May Weather in Roscommon, United States

Last updated: June 24, 2025

In Roscommon, United States during the month of May, the average temperature hovers around 13°C (56°F). While the mercury can dip as low as -4°C (26°F), it can also soar up to 33°C (91°F). Expect about 107 mm (4.2 in) of precipitation spread over 12 days, contributing to an average humidity of 79%. Plan accordingly for a mix of weather conditions!

May Temperature in Roscommon

In May in Roscommon, the average temperature is 13°C (56°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as -4°C (26°F). Be prepared for a wide range of temperatures, making it essential to pack for both warm days and chilly nights while traveling.

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

The chart illustrates May temperature patterns in Roscommon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roscommon, May typically has an average temperature of 13°C (56°F), with highs reaching up to 33°C (91°F) and lows dropping to around -4°C (26°F).

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

May Precipitation in Roscommon

In Roscommon in May, the precipitation amount is 107 mm (4.2 in) spread over 12 days.

May Precipitation Trends in Roscommon

The chart displays monthly precipitation patterns in Roscommon, 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 Roscommon, May typically receives around 107 mm (4.2 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 Roscommon

In Roscommon in May, humidity is 79%. With an average temperature of 13°C (56°F), this humidity feels like a damp, cool blanket wrapping around you, making traveling slightly uncomfortable and requiring you to dress in layers to stay comfortable while exploring.

May Average Humidity in Roscommon

This chart illustrates the average monthly humidity levels in Roscommon, 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 Roscommon is approximately 79%, 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 Roscommon

In Roscommon 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 Roscommon.

Maximum UV Index Levels in Roscommon for May

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

Data source: Roscommon 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 Roscommon Compares to Other Months

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

This table compares monthly weather conditions in Roscommon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	50 mm (2.0 inches)	92%	low
February Weather	-6°C (21°F)	52 mm (2.1 inches)	91%	moderate
March Weather	-1°C (31°F)	54 mm (2.1 inches)	87%	moderate
April Weather	5°C (42°F)	93 mm (3.7 inches)	85%	very high
May Weather	13°C (56°F)	107 mm (4.2 inches)	79%	very high
June Weather	19°C (66°F)	118 mm (4.6 inches)	75%	very high
July Weather	21°C (71°F)	87 mm (3.4 inches)	75%	very high
August Weather	20°C (68°F)	90 mm (3.6 inches)	75%	very high
September Weather	16°C (61°F)	73 mm (2.9 inches)	79%	high
October Weather	9°C (49°F)	118 mm (4.6 inches)	85%	moderate
November Weather	1°C (35°F)	61 mm (2.4 inches)	88%	moderate
December Weather	-3°C (27°F)	63 mm (2.5 inches)	89%	low