Rapid City Downtown, SD: records

4 October 2026: The hottest day on record in Rapid City Downtown, SD: 110°F on Saturday 25 July 2026.

The record begins: 1888

All-time records

Hottest day: 110°F; 25 July 2026
Coldest night: -34°F; 11 February 1899
Wettest day: 5.57 in; 27 May 1926
Warmest night: 80°F; 10 July 1936
Coldest day: -15°F; 7 February 1936, 16 January 1930, 11 January 1912

Daily records by decade

New daily records set in Rapid City Downtown, SD by decade since the 1910s: the most record highs, 157, came in the 1930s; the most record lows, 72, in the 1920s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1880s	0	0	2
1890s	0	0	10
1900s	0	0	10
1910s	33	54	10
1920s	65	72	10
1930s	157	58	10
1940s	53	29	10
1950s	59	42	10
1960s	44	26	10
1970s	5	1	10
1980s	0	0	10
1990s	11	9	10
2000s	45	13	10
2010s	35	6	10
2020s	39	12	7

Records by month

Month	Highest	Lowest	Wettest day
January	73°F 27 January 2015, 8 January 2002	-33°F 17 January 1930, 12 January 1916	0.66 in 27 January 1944
February	74°F 8 February 1954, 10 February 1951, 18 February 1930	-34°F 11 February 1899	0.86 in 14 February 1889
March	85°F 21 March 2026, 22 March 1910	-17°F 3 March 1891	1.98 in 31 March 1927
April	91°F 22 April 2026	-8°F 2 April 1936	3.45 in 13 April 1941
May	99°F 27 May 1969	19°F 3 May 1954, 1 May 1909	5.57 in 27 May 1926
June	106°F 26 June 2012	31°F 3 June 1998, 2 June 1951, 1 June 1951	3.10 in 24 June 1962
July	110°F 25 July 2026	40°F 1 July 1959	2.77 in 22 July 1910
August	106°F 29 August 2012, 14 August 1935, 1 August 1900	36°F 28 August 1911	2.01 in 13 August 1997
September	103°F 4 September 1960, 2 September 1960	15°F 25 September 1926	2.76 in 16 September 1913
October	96°F 1 October 1892	-13°F 28 October 1925	2.63 in 12 October 2023
November	83°F 7 November 1999	-15°F 14 November 1959	1.80 in 4 November 1922
December	79°F 5 December 1939	-28°F 20 December 1916	0.60 in 4 December 1960

Streaks, months and years

Longest heat streak	13 days	10 July to 22 July 1934	A high of 90°F or above
Longest cold streak	31 days	22 January to 21 February 1936	A high of 32°F or below
Wettest month	9.71 in	May 2008
Driest month	a trace	November 1939	and 2 more
Wettest year	31.73 in	2019
Driest year	7.51 in	1936

Every record in words

The coldest night on record in Rapid City Downtown, SD: a low of -34°F on Saturday 11 February 1899.
The wettest day on record in Rapid City Downtown, SD: 5.57 in on Thursday 27 May 1926.
The warmest night on record in Rapid City Downtown, SD: a low of 80°F on Friday 10 July 1936.
The coldest day on record in Rapid City Downtown, SD: a high of -15°F on Friday 7 February 1936, Thursday 16 January 1930 and Thursday 11 January 1912.
The longest run of days with a high of 90°F or above in Rapid City Downtown, SD: 13 days, from Tuesday 10 July to Sunday 22 July 1934.
The longest run of days with a high of 32°F or below in Rapid City Downtown, SD: 31 days, from Wednesday 22 January to Friday 21 February 1936.
The wettest month on record in Rapid City Downtown, SD: May 2008, with 9.71 in of precipitation.
The driest month on record in Rapid City Downtown, SD: November 1939, with a trace of precipitation (shared with 2 other months).
The wettest year on record in Rapid City Downtown, SD: 2019, with 31.73 in of precipitation.
The driest year on record in Rapid City Downtown, SD: 1936, with 7.51 in of precipitation.

Rapid City Downtown, SD the day's answers