Trenton, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trenton, a town in Cache County, Utah.
Today
54°F
Partly Sunny
Partly sunny. High near 54, with temperatures falling to around 50 in the afternoon. Northwest wind around 3 mph.
7-day forecast for Trenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Partly Sunny | 3 mph NW | 7% |
| Tonight | 31°F | Areas Of Fog | 2 mph NE | 3% |
| Thursday | 51°F | Areas Of Fog then Slight Chance Light Rain | 2 mph SW | 15% |
| Thursday Night | 31°F | Slight Chance Light Rain then Areas Of Fog | 1 mph ESE | 15% |
| Friday | 52°F | Areas Of Fog then Sunny | 2 mph NNW | 0% |
| Friday Night | 29°F | Mostly Clear | 1 mph ESE | 0% |
| Saturday | 55°F | Sunny | 1 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 1 mph ENE | 0% |
| Sunday | 59°F | Sunny | 0 to 3 mph S | 0% |
| Sunday Night | 35°F | Partly Cloudy | 2 mph ESE | 0% |
| Monday | 60°F | Mostly Sunny | 1 mph S | 0% |
| Monday Night | 36°F | Mostly Cloudy | 1 mph E | 0% |
| Tuesday | 60°F | Mostly Sunny | 1 mph SE | 1% |
| Tuesday Night | 36°F | Partly Cloudy | 1 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov) for Trenton (41.914, -111.936). Updated through the day.
Growing snapshot for Trenton
Last spring frost
May 17
First fall frost
Sep 18
Growing season
121 days
Hardiness zone
5b
More local growing data for Trenton: nearby ZIP 84338 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Amalga
Avon
Benson
Cache
Clarkston
Cornish
Hyde Park
Hyrum
Lewiston
Logan
Mendon
Millville
Newton
Nibley
North Logan
Paradise
Peter
Providence
Richmond
River Heights
Smithfield
Wellsville
Climate data from the nearest NOAA station, Trenton, Ut (1.2 mi from Trenton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.