Guymon, OK Weather & Growing Conditions
Overnight
67°F
Mostly Clear
Mostly clear, with a low around 67. South southwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Mostly Clear | 10 mph SSW | 1% |
| Saturday | 95°F | Mostly Sunny | 10 to 15 mph WSW | 1% |
| Saturday Night | 61°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NNE | 15% |
| Sunday | 83°F | Slight Chance Rain Showers then Mostly Sunny | 10 to 15 mph NNE | 15% |
| Sunday Night | 55°F | Partly Cloudy then Chance Rain Showers | 5 to 10 mph NE | 38% |
| Monday | 78°F | Chance Rain Showers | 5 to 10 mph NE | 38% |
| Monday Night | 54°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph ESE | 30% |
| Tuesday | 76°F | Chance Showers And Thunderstorms | 5 to 15 mph SE | 44% |
| Tuesday Night | 54°F | Chance Rain Showers | 10 to 15 mph SE | 26% |
| Wednesday | 78°F | Chance Rain Showers | 10 to 15 mph SSE | 46% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 5 to 15 mph S | 50% |
| Thursday | 82°F | Chance Rain Showers | 10 to 15 mph SSW | 50% |
| Thursday Night | 60°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 47% |
| Friday | 82°F | Chance Rain Showers | 5 to 15 mph SSW | 47% |
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 Sep 19, 2026.