Wynona, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wynona, a town in Osage County, Oklahoma.
Tonight
75°F
Mostly Clear
Mostly clear, with a low around 75. South wind 5 to 10 mph.
7-day forecast for Wynona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Mostly Clear | 5 to 10 mph S | 0% |
| Saturday | 98°F | Sunny | 10 to 15 mph S | 2% |
| Saturday Night | 73°F | Partly Cloudy then Chance Showers And Thunderstorms | 10 to 15 mph S | 37% |
| Sunday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph S | 71% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 5 mph NE | 68% |
| Monday | 83°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 46% |
| Monday Night | 61°F | Partly Cloudy | 5 to 10 mph NE | 8% |
| Tuesday | 79°F | Mostly Sunny | 10 mph NE | 5% |
| Tuesday Night | 57°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Wednesday | 80°F | Mostly Sunny | 5 to 10 mph NE | 8% |
| Wednesday Night | 60°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph NE | 15% |
| Thursday | 81°F | Chance Rain Showers | 5 mph E | 25% |
| Thursday Night | 62°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph E | 15% |
| Friday | 81°F | Slight Chance Rain Showers | 5 mph E | 20% |
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 Sep 19, 2026.