Updated Nov 2022.
Chicago
Official weather records for Chicago date back to 1871 for temperatures and precipitation, and to 1884 for snowfall. Observation location history for Chicago can be found here.
Halloween Climate Data for Chicago |
Top 10 Warmest (Highs) | Top 10 Coldest (Highs) | |||||
1 | 1950 | 84 | 1 | 1873 | 31 | |
2 | 1944 | 79 | 2 | 1917 | 32 | |
3 | 1935 | 78 | 3 | 2019 | 33 | |
1933 | 78 | 4 | 1878 | 37 | ||
5 | 1974 | 77 | 5 | 1930 | 39 | |
1968 | 77 | 1906 | 39 | |||
7 | 1915 | 76 | 1874 | 39 | ||
1888 | 76 | 8 | 2017 | 40 | ||
9 | 1900 | 75 | 1996 | 40 | ||
10 | 1909 | 74 | 1954 | 40 | ||
Top 10 Warmest (Lows) | Top 10 Coldest (Lows) | |||||
1 | 1974 | 65 | 1 | 1873 | 23 | |
2 | 1900 | 61 | 2 | 1917 | 24 | |
3 | 1933 | 59 | 3 | 2019 | 25 | |
4 | 1950 | 58 | 1993 | 25 | ||
1927 | 58 | 5 | 1996 | 26 | ||
6 | 1909 | 56 | 1988 | 26 | ||
7 | 1956 | 55 | 1923 | 26 | ||
1876 | 55 | 8 | 1913 | 27 | ||
9 | 1998 | 54 | 9 | 1925 | 28 | |
1997 | 54 | 1890 | 28 | |||
Top 10 Wettest | Top 10 Snowiest | |||||
1 | 1994 | 2.26 | 1 | 2019 | 3.4 | |
2 | 1941 | 1.27 | 2 | 2014 | 0.1 | |
3 | 2013 | 1.04 | 3 | 1993 | Trace | |
4 | 2015 | 0.77 | 1955 | Trace | ||
5 | 1912 | 0.75 | 1926 | Trace | ||
6 | 1973 | 0.65 | 1918 | Trace | ||
7 | 1935 | 0.62 | 1917 | Trace | ||
8 | 1987 | 0.59 | ||||
9 | 1960 | 0.55 | ||||
10 | 1892 | 0.50 | ||||
Percent of Years (Precip) |
Percent of Years (Snow) |
|||||
>0 | 49% | >0 | 5% | |||
>=0.01 | 35% | >=0.1 | 1% | |||
>=0.1 | 20% | |||||
>=0.5 | 7% | |||||
>=1 | 2% |
Chicago Yearly
Year
|
High Temp
|
Min Temp
|
Precip
|
Snow
|
1872
|
48
|
39
|
0.00
|
M
|
1873
|
31
|
23
|
0.02
|
M
|
1874
|
39
|
30
|
0.00
|
M
|
1875
|
41
|
30
|
0.00
|
M
|
1876
|
73
|
55
|
0.16
|
M
|
1877
|
53
|
37
|
0.00
|
M
|
1878
|
37
|
28
|
0.12
|
M
|
1879
|
42
|
28
|
0.00
|
M
|
1880
|
52
|
34
|
0.00
|
M
|
1881
|
54
|
47
|
0.00
|
M
|
1882
|
67
|
52
|
0.38
|
M
|
1883
|
50
|
38
|
0.00
|
M
|
1884
|
55
|
40
|
T
|
M
|
1885
|
49
|
40
|
0.34
|
0.0
|
1886
|
68
|
45
|
0.00
|
0.0
|
1887
|
49
|
30
|
0.00
|
0.0
|
1888
|
76
|
52
|
0.00
|
0.0
|
1889
|
48
|
44
|
0.17
|
0.0
|
1890
|
41
|
28
|
0.00
|
0.0
|
1891
|
52
|
42
|
0.00
|
0.0
|
1892
|
49
|
42
|
0.50
|
0.0
|
1893
|
62
|
37
|
0.00
|
0.0
|
1894
|
46
|
36
|
T
|
0.0
|
1895
|
42
|
34
|
T
|
T
|
1896
|
49
|
37
|
0.01
|
0.0
|
1897
|
60
|
48
|
T
|
0.0
|
1898
|
45
|
34
|
T
|
0.0
|
1899
|
52
|
36
|
0.00
|
0.0
|
1900
|
75
|
61
|
0.00
|
0.0
|
1901
|
64
|
50
|
0.03
|
0.0
|
1902
|
67
|
49
|
0.00
|
0.0
|
1903
|
66
|
52
|
0.00
|
0.0
|
1904
|
62
|
39
|
0.00
|
0.0
|
1905
|
45
|
35
|
0.01
|
0.0
|
1906
|
39
|
33
|
0.00
|
0.0
|
1907
|
57
|
46
|
0.00
|
0.0
|
1908
|
43
|
34
|
0.00
|
0.0
|
1909
|
74
|
56
|
0.00
|
0.0
|
1910
|
60
|
43
|
0.00
|
0.0
|
1911
|
48
|
38
|
0.04
|
0.0
|
1912
|
46
|
41
|
0.75
|
0.0
|
1913
|
40
|
27
|
0.00
|
0.0
|
1914
|
72
|
48
|
0.00
|
0.0
|
1915
|
76
|
54
|
0.00
|
0.0
|
1916
|
58
|
46
|
T
|
0.0
|
1917
|
32
|
24
|
0.01
|
T
|
1918
|
46
|
37
|
0.03
|
T
|
1919
|
70
|
47
|
0.09
|
0.0
|
1920
|
60
|
47
|
T
|
0.0
|
1921
|
56
|
50
|
0.03
|
0.0
|
1922
|
59
|
52
|
0.00
|
0.0
|
1923
|
40
|
26
|
0.00
|
0.0
|
1924
|
70
|
51
|
0.10
|
0.0
|
1925
|
43
|
28
|
0.00
|
0.0
|
1926
|
48
|
32
|
T
|
T
|
1927
|
67
|
58
|
T
|
0.0
|
1928
|
51
|
34
|
0.00
|
0.0
|
1929
|
64
|
53
|
0.22
|
0.0
|
1930
|
39
|
30
|
0.00
|
0.0
|
1931
|
50
|
43
|
0.07
|
0.0
|
1932
|
44
|
39
|
0.11
|
0.0
|
1933
|
78
|
59
|
0.00
|
0.0
|
1934
|
46
|
38
|
T
|
0.0
|
1935
|
78
|
52
|
0.62
|
0.0
|
1936
|
55
|
42
|
0.19
|
0.0
|
1937
|
52
|
45
|
0.00
|
0.0
|
1938
|
64
|
42
|
0.00
|
0.0
|
1939
|
43
|
32
|
T
|
0.0
|
1940
|
64
|
48
|
T
|
0.0
|
1941
|
60
|
46
|
1.27
|
0.0
|
1942
|
53
|
38
|
0.00
|
0.0
|
1943
|
68
|
46
|
0.32
|
0.0
|
1944
|
79
|
50
|
0.00
|
0.0
|
1945
|
55
|
35
|
0.00
|
0.0
|
1946
|
54
|
47
|
0.00
|
0.0
|
1947
|
57
|
46
|
T
|
0.0
|
1948
|
61
|
46
|
T
|
0.0
|
1949
|
43
|
30
|
0.00
|
0.0
|
1950
|
84
|
58
|
0.00
|
0.0
|
1951
|
41
|
31
|
0.00
|
0.0
|
1952
|
69
|
50
|
0.00
|
0.0
|
1953
|
70
|
44
|
T
|
0.0
|
1954
|
40
|
31
|
0.00
|
0.0
|
1955
|
51
|
37
|
0.01
|
T
|
1956
|
68
|
55
|
0.01
|
0.0
|
1957
|
53
|
46
|
0.00
|
0.0
|
1958
|
68
|
39
|
0.00
|
0.0
|
1959
|
50
|
47
|
0.08
|
0.0
|
1960
|
62
|
41
|
0.55
|
0.0
|
1961
|
59
|
45
|
0.00
|
0.0
|
1962
|
47
|
36
|
0.00
|
0.0
|
1963
|
54
|
45
|
0.06
|
0.0
|
1964
|
69
|
36
|
0.00
|
0.0
|
1965
|
58
|
41
|
0.00
|
0.0
|
1966
|
60
|
43
|
0.00
|
0.0
|
1967
|
53
|
49
|
0.10
|
0.0
|
1968
|
77
|
44
|
0.00
|
0.0
|
1969
|
51
|
46
|
0.31
|
0.0
|
1970
|
51
|
37
|
0.19
|
0.0
|
1971
|
56
|
37
|
0.00
|
0.0
|
1972
|
45
|
44
|
0.02
|
0.0
|
1973
|
49
|
41
|
0.65
|
0.0
|
1974
|
77
|
65
|
T
|
0.0
|
1975
|
60
|
41
|
0.00
|
0.0
|
1976
|
49
|
32
|
0.01
|
0.0
|
1977
|
64
|
50
|
0.25
|
0.0
|
1978
|
55
|
39
|
0.00
|
0.0
|
1979
|
73
|
53
|
0.29
|
0.0
|
1980
|
61
|
37
|
0.00
|
0.0
|
1981
|
72
|
54
|
0.00
|
0.0
|
1982
|
64
|
51
|
0.18
|
0.0
|
1983
|
53
|
39
|
T
|
0.0
|
1984
|
61
|
34
|
0.47
|
0.0
|
1985
|
55
|
45
|
0.08
|
0.0
|
1986
|
65
|
44
|
0.00
|
0.0
|
1987
|
58
|
46
|
0.59
|
0.0
|
1988
|
53
|
26
|
T
|
0.0
|
1989
|
55
|
35
|
0.01
|
0.0
|
1990
|
73
|
42
|
0.00
|
0.0
|
1991
|
54
|
41
|
0.02
|
0.0
|
1992
|
50
|
36
|
0.06
|
0.0
|
1993
|
44
|
25
|
T
|
T
|
1994
|
54
|
37
|
2.26
|
0.0
|
1995
|
50
|
40
|
0.20
|
0.0
|
1996
|
40
|
26
|
0.00
|
0.0
|
1997
|
65
|
54
|
0.00
|
0.0
|
1998
|
59
|
54
|
0.00
|
0.0
|
1999
|
69
|
46
|
0.01
|
0.0
|
2000
|
70
|
47
|
0.00
|
0.0
|
2001
|
68
|
50
|
0.00
|
0.0
|
2002
|
49
|
31
|
0.00
|
0.0
|
2003
|
67
|
49
|
0.01
|
0.0
|
2004
|
56
|
45
|
0.00
|
0.0
|
2005
|
57
|
50
|
0.09
|
0.0
|
2006
|
62
|
35
|
0.00
|
0.0
|
2007
|
62
|
41
|
0.00
|
0.0
|
2008
|
70
|
48
|
0.00
|
0.0
|
2009
|
46
|
35
|
T
|
0.0
|
2010
|
52
|
36
|
0.00
|
0.0
|
2011
|
53
|
36
|
0.00
|
0.0
|
2012
|
50
|
34
|
0.00
|
0.0
|
2013
|
64
|
46
|
1.04
|
0.0
|
47
|
33
|
0.03
|
0.1
|
|
2015
|
52
|
45
|
0.77
|
0.0
|
2016
|
61
|
38
|
0.00
|
0.0
|
2017
|
40
|
34
|
0.00
|
0.0
|
2018 | 61 | 47 | 0.17 | 0.0 |
2019 | 33 | 25 | 0.31 | 3.4 |
2020 | 59 | 30 | 0.00 | 0.0 |
2021 | 53 | 39 | 0.00 | 0.0 |
2022 | 57 | 50 | 0.02 | 0.0 |
Rockford
Official weather records for Rockford date back to 1905 for temperatures, precipitation, and snowfall. Observation location history for Rockford can be found here.
Halloween Climate Data for Rockford |
Top 10 Warmest (Highs) | Top 10 Coldest (Highs) | |||||
1 | 1950 | 84 | 1 | 1917 | 32 | |
2 | 1933 | 82 | 2 | 2019 | 33 | |
3 | 1935 | 80 | 3 | 1996 | 36 | |
4 | 1944 | 77 | 4 | 1951 | 38 | |
5 | 1974 | 75 | 1906 | 38 | ||
1968 | 75 | 6 | 2017 | 40 | ||
1915 | 75 | 1895 | 40 | |||
1914 | 75 | 8 | 2002 | 41 | ||
9 | 2000 | 73 | 9 | 1995 | 42 | |
1990 | 73 | 1954 | 42 | |||
Top 10 Warmest (Lows) | Top 10 Coldest (Lows) | |||||
1 | 1974 | 62 | 1 | 1925 | 14 | |
2 | 1950 | 54 | 2 | 1917 | 18 | |
1948 | 54 | 3 | 2019 | 20 | ||
4 | 1929 | 54 | 4 | 1923 | 21 | |
5 | 1935 | 53 | 1913 | 21 | ||
6 | 1997 | 52 | 6 | 1930 | 22 | |
1982 | 52 | 7 | 1993 | 24 | ||
8 | 1921 | 52 | 8 | 1996 | 25 | |
9 | 1981 | 51 | 9 | 1988 | 25 | |
10 | 1998 | 50 | 10 | 1976 | 25 | |
Top 10 Wettest | Top 10 Snowiest | |||||
1 | 1919 | 2.51 | 1 | 2019 | 3.1 | |
2 | 1960 | 1.37 | 2 | 2014 | 0.1 | |
3 | 1985 | 1.17 | 3 | 2017 | T | |
4 | 1936 | 0.8 | 4 | 1935 | T | |
5 | 2013 | 0.79 | 5 | 1926 | T | |
6 | 1984 | 0.7 | 6 | 1918 | T | |
7 | 1935 | 0.6 | 7 | 1917 | T | |
8 | 1994 | 0.55 | ||||
9 | 2015 | 0.47 | ||||
10 | 1969 | 0.46 | ||||
Percent of Years (Precip) |
Percent of Years (Snow) |
|||||
>0 | 45% | >0 | 6% | |||
>=0.01 | 31% | >=0.1 | 2% | |||
>=0.1 | 23% | |||||
>=0.5 | 8% | |||||
>=1 | 3% |
Rockford Yearly
Year | High Temp | Min Temp | Precip | Snow |
1905 | 44 | 30 | 0.00 | 0.0 |
1906 | 38 | 27 | 0.00 | 0.0 |
1907 | 48 | 43 | 0.02 | 0.0 |
1908 | 44 | 25 | 0.00 | 0.0 |
1909 | 71 | 49 | 0.00 | 0.0 |
1910 | 60 | 31 | 0.00 | 0.0 |
1911 | 42 | 38 | 0.14 | 0.0 |
1912 | 44 | 35 | 0.14 | 0.0 |
1913 | 43 | 21 | 0.00 | 0.0 |
1914 | 75 | 41 | 0.00 | 0.0 |
1915 | 75 | 39 | 0.00 | 0.0 |
1916 | 58 | 42 | 0.00 | 0.0 |
1917 | 32 | 18 | 0.03 | T |
1918 | 44 | 31 | T | T |
1919 | M | M | 2.51 | 0.0 |
1920 | 56 | 46 | 0.05 | 0.0 |
1921 | 61 | 52 | 0.10 | 0.0 |
1922 | 66 | 46 | 0.00 | 0.0 |
1923 | 44 | 21 | 0.00 | 0.0 |
1924 | 71 | 46 | 0.20 | 0.0 |
1925 | 43 | 14 | 0.00 | 0.0 |
1926 | 49 | 25 | T | T |
1927 | 70 | 50 | 0.00 | 0.0 |
1928 | 45 | 29 | 0.00 | 0.0 |
1929 | 63 | 54 | 0.46 | 0.0 |
1930 | 43 | 22 | 0.00 | 0.0 |
1931 | 51 | 41 | 0.07 | 0.0 |
1932 | 44 | 37 | T | 0.0 |
1933 | 82 | 48 | 0.03 | 0.0 |
1934 | 53 | 34 | 0.00 | 0.0 |
1935 | 80 | 53 | 0.70 | T |
1936 | 51 | 40 | 0.80 | 0.0 |
1937 | 59 | 33 | 0.00 | 0.0 |
1938 | 67 | 36 | 0.00 | 0.0 |
1939 | 45 | 32 | 0.00 | 0.0 |
1940 | 67 | 37 | 0.00 | 0.0 |
1941 | 49 | 42 | 0.25 | 0.0 |
1942 | 55 | 35 | 0.00 | 0.0 |
1943 | 65 | 42 | 0.15 | 0.0 |
1944 | 77 | 49 | 0.00 | 0.0 |
1945 | 65 | 29 | 0.00 | 0.0 |
1946 | 55 | 38 | 0.00 | 0.0 |
1947 | 57 | 46 | 0.00 | 0.0 |
1948 | 68 | 54 | 0.00 | 0.0 |
1949 | 44 | 25 | 0.00 | 0.0 |
1950 | 84 | 54 | 0.00 | 0.0 |
1951 | 38 | 29 | 0.00 | 0.0 |
1952 | 71 | 40 | 0.00 | 0.0 |
1953 | 64 | 42 | T | 0.0 |
1954 | 42 | 27 | 0.00 | 0.0 |
1955 | 51 | 36 | T | 0.0 |
1956 | 70 | 49 | 0.00 | 0.0 |
1957 | 57 | 31 | 0.00 | 0.0 |
1958 | 66 | 31 | 0.00 | 0.0 |
1959 | 50 | 44 | 0.07 | 0.0 |
1960 | 59 | 41 | 1.37 | 0.0 |
1961 | 57 | 41 | 0.00 | 0.0 |
1962 | 46 | 32 | 0.00 | 0.0 |
1963 | 51 | 46 | 0.15 | 0.0 |
1964 | 67 | 35 | 0.00 | 0.0 |
1965 | 59 | 39 | 0.00 | 0.0 |
1966 | 58 | 40 | 0.00 | 0.0 |
1967 | 47 | 44 | 0.08 | 0.0 |
1968 | 75 | 42 | 0.00 | 0.0 |
1969 | 50 | 44 | 0.47 | 0.0 |
1970 | 46 | 34 | T | 0.0 |
1971 | 52 | 34 | 0.00 | 0.0 |
1972 | 47 | 43 | 0.17 | 0.0 |
1973 | 48 | 42 | 0.38 | 0.0 |
1974 | 75 | 62 | 0.18 | 0.0 |
1975 | 62 | 39 | T | 0.0 |
1976 | 49 | 25 | 0.00 | 0.0 |
1977 | 61 | 50 | 0.25 | 0.0 |
1978 | 61 | 34 | 0.00 | 0.0 |
1979 | 70 | 48 | 0.28 | 0.0 |
1980 | 62 | 29 | 0.00 | 0.0 |
1981 | 66 | 51 | T | 0.0 |
1982 | 68 | 52 | 0.02 | 0.0 |
1983 | 56 | 39 | T | 0.0 |
1984 | 62 | 33 | 0.78 | 0.0 |
1985 | 53 | 40 | 1.17 | 0.0 |
1986 | 66 | 41 | 0.00 | 0.0 |
1987 | 58 | 41 | 0.07 | 0.0 |
1988 | 54 | 25 | T | 0.0 |
1989 | 47 | 32 | T | 0.0 |
1990 | 73 | 42 | 0.00 | 0.0 |
1991 | 53 | 36 | 0.26 | 0.0 |
1992 | 50 | 30 | 0.18 | 0.0 |
1993 | 43 | 24 | 0.00 | 0.0 |
1994 | 46 | 40 | 0.60 | 0.0 |
1995 | 42 | 34 | 0.27 | 0.0 |
1996 | 36 | 25 | 0.00 | 0.0 |
1997 | 67 | 52 | 0.00 | 0.0 |
1998 | 56 | 50 | 0.00 | 0.0 |
1999 | 68 | 40 | 0.00 | 0.0 |
2000 | 73 | 49 | 0.00 | 0.0 |
2001 | 65 | 44 | 0.00 | 0.0 |
2002 | 41 | 26 | 0.00 | 0.0 |
2003 | 65 | 46 | T | 0.0 |
2004 | 53 | 44 | 0.00 | 0.0 |
2005 | 56 | 43 | T | 0.0 |
2006 | 51 | 30 | 0.00 | 0.0 |
2007 | 63 | 40 | 0.00 | 0.0 |
2008 | 72 | 42 | 0.00 | 0.0 |
2009 | 46 | 30 | T | 0.0 |
2010 | 53 | 34 | 0.00 | 0.0 |
2011 | 51 | 28 | 0.00 | 0.0 |
2012 | 51 | 29 | 0.00 | 0.0 |
2013 | 63 | 44 | 0.79 | 0.0 |
2014 | 47 | 33 | T | 0.1 |
2015 | 52 | 45 | 0.55 | 0.0 |
2016 | 61 | 38 | T | 0.0 |
2017 | 40 | 32 | T | T |
2018 | 59 | 45 | 0.00 | 0.0 |
2019 | 33 | 20 | 0.16 | 3.1 |
2020 | 61 | 29 | 0.00 | 0.0 |
2021 | 54 | 37 | 0.00 | 0.0 |
2022 | 68 | 41 | 0.00 | 0.0 |