Weather By Day

December Weather In Rapid City  
December Rapid City Weather
Record High: 75°F
Normal High: 36°F
Normal Low: 13°F
Record Low: -30°F
Avg Monthly Rain: 0.41"
Rec 1 Day Rain: 1.04"
Avg Monthly Snow: 4.9"
Rec 1 Day Snow: 9.8"

Rapid City Weather In December

In the last 68 years the highest measured December temperature in Rapid City was 75 degrees Fahrenheit, most recently measured on December 4, 1965, while the regular high temperature is 36. The coldest December day in Rapid City for the past 68 years was -30 most recently encountered on December 29, 1990, and the regular low is 13.

United States National Weather Service historical Rapid City December Weather data shows that on December 20, 1990, the high temperature did not exceed -15 degrees Fahrenheit, the lowest high measured in Rapid City in the past 68 years. NWS weather data additionally shows that on December 22, 1964, the lowest recorded temperature on that day did not drop below 46 degrees, the highest low measured in Rapid City in the last 68 years.

NWS data indicates that the daily high temperature in Rapid City on December First averages 43 degrees Fahrenheit and the high on the last day of December averages 35 degrees. The low temperature in Rapid City in December on the first day of the month averages 19 degrees and the low temperature on the last day of the month averages 11 degrees.

Rapid City usually receives an average of 0.41 inches of rain during December. December Rapid City Weather records show that on December 31, 1975 Rapid City received 1.04 inches of rain, the most rain measured in a single day in December. Rapid City averages 4.9 inches of snow in December. The most snow measured in a single day in December was 9.8 inches on December 31, 1975.