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Will it freeze in Smyrna in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 32°F (Sat, Nov 7, 6:00 PM CST to Sun, Nov 8, 6:00 AM CST).
Tonight: forecast low 43°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
5 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 43°F Above 36°F · Patchy Fog
- Fri, Nov 6 36°F Frost possible · Mostly Cloudy
- Sat, Nov 7 32°F Freeze · Mostly Clear then Areas Of Fog
- Sun, Nov 8 32°F Freeze · Mostly Clear
- Mon, Nov 9 34°F Frost possible · Partly Cloudy
- Tue, Nov 10 36°F Frost possible · Mostly Clear
- Wed, Nov 11 38°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 Smyrna
The median first fall hard-freeze date (28°F) is October 30, from NOAA’s 1991–2020 Climate Normals at Smyrna 6S. 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 11 · Apr 29 · May 15 | Sep 30 · Oct 12 · Oct 24 | 166 days |
| 32°F freeze | Mar 31 · Apr 13 · May 4 | Oct 8 · Oct 21 · Nov 2 | 189 days |
| 28°F hard freeze | Mar 18 · Apr 1 · Apr 15 | Oct 16 · Oct 30 · Nov 11 | 210 days |
Average high temperature by month
1991–2020 normals at Smyrna 6S
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 Smyrna, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Smyrna 6S (station USC00408414, elevation 550 ft), 4.3 mi from Smyrna. 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 Smyrna
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| La Vergne, TN | 4.3 mi | Apr 13 | Oct 21 |
| Nolensville, TN | 8.1 mi | Apr 15 | Oct 26 |
| Murfreesboro, TN | 9.9 mi | Apr 9 | Oct 27 |
| Brentwood, TN | 14 mi | Apr 15 | Oct 26 |
| Mount Juliet, TN | 16 mi | Apr 1 | Nov 4 |
| Franklin, TN | 19 mi | Apr 3 | Oct 31 |
| Lebanon, TN | 19 mi | Apr 6 | Oct 28 |
| Nashville, TN | 20 mi | Apr 1 | Oct 31 |
| Hendersonville, TN | 24 mi | Apr 11 | Oct 29 |
| Thompson's Station, TN | 24 mi | Apr 3 | Nov 1 |
Frequently asked questions
When is the last frost in Smyrna?
On average, the last spring frost (32°F) in Smyrna is around April 13. In about 1 year in 10 it comes after May 4, and in 9 years in 10 it comes after March 31.
When is the first frost in Smyrna?
The first fall frost (32°F) usually arrives around October 21. There’s a 10% chance of a freeze by October 8 and a 90% chance by November 2.
Can it frost in Smyrna 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 29.
What growing zone is Smyrna?
Smyrna 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 37167. See growing zones in Tennessee.
More: all Tennessee frost dates · Tennessee growing zones · UV index today in Smyrna · frost vs. freeze