Monthly weather forecast and climate
Fullerton, CA

A scenic view of the trees and neat lawns of the famous Muckenthaler Community Center in Fullerton, California
A scenic view of the trees and neat lawns of the famous Muckenthaler Community Center in Fullerton, California

How much does it rain in Fullerton?

Throughout the year, in Fullerton, 13.9" (352.8mm) of rain is accumulated.

What is the rainiest month in Fullerton?

The month with the most rainfall in Fullerton, California, is February when 3.3" (82.6mm) of precipitation is typically aggregated.

What is the driest month in Fullerton?

The month with the least rainfall in Fullerton, California, is July when 0" (1mm) of precipitation is typically aggregated.

What is the warmest month in Fullerton?

With an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 65.3°F (18.5°C), August is the warmest month in Fullerton.

What is the coldest month in Fullerton?

With an average high-temperature of 67.5°F (19.7°C) and an average low-temperature of 44.8°F (7.1°C), December is the coldest month in Fullerton.
Average temperature - Fullerton, CA
Average rainfall - Fullerton, CA
Average daylight - Fullerton, CA

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

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