Climate and monthly weather forecastWhittier, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another refreshing winter month in Whittier, California, with an average temperature varying between 67.1°F (19.5°C) and 50.5°F (10.3°C). Whittier notes an average high-temperature of a still enjoyable 67.1°F (19.5°C) in January, hardly diverging from December. Weather in January »Weather in February
The last month of the winter, February, is also an enjoyable month in Whittier, California, with an average temperature fluctuating between 66.7°F (19.3°C) and 49.8°F (9.9°C). With the advent of February, Whittier's high-temperatures adjust to a still comfortable 66.7°F (19.3°C), closely aligning with the preceding month. Weather in February »Weather in March
March, the first month of the spring in Whittier, is an agreeable month, with an average temperature varying between 51.4°F (10.8°C) and 69.6°F (20.9°C). The onset of March marks an average high-temperature of an agreeable 69.6°F (20.9°C), hardly differing from February's 66.7°F (19.3°C). Weather in March »Weather in April
April, the same as March, in Whittier, California, is another pleasant spring month, with an average temperature varying between 72.7°F (22.6°C) and 53.8°F (12.1°C). Whittier's April average high-temperature settles at a still pleasant 72.7°F (22.6°C), showing a near match with the preceding month. Weather in April »Weather in May
The last month of the spring, May, is a warm month in Whittier, California, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 74.8°F (23.8°C). In May, Whittier experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 72.7°F (22.6°C) in April to a moderately hot 74.8°F (23.8°C). Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Whittier, California, with an average temperature varying between 79.2°F (26.2°C) and 59.4°F (15.2°C). The arrival of June brings an average high-temperature of a still warm 79.2°F (26.2°C), subtly diverging from May's 74.8°F (23.8°C). Weather in June »Weather in July
July, like June, in Whittier, California, is a moderately hot summer month, with an average temperature ranging between max 84.7°F (29.3°C) and min 63.9°F (17.7°C). As July sets, the average high-temperature shows a slight increase, moving up from 79.2°F (26.2°C) in June to a still warm 84.7°F (29.3°C). Weather in July »Weather in August
August, the last month of the summer in Whittier, is a hot month, with an average temperature ranging between min 65.8°F (18.8°C) and max 86.5°F (30.3°C). Whittier's August weather reaches an average high of 86.5°F (30.3°C) and an average low of 65.8°F (18.8°C), making it the warmest month. For August, the heat index is evaluated at a tropical 89.6°F (32°C). Weather in August »Weather in September
September, the first month of the autumn in Whittier, is also a moderately hot month, with an average temperature ranging between max 85.1°F (29.5°C) and min 64.8°F (18.2°C). Whittier notes an average high-temperature of a moderately hot 85.1°F (29.5°C) in September, hardly diverging from August. Weather in September »Weather in October
October, like September, in Whittier, California, is another warm autumn month, with an average temperature fluctuating between 79.2°F (26.2°C) and 61°F (16.1°C). A moderate decline in average high-temperatures is noted in October, moving from 85.1°F (29.5°C) in September to a still warm 79.2°F (26.2°C). Weather in October »Weather in November
November, the last month of the autumn in Whittier, is also an agreeable month, with an average temperature varying between 55.4°F (13°C) and 72.3°F (22.4°C). With the onset of November, the average high-temperature subtly recedes from October's moderately hot 79.2°F (26.2°C) to a pleasant 72.3°F (22.4°C). Weather in November »Weather in December
The first month of the winter, December, is still a refreshing month in Whittier, California, with an average temperature fluctuating between 64.9°F (18.3°C) and 50°F (10°C). Whittier's coldest weather arrives in December, when temperatures average a high of 64.9°F (18.3°C) and a low of 50°F (10°C). Weather in December »Updated: Feb 9, 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
Throughout the year, there are 38.2 rainfall days, and 5.28" (134mm) of precipitation is accumulated.
The month with the least sunshine in Whittier, California, is February, with an average of 6.7h of sunshine.
February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Whittier.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
June is the most humid month, with an average relative humidity of 62%.
The month with the least rainfall is June, when the rain falls for 1 days and typically collects 0.04" (1mm) of precipitation.
The month with the longest days in Whittier is June, with an average of 14h and 24min of daylight.
The months with the most sunshine in Whittier are July and August, with an average of 12h of sunshine.
August, on average, is the warmest month in Whittier, registering a high temperature of 86.5°F (30.3°C) and a low of 65.8°F (18.8°C).
With an average maximum UV index of 7, August is the month with the highest UV index in Whittier.
The least humid month in Whittier is November, with an average relative humidity of 47%.
Whittier's coldest month, December, registers temperatures that range from a high of 64.9°F (18.3°C) to a low of 50°F (10°C).
December is the month with the most rainfall in Whittier, California. Rain falls for 4.8 days and accumulates 1.14" (29mm) of precipitation.
December has the shortest days of the year in Whittier, with an average of 9h and 54min of daylight.
Average temperature
Whittier, CA
The warmest month (with the highest average high temperature) is August (86.5°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 (49.8°F).
Average pressure
Whittier, 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:
29.92"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.89"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 month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Whittier, CA
- Average wind speed in January:
5.4mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.3mph - Average wind speed in April:
6mph - 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 (6mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).
Average humidity
Whittier, CA
The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (47%).
Average rainfall
Whittier, CA
- Average rainfall in January:
0.94" - Average rainfall in February:
1.06" - Average rainfall in March:
0.67" - Average rainfall in April:
0.39" - Average rainfall in May:
0.12" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.12" - Average rainfall in August:
0.08" - Average rainfall in September:
0.08" - Average rainfall in October:
0.12" - Average rainfall in November:
0.51" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Whittier, CA
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
5.1 days - Average rainfall days in April:
4.1 days - Average rainfall days in May:
2.8 days - Average rainfall days in June:
1 days
- Average rainfall days in July:
2.3 days - Average rainfall days in August:
1.3 days - Average rainfall days in September:
2.3 days - Average rainfall days in October:
2.1 days - Average rainfall days in November:
3.3 days - Average rainfall days in December:
4.8 days
The month with the highest number of rainy days is March (5.1 days).
The month with the least rainy days is June (1 days).
Average daylight / Average sunshine
Whittier, 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 12min - 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 42min - Average sunshine in March:
8h and 48min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 6min - 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 30min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days
Whittier, CA
- Average sunshine days in January:
26.3 days - Average sunshine days in February:
22.6 days - Average sunshine days in March:
25.7 days - Average sunshine days in April:
25.6 days - Average sunshine days in May:
26.7 days - Average sunshine days in June:
27.9 days
- Average sunshine days in July:
27.3 days - Average sunshine days in August:
27.8 days - Average sunshine days in September:
25.5 days - Average sunshine days in October:
27.2 days - Average sunshine days in November:
25.7 days - Average sunshine days in December:
24.8 days
The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (22.6 days).
Average UV index
Whittier, CA
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 4).
Average cloud cover
Whittier, 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
Whittier, 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).
