Oronoco, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oronoco, a city in Olmsted County, Minnesota.
Overnight
50°F
Rain Showers Likely
Rain showers likely. Mostly cloudy. Low around 50, with temperatures rising to around 53 overnight. West wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Oronoco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Rain Showers Likely | 6 mph W | 61% |
| Wednesday | 54°F | Rain Showers | 7 to 13 mph W | 86% |
| Wednesday Night | 44°F | Rain Showers | 9 to 13 mph W | 96% |
| Thursday | 49°F | Chance Rain Showers then Cloudy | 14 mph N | 46% |
| Thursday Night | 34°F | Mostly Cloudy | 5 to 10 mph N | 2% |
| Friday | 46°F | Mostly Sunny | 6 mph N | 0% |
| Friday Night | 27°F | Mostly Clear | 2 mph NW | 0% |
| Saturday | 49°F | Sunny | 1 to 7 mph SW | 1% |
| Saturday Night | 35°F | Mostly Clear | 7 mph W | 2% |
| Sunday | 54°F | Sunny | 8 mph W | 4% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 60°F | Mostly Sunny | 6 to 10 mph SW | 1% |
| Monday Night | 39°F | Mostly Clear | 3 to 7 mph W | 0% |
| Tuesday | 57°F | Sunny | 6 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Oronoco (44.158, -92.539). Updated through the day.
Growing snapshot for Oronoco
Last spring frost
May 12
First fall frost
Sep 28
Growing season
139 days
Hardiness zone
4b
More local growing data for Oronoco: nearby ZIP 55960 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Byron 4North, Mn (6.2 mi from Oronoco). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.