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
69°F
Chance Rain Showers
A chance of rain showers. Partly sunny. High near 69, with temperatures falling to around 62 in the afternoon. South wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Green Castle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Rain Showers | 13 to 16 mph S | 53% |
| Tonight | 48°F | Mostly Cloudy | 10 to 14 mph WSW | 12% |
| Wednesday | 54°F | Mostly Cloudy | 13 to 16 mph WSW | 11% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph WSW | 3% |
| Thursday | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 7 to 12 mph WNW | 23% |
| Thursday Night | 42°F | Mostly Cloudy | 7 mph NNW | 12% |
| Friday | 52°F | Partly Sunny | 5 to 9 mph N | 6% |
| Friday Night | 36°F | Mostly Cloudy | 2 mph N | 0% |
| Saturday | 55°F | Partly Sunny | 0 to 5 mph WNW | 1% |
| Saturday Night | 37°F | Mostly Clear | 0 to 3 mph W | 6% |
| Sunday | 61°F | Sunny | 3 to 7 mph W | 5% |
| Sunday Night | 38°F | Mostly Clear | 5 mph WSW | 1% |
| Monday | 65°F | Sunny | 5 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 6 mph W | 0% |
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 Nov 3, 2026.