Frost dates 2026–2027

Frost dates for Clinton, Tennessee

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Oak Ridge Asos, 7.9 mi away (close match).

Last spring frostMar 31
First fall frostNov 4
218 frost-free days
Last spring frostMar 311 year in 10 after Apr 15
First fall frostNov 41 year in 10 by Oct 22
Growing season218 daysbetween median 32°F dates
Hardiness zoneZone 7b5 to 10°F average extreme low

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Will it freeze in Clinton in the next 7 nights?

No overnight lows at or below 32°F are forecast in Clinton during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 46°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.

3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.

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 Clinton

The median first fall hard-freeze date (28°F) is November 15, from NOAA’s 1991–2020 Climate Normals at Oak Ridge Asos. This is the 50% probability date, not a forecast for this year.

TemperatureLast 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 28 · Apr 12 · Apr 30 Oct 14 · Oct 27 · Nov 8 196 days
32°F freeze Mar 11 · Mar 31 · Apr 15 Oct 22 · Nov 4 · Nov 18 218 days
28°F hard freeze Feb 26 · Mar 18 · Apr 3 Nov 1 · Nov 15 · Dec 4 243 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053868. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Oak Ridge Asos

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 Clinton, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Oak Ridge Asos (station USW00053868, elevation 910 ft), 7.9 mi from Clinton. 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 Clinton

CityDistanceLast spring frostFirst fall frost
Oak Ridge, TN 13 mi Apr 5 Nov 1
Knoxville, TN 13 mi Apr 11 Oct 28
Farragut, TN 16 mi Apr 5 Nov 1
La Follette, TN 19 mi Apr 22 Oct 25
Lenoir City, TN 21 mi Apr 5 Nov 1
Alcoa, TN 22 mi Apr 1 Nov 2
Maryville, TN 25 mi Apr 1 Nov 2
Kingston, TN 26 mi Apr 3 Nov 4
Harriman, TN 27 mi Apr 3 Nov 4
Loudon, TN 28 mi Apr 5 Nov 1

Frequently asked questions

When is the last frost in Clinton?

On average, the last spring frost (32°F) in Clinton is around March 31. In about 1 year in 10 it comes after April 15, and in 9 years in 10 it comes after March 11.

When is the first frost in Clinton?

The first fall frost (32°F) usually arrives around November 4. There’s a 10% chance of a freeze by October 22 and a 90% chance by November 18.

Can it frost in Clinton 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 12.

What growing zone is Clinton?

Clinton 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 37716. See growing zones in Tennessee.

More: all Tennessee frost dates · Tennessee growing zones · frost vs. freeze