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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is another comfortable winter month in Downey, California, with an average temperature fluctuating between 51.4°F (10.8°C) and 66.6°F (19.2°C). January's weather displays an average high-temperature of a still enjoyable 66.6°F (19.2°C), slightly varied from December's 64.9°F (18.3°C). Weather in January »
Weather in February
February, the last month of the winter in Downey, is another comfortable month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 50.5°F (10.3°C). The average high-temperature during February is a still comfortable 65.8°F (18.8°C), almost matching the conditions of the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Downey, is a pleasant month, with temperature in the range of an average low of 52.3°F (11.3°C) and an average high of 68.5°F (20.3°C). The average high-temperature for March is a pleasant 68.5°F (20.3°C), closely aligning with the temperature of the preceding month. Weather in March »
Weather in April
April, the same as March, in Downey, California, is another pleasant spring month, with an average temperature varying between 54.1°F (12.3°C) and 71.2°F (21.8°C). April's arrival brings an average high-temperature of a still agreeable 71.2°F (21.8°C), slightly deviating from March's 68.5°F (20.3°C). Weather in April »
Weather in May
The last month of the spring, May, is another pleasant month in Downey, California, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 73.2°F (22.9°C). Entering May, Downey's average high-temperature reads a still pleasant 73.2°F (22.9°C), indicating a close resemblance to the previous month's climate. Weather in May »
Weather in June
June, the first month of the summer in Downey, is a warm month, with an average temperature ranging between min 59.5°F (15.3°C) and max 77°F (25°C). The transition into June reveals an average high-temperature of a warm 77°F (25°C), mirroring a close resemblance to May. Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Downey, California, with an average temperature fluctuating between 64°F (17.8°C) and 82°F (27.8°C). Downey's weather in July indicates an average high-temperature of a still warm 82°F (27.8°C), nearly consistent with the 77°F (25°C) of June. Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Downey, California, with an average temperature ranging between max 84°F (28.9°C) and min 65.8°F (18.8°C). Downey's August weather, with an average high temperature of 84°F (28.9°C) and an average low temperature of 65.8°F (18.8°C), tends to be the warmest of the year. August's mean heat index is computed to be a tropical 87.8°F (31°C). Weather in August »
Weather in September
September, the first month of the autumn in Downey, is still a warm month, with an average temperature fluctuating between 64.9°F (18.3°C) and 82.6°F (28.1°C). The transition into September reveals an average high-temperature of a still moderately hot 82.6°F (28.1°C), mirroring a close resemblance to August. Weather in September »
Weather in October
October, the same as September, is another warm autumn month in Downey, California, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 77.9°F (25.5°C). The transition into October shows a subtle variation to a still moderately hot 77.9°F (25.5°C) from September's 82.6°F (28.1°C) in the average high-temperature. Weather in October »
Weather in November
The last month of the autumn, November, is also an agreeable month in Downey, California, with temperature in the range of an average high of 71.4°F (21.9°C) and an average low of 56.1°F (13.4°C). November implies a soft temperature shift, with average high-temperatures reducing from October's moderately hot 77.9°F (25.5°C) to a pleasant 71.4°F (21.9°C). Weather in November »
Weather in December
December, the first month of the winter in Downey, is also an enjoyable month, with an average temperature fluctuating between 50.9°F (10.5°C) and 64.9°F (18.3°C). December is the month when Downey experiences its coldest temperatures, averaging a high of 64.9°F (18.3°C) and a low of 50.9°F (10.5°C). Weather in December »
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How many days does it rain?
Throughout the year, there are 46 rainfall days, and 6.77" (172mm) of precipitation is accumulated.
What are the months with the least sunshine?
January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.
When is the lowest UV index?
February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Downey, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What is the most humid month?
The most humid month is June, with an average relative humidity of 65%.
What is the driest month?
The month with the least rainfall is June, when the rain falls for 1.3 days and typically collects 0.04" (1mm) of precipitation.
When are the longest days?
The month with the longest days is June, with an average of 14h and 24min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June through September, with an average maximum UV index of 6.
What is the month with the most sunshine?
July and August, with an average of 12h of sunshine, are months with the most sunshine.
What month is the hottest?
August is the warmest month of the year, registering average temperatures as high as 84°F (28.9°C) and as low as 65.8°F (18.8°C).
What is the least humid month?
With an average relative humidity of 51%, November is the least humid month in Downey.
What are the coldest months?
In Downey, the average lowest temperatures are observed in December, with a high of 64.9°F (18.3°C) and a low of 50.9°F (10.5°C).
What is the rainiest month?
December is the month with the most rainfall. Rain falls for 5.8 days and accumulates 1.42" (36mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 54min of daylight, December has the shortest days of the year.
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).
Average pressure
Downey, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.95"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed
Downey, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.4mph - Average wind speed in April:
6.1mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.8mph - Average wind speed in September:
4.7mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5mph - Average wind speed in December:
5.2mph
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).
Average humidity
Downey, CA
The month with the highest relative humidity is June (65%).
The month with the lowest relative humidity is November (51%).
Average rainfall
Downey, CA
- Average rainfall in January:
1.22" - Average rainfall in February:
1.3" - Average rainfall in March:
0.94" - Average rainfall in April:
0.43" - Average rainfall in May:
0.16" - Average rainfall in June:
0.04"
The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Downey, CA
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
6.8 days - Average rainfall days in April:
4.7 days - Average rainfall days in May:
3 days - Average rainfall days in June:
1.3 days
- Average rainfall days in July:
3.2 days - Average rainfall days in August:
1.8 days - Average rainfall days in September:
2.8 days - Average rainfall days in October:
2.8 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
5.8 days
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).
Average daylight / Average sunshine
Downey, CA
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
6h and 5min - Average sunshine in February:
6h and 5min - Average sunshine in March:
8h and 5min - Average sunshine in April:
10h and 5min - Average sunshine in May:
11h and 2min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 4min - Average sunshine in October:
8h and 3min - Average sunshine in November:
7h and 1min - Average sunshine in December:
6h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days
Downey, CA
- Average sunshine days in January:
25.5 days - Average sunshine days in February:
22.2 days - Average sunshine days in March:
24.1 days - Average sunshine days in April:
24.2 days - Average sunshine days in May:
25.5 days - Average sunshine days in June:
25.2 days
- Average sunshine days in July:
25.8 days - Average sunshine days in August:
26.3 days - Average sunshine days in September:
24.2 days - Average sunshine days in October:
26 days - Average sunshine days in November:
24.7 days - Average sunshine days in December:
23.8 days
The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (22.2 days).
Average UV index
Downey, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 4).
Average cloud cover
Downey, CA
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility
Downey, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Downey, California, USA
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