| Year | Weighted heating degree days (HDD) | Trend HDD | Weighted cooling degree days (CDD) | Trend CDD | HDD (new) | HDD (previous) | CDD (new) | CDD (previous) |
|---|---|---|---|---|---|---|---|---|
| 1950 | 2286.6 | 2327.0 | 92.0 | 76.6 | 2286.6 | 92.0 | ||
| 1951 | 2252.9 | 2327.6 | 70.7 | 76.0 | 2252.9 | 2234.3 | 70.7 | 67.2 |
| 1952 | 2410.8 | 2328.2 | 89.4 | 75.5 | 2410.8 | 2436.4 | 89.4 | 94.3 |
| 1953 | 2211.9 | 2328.8 | 77.0 | 74.9 | 2211.9 | 2240.7 | 77.0 | 69.6 |
| 1954 | 2377.5 | 2329.4 | 65.8 | 74.4 | 2377.5 | 2481.5 | 65.8 | 55.0 |
| 1955 | 2409.6 | 2330.0 | 67.5 | 73.8 | 2409.6 | 2442.9 | 67.5 | 65.9 |
| 1956 | 2569.6 | 2330.6 | 58.6 | 73.2 | 2569.6 | 2706.4 | 58.6 | 55.0 |
| 1957 | 2179.1 | 2331.2 | 70.2 | 72.7 | 2179.1 | 2235.5 | 70.2 | 65.8 |
| 1958 | 2331.3 | 2331.8 | 70.4 | 72.1 | 2331.3 | 2345.4 | 70.4 | 69.2 |
| 1959 | 2172.7 | 2332.4 | 72.4 | 71.6 | 2172.7 | 2206.2 | 72.4 | 77.8 |
| 1960 | 2284.1 | 2333.0 | 58.6 | 71.0 | 2284.1 | 2252.3 | 58.6 | 52.6 |
| 1961 | 2128.4 | 2333.6 | 72.3 | 70.4 | 2128.4 | 2122.4 | 72.3 | 71.1 |
| 1962 | 2428.9 | 2334.2 | 74.2 | 69.9 | 2428.9 | 2562.2 | 74.2 | 73.3 |
| 1963 | 2561.8 | 2334.8 | 73.8 | 69.3 | 2561.8 | 2663.2 | 73.8 | 68.8 |
| 1964 | 2335.1 | 2335.4 | 76.3 | 68.8 | 2335.1 | 2440.5 | 76.3 | 80.1 |
| 1965 | 2422.7 | 2336.0 | 59.2 | 68.2 | 2422.7 | 2504.3 | 59.2 | 51.7 |
| 1966 | 2389.7 | 2336.5 | 66.0 | 67.7 | 2389.7 | 2265.2 | 66.0 | 58.0 |
| 1967 | 2263.7 | 2337.1 | 70.9 | 67.1 | 2263.7 | 2256.4 | 70.9 | 74.0 |
| 1968 | 2385.0 | 2337.7 | 66.0 | 66.5 | 2385.0 | 2349.1 | 66.0 | 55.1 |
| 1969 | 2516.6 | 2338.3 | 66.4 | 66.0 | 2516.6 | 2503.4 | 66.4 | 57.7 |
| 1970 | 2427.4 | 2338.9 | 69.0 | 65.4 | 2427.4 | 2455.2 | 69.0 | 65.8 |
| 1971 | 2334.5 | 2339.5 | 67.8 | 64.9 | 2334.5 | 2355.3 | 67.8 | 71.8 |
| 1972 | 2236.9 | 2340.1 | 59.1 | 64.3 | 2236.9 | 2365.9 | 59.1 | 46.4 |
| 1973 | 2354.3 | 2340.7 | 74.7 | 63.7 | 2354.3 | 2416.9 | 74.7 | 72.4 |
| 1974 | 2121.8 | 2341.3 | 60.8 | 63.2 | 2121.8 | 2215.6 | 60.8 | 60.2 |
| 1975 | 2155.3 | 2341.9 | 73.3 | 62.6 | 2155.3 | 2247.9 | 73.3 | 74.7 |
| 1976 | 2412.1 | 2342.5 | 64.4 | 62.1 | 2412.1 | 2406.5 | 64.4 | 73.7 |
| 1977 | 2185.8 | 2343.1 | 51.2 | 61.5 | 2185.8 | 2225.5 | 51.2 | 41.2 |
| 1978 | 2383.3 | 2343.7 | 53.2 | 60.9 | 2383.3 | 2425.9 | 53.2 | 46.3 |
| 1979 | 2399.1 | 2344.3 | 65.9 | 60.4 | 2399.1 | 2444.7 | 65.9 | 57.6 |
| 1980 | 2486.0 | 2344.9 | 57.4 | 59.8 | 2486.0 | 2500.1 | 57.4 | 53.8 |
| 1981 | 2410.1 | 2314.4 | 66.7 | 73.7 | 2410.1 | 2356.2 | 66.7 | 57.8 |
| 1982 | 2230.1 | 2307.9 | 81.1 | 74.7 | 2230.1 | 2256.8 | 81.1 | 84.2 |
| 1983 | 2250.1 | 2301.5 | 83.8 | 75.6 | 2250.1 | 2239.3 | 83.8 | 99.7 |
| 1984 | 2255.5 | 2295.0 | 58.0 | 76.5 | 2255.5 | 2347.8 | 58.0 | 55.4 |
| 1985 | 2593.0 | 2288.5 | 76.1 | 77.5 | 2593.0 | 2578.3 | 76.1 | 80.4 |
| 1986 | 2385.9 | 2282.1 | 78.2 | 78.4 | 2385.9 | 2461.5 | 78.2 | 72.2 |
| 1987 | 2469.9 | 2275.6 | 80.3 | 79.3 | 2469.9 | 2500.7 | 80.3 | 80.4 |
| 1988 | 2261.6 | 2269.2 | 79.2 | 80.2 | 2261.6 | 2172.7 | 79.2 | 79.6 |
| 1989 | 2011.2 | 2262.7 | 78.8 | 81.2 | 2011.2 | 2028.1 | 78.8 | 80.2 |
| 1990 | 1988.9 | 2256.3 | 81.3 | 82.1 | 1988.9 | 2010.4 | 81.3 | 90.7 |
| 1991 | 2228.2 | 2249.8 | 82.4 | 83.0 | 2228.2 | 2379.1 | 82.4 | 93.8 |
| 1992 | 2162.7 | 2243.4 | 91.5 | 84.0 | 2162.7 | 2184.6 | 91.5 | 97.2 |
| 1993 | 2270.2 | 2236.9 | 74.7 | 84.9 | 2270.2 | 2294.6 | 74.7 | 72.1 |
| 1994 | 2152.1 | 2230.4 | 112.6 | 85.8 | 2152.1 | 2039.9 | 112.6 | 121.9 |
| 1995 | 2197.4 | 2224.0 | 86.5 | 86.8 | 2197.4 | 2177.3 | 86.5 | 98.5 |
| 1996 | 2370.5 | 2217.5 | 69.5 | 87.7 | 2370.5 | 2485.9 | 69.5 | 65.7 |
| 1997 | 2165.0 | 2211.1 | 78.9 | 88.6 | 2165.0 | 2160.0 | 78.9 | 85.6 |
| 1998 | 2229.3 | 2204.6 | 88.6 | 89.6 | 2229.3 | 2137.3 | 88.6 | 90.6 |
| 1999 | 2194.5 | 2198.2 | 94.1 | 90.5 | 2194.5 | 2087.2 | 94.1 | 100.1 |
| 2000 | 1988.5 | 2191.7 | 94.6 | 91.4 | 1988.5 | 1941.9 | 94.6 | 95.4 |
| 2001 | 2204.8 | 2185.3 | 93.7 | 92.3 | 2204.8 | 2163.9 | 93.7 | 102.2 |
| 2002 | 2150.0 | 2178.8 | 90.2 | 93.3 | 2150.0 | 1993.2 | 90.2 | 87.3 |
| 2003 | 2237.2 | 2172.4 | 152.0 | 94.2 | 2237.2 | 2206.8 | 152.0 | 173.0 |
| 2004 | 2168.0 | 2165.9 | 81.6 | 95.1 | 2168.0 | 2146.2 | 81.6 | 89.5 |
| 2005 | 2205.1 | 2159.4 | 91.7 | 96.1 | 2205.1 | 2192.1 | 91.7 | 91.8 |
| 2006 | 2170.7 | 2153.0 | 107.9 | 97.0 | 2170.7 | 2090.5 | 107.9 | 132.3 |
| 2007 | 2054.2 | 2146.5 | 94.0 | 97.9 | 2054.2 | 1925.0 | 94.0 | 97.7 |
| 2008 | 2026.0 | 2140.1 | 86.5 | 98.9 | 2026.0 | 2006.3 | 86.5 | 94.1 |
| 2009 | 2220.2 | 2133.6 | 96.6 | 99.8 | 2220.2 | 2107.2 | 96.6 | 116.8 |
| 2010 | 2489.0 | 2127.2 | 100.1 | 100.7 | 2489.0 | 2422.8 | 100.1 | 105.5 |
| 2011 | 2108.2 | 2120.7 | 95.9 | 101.6 | 2108.2 | 1962.4 | 95.9 | 102.0 |
| 2012 | 2228.4 | 2114.3 | 115.0 | 102.6 | 2228.4 | 2151.4 | 115.0 | 127.0 |
| 2013 | 2197.0 | 2107.8 | 94.7 | 103.5 | 2197.0 | 2195.5 | 94.7 | 112.3 |
| 2014 | 1943.5 | 2101.3 | 82.1 | 104.4 | 1943.5 | 1759.0 | 82.1 | 88.0 |
| 2015 | 1951.3 | 2094.9 | 116.6 | 105.4 | 1951.3 | 116.6 | ||
| 2016 | 2109.5 | 2088.4 | 99.6 | 106.3 | 2109.5 | 99.6 | ||
| 2017 | 2054.6 | 2082.0 | 112.7 | 107.2 | 2054.6 | 112.7 |