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Will it freeze in Guymon in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 30°F (Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST).
Tonight: forecast low 30°F. Freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 30°F Freeze · Mostly Clear
- Fri, Nov 6 34°F Frost possible · Mostly Cloudy
- Sat, Nov 7 35°F Frost possible · Mostly Clear
- Sun, Nov 8 38°F Above 36°F · Clear
- Mon, Nov 9 39°F Above 36°F · Clear
- Tue, Nov 10 41°F Above 36°F · Mostly Clear
- Wed, Nov 11 40°F Above 36°F · Partly Cloudy
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 Guymon
The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at Guymon Municipal Airport. This is the 50% probability date, not a forecast for this year.
| Temperature | Last 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 14 · Apr 28 · May 10 | Oct 2 · Oct 14 · Oct 26 | 169 days |
| 32°F freeze | Apr 4 · Apr 18 · May 1 | Oct 11 · Oct 23 · Nov 3 | 188 days |
| 28°F hard freeze | Mar 23 · Apr 8 · Apr 23 | Oct 19 · Nov 1 · Nov 12 | 206 days |
Average high temperature by month
1991–2020 normals at Guymon Municipal 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 Guymon, OK come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Guymon Municipal Airport (station USW00003030, elevation 3,123 ft), 1.7 mi from Guymon. 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 Guymon
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Liberal, KS | 39 mi | Apr 20 | Oct 24 |
| Perryton, TX | 43 mi | Apr 14 | Oct 30 |
| Ulysses, KS | 62 mi | Apr 28 | Oct 16 |
| Dumas, TX | 63 mi | Apr 21 | Oct 24 |
| Borger, TX | 71 mi | Apr 12 | Oct 28 |
| Dalhart, TX | 72 mi | Apr 28 | Oct 20 |
| Pampa, TX | 84 mi | Apr 14 | Oct 28 |
| Garden City, KS | 95 mi | Apr 28 | Oct 17 |
| Amarillo, TX | 105 mi | Apr 15 | Oct 29 |
| Dodge City, KS | 109 mi | Apr 21 | Oct 20 |
Frequently asked questions
When is the last frost in Guymon?
On average, the last spring frost (32°F) in Guymon is around April 18. In about 1 year in 10 it comes after May 1, and in 9 years in 10 it comes after April 4.
When is the first frost in Guymon?
The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 11 and a 90% chance by November 3.
Can it frost in Guymon 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 Guymon?
Guymon is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 73942. See growing zones in Oklahoma.
More: all Oklahoma frost dates · Oklahoma growing zones · frost vs. freeze