Guymon, OK Weather & Growing Conditions
Today
92°F
Mostly Sunny
Mostly sunny, with a high near 92. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Mostly Sunny | 10 to 15 mph NNW | 7% |
| Tonight | 64°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NNE | 19% |
| Wednesday | 101°F | Sunny | 5 to 15 mph SSE | 13% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms | 5 to 15 mph E | 32% |
| Thursday | 100°F | Sunny | 5 to 15 mph SSE | 11% |
| Thursday Night | 67°F | Mostly Clear | 10 to 15 mph SSE | 14% |
| Friday | 102°F | Sunny | 10 to 15 mph SSW | 9% |
| Friday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 mph S | 20% |
| Saturday | 103°F | Sunny | 10 to 15 mph SSW | 5% |
| Saturday Night | 69°F | Mostly Clear | 10 to 15 mph S | 0% |
| Sunday | 104°F | Sunny | 15 to 20 mph SSW | 0% |
| Sunday Night | 70°F | Clear | 15 mph S | 0% |
| Monday | 104°F | Sunny | 15 to 20 mph SSW | 0% |
| Monday Night | 71°F | Mostly Clear | 15 to 20 mph S | 2% |
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 Aug 4, 2026.