Downey (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Downey.
Climate overview of Downey
The climate in Downey, California, United States of America, sees a moderate range of temperatures across the year, from 30°C (86°F) in August down to 20°C (68°F) in December.
The city has a relatively dry climate, receiving around 254 mm (10 in) of rainfall per year. It does experience a distinct dry season from March to November. December is the wettest month and June the driest. Sunshine peaks in July, when the city sees around 12.1 hours of sunshine per day.
Downey Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Downey — and find the best time to visit.
Monthly Temperature in Downey
In Downey, seasonal changes bring about a moderate variation in temperatures. On average, daytime temperatures range from a comfortable 30°C (86°F) in August to a pleasant 20°C (68°F) in December.
Nighttime temperatures range from 18°C (64°F) in August to 8°C (46°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Downey
Downey typically sees modest rainfall throughout the year, with an average annual precipitation of 254 mm (10 in). The seasons in Downey bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 71 mm (2.8 in) of precipitation. This rainfall is distributed across 8 rainy days.
In contrast, the driest month, June, experiences much less rainfall, totaling 0.1 mm (0 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Downey Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Downey
In Downey, summer days are longer and more sunny, with daily sunshine hours peaking at 12.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 7.2 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Downey
The mean water temperature over the year ranges from 14°C (57°F) in January to 18°C (64°F) in August.
Water temperature over the year
Humidity in Downey by Month
The relative humidity is high throughout the year in Downey.
The city experiences its highest humidity in May, reaching 73%. In November, the humidity drops to its lowest level at 50%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Downey
The average wind speed over the year ranges from 3 m/s (6 knots) to 4 m/s (8 knots). It is lower in January, February, September, October, November and December and higher in March, April, May, June, July and August. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Downey
With rainfall ranging from 0 mm (0 in) to 71 mm (2.8 in), the drier months like June are particularly ideal for exploring. Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in Downey
What is the best time to visit Downey?
January, February, March, April, May, June, July, October, November and December typically offer the most optimal weather in Downey. In contrast, August and September tend to have less optimal conditions. Downey has a distinct dry season from March to November.
What temperatures can I expect in Downey?
Daytime highs range from 20°C (68°F) in December to 30°C (86°F) in August. Nighttime lows range from 8°C (46°F) to 18°C (64°F).
How much rain does Downey get?
Annual rainfall is around 254 mm (10 in). December is the wettest month with 71 mm (2.8 in), while June is the driest with 0.1 mm (0 in).
How sunny is Downey?
Downey receives around 3,257 hours of sunshine per year. July is the sunniest month with 364 hours, while November is the cloudiest with just 217 hours. Overall, Downey enjoys abundant sunshine.
Downey 3-Day Forecast
Downey (CA) 3-Day Forecast
Downey on the map
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