Mahaska, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mahaska, a city in Washington County, Kansas.
Overnight
39°F
Mostly Cloudy
Mostly cloudy. Low around 39, with temperatures rising to around 41 overnight. Northwest wind around 10 mph, with gusts as high as 17 mph.
7-day forecast for Mahaska
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Mostly Cloudy | 10 mph NW | 0% |
| Wednesday | 52°F | Partly Sunny | 6 to 12 mph WNW | 0% |
| Wednesday Night | 37°F | Mostly Clear | 3 to 7 mph WNW | 1% |
| Thursday | 52°F | Partly Sunny | 6 to 10 mph NNW | 9% |
| Thursday Night | 34°F | Partly Cloudy | 5 mph N | 1% |
| Friday | 51°F | Mostly Sunny | 0 to 3 mph NNE | 0% |
| Friday Night | 32°F | Mostly Cloudy | 1 mph S | 0% |
| Saturday | 57°F | Mostly Sunny | 1 to 5 mph SW | 1% |
| Saturday Night | 36°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 63°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 40°F | Clear | 6 mph SSW | 0% |
| Monday | 66°F | Sunny | 6 to 9 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 65°F | Mostly Sunny | 5 mph ENE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mahaska (39.987, -97.354). Updated through the day.
Growing snapshot for Mahaska
Last spring frost
Apr 25
First fall frost
Oct 15
Growing season
169 days
Hardiness zone
6a
More local growing data for Mahaska: nearby ZIP 66955 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fairbury 5S, Ne (10.4 mi from Mahaska). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.