Climate and monthly weather forecast
Chiriaco Summit, CA

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Weather in January

January is a comfortable winter month in Chiriaco Summit, California, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 47.3°F (8.5°C). During January, Chiriaco Summit observes a subtle ascent to an enjoyable 62.2°F (16.8°C) from December's 60.6°F (15.9°C) in the average high-temperature. Weather in January »

Weather in February

February, the last month of the winter in Chiriaco Summit, is also an enjoyable month, with an average temperature varying between 64°F (17.8°C) and 48.6°F (9.2°C). During February, the average high-temperature is a still enjoyable 64°F (17.8°C), maintaining a close resemblance to that of the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Chiriaco Summit, is a pleasant month, with an average temperature fluctuating between 69.8°F (21°C) and 52.3°F (11.3°C). March's onset witnesses a minor shift in the average high-temperature, moving from an enjoyable 64°F (17.8°C) in February to a pleasant 69.8°F (21°C). Weather in March »

Weather in April

April is a moderately hot spring month in Chiriaco Summit, California, with an average temperature varying between 75.9°F (24.4°C) and 55.4°F (13°C). Chiriaco Summit's transition into April brings a slight rise in the average high-temperature, moving from an agreeable 69.8°F (21°C) in March to a moderately hot 75.9°F (24.4°C). Weather in April »

Weather in May

The last month of the spring, May, is another warm month in Chiriaco Summit, California, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 61°F (16.1°C). The embrace of May brings a minor uplift in the average high-temperature, shifting from 75.9°F (24.4°C) in April to a still moderately hot 82°F (27.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Chiriaco Summit, California, with an average temperature varying between 68.5°F (20.3°C) and 91.8°F (33.2°C). As June begins, there is an increase in the average high-temperature, moving from a moderately hot 82°F (27.8°C) in May to a tropical 91.8°F (33.2°C). Weather in June »

Weather in July

July is a very hot summer month in Chiriaco Summit, California, with an average temperature ranging between max 95.4°F (35.2°C) and min 75.2°F (24°C). The temperatures reach their highest averages in July, with highs of 95.4°F (35.2°C) and lows of 75.2°F (24°C). In July, the average relative humidity is 30%. Weather in July »

Weather in August

August, the last month of the summer in Chiriaco Summit, is also a hot month, with an average temperature fluctuating between 94.6°F (34.8°C) and 76.3°F (24.6°C). The advent of August presents an average high-temperature of a hot 94.6°F (34.8°C), maintaining a close correlation with the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Chiriaco Summit, is also a hot month, with temperature in the range of an average low of 72°F (22.2°C) and an average high of 88.7°F (31.5°C). As September arrives, Chiriaco Summit's weather displays a minor decrease in high-temperatures, transitioning from August's hot 94.6°F (34.8°C) to a still tropical 88.7°F (31.5°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Chiriaco Summit, California, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 79.5°F (26.4°C). October's arrival correlates with a reduction in the average high-temperature, down from a hot 88.7°F (31.5°C) in September to a moderately hot 79.5°F (26.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Chiriaco Summit, is another pleasant month, with an average temperature fluctuating between 69.8°F (21°C) and 54°F (12.2°C). The shift to November brings a decrease in the average high-temperature, falling from a moderately hot 79.5°F (26.4°C) in October to an agreeable 69.8°F (21°C). Weather in November »

Weather in December

The first month of the winter, December, is still a mild month in Chiriaco Summit, California, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 46.8°F (8.2°C). Chiriaco Summit's December weather, with an average high temperature of 60.6°F (15.9°C) and an average low temperature of 46.8°F (8.2°C), tends to be the coldest of the year. Weather in December »
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How much does it rain?

In Chiriaco Summit, during the entire year, the rain falls for 46.2 days and collects up to 4.09" (104mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Chiriaco Summit, 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 months with the least rainfall are May and June Rain falls for 2.3 days and accumulates 0.12" (3mm) of rain.

What is the least humid month?

June is the least humid month, with an average relative humidity of 29%.

When are the longest days?

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

What month has the most sunshine?

June has the most sunshine of the year, with an average of 12.2h of sunshine.

What is the warmest month?

July brings the highest temperatures, with an average high of 95.4°F (35.2°C) and an average low of 75.2°F (24°C).

What is the rainiest month in Chiriaco Summit?

The month with the most rainfall is July, when the rain falls for 6.9 days and typically aggregates up to 0.79" (20mm) of precipitation.

When is the highest UV index?

With an average maximum UV index of 8, July is the month with the highest UV index.

What time of the year is the coldest in Chiriaco Summit?

The month of December, characterized by an average high of 60.6°F (15.9°C) and a low of 46.8°F (8.2°C), is recognized as the coldest.

What is the most humid month?

With an average relative humidity of 46%, December is the most humid month.

What is the month with the shortest days?

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

What is the month with the least sunshine?

With an average of 7.1h of sunshine, December has the least sunshine of the year.

When is the lowest UV index?

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

Average temperature
Chiriaco Summit, CA

Average temperature - Chiriaco Summit, CA

The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is December (60.6°F).

The month with the highest average low temperature is August (76.3°F).
The coldest month (with the lowest average low temperature) is December (46.8°F).

Average pressure
Chiriaco Summit, CA

Average pressure - Chiriaco Summit, CA

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).

Average wind speed
Chiriaco Summit, CA

Average wind speed - Chiriaco Summit, CA

The windiest month (with the highest average wind speed) is May (8.2mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).

Average humidity
Chiriaco Summit, CA

Average humidity - Chiriaco Summit, CA

The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is June (29%).

Average rainfall
Chiriaco Summit, CA

Average rainfall - Chiriaco Summit, CA

The wettest month (with the highest rainfall) is July (0.79").
The driest months (with the least rainfall) are May and June (0.12").

Average rainfall days
Chiriaco Summit, CA

Average rainfall days - Chiriaco Summit, CA

The month with the highest number of rainy days is July (6.9 days).
The month with the least rainy days is June (1.5 days).

Average daylight / Average sunshine
Chiriaco Summit, CA

Average daylight / Average sunshine - Chiriaco Summit, 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 month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).

Average sunshine days
Chiriaco Summit, CA

Average sunshine days - Chiriaco Summit, CA

The month with the most sunshine days is October (27.4 days).
The month with the least sunshine days is July (19.4 days).

Average visibility
Chiriaco Summit, CA

Average visibility - Chiriaco Summit, 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).

Chiriaco Summit, California, USA

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