Trenton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trenton, a community in Henry County, Iowa.
Overnight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. West wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Trenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 10 mph W | 10% |
| Wednesday | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph W | 17% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph W | 8% |
| Thursday | 55°F | Rain Showers Likely | 10 mph W | 63% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 16% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 4% |
| Friday Night | 30°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 58°F | Sunny | 5 mph W | 1% |
| Sunday Night | 35°F | Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 0 to 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Trenton (41.066, -91.639). Updated through the day.
Growing snapshot for Trenton
Last spring frost
Apr 28
First fall frost
Oct 11
Growing season
165 days
Hardiness zone
5b
More local growing data for Trenton: nearby ZIP 52654 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Coppock
Lowell
Mount Pleasant
Mount Union
New London
Olds
Salem
Swedesburg
Wayland
Westwood
Winfield
Climate data from the nearest NOAA station, Washington, Ia (10 mi from Trenton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.