Ranked from NOAA 1991-2020 Climate Normals
Hottest Summers in Washington
Average daily high in the hottest month of the year, by county. Read it next to the cooling degree days in the same row: the two together are what the summer electricity bill is actually made of. 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.
Washington ranked
| # | County | Summer high | Cooling degree days | Monthly to own |
|---|---|---|---|---|
| 1 | Benton County | 92.5°F | 788 | $2,786 |
| 2 | Asotin County | 90.8°F | 913 | $2,208 |
| 3 | Walla Walla County | 90.1°F | 936 | $2,864 |
| 4 | Yakima County | 89.9°F | 606 | $2,177 |
| 5 | Franklin County | 89.6°F | 610 | $2,613 |
| 6 | Okanogan County | 89.4°F | 703 | $2,188 |
| 7 | Douglas County | 89.3°F | 843 | $3,019 |
| 8 | Grant County | 89.3°F | 843 | $2,140 |
| 9 | Adams County | 89.2°F | 590 | $1,972 |
| 10 | Columbia County | 87.6°F | 564 | $2,012 |
| 11 | Spokane County | 87.1°F | 507 | $2,817 |
| 12 | Kittitas County | 86.5°F | 568 | $3,386 |
| 13 | Stevens County | 86.3°F | 261 | $2,323 |
| 14 | Klickitat County | 86.1°F | 323 | $2,865 |
| 15 | Lincoln County | 85.4°F | 290 | $2,064 |
| 16 | Garfield County | 85.1°F | 396 | $1,671 |
| 17 | Pend Oreille County | 84.2°F | 217 | $2,324 |
| 18 | Ferry County | 84.1°F | 167 | $2,093 |
| 19 | Whitman County | 83.4°F | 284 | $2,466 |
| 20 | Cowlitz County | 82.3°F | 427 | $2,779 |
| 21 | Chelan County | 81.9°F | 219 | $3,353 |
| 22 | Skamania County | 81.8°F | 207 | $3,477 |
| 23 | Clark County | 79.6°F | 164 | $3,632 |
| 24 | Lewis County | 78.0°F | 113 | $2,569 |
| 25 | Thurston County | 78.0°F | 113 | $3,399 |
| 26 | Whatcom County | 77.8°F | 126 | $3,915 |
| 27 | Kitsap County | 77.3°F | 193 | $3,740 |
| 28 | Wahkiakum County | 77.3°F | 112 | $2,559 |
| 29 | King County | 76.7°F | 151 | $5,901 |
| 30 | Skagit County | 76.7°F | 137 | $3,615 |
| 31 | Pierce County | 76.5°F | 120 | $3,649 |
| 32 | Mason County | 75.6°F | 123 | $2,830 |
| 33 | San Juan County | 73.3°F | 32 | $5,145 |
| 34 | Snohomish County | 73.0°F | 97 | $4,709 |
| 35 | Pacific County | 72.8°F | 44 | $2,128 |
| 36 | Island County | 70.5°F | 22 | $3,905 |
| 37 | Clallam County | 69.7°F | 23 | $2,884 |
| 38 | Jefferson County | 69.7°F | 23 | $3,637 |
| 39 | Grays Harbor County | 68.1°F | 26 | $2,178 |
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
Hottest Summers across all 3,133 US counties · Every county in Washington