Ashton, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ashton, a city in Fremont County, Idaho.
Tonight
29°F
Mostly Cloudy
Mostly cloudy. Low around 29, with temperatures rising to around 32 overnight. East northeast wind around 6 mph.
7-day forecast for Ashton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Mostly Cloudy | 6 mph ENE | 0% |
| Wednesday | 51°F | Partly Sunny | 1 to 6 mph S | 0% |
| Wednesday Night | 27°F | Mostly Clear then Patchy Fog | 3 mph E | 0% |
| Thursday | 46°F | Patchy Fog then Slight Chance Light Rain | 2 to 6 mph S | 24% |
| Thursday Night | 30°F | Slight Chance Light Rain then Areas Of Fog | 2 mph S | 24% |
| Friday | 44°F | Partly Sunny | 2 to 6 mph SSW | 4% |
| Friday Night | 28°F | Partly Cloudy | 3 mph ESE | 4% |
| Saturday | 49°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Saturday Night | 29°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Sunday | 54°F | Mostly Sunny | 1 to 5 mph SSW | 0% |
| Sunday Night | 32°F | Partly Cloudy | 3 mph E | 0% |
| Monday | 55°F | Mostly Sunny | 0 to 3 mph SSE | 2% |
| Monday Night | 33°F | Mostly Cloudy | 0 to 3 mph ESE | 2% |
| Tuesday | 54°F | Mostly Sunny | 3 mph SSW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Ashton (44.073, -111.448). Updated through the day.
Growing snapshot for Ashton
Last spring frost
May 21
First fall frost
Sep 21
Growing season
121 days
Hardiness zone
5a
More local growing data for Ashton: nearby ZIP 83421 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ashton 1N, Id (6.6 mi from Ashton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.