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May Weather in Wyoming, United States

Last updated: June 24, 2025

In May, the average temperature in Wyoming, United States hovers around 16°C (62°F), offering a pleasant climate. Expect temperatures to vary, with a minimum of -1°C (30°F) and a maximum reaching up to 34°C (93°F). During this period, the region experiences 140 mm (5.5 in) of precipitation spread over 15 days, resulting in an average humidity of 78%. Pack accordingly to enjoy the diverse weather!

May Temperature in Wyoming

In May in Wyoming, the average temperature is 16°C (62°F). Maximums can reach 34°C (93°F) and minimums can be as low as -1°C (30°F). This wide range of temperatures makes it essential for travelers to pack for both warm and cool conditions.

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 16°C (62°F), with highs reaching up to 34°C (93°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec212338486172757267533730
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 140 mm (5.5 in) over a span of 15 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 140 mm (5.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec4959738814011878911281244946
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 78%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities enjoyable yet slightly sticky. Travelers may find the weather pleasantly mild, though they'll appreciate having light, breathable clothing on hand to stay comfortable while exploring.

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.
JanFebMarAprMayJunJulAugSepOctNovDec81%81%81%82%78%81%79%77%78%79%87%84%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098643
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 Weather-6°C (22°F)49 mm (1.9 inches)81%moderate
February Weather-5°C (24°F)59 mm (2.3 inches)81%moderate
March Weather3°C (38°F)73 mm (2.9 inches)81%high
April Weather9°C (48°F)88 mm (3.5 inches)82%very high
May Weather16°C (62°F)140 mm (5.5 inches)78%very high
June Weather22°C (73°F)118 mm (4.6 inches)81%extreme
July Weather24°C (76°F)78 mm (3.1 inches)79%very high
August Weather22°C (72°F)91 mm (3.6 inches)77%very high
September Weather19°C (67°F)127 mm (5.0 inches)78%very high
October Weather11°C (53°F)124 mm (4.9 inches)78%high
November Weather3°C (38°F)49 mm (1.9 inches)87%moderate
December Weather-1°C (31°F)46 mm (1.8 inches)84%moderate

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