Campbell (CA) Weather & Climate: Best Time to Visit

Visitors to Campbell can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a moderate 15°C (59°F).

At night, temperatures range from around 14°C (57°F) in July to 4°C (39°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Campbell's climate is marked by below-average rainfall, accumulating 344 mm (14 in) of precipitation yearly. Campbell can be quite wet during December, receiving approximately 73 mm (2.9 in) of precipitation over 11 rainy days.

In contrast, during the driest month (August), you will experience much drier conditions, with 0 mm (0 in) of precipitation spread across 0 rainy days days. For more details, please visit our Campbell Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Campbell can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 10.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.3 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Campbell.

The city experiences its highest humidity in January, reaching 80%. In June, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year