Osborn, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osborn, a city in Dekalb County, Missouri.
Tonight
45°F
Cloudy
Cloudy, with a low around 45. West northwest wind 9 to 13 mph, with gusts as high as 21 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Osborn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Cloudy | 9 to 13 mph WNW | 10% |
| Wednesday | 56°F | Mostly Cloudy | 9 to 14 mph W | 3% |
| Wednesday Night | 40°F | Partly Cloudy | 8 mph W | 1% |
| Thursday | 55°F | Mostly Sunny | 7 to 10 mph WNW | 10% |
| Thursday Night | 41°F | Mostly Cloudy | 7 mph NNW | 5% |
| Friday | 54°F | Partly Sunny | 5 to 8 mph N | 1% |
| Friday Night | 33°F | Mostly Cloudy | 0 to 3 mph NE | 0% |
| Saturday | 55°F | Mostly Sunny | 3 mph SSW | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph W | 0% |
| Sunday | 61°F | Sunny | 5 mph W | 0% |
| Sunday Night | 38°F | Clear | 5 mph SW | 0% |
| Monday | 66°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph WSW | 0% |
| Tuesday | 67°F | Sunny | 5 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Osborn (39.750, -94.357). Updated through the day.
Growing snapshot for Osborn
Last spring frost
Apr 15
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6a
More local growing data for Osborn: nearby ZIP 64474 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cameron, Mo (6.7 mi from Osborn). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.