Fullerton, CA Weather


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The most pleasant months of the year for Fullerton are May, June and October. In Fullerton, there are 7 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Fullerton with an average high temperature of 86.7°, which ranks it as cooler than most places in California. Any measurable snowfall is a rare occurance in Fullerton. There are few days during the summer when the humidity becomes unpleasant.

Today's Weather - Fullerton, CA

12 AM PST

Patchy Drizzle

59°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TonightPatchy Drizzle57° / 69°S 5 mph
Tuesday NightMostly Cloudy52° / 69°SW 5 to 10 mph
Wednesday NightSlight Chance Rain Showers55° / 67°W 5 to 15 mph
Thursday NightPartly Cloudy then Slight Chance Rain Showers54° / 69°S 10 to 15 mph
Friday NightPartly Cloudy53° / 73°SW 0 to 15 mph
Saturday NightMostly Clear54° / 76°S 5 to 15 mph
Sunday NightMostly Clear55° / 80°S 5 to 15 mph

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 46
Rain: averages 14 inches of rain a year
Snow: averages 0 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Fullerton area is 9.6 (10=best), which means it is more comfortable than most places in California.

9.6 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January69° 46°
February70° 48°
March71° 50°
April74° 52°
May77° 57°
June80° 60°
July85° 64°
August87° 65°
September85° 63°
October80° 57°
November74° 51°
December69° 46°
Hot, Freezing, Rainy, Snowy Days: Fullerton
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January0060
February0060
March1050
April1030
May2010
June2010
July6000
August9000
September7010
October4020
November1030
December0050

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

Reviews for Fullerton
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Over 3 years ago

ive lived in this city for a very long time, and it is a great and quiet place to live, with some nice shopping areas and great  More

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David · 

I have been living and working in Fullerton for almost 20 years now and have seen it change through the years, both for the better and worse. Fullerton is a half  More

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Over 8 years ago

The weather here is gorgeous! Warm and rarely rains.  More

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