Climate and monthly weather forecast
Los Alamos, CA

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Weather in January

January, the same as December, is another comfortable winter month in Los Alamos, California, with an average temperature varying between 63°F (17.2°C) and 49.3°F (9.6°C). The shift into January records an average high-temperature of a still comfortable 63°F (17.2°C), subtly varied from December's 61.2°F (16.2°C). Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Los Alamos, California, with an average temperature fluctuating between 47.8°F (8.8°C) and 62.1°F (16.7°C). Los Alamos's average high-temperature in February is a still comfortable 62.1°F (16.7°C), marking an insignificant difference from the 63°F (17.2°C) of January. Weather in February »

Weather in March

March, the first month of the spring in Los Alamos, is still a comfortable month, with an average temperature ranging between min 48.7°F (9.3°C) and max 64°F (17.8°C). March brings an average high-temperature of a still comfortable 64°F (17.8°C), showing a slight difference from February's 62.1°F (16.7°C). Weather in March »

Weather in April

April, like March, in Los Alamos, California, is another enjoyable spring month, with an average temperature varying between 50.4°F (10.2°C) and 66.9°F (19.4°C). As April takes hold, the average high-temperature is a still refreshing 66.9°F (19.4°C), nearly mirroring that of the previous month. Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Los Alamos, California, with temperature in the range of an average low of 52.3°F (11.3°C) and an average high of 69.6°F (20.9°C). Los Alamos's average high-temperature marks a pleasant 69.6°F (20.9°C) with the advent of May, closely mirroring that of the preceding month. Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Los Alamos, California, with an average temperature fluctuating between 56.3°F (13.5°C) and 74.5°F (23.6°C). The advent of June reveals an average high-temperature of a warm 74.5°F (23.6°C), showing minimal difference from the prior month. Weather in June »

Weather in July

July, like June, in Los Alamos, California, is a moderately hot summer month, with an average temperature varying between 78.3°F (25.7°C) and 59.7°F (15.4°C). Los Alamos experiences a subtle adjustment in high-temperatures to a still moderately hot 78.3°F (25.7°C) with the onset of July, maintaining near parity with June's 74.5°F (23.6°C). Weather in July »

Weather in August

August, the last month of the summer in Los Alamos, is also a moderately hot month, with an average temperature fluctuating between 78.8°F (26°C) and 60.8°F (16°C). August brings the highest temperatures, with an average high of 78.8°F (26°C) and an average low of 60.8°F (16°C). Weather in August »

Weather in September

September, the first month of the autumn in Los Alamos, is still a warm month, with temperature in the range of an average low of 61.2°F (16.2°C) and an average high of 77.5°F (25.3°C). Los Alamos marks the onset of September with an average high-temperature of a still warm 77.5°F (25.3°C), subtly divergent from August's 78.8°F (26°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Los Alamos, California, with an average temperature ranging between max 73.6°F (23.1°C) and min 57.9°F (14.4°C). In October, Los Alamos notes an average high-temperature of a still warm 73.6°F (23.1°C), hardly different from the preceding month. Weather in October »

Weather in November

The last month of the autumn, November, is another refreshing month in Los Alamos, California, with temperature in the range of an average high of 67.5°F (19.7°C) and an average low of 52.9°F (11.6°C). The start of November involves a subtle temperature drop, shifting from a warm 73.6°F (23.1°C) in October to an enjoyable 67.5°F (19.7°C). Weather in November »

Weather in December

December, the first month of the winter in Los Alamos, is still a comfortable month, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 48.6°F (9.2°C). December is the coldest month, with an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 48.6°F (9.2°C). Weather in December »
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the rainiest month?

The month with the most rainfall in Los Alamos is January, when the rain falls for 4.8 days and typically aggregates up to 1.38" (35mm) of precipitation.

How much does it rain?

In Los Alamos, during the entire year, the rain falls for 37.7 days and collects up to 5.98" (152mm) of precipitation.

What is the month with the least sunshine?

The month with the least sunshine is February, with an average of 6.6h of sunshine.

What is the most humid month?

With an average relative humidity of 67%, March is the most humid month.

When is Daylight Saving Time (DST) in Los Alamos?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Los Alamos, 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.

What is the driest month?

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?

The month with the longest days is June, with an average of 14h and 30min of daylight.

What are the months with the most sunshine?

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

What are the months with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month?

With average temperatures fluctuating between a high of 78.8°F (26°C) and a low of 60.8°F (16°C), August stands out as the warmest month.

What is the least humid month?

October and November, with an average relative humidity of 58%, are the least humid months in Los Alamos, California.

What are the coldest months?

The month of December sees the average lowest temperatures, reaching 61.2°F (16.2°C) at the peak and 48.6°F (9.2°C) at the low.

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 in Los Alamos.

What is the month with the lowest UV index?

December is the month with the lowest UV index, with an average maximum UV index of 3.

Average temperature
Los Alamos, CA

Average temperature - Los Alamos, CA

The warmest month (with the highest average high temperature) is August (78.8°F).
The month with the lowest average high temperature is December (61.2°F).

The month with the highest average low temperature is September (61.2°F).
The coldest month (with the lowest average low temperature) is February (47.8°F).

Average pressure
Los Alamos, CA

Average pressure - Los Alamos, CA

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

Average wind speed
Los Alamos, CA

Average wind speed - Los Alamos, CA

The windiest month (with the highest average wind speed) is May (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity
Los Alamos, CA

Average humidity - Los Alamos, CA

The month with the highest relative humidity is March (67%).
The months with the lowest relative humidity are October and November (58%).

Average rainfall
Los Alamos, CA

Average rainfall - Los Alamos, CA

The wettest month (with the highest rainfall) is January (1.38").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days
Los Alamos, CA

Average rainfall days - Los Alamos, CA

The month with the highest number of rainy days is March (6.2 days).
The month with the least rainy days is August (0.8 days).

Average daylight / Average sunshine
Los Alamos, CA

Average daylight / Average sunshine - Los Alamos, CA

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days
Los Alamos, CA

Average sunshine days - Los Alamos, CA

The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (22.3 days).

Average visibility
Los Alamos, CA

Average visibility - Los Alamos, 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).

Los Alamos, California, USA

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