Earliest and Latest Days of 100° F in Rapid City

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Rapid City, South Dakota history. It is based on NOAA data from the years 1948–2024.

Also see:

Earliest 100 degree day in Rapid City?

The earliest in the year that Rapid City, South Dakota had a high temperature of at least 100 °F is June 6 which happened in 2004.

Latest 100 degree day in Rapid City?

The latest in the year that Rapid City, South Dakota had a high temperature of at least 100 °F is September 17 which happened in 2000.

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 6	2004	102 °F
June 7	1988	104 °F
June 11	2016	103 °F
June 11	1956	101 °F
June 13	1979	103 °F
June 14	2018	105 °F
June 14	2006	102 °F
June 16	1989	101 °F
June 18	1988	102 °F
June 19	1989	102 °F
June 20	1988	104 °F
June 20	1974	100 °F
June 21	1988	103 °F
June 23	2007	102 °F
June 24	2007	104 °F
June 24	2001	100 °F
June 24	1988	106 °F
June 26	2012	109 °F
June 26	1980	100 °F
June 26	1974	105 °F
June 26	1961	100 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 17	2000	101 °F
September 15	1948	103 °F
September 14	1948	100 °F
September 10	2012	100 °F
September 9	1998	100 °F
September 9	1994	102 °F
September 9	1979	102 °F
September 8	1959	103 °F
September 6	1978	104 °F
September 6	1976	100 °F
September 5	2020	104 °F
September 5	2002	100 °F
September 5	2000	100 °F
September 5	1978	101 °F
September 4	2001	103 °F
September 4	1998	100 °F
September 4	1978	100 °F
September 4	1960	104 °F
September 3	2005	100 °F
September 3	1948	100 °F