Quick Reference Climatic Information for Sioux Falls and South Dakota

Selected Quick Reference Climatic Information
 for Sioux Falls and South Dakota

Temperature	Sioux Falls	South Dakota
Record High	110 F Jun 21,1988 Jul 17, 1936	120 F 17 WSW Ft. Pierre Jul 15, 2006 4 NW Gann Valley Jul 5, 1936
Record Low	-42 F Feb 9, 1899	-58 F McIntosh Feb 17, 1936
*Warmest Year*	50.6 in 1931	50.2 1931 State Average
Coldest Year	40.9 in 1917	41.8 1917 State Average
Warmest Month (Warmest Avg High/Low)	84.5 in Jul 1936 (98.9 / 70.2)	87.7 (Pierre) in Jul 1936 84.3 in Jul 1936 State Average
Coldest Month (Coldest Avg High/Low)	0.5 in Feb 1936 (10.9 in Jan 1979 and Dec 1983 -10.9 in Feb 1936)	-11.0 (Pollock) in Feb. 1936 -3.6 in Feb 1936 State Average
*Warmest Summer*	77.8 in 1936	77.6 in 1936 (State Average)
Coldest Summer	63.8 in 1915
Coldest Winter	8.0 in 1978-79	8.6 in 1935-36 (State Average)
Warmest Winter	28.7 in 1930-31

Precipitation	Sioux Falls	South Dakota
Wettest Year	39.54" in 2019	49.52" in 2013 (Lead - Black Hills) / 48.70" in 2019 (Astoria)
Driest Year	10.53" in 1894	2.89" in 1936 (3 SSE Ludlow) 10.91" in 1936 (State Avg.)
Wettest Month	13.70" in Jun 2014	18.61" in May 1946 (Deadwood - Black Hills) 19.75" in June 2014 (Canton)
Driest Month	0.00" in Nov 2014	0.02" in October 1952 (State Avg.)
Wettest Day	5.44" on Aug 7, 2022	8.74" on May 5, 2007 (Groton) - official 14.00" on June 9, 1972 (Nemo) - unofficial

Snowfall	Sioux Falls	South Dakota
Greatest Seasonal	94.7" in 1968/69	364.7" in 1993/94 (Lead - Black Hills) 109.2" in 1968/69 (Clear Lake)
Greatest 24 Hour	26.0" on Feb. 17/18 1962	52.0" on Mar. 14, 1973 (Lead - Black Hills)
Greatest Storm	32.2" Feb 16-18, 1962	112.4" on Feb. 25-Mar. 1, 1998 (Lead - Black Hills)
Earliest Snowfall	( in 24 hours)
Significant (2.0"+)	2.7" Oct 1 1999	4.0" Sep 1 1974 (Deerfield) 5.0" Sep 12-13 1903 (Camp Crook)
Measurable (0.1-1.9")	0.3" Sep 25 1939 0.9" Sep 28 1985 0.1" Sep 28 1945
Trace	Sep 9 2020
Latest Snowfall	( in 24 hours)
Significant (2.0"+)	2.0" May 12 1943	8.0" Jun 18 1973 (Deerfield) 2.0" Jun 2 1951 (Newell)
Measurable (0.1-1.9")	0.1" May 18 1968
Trace	Jun 3 1998

Sioux Falls Miscellaneous Snowfall Records
Maximum Snow Depth		34 inches Dec 31 1968 / Feb 28 1969
Greatest Annual Snowfall (Calendar Yr)		78.2 inches (1983)
Least Annual Snowfall (Calendar Yr.)		9.5 inches (1901)
Latest First Measurable Snowfall for the Season		Jan 8 1945 (0.4 inches)

Sioux Falls Atmospheric Pressure
Highest on Record		31.15 inches on Jan 7 2015
Lowest on Record		28.63 inches on Mar 26 1950

Sioux Falls Monthly Information
Temperature
Month	Record High			Record Low			Warmest Mean		Coldest Mean
Jan	66	24th	1981	-38	12th	1912	31.1	2006	1.8	1979
Feb	70	26th	2024	-42	9th	1899	35.7	2024	0.5	1936
		17th	1982
		22nd	1982
		23rd	1958
Mar	88	30th	1943	-23	11th	1948	49.8	2012	16.9	1899
Apr	98	28th	1910	4	3rd	1936	56.1	1925	37.5	2018
May	104	30th	1934	17	4th	1967	70.4	1934	51.1	1907
Jun	110	21st	1988	32	7th	1901	76.3	1988	61.4	1969
					7th	1893
Jul	110	17th	1936	34	9th	1895	84.5	1936	65.5	1992
Aug	109	24th	1936	34	20th	1950	78.8	1947	63.7	1915
					29th	1893
Sep	104	6th	1976	13	29th	1899	69.9	1908	51.4	1965
		6th	1922
		4-6th	1913
Oct	95	1st	2023	-5	29th	1925	58.8	1938	37.8	1925
Nov	82	6th	2020	-17	30th	1964	43.5	2001	18.2	1896
					14th	1959
Dec	63	1st-3rd	1998	-31	29th	1917	34.0	2023	2.1	1983

Precipitation
Month	Wettest			Driest			Snowiest
Jan	2.23"	1922		T	1901,1900		22.2"	1929
Feb	4.05"	1962		T	1923, 1894		48.4"	1962
Mar	4.97"	2007		.01"	1930		31.5"	1951
Apr	6.97"	2001		.02"	1926		31.4"	2018
May	9.42"	1898		.10"	1934		3.0"	1944
Jun	13.70"	2014		.36"	1893		T	1998
Jul	9.11"	1900		.24"	2012		0
Aug	9.33"	1932		.36"	1907		0
Sep	9.26"	1986		.04"	2024		0.9"	1985
Oct	6.89"	1911		T	1952, 1953		10.0"	1991
Nov	4.76"	2001		0	1914		21.9"	1985
Dec	2.97"	1945		T	1986, 1944, 1905, 1896		41.1"	1968