Weather By Day

May Casper Weather 
May Casper Weather
Record High: 95°F
Normal High: 66°F
Normal Low: 38°F
Record Low: 16°F
Avg Monthly Rain: 2.38"
Rec 1 Day Rain: 2.22"
Avg Monthly Snow: 3.4"
Rec 1 Day Snow: 13"

Casper Weather In May

The hottest day in Casper Wyoming in May for the past 60 years was 95 degrees Fahrenheit, most recently measured on May 29, 2003, while the regular high temperature is 66. The lowest documented temperature in May for Casper for the past 60 years was 16 most recently measured on May 12, 1953, while the average low temperature is 38.

US National Weather Service Casper May Weather data records that on May 2, 1954, the high temperature did not exceed 29 degrees Fahrenheit, the lowest high measured in Casper in the past 60 years. Weather Service records additionally indicate that on May 26, 2003, the low for the day was not measured below 57 degrees, the highest low temperature recorded in Casper in the last 60 years.

Historical weather data accumulated by the National Weather Service shows that the average daily high temperature in Casper on May First is 61 degrees Fahrenheit and the average high on the last day of May is 70 degrees. The low recorded temperature in Casper on May First averages 33 degrees Fahrenheit and the low temperature on the final day of May averages 41 degrees.

Casper typically receives an average of 2.38 inches of rain during the month. The most rain recorded in a single day, as shown by May Casper Weather data, was 2.22 inches on May 17, 2000. Casper averages 3.4 inches of snow in May. The highest snowfall on a single day in May was 13 inches on May 4, 1978.