Daily Degree Days (18°C Base)
Report for Year 2025
Note: Data is updated after midnight each day.
| Day | Heating Degree Days | Cooling Degree Days |
|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| 1 | 15.4 | 16.3 | 13.5 | 8.6 | 6.9 | 3.9 | 2.5 | 0.0 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | --- | --- | --- | --- |
| 2 | 20.2 | 13.4 | 12.3 | 9.4 | 8.7 | 6.4 | 3.2 | 0.9 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- |
| 3 | 20.5 | 12.4 | 11.6 | 10.2 | 8.9 | 6.2 | 3.7 | 2.3 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- |
| 4 | 19.3 | 11.0 | 11.1 | 10.7 | 9.7 | 5.8 | 4.1 | 2.8 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- |
| 5 | 16.7 | 11.9 | 10.9 | 11.9 | 9.9 | 6.9 | 3.9 | 4.8 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- |
| 6 | 16.3 | 15.2 | 10.4 | 12.0 | 9.2 | 7.1 | 3.6 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 7 | 15.5 | 16.6 | 10.3 | 11.1 | 7.8 | 6.4 | 3.4 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 8 | 17.6 | 15.2 | 11.3 | 11.8 | 7.0 | 7.2 | 1.2 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 9 | 17.3 | 17.4 | 13.3 | 9.5 | 6.6 | 6.4 | 1.7 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 10 | 20.2 | 16.3 | 14.1 | 11.6 | 5.8 | 6.1 | 1.1 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 11 | 22.2 | 14.2 | 14.1 | 9.7 | 5.8 | 5.5 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.1 | --- | --- | --- | --- | --- |
| 12 | 20.0 | 17.5 | 14.8 | 7.9 | 5.1 | 3.7 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.3 | --- | --- | --- | --- | --- |
| 13 | 12.4 | 17.5 | 16.4 | 7.2 | 5.7 | 0.0 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.2 | 2.1 | --- | --- | --- | --- | --- |
| 14 | 10.3 | 17.0 | 16.4 | 9.0 | 5.8 | 0.0 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.3 | 2.6 | --- | --- | --- | --- | --- |
| 15 | 10.8 | 16.4 | 14.1 | 6.2 | 4.6 | 0.0 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.9 | --- | --- | --- | --- | --- |
| 16 | 10.7 | 22.0 | 13.3 | 4.1 | 4.8 | 4.7 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.9 | --- | --- | --- | --- | --- |
| 17 | 10.2 | 21.2 | 14.9 | 8.2 | 4.1 | 4.0 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.4 | --- | --- | --- | --- | --- |
| 18 | 11.3 | 19.8 | 12.9 | 8.5 | 3.3 | 5.0 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.4 | --- | --- | --- | --- | --- |
| 19 | 14.2 | 16.8 | 14.0 | 7.3 | 2.6 | 4.6 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.6 | --- | --- | --- | --- | --- |
| 20 | 16.4 | 14.3 | 13.8 | 7.4 | 5.1 | 3.9 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 5.8 | --- | --- | --- | --- | --- |
| 21 | 14.9 | 9.5 | 10.0 | 8.2 | 8.1 | 1.8 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.6 | --- | --- | --- | --- | --- |
| 22 | 15.1 | 9.5 | 8.3 | 8.8 | 7.7 | 0.2 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.3 | --- | --- | --- | --- | --- |
| 23 | 15.3 | 9.8 | 8.6 | 7.6 | 7.2 | 3.9 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.5 | --- | --- | --- | --- | --- |
| 24 | 13.3 | 10.3 | 11.0 | 9.3 | 7.7 | 5.7 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.1 | --- | --- | --- | --- | --- |
| 25 | 11.6 | 11.8 | 10.8 | 9.6 | 5.5 | 3.5 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | --- | --- | --- | --- | --- |
| 26 | 13.1 | 12.3 | 10.8 | 9.6 | 6.6 | 4.0 | 0.2 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 27 | 13.3 | 13.7 | 10.2 | 7.5 | 6.8 | 3.0 | 0.0 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 28 | 11.7 | 15.1 | 9.6 | 7.4 | 5.8 | 1.7 | 0.6 | --- | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 29 | 12.4 | | 11.3 | 8.2 | 6.0 | 4.1 | 0.1 | --- | --- | --- | --- | --- | 0.0 | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | --- |
| 30 | 15.1 | | 11.0 | 6.3 | 5.9 | 2.3 | 0.0 | --- | --- | --- | --- | --- | 0.0 | | 0.0 | 0.0 | 0.0 | 0.0 | 0.9 | --- | --- | --- | --- | --- |
| 31 | 16.8 | | 11.4 | | 6.3 | | 0.0 | --- | | --- | | --- | 0.0 | | 0.0 | | 0.0 | | 0.6 | --- | | --- | | --- |
| |
| | Heating Degree Days | Cooling Degree Days |
|---|
| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| High | 22.2 | 22.0 | 16.4 | 12.0 | 9.9 | 7.2 | 4.1 | 4.8 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.3 | 5.8 | 0.3 | --- | --- | --- | --- |
| Avg | 15.2 | 14.8 | 12.2 | 8.8 | 6.5 | 4.1 | 0.9 | 2.2 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.1 | 0.1 | --- | --- | --- | --- |
| Low | 10.2 | 9.5 | 8.3 | 4.1 | 2.6 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | --- | --- | --- | --- |
| |
| Color Key |
| < 5.0 | 5.0 - 10.0 | 10.0 - 15.0 | 15.0 - 20.0 | 20.0 - 25.0 | 25.0 - 30.0 | 30.0 - 35.0 | 35.0 - 40.0 | 40.0 - 45.0 | 45.0 - 50.0 | 50.0 - 55.0 | 55.0 - 60.0 | 60.0> |
| A Degree Day is a unit of measurement equal to a difference of one degree between the mean outdoor temperature and a reference temperature (18°C). Degree Days are used in estimating the energy needs for heating or cooling a building. |