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May Weather in Morristown, United States

Last updated: June 24, 2025

In May, the average temperature in Morristown, United States is a comfortable 18°C (65°F). However, temperatures can vary significantly, with minimums dropping to -1°C (30°F) and maximums soaring to 33°C (92°F). Expect 136 mm (5.4 in) of precipitation over 14 days, contributing to an average humidity of around 79%. Prepare accordingly!

May Temperature in Morristown

In May in Morristown, the weather can be quite varied, offering a pleasant average temperature of 18°C (65°F) ideal for outdoor activities, but travelers should be prepared for maximum highs of 33°C (92°F) and potential chilly lows of -1°C (30°F), making it essential to pack accordingly.

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

The chart illustrates May temperature patterns in Morristown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Morristown, May typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec303443526473767470584236
Data source: Temperature data for Morristown 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 Morristown

In Morristown in May, the precipitation amount is 136 mm (5.4 in) over a span of 14 days.

May Precipitation Trends in Morristown

The chart displays monthly precipitation patterns in Morristown, 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 Morristown, May typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec8310013410213610511292881029887
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Morristown

In Morristown in May, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

May Average Humidity in Morristown

This chart illustrates the average monthly humidity levels in Morristown, 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 Morristown is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Morristown

In Morristown 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 Morristown.

Maximum UV Index Levels in Morristown for May

The chart shows the monthly maximum UV Index (UVI) for Morristown 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 Morristown typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Morristown 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 Morristown Compares to Other Months

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

This table compares monthly weather conditions in Morristown, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)83 mm (3.3 inches)87%moderate
February Weather1°C (34°F)100 mm (3.9 inches)85%moderate
March Weather6°C (43°F)134 mm (5.3 inches)86%high
April Weather11°C (53°F)102 mm (4.0 inches)84%very high
May Weather18°C (65°F)136 mm (5.4 inches)79%very high
June Weather23°C (73°F)105 mm (4.1 inches)82%extreme
July Weather25°C (77°F)112 mm (4.4 inches)79%very high
August Weather23°C (74°F)92 mm (3.6 inches)70%very high
September Weather21°C (70°F)88 mm (3.5 inches)69%very high
October Weather14°C (58°F)102 mm (4.0 inches)76%high
November Weather5°C (42°F)98 mm (3.9 inches)88%moderate
December Weather2°C (36°F)86 mm (3.4 inches)87%moderate

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