Heating degree days

Base temperature



°F

Heating season begins


Calculation method






Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
2023/2024 11.9 75.9 202.0 419.2 499.1 351.7 316.0 182.1 73.8 6.1 0.0 0.0 2137.7
2024/2025 8.4 101.0 356.7 358.4 530.0 277.0 241.2 134.5 2007.3

2023/2024
2024/2025
sum
avg
Sep 11.98.4 20.3 10.2
Oct 75.9101.0 176.8 88.4
Nov 202.0356.7 558.7 279.4
Dec 419.2358.4 777.7 388.8
Jan 499.1530.0 688.3 344.2
Feb 351.7277.0 765.7 382.8
Mar 316.0241.2 618.5 309.3
Apr 182.1134.5 353.5 176.7
May 73.8 63.6 63.6
Jun 6.1 30.4 30.4
Jul 0.0 1.0 1.0
Aug 0.0 0.0 0.0












2023/2024


2024/2025


2023/2024
Day
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
10.01.42.616.215.86.210.316.23.31.10.00.0
20.01.86.017.515.515.39.412.03.11.10.00.0
30.02.96.116.116.317.011.08.62.60.90.00.0
40.03.65.715.222.213.511.44.93.10.10.00.0
50.03.44.210.521.910.010.04.82.90.90.00.0
60.21.13.45.222.34.88.812.43.40.00.00.0
70.00.03.710.321.318.217.113.45.10.00.00.0
80.00.06.614.228.718.714.510.03.40.00.00.0
90.00.011.517.727.418.912.46.93.20.00.00.0
100.01.912.88.422.722.66.46.94.00.40.00.0
110.01.67.614.122.520.59.15.13.90.20.00.0
120.01.66.29.224.616.99.23.53.50.00.00.0
130.02.51.714.220.615.29.13.83.10.00.00.0
140.02.31.017.816.114.09.53.72.20.00.00.0
150.52.72.516.417.313.79.87.92.01.00.00.0
161.20.81.49.716.514.112.66.41.60.00.00.0
170.00.31.07.015.212.314.14.61.90.00.00.0
180.41.52.68.311.711.210.44.11.30.30.00.0
191.02.55.65.911.810.29.23.01.90.00.00.0
201.22.010.96.410.79.39.13.42.50.00.00.0
210.82.27.09.812.79.88.73.32.10.00.00.0
220.21.28.715.712.111.78.02.82.80.00.00.0
230.81.99.617.013.59.84.12.14.10.00.00.0
241.32.311.016.414.49.212.71.60.00.00.0
251.74.110.418.712.74.714.45.70.00.00.0
260.83.713.119.811.71.414.13.50.00.00.0
271.23.610.320.713.23.612.96.40.00.00.00.0
280.24.06.716.97.58.09.27.32.10.00.00.0
290.36.211.416.93.510.64.04.11.50.00.00.0
300.19.710.78.99.14.93.81.90.00.00.0
313.218.37.99.61.30.00.0
2023/2024
Day Sep
°F
Oct
°F
Nov
°F
Dec
°F
Jan
°F
Feb
°F
Mar
°F
Apr
°F
May
°F
Jun
°F
Jul
°F
Aug
°F
178.2
83.9/72.5
74.5
89.7/59.4
66.9
79.4/54.5
48.8
54.2/43.4
49.6
66.7/32.5
61.6
76.0/47.1
56.9
73.7/40.0
48.8
52.3/45.3
69.4
86.8/51.9
80.3
99.8/60.8
86.8
98.0/75.6
85.9
97.1/74.7
282.1
94.3/70.0
71.7
85.4/58.0
63.2
81.9/44.5
47.5
60.7/34.2
49.5
60.2/38.7
49.7
54.1/45.3
58.0
74.7/41.3
53.3
66.4/40.3
69.2
85.9/52.5
78.7
97.0/60.4
89.1
101.3/77.0
91.2
103.6/78.8
383.6
94.6/72.6
68.9
84.6/53.2
63.9
84.8/42.9
49.3
66.6/32.0
48.7
65.1/32.3
48.0
56.8/39.3
55.1
69.0/41.1
59.0
75.5/42.6
71.0
87.4/54.6
78.9
96.5/61.4
88.3
101.8/74.8
90.5
104.3/76.8
483.5
96.4/70.6
69.6
88.3/50.8
65.4
88.7/42.0
50.8
69.0/32.7
42.8
49.6/36.1
52.3
68.5/36.1
54.4
68.0/40.7
64.9
84.1/45.7
70.1
87.4/52.8
80.7
96.6/64.8
90.9
102.6/79.2
90.5
104.1/76.9
581.8
98.6/65.1
73.8
96.0/51.5
69.8
91.4/48.2
58.4
80.4/36.4
43.1
53.3/32.9
57.1
73.5/40.8
56.8
71.9/41.6
62.9
75.5/50.2
70.1
86.9/53.3
81.4
101.5/61.4
92.0
107.3/76.7
90.4
101.5/79.3
683.0
101.7/64.3
79.4
98.3/60.6
70.3
89.0/51.6
63.9
81.4/46.4
42.7
56.3/29.1
61.8
71.4/52.2
56.7
67.2/46.2
52.6
60.3/44.9
64.9
78.2/51.6
85.5
104.1/66.8
89.4
104.6/74.3
88.5
100.0/76.9
784.2
100.8/67.6
84.7
92.6/76.8
69.4
88.7/50.1
57.2
75.1/39.3
43.7
54.8/32.6
46.8
52.8/40.7
47.9
57.9/37.9
53.2
71.1/35.3
65.0
85.3/44.6
88.2
106.1/70.2
93.3
104.9/81.7
83.7
91.3/76.1
887.5
102.7/72.4
83.3
95.4/71.2
61.3
76.7/45.9
51.7
68.4/34.9
36.3
44.6/28.0
46.3
58.7/33.9
50.5
59.3/41.8
55.4
66.6/44.2
68.8
86.1/51.5
83.8
101.1/66.5
91.1
108.1/74.1
84.3
95.0/73.5
988.4
104.9/71.8
78.4
91.4/65.5
55.0
70.6/39.3
47.4
64.6/30.1
37.6
52.8/22.5
46.1
56.8/35.4
53.2
67.3/39.0
60.1
73.0/47.2
67.6
82.9/52.3
82.7
98.4/66.9
94.7
108.0/81.3
84.5
98.6/70.5
1090.5
106.8/74.2
73.9
90.4/57.5
53.6
70.6/36.6
58.1
71.4/44.9
42.3
60.1/24.6
42.4
46.7/38.0
60.9
74.2/47.7
61.8
79.8/43.7
67.7
86.3/49.1
81.5
99.8/63.2
89.0
105.8/72.2
87.7
98.4/76.9
1187.6
98.7/76.5
75.4
92.2/58.6
59.9
74.7/45.1
54.0
77.3/30.7
42.5
51.7/33.2
44.5
54.2/34.7
58.6
75.8/41.5
66.5
88.3/44.6
67.1
85.0/49.2
84.7
105.4/64.1
91.9
105.5/78.2
85.4
94.4/76.3
1280.4
89.2/71.6
70.5
82.5/58.5
62.1
78.0/46.2
58.8
77.0/40.5
40.4
57.1/23.8
48.5
66.8/30.3
58.1
74.0/42.2
68.1
85.2/50.9
67.9
85.0/50.9
85.3
104.7/65.9
90.1
106.0/74.3
84.6
95.4/73.7
1379.6
87.4/71.7
70.4
85.9/55.0
68.9
79.7/58.1
51.7
68.9/34.6
44.4
64.6/24.1
51.1
70.2/31.9
57.4
71.1/43.7
66.6
83.5/49.8
71.6
90.3/52.8
86.0
101.1/70.9
88.9
105.6/72.1
86.2
96.9/75.4
1480.0
94.2/65.8
72.0
88.2/55.8
71.4
81.8/60.9
47.2
64.9/29.6
49.2
66.2/32.3
51.7
67.9/35.5
57.1
71.3/42.9
67.4
84.4/50.4
74.0
92.0/56.1
84.9
100.3/69.5
87.7
99.1/76.2
86.8
98.6/75.0
1579.9
96.7/63.0
75.9
97.5/54.4
69.6
84.1/55.1
50.7
73.2/28.2
47.8
65.7/29.9
52.9
71.2/34.6
55.2
63.1/47.2
58.5
70.3/46.6
72.8
88.6/56.9
82.1
103.3/60.9
84.3
96.5/72.2
88.0
102.2/73.8
1678.9
97.5/60.2
79.9
98.1/61.6
69.1
78.8/59.5
57.6
74.1/41.1
49.0
67.1/30.9
51.7
68.2/35.2
52.5
63.6/41.3
62.7
81.6/43.9
71.8
84.7/58.8
85.7
104.4/67.0
86.2
97.6/74.8
91.7
102.4/80.9
1782.6
99.1/66.1
78.8
93.7/64.0
69.4
77.8/61.0
62.1
81.3/42.9
51.3
71.0/31.6
54.3
71.3/37.3
50.9
64.5/37.3
66.3
85.9/46.7
74.6
91.9/57.4
85.6
101.7/69.5
89.5
101.8/77.3
89.6
101.4/77.8
1880.1
96.9/63.2
76.6
94.2/59.1
65.0
75.3/54.7
60.5
80.3/40.7
55.4
73.4/37.5
55.8
72.7/38.8
56.9
74.2/39.6
68.4
88.2/48.6
77.7
95.7/59.7
81.3
98.8/63.9
88.6
103.4/73.7
85.7
96.2/75.2
1978.5
96.0/60.9
76.9
99.0/54.8
60.4
68.8/51.9
61.4
74.4/48.5
55.9
75.8/36.1
57.1
74.0/40.1
57.2
70.8/43.7
71.6
90.1/53.1
74.9
92.3/57.5
84.7
101.9/67.5
89.4
102.7/76.2
89.4
102.4/76.5
2075.0
89.7/60.4
77.7
98.5/56.9
54.4
66.1/42.7
60.9
74.0/47.7
56.3
72.7/39.8
59.4
79.8/39.0
57.3
70.8/43.8
69.4
87.4/51.5
71.7
88.3/55.1
87.9
105.2/70.5
87.7
102.1/73.3
87.1
101.3/73.0
2177.9
94.0/61.8
75.7
95.4/56.0
59.3
69.9/48.7
57.5
74.1/40.9
52.3
56.0/48.7
56.1
68.7/43.5
58.5
73.8/43.2
71.4
90.8/51.9
73.4
90.4/56.5
93.2
102.6/83.8
78.2
80.8/75.7
83.7
90.5/76.9
2280.1
95.9/64.3
76.4
92.7/60.2
58.3
73.0/43.6
49.3
53.6/45.1
53.0
59.3/46.6
53.9
67.5/40.3
60.5
79.0/42.0
73.5
93.2/53.8
72.3
90.9/53.6
83.9
97.3/70.6
86.8
101.1/72.4
84.1
92.8/75.3
2377.7
93.6/61.9
72.3
87.0/57.5
57.5
73.5/41.5
48.0
52.7/43.3
51.5
57.2/45.9
57.4
74.0/40.9
63.1
73.8/52.4
72.6
88.6/56.5
64.1
78.0/50.3
86.8
97.8/75.8
90.0
103.2/76.9
84.0
96.6/71.5
2476.9
94.1/59.7
65.2
74.6/55.9
55.6
71.3/39.9
48.6
58.1/39.1
50.7
56.3/45.0
59.2
78.7/39.8
52.3
59.8/44.8
71.0
83.2/58.7
88.6
97.7/79.6
90.1
102.8/77.5
84.7
96.0/73.5
2578.4
98.6/58.3
63.8
76.2/51.3
54.6
61.5/47.7
46.3
60.4/32.3
52.3
62.7/41.9
64.8
83.3/46.4
50.6
59.9/41.3
62.0
76.0/48.1
88.4
99.7/77.1
82.1
86.0/78.2
85.7
99.3/72.2
2681.0
100.1/62.0
64.9
79.4/50.5
53.0
69.4/36.7
45.2
59.7/30.6
53.3
61.6/45.1
65.3
71.3/59.3
50.9
57.9/44.0
65.1
79.2/51.0
89.7
100.0/79.4
92.3
98.9/85.7
84.2
97.6/70.8
2780.3
100.5/60.0
66.7
82.9/50.6
56.1
70.8/41.4
44.3
60.8/27.7
52.9
69.6/36.3
62.5
69.5/55.5
53.2
69.2/37.1
60.3
71.9/48.7
85.9
96.7/75.0
91.5
102.4/80.6
87.8
98.7/76.9
86.6
98.7/74.5
2881.4
98.5/64.3
65.8
82.5/49.1
61.0
76.0/46.0
48.6
66.7/30.5
59.7
74.0/45.5
57.3
66.6/48.1
58.4
75.6/41.3
60.9
78.0/43.9
77.6
98.7/56.4
89.8
99.9/79.8
84.0
96.5/71.5
84.6
92.2/77.0
2980.5
97.3/63.7
61.1
74.2/48.1
55.0
70.4/39.6
49.2
69.6/28.9
65.3
79.5/51.2
55.0
67.6/42.5
64.8
80.2/49.5
67.4
86.1/48.6
77.5
96.0/58.9
88.0
97.5/78.5
85.5
96.7/74.3
84.0
99.0/69.1
3079.4
94.3/64.5
56.7
70.7/42.7
54.3
58.9/49.7
58.5
74.5/42.4
58.6
75.7/41.5
63.8
79.9/47.8
69.7
89.7/49.8
77.1
96.8/57.5
89.2
99.2/79.1
87.5
97.4/77.6
83.5
99.9/67.1
3163.7
72.6/54.8
46.7
61.1/32.2
59.7
75.6/43.8
55.4
64.4/46.4
79.5
99.1/60.0
85.6
95.5/75.7
85.2
98.9/71.6
2024/2025
Day
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
10.00.017.17.213.516.58.52.4
20.00.09.913.112.38.0
30.01.113.65.111.410.415.1
40.01.213.012.710.38.29.212.1
50.00.013.611.916.010.511.214.4
60.01.613.43.915.910.53.24.5
70.00.021.57.913.211.017.79.9
80.00.318.212.820.210.713.40.9
90.00.614.213.423.59.912.44.4
100.00.011.415.519.76.63.14.0
110.10.88.017.722.39.47.83.5
120.01.411.79.224.210.56.72.5
130.01.512.412.725.510.88.52.4
140.01.210.014.825.513.819.91.1
150.01.99.813.017.713.52.5
160.02.412.014.34.97.912.61.8
170.01.117.913.616.710.37.01.8
180.92.515.412.820.39.98.17.4
191.111.016.46.433.011.913.08.4
201.39.710.010.711.911.68.7
210.015.012.712.110.610.35.3
222.73.510.813.720.317.37.33.7
231.93.59.36.520.03.05.02.8
240.33.99.011.514.79.34.53.7
250.03.89.411.012.08.53.83.4
260.03.39.315.712.06.70.6
270.02.55.115.419.87.03.0
280.03.08.514.824.811.73.1
290.02.710.610.619.32.3
300.010.912.69.520.27.8
3110.412.319.96.2
2024/2025
Day Sep
°F
Oct
°F
Nov
°F
Dec
°F
Jan
°F
Feb
°F
Mar
°F
Apr
°F
May
°F
Jun
°F
Jul
°F
Aug
°F
183.9
96.7/71.1
85.5
103.9/67.1
47.9
49.6/46.2
64.9
93.2/36.6
54.6
77.2/31.9
48.6
60.4/36.7
60.3
80.3/40.4
64.7
73.2/56.2
285.9
94.4/77.5
86.3
98.6/74.1
59.3
81.7/36.9
55.1
77.7/32.5
53.1
66.2/39.9
57.0
64.0/50.0
385.8
95.7/75.9
80.6
100.3/60.8
51.4
52.2/50.6
65.1
85.4/44.8
57.8
81.8/33.7
55.7
69.7/41.8
49.9
62.3/37.6
487.7
101.2/74.3
81.6
102.7/60.4
52.0
60.5/43.5
54.9
75.4/34.5
57.8
77.4/38.2
58.2
70.6/45.8
55.8
63.7/47.8
52.9
59.7/46.1
587.4
104.6/70.2
84.1
102.3/65.9
52.5
69.3/35.7
56.2
77.5/34.9
50.0
69.0/31.0
55.5
68.7/42.3
56.7
76.3/37.0
50.6
64.4/36.8
692.0
100.7/83.2
80.4
102.0/58.7
51.6
64.9/38.4
62.6
70.8/54.3
51.0
72.5/29.4
55.8
70.2/41.4
62.3
67.1/57.6
62.5
72.8/52.1
787.8
96.1/79.5
83.2
101.4/65.0
43.5
55.2/31.8
59.9
76.1/43.7
53.4
71.4/35.4
54.8
68.1/41.4
47.3
52.7/41.9
56.9
72.0/41.8
889.8
98.1/81.5
82.2
100.8/63.7
46.9
62.9/30.8
54.9
75.7/34.1
44.8
50.8/38.8
55.2
68.5/41.8
51.6
61.0/42.2
73.8
86.2/61.5
988.0
99.5/76.4
80.4
98.0/62.7
52.6
72.3/32.9
53.7
73.5/34.0
41.5
52.6/30.4
57.3
73.9/40.8
54.9
74.4/35.5
68.6
89.9/47.3
1083.6
101.4/65.8
83.8
98.7/68.8
57.5
80.7/34.4
49.8
65.9/33.6
45.3
55.0/35.6
59.5
69.5/49.6
66.2
79.9/52.6
70.9
92.8/49.0
1182.8
101.1/64.4
80.7
99.7/61.6
60.6
79.4/41.9
49.2
72.6/25.8
42.7
58.9/26.4
56.8
69.6/44.0
59.5
74.2/44.8
74.0
96.9/51.1
1283.3
99.1/67.5
79.0
98.8/59.2
54.7
70.3/39.1
58.6
76.3/41.0
40.8
58.1/23.5
54.6
64.2/44.9
59.4
69.2/49.6
75.1
95.3/54.9
1380.9
96.6/65.2
79.0
99.2/58.9
56.1
78.7/33.5
54.3
73.3/35.4
39.5
56.0/23.0
55.4
69.7/41.0
57.7
69.9/45.5
73.0
90.4/55.5
1484.1
96.3/72.0
77.4
94.7/60.1
60.1
85.4/34.8
52.6
74.3/30.8
39.5
59.2/19.7
51.3
52.7/49.8
45.1
49.3/41.0
73.8
86.9/60.7
1583.6
94.9/72.4
74.3
91.4/57.3
57.9
75.8/40.1
54.7
75.8/33.6
48.1
68.1/28.0
51.5
58.4/44.6
73.1
91.2/55.0
1682.0
92.1/71.8
74.6
93.8/55.4
53.0
60.7/45.3
54.1
78.3/29.8
61.7
71.3/52.1
58.9
72.2/45.6
54.4
73.0/35.8
73.5
89.0/58.0
1781.6
89.5/73.6
73.7
86.8/60.6
47.1
59.2/35.1
54.2
76.3/32.2
48.3
59.9/36.7
57.2
75.0/39.5
63.1
85.3/40.9
68.1
78.2/57.9
1876.3
91.0/61.5
66.6
78.3/54.8
49.6
63.3/36.0
56.3
81.0/31.5
44.7
60.4/28.9
56.6
71.3/42.0
56.9
62.4/51.5
59.4
72.1/46.7
1976.4
92.3/60.5
55.1
69.1/41.0
50.5
72.2/28.7
62.6
81.0/44.2
32.0
35.5/28.5
55.5
74.4/36.6
52.9
68.4/37.4
56.8
65.6/48.0
2075.4
90.9/59.8
58.4
77.4/39.3
57.8
76.3/39.3
58.6
82.2/35.0
55.0
72.8/37.2
56.5
77.6/35.5
59.9
79.3/40.5
2176.0
82.9/69.1
50.0
52.9/47.1
56.9
83.5/30.3
57.1
81.9/32.3
54.4
61.9/47.0
57.9
77.7/38.0
65.4
86.8/44.0
2272.0
89.8/54.3
72.3
93.7/50.9
59.2
85.3/33.2
54.8
79.3/30.4
44.7
55.8/33.6
47.7
48.0/47.4
61.7
81.0/42.5
68.3
86.3/50.2
2376.6
95.9/57.2
73.7
96.6/50.9
61.5
88.1/34.8
62.0
79.0/44.9
45.1
60.8/29.3
64.7
75.9/53.5
64.1
81.2/47.0
69.7
85.8/53.7
2481.5
99.4/63.7
70.9
92.3/49.4
60.3
82.4/38.3
57.2
79.7/34.7
50.3
54.8/45.8
59.8
81.3/38.3
67.1
86.9/47.2
67.8
85.5/50.0
2584.0
103.2/64.8
72.5
95.0/50.0
58.7
77.3/40.0
55.9
72.6/39.3
53.0
63.6/42.4
60.7
82.0/39.4
71.3
92.8/49.8
65.5
79.4/51.6
2686.4
104.2/68.6
74.2
96.4/52.0
59.7
80.8/38.6
49.5
66.0/33.1
53.3
66.2/40.3
62.2
80.6/43.8
74.9
87.4/62.4
2786.5
105.5/67.5
74.9
95.0/54.8
62.3
74.8/49.8
51.1
71.1/31.1
45.2
60.0/30.5
61.1
77.1/45.1
69.2
85.4/53.1
2887.4
104.4/70.4
70.4
87.8/52.9
58.7
73.9/43.5
52.9
75.8/30.0
40.2
45.7/34.6
55.4
73.5/37.3
68.4
84.1/52.7
2994.5
102.2/86.9
63.7
70.5/56.9
57.3
76.4/38.1
58.7
82.0/35.3
45.7
53.5/38.0
67.1
78.3/55.8
3084.7
101.4/68.0
55.1
69.3/41.0
52.4
59.3/45.5
61.1
87.4/34.7
44.8
53.5/36.1
60.0
76.3/43.7
3158.1
79.0/37.2
56.2
78.9/33.5
45.2
56.6/33.7
61.7
76.7/46.7


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