Oronoco, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oronoco, a city in Olmsted County, Minnesota.
Today
76°F
Mostly Cloudy then Isolated Rain Showers
Isolated rain showers after 4pm. Mostly cloudy. High near 76, with temperatures falling to around 73 in the afternoon. Northwest wind around 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Oronoco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Cloudy then Isolated Rain Showers | 9 mph NW | 20% |
| Tonight | 55°F | Isolated Rain Showers then Mostly Cloudy | 2 to 8 mph W | 23% |
| Wednesday | 77°F | Sunny | 1 to 6 mph NW | 1% |
| Wednesday Night | 55°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 81°F | Sunny | 3 to 9 mph SW | 0% |
| Thursday Night | 61°F | Mostly Clear | 8 mph S | 2% |
| Friday | 84°F | Sunny | 7 to 13 mph SW | 13% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 7 to 12 mph SW | 15% |
| Saturday | 84°F | Sunny | 6 to 10 mph S | 11% |
| Saturday Night | 66°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 42% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 42% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph NE | 35% |
| Monday | 83°F | Chance Showers And Thunderstorms | 8 mph E | 35% |
| Monday Night | 64°F | Slight Chance Showers And Thunderstorms | 8 mph N | 23% |
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 Aug 4, 2026.