Ranked from NOAA 1991-2020 Climate Normals
Hottest Summers in Tennessee
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.
Where does yours land?
Every county in America is somewhere on this scale, including the one you live in.
Tennessee ranked
| # | County | Summer high | Cooling degree days | Monthly to own |
|---|---|---|---|---|
| 1 | Shelby County | 91.9°F | 2,314 | $1,938 |
| 2 | Hardin County | 91.3°F | 1,930 | $1,297 |
| 3 | Marshall County | 91.0°F | 1,568 | $1,960 |
| 4 | Davidson County | 90.9°F | 1,873 | $2,974 |
| 5 | Decatur County | 90.9°F | 1,743 | $1,163 |
| 6 | Williamson County | 90.8°F | 1,686 | $4,909 |
| 7 | Haywood County | 90.7°F | 1,955 | $1,086 |
| 8 | Madison County | 90.6°F | 1,790 | $1,574 |
| 9 | Hamilton County | 90.5°F | 1,921 | $2,243 |
| 10 | Marion County | 90.5°F | 1,921 | $1,435 |
| 11 | Fayette County | 90.4°F | 1,871 | $2,401 |
| 12 | McNairy County | 90.3°F | 1,782 | $1,271 |
| 13 | Gibson County | 90.2°F | 1,766 | $1,298 |
| 14 | Wilson County | 90.2°F | 1,670 | $2,989 |
| 15 | Dyer County | 90.1°F | 1,830 | $1,358 |
| 16 | Lake County | 90.1°F | 1,830 | $995 |
| 17 | Monroe County | 90.0°F | 1,492 | $1,617 |
| 18 | Clay County | 89.9°F | 1,357 | $1,199 |
| 19 | Jackson County | 89.9°F | 1,357 | $1,173 |
| 20 | Lauderdale County | 89.8°F | 1,757 | $1,099 |
| 21 | Benton County | 89.5°F | 1,732 | $1,100 |
| 22 | Cannon County | 89.5°F | 1,429 | $1,818 |
| 23 | Hardeman County | 89.5°F | 1,652 | $1,060 |
| 24 | Humphreys County | 89.5°F | 1,732 | $1,533 |
| 25 | Bedford County | 89.4°F | 1,602 | $2,015 |
| 26 | Henderson County | 89.4°F | 1,604 | $1,316 |
| 27 | Moore County | 89.3°F | 1,392 | $2,040 |
| 28 | Carroll County | 89.2°F | 1,656 | $1,099 |
| 29 | Lawrence County | 89.2°F | 1,651 | $1,469 |
| 30 | Rutherford County | 89.2°F | 1,582 | $2,656 |
| 31 | Anderson County | 89.1°F | 1,629 | $1,760 |
| 32 | Bradley County | 89.0°F | 1,542 | $1,846 |
| 33 | Loudon County | 89.0°F | 1,536 | $2,252 |
| 34 | Polk County | 89.0°F | 1,542 | $1,190 |
| 35 | Smith County | 89.0°F | 1,456 | $1,793 |
| 36 | Tipton County | 89.0°F | 1,636 | $1,774 |
| 37 | Houston County | 88.9°F | 1,543 | $1,288 |
| 38 | Montgomery County | 88.9°F | 1,484 | $2,002 |
| 39 | Lincoln County | 88.8°F | 1,565 | $1,687 |
| 40 | Maury County | 88.8°F | 1,408 | $2,376 |
| 41 | Perry County | 88.7°F | 1,426 | $1,031 |
| 42 | Crockett County | 88.6°F | 1,680 | $1,182 |
| 43 | Warren County | 88.6°F | 1,565 | $1,437 |
| 44 | Chester County | 88.5°F | 1,410 | $1,319 |
| 45 | Robertson County | 88.5°F | 1,545 | $2,311 |
| 46 | Blount County | 88.4°F | 1,574 | $2,159 |
| 47 | Knox County | 88.4°F | 1,574 | $2,181 |
| 48 | McMinn County | 88.4°F | 1,479 | $1,540 |
| 49 | Obion County | 88.4°F | 1,526 | $1,093 |
| 50 | Wayne County | 88.4°F | 1,341 | $1,118 |
| 51 | Bledsoe County | 88.2°F | 1,430 | $1,373 |
| 52 | Henry County | 88.2°F | 1,471 | $1,242 |
| 53 | Weakley County | 88.2°F | 1,581 | $1,186 |
| 54 | Cocke County | 88.1°F | 1,412 | $1,237 |
| 55 | Giles County | 88.1°F | 1,267 | $1,651 |
| 56 | White County | 87.9°F | 1,370 | $1,548 |
| 57 | Stewart County | 87.8°F | 1,539 | $1,510 |
| 58 | DeKalb County | 87.7°F | 1,231 | $1,651 |
| 59 | Macon County | 87.7°F | 1,289 | $1,690 |
| 60 | Roane County | 87.7°F | 1,460 | $1,724 |
| 61 | Sumner County | 87.7°F | 1,289 | $2,788 |
| 62 | Trousdale County | 87.7°F | 1,289 | $2,199 |
| 63 | Cheatham County | 87.6°F | 1,328 | $2,271 |
| 64 | Meigs County | 87.6°F | 1,385 | $1,510 |
| 65 | Sequatchie County | 87.6°F | 1,554 | $1,744 |
| 66 | Franklin County | 87.3°F | 1,454 | $1,750 |
| 67 | Greene County | 87.3°F | 1,182 | $1,522 |
| 68 | Putnam County | 87.3°F | 1,270 | $1,961 |
| 69 | Overton County | 87.1°F | 1,277 | $1,415 |
| 70 | Hickman County | 87.0°F | 1,404 | $1,583 |
| 71 | Jefferson County | 87.0°F | 1,042 | $1,693 |
| 72 | Lewis County | 87.0°F | 1,404 | $1,333 |
| 73 | Dickson County | 86.9°F | 1,327 | $2,138 |
| 74 | Rhea County | 86.9°F | 1,246 | $1,472 |
| 75 | Coffee County | 86.4°F | 1,129 | $1,840 |
| 76 | Hamblen County | 86.4°F | 1,251 | $1,543 |
| 77 | Sullivan County | 86.4°F | 1,105 | $1,585 |
| 78 | Washington County | 86.4°F | 1,105 | $1,860 |
| 79 | Campbell County | 86.2°F | 1,075 | $1,398 |
| 80 | Morgan County | 85.9°F | 980 | $1,245 |
| 81 | Carter County | 85.5°F | 1,008 | $1,332 |
| 82 | Grainger County | 85.5°F | 1,314 | $1,433 |
| 83 | Hancock County | 85.5°F | 1,080 | $1,049 |
| 84 | Hawkins County | 85.5°F | 1,080 | $1,405 |
| 85 | Scott County | 85.4°F | 958 | $1,048 |
| 86 | Unicoi County | 85.4°F | 908 | $1,415 |
| 87 | Union County | 85.1°F | 974 | $1,514 |
| 88 | Van Buren County | 84.8°F | 864 | $1,259 |
| 89 | Claiborne County | 84.7°F | 893 | $1,263 |
| 90 | Pickett County | 84.5°F | 1,150 | $1,346 |
| 91 | Cumberland County | 83.2°F | 890 | $1,788 |
| 92 | Grundy County | 83.2°F | 818 | $1,153 |
| 93 | Sevier County | 82.9°F | 789 | $2,005 |
| 94 | Fentress County | 82.5°F | 892 | $1,270 |
| 95 | Johnson County | 82.0°F | 632 | $1,439 |
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 Tennessee