | 6:44 am | 4:42 pm |
| Tue Dec 9 | | 80 / 54 °F | Sunny. | 78 °F | 3 mph | ↑ | 17% | 0% | 0.00" | 3 (Moderate) | 6:45 am | 4:42 pm |
| Wed Dec 10 | | 78 / 54 °F | Sunny. | 77 °F | 4 mph | ↑ | 22% | 0% | 0.00" | 3 (Moderate) | 6:46 am | 4:43 pm |
| Thu Dec 11 | | 75 / 49 °F | Sunny. | 77 °F | 5 mph | ↑ | 33% | 0% | 0.00" | 3 (Moderate) | 6:46 am | 4:43 pm |
| Fri Dec 12 | | 74 / 50 °F | Sunny. | 77 °F | 5 mph | ↑ | 38% | 0% | 0.00" | 3 (Moderate) | 6:47 am | 4:43 pm |
| Sat Dec 13 |  | 72 / 51 °F | Overcast. | 77 °F | 4 mph | ↑ | 36% | 3% | 0.00" | 0 (Low) | 6:48 am | 4:43 pm |
| Sun Dec 14 | | 72 / 59 °F | Cloudy. | 77 °F | 4 mph | ↑ | 36% | 5% | 0.00" | 0 (Low) | 6:48 am | 4:44 pm |
| Mon Dec 15 | | 72 / 56 °F | Sunny. | 77 °F | 5 mph | ↑ | 37% | 4% | 0.00" | 3 (Moderate) | 6:49 am | 4:44 pm |
| Tue Dec 16 |  | 72 / 56 °F | Afternoon clouds. | 77 °F | 6 mph | ↑ | 40% | 4% | 0.00" | 3 (Moderate) | 6:50 am | 4:44 pm |
| Wed Dec 17 |  | 71 / 54 °F | Mostly cloudy. | 77 °F | 6 mph | ↑ | 53% | 6% | 0.00" | 0 (Low) | 6:50 am | 4:45 pm |
| Thu Dec 18 | | 72 / 54 °F | Overcast. | 76 °F | 7 mph | ↑ | 60% | 6% | 0.00" | 0 (Low) | 6:51 am | 4:45 pm |
| Fri Dec 19 |  | 76 / 54 °F | Passing showers. Cloudy. | 77 °F | 8 mph | ↑ | 73% | 58% | 0.09" | 0 (Low) | 6:52 am | 4:46 pm |
| Sat Dec 20 |  | 78 / 54 °F | Sprinkles. Overcast. | 80 °F | 2 mph | ↑ | 83% | 60% | 0.11" | 0 (Low) | 6:52 am | 4:46 pm |
| * Updated Friday, December 5, 2025 7:24:06 pm Fullerton time - Weather by CustomWeather, © 2025 | ||||||||||||