Winchester, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winchester, a town in Okmulgee County, Oklahoma.
This Afternoon
97°F
Sunny
Sunny, with a high near 97. Heat index values as high as 100. South wind around 5 mph.
7-day forecast for Winchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 97°F | Sunny | 5 mph S | 0% |
| Tonight | 74°F | Mostly Clear | 5 mph S | 0% |
| Saturday | 98°F | Sunny | 5 to 10 mph S | 1% |
| Saturday Night | 74°F | Partly Cloudy | 5 to 10 mph S | 12% |
| Sunday | 95°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 57% |
| Sunday Night | 67°F | Showers And Thunderstorms Likely | 5 mph NE | 68% |
| Monday | 85°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 62% |
| Monday Night | 63°F | Partly Cloudy | 5 mph N | 9% |
| Tuesday | 81°F | Mostly Sunny | 10 mph NE | 8% |
| Tuesday Night | 60°F | Partly Cloudy | 5 mph NE | 3% |
| Wednesday | 83°F | Mostly Sunny | 5 mph NE | 8% |
| Wednesday Night | 62°F | Partly Cloudy | 5 mph NE | 5% |
| Thursday | 83°F | Mostly Sunny | 5 mph NE | 11% |
| Thursday Night | 64°F | Partly Cloudy | 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Winchester (35.791, -95.998). Updated through the day.
Growing snapshot for Winchester
Last spring frost
Apr 8
First fall frost
Oct 28
Growing season
203 days
Hardiness zone
7b
More local growing data for Winchester: nearby ZIP 74421 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Okmulgee Wtr Wks, Ok (9.6 mi from Winchester). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.