May Weather in Trenton, United States

Last updated: June 24, 2025

In May, the average temperature in Trenton, United States hovers around 22°C (71°F), providing a comfortable climate for visitors. However, be prepared for a range, as temperatures can dip to a chilly 4°C (40°F) at night, and soar to a warm 33°C (92°F) during the day. With 109 mm (4.3 in) of precipitation over an average of 12 days, it's wise to pack an umbrella. The air feels quite humid, with an average humidity of 83%, adding to the overall atmosphere of this vibrant locale. Enjoy your stay!

May Temperature in Trenton

In May in Trenton, the average temperature is 22°C (71°F). Maximums can reach 33°C (92°F), while minimums can drop as low as 4°C (40°F). This makes it a great time for travelers to enjoy a variety of outdoor activities, but it's wise to pack for both warmth and cooler evenings.

May Weather in Trenton: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Trenton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trenton, May typically has an average temperature of 22°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (40°F).

Data source: Temperature data for Trenton generated using information from the Copernicus Climate Change Service.

May Precipitation in Trenton

In Trenton in May, the total precipitation amount is 109 mm (4.3 in) during a span of 12 days.

May Precipitation Trends in Trenton

The chart displays monthly precipitation patterns in Trenton, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Trenton, May typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Trenton

In Trenton in May humidity is 83%. With an average temperature of 22°C (71°F), this humidity feels like a warm blanket wrapping around you, making travel a bit sticky but still enjoyable, as long as you stay hydrated and take breaks in the shade.

May Average Humidity in Trenton

This chart illustrates the average monthly humidity levels in Trenton, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Trenton is approximately 83%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Trenton

In Trenton in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Trenton.

Maximum UV Index Levels in Trenton for May

The chart shows the monthly maximum UV Index (UVI) for Trenton in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Trenton typically reaches 11, which falls under the extreme exposure category.

Data source: Trenton May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How May Weather in Trenton Compares to Other Months

Weather in Trenton varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Trenton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Trenton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	101 mm (4.0 inches)	86%	moderate
February Weather	7°C (44°F)	171 mm (6.7 inches)	85%	high
March Weather	12°C (54°F)	178 mm (7.0 inches)	84%	high
April Weather	15°C (60°F)	147 mm (5.8 inches)	81%	very high
May Weather	22°C (71°F)	109 mm (4.3 inches)	83%	extreme
June Weather	26°C (78°F)	113 mm (4.5 inches)	83%	extreme
July Weather	27°C (81°F)	125 mm (4.9 inches)	80%	extreme
August Weather	26°C (79°F)	104 mm (4.1 inches)	73%	very high
September Weather	24°C (75°F)	103 mm (4.0 inches)	70%	very high
October Weather	17°C (64°F)	118 mm (4.6 inches)	73%	high
November Weather	9°C (49°F)	95 mm (3.7 inches)	85%	moderate
December Weather	7°C (46°F)	137 mm (5.4 inches)	88%	moderate