Downey, CA Weather by Month and Climate Averages

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.

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. The sun is out about 54% of daylight hours. 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. The sun is out about 62% of daylight hours. 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. The sun is out about 52% of daylight hours. 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. The sun is out about 58% of daylight hours. 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. The sun is out about 55% of daylight hours. 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. The sun is out about 63% of daylight hours. 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. The sun is out about 77% of daylight hours. 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. The sun is out about 77% of daylight hours. 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. The sun is out about 72% of daylight hours. 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. The sun is out about 70% of daylight hours. 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. The sun is out about 67% of daylight hours. 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. The sun is out about 51% of daylight hours. 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 sunshine about 77% of daylight hours. December is the cloudiest, at 51%. Over the year the sun shines about 63% of daylight hours. 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

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 on record brought 4.0 in of rain, 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.

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?

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 sunshine about 77% of daylight hours. 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.