Frost dates · Tennessee
When is the first frost in Chattanooga?
In a typical year, Chattanooga’s first frost comes around November 9 and its last around March 24.
One year in ten the first frost comes as early as October 27, and nine years in ten it has arrived by November 26. One year in ten the last frost is over as early as March 6, and nine years in ten it is over by April 8. Chattanooga averages about 56 nights a year at 32°F or colder, with about 230 frost-free days in between in a typical year. It’s frost season here, and the last frost usually comes around March 24. That makes it the 30th latest first frost of the 117 cities we track where it freezes most years.
Last updated
No freeze in the forecast for the next 48 hours.
Chattanooga’s frost season runs from early November to late March, and the river valley keeps the mornings moody.
Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Frost dates, early, typical and late years
| Early year (1 in 10) | Typical | Late year (1 in 10) | |
|---|---|---|---|
| First frost | October 27 | November 9 | November 26 |
| Last frost | March 6 | March 24 | April 8 |
A frost date here is a night when the official thermometer reads 32°F or colder. Frost on the ground can show up on clear, calm nights a few degrees milder.
Cities with about the same first frost
- Boston, Massachusetts: first frost around November 9
- Little Rock, Arkansas: first frost around November 10
- Newark, New Jersey: first frost around November 10
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00013882.