Weather By Day

May Weather In Rapid City  
May Rapid City Weather
Record High: 98°F
Normal High: 67°F
Normal Low: 43°F
Record Low: 18°F
Avg Monthly Rain: 2.96"
Rec 1 Day Rain: 3.21"
Avg Monthly Snow: 0.8"
Rec 1 Day Snow: 7.4"

Rapid City Weather In May

The highest recorded temperature for Rapid City for the past 68 years in May was 98 degrees Fahrenheit, measured on May 27, 1969, while the average high temperature is 67. The lowest documented temperature for Rapid City for the past 68 years in May was 18 measured on May 1, 1950, and the typical low is 43.

United States National Weather Service historical Rapid City May Weather data shows that on May 1, 1954, the high temperature did not exceed 32 degrees Fahrenheit, the lowest high measured in Rapid City in the past 68 years. The Weather Service additionally shows that on May 18, 1948, the low for the day did not drop below 65 degrees, the highest low temperature in Rapid City in the last 68 years.

National Weather Service records indicate that the high temperature in Rapid City on May First averages 62 degrees and the high on the last day of the month averages 70 degrees. The low temperature in Rapid City in May on the first day of the month averages 36 degrees and the low temperature on the last day of the month averages 47 degrees.

Rapid City usually receives an average of 2.96 inches of precipitation during the month. May Rapid City Weather records indicated that on May 14, 1965 Rapid City received 3.21 inches of precipitation, the most rain recorded in a single day in May. Rapid City receives an average of 0.8 inches of snow in May.On May 7, 1950 Rapid City received 7.4 inches of precipitation, the highest snowfall recorded in a single day in May.