Guymon, OK Weather & Growing Conditions
This Afternoon
56°F
Mostly Sunny
Mostly sunny, with a high near 56. North northwest wind 10 to 20 mph, with gusts as high as 35 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Mostly Sunny | 10 to 20 mph NNW | 0% |
| Tonight | 34°F | Mostly Clear then Patchy Fog | 5 mph WNW | 0% |
| Wednesday | 64°F | Patchy Fog then Sunny | 0 to 15 mph SW | 1% |
| Wednesday Night | 40°F | Partly Cloudy then Chance Rain Showers | 5 to 15 mph E | 35% |
| Thursday | 54°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 15 mph N | 19% |
| Thursday Night | 32°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Friday | 58°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Friday Night | 35°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Saturday | 61°F | Sunny | 0 to 5 mph NW | 2% |
| Saturday Night | 35°F | Mostly Clear | 0 to 5 mph NW | 1% |
| Sunday | 65°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 39°F | Clear | 5 mph SSW | 0% |
| Monday | 69°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Guymon, OK
Last spring frost
Apr 18
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
6b
Explore more for Guymon, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Guymon Muni Ap, Ok (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.