Ranked from NOAA 1991-2020 Climate Normals
Highest Cooling Demand in Massachusetts
Cooling degree days are the mirror of heating degree days: how far and how long the temperature sits above 65°F. In the counties at the top of this list, cooling is the largest single line on the summer electricity bill. Figures are NOAA 1991-2020 Climate Normals from the weather station nearest each county seat, so they describe a thirty-year average rather than any single year.
Massachusetts ranked
| # | County | Cooling degree days | Summer high | Monthly to own |
|---|---|---|---|---|
| 1 | Norfolk County | 828 | 85.7°F | $5,007 |
| 2 | Plymouth County | 805 | 84.0°F | $4,069 |
| 3 | Suffolk County | 802 | 82.1°F | $4,997 |
| 4 | Middlesex County | 743 | 85.1°F | $5,264 |
| 5 | Hampden County | 677 | 84.9°F | $2,379 |
| 6 | Hampshire County | 677 | 84.9°F | $3,022 |
| 7 | Barnstable County | 632 | 80.8°F | $4,286 |
| 8 | Essex County | 611 | 81.8°F | $4,519 |
| 9 | Bristol County | 577 | 82.5°F | $3,345 |
| 10 | Franklin County | 519 | 82.7°F | $2,576 |
| 11 | Worcester County | 503 | 79.8°F | $3,188 |
| 12 | Dukes County | 449 | 79.1°F | $7,800 |
| 13 | Berkshire County | 344 | 79.3°F | $2,391 |
| 14 | Nantucket County | 343 | 75.7°F | $9,409 |
Every figure is modelled on the county's own median home with 20% down at 7.03%. Property tax and electricity are county and state specific; homeowners insurance uses the NAIC average premium for that state, which ranges from 0.16% of home value in Hawaii to 1.16% in Oklahoma. Maintenance and water are national estimates. Full methodology.
Nationwide
Highest Cooling Demand across all 3,133 US counties · Every county in Massachusetts