Trenton, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trenton, a city in Grundy County, Missouri.
This Afternoon
89°F
Sunny
Sunny, with a high near 89. Heat index values as high as 99. South southeast wind around 6 mph.
7-day forecast for Trenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 89°F | Sunny | 6 mph SSE | 5% |
| Tonight | 72°F | Partly Cloudy | 6 mph SSE | 10% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 16% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NNW | 73% |
| Sunday | 75°F | Chance Showers And Thunderstorms | 3 to 8 mph N | 50% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 54% |
| Monday | 65°F | Chance Rain Showers | 9 mph NE | 54% |
| Monday Night | 54°F | Chance Rain Showers | 5 to 8 mph NNE | 42% |
| Tuesday | 62°F | Mostly Cloudy | 8 mph NE | 10% |
| Tuesday Night | 49°F | Mostly Cloudy | 2 to 7 mph NE | 5% |
| Wednesday | 67°F | Mostly Sunny | 6 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph ENE | 4% |
| Thursday | 68°F | Partly Sunny | 1 to 5 mph E | 12% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph ENE | 13% |
Forecast source: National Weather Service (api.weather.gov) for Trenton (40.081, -93.602). Updated through the day.
Growing snapshot for Trenton
Last spring frost
Apr 16
First fall frost
Oct 20
Growing season
184 days
Hardiness zone
6a
More local growing data for Trenton: nearby ZIP 64683 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Trenton, Mo (0.7 mi from Trenton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.