May Weather in Wyoming, United States

Last updated: June 24, 2025

In Wyoming, United States, the average temperature in May is a pleasant 15°C (59°F). However, be prepared for a range, as the minimum can drop to 0°C (32°F) and the maximum can soar up to 35°C (95°F). Expect about 122 mm (4.8 in) of precipitation spread over 11 days, with an average humidity of 78%.

May Temperature in Wyoming

In May in Wyoming, the average temperature is 15°C (59°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 0°C (32°F). It's advisable to pack for a range of temperatures to fully enjoy your travels during this time.

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

The chart illustrates May temperature patterns in Wyoming, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wyoming, May typically has an average temperature of 15°C (59°F), with highs reaching up to 35°C (95°F) and lows dropping to around 0°C (32°F).

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

May Precipitation in Wyoming

In Wyoming in May, the total precipitation amount is 122 mm (4.8 in) over a span of 11 days.

May Precipitation Trends in Wyoming

The chart displays monthly precipitation patterns in Wyoming, 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 Wyoming, May typically receives around 122 mm (4.8 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 Wyoming

In Wyoming in May, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

May Average Humidity in Wyoming

This chart illustrates the average monthly humidity levels in Wyoming, 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 Wyoming is approximately 78%, 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 Wyoming

In Wyoming in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Wyoming.

Maximum UV Index Levels in Wyoming for May

The chart shows the monthly maximum UV Index (UVI) for Wyoming 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 Wyoming typically reaches 8, which falls under the very high exposure category.

Data source: Wyoming 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 Wyoming Compares to Other Months

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

This table compares monthly weather conditions in Wyoming, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	24 mm (0.9 inches)	87%	low
February Weather	-9°C (17°F)	34 mm (1.3 inches)	90%	moderate
March Weather	0°C (33°F)	53 mm (2.1 inches)	85%	moderate
April Weather	6°C (43°F)	90 mm (3.5 inches)	84%	high
May Weather	15°C (59°F)	122 mm (4.8 inches)	78%	very high
June Weather	22°C (71°F)	85 mm (3.3 inches)	80%	very high
July Weather	23°C (74°F)	105 mm (4.1 inches)	81%	very high
August Weather	21°C (71°F)	128 mm (5.1 inches)	81%	very high
September Weather	18°C (64°F)	111 mm (4.4 inches)	81%	high
October Weather	9°C (48°F)	104 mm (4.1 inches)	84%	moderate
November Weather	0°C (33°F)	37 mm (1.4 inches)	88%	moderate
December Weather	-5°C (23°F)	52 mm (2.0 inches)	84%	low