Cromwell, MN Weather & Growing Conditions
Overnight
51°F
Slight Chance Rain Showers
A slight chance of rain showers before 3am, then patchy fog and a slight chance of rain showers. Cloudy, with a low around 51. East wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Slight Chance Rain Showers | 5 mph E | 23% |
| Saturday | 63°F | Patchy Fog then Cloudy | 5 mph E | 11% |
| Saturday Night | 48°F | Mostly Cloudy | 0 to 5 mph NE | 2% |
| Sunday | 62°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Sunday Night | 41°F | Mostly Cloudy | 5 to 10 mph E | 0% |
| Monday | 60°F | Mostly Sunny | 5 to 10 mph E | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph E | 0% |
| Tuesday | 63°F | Sunny | 0 to 5 mph E | 0% |
| Tuesday Night | 38°F | Mostly Clear | 0 to 5 mph E | 0% |
| Wednesday | 64°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 41°F | Mostly Clear | 0 to 5 mph E | 4% |
| Thursday | 66°F | Mostly Sunny | 0 to 5 mph SE | 6% |
| Thursday Night | 45°F | Partly Cloudy | 0 to 5 mph SE | 6% |
| Friday | 69°F | Partly Sunny | 0 to 5 mph SE | 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 Sep 19, 2026.