 |
 Current Fullerton Weather Conditions |
Updated January 11th at 10:53 pm |
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| Temperature: | 55°F |
Dew Point: | 30°F |
| Barometer: | 30.18 inHg |
Wind: | N 6 Mph |
| Humidity: | 37.9% |
Visibility: | 0M |
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| Fullerton Weather Forecast Summary |
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Today
Jan 12th
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Tuesday
Jan 13th
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Wednesday
Jan 14th
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Thursday
Jan 15th
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Friday
Jan 16th
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Mix of Cloud and Sun |
Sunny |
Sunny |
Cloudy |
Sunny |
72°F
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75°F
55°F |
79°F
59°F |
78°F
61°F |
78°F
59°F |
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| Fullerton Detailed Weather Forecast |
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| Monday, January 12th, 2026 |
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Overnight |
Temperature: 54°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 68°F |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 67°F |
| Sunny. |
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Evening |
Temperature: 59°F |
| Clear. |
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| Tuesday, January 13th, 2026 |
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Overnight |
Temperature: 56°F |
| Clear. |
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Morning |
Temperature: 71°F |
| Sunny. |
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Afternoon |
Temperature: 70°F |
| Sunny. |
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Evening |
Temperature: 62°F |
| Clear. |
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| Wednesday, January 14th, 2026 |
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Overnight |
Temperature: 60°F |
| Clear. |
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Morning |
Temperature: 74°F |
| Sunny. |
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Afternoon |
Temperature: 74°F |
| Sunny. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Thursday, January 15th, 2026 |
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Overnight |
Temperature: 61°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 74°F |
| Cloudy. |
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Afternoon |
Temperature: 73°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 64°F |
| A mix of clear and cloudy skies. |
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| Friday, January 16th, 2026 |
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Overnight |
Temperature: 60°F |
| Clear. |
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Morning |
Temperature: 73°F |
| Sunny. |
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Afternoon |
Temperature: 73°F |
| Sunny. |
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Evening |
Temperature: 63°F |
| Clear. |
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| Saturday, January 17th, 2026 |
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Overnight |
Temperature: 59°F |
| Clear. |
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Morning |
Temperature: 74°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 73°F |
| Sunny. |
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Evening |
Temperature: 64°F |
| A mix of cloudy and clear skies. |
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| Sunday, January 18th, 2026 |
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Overnight |
Temperature: 61°F |
| Cloudy. |
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Morning |
Temperature: 73°F |
| Cloudy. |
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Afternoon |
Temperature: 73°F |
| Sunny with cloudy periods. |
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Evening |
Temperature: 64°F |
| Mostly clear. |
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| Monday, January 19th, 2026 |
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Overnight |
Temperature: 61°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 73°F |
| Cloudy. |
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Afternoon |
Temperature: 72°F |
| Cloudy. |
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Evening |
Temperature: 66°F |
| Cloudy. |
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| Tuesday, January 20th, 2026 |
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Overnight |
Temperature: 63°F |
| Cloudy. |
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Morning |
Temperature: 71°F |
| Cloudy. |
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Afternoon |
Temperature: 70°F |
| Sunny. |
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Evening |
Temperature: 62°F |
| A mix of cloudy and clear skies. |
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