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May Weather in Wyoming, United States

Last updated: June 24, 2025

In Wyoming, United States, the average temperature in May hovers around 19°C (66°F), with a range of 0°C (33°F) to 33°C (92°F). Expect about 127 mm (5.0 in) of precipitation spread over 14 days, contributing to an average humidity of 81%. Be prepared for a mix of comfortable and cooler days!

May Temperature in Wyoming

In May in Wyoming, the average temperature is 19°C (66°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 0°C (33°F). This diverse climate makes Wyoming an ideal destination for travelers seeking a mix of warm and cool experiences.

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 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec333745546674787571594439
Data source: Temperature data for Wyoming generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Wyoming

In Wyoming in May, the total precipitation amount is 127 mm (5.0 in), occurring over the course of 14 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 127 mm (5.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec8010713711912713111089819699110
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Wyoming

In Wyoming in May, humidity is 81%. With an average temperature of 19°C (66°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel both muggy and slightly stifling, often leading to a need for frequent breaks in the shade.

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 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
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.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)80 mm (3.2 inches)88%moderate
February Weather3°C (37°F)107 mm (4.2 inches)88%moderate
March Weather7°C (45°F)137 mm (5.4 inches)87%high
April Weather12°C (55°F)119 mm (4.7 inches)85%very high
May Weather19°C (66°F)127 mm (5.0 inches)81%very high
June Weather23°C (74°F)131 mm (5.2 inches)82%very high
July Weather25°C (78°F)110 mm (4.3 inches)81%very high
August Weather24°C (75°F)89 mm (3.5 inches)73%very high
September Weather21°C (71°F)81 mm (3.2 inches)73%very high
October Weather15°C (59°F)96 mm (3.8 inches)78%high
November Weather7°C (44°F)99 mm (3.9 inches)89%moderate
December Weather4°C (39°F)110 mm (4.3 inches)87%moderate

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