Checking current alerts… View NWS forecast and alerts.
Will it freeze in Rockwood in the next 7 nights?
No overnight lows at or below 32°F are forecast in Rockwood during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 47°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 47°F Above 36°F · Mostly Clear
- Fri, Nov 6 43°F Above 36°F · Partly Cloudy
- Sat, Nov 7 37°F Above 36°F · Partly Cloudy
- Sun, Nov 8 37°F Above 36°F · Mostly Clear
- Mon, Nov 9 39°F Above 36°F · Mostly Clear
- Tue, Nov 10 41°F Above 36°F · Mostly Clear
- Wed, Nov 11 40°F Above 36°F · Partly Cloudy
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 Rockwood
The median first fall hard-freeze date (28°F) is November 9, from NOAA’s 1991–2020 Climate Normals at Rockwood 2. 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 | Apr 6 · Apr 22 · May 8 | Oct 9 · Oct 22 · Nov 2 | 181 days |
| 32°F freeze | Mar 22 · Apr 8 · Apr 26 | Oct 18 · Oct 31 · Nov 12 | 203 days |
| 28°F hard freeze | Mar 5 · Mar 27 · Apr 14 | Oct 27 · Nov 9 · Nov 25 | 227 days |
Average high temperature by month
1991–2020 normals at Rockwood 2
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 Rockwood, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Rockwood 2 (station USC00407834, elevation 767 ft), 2.5 mi from Rockwood. 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 Rockwood
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Harriman, TN | 7.5 mi | Apr 3 | Nov 4 |
| Kingston, TN | 9.3 mi | Apr 3 | Nov 4 |
| Loudon, TN | 20 mi | Apr 5 | Nov 1 |
| Crossville, TN | 21 mi | Apr 16 | Oct 23 |
| Sweetwater, TN | 22 mi | Apr 10 | Oct 27 |
| Lenoir City, TN | 22 mi | Apr 5 | Nov 1 |
| Oak Ridge, TN | 22 mi | Apr 5 | Nov 1 |
| Farragut, TN | 28 mi | Apr 5 | Nov 1 |
| Athens, TN | 29 mi | Apr 6 | Oct 31 |
| Madisonville, TN | 30 mi | Apr 13 | Oct 24 |
Frequently asked questions
When is the last frost in Rockwood?
On average, the last spring frost (32°F) in Rockwood is around April 8. In about 1 year in 10 it comes after April 26, and in 9 years in 10 it comes after March 22.
When is the first frost in Rockwood?
The first fall frost (32°F) usually arrives around October 31. There’s a 10% chance of a freeze by October 18 and a 90% chance by November 12.
Can it frost in Rockwood 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 22.
What growing zone is Rockwood?
Rockwood is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 37854. See growing zones in Tennessee.
More: all Tennessee frost dates · Tennessee growing zones · frost vs. freeze