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Will it freeze in Oak Ridge in the next 7 nights?
No overnight lows at or below 32°F are forecast in Oak Ridge 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.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 47°F Above 36°F · Partly Cloudy
- Fri, Nov 6 43°F Above 36°F · Partly Cloudy
- Sat, Nov 7 36°F Frost possible · Partly Cloudy
- Sun, Nov 8 36°F Frost possible · Mostly Clear
- Mon, Nov 9 39°F Above 36°F · Mostly Clear
- Tue, Nov 10 39°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 Oak Ridge
The median first fall hard-freeze date (28°F) is November 11, from NOAA’s 1991–2020 Climate Normals at Oak Ridge Atdd. 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 3 · Apr 17 · May 2 | Oct 10 · Oct 23 · Nov 4 | 189 days |
| 32°F freeze | Mar 19 · Apr 5 · Apr 19 | Oct 19 · Nov 1 · Nov 13 | 210 days |
| 28°F hard freeze | Mar 2 · Mar 23 · Apr 9 | Oct 31 · Nov 11 · Nov 28 | 235 days |
Average high temperature by month
1991–2020 normals at Oak Ridge Atdd
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 Oak Ridge, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Oak Ridge Atdd (station USW00003841, elevation 905 ft), 3.4 mi from Oak Ridge. 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 Oak Ridge
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Farragut, TN | 8.7 mi | Apr 5 | Nov 1 |
| Lenoir City, TN | 11 mi | Apr 5 | Nov 1 |
| Clinton, TN | 13 mi | Mar 31 | Nov 4 |
| Kingston, TN | 14 mi | Apr 3 | Nov 4 |
| Harriman, TN | 16 mi | Apr 3 | Nov 4 |
| Loudon, TN | 16 mi | Apr 5 | Nov 1 |
| Knoxville, TN | 19 mi | Apr 11 | Oct 28 |
| Alcoa, TN | 21 mi | Apr 1 | Nov 2 |
| Rockwood, TN | 22 mi | Apr 8 | Oct 31 |
| Maryville, TN | 23 mi | Apr 1 | Nov 2 |
Frequently asked questions
When is the last frost in Oak Ridge?
On average, the last spring frost (32°F) in Oak Ridge is around April 5. In about 1 year in 10 it comes after April 19, and in 9 years in 10 it comes after March 19.
When is the first frost in Oak Ridge?
The first fall frost (32°F) usually arrives around November 1. There’s a 10% chance of a freeze by October 19 and a 90% chance by November 13.
Can it frost in Oak Ridge 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 17.
What growing zone is Oak Ridge?
Oak Ridge is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 37830. See growing zones in Tennessee.
More: all Tennessee frost dates · Tennessee growing zones · UV index today in Oak Ridge · frost vs. freeze