Olathe, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olathe, a city in Johnson County, Kansas.
Overnight
47°F
Patchy Drizzle
Patchy drizzle before 3am. Cloudy, with a low around 47. West northwest wind around 10 mph.
7-day forecast for Olathe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Patchy Drizzle | 10 mph WNW | 9% |
| Wednesday | 57°F | Partly Sunny | 7 to 12 mph W | 0% |
| Wednesday Night | 42°F | Mostly Clear | 6 mph W | 0% |
| Thursday | 56°F | Sunny | 5 to 8 mph WNW | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 6 mph NNW | 5% |
| Friday | 55°F | Partly Sunny | 7 mph N | 2% |
| Friday Night | 37°F | Mostly Cloudy | 3 mph NE | 0% |
| Saturday | 55°F | Mostly Sunny | 2 mph S | 0% |
| Saturday Night | 38°F | Mostly Clear | 2 mph SW | 0% |
| Sunday | 61°F | Sunny | 3 mph W | 0% |
| Sunday Night | 40°F | Clear | 5 mph SW | 0% |
| Monday | 67°F | Sunny | 5 to 8 mph SSW | 0% |
| Monday Night | 45°F | Clear | 5 mph SW | 0% |
| Tuesday | 68°F | Sunny | 6 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Olathe (38.882, -94.820). Updated through the day.
Growing snapshot for Olathe
Last spring frost
Apr 8
First fall frost
Oct 29
Growing season
204 days
Hardiness zone
6b
More local growing data for Olathe: nearby ZIP 66062 weather · frost dates · planting calendar · Kansas frost dates
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Mission
Mission Hills
Overland Park
Prairie Village
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Shawnee
Westwood
Climate data from the nearest NOAA station, Olathe Johnson Co Exec Ap, Ks (2.6 mi from Olathe). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.