Grant City, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grant City, a town in Worth County, Missouri.
Tonight
45°F
Cloudy
Cloudy, with a low around 45. Northwest wind around 12 mph, with gusts as high as 21 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Grant City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Cloudy | 12 mph NW | 10% |
| Wednesday | 53°F | Mostly Cloudy | 9 to 14 mph W | 7% |
| Wednesday Night | 42°F | Mostly Cloudy | 8 mph W | 2% |
| Thursday | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph NW | 17% |
| Thursday Night | 41°F | Mostly Cloudy | 6 mph NNW | 4% |
| Friday | 51°F | Mostly Sunny | 3 to 7 mph N | 2% |
| Friday Night | 32°F | Partly Cloudy | 2 mph NNE | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 3 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 59°F | Sunny | 5 mph W | 0% |
| Sunday Night | 38°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 65°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 3 mph W | 0% |
| Tuesday | 65°F | Sunny | 5 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Grant City (40.486, -94.413). Updated through the day.
Growing snapshot for Grant City
Last spring frost
Apr 24
First fall frost
Oct 14
Growing season
172 days
Hardiness zone
5b
More local growing data for Grant City: nearby ZIP 64456 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grant City, Mo (1.3 mi from Grant City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.