Climate and monthly weather forecast
Westminster, CA

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Weather in January

January, the same as December, is another enjoyable winter month in Westminster, California, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 53.2°F (11.8°C). The transition into January marks the average high-temperature at a still enjoyable 64.9°F (18.3°C), differing minimally from December's 63.1°F (17.3°C). Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Westminster, California, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 52°F (11.1°C). The commencement of February records an average high-temperature of a still enjoyable 64°F (17.8°C), barely varying from January's 64.9°F (18.3°C). Weather in February »

Weather in March

The first month of the spring, March, is also an enjoyable month in Westminster, California, with an average temperature fluctuating between 53.2°F (11.8°C) and 66.4°F (19.1°C). During March, Westminster records an average high-temperature of a still comfortable 66.4°F (19.1°C), marking a slight divergence from February's 64°F (17.8°C). Weather in March »

Weather in April

April is an agreeable spring month in Westminster, California, with an average temperature fluctuating between 68.2°F (20.1°C) and 54.9°F (12.7°C). April's onset records an average high-temperature of a pleasant 68.2°F (20.1°C), a near match to March's 66.4°F (19.1°C). Weather in April »

Weather in May

May, the last month of the spring in Westminster, is also an agreeable month, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 56.8°F (13.8°C). Westminster marks the onset of May with an average high-temperature of a still agreeable 69.4°F (20.8°C), a subtle shift from April's 68.2°F (20.1°C). Weather in May »

Weather in June

The first month of the summer, June, is also an agreeable month in Westminster, California, with an average temperature fluctuating between 72.3°F (22.4°C) and 59°F (15°C). June brings an average high-temperature of a still pleasant 72.3°F (22.4°C), showing a slight difference from May's 69.4°F (20.8°C). Weather in June »

Weather in July

July is a warm summer month in Westminster, California, with an average temperature varying between 76.8°F (24.9°C) and 63.1°F (17.3°C). Westminster's average high-temperature in July sits at a moderately hot 76.8°F (24.9°C), showing little difference from the previous month. Weather in July »

Weather in August

August, the last month of the summer in Westminster, is another warm month, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 64.9°F (18.3°C). August, recognised by an average high temperature of 78.6°F (25.9°C) and a low of 64.9°F (18.3°C), is Westminster's warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Westminster, is still a warm month, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 78.3°F (25.7°C). With the transition into September, Westminster notes an average high-temperature of a still moderately hot 78.3°F (25.7°C), closely resembling August. Weather in September »

Weather in October

October, like September, in Westminster, California, is another warm autumn month, with temperature in the range of an average low of 62.1°F (16.7°C) and an average high of 74.5°F (23.6°C). October's weather displays an average high-temperature of a still warm 74.5°F (23.6°C), slightly varied from September's 78.3°F (25.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Westminster, is another pleasant month, with an average temperature varying between 57.4°F (14.1°C) and 69.6°F (20.9°C). November's average high-temperature stands at an agreeable 69.6°F (20.9°C), showing little deviation from October's 74.5°F (23.6°C). Weather in November »

Weather in December

December, the first month of the winter in Westminster, is still a refreshing month, with an average temperature ranging between max 63.1°F (17.3°C) and min 52.3°F (11.3°C). December, with an average high of 63.1°F (17.3°C) and a low of 52.3°F (11.3°C), signifies the coldest month of the year. Weather in December »
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How much does it rain?

In Westminster, during the entire year, the rain falls for 25.2 days and collects up to 1.57" (40mm) of precipitation.

What is the month with the lowest UV index?

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

When is Daylight Saving Time (DST)?

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?

June is the most humid month, with an average relative humidity of 71%.

What is the driest month?

June is the only month when rain does not fall.

When are the longest days?

With an average of 14h and 24min of daylight, June has the longest days of the year.

When does it rain?

January through May, July through December are months with rainfall.

What is the month with the most sunshine?

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

When is the highest UV index?

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

What part of the year is the hottest?

Westminster experiences its average highest temperatures in August, reaching a peak of 78.6°F (25.9°C) and a minimum of 64.9°F (18.3°C).

What is the least humid month?

The least humid month in Westminster is November, with an average relative humidity of 56%.

What part of the year is the coldest?

December is Westminster's coldest month, registering average high temperatures of 63.1°F (17.3°C) and lows of 52.3°F (11.3°C).

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 3.1 days and typically aggregates up to 0.35" (9mm) of precipitation.

What is the month with the shortest days?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 6.7h of sunshine.

Average temperature
Westminster, CA

Average temperature - Westminster, CA

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (63.1°F).

The month with the highest average low temperature is September (65.1°F).
The coldest month (with the lowest average low temperature) is February (52°F).

Average pressure
Westminster, CA

Average pressure - Westminster, CA

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
Westminster, CA

Average wind speed - Westminster, CA

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5.2mph).

Average humidity
Westminster, CA

Average humidity - Westminster, CA

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).

Average rainfall
Westminster, CA

Average rainfall - Westminster, CA

The wettest month (with the highest rainfall) is December (0.35").
The driest month (with the least rainfall) is June (0").

Average rainfall days
Westminster, CA

Average rainfall days - Westminster, CA

The month with the highest number of rainy days is March (4.6 days).
The month with the least rainy days is June (0.7 days).

Average daylight / Average sunshine
Westminster, CA

Average daylight / Average sunshine - Westminster, CA

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

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
Westminster, CA

Average sunshine days - Westminster, CA

The months with the most sunshine days are May and June (29 days).
The month with the least sunshine days is February (24.4 days).

Average UV index
Westminster, CA

Average UV index - Westminster, CA

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

Average visibility
Westminster, CA

Average visibility - Westminster, 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).

Westminster, California, USA

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