Table A1.
Weather analysis by city using summer (June–August) weather data (CustomWeather, Inc., 271 Miller Avenue Mill Valley, CA, USA 94941) from 2000 to 2019.
| Metropolitan statistical area | Peak temperature (ºC) | Peak relative humidity (%) | Total days fans detrimental | Total days in analysis | Average detrimental days per summer | Detrimental days (%) |
|---|---|---|---|---|---|---|
| Phoenix, AZ | 48.3 | 6 | 801 | 1839 | 40.1 | 43.5 |
| Las Vegas, NV | 47.0 | 2 | 611 | 1747 | 30.6 | 35.0 |
| Tucson, AZ | 46.1 | 7 | 232 | 1839 | 11.6 | 12.6 |
| Fresno, CA | 44.4 | 19 | 74 | 1839 | 3.7 | 4.0 |
| Bakersfield, CA | 44.0 | 16 | 50 | 1839 | 2.5 | 2.7 |
| El Paso, TX | 43.0 | 10 | 38 | 1839 | 1.9 | 2.1 |
| Riverside, CA | 45.0 | 13 | 24 | 1839 | 1.2 | 1.3 |
| Stockton, CA | 46.0 | 16 | 19 | 1838 | 1.0 | 1.0 |
| Boise City, ID | 43.0 | 9 | 16 | 1839 | 0.8 | 0.9 |
| Sacramento, CA | 43.0 | 17 | 13 | 1839 | 0.7 | 0.7 |
| Tulsa, OK | 44.4 | 19 | 10 | 1839 | 0.5 | 0.5 |
| Oklahoma City, OK | 43.9 | 14 | 9 | 1839 | 0.5 | 0.5 |
| Wichita, KS | 43.3 | 19 | 8 | 1839 | 0.4 | 0.4 |
| Dallas, TX | 42.8 | 22 | 5 | 1839 | 0.3 | 0.3 |
| Austin, TX | 43.3 | 15 | 3 | 1839 | 0.2 | 0.2 |
| Salt Lake City, UT | 41.1 | 11 | 3 | 1839 | 0.2 | 0.2 |
| Billings, MT | 41.1 | 12 | 3 | 1839 | 0.2 | 0.2 |
| Little Rock, AR | 45.0 | 19 | 2 | 1839 | 0.1 | 0.1 |
| Denver, CO | 39.4 | 9 | 1 | 1839 | 0.1 | 0.1 |
| St. Louis, MO | 42.2 | 13 | 1 | 1839 | 0.1 | 0.1 |
| San Antonio, TX | 42.8 | 16 | 1 | 1839 | 0.1 | 0.1 |
| Albuquerque, NM | 40.0 | 5 | 1 | 1839 | 0.1 | 0.1 |
| McAllen, TX | 43.9 | 19 | 1 | 1839 | 0.1 | 0.1 |
| Columbia, OH | 42.2 | 17 | 1 | 1839 | 0.1 | 0.1 |
| Provo, UT | 41.0 | 9 | 1 | 1839 | 0.1 | 0.1 |
| New York, NY | 39.4 | 31 | 0 | 1812 | 0.0 | 0.0 |
| Los Angeles, CA | 34.0 | 26 | 0 | 1839 | 0.0 | 0.0 |
| Chicago, IL | 39.4 | 31 | 0 | 1793 | 0.0 | 0.0 |
| Houston, TX | 42.2 | 20 | 0 | 1747 | 0.0 | 0.0 |
| Washington, DC | 40.6 | 35 | 0 | 1839 | 0.0 | 0.0 |
| Miami, FL | 36.7 | 38 | 0 | 1839 | 0.0 | 0.0 |
| Philadelphia, PA | 39.0 | 24 | 0 | 1839 | 0.0 | 0.0 |
| Atlanta, GA | 40.6 | 25 | 0 | 1839 | 0.0 | 0.0 |
| Boston, MA | 38.9 | 30 | 0 | 1839 | 0.0 | 0.0 |
| San Francisco, CA | 39.4 | 19 | 0 | 1747 | 0.0 | 0.0 |
| Detroit, MI | 38.3 | 32 | 0 | 1839 | 0.0 | 0.0 |
| Seattle, WA | 39.4 | 20 | 0 | 1840 | 0.0 | 0.0 |
| Minneapolis, MN | 38.9 | 32 | 0 | 1839 | 0.0 | 0.0 |
| San Diego, CA | 36.0 | 39 | 0 | 1839 | 0.0 | 0.0 |
| Tampa, FL | 36.0 | 47 | 0 | 1839 | 0.0 | 0.0 |
| Baltimore, MD | 41.0 | 20 | 0 | 1839 | 0.0 | 0.0 |
| Orlando, FL | 37.2 | 39 | 0 | 1839 | 0.0 | 0.0 |
| Charlotte, NC | 39.4 | 27 | 0 | 1839 | 0.0 | 0.0 |
| Portland, OR | 41.0 | 20 | 0 | 1748 | 0.0 | 0.0 |
| Pittsburgh, PA | 36.1 | 43 | 0 | 1839 | 0.0 | 0.0 |
| Cincinnati, OH | 39.4 | 31 | 0 | 1839 | 0.0 | 0.0 |
| Kansas City, MO | 41.7 | 26 | 0 | 1839 | 0.0 | 0.0 |
| Columbus, SC | 37.2 | 38 | 0 | 1839 | 0.0 | 0.0 |
| Cleveland, OH | 36.7 | 35 | 0 | 1835 | 0.0 | 0.0 |
| Indianapolis, IN | 40.6 | 25 | 0 | 1839 | 0.0 | 0.0 |
| San Jose, CA | 41.0 | 23 | 0 | 1839 | 0.0 | 0.0 |
| Nashville, TN | 41.7 | 17 | 0 | 1839 | 0.0 | 0.0 |
| Virginia Beach, VA | 38.3 | 44 | 0 | 1836 | 0.0 | 0.0 |
| Providence, RI | 38.3 | 33 | 0 | 1839 | 0.0 | 0.0 |
| Milwaukee, WI | 38.3 | 29 | 0 | 1839 | 0.0 | 0.0 |
| Jacksonville, FL | 38.3 | 42 | 0 | 1839 | 0.0 | 0.0 |
| Raleigh, NC | 40.6 | 30 | 0 | 1839 | 0.0 | 0.0 |
| Memphis, TN | 41.1 | 25 | 0 | 1839 | 0.0 | 0.0 |
| Richmond, VA | 41.0 | 23 | 0 | 1839 | 0.0 | 0.0 |
| Louisville, KY | 40.0 | 22 | 0 | 1839 | 0.0 | 0.0 |
| New Orleans, LA | 38.0 | 37 | 0 | 1839 | 0.0 | 0.0 |
| Hartford, CT | 39.0 | 29 | 0 | 1839 | 0.0 | 0.0 |
| Birmingham, AL | 41.0 | 17 | 0 | 1839 | 0.0 | 0.0 |
| Buffalo, NY | 35.0 | 37 | 0 | 1839 | 0.0 | 0.0 |
| Rochester, NY | 36.1 | 46 | 0 | 1839 | 0.0 | 0.0 |
| Grand Rapids, MI | 40.0 | 30 | 0 | 1839 | 0.0 | 0.0 |
| Worcester, MA | 39.4 | 17 | 0 | 1826 | 0.0 | 0.0 |
| Bridgeport, CT | 38.3 | 38 | 0 | 1839 | 0.0 | 0.0 |
| Omaha, NE | 40.6 | 25 | 0 | 1839 | 0.0 | 0.0 |
| Greenville, SC | 40.6 | 30 | 0 | 1836 | 0.0 | 0.0 |
| Knoxville, TN | 40.6 | 22 | 0 | 1839 | 0.0 | 0.0 |
| Albany, NY | 37.2 | 41 | 0 | 1839 | 0.0 | 0.0 |
| New Haven, CT | 38.0 | 37 | 0 | 1838 | 0.0 | 0.0 |
| Oxnard, CA | 30.0 | 45 | 0 | 1839 | 0.0 | 0.0 |
| Allentown, PA | 39.4 | 36 | 0 | 1838 | 0.0 | 0.0 |
| Baton Rouge, LA | 39.4 | 30 | 0 | 1747 | 0.0 | 0.0 |
| North Port, FL | 37.2 | 42 | 0 | 1839 | 0.0 | 0.0 |
| Dayton, OH | 38.9 | 30 | 0 | 1839 | 0.0 | 0.0 |
| Charleston, SC | 38.3 | 33 | 0 | 1839 | 0.0 | 0.0 |
| Greensboro, NC | 38.3 | 33 | 0 | 1839 | 0.0 | 0.0 |
| Cape Coral, FL | 37.0 | 37 | 0 | 1839 | 0.0 | 0.0 |
| Colorado Springs, CO | 37.2 | 18 | 0 | 1839 | 0.0 | 0.0 |
| Lakeland, FL | 39.0 | 33 | 0 | 1839 | 0.0 | 0.0 |
| Akron, OH | 37.8 | 37 | 0 | 1839 | 0.0 | 0.0 |
| Poughkeepsie, NY | 39.0 | 29 | 0 | 1837 | 0.0 | 0.0 |
| Ogden, UT | 39.0 | 14 | 0 | 1834 | 0.0 | 0.0 |
| Winston, NC | 38.9 | 30 | 0 | 1838 | 0.0 | 0.0 |
| Madison, WI | 39.4 | 30 | 0 | 1839 | 0.0 | 0.0 |
| Deltona, FL | 36.7 | 34 | 0 | 1839 | 0.0 | 0.0 |
| Des Moines, IA | 41.1 | 26 | 0 | 1839 | 0.0 | 0.0 |
| Syracuse, NY | 38.0 | 27 | 0 | 1839 | 0.0 | 0.0 |
| Springfield, MA | 38.3 | 26 | 0 | 1838 | 0.0 | 0.0 |
| Augusta, GA | 42.0 | 25 | 0 | 1839 | 0.0 | 0.0 |
| Toledo, OH | 38.9 | 32 | 0 | 1839 | 0.0 | 0.0 |
| Palm Bay, FL | 37.0 | 47 | 0 | 1839 | 0.0 | 0.0 |
| Jackson, MS | 41.1 | 25 | 0 | 1839 | 0.0 | 0.0 |
| Durham, NC | 40.6 | 30 | 0 | 1839 | 0.0 | 0.0 |
| Harrisburg, PA | 38.9 | 40 | 0 | 1839 | 0.0 | 0.0 |
| Spokane, WA | 40.6 | 13 | 0 | 1839 | 0.0 | 0.0 |
| Chattanooga, TN | 41.1 | 21 | 0 | 1839 | 0.0 | 0.0 |
| Portland, ME | 37.8 | 30 | 0 | 1839 | 0.0 | 0.0 |
| Fargo, ND | 39.0 | 33 | 0 | 1839 | 0.0 | 0.0 |
| Sioux Falls, SD | 39.4 | 26 | 0 | 1839 | 0.0 | 0.0 |
| Burlington, VT | 36.7 | 32 | 0 | 1839 | 0.0 | 0.0 |
| Cheyenne, WY | 36.7 | 13 | 0 | 1839 | 0.0 | 0.0 |