Barnum, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Barnum, a city in Carlton County, Minnesota.
Tonight
50°F
Chance Rain Showers
A chance of drizzle before 10pm, then a chance of rain showers between 10pm and 11pm, then a chance of rain showers and patchy fog between 11pm and 3am, then a chance of drizzle and patchy fog between 3am and 4am, then patchy fog and a slight chance of drizzle. Cloudy, with a low around 50. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Barnum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Chance Rain Showers | 5 mph E | 44% |
| Saturday | 62°F | Patchy Fog then Mostly Cloudy | 5 mph NE | 19% |
| Saturday Night | 47°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Sunday | 61°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Sunday Night | 41°F | Mostly Cloudy | 5 to 10 mph E | 0% |
| Monday | 61°F | Partly Sunny | 5 to 10 mph E | 0% |
| Monday Night | 38°F | Partly Cloudy | 0 to 10 mph E | 0% |
| Tuesday | 63°F | Sunny | 0 to 5 mph E | 1% |
| Tuesday Night | 39°F | Mostly Clear | 0 to 5 mph E | 0% |
| Wednesday | 65°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 43°F | Partly Cloudy | 0 to 5 mph SE | 10% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph S | 10% |
| Thursday Night | 45°F | Partly Cloudy | 0 mph | 5% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph E | 5% |
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 Sep 19, 2026.