Cromwell, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cromwell, a city in Carlton County, Minnesota.
Tonight
50°F
Chance Drizzle
A slight chance of drizzle before midnight, then a chance of drizzle and patchy fog between midnight and 2am, then patchy fog and a slight chance of drizzle. Cloudy, with a low around 50. East wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Cromwell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Chance Drizzle | 5 mph E | 26% |
| Saturday | 64°F | Patchy Fog then Mostly Cloudy | 5 mph E | 8% |
| Saturday Night | 47°F | Mostly Cloudy | 0 to 5 mph NE | 0% |
| Sunday | 61°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| 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 | 38°F | Partly Cloudy | 5 mph E | 0% |
| Tuesday | 62°F | Sunny | 0 to 5 mph E | 0% |
| Tuesday Night | 39°F | Mostly Clear | 0 to 5 mph E | 0% |
| Wednesday | 64°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 43°F | Partly Cloudy | 0 to 5 mph SE | 10% |
| Thursday | 66°F | Mostly Sunny | 0 to 5 mph S | 10% |
| Thursday Night | 46°F | Partly Cloudy | 0 to 5 mph S | 5% |
| Friday | 69°F | Mostly Sunny | 0 to 5 mph E | 5% |
Forecast source: National Weather Service (api.weather.gov) for Cromwell (46.679, -92.871). Updated through the day.
Growing snapshot for Cromwell
Last spring frost
May 31
First fall frost
Sep 18
Growing season
107 days
Hardiness zone
4a
More local growing data for Cromwell: nearby ZIP 55726 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Barnum
Big Lake
Carlton
Cloquet
Esko
Kettle River
Mahnomen
Mahtowa
Moose Lake
Scanlon
Sturgeon Lake
Wrenshall
Wright
Climate data from the nearest NOAA station, Wright 3 E, Mn (6.4 mi from Cromwell). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.