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 Fullerton Weather Forecast Summary |
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Today
Sep 15th
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Tuesday
Sep 16th
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Wednesday
Sep 17th
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Thursday
Sep 18th
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Friday
Sep 19th
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Cloudy |
Showers |
Cloudy |
Sunny |
Cloudy |
66°F
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64°F
48°F |
56°F
35°F |
63°F
34°F |
70°F
39°F |
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| Fullerton Detailed Weather Forecast |
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| Monday, September 15th, 2025 |
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Overnight |
Temperature: 42°F |
| Clear. |
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Morning |
Temperature: 63°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 60°F |
| Mostly sunny. Windy at times. |
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Evening |
Temperature: 56°F |
| Cloudy. Windy at times. |
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| Tuesday, September 16th, 2025 |
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Overnight |
Temperature: 59°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 60°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 59°F |
| Cloudy with showers likely. Windy at times. |
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Evening |
Temperature: 50°F |
| Cloudy with showers likely. |
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| Wednesday, September 17th, 2025 |
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Overnight |
Temperature: 45°F |
| Cloudy with a chance of showers. |
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Morning |
Temperature: 53°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 51°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 36°F |
| Clear. |
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| Thursday, September 18th, 2025 |
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Overnight |
Temperature: 37°F |
| Clear. |
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Morning |
Temperature: 60°F |
| Sunny. |
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Afternoon |
Temperature: 56°F |
| Sunny. |
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Evening |
Temperature: 40°F |
| Clear. |
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| Friday, September 19th, 2025 |
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Overnight |
Temperature: 42°F |
| Clear. |
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Morning |
Temperature: 66°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 63°F |
| Cloudy with a chance of showers. Windy at times. |
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Evening |
Temperature: 51°F |
| Cloudy with clear periods with a chance of showers. |
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| Saturday, September 20th, 2025 |
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Overnight |
Temperature: 46°F |
| Clear with cloudy periods with a chance of showers. |
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Morning |
Temperature: 52°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 49°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 37°F |
| Clear. |
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| Sunday, September 21st, 2025 |
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Overnight |
Temperature: 40°F |
| Clear. |
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Morning |
Temperature: 54°F |
| Sunny. Windy. |
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Afternoon |
Temperature: 51°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 35°F |
| Clear. |
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| Monday, September 22nd, 2025 |
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Overnight |
Temperature: 37°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 55°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 55°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 41°F |
| Clear with cloudy periods. |
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| Tuesday, September 23rd, 2025 |
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Overnight |
Temperature: 38°F |
| Cloudy. |
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Morning |
Temperature: 46°F |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 47°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 34°F |
| Clear with cloudy periods. |
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