Frost dates 2026–2027

Frost dates for Seminole, Oklahoma

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Seminole, 0.3 mi away (close match).

Last spring frostApr 5
First fall frostNov 1
210 frost-free days
Last spring frostApr 51 year in 10 after Apr 22
First fall frostNov 11 year in 10 by Oct 18
Growing season210 daysbetween median 32°F dates
Hardiness zoneZone 7b5 to 10°F average extreme low

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Will it freeze in Seminole in the next 7 nights?

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

Tonight: forecast low 45°F. Above 36°F.

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

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 Seminole

The median first fall hard-freeze date (28°F) is November 9, from NOAA’s 1991–2020 Climate Normals at Seminole. 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 31 · Apr 16 · Apr 30 Oct 9 · Oct 24 · Nov 7 191 days
32°F freeze Mar 18 · Apr 5 · Apr 22 Oct 18 · Nov 1 · Nov 15 210 days
28°F hard freeze Mar 4 · Mar 24 · Apr 10 Oct 25 · Nov 9 · Nov 27 232 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00348042. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Seminole

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 Seminole, OK come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Seminole (station USC00348042, elevation 924 ft), 0.3 mi from Seminole. 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 Seminole

CityDistanceLast spring frostFirst fall frost
Tecumseh, OK 16 mi Mar 30 Nov 5
Holdenville, OK 17 mi Apr 6 Oct 31
Shawnee, OK 20 mi Mar 30 Nov 5
Ada, OK 32 mi Apr 2 Nov 4
Harrah, OK 34 mi Apr 2 Nov 5
Choctaw, OK 39 mi Apr 2 Nov 5
Norman, OK 39 mi Apr 3 Nov 3
Henryetta, OK 40 mi Apr 8 Oct 28
Noble, OK 42 mi Apr 3 Nov 3
Purcell, OK 43 mi Apr 4 Nov 2

Frequently asked questions

When is the last frost in Seminole?

On average, the last spring frost (32°F) in Seminole is around April 5. In about 1 year in 10 it comes after April 22, and in 9 years in 10 it comes after March 18.

When is the first frost in Seminole?

The first fall frost (32°F) usually arrives around November 1. There’s a 10% chance of a freeze by October 18 and a 90% chance by November 15.

Can it frost in Seminole 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 16.

What growing zone is Seminole?

Seminole 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 74868. See growing zones in Oklahoma.

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