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May Weather in Trenton, United States

Last updated: June 24, 2025

In May, the average temperature in Trenton, United States is a pleasant 21°C (70°F). Expect minimums dipping to 4°C (39°F) and highs soaring to 33°C (92°F). During this month, prepare for some rain, as precipitation totals 106 mm (4.2 in) spread over about 12 days. Additionally, the average humidity is quite high at 83%, contributing to a warm, tropical feel. Stay ready for varied weather!

May Temperature in Trenton

In May in Trenton, the average temperature is 21°C (70°F). The maximum can reach 33°C (92°F), while the minimum can dip as low as 4°C (39°F). This weather makes Trenton an ideal destination for travelers seeking mild temperatures and a range of outdoor activities.

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 21°C (70°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec434854607075787773645046
Data source: Temperature data for Trenton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Trenton

In Trenton in May, the precipitation amount is 106 mm (4.2 in), occurring over 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 106 mm (4.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec10919118416210614412215012114279150
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Trenton

In Trenton in May humidity is 83%. With an average temperature of 21°C (70°F), this humidity feels like you’re enveloped in a warm, tropical embrace, making it essential to stay hydrated and take breaks during your travels.

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.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
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.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111119764
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.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)109 mm (4.3 inches)87%moderate
February Weather9°C (48°F)191 mm (7.5 inches)87%high
March Weather12°C (54°F)184 mm (7.2 inches)85%very high
April Weather16°C (60°F)162 mm (6.4 inches)82%very high
May Weather21°C (70°F)106 mm (4.2 inches)83%extreme
June Weather24°C (75°F)144 mm (5.7 inches)82%extreme
July Weather26°C (79°F)122 mm (4.8 inches)78%extreme
August Weather25°C (77°F)150 mm (5.9 inches)67%extreme
September Weather23°C (74°F)121 mm (4.8 inches)64%very high
October Weather18°C (64°F)142 mm (5.6 inches)74%high
November Weather10°C (50°F)79 mm (3.1 inches)87%high
December Weather8°C (46°F)150 mm (5.9 inches)88%moderate

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