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 >

Mother's Day in Sioux Falls

Average High Temperature (period of record):  68 Degrees

Average Low Temperature (period of record):  44 Degrees

Average Temperature (period of record):  56 Degrees

Most Precipitation Recorded: 1.96" on May 12, 1935

Most Snowfall Recorded:  none!

Record High Temperature:  90 on May 11, 1958 and May 10, 1987

Record Low Temperature: 20 on May 12, 1946

Coldest High Temperature: 43 on May 12, 1996

Warmest Overnight Low: 64 on May 13, 2007

 

Year

Date

Max

Min

Precip

Snowfall

SOG*

1914
5/10
72
45
0
0
M
1915
5/9
70
35
0
0
M
1916
5/14
52
44
1.26
0
M
1917
5/13
72
35
0
0
M
1918
5/12
52
40
0
0
M
1919
5/11
66
52
T
0
M
1920
5/9
79
59
0.06
0
M
1921
5/8
70
55
0.14
0
M
1922
5/14
65
44
T
0
M
1923
5/13
60
40
T
0
M
1924
5/11
73
39
0
0
M
1925
5/10
64
35
0
0
M
1926
5/9
73
58
T
0
M
1927
5/8
70
52
1.17
0
M
1928
5/13
68
42
0
0
M
1929
5/12
65
45
0
0
M
1930
5/11
70
51
0.35
0
M
1931
5/10
45
42
0.05
0
M
1932
5/8
60
45
0.14
0
0
1933
5/14
73
45
T
0
0
1934
5/13
64
45
0
0
0
1935
5/12
65
47
1.96
0
0
1936
5/10
74
53
0.57
0
0
1937
5/9
70
38
0
0
0
1938
5/8
58
38
0
0
0
1939
5/14
75
53
0
0
0
1940
5/12
89
59
T
0
0
1941
5/11
73
41
0.02
0
0
1942
5/10
60
46
1.39
0
0
1943
5/9
65
42
0
0
0
1944
5/14
85
58
0
0
0
1945
5/13
56
36
0.17
0
0
1946
5/12
63
20
0
0
0
1947
5/11
74
54
0
0
0
1948
5/9
49
43
0.37
0
0
1949
5/8
65
51
T
0
0
1950
5/14
72
48
0
0
0
1951
5/13
73
54
0.22
0
0
1952
5/11
62
35
0
0
0
1953
5/10
65
47
1.18
T
0
1954
5/9
62
29
0
0
0
1955
5/8
67
30
T
0
0
1956
5/13
61
44
0.69
0
0
1957
5/12
60
51
0.63
0
0
1958
5/11
90
51
0
0
0
1959
5/10
63
42
T
0
0
1960
5/8
64
31
0
0
0
1961
5/14
61
48
0.39
0
0
1962
5/13
88
61
0.16
0
0
1963
5/12
58
48
0.66
0
0
1964
5/10
78
44
0
0
0
1965
5/9
58
40
0
0
0
1966
5/8
53
36
T
0
0
1967
5/14
62
37
T
0
0
1968
5/12
72
30
0
0
0
1969
5/11
61
33
0.02
0
0
1970
5/10
73
37
0
0
0
1971
5/9
73
43
T
0
0
1972
5/14
64
43
T
0
0
1973
5/13
63
35
T
0
0
1974
5/12
60
40
0
0
0
1975
5/11
72
49
0.11
0
0
1976
5/9
78
47
0
0
0
1977
5/8
79
49
0
0
0
1978
5/14
71
38
0
0
0
1979
5/13
68
40
0.01
0
0
1980
5/11
61
36
0
0
0
1981
5/10
61
25
0
0
0
1982
5/9
79
56
0.01
0
0
1983
5/8
64
32
0
0
0
1984
5/13
70
46
0
0
0
1985
5/12
70
46
0.03
0
0
1986
5/11
78
49
0
0
0
1987
5/10
90
58
T
0
0
1988
5/8
65
44
T
0
0
1989
5/14
78
46
0
0
0
1990
5/13
62
37
0.38
0
0
1991
5/12
86
62
0.23
T
0
1992
5/10
79
62
0.04
0
0
1993
5/9
62
52
0.01
0
0
1994
5/8
71
43
0
0
0
1995
5/14
63
44
0
0
0
1996
5/12
43
38
0.05
0
0
1997
5/11
58
38
T
0
0
1998
5/10
74
49
0.08
0
0
1999
5/9
72
34
0
0
0
2000
5/14
65
36
0
0
0
2001
5/13
81
50
0
0
0
2002
5/12
54
42
T
0
0
2003
5/11
58
40
0.07
0
0
2004
5/9
89
61
0.01
0
0
2005
5/8
78
57
0.02
0
0
2006
5/14
65
47
0.07
0
0
2007 5/13 88 64 0 0 0
2008 5/11 59 34 0 0 0
2009 5/10 60 35 0 0 0
2010 5/9 56 28 T 0 0
2011 5/8 79 54 0.70 0 0
2012 5/13 74 37 0 0 0
2013 5/12 63 26 0 0 0
2014 5/11 62 48 0.75 0 0
2015 5/10 71 42 0.88 0 0
2016 5/8 72 45 T 0 0
2017 5/14 85 59 0 0 0
2018 5/13          


*SOG=Snow On Ground