Monthly weather forecast and climate
Princeton, CA

Weather in January

January in Princeton, California, is a moderate winter month, with average temperature varying between 56.8°F (13.8°C) and 42.6°F (5.9°C). In January, the average high-temperature is practically the same as in December - a mild 56.8°F (13.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another mild month in Princeton, California, with average temperature varying between 59.7°F (15.4°C) and 43°F (6.1°C). In February, the average high-temperature is essentially the same as in January - a still moderate 59.7°F (15.4°C). Weather in February »

Weather in March

March, the first month of the spring, in Princeton, is an enjoyable month, with average temperature varying between 64°F (17.8°C) and 44.4°F (6.9°C). In March, the average high-temperature is relatively the same as in February - an enjoyable 64°F (17.8°C). Weather in March »

Weather in April

April in Princeton, California, is a pleasant spring month, with average temperature varying between 71.6°F (22°C) and 48.6°F (9.2°C). In Princeton, California, the average high-temperature in April marginally rises, from an enjoyable 64°F (17.8°C) in March, to a pleasant 71.6°F (22°C). Weather in April »

Weather in May

May, the last month of the spring, in Princeton, is a moderately hot month, with average temperature fluctuating between 80.4°F (26.9°C) and 54.1°F (12.3°C). In May, the average high-temperature marginally rises, from a pleasant 71.6°F (22°C) in April, to a warm 80.4°F (26.9°C). Weather in May »

Weather in June

June, the first month of the summer, in Princeton, is a hot month, with temperature in the range of an average high of 91.2°F (32.9°C) and an average low of 60.3°F (15.7°C). In Princeton, the average high-temperature increases, from a warm 80.4°F (26.9°C) in May, to a tropical 91.2°F (32.9°C). Weather in June »

Weather in July

July in Princeton, California, is a very hot summer month, with temperature in the range of an average low of 61.5°F (16.4°C) and an average high of 98.8°F (37.1°C). The warmest month is July, with an average high-temperature of 98.8°F (37.1°C) and an average low-temperature of 61.5°F (16.4°C). Weather in July »

Weather in August

August, the last month of the summer, in Princeton, is another torrid month, with temperature in the range of an average high of 97°F (36.1°C) and an average low of 61.3°F (16.3°C). In Princeton, the average high-temperature is relatively the same as in July - a still torrid 97°F (36.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a hot month in Princeton, California, with temperature in the range of an average high of 90.7°F (32.6°C) and an average low of 61°F (16.1°C). In September, the average high-temperature marginally drops, from a torrid 97°F (36.1°C) in August, to a hot 90.7°F (32.6°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Princeton, California, with average temperature ranging between max 77.5°F (25.3°C) and min 54.9°F (12.7°C). In Princeton, the average high-temperature drops, from a hot 90.7°F (32.6°C) in September, to a moderately hot 77.5°F (25.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Princeton, California, with average temperature ranging between min 47.3°F (8.5°C) and max 63.9°F (17.7°C). In November, the average high-temperature drops, from a moderately hot 77.5°F (25.3°C) in October, to a comfortable 63.9°F (17.7°C). Weather in November »

Weather in December

December, the first month of the winter, in Princeton, is also a fresh month, with average temperature fluctuating between 42.1°F (5.6°C) and 54.5°F (12.5°C). December is the coldest month, with an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 42.1°F (5.6°C). Weather in December »
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FAQ

How many days does it rain in Princeton?

Throughout the year, in Princeton, California, there are 58.9 rainfall days, and 6.89" (175mm) of precipitation is accumulated.

What is the rainiest month in Princeton?

The wettest months in Princeton are February and December, with an average 1.3" (33mm) of rainfall.

When is the lowest UV index in Princeton?

February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Princeton.

What is the most humid month in Princeton?

March is the most humid month in Princeton, California, with an average relative humidity of 71%.

When are the longest days in Princeton?

The month with the longest days in Princeton is June, with an average of 14.9h of daylight.

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

June through August, with an average maximum UV index of 7, are months with the highest UV index in Princeton, California.

What is the warmest month in Princeton?

The warmest month in Princeton, California, is July, with an average high-temperature of 98.8°F (37.1°C) and an average low-temperature of 61.5°F (16.4°C).

What is the driest month in Princeton?

Months with the least rainfall in Princeton, California, are July and August Rain falls for 1 days and accumulates 0.04" (1mm) of rain.

What month has the most sunshine in Princeton?

The month with the most sunshine is July, with an average of 12.1h of sunshine.

What is the least humid month in Princeton?

September is the least humid month in Princeton, California, with an average relative humidity of 36%.

What is the coldest month in Princeton?

December is the coldest month in Princeton, with an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 42.1°F (5.6°C).

What is the month with the shortest days in Princeton?

The month with the shortest days is December, with an average of 9.4h of daylight.

What is the month with the least sunshine in Princeton?

December has the least sunshine of the year in Princeton, with an average of 5.8h of sunshine.

Average temperature
Princeton, CA

Average temperature - Princeton, CA

The warmest month (with the highest average high temperature) is July (98.8°F).
The month with the lowest average high temperature is December (54.5°F).

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).

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Average pressure
Princeton, CA

Average pressure - Princeton, CA

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed
Princeton, CA

Average wind speed - Princeton, CA

The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average rainfall
Princeton, CA

Average rainfall - Princeton, CA

The wettest months (with the highest rainfall) are February and December (1.3").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Princeton, CA

Average rainfall days - Princeton, CA

The month with the highest number of rainy days is March (10.4 days).
The month with the least rainy days is July (1 days).

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Average daylight / Average sunshine
Princeton, CA

Average daylight / Average sunshine - Princeton, CA

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days
Princeton, CA

Average sunshine days - Princeton, CA

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (19.7 days).

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Average UV index
Princeton, CA

Average UV index - Princeton, CA

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are February, November and December (UV index 3).

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Average visibility
Princeton, CA

Average visibility - Princeton, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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