Guymon, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Guymon, a city in Texas County, Oklahoma.
This Afternoon
55°F
Mostly Sunny
Mostly sunny, with a high near 55. North northwest wind 10 to 25 mph, with gusts as high as 35 mph.
7-day forecast for Guymon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Mostly Sunny | 10 to 25 mph NNW | 1% |
| Tonight | 35°F | Mostly Clear | 5 mph WNW | 0% |
| Wednesday | 63°F | Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 41°F | Partly Cloudy then Chance Rain Showers | 5 to 15 mph E | 36% |
| Thursday | 56°F | Slight Chance Rain Showers then Sunny | 5 to 15 mph NNW | 22% |
| Thursday Night | 33°F | Mostly Clear | 5 mph NW | 0% |
| Friday | 59°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Friday Night | 36°F | Partly Cloudy | 0 to 5 mph S | 2% |
| Saturday | 60°F | Sunny | 5 mph NW | 2% |
| Saturday Night | 36°F | Mostly Clear | 5 mph NNW | 2% |
| Sunday | 62°F | Sunny | 5 mph W | 1% |
| Sunday Night | 38°F | Clear | 5 mph SSW | 0% |
| Monday | 68°F | Sunny | 5 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Guymon (36.690, -101.477). Updated through the day.
Growing snapshot for Guymon
Last spring frost
Apr 18
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
6b
More local growing data for Guymon: nearby ZIP 73942 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Guymon Muni Ap, Ok (4.3 mi from Guymon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.