Frost dates 2026–2027

Frost dates for Grove, Oklahoma

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Upper Spavinaw Port, 17 mi away (reasonable match).

Last spring frostApr 16
First fall frostOct 20
187 frost-free days
Last spring frostApr 161 year in 10 after May 1
First fall frostOct 201 year in 10 by Oct 6
Growing season187 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

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Will it freeze in Grove in the next 7 nights?

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

Tonight: forecast low 42°F. Above 36°F.

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

2 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 Grove

The median first fall hard-freeze date (28°F) is October 30, from NOAA’s 1991–2020 Climate Normals at Upper Spavinaw Port. 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 12 · Apr 28 · May 11 Sep 28 · Oct 10 · Oct 22 165 days
32°F freeze Mar 31 · Apr 16 · May 1 Oct 6 · Oct 20 · Nov 1 187 days
28°F hard freeze Mar 16 · Apr 3 · Apr 21 Oct 16 · Oct 30 · Nov 13 208 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00349101. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Upper Spavinaw Port

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 Grove, OK come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Upper Spavinaw Port (station USC00349101, elevation 795 ft), 17 mi from 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 Grove

CityDistanceLast spring frostFirst fall frost
Vinita, OK 16 mi Apr 7 Nov 2
Miami, OK 21 mi Apr 6 Oct 27
Neosho, MO 29 mi Apr 7 Oct 31
Bella Vista, AR 30 mi Apr 12 Oct 26
Siloam Springs, AR 31 mi Mar 31 Nov 2
Centerton, AR 32 mi Apr 8 Oct 28
Bentonville, AR 35 mi Apr 12 Oct 26
Pryor Creek, OK 35 mi Apr 5 Oct 30
Joplin, MO 37 mi Apr 9 Oct 27
Cave Springs, AR 38 mi Apr 12 Oct 26

Frequently asked questions

When is the last frost in Grove?

On average, the last spring frost (32°F) in Grove is around April 16. In about 1 year in 10 it comes after May 1, and in 9 years in 10 it comes after March 31.

When is the first frost in Grove?

The first fall frost (32°F) usually arrives around October 20. There’s a 10% chance of a freeze by October 6 and a 90% chance by November 1.

Can it frost in 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 28.

What growing zone is Grove?

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 74344. See growing zones in Oklahoma.

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