Pomona Weather & Climate: Best Time to Visit

The climate in Pomona experiences moderate temperature changes, with mild shifts between seasons. On average, daytime temperatures range from a comfortable 30°C (86°F) in January to a pleasant 21°C (70°F) in July.

Nighttime temperatures range from 21°C (70°F) in January to 10°C (50°F) in July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Pomona receives mid-range precipitation levels, with 964 mm (38 in) annually. The seasons in Pomona bring significant changes in precipitation. The wettest month, February, receives high rainfall, with an average of 160 mm (6.3 in) of precipitation. This rainfall is distributed across 14 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 32 mm (1.3 in) over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Pomona Precipitation page.

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

The average number of days each month with precipitation

Pomona enjoys sunny spells year-round. October sees up to 8.5 hours of daily sunshine, perfect for a sunny trip. June, the least sunny month, still offers a generous 6.3 hours of sun despite this cloudier time of the year.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Pomona.

The city experiences its highest humidity in February, reaching 71%. In July, the humidity drops to its lowest level at 59%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year