Iona, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Iona, a city in Murray County, Minnesota.
Overnight
58°F
Patchy Smoke
Patchy smoke and a slight chance of rain showers. Cloudy, with a low around 58. North northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Iona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Patchy Smoke | 15 mph NNW | 20% |
| Tuesday | 69°F | Patchy Smoke then Slight Chance Rain Showers | 5 to 10 mph NNW | 19% |
| Tuesday Night | 51°F | Partly Cloudy | 0 to 5 mph WNW | 4% |
| Wednesday | 74°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 55°F | Mostly Clear | 5 to 10 mph SSW | 0% |
| Thursday | 80°F | Sunny | 10 to 15 mph SSW | 0% |
| Thursday Night | 61°F | Mostly Clear | 10 to 15 mph SSW | 3% |
| Friday | 84°F | Sunny | 10 to 15 mph SW | 8% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 15% |
| Saturday | 85°F | Sunny | 5 to 15 mph SSW | 10% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 10 to 15 mph SE | 26% |
| Sunday | 82°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph ESE | 22% |
| Sunday Night | 64°F | Partly Cloudy then Chance Showers And Thunderstorms | 10 to 15 mph E | 30% |
| Monday | 81°F | Chance Showers And Thunderstorms then Partly Sunny | 10 to 15 mph ENE | 30% |
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 Aug 4, 2026.