St. Rosa, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Rosa, a city in Stearns County, Minnesota.
This Afternoon
53°F
Light Rain
Rain and patchy fog. Cloudy. High near 53, with temperatures falling to around 50 in the afternoon. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for St. Rosa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Light Rain | 15 mph N | 95% |
| Tonight | 44°F | Rain | 15 mph N | 100% |
| Wednesday | 49°F | Rain | 15 mph N | 96% |
| Wednesday Night | 38°F | Light Rain | 15 to 20 mph NNW | 85% |
| Thursday | 44°F | Mostly Cloudy | 10 to 15 mph N | 8% |
| Thursday Night | 30°F | Mostly Cloudy | 0 to 10 mph NNE | 0% |
| Friday | 41°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 50°F | Mostly Sunny | 0 to 10 mph SW | 3% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 9% |
| Sunday | 52°F | Mostly Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph SSW | 0% |
| Monday | 55°F | Mostly Sunny | 5 to 15 mph WSW | 1% |
| Monday Night | 35°F | Mostly Clear | 5 to 10 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for St. Rosa (45.727, -94.714). Updated through the day.
Growing snapshot for St. Rosa
Last spring frost
May 4
First fall frost
Oct 1
Growing season
148 days
Hardiness zone
4b
More local growing data for St. Rosa: nearby ZIP 56331 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, Melrose, Mn (6.3 mi from St. Rosa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.