Currently: 53 °F. Fog. (Weather station: Fullerton Municipal Airport, USA). See more current weatherPast Weather in Fullerton — Graph
Fullerton Temperature Yesterday
Maximum temperature yesterday: 75 °F (at 1:53 pm)
Minimum temperature yesterday: 46 °F (at 5:53 am)
Average temperature yesterday: 59 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 85 °F (Jan 14, 2:53 pm) | 100% (Jan 20, 10:53 pm) | 30.40 "Hg (Jan 20, 10:53 pm) |
| Low | 40 °F (Jan 10, 4:53 am) | 14% (Jan 11, 1:53 pm) | 29.86 "Hg (Jan 7, 3:53 pm) |
| Average | 60 °F | 53% | 30.09 "Hg |
| * Reported Jan 6 6:53 am — Jan 21 6:53 am, Fullerton. Weather by CustomWeather, © 2026 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Fullerton Weather History for the Previous 24 Hours
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| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 6:53 am Wed, Jan 21 | | 55 °F | Fog. | 9 mph | ↑ | 93% | 30.08 "Hg | 2 mi |
| 6:25 am | | 55 °F | Fog. | 5 mph | ↑ | 93% | 30.09 "Hg | 3 mi |
| 5:53 am |  | 56 °F | Fog. | No wind | ↑ | 90% | 30.08 "Hg | 3 mi |
| 5:18 am | | 54 °F | Fog. | 3 mph | ↑ | 97% | 30.08 "Hg | 3 mi |
| 4:53 am | | 54 °F | Fog. | No wind | ↑ | 97% | 30.07 "Hg | 3 mi |
| 3:53 am | | 54 °F | Fog. | 6 mph | ↑ | 97% | 30.07 "Hg | 4 mi |
| 3:08 am | | 55 °F | Fog. | 5 mph | ↑ | 96% | 30.09 "Hg | 2 mi |
| 2:53 am | | 55 °F | Fog. | No wind | ↑ | 96% | 30.09 "Hg | 3 mi |
| 2:42 am | | 55 °F | Fog. | No wind | ↑ | 96% | 30.09 "Hg | 2 mi |
| 1:53 am | | 55 °F | Fog. | No wind | ↑ | 96% | 30.09 "Hg | 2 mi |
| 1:36 am | | 55 °F | Fog. | No wind | ↑ | 100% | 30.09 "Hg | 2 mi |
| 1:04 am | | 55 °F | Fog. | No wind | ↑ | 96% | 30.09 "Hg | 2 mi |
| 12:26 am | | 55 °F | Fog. | 3 mph | ↑ | 100% | 30.09 "Hg | 2 mi |
| 12:10 am | | 55 °F | Fog. | No wind | ↑ | 100% | 30.09 "Hg | 1 mi |
| 11:53 pm Tue, Jan 20 | | 54 °F | Fog. | 3 mph | ↑ | 100% | 30.08 "Hg | 0 mi |
| 10:53 pm | | 54 °F | Fog. | 3 mph | ↑ | 100% | 30.06 "Hg | 0 mi |
| 10:36 pm | | 55 °F | Fog. | 5 mph | ↑ | 96% | 30.06 "Hg | 1 mi |
| 9:53 pm |  | 57 °F | Clear. | No wind | ↑ | 90% | 30.04 "Hg | 7 mi |
| 8:53 pm | | 58 °F | Clear. | 3 mph | ↑ | 87% | 30.03 "Hg | 9 mi |
| 7:53 pm | | 60 °F | Clear. | No wind | ↑ | 86% | 30.04 "Hg | 8 mi |
| 6:53 pm | | 62 °F | Clear. | No wind | ↑ | 78% | 30.04 "Hg | 10 mi |
| 5:53 pm | | 62 °F | Clear. | 3 mph | ↑ | 75% | 30.03 "Hg | 10 mi |
| 4:53 pm |  | 65 °F | Sunny. | 6 mph | ↑ | 66% | 30.03 "Hg | 10 mi |
| 3:53 pm | | 71 °F | Sunny. | 5 mph | ↑ | 47% | 30.02 "Hg | 10 mi |
| 2:53 pm | | 75 °F | Sunny. | 5 mph | ↑ | 45% | 30.01 "Hg | 10 mi |
| 1:53 pm | | 75 °F | Sunny. | No wind | ↑ | 42% | 30.01 "Hg | 10 mi |
| 12:53 pm | | 72 °F | Sunny. | 5 mph | ↑ | 48% | 30.04 "Hg | 10 mi |
| 11:53 am | | 70 °F | Sunny. | No wind | ↑ | 53% | 30.07 "Hg | 10 mi |
| 10:53 am | | 66 °F | Sunny. | No wind | ↑ | 63% | 30.09 "Hg | 10 mi |
| 9:53 am | | 63 °F | Sunny. | No wind | ↑ | 68% | 30.09 "Hg | 10 mi |
| 8:53 am | | 57 °F | Sunny. | 3 mph | ↑ | 67% | 30.09 "Hg | 10 mi |
| Weather by CustomWeather, © 2026 | ||||||||