Wynona, OK Weather & Growing Conditions
Today
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 100. South wind 5 to 15 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 5 to 15 mph S | 1% |
| Tonight | 73°F | Partly Cloudy then Chance Showers And Thunderstorms | 10 mph S | 31% |
| Sunday | 88°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 68% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NE | 65% |
| Monday | 81°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 42% |
| Monday Night | 60°F | Partly Cloudy | 10 mph NE | 6% |
| Tuesday | 77°F | Mostly Sunny | 10 mph NE | 6% |
| Tuesday Night | 56°F | Partly Cloudy | 5 to 10 mph NE | 2% |
| Wednesday | 78°F | Mostly Sunny | 5 mph NE | 4% |
| Wednesday Night | 59°F | Partly Cloudy | 5 mph NE | 5% |
| Thursday | 81°F | Slight Chance Rain Showers | 5 mph E | 16% |
| Thursday Night | 62°F | Mostly Cloudy | 5 mph E | 13% |
| Friday | 82°F | Slight Chance Rain Showers | 5 mph E | 20% |
| Friday Night | 64°F | Mostly Cloudy | 5 mph E | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Wynona, OK
Last spring frost
Mar 31
First fall frost
Oct 31
Growing season
212 days
Hardiness zone
7a
Explore more for Wynona, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Barnsdall, Ok (9.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.