Up-to-date through December 2022
This web page contains historical UV index data for Cheyenne, WY. The UV index data is for the years between 1994 and 2022. We provide you with the monthly average UV index and the daily average UV index for the selected year. You can also scroll to the bottom of this web page to view notable UV index data stats for Cheyenne, WY over the last 28 years.
Select a year in the below dropdown menu.
Over the last 28 years, the month with the highest UV index average was July, with an average UV index of 11.5. The highest recorded UV index for Cheyenne, WY was 12.84 on June 18, 2016. The year with the most months reaching extreme UV index levels was 2020 with 3 months (May, June, July).