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Will it freeze in Chattanooga in the next 7 nights?
No overnight lows at or below 32°F are forecast in Chattanooga during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 50°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 50°F Above 36°F · Mostly Clear
- Fri, Nov 6 45°F Above 36°F · Mostly Clear
- Sat, Nov 7 40°F Above 36°F · Mostly Clear
- Sun, Nov 8 39°F Above 36°F · Mostly Clear
- Mon, Nov 9 41°F Above 36°F · Mostly Clear
- Tue, Nov 10 42°F Above 36°F · Mostly Clear
- Wed, Nov 11 43°F Above 36°F · Mostly Clear
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Chattanooga
The median first fall hard-freeze date (28°F) is November 22, from NOAA’s 1991–2020 Climate Normals at Chattanooga Lovell Airport. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Mar 19 · Apr 4 · Apr 20 | Oct 19 · Oct 31 · Nov 11 | 208 days |
| 32°F freeze | Mar 6 · Mar 24 · Apr 8 | Oct 27 · Nov 9 · Nov 26 | 230 days |
| 28°F hard freeze | Feb 18 · Mar 11 · Mar 30 | Nov 6 · Nov 22 · Dec 13 | 257 days |
Average high temperature by month
1991–2020 normals at Chattanooga Lovell Airport
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Chattanooga, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Chattanooga Lovell Airport (station USW00013882, elevation 671 ft), 3.6 mi from Chattanooga. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Chattanooga
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Red Bank, TN | 4.3 mi | Mar 31 | Nov 6 |
| East Ridge, TN | 5.0 mi | Mar 24 | Nov 9 |
| Signal Mountain, TN | 7.5 mi | Mar 31 | Nov 6 |
| Fort Oglethorpe, GA | 9.3 mi | Apr 6 | Oct 30 |
| Collegedale, TN | 11 mi | Mar 24 | Nov 9 |
| Soddy-Daisy, TN | 14 mi | Apr 7 | Oct 29 |
| Dunlap, TN | 22 mi | Mar 26 | Nov 8 |
| Cleveland, TN | 23 mi | Apr 6 | Oct 30 |
| LaFayette, GA | 25 mi | Mar 25 | Nov 9 |
| Dalton, GA | 26 mi | Apr 2 | Nov 4 |
Frequently asked questions
When is the last frost in Chattanooga?
On average, the last spring frost (32°F) in Chattanooga is around March 24. In about 1 year in 10 it comes after April 8, and in 9 years in 10 it comes after March 6.
When is the first frost in Chattanooga?
The first fall frost (32°F) usually arrives around November 9. There’s a 10% chance of a freeze by October 27 and a 90% chance by November 26.
Can it frost in Chattanooga after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after April 4.
What growing zone is Chattanooga?
Chattanooga is in USDA Plant Hardiness Zone 8a (average annual extreme minimum temperature 10 to 15°F), based on the 2023 USDA map for ZIP code 37406. See growing zones in Tennessee.
More: all Tennessee frost dates · Tennessee growing zones · UV index today in Chattanooga · frost vs. freeze