Weather By Day

December Casper Weather 
December Casper Weather
Record High: 63°F
Normal High: 34°F
Normal Low: 14°F
Record Low: -41°F
Avg Monthly Rain: 0.62"
Rec 1 Day Rain: 1.26"
Avg Monthly Snow: 10.2"
Rec 1 Day Snow: 24.3"

Casper Weather In December

The highest recorded temperature in December for Casper for the past 60 years was 63 degrees Fahrenheit, most recently registered on December 1, 1995, and the standard high is 34. In the last 60 years the lowest measured December temperature in Casper was -41 measured on December 19, 1990, while the typical low recorded temperature is 14.

According to National Weather Service historical Casper December Weather data, on December 21, 1990, the high temperature did not exceed -20 degrees Fahrenheit, the lowest high measured in Casper in the past 60 years. The Weather Service additionally indicates that on December 16, 1980, the low for the day did not drop below 45 degrees, the highest low 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 December First is 39 degrees Fahrenheit and the average high on the last day of December is 33 degrees. The low recorded temperature in Casper on December First averages 18 degrees Fahrenheit and the low temperature on the final day of December averages 13 degrees.

Casper receives an average of 0.62 inches of precipitation during December. The most precipitation recorded on a single day in December, according to December Casper Weather data, was 1.26 inches on December 24, 1982. Casper averages 10.2 inches of snow in December.On December 24, 1982 Casper received 24.3 inches of precipitation, the highest snowfall recorded in a single day in December.