Ortonville, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ortonville, a city in Big Stone County, Minnesota.
Today
45°F
Light Rain
Rain and patchy fog. Cloudy, with a high near 45. North northwest wind around 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 Ortonville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 45°F | Light Rain | 20 mph NNW | 97% |
| Tonight | 35°F | Chance Light Rain then Mostly Cloudy | 14 to 18 mph NNW | 36% |
| Thursday | 41°F | Mostly Cloudy | 10 to 16 mph NNW | 0% |
| Thursday Night | 29°F | Mostly Cloudy | 1 to 9 mph N | 0% |
| Friday | 42°F | Mostly Sunny | 1 to 5 mph ESE | 1% |
| Friday Night | 29°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 53°F | Mostly Sunny | 3 to 8 mph SW | 1% |
| Saturday Night | 37°F | Mostly Clear | 7 mph W | 0% |
| Sunday | 55°F | Sunny | 7 mph WSW | 0% |
| Sunday Night | 38°F | Mostly Clear | 5 mph SSW | 0% |
| Monday | 59°F | Mostly Sunny | 5 to 10 mph W | 0% |
| Monday Night | 37°F | Mostly Clear | 3 to 7 mph WNW | 0% |
| Tuesday | 54°F | Mostly Sunny | 6 mph W | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 3 mph SSE | 2% |
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 Nov 4, 2026.