Fullerton, CA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Fullerton now
Loading the National Weather Service forecast…
Fullerton weather by the hour
Fullerton weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Fullerton.
This week in Fullerton
Sunrise, sunset and moon in Fullerton
What is the weather usually like in Fullerton?
Köppen climate classification, calculated from the 1991–2020 normals
- Augustwarmest month · 87°F average high
- Decembercoldest month · 45°F average low
- 11.9 inprecipitation per year · 301 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Fullerton: April to June and October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station FULLERTON MUNI AP, CA US (USW00003166), adjusted for the elevation of Fullerton.
Fullerton weather month by month
Sunrise and sunset in Fullerton through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 6:55 AM | 5:07 PM | 10 h 12 min |
| February | 6:34 AM | 5:37 PM | 11 h 2 min |
| March | 7:00 AM | 7:00 PM | 12 h 0 min |
| April | 6:19 AM | 7:24 PM | 13 h 5 min |
| May | 5:48 AM | 7:47 PM | 13 h 58 min |
| June | 5:38 AM | 8:05 PM | 14 h 26 min |
| July | 5:50 AM | 8:04 PM | 14 h 13 min |
| August | 6:12 AM | 7:39 PM | 13 h 27 min |
| September | 6:34 AM | 6:59 PM | 12 h 25 min |
| October | 6:55 AM | 6:19 PM | 11 h 23 min |
| November | 6:22 AM | 4:49 PM | 10 h 26 min |
| December | 6:48 AM | 4:45 PM | 9 h 57 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in Fullerton?
Fullerton has a hot semi-arid climate. The warmest month is August, with an average high of 87°F (30°C), and the coldest is December, with average lows of 45°F (7°C).
It gets about 11.9 inches (301 mm) of precipitation a year. The wettest month is February and the driest is July.
The best time to visit Fullerton is April to June and October. At 164 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Fullerton
Weather in towns near Fullerton
Questions about the weather in Fullerton
What is the hottest month in Fullerton?
August, with an average high of 87°F (30°C).
What is the coldest month in Fullerton?
December, with an average low of 45°F (7°C).
How much does it rain in Fullerton?
About 11.9 inches (301 mm) a year; the wettest month is February.
Does it snow in Fullerton?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Fullerton?
April to June and October, when temperatures are most pleasant and rainy days are fewer.
What climate does Fullerton have?
Hot semi-arid (Köppen BSh).
What is the weather like in Fullerton in November?
Highs average 74°F and lows 51°F, with about 0.7 inches of precipitation.
What time is sunrise in Fullerton?
Around 6:22 AM in mid-November, and sunset around 4:49 PM. Today’s exact times are shown above.
Where does this Fullerton weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Fullerton.
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