Osborn, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osborn, a city in Dekalb County, Missouri.
Today
89°F
Mostly Sunny
Mostly sunny, with a high near 89. South southwest wind around 6 mph.
7-day forecast for Osborn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny | 6 mph SSW | 12% |
| Tonight | 68°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 to 7 mph ENE | 39% |
| Wednesday | 80°F | Showers And Thunderstorms Likely | 8 mph ENE | 61% |
| Wednesday Night | 64°F | Showers And Thunderstorms Likely | 5 to 8 mph NNE | 69% |
| Thursday | 82°F | Showers And Thunderstorms Likely then Mostly Sunny | 6 mph ENE | 69% |
| Thursday Night | 65°F | Partly Cloudy | 3 mph SE | 11% |
| Friday | 86°F | Mostly Sunny | 3 to 7 mph S | 14% |
| Friday Night | 69°F | Slight Chance Showers And Thunderstorms | 6 mph S | 16% |
| Saturday | 90°F | Sunny | 5 to 10 mph S | 8% |
| Saturday Night | 74°F | Mostly Clear | 9 to 13 mph S | 6% |
| Sunday | 92°F | Sunny | 14 mph SSW | 2% |
| Sunday Night | 75°F | Mostly Clear | 10 to 14 mph S | 5% |
| Monday | 93°F | Mostly Sunny | 15 mph SSW | 5% |
| Monday Night | 75°F | Partly Cloudy | 14 mph SSW | 10% |
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 Aug 4, 2026.