Wynona, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wynona, a town in Osage County, Oklahoma.
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 101. South wind 5 to 10 mph.
7-day forecast for Wynona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 74°F | Mostly Clear | 5 to 10 mph SE | 3% |
| Wednesday | 100°F | Partly Sunny | 10 mph S | 7% |
| Wednesday Night | 75°F | Partly Cloudy | 5 to 10 mph SE | 11% |
| Thursday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 19% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 5 mph SE | 55% |
| Friday | 94°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph SE | 55% |
| Friday Night | 73°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 to 10 mph SE | 17% |
| Saturday | 96°F | Sunny | 5 to 10 mph S | 14% |
| Saturday Night | 74°F | Mostly Clear | 10 mph S | 3% |
| Sunday | 97°F | Sunny | 10 to 15 mph S | 2% |
| Sunday Night | 75°F | Clear | 10 mph S | 1% |
| Monday | 97°F | Sunny | 10 to 15 mph S | 1% |
| Monday Night | 76°F | Mostly Clear | 10 to 15 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Wynona (36.546, -96.326). Updated through the day.
Growing snapshot for Wynona
Last spring frost
Mar 31
First fall frost
Oct 31
Growing season
212 days
Hardiness zone
7a
More local growing data for Wynona: nearby ZIP 74084 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Avant
Barnsdall
Bowring
Burbank
Fairfax
Foraker
Grainola
Hominy
McCord
Mule Barn
Nelagoney
Oak Grove
Pawhuska
Pershing
Prue
Ralston
Shidler
Skiatook
Sperry
Webb City
Westport
Climate data from the nearest NOAA station, Barnsdall, Ok (9.6 mi from Wynona). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.