Barnum, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Barnum, a city in Carlton County, Minnesota.
Tonight
49°F
Rain
Rain. Cloudy. Low around 49, with temperatures rising to around 51 overnight. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Barnum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Rain | 10 mph NE | 83% |
| Wednesday | 52°F | Rain | 10 mph N | 84% |
| Wednesday Night | 39°F | Light Rain | 10 mph N | 85% |
| Thursday | 44°F | Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 26% |
| Thursday Night | 28°F | Mostly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 43°F | Mostly Sunny | 0 mph | 0% |
| Friday Night | 24°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 49°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph W | 11% |
| Sunday | 53°F | Mostly Sunny | 5 mph W | 8% |
| Sunday Night | 32°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Monday | 54°F | Mostly Sunny | 5 to 10 mph SW | 2% |
| Monday Night | 34°F | Partly Cloudy | 5 mph W | 1% |
| Tuesday | 50°F | Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Barnum (46.505, -92.688). Updated through the day.
Growing snapshot for Barnum
Last spring frost
May 12
First fall frost
Oct 2
Growing season
144 days
Hardiness zone
4a
More local growing data for Barnum: nearby ZIP 55707 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Big Lake
Carlton
Cloquet
Cromwell
Esko
Kettle River
Mahnomen
Mahtowa
Moose Lake
Scanlon
Sturgeon Lake
Wrenshall
Wright
Climate data from the nearest NOAA station, Moose Lake 1 Sse, Mn (9.8 mi from Barnum). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.