Olathe, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olathe, a city in Johnson County, Kansas.
Today
92°F
Mostly Sunny
Mostly sunny, with a high near 92. Heat index values as high as 95. South wind around 6 mph.
7-day forecast for Olathe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Mostly Sunny | 6 mph S | 6% |
| Tonight | 72°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 6 mph SSE | 18% |
| Wednesday | 87°F | Chance Showers And Thunderstorms | 7 mph ESE | 45% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 7 mph NNE | 73% |
| Thursday | 86°F | Showers And Thunderstorms Likely then Partly Sunny | 5 mph NE | 73% |
| Thursday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 mph ESE | 39% |
| Friday | 88°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 6 mph S | 39% |
| Friday Night | 71°F | Mostly Clear | 6 mph S | 13% |
| Saturday | 91°F | Sunny | 6 to 10 mph S | 13% |
| Saturday Night | 74°F | Mostly Clear | 10 mph S | 2% |
| Sunday | 93°F | Sunny | 13 mph SSW | 1% |
| Sunday Night | 75°F | Mostly Clear | 13 mph S | 1% |
| Monday | 93°F | Sunny | 14 mph SSW | 1% |
| Monday Night | 76°F | Mostly Clear | 13 mph S | 1% |
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
Nearby towns & communities
Bonner Springs
De Soto
Edgerton
Fairway
Gardner
Lake Quivira
Leawood
Lenexa
Merriam
Mission
Mission Hills
Overland Park
Prairie Village
Roeland Park
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 Aug 4, 2026.