Cosby, MO Weather & Growing Conditions
Tonight
45°F
Patchy Drizzle
Patchy drizzle before 2am. Cloudy, with a low around 45. West northwest wind 9 to 14 mph, with gusts as high as 21 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Patchy Drizzle | 9 to 14 mph WNW | 12% |
| Wednesday | 56°F | Mostly Cloudy | 10 to 16 mph W | 3% |
| Wednesday Night | 41°F | Partly Cloudy | 6 to 9 mph W | 1% |
| Thursday | 55°F | Mostly Sunny | 8 to 12 mph WNW | 10% |
| Thursday Night | 41°F | Mostly Cloudy | 8 mph NNW | 4% |
| Friday | 54°F | Partly Sunny | 5 to 8 mph N | 2% |
| Friday Night | 34°F | Partly Cloudy | 0 to 3 mph NNE | 0% |
| Saturday | 56°F | Mostly Sunny | 0 to 3 mph SSW | 0% |
| Saturday Night | 36°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 62°F | Sunny | 5 mph W | 0% |
| Sunday Night | 38°F | Clear | 3 mph SSW | 0% |
| Monday | 67°F | Sunny | 3 to 9 mph SSW | 0% |
| Monday Night | 42°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 68°F | Sunny | 2 to 6 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cosby, MO
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
184 days
Hardiness zone
6a
Explore more for Cosby, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Cosby 2W, Mo (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.