Olathe, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olathe, a town in Delta County, Colorado.
Today
99°F
Patchy Smoke
Patchy smoke before 5pm. Sunny, with a high near 99. Northwest wind 0 to 15 mph.
7-day forecast for Olathe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Patchy Smoke | 0 to 15 mph NW | 1% |
| Tonight | 59°F | Patchy Smoke | 5 to 15 mph S | 0% |
| Wednesday | 97°F | Sunny | 5 to 15 mph WSW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 5 to 15 mph SSW | 0% |
| Thursday | 98°F | Sunny | 0 to 15 mph ENE | 0% |
| Thursday Night | 58°F | Mostly Clear | 5 to 15 mph SSW | 0% |
| Friday | 99°F | Sunny | 0 to 10 mph NE | 0% |
| Friday Night | 59°F | Clear | 5 to 10 mph SW | 0% |
| Saturday | 100°F | Sunny | 0 to 10 mph NNE | 0% |
| Saturday Night | 62°F | Mostly Clear | 10 mph SW | 0% |
| Sunday | 98°F | Sunny | 0 to 10 mph NNE | 2% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph WSW | 15% |
| Monday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph NNE | 17% |
| Monday Night | 61°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph SSW | 25% |
Forecast source: National Weather Service (api.weather.gov) for Olathe (38.608, -107.983). Updated through the day.
Growing snapshot for Olathe
Last spring frost
May 1
First fall frost
Oct 7
Growing season
159 days
Hardiness zone
6b
More local growing data for Olathe: nearby ZIP 81410 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Delta 3E, Co (4.7 mi from Olathe). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.