Mahaska, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mahaska, a city in Washington County, Kansas.
Tonight
39°F
Cloudy
Cloudy. Low around 39, with temperatures rising to around 42 overnight. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
7-day forecast for Mahaska
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Cloudy | 9 to 14 mph NW | 10% |
| Wednesday | 53°F | Mostly Sunny | 6 to 12 mph WNW | 0% |
| Wednesday Night | 37°F | Mostly Clear | 3 to 7 mph WNW | 8% |
| Thursday | 52°F | Slight Chance Rain Showers then Partly Sunny | 6 to 10 mph NW | 16% |
| Thursday Night | 34°F | Partly Cloudy | 5 mph NNW | 0% |
| Friday | 53°F | Partly Sunny | 0 to 3 mph N | 0% |
| Friday Night | 34°F | Mostly Cloudy | 2 mph SSW | 0% |
| Saturday | 60°F | Mostly Sunny | 5 mph WSW | 3% |
| Saturday Night | 37°F | Mostly Clear | 3 mph W | 5% |
| Sunday | 65°F | Sunny | 5 mph WSW | 2% |
| Sunday Night | 41°F | Clear | 7 mph SSW | 0% |
| Monday | 67°F | Sunny | 6 to 10 mph WSW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph NNW | 0% |
| Tuesday | 65°F | Mostly Sunny | 3 to 7 mph ENE | 1% |
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.