Heating Degree Days (HDD) for January
| Chronological | Ranked |
| Year | HDD | Deviation |
Rank | Year | HDD | Deviation |
| 2025 | 1416.0 | -89.8 |
1 | 1912 | 2080.0 | 574.1 |
| 2024 | 1272.5 | -233.3 |
2 | 1977 | 1969.5 | 463.6 |
| 2023 | 1260.0 | -245.8 |
3 | 1979 | 1927.5 | 421.6 |
| 2022 | 1532.0 | 26.1 |
4 | 1929 | 1876.0 | 370.1 |
| 2021 | 1262.0 | -243.8 |
5 | 1982 | 1872.0 | 366.1 |
| 2020 | 1234.5 | -271.3 |
6 | 1918 | 1861.0 | 355.1 |
| 2019 | 1526.0 | 20.1 |
7 | 1963 | 1826.0 | 320.1 |
| 2018 | 1405.5 | -100.3 |
8 | 1930 | 1809.5 | 303.6 |
| 2017 | 1346.0 | -159.8 |
9 | 1905 | 1808.0 | 302.1 |
| 2016 | 1478.5 | -27.3 |
10 | 1978 | 1806.5 | 300.6 |
| 2015 | 1400.5 | -105.3 |
11 | 1970 | 1805.5 | 299.6 |
| 2014 | 1693.5 | 187.6 |
12 | 1994 | 1795.0 | 289.1 |
| 2013 | 1367.0 | -138.8 |
13 | 1895 | 1783.0 | 277.1 |
| 2012 | 1279.5 | -226.3 |
14 | 1924 | 1764.5 | 258.6 |
| 2011 | 1569.0 | 63.1 |
15 | 1904 | 1757.0 | 251.1 |
| 2010 | 1589.5 | 83.6 |
16 | 1971 | 1749.0 | 243.1 |
| 2009 | 1741.0 | 235.1 |
17 | 2009 | 1741.0 | 235.1 |
| 2008 | 1560.5 | 54.6 |
18 | 1972 | 1733.0 | 227.1 |
| 2007 | 1336.5 | -169.3 |
19 | 1936 | 1732.5 | 226.6 |
| 2006 | 1045.0 | -460.8 |
20 | 1940 | 1726.5 | 220.6 |
| 2005 | 1475.0 | -30.8 |
21 | 1917 | 1725.5 | 219.6 |
| 2004 | 1508.0 | 2.1 |
22 | 1966 | 1721.5 | 215.6 |
| 2003 | 1480.5 | -25.3 |
23 | 1937 | 1714.0 | 208.1 |
| 2002 | 1125.5 | -380.3 |
24 | 2014 | 1693.5 | 187.6 |
| 2001 | 1394.0 | -111.8 |
25 | 1920 | 1686.5 | 180.6 |
| 2000 | 1474.0 | -31.8 |
26 | 1951 | 1672.5 | 166.6 |
| 1999 | 1543.5 | 37.6 |
27 | 1943 | 1671.5 | 165.6 |
| 1998 | 1317.5 | -188.3 |
28 | 1959 | 1664.5 | 158.6 |
| 1997 | 1572.0 | 66.1 |
29 | 1948 | 1662.5 | 156.6 |
| 1996 | 1612.0 | 106.1 |
30 | 1991 | 1657.5 | 151.6 |
| 1995 | 1451.5 | -54.3 |
31 | 1988 | 1642.0 | 136.1 |
| 1994 | 1795.0 | 289.1 |
32 | 1985 | 1635.0 | 129.1 |
| 1993 | 1493.5 | -12.3 |
33 | 1945 | 1633.5 | 127.6 |
| 1992 | 1292.5 | -213.3 |
34 | 1962 | 1619.5 | 113.6 |
| 1991 | 1657.5 | 151.6 |
35 | 1969 | 1616.0 | 110.1 |
| 1990 | 1138.5 | -367.3 |
36 | 1957 | 1614.0 | 108.1 |
| 1989 | 1189.0 | -316.8 |
37 | 1996 | 1612.0 | 106.1 |
| 1988 | 1642.0 | 136.1 |
38 | 1915 | 1595.5 | 89.6 |
| 1987 | 1331.0 | -174.8 |
39 | 1897 | 1594.5 | 88.6 |
| 1986 | 1462.5 | -43.3 |
40 | 2010 | 1589.5 | 83.6 |
| 1985 | 1635.0 | 129.1 |
41 | 1965 | 1584.5 | 78.6 |
| 1984 | 1532.0 | 26.1 |
42 | 1911 | 1573.0 | 67.1 |
| 1983 | 1308.5 | -197.3 |
43 | 1910 | 1572.5 | 66.6 |
| 1982 | 1872.0 | 366.1 |
44 | 1997 | 1572.0 | 66.1 |
| 1981 | 1395.0 | -110.8 |
45 | 2011 | 1569.0 | 63.1 |
| 1980 | 1471.5 | -34.3 |
46 | 1976 | 1568.0 | 62.1 |
| 1979 | 1927.5 | 421.6 |
47 | 1935 | 1564.0 | 58.1 |
| 1978 | 1806.5 | 300.6 |
48 | 2008 | 1560.5 | 54.6 |
| 1977 | 1969.5 | 463.6 |
49 | 1907 | 1556.0 | 50.1 |
| 1976 | 1568.0 | 62.1 |
50 | 1922 | 1551.0 | 45.1 |
| 1975 | 1511.0 | 5.1 |
51 | 1899 | 1546.0 | 40.1 |
| 1974 | 1543.5 | 37.6 |
52 | 1974 | 1543.5 | 37.6 |
| 1973 | 1432.5 | -73.3 |
53 | 1999 | 1543.5 | 37.6 |
| 1972 | 1733.0 | 227.1 |
54 | 1956 | 1538.0 | 32.1 |
| 1971 | 1749.0 | 243.1 |
55 | 1984 | 1532.0 | 26.1 |
| 1970 | 1805.5 | 299.6 |
56 | 2022 | 1532.0 | 26.1 |
| 1969 | 1616.0 | 110.1 |
57 | 2019 | 1526.0 | 20.1 |
| 1968 | 1445.0 | -60.8 |
58 | 1975 | 1511.0 | 5.1 |
| 1967 | 1396.5 | -109.3 |
59 | 1925 | 1510.5 | 4.6 |
| 1966 | 1721.5 | 215.6 |
60 | 1927 | 1510.0 | 4.1 |
| 1965 | 1584.5 | 78.6 |
61 | 2004 | 1508.0 | 2.1 |
| 1964 | 1276.0 | -229.8 |
62 | 1961 | 1504.5 | -1.3 |
| 1963 | 1826.0 | 320.1 |
63 | 1954 | 1502.0 | -3.8 |
| 1962 | 1619.5 | 113.6 |
64 | 1916 | 1497.0 | -8.8 |
| 1961 | 1504.5 | -1.3 |
65 | 1894 | 1493.5 | -12.3 |
| 1960 | 1349.0 | -156.8 |
66 | 1993 | 1493.5 | -12.3 |
| 1959 | 1664.5 | 158.6 |
67 | 1926 | 1489.0 | -16.8 |
| 1958 | 1356.0 | -149.8 |
68 | 1942 | 1486.0 | -19.8 |
| 1957 | 1614.0 | 108.1 |
69 | 2003 | 1480.5 | -25.3 |
| 1956 | 1538.0 | 32.1 |
70 | 2016 | 1478.5 | -27.3 |
| 1955 | 1463.5 | -42.3 |
71 | 2005 | 1475.0 | -30.8 |
| 1954 | 1502.0 | -3.8 |
72 | 2000 | 1474.0 | -31.8 |
| 1953 | 1381.5 | -124.3 |
73 | 1980 | 1471.5 | -34.3 |
| 1952 | 1453.0 | -52.8 |
74 | 1955 | 1463.5 | -42.3 |
| 1951 | 1672.5 | 166.6 |
75 | 1986 | 1462.5 | -43.3 |
| 1950 | 1459.0 | -46.8 |
76 | 1903 | 1461.0 | -44.8 |
| 1949 | 1452.0 | -53.8 |
77 | 1950 | 1459.0 | -46.8 |
| 1948 | 1662.5 | 156.6 |
78 | 1952 | 1453.0 | -52.8 |
| 1947 | 1331.0 | -174.8 |
79 | 1949 | 1452.0 | -53.8 |
| 1946 | 1410.5 | -95.3 |
80 | 1995 | 1451.5 | -54.3 |
| 1945 | 1633.5 | 127.6 |
81 | 1896 | 1445.0 | -60.8 |
| 1944 | 1189.0 | -316.8 |
82 | 1968 | 1445.0 | -60.8 |
| 1943 | 1671.5 | 165.6 |
83 | 1938 | 1441.5 | -64.3 |
| 1942 | 1486.0 | -19.8 |
84 | 1973 | 1432.5 | -73.3 |
| 1941 | 1371.5 | -134.3 |
85 | 1902 | 1430.5 | -75.3 |
| 1940 | 1726.5 | 220.6 |
86 | 1913 | 1419.5 | -86.3 |
| 1939 | 1229.0 | -276.8 |
87 | 2025 | 1416.0 | -89.8 |
| 1938 | 1441.5 | -64.3 |
88 | 1901 | 1412.5 | -93.3 |
| 1937 | 1714.0 | 208.1 |
89 | 1909 | 1412.5 | -93.3 |
| 1936 | 1732.5 | 226.6 |
90 | 1946 | 1410.5 | -95.3 |
| 1935 | 1564.0 | 58.1 |
91 | 2018 | 1405.5 | m |
| 1934 | 1285.0 | -220.8 |
92 | 2015 | 1400.5 | -100.3 |
| 1933 | 1126.5 | -379.3 |
93 | 1967 | 1396.5 | -105.3 |
| 1932 | 1354.0 | -151.8 |
94 | 1981 | 1395.0 | -109.3 |
| 1931 | 1268.0 | -237.8 |
95 | 2001 | 1394.0 | -110.8 |
| 1930 | 1809.5 | 303.6 |
96 | 1898 | 1393.5 | -111.8 |
| 1929 | 1876.0 | 370.1 |
97 | 1900 | 1386.0 | -112.3 |
| 1928 | 1373.5 | -132.3 |
98 | 1953 | 1381.5 | -119.8 |
| 1927 | 1510.0 | 4.1 |
99 | 1928 | 1373.5 | -124.3 |
| 1926 | 1489.0 | -16.8 |
100 | 1908 | 1372.0 | -132.3 |
| 1925 | 1510.5 | 4.6 |
101 | 1941 | 1371.5 | -133.8 |
| 1924 | 1764.5 | 258.6 |
102 | 1906 | 1368.5 | -134.3 |
| 1923 | 1329.5 | -176.3 |
103 | 2013 | 1367.0 | -137.3 |
| 1922 | 1551.0 | 45.1 |
104 | 1958 | 1356.0 | -138.8 |
| 1921 | 1234.0 | -271.8 |
105 | 1932 | 1354.0 | -149.8 |
| 1920 | 1686.5 | 180.6 |
106 | 1960 | 1349.0 | -151.8 |
| 1919 | 1277.5 | -228.3 |
107 | 2017 | 1346.0 | -156.8 |
| 1918 | 1861.0 | 355.1 |
108 | 2007 | 1336.5 | -159.8 |
| 1917 | 1725.5 | 219.6 |
109 | 1947 | 1331.0 | -169.3 |
| 1916 | 1497.0 | -8.8 |
110 | 1987 | 1331.0 | -174.8 |
| 1915 | 1595.5 | 89.6 |
111 | 1923 | 1329.5 | -174.8 |
| 1914 | 1196.0 | -309.8 |
112 | 1998 | 1317.5 | -176.3 |
| 1913 | 1419.5 | -86.3 |
113 | 1983 | 1308.5 | -188.3 |
| 1912 | 2080.0 | 574.1 |
114 | 1992 | 1292.5 | -197.3 |
| 1911 | 1573.0 | 67.1 |
115 | 1934 | 1285.0 | -213.3 |
| 1910 | 1572.5 | 66.6 |
116 | 2012 | 1279.5 | -220.8 |
| 1909 | 1412.5 | -93.3 |
117 | 1919 | 1277.5 | -226.3 |
| 1908 | 1372.0 | -133.8 |
118 | 1964 | 1276.0 | -228.3 |
| 1907 | 1556.0 | 50.1 |
119 | 2024 | 1272.5 | -229.8 |
| 1906 | 1368.5 | -137.3 |
120 | 1931 | 1268.0 | -233.3 |
| 1905 | 1808.0 | 302.1 |
121 | 2021 | 1262.0 | -237.8 |
| 1904 | 1757.0 | 251.1 |
122 | 2023 | 1260.0 | -243.8 |
| 1903 | 1461.0 | -44.8 |
123 | 2020 | 1234.5 | -245.8 |
| 1902 | 1430.5 | -75.3 |
124 | 1921 | 1234.0 | -271.3 |
| 1901 | 1412.5 | -93.3 |
125 | 1939 | 1229.0 | -271.8 |
| 1900 | 1386.0 | -119.8 |
126 | 1914 | 1196.0 | -276.8 |
| 1899 | 1546.0 | 40.1 |
127 | 1944 | 1189.0 | -309.8 |
| 1898 | 1393.5 | -112.3 |
128 | 1989 | 1189.0 | -316.8 |
| 1897 | 1594.5 | 88.6 |
129 | 1990 | 1138.5 | -316.8 |
| 1896 | 1445.0 | -60.8 |
130 | 1933 | 1126.5 | -367.3 |
| 1895 | 1783.0 | 277.1 |
131 | 2002 | 1125.5 | -379.3 |
| 1894 | 1493.5 | -12.3 |
132 | 2006 | 1045.0 | -380.3 |
| 1893 | m | m |
133 | 1893 | m | -460.8 |
| Mean | 1505.8 |
|
| SD | 191.7 |
|