Alton, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alton, a town in Kane County, Utah.
Tonight
42°F
Mostly Clear
Mostly clear. Low around 42, with temperatures rising to around 44 overnight. Wind around 0 mph.
7-day forecast for Alton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Mostly Clear | 0 mph | 5% |
| Saturday | 72°F | Sunny | 0 to 8 mph WSW | 1% |
| Saturday Night | 39°F | Mostly Clear | 1 to 6 mph NW | 0% |
| Sunday | 73°F | Sunny | 5 mph WNW | 0% |
| Sunday Night | 43°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
| Monday | 72°F | Mostly Sunny | 1 to 6 mph E | 4% |
| Monday Night | 42°F | Chance Showers And Thunderstorms | 0 to 3 mph ENE | 51% |
| Tuesday | 68°F | Showers And Thunderstorms Likely | 0 to 6 mph E | 61% |
| Tuesday Night | 40°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph N | 22% |
| Wednesday | 70°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph E | 18% |
| Wednesday Night | 42°F | Mostly Clear | 2 mph NE | 9% |
| Thursday | 71°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph E | 23% |
| Thursday Night | 44°F | Slight Chance Showers And Thunderstorms | 0 to 3 mph NE | 20% |
| Friday | 70°F | Chance Showers And Thunderstorms | 5 mph ESE | 36% |
Forecast source: National Weather Service (api.weather.gov) for Alton (37.427, -112.510). Updated through the day.
Growing snapshot for Alton
Last spring frost
Jun 1
First fall frost
Sep 30
Growing season
120 days
Hardiness zone
6a
More local growing data for Alton: nearby ZIP 84710 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Alton, Ut (2.5 mi from Alton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.