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
Rain
Rain. Cloudy, with a low around 50. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Cromwell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Rain | 10 mph N | 87% |
| Wednesday | 51°F | Rain | 10 mph N | 90% |
| Wednesday Night | 39°F | Light Rain | 10 to 15 mph N | 88% |
| Thursday | 43°F | Slight Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 17% |
| Thursday Night | 27°F | Mostly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 42°F | Mostly Sunny | 0 mph | 0% |
| Friday Night | 24°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 48°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph W | 12% |
| Sunday | 52°F | Mostly Sunny | 5 to 10 mph W | 8% |
| Sunday Night | 32°F | Partly Cloudy | 5 mph SW | 1% |
| Monday | 53°F | Mostly Sunny | 5 to 10 mph SW | 3% |
| Monday Night | 34°F | Partly Cloudy | 5 to 10 mph W | 0% |
| Tuesday | 49°F | Mostly Sunny | 5 mph W | 1% |
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 Nov 4, 2026.