Ashton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ashton, a city in Osceola County, Iowa.
Tonight
39°F
Rain Showers
Rain showers. Cloudy. Low around 39, with temperatures rising to around 42 overnight. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Ashton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Rain Showers | 15 to 20 mph NW | 95% |
| Wednesday | 46°F | Rain Showers | 15 mph NW | 91% |
| Wednesday Night | 37°F | Rain Showers Likely | 10 to 15 mph NW | 63% |
| Thursday | 46°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NNW | 27% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 10 mph N | 4% |
| Friday | 47°F | Partly Sunny | 0 to 5 mph E | 0% |
| Friday Night | 30°F | Mostly Cloudy | 0 mph | 1% |
| Saturday | 54°F | Mostly Sunny | 0 to 10 mph WSW | 1% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 57°F | Sunny | 5 to 10 mph WSW | 3% |
| Sunday Night | 37°F | Mostly Clear | 5 to 10 mph SSW | 1% |
| Monday | 60°F | Sunny | 10 mph WSW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Ashton (43.309, -95.791). Updated through the day.
Growing snapshot for Ashton
Last spring frost
May 5
First fall frost
Oct 3
Growing season
152 days
Hardiness zone
5a
More local growing data for Ashton: nearby ZIP 51232 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Sibley, Ia (8.2 mi from Ashton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.