Mahaska, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mahaska, a city in Washington County, Kansas.
Today
80°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly sunny. High near 80, with temperatures falling to around 77 in the afternoon. Northeast wind 5 to 12 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mahaska
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Slight Chance Showers And Thunderstorms | 5 to 12 mph NE | 23% |
| Tonight | 61°F | Chance Showers And Thunderstorms | 9 to 14 mph NNE | 40% |
| Wednesday | 71°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 8 to 12 mph NE | 56% |
| Wednesday Night | 58°F | Partly Cloudy | 2 to 8 mph NE | 5% |
| Thursday | 80°F | Mostly Sunny | 2 to 6 mph E | 2% |
| Thursday Night | 63°F | Chance Showers And Thunderstorms | 3 to 7 mph SE | 33% |
| Friday | 86°F | Slight Chance Showers And Thunderstorms then Sunny | 3 to 7 mph S | 23% |
| Friday Night | 67°F | Mostly Clear | 6 mph SSE | 3% |
| Saturday | 89°F | Sunny | 5 to 13 mph S | 2% |
| Saturday Night | 71°F | Mostly Clear | 13 mph S | 2% |
| Sunday | 92°F | Sunny | 10 to 14 mph S | 3% |
| Sunday Night | 72°F | Mostly Clear | 16 mph S | 3% |
| Monday | 93°F | Mostly Sunny | 13 to 16 mph SSW | 3% |
| Monday Night | 73°F | Mostly Clear | 16 mph S | 8% |
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 Aug 4, 2026.