Monthly weather forecast and climate
Trenton, NJ

A full aerial view of Trenton, New Jersey, with the George Washington statue
A full aerial view of Trenton, New Jersey, with the George Washington statue

Weather in January

January, the same as December, is another cold winter month in Trenton, New Jersey, with temperature in the range of an average high of 36.9°F (2.7°C) and an average low of 24.8°F (-4°C). January is the coldest month, with an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 24.8°F (-4°C). Weather in January »

Weather in February

February, the last month of the winter, in Trenton, is another cold month, with average temperature ranging between max 40.6°F (4.8°C) and min 26.6°F (-3°C). In Trenton, the average high-temperature is essentially the same as in January - a still wintry 40.6°F (4.8°C). Weather in February »

Weather in March

March, the first month of the spring, in Trenton, is a chilly month, with average temperature varying between 33.6°F (0.9°C) and 48.7°F (9.3°C). In March, the average high-temperature marginally rises, from a cold 40.6°F (4.8°C) in February, to a chilly 48.7°F (9.3°C). Weather in March »

Weather in April

April in Trenton, New Jersey, is a moderate spring month, with average temperature ranging between min 43.7°F (6.5°C) and max 60.6°F (15.9°C). In Trenton, the average high-temperature in April increases, from a chilly 48.7°F (9.3°C) in March, to a mild 60.6°F (15.9°C). Weather in April »

Weather in May

May, the last month of the spring, in Trenton, is a pleasant month, with average temperature ranging between max 70.9°F (21.6°C) and min 53.6°F (12°C). In May, the average high-temperature rises, from a moderate 60.6°F (15.9°C) in April, to an agreeable 70.9°F (21.6°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Trenton, New Jersey, with average temperature fluctuating between 79.2°F (26.2°C) and 61.2°F (16.2°C). In June, the average high-temperature slightly increases, from an agreeable 70.9°F (21.6°C) in May, to a warm 79.2°F (26.2°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Trenton, New Jersey, with temperature in the range of an average high of 85.1°F (29.5°C) and an average low of 67.3°F (19.6°C). With an average high-temperature of 85.1°F (29.5°C) and an average low-temperature of 67.3°F (19.6°C), July is the warmest month. In July, the average heat index is calculated to a hot 94.5°F (34.7°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Trenton, New Jersey, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 66.4°F (19.1°C). In Trenton, New Jersey, the average high-temperature in August is essentially the same as in July - a still moderately hot 82.9°F (28.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Trenton, New Jersey, with average temperature varying between 59.4°F (15.2°C) and 76.1°F (24.5°C). In September, the average high-temperature marginally drops, from 82.9°F (28.3°C) in August, to a still moderately hot 76.1°F (24.5°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Trenton, New Jersey, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 49.6°F (9.8°C). In October, the average high-temperature drops, from a warm 76.1°F (24.5°C) in September, to an enjoyable 64.2°F (17.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Trenton, New Jersey, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 52°F (11.1°C). In November, the average high-temperature drops, from a comfortable 64.2°F (17.9°C) in October, to a cool 52°F (11.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Trenton, New Jersey, with average temperature varying between 32°F (0°C) and 43.2°F (6.2°C). In December, the average high-temperature marginally drops, from a cool 52°F (11.1°C) in November, to a chilly 43.2°F (6.2°C). Weather in December »
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FAQ

What is the coldest month in Trenton?

With an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 24.8°F (-4°C), January is the coldest month in Trenton.

How many days does it rain in Trenton?

In Trenton, during the entire year, the rain falls for 156.8 days and collects up to 31.81" (808mm) of precipitation.

What is the driest month in Trenton?

January is the month with the least rainfall in Trenton. Rain falls for 7.9 days and accumulates 1.85" (47mm) of precipitation.

When does it snow in Trenton?

Months with snowfall are January through May, October through December.

How much does it snow in Trenton?

In Trenton, New Jersey, during the entire year, snow falls for 16.6 days, and aggregates up to 8.86" (225mm) of snow.

What are the months with the lowest UV index in Trenton?

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

What is the most humid month in Trenton?

Months with the highest humidity in Trenton, New Jersey, are February and October, with an average relative humidity of 78%.

What is the month with the least sunshine in Trenton?

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

When does it snow the most in Trenton?

March is the month with the most snowfall. Snow falls for 3.5 days and accumulates 2.72" (69mm) of snow.

What is the least humid month in Trenton?

With an average relative humidity of 72%, April is the least humid month.

What are the months with the highest UV index in Trenton?

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

When it does not snow in Trenton?

In Trenton, New Jersey, snow does not fall in June through September.

When are the longest days in Trenton?

With an average of 15h of daylight, June has the longest days of the year in Trenton.

What is the warmest month in Trenton?

With an average high-temperature of 85.1°F (29.5°C) and an average low-temperature of 67.3°F (19.6°C), July is the warmest month in Trenton.

What is the rainiest month in Trenton?

July is the month with the most rainfall. Rain falls for 18.5 days and accumulates 3.74" (95mm) of precipitation.

What month has the most sunshine in Trenton?

With an average of 10.6h of sunshine, July has the most sunshine of the year in Trenton.

What is the month with the shortest days in Trenton?

With an average of 9.4h of daylight, December has the shortest days of the year.

Average temperature
Trenton, NJ

Average temperature - Trenton, NJ

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure
Trenton, NJ

Average pressure - Trenton, NJ

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

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Average wind speed
Trenton, NJ

Average wind speed - Trenton, NJ

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity
Trenton, NJ

Average humidity - Trenton, NJ

Months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall
Trenton, NJ

Average rainfall - Trenton, NJ

The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days
Trenton, NJ

Average rainfall days - Trenton, NJ

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall
Trenton, NJ

Average snowfall - Trenton, NJ

The month with the highest snowfall is March (2.72").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Trenton, NJ

Average snowfall days - Trenton, NJ

The month with the highest number of snowfall days is January (4.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Trenton, NJ

Average daylight / Average sunshine - Trenton, 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: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days
Trenton, NJ

Average sunshine days - Trenton, NJ

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.3 days).

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Average UV index
Trenton, NJ

Average UV index - Trenton, NJ

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Trenton, NJ

Average visibility - Trenton, 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).

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