Climate and monthly weather forecastWillowbrook, CA
Climate and monthly weather forecast
Weather in January
January, like December, in Willowbrook, California, is another comfortable winter month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 52.2°F (11.2°C). As Willowbrook welcomes January, the average high-temperature stabilizes at a still enjoyable 65.8°F (18.8°C), showing little deviation from December's 64°F (17.8°C). Weather in January »Weather in February
February, the last month of the winter in Willowbrook, is another refreshing month, with an average temperature ranging between min 51.4°F (10.8°C) and max 64.9°F (18.3°C). Upon the onset of February, Willowbrook witnesses an average high-temperature of a still enjoyable 64.9°F (18.3°C), showing a close resemblance to the prior month. Weather in February »Weather in March
The first month of the spring, March, is still a refreshing month in Willowbrook, California, with an average temperature varying between 67.1°F (19.5°C) and 53.1°F (11.7°C). With March's arrival, Willowbrook's weather records an average high-temperature of a still enjoyable 67.1°F (19.5°C), marking little difference from February's 64.9°F (18.3°C). Weather in March »Weather in April
April in Willowbrook, California, is an agreeable spring month, with an average temperature ranging between max 69.4°F (20.8°C) and min 54.5°F (12.5°C). Willowbrook observes an average high-temperature of an agreeable 69.4°F (20.8°C) in April, barely different from 67.1°F (19.5°C) in March. Weather in April »Weather in May
The last month of the spring, May, is another pleasant month in Willowbrook, California, with temperature in the range of an average high of 71.4°F (21.9°C) and an average low of 56.7°F (13.7°C). The advent of May observes an average high-temperature of a still agreeable 71.4°F (21.9°C), nearly identical to April's 69.4°F (20.8°C). Weather in May »Weather in June
June, the first month of the summer in Willowbrook, is a warm month, with an average temperature ranging between min 59.4°F (15.2°C) and max 74.8°F (23.8°C). June's advent presents an average high-temperature of a moderately hot 74.8°F (23.8°C), indicating a slight variation from the conditions of the previous month. Weather in June »Weather in July
July, like June, in Willowbrook, California, is a moderately hot summer month, with an average temperature ranging between max 79.3°F (26.3°C) and min 63.9°F (17.7°C). Willowbrook's July showcases an average high-temperature of a still warm 79.3°F (26.3°C), hardly distinct from June's 74.8°F (23.8°C). Weather in July »Weather in August
August, the last month of the summer in Willowbrook, is another warm month, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 81.1°F (27.3°C). August, with its high-temperature average of 81.1°F (27.3°C) and a low-temperature average of 65.1°F (18.4°C), is the warmest month. The average heat index in August is estimated at 84.2°F (29°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Willowbrook, California, with an average temperature fluctuating between 80.2°F (26.8°C) and 64.8°F (18.2°C). At the start of September, Willowbrook's average high-temperature reaches a still warm 80.2°F (26.8°C), subtly different from the preceding month. Weather in September »Weather in October
October, like September, in Willowbrook, California, is another warm autumn month, with an average temperature ranging between max 76.1°F (24.5°C) and min 62.2°F (16.8°C). The arrival of October records an average high-temperature of a still warm 76.1°F (24.5°C), closely related to the 80.2°F (26.8°C) observed in September. Weather in October »Weather in November
The last month of the autumn, November, is also an agreeable month in Willowbrook, California, with an average temperature varying between 70.3°F (21.3°C) and 56.8°F (13.8°C). November signifies a gentle decline in Willowbrook's average high-temperature, easing from a warm 76.1°F (24.5°C) in October to a pleasant 70.3°F (21.3°C). Weather in November »Weather in December
The first month of the winter, December, is still a refreshing month in Willowbrook, California, with an average temperature varying between 51.6°F (10.9°C) and 64°F (17.8°C). The coldest period is December, when temperatures fluctuate between an average high of 64°F (17.8°C) and a low of 51.6°F (10.9°C). Weather in December »Updated: Feb 10, 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
The wettest months in Willowbrook are January and February, with an average 1.26" (32mm) of rainfall.
Throughout the year, in Willowbrook, there are 49.7 rainfall days, and 6.77" (172mm) of precipitation is accumulated.
The months with the lowest UV index in Willowbrook, California, are January, February, November and December, with an average maximum UV index of 4.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Willowbrook, California, 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.
The most humid month in Willowbrook, California, is June, with an average relative humidity of 69%.
June is the month with the least rainfall in Willowbrook, California. Rain falls for 1.3 days and accumulates 0.08" (2mm) of precipitation.
The month with the longest days is June, with an average of 14h and 24min of daylight.
June through September, with an average maximum UV index of 6, are months with the highest UV index.
July and August, with an average of 12h of sunshine, are months with the most sunshine.
August, recording an average high temperature of 81.1°F (27.3°C) and a low temperature of 65.1°F (18.4°C), is Willowbrook's warmest month.
With an average relative humidity of 53%, November is the least humid month.
December, characterized by an average high temperature of 64°F (17.8°C) and a low temperature of 51.6°F (10.9°C), is generally the coldest month.
With an average of 9h and 54min of daylight, December has the shortest days of the year in Willowbrook.
December has the least sunshine of the year in Willowbrook, California, with an average of 6.7h of sunshine.
Average temperature
Willowbrook, CA
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (64°F).
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (51.4°F).
Average pressure
Willowbrook, 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:
29.92"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
Willowbrook, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
5.4mph - Average wind speed in March:
5.7mph - Average wind speed in April:
6.3mph - Average wind speed in May:
6mph - Average wind speed in June:
5.4mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5mph - Average wind speed in September:
4.8mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.4mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are September and October (4.8mph).
Average humidity
Willowbrook, CA
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (53%).
Average rainfall
Willowbrook, CA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.26" - Average rainfall in March:
0.83" - Average rainfall in April:
0.43" - Average rainfall in May:
0.24" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.16" - Average rainfall in September:
0.2" - Average rainfall in October:
0.24" - Average rainfall in November:
0.63" - Average rainfall in December:
1.22"
The wettest months (with the highest rainfall) are January and February (1.26").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Willowbrook, CA
- Average rainfall days in January:
4.7 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
7 days - Average rainfall days in April:
5.1 days - Average rainfall days in May:
4.1 days - Average rainfall days in June:
1.3 days
- Average rainfall days in July:
3.1 days - Average rainfall days in August:
2.2 days - Average rainfall days in September:
2.8 days - Average rainfall days in October:
3.3 days - Average rainfall days in November:
4.3 days - Average rainfall days in December:
6 days
The month with the highest number of rainy days is March (7 days).
The month with the least rainy days is June (1.3 days).
Average daylight / Average sunshine
Willowbrook, CA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
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 48min - Average sunshine in February:
6h and 48min - Average sunshine in March:
8h and 48min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 36min - Average sunshine in October:
8h and 24min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 42min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
Willowbrook, CA
- Average sunshine days in January:
24.8 days - Average sunshine days in February:
21.1 days - Average sunshine days in March:
22.9 days - Average sunshine days in April:
23.4 days - Average sunshine days in May:
23.4 days - Average sunshine days in June:
21.3 days
- Average sunshine days in July:
24.9 days - Average sunshine days in August:
25.3 days - Average sunshine days in September:
23.2 days - Average sunshine days in October:
25.2 days - Average sunshine days in November:
23.9 days - Average sunshine days in December:
23.4 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is February (21.1 days).
Average UV index
Willowbrook, 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 January, February, November and December (UV index 4).
Average cloud cover
Willowbrook, 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
Willowbrook, 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).
