Ortonville, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ortonville, a city in Big Stone County, Minnesota.
This Afternoon
62°F
Widespread Drizzle
Widespread drizzle and patchy fog. Cloudy, with a high near 62. East southeast wind around 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Ortonville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Widespread Drizzle | 13 mph ESE | 62% |
| Tonight | 55°F | Areas Of Drizzle | 6 to 12 mph ENE | 52% |
| Saturday | 64°F | Patchy Fog | 6 to 10 mph NNE | 12% |
| Saturday Night | 53°F | Mostly Cloudy | 5 to 8 mph NNE | 3% |
| Sunday | 66°F | Mostly Cloudy | 6 to 12 mph ENE | 5% |
| Sunday Night | 50°F | Cloudy then Slight Chance Rain Showers | 5 to 8 mph ENE | 20% |
| Monday | 63°F | Slight Chance Rain Showers | 7 mph E | 20% |
| Monday Night | 46°F | Mostly Cloudy | 2 to 6 mph ESE | 3% |
| Tuesday | 64°F | Mostly Sunny | 2 to 10 mph SE | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 8 mph SE | 2% |
| Wednesday | 66°F | Mostly Sunny | 6 to 13 mph SE | 9% |
| Wednesday Night | 51°F | Mostly Cloudy then Chance Rain Showers | 6 to 9 mph SE | 30% |
| Thursday | 70°F | Chance Rain Showers then Partly Sunny | 6 to 9 mph SSE | 30% |
| Thursday Night | 53°F | Partly Cloudy | 7 mph SE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Ortonville (45.302, -96.442). Updated through the day.
Growing snapshot for Ortonville
Last spring frost
May 1
First fall frost
Oct 8
Growing season
159 days
Hardiness zone
4b
More local growing data for Ortonville: nearby ZIP 56278 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Artichoke Lake 1 E, Mn (12.6 mi from Ortonville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.