Oskaloosa, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oskaloosa, a city in Jefferson County, Kansas.
This Afternoon
93°F
Sunny
Sunny, with a high near 93. South wind around 10 mph.
7-day forecast for Oskaloosa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Sunny | 10 mph S | 9% |
| Tonight | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 72% |
| Sunday | 77°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 38% |
| Sunday Night | 61°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph N | 37% |
| Monday | 69°F | Slight Chance Rain Showers | 5 to 10 mph N | 19% |
| Monday Night | 53°F | Mostly Cloudy | 5 to 10 mph N | 11% |
| Tuesday | 66°F | Partly Sunny | 5 mph NE | 4% |
| Tuesday Night | 50°F | Partly Cloudy | 5 mph NE | 2% |
| Wednesday | 69°F | Mostly Sunny | 5 mph E | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph E | 9% |
| Thursday | 73°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 32% |
| Thursday Night | 59°F | Chance Rain Showers | 0 mph | 29% |
| Friday | 76°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% |
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 Sep 20, 2026.