May Weather in Basalt, United States

Last updated: June 24, 2025

In Basalt, United States, the average temperature in May hovers around 4°C (40°F). Expect a wide range, with the minimum dipping to -11°C (12°F) and the maximum reaching up to 22°C (71°F). During this month, you can anticipate 61 mm (2.4 in) of precipitation over approximately 11 days, accompanied by an average humidity level of 66%. Stay prepared for the varied climate!

May Temperature in Basalt

In May in Basalt, the average temperature is 4°C (40°F), with maximums reaching up to 22°C (71°F) and minimums dropping as low as -11°C (12°F). Travelers should be prepared for a wide range of temperatures, making layering clothing essential for comfort.

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

The chart illustrates May temperature patterns in Basalt, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Basalt, May typically has an average temperature of 4°C (40°F), with highs reaching up to 22°C (71°F) and lows dropping to around -11°C (12°F).

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

May Precipitation in Basalt

In Basalt in May, the total precipitation amount is 61 mm (2.4 in) over the course of 11 days.

May Precipitation Trends in Basalt

The chart displays monthly precipitation patterns in Basalt, 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 Basalt, May typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 11 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 Basalt

In Basalt in May, humidity is 66%. With an average temperature of 4°C (40°F), this humidity feels like a damp blanket wrapping around you, making your travels feel chillier and more uncomfortable, especially as the moisture settles in the air.

May Average Humidity in Basalt

This chart illustrates the average monthly humidity levels in Basalt, 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 Basalt is approximately 66%, 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 Basalt

In Basalt in May, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Basalt.

Maximum UV Index Levels in Basalt for May

The chart shows the monthly maximum UV Index (UVI) for Basalt 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 Basalt typically reaches 13, which falls under the extreme exposure category.

Data source: Basalt 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 Basalt Compares to Other Months

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

This table compares monthly weather conditions in Basalt, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	61 mm (2.4 inches)	88%	moderate
February Weather	-7°C (20°F)	81 mm (3.2 inches)	87%	high
March Weather	-2°C (28°F)	85 mm (3.3 inches)	81%	very high
April Weather	0°C (33°F)	66 mm (2.6 inches)	76%	extreme
May Weather	4°C (40°F)	61 mm (2.4 inches)	66%	extreme
June Weather	12°C (53°F)	32 mm (1.3 inches)	58%	extreme
July Weather	16°C (60°F)	46 mm (1.8 inches)	52%	extreme
August Weather	15°C (59°F)	30 mm (1.2 inches)	56%	extreme
September Weather	11°C (52°F)	35 mm (1.4 inches)	65%	very high
October Weather	2°C (36°F)	67 mm (2.6 inches)	76%	high
November Weather	-4°C (24°F)	53 mm (2.1 inches)	82%	moderate
December Weather	-9°C (17°F)	69 mm (2.7 inches)	89%	moderate