Oskaloosa, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oskaloosa, a city in Jefferson County, Kansas.
Overnight
44°F
Cloudy
Cloudy, with a low around 44. Northwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Oskaloosa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Cloudy | 10 mph NW | 1% |
| Wednesday | 56°F | Partly Sunny | 5 to 10 mph W | 0% |
| Wednesday Night | 39°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 55°F | Mostly Sunny | 5 to 10 mph NW | 1% |
| Thursday Night | 41°F | Partly Cloudy | 5 mph N | 1% |
| Friday | 53°F | Partly Sunny | 0 to 5 mph N | 2% |
| Friday Night | 35°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 55°F | Mostly Sunny | 0 mph | 0% |
| Saturday Night | 36°F | Mostly Clear | 0 mph | 0% |
| Sunday | 61°F | Sunny | 0 mph | 0% |
| Sunday Night | 39°F | Clear | 0 to 5 mph SW | 0% |
| Monday | 67°F | Sunny | 5 mph SW | 0% |
| Monday Night | 42°F | Clear | 0 to 5 mph SW | 0% |
| Tuesday | 67°F | Sunny | 0 to 5 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Oskaloosa (39.216, -95.315). Updated through the day.
Growing snapshot for Oskaloosa
Last spring frost
Apr 16
First fall frost
Oct 22
Growing season
188 days
Hardiness zone
6b
More local growing data for Oskaloosa: nearby ZIP 66066 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Oskaloosa 4 Ne, Ks (4.1 mi from Oskaloosa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.