January U.S. Percentage Areas Very Warm/Very Cold
%
1895
0.00
1.70
1896
3.68
0.00
1897
0.00
4.04
1898
1.11
18.60
1899
0.35
1.77
1900
10.12
0.00
1901
0.00
0.00
1902
0.00
0.36
1903
0.00
0.00
1904
0.00
9.45
1905
1.25
14.44
1906
6.80
0.00
1907
30.21
13.38
1908
0.52
0.00
1909
16.64
2.79
1910
0.00
1.91
1911
25.07
0.52
1912
0.00
38.38
1913
17.04
9.62
1914
20.53
0.00
1915
0.00
1.96
1916
12.90
24.07
1917
0.00
18.37
1918
0.10
57.55
1919
11.85
10.08
1920
0.90
9.16
1921
18.37
0.00
1922
0.00
19.63
1923
27.03
0.00
1924
0.00
6.90
1925
0.45
6.73
1926
0.00
4.43
1927
4.29
0.00
1928
0.25
0.00
1929
0.00
26.51
1930
0.00
49.93
1931
16.27
0.00
1932
28.25
14.32
1933
43.11
6.91
1934
19.12
0.00
1935
10.84
1.10
1936
0.00
9.94
1937
22.34
54.52
1938
0.56
0.00
1939
9.43
0.00
1940
0.00
52.18
1941
0.00
0.00
1942
2.69
0.58
1943
0.00
1.59
1944
12.90
0.64
1945
0.19
4.87
1946
0.00
0.48
1947
3.36
0.63
1948
2.34
14.17
1949
19.09
47.78
1950
34.10
20.27
1951
0.00
0.00
1952
23.90
0.00
1953
46.91
0.00
1954
3.82
0.00
1955
0.00
7.06
1956
12.01
0.45
1957
3.36
16.65
1958
7.61
1.54
1959
0.35
0.74
1960
0.00
1.67
1961
1.00
2.70
1962
0.00
7.93
1963
0.00
38.26
1964
1.93
2.19
1965
4.88
0.00
1966
0.00
12.25
1967
2.56
0.00
1968
0.00
2.19
1969
9.35
7.85
1970
0.00
17.69
1971
1.44
1.89
1972
2.05
1.44
1973
0.00
4.20
1974
13.42
0.90
1975
0.84
0.00
1976
0.00
0.43
1977
0.00
49.69
1978
2.82
43.66
1979
0.00
65.29
1980
3.61
0.00
1981
31.45
7.86
1982
0.00
26.74
1983
12.79
0.00
1984
0.00
3.07
1985
0.00
15.54
1986
38.77
0.00
1987
9.48
0.00
1988
0.00
1.80
1989
26.20
0.00
1990
48.74
0.00
1991
0.84
0.00
1992
19.81
0.00
1993
3.74
0.00
1994
8.55
13.84
1995
5.27
0.00
1996
2.60
0.00
1997
0.00
0.00
1998
21.35
0.00
1999
21.41
0.00
2000
20.98
0.00
2001
3.92
0.84
2002
19.99
0.00
2003
33.68
0.84
2004
0.00
3.54
2005
20.42
0.00
2006
67.97
0.00
2007
3.87
1.72
2008
0.33
0.25
2009
10.67
2.57
2010
6.61
0.84
2011
0.46
0.00
2012
44.25
0.00
2013
2.67
0.91
2014
15.30
6.37
2015
25.39
0.00
2016
1.58
0.00
2017
30.93
0.00
2018
27.10
0.00
2019
4.19
0.00
2020
24.59
0.00
2021
13.86
0.00
2022
3.20
0.00
2023
38.82
0.00
2024
9.62
0.00