Daily Degree Days (18°C Base)
Report for Year 2026
Data last updated 1/24/2026 11:50 PM.
| 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 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 6 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 7 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 10 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 11 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 12 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 13 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 14 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 15 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 16 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 17 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 18 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 19 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 20 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 21 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 22 | --- | 2.4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 23 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 24 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 25 | 4.9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 26 | 5.5 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 27 | 5.3 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 28 | 4.9 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 29 | 2.4 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 30 | 4.2 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 31 | 2.9 | | --- | | --- | | --- | --- | | --- | | --- | 0.0 | | --- | | --- | | --- | --- | | --- | | --- |
| |
| | 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 | 5.5 | 2.4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | 0.0 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Avg | 4.3 | 2.4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.0 | 0.0 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Low | 2.4 | 2.4 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 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. |
