Trenton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trenton, a community in Henry County, Iowa.
Today
88°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Mostly sunny. High near 88, with temperatures falling to around 85 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast for Trenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 19% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 54% |
| Wednesday | 79°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph NE | 81% |
| Wednesday Night | 61°F | Showers And Thunderstorms Likely | 5 mph N | 70% |
| Thursday | 81°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph NE | 51% |
| Thursday Night | 61°F | Mostly Clear | 0 mph | 5% |
| Friday | 83°F | Sunny | 0 to 5 mph SE | 5% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 16% |
| Saturday | 87°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph S | 15% |
| Saturday Night | 70°F | Mostly Clear | 5 to 10 mph S | 9% |
| Sunday | 89°F | Sunny | 10 mph S | 9% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 mph S | 22% |
| Monday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph S | 22% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph S | 28% |
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 Aug 4, 2026.