National Weather Service United States Department of Commerce

Expanded California Fire Weather Threats; Unsettled Across the West

A storm system will impact the western third of the U.S.. Strong, gusty winds will increase Fire Weather threats across much of western and central California. Rain and mountain snows can be expected across the Pacific Northwest and Northern Rockies, with wintry conditions in the Great Basin and High Plains. Accumulating snows will also continue across the Upper Midwest to the Northeast. Read More >

Labor Day in Sioux Falls

Average High Temperature (period of record):  79 Degrees

Average Low Temperature (period of record):  55 Degrees

Average Temperature (period of record):  67 Degrees

Most Precipitation Recorded: 1.79" on September 6, 1948

Record High Temperature:  104 on September 6, 1976

Record Low Temperature: 36 on September 2, 1974

Coldest High Temperature: 57 on September 6, 1965

Warmest Overnight Low: 72 on September 5, 1960 and September 3, 1990

 

Year

Date

Max

Min

Precip

Snowfall

SOG*

1894
9/3
94
66
0
 
 
1895
9/2
85
59
0
 
 
1896
9/7
85
52
0
 
 
1897
9/6
93
64
 
 
 
1898
9/5
83
49
0.04
 
 
1899
9/4
88
57
T
 
 
1900
9/3
88
51
0
 
 
1901
9/2
88
59
0
 
 
1902
9/1
69
49
0
 
 
1903
9/7
79
61
0.50
 
 
1904
9/5
85
55
0
 
 
1905
9/4
77
39
0
 
 
1906
9/3
83
49
0
 
 
1907
9/2
76
48
0
 
 
1908
9/7
88
52
0
 
 
1909
9/6
69
46
0
 
 
1910
9/5
79
58
0
 
 
1911
9/4
85
60
0
 
 
1912
9/2
82
55
0.15
 
 
1913
9/1
97
67
0
 
 
1914
9/7
68
50
0.19
 
 
1915
9/6
77
60
0
 
 
1916
9/4
91
60
0
 
 
1917
9/3
72
50
0
 
 
1918
9/2
65
56
0.05
 
 
1919
9/1
80
51
0
 
 
1920
9/6
75
45
0
 
 
1921
9/5
78
47
0
 
 
1922
9/4
92
65
0
 
 
1923
9/3
80
58
0
 
 
1924
9/1
70
54
0
 
 
1925
9/7
80
61
0
 
 
1926
9/6
79
61
T
 
 
1927
9/5
80
62
0
 
 
1928
9/3
62
41
T
 
 
1929
9/2
94
62
0
 
 
1930
9/1
80
51
0.28
 
 
1931
9/7
96
67
0.15
 
 
1932
9/5
76
49
0
 
 
1933
9/4
86
65
0
 
 
1934
9/3
62
41
0
 
 
1935
9/2
70
43
0
 
 
1936
9/7
83
57
0.10
 
 
1937
9/6
85
63
0
 
 
1938
9/5
80
68
1.23
 
 
1939
9/4
85
64
0
 
 
1940
9/2
82
57
0
 
 
1941
9/1
89
57
T
 
 
1942
9/7
71
59
T
 
 
1943
9/6
65
43
0
 
 
1944
9/4
75
55
0
 
 
1945
9/3
81
57
T
 
 
1946
9/2
71
44
0
 
 
1947
9/1
87
56
0
 
 
1948
9/6
74
57
1.79
 
 
1949
9/5
69
51
0.12
 
 
1950
9/4
79
43
0
 
 
1951
9/3
67
55
0
 
 
1952
9/1
65
49
0
 
 
1953
9/7
78
42
0
 
 
1954
9/6
80
55
0.01
 
 
1955
9/5
82
42
0
 
 
1956
9/3
73
51
T
 
 
1957
9/2
76
57
T
 
 
1958
9/1
87
50
0
 
 
1959
9/7
95
66
0
 
 
1960
9/5
93
72
0
 
 
1961
9/4
69
48
0.01
 
 
1962
9/3
64
48
0.23
 
 
1963
9/2
75
58
T
 
 
1964
9/7
72
60
1.30
 
 
1965
9/6
57
46
0.09
 
 
1966
9/5
71
50
0
 
 
1967
9/4
79
48
0
 
 
1968
9/2
82
47
0.01
 
 
1969
9/1
80
48
0
 
 
1970
9/7
76
53
T
 
 
1971
9/6
87
55
0
 
 
1972
9/4
74
56
0.13
 
 
1973
9/3
76
62
T
 
 
1974
9/2
61
36
0.02
 
 
1975
9/1
81
63
0
 
 
1976
9/6
104
58
0
 
 
1977
9/5
80
53
0
 
 
1978
9/4
88
61
0
 
 
1979
9/3
84
60
1.65
 
 
1980
9/1
73
56
0
 
 
1981
9/7
77
56
0
 
 
1982
9/6
65
54
T
 
 
1983
9/5
75
56
0.66
 
 
1984
9/3
77
43
0
 
 
1985
9/2
86
58
0.13
 
 
1986
9/1
79
60
0.01
 
 
1987
9/7
81
49
T
 
 
1988
9/5
72
40
0
 
 
1989
9/4
78
57
0.12
 
 
1990
9/3
93
72
0
 
 
1991
9/2
89
68
0
 
 
1992
9/7
65
42
0.57
 
 
1993
9/6
70
46
0
 
 
1994
9/5
73
55
0
 
 
1995
9/4
86
64
0
 
 
1996
9/2
85
67
0.08
 
 
1997
9/1
88
65
0.05
 
 
1998
9/7
75
50
0
 
 
1999
9/6
80
53
T
 
 
2000
9/4
73
58
0.65
 
 
2001
9/3
82
58
0
 
 
2002
9/2
78
55
0
 
 
2003
9/1
78
54
0
 
 
2004
9/6
73
50
0
 
 
2005
9/5
87
64
0.32
 
 
2006
9/4
76
49
0
 
 
2007 9/3 89 60 0    
2008 9/1 89 71 0    
2009 9/7 78 54 0    
2010 9/6 74 54 0.14    
2011 9/5 70 42 0    
2012 9/3 92 60 0.84    
2013 9/2 78 49 0    
2014 9/1 78 60 0.02    
2015 9/7 77 53 0.01    
2016 9/5 81 65 1.46    
2017 9/4 73 53 0    
2018 9/3          


*SOG=Snow On Ground