Cromwell, MN Weather & Growing Conditions
Overnight
49°F
Light Rain
Rain before 2am, then rain and patchy fog. Cloudy, with a low around 49. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Light Rain | 10 mph NE | 82% |
| Wednesday | 52°F | Light Rain | 10 mph N | 90% |
| Wednesday Night | 38°F | Light Rain | 10 to 15 mph N | 93% |
| Thursday | 42°F | Mostly Cloudy | 10 to 15 mph N | 11% |
| Thursday Night | 24°F | Mostly Cloudy | 0 to 5 mph NE | 1% |
| Friday | 41°F | Sunny | 0 mph | 0% |
| Friday Night | 22°F | Mostly Clear | 0 mph | 0% |
| Saturday | 46°F | Mostly Sunny | 0 to 5 mph SW | 4% |
| Saturday Night | 31°F | Partly Cloudy | 5 mph W | 7% |
| Sunday | 50°F | Mostly Sunny | 5 to 10 mph W | 3% |
| Sunday Night | 31°F | Mostly Cloudy | 0 to 5 mph SW | 0% |
| Monday | 54°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 32°F | Partly Cloudy | 5 mph W | 1% |
| Tuesday | 50°F | Mostly Sunny | 0 to 5 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cromwell, MN
Last spring frost
May 31
First fall frost
Sep 18
Growing season
107 days
Hardiness zone
4a
Explore more for Cromwell, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Wright 3 E, Mn (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.