May Weather in Cromwell, United States

Last updated: June 24, 2025

In May, the average temperature in Cromwell, United States hovers around 16°C (61°F). However, be prepared for fluctuations, as temperatures can dip to a chilly -2°C (29°F) or soar up to a sizzling 34°C (94°F). Expect 133 mm (5.2 in) of precipitation spread across 15 days, contributing to an average humidity of 81%. Stay ready for the diverse weather that this month brings!

May Temperature in Cromwell

In May in Cromwell, the average temperature is 16°C (61°F). Maximum temperatures can reach up to 34°C (94°F), while minimums can drop as low as -2°C (29°F). This range makes Cromwell an ideal destination for travelers seeking both warm and cool experiences.

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

The chart illustrates May temperature patterns in Cromwell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cromwell, May typically has an average temperature of 16°C (61°F), with highs reaching up to 34°C (94°F) and lows dropping to around -2°C (29°F).

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

May Precipitation in Cromwell

In Cromwell in May, the total precipitation amount is 133 mm (5.2 in) spread over a duration of 15 days.

May Precipitation Trends in Cromwell

The chart displays monthly precipitation patterns in Cromwell, 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 Cromwell, May typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 15 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 Cromwell

In Cromwell in May, humidity is 81%. With an average temperature of 16°C (61°F), this humidity feels like a warm, heavy blanket wrapping around you as you explore the sights, making it essential to stay hydrated and take regular breaks in the shade.

May Average Humidity in Cromwell

This chart illustrates the average monthly humidity levels in Cromwell, 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 Cromwell is approximately 81%, 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 Cromwell

In Cromwell in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Cromwell.

Maximum UV Index Levels in Cromwell for May

The chart shows the monthly maximum UV Index (UVI) for Cromwell 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 Cromwell typically reaches 9, which falls under the very high exposure category.

Data source: Cromwell 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 Cromwell Compares to Other Months

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

This table compares monthly weather conditions in Cromwell, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (28°F)	72 mm (2.8 inches)	85%	moderate
February Weather	-2°C (29°F)	76 mm (3.0 inches)	85%	moderate
March Weather	4°C (39°F)	103 mm (4.0 inches)	86%	high
April Weather	9°C (48°F)	99 mm (3.9 inches)	87%	very high
May Weather	16°C (61°F)	133 mm (5.2 inches)	81%	very high
June Weather	22°C (72°F)	124 mm (4.9 inches)	82%	very high
July Weather	24°C (75°F)	113 mm (4.5 inches)	81%	very high
August Weather	22°C (72°F)	108 mm (4.2 inches)	79%	very high
September Weather	19°C (67°F)	74 mm (2.9 inches)	78%	very high
October Weather	13°C (55°F)	121 mm (4.8 inches)	81%	high
November Weather	4°C (40°F)	82 mm (3.2 inches)	89%	moderate
December Weather	1°C (34°F)	60 mm (2.4 inches)	86%	moderate