Princeton
New Jersey, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Princeton, NJ

January, the same as December, is a wintry winter month in Princeton, New Jersey, with average temperature ranging between min 24.3°F (-4.3°C) and max 36.9°F (2.7°C). January is the coldest month, with an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 24.3°F (-4.3°C). Weather in January »

February, the last month of the winter, in Princeton, is also a wintry month, with average temperature varying between 39.9°F (4.4°C) and 26.1°F (-3.3°C). In Princeton, the average high-temperature in February is almost the same as in January - a still cold 39.9°F (4.4°C). Weather in February »

March, the first month of the spring, in Princeton, is a chilly month, with average temperature varying between 48.6°F (9.2°C) and 33.3°F (0.7°C). In Princeton, the average high-temperature slightly increases, from a cold 39.9°F (4.4°C) in February, to a frosty 48.6°F (9.2°C). Weather in March »

April in Princeton, New Jersey, is a moderate spring month, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 43.3°F (6.3°C). In Princeton, New Jersey, the average high-temperature rises, from a chilly 48.6°F (9.2°C) in March, to a mild 60.4°F (15.8°C). Weather in April »

The last month of the spring, May, is a pleasant month in Princeton, New Jersey, with average temperature fluctuating between 70.5°F (21.4°C) and 53.2°F (11.8°C). In Princeton, New Jersey, the average high-temperature increases, from a mild 60.4°F (15.8°C) in April, to a pleasant 70.5°F (21.4°C). Weather in May »

The first month of the summer, June, is a warm month in Princeton, New Jersey, with temperature in the range of an average low of 61°F (16.1°C) and an average high of 78.4°F (25.8°C). In Princeton, New Jersey, the average high-temperature slightly increases, from a pleasant 70.5°F (21.4°C) in May, to a warm 78.4°F (25.8°C). Weather in June »

July, like June, in Princeton, New Jersey, is another warm summer month, with temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 66.9°F (19.4°C). July is the warmest month, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 66.9°F (19.4°C). In July, the average heat index is evaluated at a tropical 93.9°F (34.4°C). Weather in July »

August, the last month of the summer, in Princeton, is another warm month, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 82.9°F (28.3°C). In August, the average high-temperature is relatively the same as in July - a still warm 82.9°F (28.3°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Princeton, New Jersey, with average temperature fluctuating between 75.7°F (24.3°C) and 59°F (15°C). In Princeton, the average high-temperature slightly decreases, from a warm 82.9°F (28.3°C) in August, to a still moderately hot 75.7°F (24.3°C). Weather in September »

October, like September, in Princeton, New Jersey, is another comfortable autumn month, with average temperature varying between 63.9°F (17.7°C) and 49.1°F (9.5°C). In Princeton, the average high-temperature in October drops, from a moderately hot 75.7°F (24.3°C) in September, to a comfortable 63.9°F (17.7°C). Weather in October »

November, the last month of the autumn, in Princeton, is also a fresh month, with temperature in the range of an average low of 37.8°F (3.2°C) and an average high of 51.8°F (11°C). In Princeton, the average high-temperature decreases, from a comfortable 63.9°F (17.7°C) in October, to a fresh 51.8°F (11°C). Weather in November »

December, the first month of the winter, in Princeton, is also a frosty month, with average temperature varying between 31.1°F (-0.5°C) and 43°F (6.1°C). In December, the average high-temperature marginally drops, from a cool 51.8°F (11°C) in November, to a frosty 43°F (6.1°C). Weather in December »

What is the coldest month in Princeton?

With an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 24.3°F (-4.3°C), January is the coldest month in Princeton, New Jersey.

How much does it rain in Princeton?

Throughout the year, there are 119.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

When does it snow in Princeton?

Months with snowfall are January through May, November and December.

How many days does it snow in Princeton?

Throughout the year, in Princeton, New Jersey, there are 16.4 snowfall days, and 4.41" (112mm) of snow is accumulated.

When is the lowest UV index in Princeton?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Princeton, New Jersey.

What is the month with the least sunshine in Princeton?

February has the least sunshine of the year, with an average of 4.8h of sunshine.

What is the snowiest month in Princeton?

The month with the most snowfall in Princeton is March when snow falls for 3.7 days and typically aggregates up to 1.42" (36mm) of snow.

What is the least humid month in Princeton?

With an average relative humidity of 73%, April is the least humid month.

When it does not snow in Princeton?

In Princeton, New Jersey, snow does not fall in June through October.

When are the longest days in Princeton?

The month with the longest days is June, with an average of 15h of daylight.

When is the highest UV index in Princeton?

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

What is the warmest month in Princeton?

The warmest month is July, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 66.9°F (19.4°C).

What is the rainiest month in Princeton?

July is the month with the most rainfall in Princeton. Rain falls for 13.9 days and accumulates 1.69" (43mm) of precipitation.

What month has the most sunshine in Princeton?

July has the most sunshine of the year in Princeton, New Jersey, with an average of 10.5h of sunshine.

What is the driest month in Princeton?

The month with the least rainfall is September when the rain falls for 10 days and typically collects 0.67" (17mm) of precipitation.

What is the most humid month in Princeton?

The most humid month is October, with an average relative humidity of 79%.

What is the month with the shortest days in Princeton?

The month with the shortest days in Princeton is December, with an average of 9.3h of daylight.
Average rainfall - Princeton, NJ
Average rainfall days - Princeton, NJ

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (6.1 days).

Average snowfall - Princeton, NJ
Average snowfall days - Princeton, NJ

The month with the highest number of snowfall days is January (4.6 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine - Princeton, NJ

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average UV index - Princeton, NJ