Currently: 63 °F. Sunny. (Weather station: Fullerton Municipal Airport, USA). See more current weatherHour-by-hour Forecast in Fullerton — Graph
Detailed Hourly Forecast — Next 24 hours
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| Conditions | Comfort | Precipitation | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Feels Like | Wind | Humidity | Chance | Amount | ||
| 9:00 am Sat, Mar 21 |  | 67 °F | Partly cloudy. | 67 °F | 3 mph | ↑ | 68% | 0% | 0.00" (snow) 0.00" (rain) |
| 10:00 am |  | 73 °F | Broken clouds. | 77 °F | 3 mph | ↑ | 56% | 0% | 0.00" (snow) 0.00" (rain) |
| 11:00 am |  | 78 °F | Cloudy. | 79 °F | 3 mph | ↑ | 46% | 0% | 0.00" (snow) 0.00" (rain) |
| 12:00 pm | | 82 °F | Mostly cloudy. | 81 °F | 6 mph | ↑ | 40% | 0% | 0.00" (snow) 0.00" (rain) |
| 1:00 pm | | 85 °F | Broken clouds. | 83 °F | 8 mph | ↑ | 36% | 0% | 0.00" (snow) 0.00" (rain) |
| 2:00 pm | | 86 °F | Partly cloudy. | 85 °F | 10 mph | ↑ | 34% | 0% | 0.00" (snow) 0.00" (rain) |
| 3:00 pm | | 87 °F | Mostly cloudy. | 85 °F | 10 mph | ↑ | 33% | 0% | 0.00" (snow) 0.00" (rain) |
| 4:00 pm | | 85 °F | Cloudy. | 84 °F | 10 mph | ↑ | 35% | 0% | 0.00" (snow) 0.00" (rain) |
| 5:00 pm | | 83 °F | Overcast. | 82 °F | 10 mph | ↑ | 37% | 0% | 0.00" (snow) 0.00" (rain) |
| 6:00 pm | | 81 °F | Overcast. | 81 °F | 8 mph | ↑ | 40% | 0% | 0.00" (snow) 0.00" (rain) |
| 7:00 pm | | 76 °F | Overcast. | 78 °F | 7 mph | ↑ | 49% | 0% | 0.00" (snow) 0.00" (rain) |
| 8:00 pm |  | 74 °F | Overcast. | 77 °F | 5 mph | ↑ | 53% | 0% | 0.00" (snow) 0.00" (rain) |
| 9:00 pm | | 70 °F | Cloudy. | 70 °F | 5 mph | ↑ | 64% | 0% | 0.00" (snow) 0.00" (rain) |
| 10:00 pm | | 66 °F | Cloudy. | 66 °F | 5 mph | ↑ | 73% | 0% | 0.00" (snow) 0.00" (rain) |
| 11:00 pm | | 65 °F | Mostly cloudy. | 65 °F | 5 mph | ↑ | 76% | 0% | 0.00" (snow) 0.00" (rain) |
| 12:00 am Sun, Mar 22 | | 64 °F | Cloudy. | 64 °F | 5 mph | ↑ | 79% | 0% | 0.00" (snow) 0.00" (rain) |
| 1:00 am | | 63 °F | Cloudy. | 63 °F | 4 mph | ↑ | 82% | 0% | 0.00" (snow) 0.00" (rain) |
| 2:00 am | | 61 °F | Overcast. | 61 °F | 4 mph | ↑ | 84% | 0% | 0.00" (snow) 0.00" (rain) |
| 3:00 am | | 61 °F | Overcast. | 61 °F | 3 mph | ↑ | 86% | 0% | 0.00" (snow) 0.00" (rain) |
| 4:00 am | | 60 °F | Overcast. | 60 °F | 3 mph | ↑ | 86% | 0% | 0.00" (snow) 0.00" (rain) |
| 5:00 am | | 60 °F | Overcast. | 60 °F | 2 mph | ↑ | 86% | 0% | 0.00" (snow) 0.00" (rain) |
| 6:00 am | | 60 °F | Overcast. | 60 °F | 2 mph | ↑ | 86% | 0% | 0.00" (snow) 0.00" (rain) |
| 7:00 am | | 60 °F | Overcast. | 60 °F | 2 mph | ↑ | 86% | 0% | 0.00" (snow) 0.00" (rain) |
| 8:00 am | | 62 °F | Overcast. | 62 °F | 2 mph | ↑ | 80% | 0% | 0.00" (snow) 0.00" (rain) |
| * Updated Saturday, March 21, 2026 6:42:39 am Fullerton time - Weather by CustomWeather, © 2026 | |||||||||