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May Weather in Trenton, United States

Last updated: June 24, 2025

In Trenton, United States, the average temperature in May hovers around 18°C (65°F), with a notable minimum of 3°C (38°F) and a potential peak of 35°C (96°F). Expect precipitation of approximately 181 mm (7.1 in) spread over about 15 days, accompanied by an average humidity level of 82%. Get ready for a month of varied weather!

May Temperature in Trenton

In May in Trenton, the average temperature is 18°C (65°F). Maximum temperatures can reach 35°C (96°F), while minimum temperatures can drop as low as 3°C (38°F). Overall, it's a month that offers a diverse range of temperatures, making it ideal for travelers who enjoy both warm and cooler weather.

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 18°C (65°F), with highs reaching up to 35°C (96°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec283044526576797570554235
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 181 mm (7.1 in) spread over 15 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 181 mm (7.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec564610485181142110103961375334
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 82%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can quickly leave travelers feeling fatigued and in need of frequent breaks to stay refreshed and hydrated.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
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 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
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 Weather-2°C (28°F)56 mm (2.2 inches)80%moderate
February Weather-1°C (30°F)46 mm (1.8 inches)78%moderate
March Weather7°C (44°F)104 mm (4.1 inches)75%high
April Weather11°C (53°F)85 mm (3.4 inches)77%very high
May Weather18°C (65°F)181 mm (7.1 inches)82%very high
June Weather24°C (76°F)142 mm (5.6 inches)83%extreme
July Weather26°C (79°F)110 mm (4.3 inches)81%extreme
August Weather24°C (76°F)103 mm (4.1 inches)78%very high
September Weather21°C (71°F)96 mm (3.8 inches)72%very high
October Weather13°C (56°F)137 mm (5.4 inches)72%high
November Weather5°C (42°F)53 mm (2.1 inches)84%moderate
December Weather2°C (36°F)34 mm (1.3 inches)86%moderate

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