Lowest May Temperatures in Rapid City

A list of the lowest temperatures ever recorded in the month of May in Rapid City, South Dakota from 1948–2024.
What's the coldest it has ever gotten in Rapid City in May?
The coldest May temperature in Rapid City, South Dakota history was 18 °F which occurred on May 1, 1950.
Rank Temperature Date
1 18 °F May 1, 1950
2 19 °F May 3, 1954
3 20 °F May 3, 2005
4 21 °F May 2, 2019
4 21 °F May 8, 2010
6 22 °F May 2, 2005
6 22 °F May 1, 1990
6 22 °F May 2, 1976
6 22 °F May 12, 1953
10 23 °F May 24, 2002
10 23 °F May 2, 1954
10 23 °F May 11, 1953
13 24 °F May 22, 2022
13 24 °F May 16, 2009
13 24 °F May 2, 2004
13 24 °F May 23, 2002
13 24 °F May 10, 1990
13 24 °F May 2, 1967
13 24 °F May 1, 1967
20 25 °F May 1, 2023
20 25 °F May 10, 2020
20 25 °F May 14, 2016
20 25 °F May 4, 2013
20 25 °F May 3, 2013
20 25 °F May 2, 2013
20 25 °F May 7, 2010
20 25 °F May 20, 2003
20 25 °F May 9, 2002
20 25 °F May 1, 1991
20 25 °F May 1, 1984