Ranked from NOAA 1991-2020 Climate Normals
Highest Cooling Demand in Louisiana
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.
Louisiana ranked
| # | County | Cooling degree days | Summer high | Monthly to own |
|---|---|---|---|---|
| 1 | Orleans Parish | 3,292 | 90.8°F | $2,520 |
| 2 | St. Charles Parish | 3,206 | 91.4°F | $2,160 |
| 3 | Calcasieu Parish | 3,063 | 92.8°F | $1,773 |
| 4 | Cameron Parish | 3,063 | 92.8°F | $1,585 |
| 5 | Plaquemines Parish | 3,048 | 88.8°F | $2,278 |
| 6 | Natchitoches Parish | 3,012 | 95.7°F | $1,438 |
| 7 | Terrebonne Parish | 2,969 | 91.4°F | $1,630 |
| 8 | Pointe Coupee Parish | 2,940 | 92.4°F | $1,496 |
| 9 | West Feliciana Parish | 2,940 | 92.4°F | $2,196 |
| 10 | Caddo Parish | 2,894 | 95.0°F | $1,555 |
| 11 | Lafourche Parish | 2,886 | 89.4°F | $1,650 |
| 12 | St. James Parish | 2,870 | 91.6°F | $1,707 |
| 13 | St. John the Baptist Parish | 2,870 | 91.6°F | $1,592 |
| 14 | Madison Parish | 2,856 | 94.8°F | $879 |
| 15 | East Baton Rouge Parish | 2,818 | 92.2°F | $2,060 |
| 16 | Livingston Parish | 2,818 | 92.2°F | $1,859 |
| 17 | West Baton Rouge Parish | 2,818 | 92.2°F | $1,930 |
| 18 | Acadia Parish | 2,781 | 91.5°F | $1,297 |
| 19 | St. Bernard Parish | 2,749 | 90.7°F | $1,661 |
| 20 | Evangeline Parish | 2,718 | 93.0°F | $1,086 |
| 21 | Lafayette Parish | 2,716 | 91.6°F | $1,988 |
| 22 | Ascension Parish | 2,705 | 90.8°F | $2,216 |
| 23 | Assumption Parish | 2,705 | 90.8°F | $1,271 |
| 24 | St. Landry Parish | 2,698 | 92.0°F | $1,267 |
| 25 | Richland Parish | 2,675 | 93.6°F | $1,138 |
| 26 | Jefferson Davis Parish | 2,667 | 91.0°F | $1,281 |
| 27 | St. Tammany Parish | 2,634 | 91.2°F | $2,314 |
| 28 | Washington Parish | 2,622 | 92.4°F | $1,248 |
| 29 | Grant Parish | 2,619 | 93.5°F | $1,254 |
| 30 | Rapides Parish | 2,619 | 93.5°F | $1,573 |
| 31 | Jefferson Parish | 2,615 | 89.9°F | $2,049 |
| 32 | Beauregard Parish | 2,610 | 92.5°F | $1,430 |
| 33 | Iberville Parish | 2,563 | 91.8°F | $1,522 |
| 34 | Iberia Parish | 2,558 | 90.1°F | $1,370 |
| 35 | St. Martin Parish | 2,558 | 90.1°F | $1,340 |
| 36 | St. Mary Parish | 2,558 | 90.1°F | $1,169 |
| 37 | Webster Parish | 2,521 | 94.7°F | $1,001 |
| 38 | Franklin Parish | 2,495 | 93.6°F | $1,082 |
| 39 | Ouachita Parish | 2,495 | 93.6°F | $1,600 |
| 40 | Vermilion Parish | 2,491 | 90.2°F | $1,396 |
| 41 | Tangipahoa Parish | 2,467 | 91.8°F | $1,742 |
| 42 | St. Helena Parish | 2,459 | 91.6°F | $1,011 |
| 43 | Vernon Parish | 2,453 | 93.6°F | $1,301 |
| 44 | Caldwell Parish | 2,448 | 93.1°F | $999 |
| 45 | Avoyelles Parish | 2,428 | 93.6°F | $1,092 |
| 46 | De Soto Parish | 2,416 | 93.4°F | $1,326 |
| 47 | Allen Parish | 2,411 | 91.1°F | $1,021 |
| 48 | Tensas Parish | 2,398 | 93.3°F | $808 |
| 49 | Union Parish | 2,380 | 92.6°F | $1,076 |
| 50 | Bienville Parish | 2,376 | 93.4°F | $908 |
| 51 | Winn Parish | 2,376 | 93.2°F | $974 |
| 52 | East Carroll Parish | 2,346 | 91.2°F | $860 |
| 53 | West Carroll Parish | 2,346 | 91.2°F | $928 |
| 54 | Bossier Parish | 2,322 | 93.0°F | $1,858 |
| 55 | Jackson Parish | 2,300 | 92.6°F | $1,010 |
| 56 | Lincoln Parish | 2,300 | 92.6°F | $1,685 |
| 57 | LaSalle Parish | 2,297 | 91.7°F | $1,240 |
| 58 | Catahoula Parish | 2,289 | 90.7°F | $865 |
| 59 | Concordia Parish | 2,289 | 90.7°F | $978 |
| 60 | East Feliciana Parish | 2,222 | 90.2°F | $1,760 |
| 61 | Sabine Parish | 2,204 | 91.9°F | $1,178 |
| 62 | Red River Parish | 2,203 | 93.0°F | $997 |
| 63 | Morehouse Parish | 2,106 | 90.6°F | $1,029 |
| 64 | Claiborne Parish | 2,010 | 92.0°F | $829 |
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 Louisiana