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Will it freeze in Morristown in the next 7 nights?
No overnight lows at or below 32°F are forecast in Morristown during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 49°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 49°F Above 36°F · Partly Cloudy
- Fri, Nov 6 44°F Above 36°F · Mostly Cloudy
- Sat, Nov 7 35°F Frost possible · Partly Cloudy
- Sun, Nov 8 35°F Frost possible · Mostly Clear
- Mon, Nov 9 37°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 Morristown
The median first fall hard-freeze date (28°F) is November 6, from NOAA’s 1991–2020 Climate Normals at Morristown Radio Wcrk. 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 5 · Apr 22 · May 8 | Oct 9 · Oct 20 · Nov 1 | 181 days |
| 32°F freeze | Mar 25 · Apr 10 · Apr 26 | Oct 16 · Oct 28 · Nov 9 | 201 days |
| 28°F hard freeze | Mar 11 · Mar 29 · Apr 14 | Oct 26 · Nov 6 · Nov 22 | 224 days |
Average high temperature by month
1991–2020 normals at Morristown Radio Wcrk
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 Morristown, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Morristown Radio Wcrk (station USC00406271, elevation 1,344 ft), 1.8 mi from Morristown. 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 Morristown
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Jefferson City, TN | 12 mi | Apr 24 | Oct 17 |
| Newport, TN | 18 mi | Apr 7 | Oct 29 |
| Sevierville, TN | 27 mi | Apr 6 | Oct 29 |
| Greeneville, TN | 27 mi | Apr 20 | Oct 22 |
| Pigeon Forge, TN | 32 mi | Apr 17 | Oct 25 |
| Middlesborough, KY | 37 mi | Apr 23 | Oct 19 |
| Church Hill, TN | 39 mi | Apr 9 | Oct 29 |
| Knoxville, TN | 40 mi | Apr 11 | Oct 28 |
| Mount Carmel, TN | 43 mi | Apr 9 | Oct 29 |
| Alcoa, TN | 46 mi | Apr 1 | Nov 2 |
Frequently asked questions
When is the last frost in Morristown?
On average, the last spring frost (32°F) in Morristown is around April 10. In about 1 year in 10 it comes after April 26, and in 9 years in 10 it comes after March 25.
When is the first frost in Morristown?
The first fall frost (32°F) usually arrives around October 28. There’s a 10% chance of a freeze by October 16 and a 90% chance by November 9.
Can it frost in Morristown 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 Morristown?
Morristown 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 37814. See growing zones in Tennessee.
More: all Tennessee frost dates · Tennessee growing zones · UV index today in Morristown · frost vs. freeze