Climate and monthly weather forecast
Whittier, CA

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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 / Weather Forecasting / Data Sources

Frequently asked questions

How many days does it rain in Whittier?

Throughout the year, there are 38.2 rainfall days, and 5.28" (134mm) of precipitation is accumulated.

What is the month with the least sunshine in Whittier?

The month with the least sunshine in Whittier, California, is February, with an average of 6.7h of sunshine.

When is the lowest UV index in Whittier?

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

When is Daylight Saving Time (DST) 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.

What is the most humid month in Whittier?

June is the most humid month, with an average relative humidity of 62%.

What is the driest month in Whittier?

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

When are the longest days in Whittier?

The month with the longest days in Whittier is June, with an average of 14h and 24min of daylight.

What are the months with the most sunshine in Whittier?

The months with the most sunshine in Whittier are July and August, with an average of 12h of sunshine.

What part of the year is the hottest in Whittier?

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).

What is the month with the highest UV index in Whittier?

With an average maximum UV index of 7, August is the month with the highest UV index in Whittier.

What is the least humid month in Whittier?

The least humid month in Whittier is November, with an average relative humidity of 47%.

What month is the coldest in Whittier?

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).

What is the rainiest month in Whittier?

December is the month with the most rainfall in Whittier, California. Rain falls for 4.8 days and accumulates 1.14" (29mm) of precipitation.

What is the month with the shortest days in Whittier?

December has the shortest days of the year in Whittier, with an average of 9h and 54min of daylight.

Average temperature
Whittier, CA

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 - Whittier, CA

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 - Whittier, CA

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

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 - Whittier, CA

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 - Whittier, CA

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 / Average sunshine - Whittier, CA

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).

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 - Whittier, CA

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

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 visibility
Whittier, CA

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).

Whittier, California, USA

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