Climate and monthly weather forecast
Trenton, PA

Share

Weather in January

January, the same as December, in Trenton, Pennsylvania, is another subzero cold winter month, with temperature in the range of an average low of 19.8°F (-6.8°C) and an average high of 31.6°F (-0.2°C). January, on average, is the coldest month, registering a high temperature of 31.6°F (-0.2°C) and a low of 19.8°F (-6.8°C). Weather in January »

Weather in February

The last month of the winter, February, is a wintry month in Trenton, Pennsylvania, with temperature in the range of an average low of 21.9°F (-5.6°C) and an average high of 35.6°F (2°C). Entering February, Trenton's average high-temperature reads a wintry 35.6°F (2°C), indicating a close resemblance to the previous month's climate. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Trenton, Pennsylvania, with an average temperature varying between 29.1°F (-1.6°C) and 44.2°F (6.8°C). The commencement of March sees a minor shift in the average high-temperature, moving from a wintry 35.6°F (2°C) in February to a frosty 44.2°F (6.8°C). Weather in March »

Weather in April

April in Trenton, Pennsylvania, is a refreshing spring month, with temperature in the range of an average low of 39.6°F (4.2°C) and an average high of 56.8°F (13.8°C). April witnesses an increase in the average high-temperature, moving from a chilly 44.2°F (6.8°C) in March to a refreshing 56.8°F (13.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a refreshing month in Trenton, Pennsylvania, with temperature in the range of an average high of 67.6°F (19.8°C) and an average low of 49.6°F (9.8°C). The arrival of May brings a change in Trenton's weather, with average high-temperatures moving from April's mild 56.8°F (13.8°C) to a still refreshing 67.6°F (19.8°C). Weather in May »

Weather in June

June, the first month of the summer in Trenton, is a warm month, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 75.2°F (24°C). As Trenton transitions into June, a marginal rise in the average high-temperature is observed, moving from a comfortable 67.6°F (19.8°C) in May to a warm 75.2°F (24°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Trenton, Pennsylvania, with an average temperature fluctuating between 81°F (27.2°C) and 61.5°F (16.4°C). July stands out as Trenton's warmest month, with an average high-temperature of 81°F (27.2°C) and a low-temperature of 61.5°F (16.4°C). The heat index value for July is calculated to be a tropical 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Trenton, Pennsylvania, with an average temperature ranging between max 78.4°F (25.8°C) and min 60.1°F (15.6°C). The onset of August notes an average high-temperature of a still moderately hot 78.4°F (25.8°C), subtly shifted from July's 81°F (27.2°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Trenton, Pennsylvania, with an average temperature ranging between min 54°F (12.2°C) and max 72.7°F (22.6°C). September's onset brings a negligible change in high-temperatures, falling from a warm 78.4°F (25.8°C) in August to an agreeable 72.7°F (22.6°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Trenton, Pennsylvania, with temperature in the range of an average high of 59.9°F (15.5°C) and an average low of 44.4°F (6.9°C). October brings a decrease in the average high-temperature, shifting from a pleasant 72.7°F (22.6°C) in September to a moderate 59.9°F (15.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Trenton, Pennsylvania, with an average temperature fluctuating between 47.3°F (8.5°C) and 33.4°F (0.8°C). The start of November signals a decrease in the average high-temperature, transitioning from a refreshing 59.9°F (15.5°C) in October to a chilly 47.3°F (8.5°C). Weather in November »

Weather in December

December, the first month of the winter in Trenton, is also an icy month, with temperature in the range of an average high of 37.9°F (3.3°C) and an average low of 27.5°F (-2.5°C). December's arrival correlates with a reduction in the average high-temperature, down from a chilly 47.3°F (8.5°C) in November to a cold 37.9°F (3.3°C). Weather in December »
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Trenton?

January is the coldest month, with the temperature often reaching an average high of 31.6°F (-0.2°C) and an average low of 19.8°F (-6.8°C).

How many days does it rain?

In Trenton, during the entire year, the rain falls for 139.8 days and collects up to 24.69" (627mm) of precipitation.

When does it snow?

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

How many days does it snow?

Throughout the year, in Trenton, there are 33.6 snowfall days, and 20.67" (525mm) of snow is accumulated.

What are the months with the least sunshine in Trenton?

The months with the least sunshine are January and February, with an average of 4.3h of sunshine.

What is the month with the lowest UV index in Trenton?

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

What is the most humid month?

February is the most humid month, with an average relative humidity of 83%.

What is the snowiest month?

March is the month with the most snowfall in Trenton. Snow falls for 6.9 days and accumulates 4.96" (126mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month?

April is the least humid month, with an average relative humidity of 77%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 17.2 days and accumulates 2.72" (69mm) of precipitation.

When it does not snow?

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

When are the longest days?

June has the longest days of the year, with an average of 15h and 6min of daylight.

When is the highest UV index in Trenton?

June is the month with the highest UV index, with an average maximum UV index of 6.

What month is the hottest?

July is the warmest month, with the temperature often reaching an average high of 81°F (27.2°C) and an average low of 61.5°F (16.4°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.4h of sunshine.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.57" (40mm) of precipitation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

Average temperature
Trenton, PA

Average temperature - Trenton, PA

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure
Trenton, PA

Average pressure - Trenton, PA

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Trenton, PA

Average wind speed - Trenton, PA

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity
Trenton, PA

Average humidity - Trenton, PA

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

Average rainfall
Trenton, PA

Average rainfall - Trenton, PA

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days
Trenton, PA

Average rainfall days - Trenton, PA

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (5.8 days).

Average snowfall
Trenton, PA

Average snowfall - Trenton, PA

The month with the highest snowfall is March (4.96").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Trenton, PA

Average snowfall days - Trenton, PA

The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Trenton, PA

Average daylight / Average sunshine - Trenton, PA

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).

Average sunshine days
Trenton, PA

Average sunshine days - Trenton, PA

The months with the most sunshine days are January and November (19.6 days).
The month with the least sunshine days is May (11.2 days).

Average UV index
Trenton, PA

Average UV index - Trenton, PA

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average visibility
Trenton, PA

Average visibility - Trenton, PA

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

Trenton, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location