May Weather in Billings, United States

Last updated: June 24, 2025

In May, the average temperature in Billings, United States hovers around 13°C (55°F). Expect a typical range with minimums dipping to -2°C (29°F) and maximums soaring up to 31°C (87°F). Rainfall is moderate, with 63 mm (2.5 in) of precipitation spread over 11 days, and the air carries a high average humidity of 76%.

May Temperature in Billings

In May in Billings, the climate can be quite varied, so it's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates May temperature patterns in Billings, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Billings, May typically has an average temperature of 13°C (55°F), with highs reaching up to 31°C (87°F) and lows dropping to around -2°C (29°F).

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

May Precipitation in Billings

In Billings in May, the precipitation amount is 63 mm (2.5 in) during a total of 11 days.

May Precipitation Trends in Billings

The chart displays monthly precipitation patterns in Billings, 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 Billings, May typically receives around 63 mm (2.5 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 Billings

In Billings in May humidity is 76%. With an average temperature of 13°C (55°F), this humidity feels like a damp, heavy blanket enveloping you, making it feel cooler than it actually is, which can be quite refreshing for short excursions but may also lead to discomfort during prolonged outdoor activities.

May Average Humidity in Billings

This chart illustrates the average monthly humidity levels in Billings, 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 Billings is approximately 76%, 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 Billings

In Billings 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 Billings.

Maximum UV Index Levels in Billings for May

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

Data source: Billings 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 Billings Compares to Other Months

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

This table compares monthly weather conditions in Billings, 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 (27°F)	19 mm (0.7 inches)	85%	moderate
February Weather	-6°C (21°F)	43 mm (1.7 inches)	85%	moderate
March Weather	3°C (37°F)	33 mm (1.3 inches)	79%	high
April Weather	7°C (44°F)	66 mm (2.6 inches)	74%	very high
May Weather	13°C (55°F)	63 mm (2.5 inches)	76%	very high
June Weather	19°C (67°F)	53 mm (2.1 inches)	79%	extreme
July Weather	24°C (75°F)	18 mm (0.7 inches)	81%	very high
August Weather	22°C (73°F)	16 mm (0.6 inches)	80%	very high
September Weather	17°C (62°F)	42 mm (1.7 inches)	76%	very high
October Weather	8°C (46°F)	43 mm (1.7 inches)	74%	moderate
November Weather	3°C (37°F)	28 mm (1.1 inches)	81%	moderate
December Weather	-1°C (30°F)	29 mm (1.1 inches)	87%	low