Frost dates 2026–2027

Frost dates for Oak Grove, Kentucky

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Clarksville Outlaw Airport, 3.5 mi away (close match).

Last spring frostApr 6
First fall frostOct 28
204 frost-free days
Last spring frostApr 61 year in 10 after Apr 23
First fall frostOct 281 year in 10 by Oct 15
Growing season204 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

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Will it freeze in Oak Grove 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 44°F. Above 36°F.

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

4 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 Oak Grove

The median first fall hard-freeze date (28°F) is November 7, from NOAA’s 1991–2020 Climate Normals at Clarksville Outlaw 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 Apr 3 · Apr 18 · May 4 Oct 7 · Oct 19 · Oct 31 183 days
32°F freeze Mar 20 · Apr 6 · Apr 23 Oct 15 · Oct 28 · Nov 9 204 days
28°F hard freeze Mar 7 · Mar 25 · Apr 11 Oct 26 · Nov 7 · Nov 24 227 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00003894. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Clarksville Outlaw 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 Oak Grove, KY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Clarksville Outlaw Airport (station USW00003894, elevation 560 ft), 3.5 mi from Oak Grove. 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 Grove

CityDistanceLast spring frostFirst fall frost
Clarksville, TN 8.7 mi Apr 3 Nov 1
Hopkinsville, KY 12 mi Apr 4 Nov 2
Pleasant View, TN 29 mi Apr 9 Nov 1
Russellville, KY 31 mi Apr 9 Oct 28
Springfield, TN 33 mi Apr 9 Oct 28
Ashland City, TN 36 mi Apr 11 Oct 26
Greenbrier, TN 39 mi Apr 9 Oct 28
Princeton, KY 39 mi Apr 11 Oct 24
Dickson, TN 42 mi Apr 13 Oct 25
Millersville, TN 44 mi Apr 7 Oct 30

Frequently asked questions

When is the last frost in Oak Grove?

On average, the last spring frost (32°F) in Oak Grove is around April 6. In about 1 year in 10 it comes after April 23, and in 9 years in 10 it comes after March 20.

When is the first frost in Oak Grove?

The first fall frost (32°F) usually arrives around October 28. There’s a 10% chance of a freeze by October 15 and a 90% chance by November 9.

Can it frost in Oak Grove 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 18.

What growing zone is Oak Grove?

Oak Grove is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 42262. See growing zones in Kentucky.

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