Guymon, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Guymon, a city in Texas County, Oklahoma.
This Afternoon
99°F
Mostly Sunny
Mostly sunny, with a high near 99. South southwest wind around 20 mph, with gusts as high as 30 mph.
7-day forecast for Guymon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Mostly Sunny | 20 mph SSW | 1% |
| Tonight | 67°F | Mostly Clear | 15 to 20 mph SSW | 6% |
| Saturday | 95°F | Sunny | 10 to 15 mph W | 3% |
| Saturday Night | 60°F | Partly Cloudy then Slight Chance Rain Showers | 10 mph NNE | 19% |
| Sunday | 83°F | Partly Sunny | 10 to 15 mph NNE | 12% |
| Sunday Night | 56°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph NE | 27% |
| Monday | 79°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 27% |
| Monday Night | 55°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph ESE | 30% |
| Tuesday | 77°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 48% |
| Tuesday Night | 56°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph SE | 40% |
| Wednesday | 76°F | Rain Showers Likely | 10 to 15 mph SSE | 56% |
| Wednesday Night | 58°F | Rain Showers Likely | 10 mph SSE | 58% |
| Thursday | 79°F | Rain Showers Likely | 10 to 15 mph S | 58% |
| Thursday Night | 57°F | Chance Rain Showers | 5 to 10 mph S | 45% |
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 Sep 18, 2026.