Trenton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trenton, a community in Henry County, Iowa.
Today
84°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. South wind 5 to 10 mph. Chance of precipitation is 40%.
7-day forecast for Trenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 44% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NW | 71% |
| Sunday | 72°F | Showers And Thunderstorms | 10 to 15 mph NE | 75% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 64% |
| Monday | 63°F | Showers And Thunderstorms Likely | 15 mph NE | 64% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 53% |
| Tuesday | 61°F | Chance Rain Showers | 10 mph NE | 42% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph NE | 5% |
| Wednesday | 66°F | Sunny | 5 mph NE | 0% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 68°F | Partly Sunny | 0 to 5 mph NE | 6% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Friday | 72°F | Mostly Sunny | 5 mph E | 5% |
| Friday Night | 55°F | Partly Cloudy | 0 to 5 mph E | 7% |
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 Sep 19, 2026.