First Day of Spring in Sioux Falls

Year
Date
Max
Min
Precip
Snowfall
SOG
1903
3/21
45
16
0
0
M
1904
3/20
47
19
0
0
M
1905
3/21
61
30
0
0
M
1906
3/21
36
17
0
0
M
1907
3/21
75
40
0
0
M
1908
3/20
49
24
0
0
M
1909
3/21
38
30
0
0
M
1910
3/21
83
40
0
0
M
1911
3/21
75
39
0
M
M
1912
3/20
32
12
0.23
M
M
1913
3/20
22
0
T
0
M
1914
3/21
36
10
T
0
M
1915
3/21
33
17
T
0
M
1916
3/20
65
30
0
0
M
1917
3/20
42
19
0
0
M
1918
3/21
60
41
0
M
M
1919
3/21
42
31
0
0
M
1920
3/20
45
35
0
0
M
1921
3/20
60
33
0.54
0
M
1922
3/21
36
17
0
0
M
1923
3/21
46
26
0.77
6.5
M
1924
3/20
43
29
0
0
M
1925
3/20
61
36
0
0
M
1926
3/21
61
38
0
0
M
1927
3/21
37
7
0
0
M
1928
3/20
57
27
0
M
M
1929
3/20
58
30
0
0
M
1930
3/21
34
17
0
0
M
1931
3/21
43
34
T
0
M
1932
3/20
27
20
0.6
5
M
1933
3/20
25
8
0
0
M
1934
3/21
60
23
0
0
0
1935
3/21
65
33
0
0
0
1936
3/20
57
31
0
0
0
1937
3/20
45
23
0
0
0
1938
3/21
65
49
0
0
0
1939
3/21
74
40
0
0
0
1940
3/20
34
20
0.03
0.5
M
1941
3/20
37
28
0
0
M
1942
3/21
44
23
0
0
2
1943
3/21
37
8
0
0
3
1944
3/20
42
20
0
0
M
1945
3/20
54
28
0
0
0
1946
3/20
62
38
0
0
0
1947
3/21
38
26
T
T
0
1948
3/20
59
32
0.03
T
0
1949
3/20
56
28
0
0
0
1950
3/20
33
25
0.08
1.1
2
1951
3/21
26
-11
0
0
23
1952
3/20
34
27
T
T
1
1953
3/20
65
41
0.03
0
0
1954
3/20
38
25
0
0
0
1955
3/21
24
7
0.02
0.4
2
1956
3/20
48
28
0
0
3
1957
3/20
45
7
0
0
12
1958
3/20
34
18
0
0
T
1959
3/21
38
14
0
0
0
1960
3/20
30
6
0
0
9
1961
3/20
40
32
T
T
0
1962
3/20
39
17
0
0
16
1963
3/21
46
19
0
0
T
1964
3/20
32
12
0.16
1.1
4
1965
3/20
18
-2
T
T
5
1966
3/20
59
31
0
0
0
1967
3/21
53
21
0
0
0
1968
3/20
35
19
0
0
T
1969
3/20
32
19
0.04
0.4
21
1970
3/20
36
20
T
T
12
1971
3/21
35
28
T
T
4
1972
3/20
54
39
0.07
0
0
1973
3/20
50
25
0
0
0
1974
3/20
27
5
0.16
1.9
2
1975
3/20
50
33
0
0
0
1976
3/20
52
28
0.01
0
0
1977
3/20
32
16
0.09
0.8
0
1978
3/20
44
32
T
0
T
1979
3/20
47
32
0
0
T
1980
3/20
46
25
T
T
0
1981
3/20
45
11
0
0
0
1982
3/20
37
26
0.03
0.4
T
1983
3/20
28
20
T
T
5
1984
3/20
36
15
T
T
6
1985
3/20
62
29
0
0
0
1986
3/20
28
5
T
T
3
1987
3/20
63
45
0.13
0
0
1988
3/20
54
23
0
0
0
1989
3/20
33
12
0
0
T
1990
3/20
68
32
0
0
0
1991
3/20
61
40
0.19
0
0
1992
3/20
45
32
0
0
0
1993
3/20
35
26
0
0
0
1994
3/20
44
31
0.14
0.5
0
1995
3/20
43
26
0.01
T
0
1996
3/20
42
18
0
0
0
1997
3/20
57
28
0
0
2
1998
3/20
42
21
0
0
0
1999
3/20
51
28
0
0
0
2000
3/20
37
31
0
0
0
2001
3/20
48
32
T
0
3
2002
3/20
36
7
T
0.1
4
2003
3/20
52
32
T
0
0
2004
3/20
50
24
0
0
0
2005
3/20
35
13
0
0
8
2006
3/20
32
28
0.02
0.3
2
2007 3/20 48 27 T 0 0
2008 3/19 47 25 0.03 0 0
2009 3/20 59 37 T 0 0
2010 3/20 38 20 0 0 T
2011 3/20          
2012 3/19          


*SOG=Snow On Ground


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