| City | First freeze (32°F) | Hard freeze (28°F) |
|---|
| Fargo, ND | Sep 30 | Oct 10 |
| Sioux Falls, SD | Oct 6 | Oct 17 |
| Denver, CO | Oct 9 | Oct 18 |
| Madison, WI | Oct 10 | Oct 22 |
| Minneapolis, MN | Oct 18 | Oct 29 |
| Des Moines, IA | Oct 20 | Oct 30 |
| Grand Rapids, MI | Oct 20 | Nov 2 |
| Boise, ID | Oct 21 | Oct 31 |
| Fort Wayne, IN | Oct 21 | Nov 1 |
| Omaha, NE | Oct 21 | Oct 30 |
| Pittsburgh, PA | Oct 23 | Nov 4 |
| Kansas City, MO | Oct 24 | Nov 1 |
| Cincinnati, OH | Oct 25 | Nov 3 |
| Rochester, NY | Oct 25 | Nov 6 |
| Buffalo, NY | Oct 26 | Nov 6 |
| Indianapolis, IN | Oct 26 | Nov 5 |
| Columbus, OH | Oct 27 | Nov 6 |
| Detroit, MI | Oct 27 | Nov 7 |
| Chicago, IL | Oct 28 | Nov 7 |
| Lexington, KY | Oct 28 | Nov 6 |
| Milwaukee, WI | Oct 29 | Nov 8 |
| Providence, RI | Oct 30 | Nov 9 |
| Baltimore, MD | Oct 31 | Nov 10 |
| Salt Lake City, UT | Oct 31 | Nov 10 |
| Oklahoma City, OK | Nov 2 | Nov 11 |
| Charlotte, NC | Nov 3 | Nov 14 |
| Cleveland, OH | Nov 3 | Nov 13 |
| Nashville, TN | Nov 3 | Nov 15 |
| Raleigh, NC | Nov 4 | Nov 16 |
| Richmond, VA | Nov 4 | Nov 15 |
| St. Louis, MO | Nov 4 | Nov 13 |
| Louisville, KY | Nov 7 | Nov 17 |
| Boston, MA | Nov 9 | Nov 21 |
| Philadelphia, PA | Nov 10 | Nov 23 |
| Birmingham, AL | Nov 11 | Nov 24 |
| Austin, TX | Nov 16 | Dec 1 |
| Washington, DC | Nov 18 | Dec 3 |
| Portland, OR | Nov 19 | Dec 5 |
| Atlanta, GA | Nov 20 | Dec 5 |
| New York, NY | Nov 20 | Dec 1 |
| Norfolk, VA | Nov 23 | Dec 8 |
| Seattle, WA | Nov 23 | Dec 10 |
| Dallas-Fort Worth, TX | Nov 24 | Dec 7 |
| San Antonio, TX | Nov 28 | Dec 13 |
| Houston, TX | Dec 9 | Jan 2 |
| Phoenix, AZ | Jan 3 | Rare |
The middle date is NOAA's 50% date. In about half of years the first freeze comes sooner. "Rare" means NOAA lists no middle date because freezing nights do not happen most years. Each city page names its weather station and source file.
Source
NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020, annual/seasonal normals. ForecastBooked is not affiliated with or endorsed by NOAA.
