Alton, UT Weather & Growing Conditions
Overnight
42°F
Clear
Clear. Low around 42, with temperatures rising to around 44 overnight. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Clear | 0 mph | 1% |
| Saturday | 70°F | Sunny | 1 to 8 mph WSW | 1% |
| Saturday Night | 40°F | Mostly Clear | 1 to 6 mph NW | 0% |
| Sunday | 71°F | Sunny | 6 mph WNW | 0% |
| Sunday Night | 43°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Monday | 70°F | Mostly Sunny | 1 to 6 mph E | 4% |
| Monday Night | 43°F | Chance Showers And Thunderstorms | 0 to 3 mph ENE | 52% |
| Tuesday | 66°F | Showers And Thunderstorms Likely | 0 to 7 mph ESE | 62% |
| Tuesday Night | 40°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph N | 22% |
| Wednesday | 68°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph E | 19% |
| Wednesday Night | 42°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph NE | 10% |
| Thursday | 69°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph ENE | 24% |
| Thursday Night | 44°F | Slight Chance Showers And Thunderstorms | 0 to 3 mph NE | 21% |
| Friday | 68°F | Chance Showers And Thunderstorms | 1 to 5 mph ESE | 36% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alton, UT
Last spring frost
Jun 1
First fall frost
Sep 30
Growing season
120 days
Hardiness zone
6a
Explore more for Alton, UT: full frost dates · planting calendar · Utah frost dates
Climate data from the nearest NOAA station, Alton, Ut (2.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.