May Weather in Morristown, United States

Last updated: June 24, 2025

In Morristown, United States, the average temperature in May hovers around 20°C (68°F). Expect a temperature range where the minimum can dip to 2°C (36°F) and the maximum can reach up to 33°C (91°F). During this month, you can anticipate precipitation of approximately 109 mm (4.3 in) spread over about 12 days, contributing to an average humidity of 84%. Stay prepared for a mix of mild warmth and moisture!

May Temperature in Morristown

In May in Morristown, the average temperature is 20°C (68°F), with maximums reaching 33°C (91°F) and minimums dropping as low as 2°C (36°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities, while also being prepared for cooler evenings.

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 20°C (68°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (36°F).

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

May Precipitation in Morristown

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

In Morristown in May humidity is 84%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket, making travel a challenge as the air clings to your skin, and every step feels heavier in the mugginess.

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 84%, 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 Morristown

In Morristown 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 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 11, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	89 mm (3.5 inches)	88%	moderate
February Weather	7°C (45°F)	154 mm (6.1 inches)	88%	high
March Weather	10°C (51°F)	137 mm (5.4 inches)	87%	very high
April Weather	14°C (58°F)	130 mm (5.1 inches)	84%	very high
May Weather	20°C (68°F)	109 mm (4.3 inches)	84%	extreme
June Weather	23°C (74°F)	106 mm (4.2 inches)	83%	extreme
July Weather	26°C (78°F)	101 mm (4.0 inches)	79%	extreme
August Weather	25°C (77°F)	104 mm (4.1 inches)	66%	very high
September Weather	23°C (73°F)	83 mm (3.3 inches)	67%	very high
October Weather	17°C (62°F)	123 mm (4.8 inches)	76%	high
November Weather	9°C (48°F)	76 mm (3.0 inches)	89%	moderate
December Weather	6°C (44°F)	122 mm (4.8 inches)	88%	moderate