Olathe, KS Weather & Growing Conditions
Tonight
47°F
Cloudy
Cloudy, with a low around 47. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Cloudy | 10 to 14 mph WNW | 10% |
| Wednesday | 57°F | Partly Sunny | 7 to 13 mph W | 3% |
| Wednesday Night | 41°F | Mostly Clear | 6 mph W | 5% |
| Thursday | 57°F | Mostly Sunny then Slight Chance Rain Showers | 8 mph NW | 15% |
| Thursday Night | 41°F | Mostly Cloudy | 6 mph NNW | 2% |
| Friday | 55°F | Partly Sunny | 7 mph N | 4% |
| Friday Night | 39°F | Partly Cloudy | 3 mph N | 0% |
| Saturday | 58°F | Partly Sunny | 3 mph W | 2% |
| Saturday Night | 39°F | Mostly Clear | 5 mph WSW | 6% |
| Sunday | 63°F | Sunny | 5 mph W | 5% |
| Sunday Night | 41°F | Mostly Clear | 6 mph SW | 0% |
| Monday | 67°F | Sunny | 6 to 10 mph SSW | 0% |
| Monday Night | 44°F | Mostly Clear | 6 mph SW | 0% |
| Tuesday | 68°F | Sunny | 7 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Olathe, KS
Last spring frost
Apr 8
First fall frost
Oct 29
Growing season
204 days
Hardiness zone
6b
Explore more for Olathe, KS: full frost dates · planting calendar · Kansas frost dates
Climate data from the nearest NOAA station, Olathe Johnson Co Exec Ap, Ks (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.