Winchester, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winchester, a town in Okmulgee County, Oklahoma.
Tonight
47°F
Partly Cloudy
Partly cloudy, with a low around 47. Northwest wind 5 to 10 mph.
7-day forecast for Winchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Partly Cloudy | 5 to 10 mph NW | 1% |
| Wednesday | 67°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 47°F | Mostly Clear | 0 mph | 0% |
| Thursday | 63°F | Partly Sunny then Rain Showers Likely | 0 to 5 mph SW | 55% |
| Thursday Night | 44°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph N | 21% |
| Friday | 60°F | Mostly Sunny | 5 mph N | 0% |
| Friday Night | 42°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 61°F | Mostly Sunny | 0 to 5 mph N | 2% |
| Saturday Night | 42°F | Mostly Clear | 0 mph | 3% |
| Sunday | 66°F | Sunny | 0 to 5 mph W | 3% |
| Sunday Night | 42°F | Clear | 0 to 5 mph SW | 0% |
| Monday | 69°F | Sunny | 5 mph S | 0% |
| Monday Night | 46°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 72°F | Sunny | 5 mph S | 0% |
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 Nov 4, 2026.