Currently: 55 °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 | ||
| Tue Dec 9 |  | 83 / 52 °F | Sunny. | 79 °F | 3 mph | ↑ | 20% | 0% | 0.00" | 3 (Moderate) | 6:45 am | 4:42 pm |
| Wed Dec 10 | | 80 / 51 °F | Sunny. | 78 °F | 4 mph | ↑ | 25% | 0% | 0.00" | 3 (Moderate) | 6:46 am | 4:43 pm |
| Thu Dec 11 | | 76 / 52 °F | Sunny. | 77 °F | 5 mph | ↑ | 31% | 0% | 0.00" | 3 (Moderate) | 6:46 am | 4:43 pm |
| Fri Dec 12 |  | 76 / 51 °F | Cloudy. | 77 °F | 4 mph | ↑ | 31% | 0% | 0.00" | 0 (Low) | 6:47 am | 4:43 pm |
| Sat Dec 13 | | 74 / 49 °F | Overcast. | 77 °F | 4 mph | ↑ | 34% | 0% | 0.00" | 0 (Low) | 6:48 am | 4:43 pm |
| Sun Dec 14 |  | 75 / 49 °F | Mostly cloudy. | 77 °F | 4 mph | ↑ | 32% | 0% | 0.00" | 0 (Low) | 6:48 am | 4:44 pm |
| Mon Dec 15 | | 78 / 50 °F | Sunny. | 77 °F | 4 mph | ↑ | 20% | 0% | 0.00" | 3 (Moderate) | 6:49 am | 4:44 pm |
| Tue Dec 16 |  | 76 / 55 °F | Afternoon clouds. | 75 °F | 2 mph | ↑ | 11% | 1% | 0.00" | 0 (Low) | 6:50 am | 4:44 pm |
| Wed Dec 17 | | 76 / 59 °F | Overcast. | 74 °F | 2 mph | ↑ | 9% | 1% | 0.00" | 0 (Low) | 6:50 am | 4:45 pm |
| Thu Dec 18 | | 76 / 58 °F | Overcast. | 74 °F | 2 mph | ↑ | 9% | 3% | 0.00" | 0 (Low) | 6:51 am | 4:45 pm |
| Fri Dec 19 | | 75 / 58 °F | Overcast. | 74 °F | 3 mph | ↑ | 10% | 3% | 0.00" | 0 (Low) | 6:52 am | 4:46 pm |
| Sat Dec 20 | | 74 / 57 °F | Sunny. | 75 °F | 4 mph | ↑ | 20% | 3% | 0.00" | 3 (Moderate) | 6:52 am | 4:46 pm |
| Sun Dec 21 | | 74 / 57 °F | Sunny. | 76 °F | 6 mph | ↑ | 29% | 2% | 0.00" | 3 (Moderate) | 6:53 am | 4:47 pm |
| Mon Dec 22 | | 77 / 57 °F | Sunny. | 78 °F | 4 mph | ↑ | 31% | 2% | 0.00" | 3 (Moderate) | 6:53 am | 4:47 pm |
| Tue Dec 23 | | 79 / 54 °F | Sunny. | 78 °F | 5 mph | ↑ | 26% | 1% | 0.00" | 3 (Moderate) | 6:54 am | 4:48 pm |
| * Updated Monday, December 8, 2025 7:24:05 pm Fullerton time - Weather by CustomWeather, © 2025 | ||||||||||||