 |
 Current Fullerton Weather Conditions |
Updated September 17th at 3:53 pm |
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| Temperature: | 82°F |
Dew Point: | 61°F |
| Barometer: | 29.83 inHg |
Wind: | N 19 Mph |
| Humidity: | 48.1% |
Visibility: | 0M |
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| Fullerton Weather Forecast Summary |
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Today
Sep 17th
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Thursday
Sep 18th
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Friday
Sep 19th
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Saturday
Sep 20th
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Sunday
Sep 21st
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Cloudy |
Thundershowers |
Mostly Sunny |
Sunny |
Mostly Sunny |
84°F
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84°F
72°F |
86°F
72°F |
88°F
72°F |
91°F
74°F |
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| Fullerton Detailed Weather Forecast |
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| Wednesday, September 17th, 2025 |
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Afternoon |
Temperature: 80°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 74°F |
| Cloudy with a chance of showers. Windy at times. |
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| Thursday, September 18th, 2025 |
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Overnight |
Temperature: 73°F |
| Cloudy with showers likely. |
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Morning |
Temperature: 81°F |
| Sunny with cloudy periods with showers likely. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 80°F |
| A mix of cloud and sun with showers likely. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 74°F |
| Clear with cloudy periods with showers likely. Slight chance of a thunderstorm. |
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| Friday, September 19th, 2025 |
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Overnight |
Temperature: 72°F |
| Clear with cloudy periods with a chance of showers. |
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Morning |
Temperature: 82°F |
| Sunny with cloudy periods. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 82°F |
| Sunny. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 74°F |
| Clear. |
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| Saturday, September 20th, 2025 |
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Overnight |
Temperature: 72°F |
| Clear. |
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Morning |
Temperature: 84°F |
| Sunny. |
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Afternoon |
Temperature: 83°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 76°F |
| Clear. |
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| Sunday, September 21st, 2025 |
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Overnight |
Temperature: 75°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 87°F |
| Sunny. |
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Afternoon |
Temperature: 87°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 80°F |
| Clear. |
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| Monday, September 22nd, 2025 |
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Overnight |
Temperature: 79°F |
| Clear. |
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Morning |
Temperature: 94°F |
| Sunny. |
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Afternoon |
Temperature: 93°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 84°F |
| Clear. |
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| Tuesday, September 23rd, 2025 |
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Overnight |
Temperature: 80°F |
| Mostly clear. |
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Morning |
Temperature: 91°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 88°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 79°F |
| Clear. |
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| Wednesday, September 24th, 2025 |
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Overnight |
Temperature: 76°F |
| Clear. |
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Morning |
Temperature: 86°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 82°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 76°F |
| Clear. |
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| Thursday, September 25th, 2025 |
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Overnight |
Temperature: 73°F |
| Clear. |
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Morning |
Temperature: 85°F |
| Sunny. |
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Afternoon |
Temperature: 83°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 75°F |
| Clear. |
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