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Contents
- The climate of Trenton
- The best time to visit Trenton
- The worst time to visit Trenton
- Spring weather in Trenton
- Summer Weather in Trenton
- Autumn weather in Trenton
- Winter weather in Trenton
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
A full aerial view of Trenton, New Jersey, with the George Washington statue
The climate of Trenton
Trenton, the capital city of New Jersey, USA finds itself positioned in the Köppen climate classification as Cfa, marked by a humid subtropical climate with no dry season. An analysis of the average monthly parameter suggests that the city enjoys a mix of temperate and humid conditions over the year.
Temperature swings are certainly observable with the mercury levels peaking in July, registering an average high of 85.1°F (29.5°C). Contrastingly, January surfaces as the coolest month, recording an average low of 24.8°F (-4°C). Trenton witnesses considerable changes in relative humidity too, although the figures hover around the mid-70s percentile mark throughout the year.
Rainfall seems to be a routine visitor to Trenton, scoring an average of about 2" (51mm) per month, with July seeing the highest rainfall of 3.74" (95mm). Snowfall is less frequent and is majorly restricted to the winter months with January and March clocking in the maximum figures at 1.69" (43mm) and 2.72" (69mm) respectively.
Temperature swings are certainly observable with the mercury levels peaking in July, registering an average high of 85.1°F (29.5°C). Contrastingly, January surfaces as the coolest month, recording an average low of 24.8°F (-4°C). Trenton witnesses considerable changes in relative humidity too, although the figures hover around the mid-70s percentile mark throughout the year.
Rainfall seems to be a routine visitor to Trenton, scoring an average of about 2" (51mm) per month, with July seeing the highest rainfall of 3.74" (95mm). Snowfall is less frequent and is majorly restricted to the winter months with January and March clocking in the maximum figures at 1.69" (43mm) and 2.72" (69mm) respectively.
The best time to visit Trenton
Summers in Trenton are warm with temperatures typically hovering around 70°F (21.1°C) to 85.1°F (29.5°C), with the occasional spike. The period between May and September, when humidity is comparatively more manageable, the visibility is 6 miles on average, daylight lasts for 13 to 15 hours, and average rain falls around 2.68" (68mm) to 3.74" (95mm), is an opportune time to explore the city.
The worst time to visit Trenton
The winter period from November to February, despite offering a charming landscape, could be challenging for some visitors. During these months temperatures dip to between 24.8°F (-4°C) and 40.6°F (4.8°C), daylight is reduced to 9 to 10 hours, and snowfall, though infrequent, is a possibility. Additionally, humidity hovers at the higher end of the scale, nudging the discomfort levels up.
Spring weather in Trenton
The months of March to May typify the Spring season in Trenton and are defined by a steady rise in temperature. Beginning from 33.6°F (0.9°C) in March, the mercury level ascends steadily up to 70.9°F (21.6°C) in May. Rainfall is quite evenly spread across these months, registering around 2.52" (64mm) to 2.91" (74mm). Sunlight graces the city for 12 to 14.4 hours daily, offering a pleasant and comfortable ambiance.
Summer Weather in Trenton
June to August capture the essence of summer in Trenton. These months are distinguished by warm and inviting weather. Temperatures peak in July at 85.1°F (29.5°C) and rest around 70°F (21.1°C), with the humidity largely under control. Sunshine duration hangs between 14.7 hours to 15 hours, providing ample opportunity to indulge in outdoor pursuits.
Autumn weather in Trenton
Fall in Trenton is noted for its gradual dip in temperatures from 76.1°F (24.5°C) in September to 52°F (11.1°C) in November. Rainfall figures range between 2.01" (51mm) to 2.48" (63mm), and daylight hours reduce from 12.4 hours to 10 hours over these months, signaling the arrival of winter.
Winter weather in Trenton
Reporting the coldest month of the year, January, and persisting till February, Winter in Trenton is characterized by low temperatures. The mercury navigates from 43.2°F (6.2°C) in December to 36.9°F (2.7°C) in February. Snowfall, although sporadic, is visible across these months and ranges from 1.3" (33mm) in December to 1.69" (43mm) in January.
Weather in January
January marks the start of a new year and brings with it cold temperatures in Trenton, New Jersey. The month holds the lowest average high and low temperatures, hitting 36.9°F (2.7°C) and 24.8°F (-4°C) respectively. Snow is not a stranger in this part of the country, with an average of 1.69in falling over 4.8 days. Weather in January »
Weather in February
Though temperatures begin to climb slightly, February stays firmly within the winter season. The average high temperature slightly elevates to 40.6°F (4.8°C), but the cold is still prominent, especially during the night. Snowfall continues with a total accumulation of 2.09in throughout the month. Weather in February »
Weather in March
March marks the onset of spring in Trenton, and the city sees a significant uptick in temperature. It becomes noticeably warmer with the average high temperature increasing to 48.7°F (9.3°C). Snowfall is less frequent, totaling just 2.72in for the month. Weather in March »
Weather in April
April sees Trenton comfortably into springtime, and with it, more rainfall. This shift towards wetter weather culminates nearly 2.52in of rainfall spread over 14.4 days. Yet, these showers do not dampen the city's spirits, as temperatures rise to an average high of 60.6°F (15.9°C), heralding the advent of warmer days. Weather in April »
Weather in May
As May rolls in, so does a marked rise in temperatures. It is the transition phase between spring and summer that brings unmistakably warmer weather. The humidity increases to 77%, signifying the shift towards muggy conditions. Interestingly, May records a peak rainfall of 2.91in. Weather in May »
Weather in June
June is the gateway to summer, a season characterized by long, warm days and significantly less precipitation. Sunshine duration reaches its peak, providing nearly 15 hours of daylight each day. Conversely, snowfall is nonexistent during this period. Weather in June »
Weather in July
July is Trenton's warmest month and sits at the height of the summer season. High daily average temperatures reach a toasty 85.1°F (29.5°C), the highest on record for the year. Coupled with relatively low cloud cover, the city enjoys ample sunshine. Weather in July »
Weather in August
August brings slightly cooler temperatures but remains well within the summer envelope. Despite the decline in temperatures, the city registers the highest relative humidity for the year. Rainfall is relatively high this month, with the precipitation accumulating to a significant 3.5in. Weather in August »
Weather in September
September ushers in autumn and bids goodbye to the hot summer weather. Although temperatures decrease, the city stays warm and pleasant. Rainfall lowers to 2.01in, bringing a refreshing change to the preceding humid months. The football season kickoff draws Trenton's crowds, reveling in the comfortable weather conditions. Weather in September »
Weather in October
October brings a noticeable drop in temperatures as Trenton inches closer to winter. The city retreats from the hotter climate, but autumn firmly remains, colored with fall foliage. The rainfall increases to 2.48in, marking the shift towards wetter conditions. Weather in October »
Weather in November
November is the precursor to Trenton's winter season, seeing temperatures drop and rainfall decrease. The average high and low temperatures plummet to 52°F (11.1°C) and 38.1°F (3.4°C) respectively. A revival in snowfall is noted this month, with a total of 0.35in spread across 0.5 days. Weather in November »
Weather in December
December, being the final month of the year, delivers Trenton's trademark cold winters. The city grapples with the freezing temperatures, plunging to an average low of 32°F (0°C). Highs barely cross the mid-40s with a usual maximum of 43.2°F (6.2°C). Weather in December »
Updated: Aug 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
January proves to be the coldest month, recording an average maximum temperature of 36.9°F (2.7°C) and a minimum temperature of 24.8°F (-4°C).
What is the driest month?
January is the month with the least rainfall in Trenton. Rain falls for 7.9 days and accumulates 1.85" (47mm) of precipitation.
How many days does it rain?
Throughout the year, there are 156.8 rainfall days, and 31.81" (808mm) of precipitation is accumulated.
When does it snow?
Months with snowfall in Trenton, New Jersey, are January through May, October through December.
How much does it snow?
In Trenton, during the entire year, snow falls for 16.6 days and aggregates up to 8.86" (225mm) of snow.
When is the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month?
February and October, with an average relative humidity of 78%, are most humid months.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.8h of sunshine.
When does it snow the most?
The month with the most snowfall in Trenton is March, when snow falls for 3.5 days and typically aggregates up to 2.72" (69mm) 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?
The least humid month is April, with an average relative humidity of 72%.
What are the months with the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When it does not snow in Trenton?
June through September are months without snowfall in Trenton.
When are the longest days?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What is the warmest month?
Trenton experiences its highest temperatures in July, with an average peak of 85.1°F (29.5°C) and a low of 67.3°F (19.6°C).
What is the rainiest month?
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?
With an average of 10.6h of sunshine, July has the most sunshine of the year.
What is the month with the shortest days?
With an average of 9h and 24min of daylight, December has the shortest days of the year.
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).
Average pressure
Trenton, NJ
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Trenton, NJ
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.4mph - Average wind speed in September:
5.9mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.5mph - Average wind speed in December:
7.7mph
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).
Average humidity
Trenton, NJ
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall
Trenton, NJ
- Average rainfall in January:
1.85" - Average rainfall in February:
2.13" - Average rainfall in March:
2.6" - Average rainfall in April:
2.52" - Average rainfall in May:
2.91" - Average rainfall in June:
2.68"
- Average rainfall in July:
3.74" - Average rainfall in August:
3.5" - Average rainfall in September:
2.01" - Average rainfall in October:
2.48" - Average rainfall in November:
2.24" - Average rainfall in December:
3.15"
The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days
Trenton, NJ
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
8.5 days - Average rainfall days in March:
12.2 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
18.5 days - Average rainfall days in August:
15.9 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
8 days - Average rainfall days in December:
11.2 days
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).
Average snowfall
Trenton, NJ
- Average snowfall in January:
1.69" - Average snowfall in February:
2.09" - Average snowfall in March:
2.72" - Average snowfall in April:
0.35" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is March (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Trenton, NJ
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.1 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
3 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Trenton, NJ
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 3min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days
Trenton, NJ
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
16.2 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
14.1 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
9.3 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
14 days - Average sunshine days in October:
16.9 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.3 days).
Average UV index
Trenton, NJ
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Trenton, NJ
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility
Trenton, NJ
The 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).
Trenton, New Jersey, USA
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