Winchester, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winchester, a city in Jefferson County, Kansas.
Tonight
65°F
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. West wind around 5 mph. Chance of precipitation is 70%.
7-day forecast for Winchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph W | 71% |
| Sunday | 76°F | Chance Showers And Thunderstorms | 5 mph N | 35% |
| Sunday Night | 61°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph N | 37% |
| Monday | 68°F | Slight Chance Rain Showers | 5 to 10 mph N | 23% |
| Monday Night | 53°F | Mostly Cloudy | 5 mph N | 14% |
| Tuesday | 65°F | Partly Sunny | 5 mph NE | 5% |
| Tuesday Night | 49°F | Partly Cloudy | 5 mph NE | 3% |
| Wednesday | 67°F | Mostly Sunny | 5 mph E | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph E | 10% |
| Thursday | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 33% |
| Thursday Night | 58°F | Chance Rain Showers | 0 mph | 30% |
| Friday | 75°F | Chance Rain Showers | 0 to 5 mph E | 33% |
| Friday Night | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph E | 15% |
| Saturday | 76°F | Slight Chance Rain Showers | 5 mph SE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Winchester (39.323, -95.269). Updated through the day.
Growing snapshot for Winchester
Last spring frost
Apr 16
First fall frost
Oct 22
Growing season
188 days
Hardiness zone
6b
More local growing data for Winchester: nearby ZIP 66097 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Oskaloosa 4 Ne, Ks (6.2 mi from Winchester). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.