Frost dates 2026–2027

Frost dates for East Ridge, Tennessee

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Chattanooga Lovell Airport, 2.8 mi away (close match).

Last spring frostMar 24
First fall frostNov 9
230 frost-free days
Last spring frostMar 241 year in 10 after Apr 8
First fall frostNov 91 year in 10 by Oct 27
Growing season230 daysbetween median 32°F dates
Hardiness zoneZone 8a10 to 15°F average extreme low

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Will it freeze in East Ridge in the next 7 nights?

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

Tonight: forecast low 50°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.

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 East Ridge

The median first fall hard-freeze date (28°F) is November 22, from NOAA’s 1991–2020 Climate Normals at Chattanooga Lovell Airport. 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 19 · Apr 4 · Apr 20 Oct 19 · Oct 31 · Nov 11 208 days
32°F freeze Mar 6 · Mar 24 · Apr 8 Oct 27 · Nov 9 · Nov 26 230 days
28°F hard freeze Feb 18 · Mar 11 · Mar 30 Nov 6 · Nov 22 · Dec 13 257 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00013882. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Chattanooga Lovell Airport

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 East Ridge, TN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Chattanooga Lovell Airport (station USW00013882, elevation 671 ft), 2.8 mi from East 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 East Ridge

CityDistanceLast spring frostFirst fall frost
Fort Oglethorpe, GA 4.3 mi Apr 6 Oct 30
Chattanooga, TN 5.0 mi Mar 24 Nov 9
Red Bank, TN 8.7 mi Mar 31 Nov 6
Collegedale, TN 11 mi Mar 24 Nov 9
Signal Mountain, TN 12 mi Mar 31 Nov 6
Soddy-Daisy, TN 19 mi Apr 7 Oct 29
LaFayette, GA 20 mi Mar 25 Nov 9
Dalton, GA 22 mi Apr 2 Nov 4
Cleveland, TN 24 mi Apr 6 Oct 30
Dunlap, TN 27 mi Mar 26 Nov 8

Frequently asked questions

When is the last frost in East Ridge?

On average, the last spring frost (32°F) in East Ridge is around March 24. In about 1 year in 10 it comes after April 8, and in 9 years in 10 it comes after March 6.

When is the first frost in East Ridge?

The first fall frost (32°F) usually arrives around November 9. There’s a 10% chance of a freeze by October 27 and a 90% chance by November 26.

Can it frost in East 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 4.

What growing zone is East Ridge?

East Ridge is in USDA Plant Hardiness Zone 8a (average annual extreme minimum temperature 10 to 15°F), based on the 2023 USDA map for ZIP code 37412. See growing zones in Tennessee.

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