October U.S. Percentage Areas Very Warm/Very Cold
%
1895
0.00
54.63
1896
0.00
29.14
1897
12.72
6.72
1898
0.00
35.72
1899
3.58
24.40
1900
36.23
2.40
1901
7.18
0.00
1902
0.79
0.46
1903
0.00
1.74
1904
0.13
2.45
1905
0.00
37.20
1906
0.00
20.97
1907
5.63
11.66
1908
0.00
32.90
1909
0.00
12.33
1910
2.98
0.00
1911
7.34
22.67
1912
0.08
30.44
1913
1.92
40.86
1914
7.01
0.00
1915
0.00
0.00
1916
0.00
30.22
1917
2.21
56.73
1918
9.35
0.00
1919
23.66
47.81
1920
18.46
17.33
1921
3.44
0.00
1922
0.47
0.00
1923
0.00
40.95
1924
11.86
5.82
1925
0.00
54.14
1926
5.60
0.38
1927
0.40
0.00
1928
6.35
0.81
1929
0.00
0.90
1930
0.00
13.16
1931
16.89
0.00
1932
0.00
14.27
1933
16.08
2.25
1934
20.70
2.49
1935
0.00
1.11
1936
1.89
12.72
1937
3.58
1.32
1938
23.26
1.10
1939
1.75
0.33
1940
23.77
6.20
1941
25.29
9.21
1942
0.00
0.00
1943
0.00
1.54
1944
11.87
0.84
1945
0.00
0.17
1946
4.90
36.14
1947
64.22
0.00
1948
0.00
3.55
1949
19.79
19.01
1950
34.35
0.17
1951
1.20
2.20
1952
22.89
37.51
1953
15.74
0.45
1954
4.71
0.29
1955
0.91
0.00
1956
27.45
1.30
1957
0.00
29.46
1958
5.36
1.92
1959
1.95
21.00
1960
0.00
0.00
1961
0.00
0.00
1962
3.28
0.00
1963
67.82
0.00
1964
10.59
13.37
1965
12.58
1.54
1966
0.00
5.20
1967
0.81
1.61
1968
1.10
0.00
1969
0.00
48.18
1970
0.59
34.53
1971
30.52
21.50
1972
0.00
14.07
1973
11.35
0.00
1974
0.00
7.82
1975
0.16
1.25
1976
0.00
66.81
1977
0.00
2.96
1978
8.56
0.00
1979
2.99
0.00
1980
0.00
11.51
1981
0.00
9.77
1982
0.00
9.16
1983
0.81
0.00
1984
18.89
40.25
1985
8.87
2.22
1986
0.29
2.40
1987
17.66
36.87
1988
30.14
34.22
1989
0.00
0.00
1990
4.42
1.11
1991
5.98
3.92
1992
5.78
3.28
1993
2.53
4.75
1994
0.00
0.00
1995
5.60
1.62
1996
0.00
0.00
1997
0.00
0.00
1998
2.97
0.00
1999
6.32
0.00
2000
0.00
0.00
2001
11.26
1.36
2002
6.46
32.48
2003
38.44
0.00
2004
12.17
0.00
2005
0.68
0.00
2006
0.00
3.72
2007
29.52
0.71
2008
0.81
0.00
2009
1.54
50.86
2010
7.35
0.00
2011
3.19
0.00
2012
4.37
0.74
2013
1.30
5.49
2014
40.60
0.00
2015
33.55
0.00
2016
50.85
0.00
2017
16.54
0.27
2018
6.59
9.45
2019
11.72
43.14
2020
20.31
22.83
2021
34.59
0.00
2022
16.00
0.00
2023
10.72
0.00