 |
 Current Fullerton Weather Conditions |
Updated December 13th at 12:53 am |
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| mist |
| Temperature: | 55°F |
Dew Point: | 55°F |
| Barometer: | 30.04 inHg |
Wind: | calm |
| Humidity: | 100.0% |
Visibility: | 0M |
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| Fullerton Weather Forecast Summary |
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Today
Dec 13th
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Sunday
Dec 14th
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Monday
Dec 15th
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Tuesday
Dec 16th
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Wednesday
Dec 17th
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Cloudy |
Cloudy |
Cloudy |
Cloudy |
Cloudy |
77°F
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77°F
64°F |
79°F
63°F |
78°F
64°F |
75°F
63°F |
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| Fullerton Detailed Weather Forecast |
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| Saturday, December 13th, 2025 |
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Overnight |
Temperature: 63°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 73°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 72°F |
| Cloudy. |
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Evening |
Temperature: 67°F |
| Cloudy. |
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| Sunday, December 14th, 2025 |
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Overnight |
Temperature: 65°F |
| Cloudy. |
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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: 66°F |
| Clear. |
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| Monday, December 15th, 2025 |
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Overnight |
Temperature: 63°F |
| Clear. |
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Morning |
Temperature: 75°F |
| Sunny. |
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Afternoon |
Temperature: 74°F |
| Cloudy. |
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Evening |
Temperature: 67°F |
| A mix of cloudy and clear skies. |
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| Tuesday, December 16th, 2025 |
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Overnight |
Temperature: 64°F |
| Cloudy. |
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Morning |
Temperature: 75°F |
| Sunny. |
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Afternoon |
Temperature: 73°F |
| Mostly sunny. |
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Evening |
Temperature: 67°F |
| Cloudy. |
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| Wednesday, December 17th, 2025 |
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Overnight |
Temperature: 63°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 72°F |
| Cloudy. |
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Afternoon |
Temperature: 71°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Thursday, December 18th, 2025 |
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Overnight |
Temperature: 62°F |
| Cloudy. |
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Morning |
Temperature: 70°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 70°F |
| Cloudy. |
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Evening |
Temperature: 64°F |
| A mix of cloudy and clear skies. |
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| Friday, December 19th, 2025 |
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Overnight |
Temperature: 60°F |
| Clear. |
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Morning |
Temperature: 68°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 66°F |
| Cloudy. |
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Evening |
Temperature: 60°F |
| A mix of cloudy and clear skies. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: 57°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 64°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 65°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 60°F |
| Cloudy. |
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| Sunday, December 21st, 2025 |
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Overnight |
Temperature: 58°F |
| Cloudy. |
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Morning |
Temperature: 65°F |
| Sunny. |
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Afternoon |
Temperature: 64°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 59°F |
| Cloudy. |
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