Ashton, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ashton, a city in Fremont County, Idaho.
Today
62°F
Light Rain Likely then Chance Showers And Thunderstorms
Rain likely before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 62. South wind 2 to 6 mph. Chance of precipitation is 60%.
7-day forecast for Ashton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Light Rain Likely then Chance Showers And Thunderstorms | 2 to 6 mph S | 61% |
| Tonight | 39°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 5 mph ENE | 18% |
| Sunday | 65°F | Mostly Sunny | 3 mph S | 7% |
| Sunday Night | 39°F | Mostly Clear | 5 mph ESE | 0% |
| Monday | 72°F | Sunny | 1 to 6 mph SSW | 0% |
| Monday Night | 40°F | Mostly Clear | 1 to 6 mph ENE | 0% |
| Tuesday | 74°F | Mostly Sunny | 1 to 7 mph SSE | 0% |
| Tuesday Night | 43°F | Partly Cloudy | 5 mph ENE | 12% |
| Wednesday | 74°F | Sunny | 7 mph SW | 9% |
| Wednesday Night | 43°F | Mostly Clear | 6 mph E | 3% |
| Thursday | 76°F | Sunny | 2 to 6 mph SE | 2% |
| Thursday Night | 45°F | Mostly Clear | 6 mph E | 0% |
| Friday | 77°F | Mostly Sunny | 6 mph SE | 3% |
| Friday Night | 45°F | Partly Cloudy | 5 mph SE | 9% |
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 Sep 19, 2026.