Trenton, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trenton, a town in Cache County, Utah.
Tonight
33°F
Mostly Cloudy then Patchy Fog
Patchy fog after 2am. Mostly cloudy. Low around 33, with temperatures rising to around 35 overnight. North northeast wind around 3 mph.
7-day forecast for Trenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Mostly Cloudy then Patchy Fog | 3 mph NNE | 3% |
| Wednesday | 54°F | Patchy Fog then Partly Sunny | 3 mph NNW | 8% |
| Wednesday Night | 30°F | Areas Of Fog | 2 mph NNE | 5% |
| Thursday | 51°F | Areas Of Fog then Slight Chance Light Rain | 2 mph SSE | 18% |
| Thursday Night | 30°F | Slight Chance Light Rain then Areas Of Fog | 1 mph NNE | 18% |
| Friday | 53°F | Areas Of Fog then Mostly Sunny | 2 mph NNW | 1% |
| Friday Night | 30°F | Partly Cloudy | 2 mph E | 1% |
| Saturday | 56°F | Sunny | 1 mph N | 0% |
| Saturday Night | 32°F | Mostly Clear | 1 mph E | 0% |
| Sunday | 59°F | Sunny | 3 mph SSE | 0% |
| Sunday Night | 35°F | Partly Cloudy | 1 mph ESE | 0% |
| Monday | 61°F | Mostly Sunny | 1 mph SE | 1% |
| Monday Night | 36°F | Partly Cloudy | 1 mph SE | 4% |
| Tuesday | 60°F | Mostly Sunny | 1 mph S | 5% |
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.