Olean, MO Weather & Growing Conditions
Today
99°F
Sunny
Sunny. High near 99, with temperatures falling to around 97 in the afternoon. Heat index values as high as 101. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 6 to 10 mph SW | 1% |
| Tonight | 72°F | Partly Cloudy | 6 mph SW | 4% |
| Sunday | 90°F | Slight Chance Showers And Thunderstorms | 6 mph W | 27% |
| Sunday Night | 68°F | Showers And Thunderstorms | 3 mph N | 83% |
| Monday | 77°F | Showers And Thunderstorms | 2 to 6 mph NE | 83% |
| Monday Night | 60°F | Chance Rain Showers then Mostly Cloudy | 6 mph N | 31% |
| Tuesday | 71°F | Partly Sunny | 6 mph N | 11% |
| Tuesday Night | 53°F | Partly Cloudy | 2 to 6 mph NE | 3% |
| Wednesday | 74°F | Sunny | 3 mph NE | 1% |
| Wednesday Night | 55°F | Partly Cloudy | 2 mph NE | 1% |
| Thursday | 77°F | Mostly Sunny | 2 mph NE | 3% |
| Thursday Night | 59°F | Partly Cloudy | 2 mph NE | 8% |
| Friday | 77°F | Slight Chance Rain Showers | 3 mph E | 19% |
| Friday Night | 59°F | Mostly Cloudy | 3 mph E | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Olean, MO
Last spring frost
Apr 7
First fall frost
Nov 1
Growing season
208 days
Hardiness zone
6b
Explore more for Olean, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Eldon, Mo (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.