Iona, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Iona, a city in Murray County, Minnesota.
This Afternoon
64°F
Patchy Fog
Patchy fog before 4pm, then patchy fog and a slight chance of showers and thunderstorms. Cloudy, with a high near 64. East southeast wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Iona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Patchy Fog | 10 mph ESE | 18% |
| Tonight | 57°F | Areas Of Fog | 5 to 10 mph NE | 22% |
| Saturday | 64°F | Areas Of Fog | 10 to 15 mph NNE | 19% |
| Saturday Night | 52°F | Mostly Cloudy | 10 to 15 mph NNE | 9% |
| Sunday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 17% |
| Sunday Night | 50°F | Chance Rain Showers | 10 to 15 mph ENE | 42% |
| Monday | 59°F | Chance Rain Showers | 10 mph ENE | 45% |
| Monday Night | 45°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 38% |
| Tuesday | 62°F | Partly Sunny | 5 to 10 mph E | 7% |
| Tuesday Night | 45°F | Partly Cloudy | 5 mph SE | 0% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph SSE | 6% |
| Wednesday Night | 49°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SSE | 23% |
| Thursday | 69°F | Slight Chance Rain Showers | 5 to 10 mph S | 23% |
| Thursday Night | 52°F | Partly Cloudy | 5 mph SSE | 11% |
Forecast source: National Weather Service (api.weather.gov) for Iona (43.916, -95.783). Updated through the day.
Growing snapshot for Iona
Last spring frost
May 7
First fall frost
Sep 29
Growing season
145 days
Hardiness zone
5a
More local growing data for Iona: nearby ZIP 56141 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lake Wilson, Mn (10.6 mi from Iona). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.