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May Weather in Cheyenne, United States

Last updated: June 24, 2025

In May, the average temperature in Cheyenne, United States hovers around 20°C (68°F). While you might experience chilly lows of 2°C (37°F), be prepared for the sweltering highs that can reach 36°C (97°F). Additionally, expect 105 mm (4.2 in) of precipitation over 11 days, with an average humidity of 82% adding to the atmosphere. Embrace the diversity of weather this month offers!

May Temperature in Cheyenne

In May in Cheyenne, the average temperature is 20°C (68°F). Maximums can reach 36°C (97°F), while minimums can dip as low as 2°C (37°F). Travelers should be prepared for warm days and cool nights, making layered clothing a wise choice.

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

The chart illustrates May temperature patterns in Cheyenne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cheyenne, May typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (97°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec373851586877818073594842
Data source: Temperature data for Cheyenne 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 Cheyenne

In Cheyenne in May, the total precipitation amount reaches 105 mm (4.2 in) over the course of 11 days.

May Precipitation Trends in Cheyenne

The chart displays monthly precipitation patterns in Cheyenne, 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 Cheyenne, May typically receives around 105 mm (4.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec2618795610573494555731321
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cheyenne

In Cheyenne in May humidity is 82%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit sluggish but surprisingly refreshing, as long as you take breaks in shaded areas to cool off.

May Average Humidity in Cheyenne

This chart illustrates the average monthly humidity levels in Cheyenne, 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 Cheyenne is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cheyenne

In Cheyenne in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Cheyenne.

Maximum UV Index Levels in Cheyenne for May

The chart shows the monthly maximum UV Index (UVI) for Cheyenne 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 Cheyenne typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Cheyenne 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 Cheyenne Compares to Other Months

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

This table compares monthly weather conditions in Cheyenne, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)26 mm (1.0 inches)76%moderate
February Weather4°C (39°F)18 mm (0.7 inches)76%high
March Weather11°C (51°F)79 mm (3.1 inches)70%very high
April Weather14°C (58°F)56 mm (2.2 inches)72%very high
May Weather20°C (68°F)105 mm (4.2 inches)82%extreme
June Weather25°C (78°F)73 mm (2.9 inches)82%extreme
July Weather27°C (81°F)49 mm (1.9 inches)80%extreme
August Weather26°C (80°F)45 mm (1.8 inches)72%extreme
September Weather23°C (74°F)55 mm (2.2 inches)64%very high
October Weather15°C (59°F)73 mm (2.9 inches)71%high
November Weather9°C (48°F)13 mm (0.5 inches)81%moderate
December Weather5°C (42°F)21 mm (0.8 inches)84%moderate

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