Osborn, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osborn, a city in Dekalb County, Missouri.
This Afternoon
91°F
Sunny
Sunny, with a high near 91. Heat index values as high as 96. South southwest wind 7 to 10 mph.
7-day forecast for Osborn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Sunny | 7 to 10 mph SSW | 2% |
| Tonight | 73°F | Partly Cloudy | 5 to 9 mph SSW | 10% |
| Saturday | 89°F | Slight Chance Showers And Thunderstorms | 8 to 13 mph SW | 19% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph NNW | 71% |
| Sunday | 76°F | Chance Showers And Thunderstorms | 5 to 9 mph N | 40% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 9 mph NE | 53% |
| Monday | 66°F | Chance Rain Showers | 10 mph NNE | 53% |
| Monday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 10 mph NNE | 21% |
| Tuesday | 64°F | Mostly Cloudy | 9 mph NE | 8% |
| Tuesday Night | 49°F | Mostly Cloudy | 3 to 8 mph NE | 5% |
| Wednesday | 67°F | Mostly Sunny | 6 mph ENE | 2% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 mph E | 6% |
| Thursday | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph E | 15% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 3 mph E | 17% |
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 Sep 18, 2026.