Vassar, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vassar, a community in Osage County, Kansas.
Overnight
43°F
Mostly Cloudy
Mostly cloudy, with a low around 43. West wind around 10 mph.
7-day forecast for Vassar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 43°F | Mostly Cloudy | 10 mph W | 0% |
| Wednesday | 58°F | Mostly Sunny | 5 to 10 mph W | 0% |
| Wednesday Night | 38°F | Clear | 0 to 5 mph W | 0% |
| Thursday | 57°F | Sunny | 5 to 10 mph NW | 2% |
| Thursday Night | 40°F | Partly Cloudy | 5 mph N | 2% |
| Friday | 55°F | Partly Sunny | 5 mph N | 1% |
| Friday Night | 34°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 57°F | Mostly Sunny | 0 mph | 1% |
| Saturday Night | 35°F | Mostly Clear | 0 mph | 0% |
| Sunday | 63°F | Sunny | 0 mph | 0% |
| Sunday Night | 38°F | Clear | 0 mph | 0% |
| Monday | 69°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 41°F | Clear | 0 to 5 mph SW | 0% |
| Tuesday | 69°F | Sunny | 0 to 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Vassar (38.649, -95.610). Updated through the day.
Growing snapshot for Vassar
Last spring frost
Apr 8
First fall frost
Oct 31
Growing season
205 days
Hardiness zone
6b
More local growing data for Vassar: nearby ZIP 66543 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Pomona Lake, Ks (1.8 mi from Vassar). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.