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Downey, CA Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Downey, CA?
Downey, CA gets 12.0 in of precipitation a year over about 35 rainy days. August is the warmest month (average high 84°F) and January the coldest (average low 47°F).
Semi-arid climate
Downey, CA has warm summers and mild winters. Daytime highs range from about 67°F in February to 84°F in August. February is usually the wettest month. The most comfortable time to visit is typically January, March to June, and October to December, when daytime highs sit near 72°F.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 47° | 67° |
| Spring | Mar–May | 54° | 72° |
| Summer | Jun–Aug | 64° | 81° |
| Autumn | Sep–Nov | 58° | 78° |
How much rain does Downey get?
Downey gets 12.0 in of precipitation in an average year, spread over about 35 days with measurable rain. That is fewer rainy days than 90% of the US.
February is the wettest month, with 3.0 in. August is the driest, with 0.0 in. February has the most rainy days, about 7.
The longest dry spell in the last five years lasted 180 days, to November 1, 2024.
From September 2025 to August 2026 Downey got 13.6 in of rain, against a normal of 12.0 in for those months. November 2025 had the most, with 3.7 in.
See where Downey ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in California.
Downey weather by month
Downey weather in January
In January, Downey averages a high of 68°F and a low of 47°F. It gets 2.9 in of precipitation over about 6 rainy days. Estimated sunshine is 54% of daylight hours, derived from ERA5 cloud cover. The January record high is 93°F (2003) and the record low is 30°F (1987). January is one of the most comfortable months to visit.
Downey weather in February
In February, Downey averages a high of 67°F and a low of 48°F. It gets 3.0 in of precipitation over about 7 rainy days. Estimated sunshine is 62% of daylight hours, derived from ERA5 cloud cover. The February record high is 92°F (2016) and the record low is 34°F (1990).
Downey weather in March
In March, Downey averages a high of 69°F and a low of 51°F. It gets 1.6 in of precipitation over about 6 rainy days. Estimated sunshine is 52% of daylight hours, derived from ERA5 cloud cover. The March record high is 99°F (2026) and the record low is 35°F (1971). March is one of the most comfortable months to visit.
Downey weather in April
In April, Downey averages a high of 72°F and a low of 54°F. It gets 0.6 in of precipitation over about 3 rainy days. Estimated sunshine is 58% of daylight hours, derived from ERA5 cloud cover. The April record high is 105°F (1989) and the record low is 38°F (1975). April is one of the most comfortable months to visit.
Downey weather in May
In May, Downey averages a high of 74°F and a low of 58°F. It gets 0.3 in of precipitation over about 2 rainy days. Estimated sunshine is 55% of daylight hours, derived from ERA5 cloud cover. The May record high is 104°F (2004) and the record low is 47°F (1971). May is one of the most comfortable months to visit.
Downey weather in June
In June, Downey averages a high of 77°F and a low of 61°F. It gets 0.1 in of precipitation over about 1 rainy days. Estimated sunshine is 63% of daylight hours, derived from ERA5 cloud cover. The June record high is 109°F (1981) and the record low is 50°F (1971). June is one of the most comfortable months to visit.
Downey weather in July
In July, Downey averages a high of 82°F and a low of 65°F. It gets 0.1 in of precipitation over about 1 rainy days. Estimated sunshine is 77% of daylight hours, derived from ERA5 cloud cover. The July record high is 109°F (2018) and the record low is 56°F (2012).
Downey weather in August
In August, Downey averages a high of 84°F and a low of 66°F. It gets 0.0 in of precipitation over about 0 rainy days. Estimated sunshine is 77% of daylight hours, derived from ERA5 cloud cover. The August record high is 103°F (1983) and the record low is 55°F (1978).
Downey weather in September
In September, Downey averages a high of 83°F and a low of 64°F. It gets 0.1 in of precipitation over about 1 rainy days. Estimated sunshine is 72% of daylight hours, derived from ERA5 cloud cover. The September record high is 111°F (2010) and the record low is 51°F (1978).
Downey weather in October
In October, Downey averages a high of 78°F and a low of 59°F. It gets 0.5 in of precipitation over about 2 rainy days. Estimated sunshine is 70% of daylight hours, derived from ERA5 cloud cover. The October record high is 109°F (1991) and the record low is 39°F (1972). October is one of the most comfortable months to visit.
Downey weather in November
In November, Downey averages a high of 73°F and a low of 52°F. It gets 0.8 in of precipitation over about 3 rainy days. Estimated sunshine is 67% of daylight hours, derived from ERA5 cloud cover. The November record high is 100°F (2010) and the record low is 35°F (1994). November is one of the most comfortable months to visit.
Downey weather in December
In December, Downey averages a high of 67°F and a low of 47°F. It gets 2.1 in of precipitation over about 5 rainy days. Estimated sunshine is 51% of daylight hours, derived from ERA5 cloud cover. The December record high is 89°F (1979) and the record low is 28°F (1990). December is one of the most comfortable months to visit.
Sunshine, humidity and wind in Downey
July is the sunniest month in Downey, with estimated sunshine of 77% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 51%. The annual cloud-cover estimate is 63% of daylight hours; it is not a measurement of sunshine duration. Downey is sunnier than 90% of the US.
Humidity peaks in May at 63% and is lowest in November at 43%.
Wind averages 5 mph over the year, and April is the windiest month at 6 mph.
Downey has about 24 days a year above 90°F. Downey is cooler than 56% of the US.
Thunderstorms occur on about 4 days a year.
See where Downey ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
Downey weather records
These records cover LONG BEACH DAUGHERTY AP during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Downey station is 111°F, on September 27, 2010. The coldest is 28°F, on December 22, 1990.
The wettest day in the available station history brought 4.0 in of precipitation, on January 22, 2017.
32 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.3°F per decade since 1970.
The best time to visit Downey
The most comfortable time to visit is typically January, March to June, and October to December, when daytime highs sit near 72°F.
Winter (December–February) is mild, with average highs around 67°F and lows near 47°F.
Spring (March–May) is warm, with average highs around 72°F and lows near 54°F.
Summer (June–August) is warm, with average highs around 81°F and lows near 64°F.
Autumn (September–November) is warm, with average highs around 78°F and lows near 58°F.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Wind | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|---|
| January | 47° | 68° | 2.9 in | 6 | 4 mph | 58% | 54% | 93° | 30° |
| February | 48° | 67° | 3.0 in | 7 | 5 mph | 47% | 62% | 92° | 34° |
| March | 51° | 69° | 1.6 in | 6 | 6 mph | 59% | 52% | 99° | 35° |
| April | 54° | 72° | 0.56 in | 3 | 6 mph | 59% | 58% | 105° | 38° |
| May | 58° | 74° | 0.26 in | 2 | 6 mph | 63% | 55% | 104° | 47° |
| June | 61° | 77° | 0.07 in | 1 | 6 mph | 60% | 63% | 109° | 50° |
| July | 65° | 82° | 0.05 in | 1 | 6 mph | 58% | 77% | 109° | 56° |
| August | 66° | 84° | 0.01 in | 0 | 6 mph | 57% | 77% | 103° | 55° |
| September | 64° | 83° | 0.08 in | 1 | 5 mph | 57% | 72% | 111° | 51° |
| October | 59° | 78° | 0.53 in | 2 | 5 mph | 52% | 70% | 109° | 39° |
| November | 52° | 73° | 0.75 in | 3 | 4 mph | 43% | 67% | 100° | 35° |
| December | 47° | 67° | 2.1 in | 5 | 4 mph | 54% | 51% | 89° | 28° |
Station: LONG BEACH DAUGHERTY AP, 14 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Downey climate questions
How much rain does Downey get?
Downey gets 12.0 in of precipitation in an average year, over about 35 rainy days.
What is the wettest month in Downey?
February is the wettest month in Downey, with 3.0 in. August is the driest, with 0.0 in.
How many rainy days does Downey have a year?
Downey has about 35 days with measurable rain in an average year. February has the most, about 7.
What is the hottest month in Downey?
August is the warmest month in Downey, with an average high of 84°F.
What is the coldest month in Downey?
January is the coldest month in Downey, with an average low of 47°F.
What is the record high temperature in Downey?
Within the available 1970–2026 station history, the record high at the Downey station is 111°F, set on September 27, 2010. The record low is 28°F, on December 22, 1990.
What is the sunniest month in Downey?
July is the sunniest month in Downey, with estimated sunshine of 77% of daylight hours from ERA5 cloud cover. December is the cloudiest.
What is the best time to visit Downey?
The most comfortable time to visit is typically January, March to June, and October to December, when daytime highs sit near 72°F.