Monthly weather forecast and climate
Downey, CA

Weather in January

January, like December, in Downey, California, is another enjoyable winter month, with average temperature ranging between min 51.4°F (10.8°C) and max 66.6°F (19.2°C). In Downey, the average high-temperature in January is relatively the same as in December - a still enjoyable 66.6°F (19.2°C). Weather in January »

Weather in February

February, the last month of the winter, in Downey, is another comfortable month, with average temperature ranging between min 50.5°F (10.3°C) and max 65.8°F (18.8°C). In Downey, the average high-temperature is almost the same as in January - a still enjoyable 65.8°F (18.8°C). Weather in February »

Weather in March

March, the first month of the spring, in Downey, is a pleasant month, with average temperature fluctuating between 68.5°F (20.3°C) and 52.3°F (11.3°C). In March, the average high-temperature is practically the same as in February - a pleasant 68.5°F (20.3°C). Weather in March »

Weather in April

April, the same as March, in Downey, California, is an agreeable spring month, with average temperature varying between 54.1°F (12.3°C) and 71.2°F (21.8°C). In April, the average high-temperature is practically the same as in March - a still pleasant 71.2°F (21.8°C). Weather in April »

Weather in May

May, the last month of the spring, in Downey, is another pleasant month, with average temperature varying between 56.8°F (13.8°C) and 73.2°F (22.9°C). In Downey, the average high-temperature is almost the same as in April - a still agreeable 73.2°F (22.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Downey, California, with temperature in the range of an average high of 77°F (25°C) and an average low of 59.5°F (15.3°C). In June, the average high-temperature is practically the same as in May - a warm 77°F (25°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Downey, California, with average temperature varying between 82°F (27.8°C) and 64°F (17.8°C). In July, the average high-temperature is essentially the same as in June - a still moderately hot 82°F (27.8°C). Weather in July »

Weather in August

August, the last month of the summer, in Downey, is another warm month, with average temperature fluctuating between 84°F (28.9°C) and 65.8°F (18.8°C). August is the warmest month, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 65.8°F (18.8°C). The average heat index in August is evaluated at a tropical 87.3°F (30.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Downey, California, with average temperature varying between 82.6°F (28.1°C) and 64.9°F (18.3°C). In Downey, the average high-temperature in September is essentially the same as in August - a still moderately hot 82.6°F (28.1°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Downey, California, with average temperature ranging between min 61.7°F (16.5°C) and max 77.9°F (25.5°C). In October, the average high-temperature is almost the same as in September - a still warm 77.9°F (25.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Downey, California, with average temperature fluctuating between 56.1°F (13.4°C) and 71.4°F (21.9°C). In Downey, the average high-temperature marginally drops, from a warm 77.9°F (25.5°C) in October, to an agreeable 71.4°F (21.9°C). Weather in November »

Weather in December

The first month of the winter, December, is still a comfortable month in Downey, California, with average temperature varying between 50.9°F (10.5°C) and 64.9°F (18.3°C). The coldest month is December, with an average high-temperature of 64.9°F (18.3°C) and an average low-temperature of 50.9°F (10.5°C). Weather in December »
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FAQ

How much does it rain in Downey?

In Downey, during the entire year, the rain falls for 46 days and collects up to 6.77" (172mm) of precipitation.

What is the month with the least sunshine in Downey?

Months with the least sunshine in Downey are January, February and December, with an average of 6.8h of sunshine.

When is the lowest UV index in Downey?

Months with the lowest UV index are February, November and December, with an average maximum UV index of 4.

What is the most humid month in Downey?

With an average relative humidity of 65%, June is the most humid month in Downey.

What is the driest month in Downey?

The month with the least rainfall in Downey is June when the rain falls for 1.3 days and typically collects 0.04" (1mm) of precipitation.

When are the longest days in Downey?

June has the longest days of the year in Downey, with an average of 14.4h of daylight.

What are the months with the highest UV index in Downey?

June through September, with an average maximum UV index of 6, are months with the highest UV index in Downey.

What are the months with the most sunshine in Downey?

Months with the most sunshine are July and August, with an average of 12h of sunshine.

What is the warmest month in Downey?

With an average high-temperature of 84°F (28.9°C) and an average low-temperature of 65.8°F (18.8°C), August is the warmest month in Downey, California.

What is the least humid month in Downey?

With an average relative humidity of 51%, November is the least humid month in Downey, California.

What is the coldest month in Downey?

December is the coldest month in Downey, California, with an average high-temperature of 64.9°F (18.3°C) and an average low-temperature of 50.9°F (10.5°C).

What is the wettest month in Downey?

The month with the most rainfall is December when the rain falls for 5.8 days and typically aggregates up to 1.42" (36mm) of precipitation.

What is the month with the shortest days in Downey?

The month with the shortest days in Downey, California, is December, with an average of 9.9h of daylight.

Average temperature
Downey, CA

Average temperature - Downey, CA

The warmest month (with the highest average high temperature) is August (84°F).
The month with the lowest average high temperature is December (64.9°F).

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).

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Average pressure
Downey, CA

Average pressure - Downey, CA

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.89").

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Average wind speed
Downey, CA

Average wind speed - Downey, CA

The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).

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Average rainfall
Downey, CA

Average rainfall - Downey, CA

The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days
Downey, CA

Average rainfall days - Downey, CA

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is June (1.3 days).

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Average daylight / Average sunshine
Downey, CA

Average daylight / Average sunshine - Downey, CA

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

Months with the most sunshine are July and August (Average sunshine: 12h).
Months with the least sunshine are January, February and December (Average sunshine: 6.8).

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Average sunshine days
Downey, CA

Average sunshine days - Downey, CA

The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (22.2 days).

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Average UV index
Downey, CA

Average UV index - Downey, CA

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are February, November and December (UV index 4).

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Average visibility
Downey, CA

Average visibility - Downey, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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