Green Castle, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Green Castle, a city in Adair County, Missouri.
This Afternoon
86°F
Sunny
Sunny, with a high near 86. Heat index values as high as 95. Southeast wind around 8 mph.
7-day forecast for Green Castle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Sunny | 8 mph SE | 7% |
| Tonight | 73°F | Partly Cloudy | 8 mph SSE | 10% |
| Saturday | 87°F | Partly Sunny | 7 to 10 mph SSW | 14% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NW | 70% |
| Sunday | 75°F | Chance Showers And Thunderstorms | 3 to 10 mph N | 54% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 mph NE | 58% |
| Monday | 64°F | Showers And Thunderstorms Likely | 12 mph NE | 59% |
| Monday Night | 53°F | Chance Rain Showers | 7 to 10 mph NNE | 51% |
| Tuesday | 61°F | Mostly Cloudy | 10 mph NE | 14% |
| Tuesday Night | 48°F | Mostly Cloudy | 3 to 8 mph NE | 6% |
| Wednesday | 66°F | Mostly Sunny | 6 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph ENE | 2% |
| Thursday | 68°F | Partly Sunny | 1 to 5 mph ENE | 8% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph ENE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Green Castle (40.259, -92.876). Updated through the day.
Growing snapshot for Green Castle
Last spring frost
Apr 26
First fall frost
Oct 14
Growing season
169 days
Hardiness zone
6a
More local growing data for Green Castle: nearby ZIP 63544 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Green City 5N, Mo (9 mi from Green Castle). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.