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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

WhenTempForecastWindPrecip
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

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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.