Trenton, UT Weather & Growing Conditions
Today
90°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 90. North wind 3 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Patchy Smoke | 3 to 7 mph N | 0% |
| Tonight | 50°F | Areas Of Smoke | 2 to 7 mph NNW | 0% |
| Wednesday | 92°F | Areas Of Smoke | 1 to 7 mph WNW | 0% |
| Wednesday Night | 54°F | Patchy Smoke then Mostly Clear | 2 to 6 mph SSE | 0% |
| Thursday | 97°F | Sunny | 1 to 6 mph NE | 0% |
| Thursday Night | 59°F | Clear | 1 to 6 mph ESE | 0% |
| Friday | 100°F | Sunny | 1 to 7 mph SSE | 0% |
| Friday Night | 62°F | Mostly Clear | 2 to 8 mph N | 0% |
| Saturday | 100°F | Sunny | 1 to 7 mph NW | 0% |
| Saturday Night | 64°F | Mostly Clear | 2 to 9 mph NNE | 0% |
| Sunday | 98°F | Mostly Sunny | 2 to 10 mph SW | 3% |
| Sunday Night | 63°F | Mostly Clear | 3 to 9 mph SE | 2% |
| Monday | 97°F | Mostly Sunny | 2 to 10 mph SSW | 2% |
| Monday Night | 61°F | Partly Cloudy | 3 to 10 mph SSE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Trenton, UT
Last spring frost
May 17
First fall frost
Sep 18
Growing season
121 days
Hardiness zone
5b
Explore more for Trenton, UT: full frost dates · planting calendar · Utah frost dates
Climate data from the nearest NOAA station, Trenton, Ut (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.