Monthly weather forecast and climate
Princeton Junction, NJ

January, like December, in Princeton Junction, New Jersey, is a wintry winter month, with average temperature ranging between min 24.3°F (-4.3°C) and max 36.9°F (2.7°C). 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. Weather in January »

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

March, the first month of the spring, in Princeton Junction, is a frosty month, with average temperature fluctuating between 48.6°F (9.2°C) and 33.3°F (0.7°C). In March, 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 Junction, New Jersey, is a mild spring month, with temperature in the range of an average low of 43.3°F (6.3°C) and an average high of 60.4°F (15.8°C). In Princeton Junction, the average high-temperature in April rises, from a frosty 48.6°F (9.2°C) in March, to a moderate 60.4°F (15.8°C). Weather in April »

The last month of the spring, May, is an agreeable month in Princeton Junction, New Jersey, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 70.5°F (21.4°C). In May, the average high-temperature rises, from a moderate 60.4°F (15.8°C) in April, to an agreeable 70.5°F (21.4°C). Weather in May »

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

July, the same as June, is another warm summer month in Princeton Junction, New Jersey, with average temperature fluctuating between 84.7°F (29.3°C) and 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). The average heat index in July is estimated at a hot 93.9°F (34.4°C). Weather in July »

August, the last month of the summer, in Princeton Junction, is also a moderately hot month, with average temperature fluctuating between 82.9°F (28.3°C) and 65.8°F (18.8°C). In Princeton Junction, the average high-temperature is almost the same as in July - a still moderately hot 82.9°F (28.3°C). Weather in August »

September, the first month of the autumn, in Princeton Junction, is still a warm month, with average temperature varying between 75.7°F (24.3°C) and 59°F (15°C). In September, the average high-temperature marginally drops, 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 Junction, New Jersey, is another enjoyable autumn month, with average temperature fluctuating between 49.1°F (9.5°C) and 63.9°F (17.7°C). In October, the average high-temperature drops, from a warm 75.7°F (24.3°C) in September, to an enjoyable 63.9°F (17.7°C). Weather in October »

November, the last month of the autumn, in Princeton Junction, is another cool month, with average temperature varying between 51.8°F (11°C) and 37.8°F (3.2°C). In November, the average high-temperature drops, from an enjoyable 63.9°F (17.7°C) in October, to a cool 51.8°F (11°C). Weather in November »

The first month of the winter, December, is also a frosty month in Princeton Junction, New Jersey, with average temperature varying between 31.1°F (-0.5°C) and 43°F (6.1°C). In December, the average high-temperature slightly decreases, 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 Junction?

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.

How many days does it rain in Princeton Junction?

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

When does it snow in Princeton Junction?

Months with snowfall in Princeton Junction, New Jersey, are January through May, November and December.

How much does it snow in Princeton Junction?

In Princeton Junction, New Jersey, during the entire year, snow falls for 16.4 days, and aggregates up to 4.41" (112mm) of snow.

What are the months with the lowest UV index in Princeton Junction?

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

What is the month with the least sunshine in Princeton Junction?

With an average of 4.8h of sunshine, February has the least sunshine of the year in Princeton Junction.

What is the snowiest month in Princeton Junction?

The month with the most snowfall 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 Junction?

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

When it does not snow in Princeton Junction?

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

When are the longest days in Princeton Junction?

June has the longest days of the year in Princeton Junction, New Jersey, with an average of 15h of daylight.

What are the months with the highest UV index in Princeton Junction?

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

What is the warmest month in Princeton Junction?

July is the warmest month in Princeton Junction, New Jersey, 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 wettest month in Princeton Junction?

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

What month has the most sunshine in Princeton Junction?

The month with the most sunshine in Princeton Junction is July, with an average of 10.5h of sunshine.

What is the driest month in Princeton Junction?

September is the month with the least rainfall. Rain falls for 10 days and accumulates 0.67" (17mm) of precipitation.

What is the most humid month in Princeton Junction?

With an average relative humidity of 79%, October is the most humid month in Princeton Junction, New Jersey.

What is the month with the shortest days in Princeton Junction?

With an average of 9.4h of daylight, December has the shortest days of the year.
Average temperature - Princeton Junction, NJ
Average pressure - Princeton Junction, NJ

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed - Princeton Junction, NJ

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity - Princeton Junction, NJ
Average rainfall - Princeton Junction, NJ

The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is September (0.67").

Average rainfall days - Princeton Junction, 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 Junction, NJ
Average snowfall days - Princeton Junction, 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 Junction, NJ

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

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 sunshine days - Princeton Junction, NJ

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13.3 days).

Average UV index - Princeton Junction, NJ
Average cloud cover - Princeton Junction, NJ
Average visibility - Princeton Junction, NJ

Months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).