+33.8703° · -117.9253° · ELEV 0m
Fullerton
United States · California
Monthly weather averages for Fullerton, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
August → JanuaryClimate Overview
Fullerton has a Mediterranean climate. The warmest month is August (31°C average high) and the coolest is December (19°C).
№ 02
347 mm / yearRainfall by Month
Fullerton sees 347 mm of rain a year. The wettest month is December (82 mm); the driest is July (2 mm).
№ 03
June–NovemberBest Time to Visit
June–November
12°C – 31°C · 11.6h sun
The best time to visit Fullerton is June–November, when temperatures average 12°C–31°C with 11.6 sunshine hours per day.
Some visitors prefer December–May for cooler, drier conditions.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | 19.5°C | 8.6°C | 79 mm | 8.4 h | 06:56 | 17:05 |
|---|---|---|---|---|---|---|
| February | 20.5°C | 8.8°C | 44 mm | 9.4 h | 06:36 | 17:35 |
| March | 20.9°C | 10.1°C | 64 mm | 10.3 h | 07:02 | 18:59 |
| April | 23.8°C | 12.0°C | 15 mm | 11.3 h | 06:20 | 19:22 |
| May | 23.8°C | 13.5°C | 9 mm | 12.0 h | 05:50 | 19:45 |
| June | 27.3°C | 15.7°C | 3 mm | 13.0 h | 05:40 | 20:04 |
| July | 30.0°C | 18.0°C | 2 mm | 13.3 h | 05:51 | 20:03 |
| August | 30.9°C | 18.6°C | 7 mm | 12.3 h | 06:13 | 19:39 |
| September | 30.2°C | 18.2°C | 11 mm | 11.3 h | 06:35 | 18:59 |
| October | 27.7°C | 15.6°C | 9 mm | 10.3 h | 06:56 | 18:18 |
| November | 23.8°C | 11.5°C | 22 mm | 9.4 h | 06:24 | 16:48 |
| December | 19.1°C | 8.8°C | 82 mm | 8.1 h | 06:49 | 16:44 |