Knife River, MN Weather & Growing Conditions
Overnight
52°F
Cloudy
Cloudy, with a low around 52. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Cloudy | 5 mph NE | 10% |
| Saturday | 62°F | Patchy Fog then Mostly Cloudy | 5 to 10 mph NE | 6% |
| Saturday Night | 52°F | Mostly Cloudy | 0 to 5 mph NE | 3% |
| Sunday | 59°F | Partly Sunny | 5 to 15 mph NE | 1% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph E | 0% |
| Monday | 57°F | Mostly Sunny | 5 to 15 mph E | 0% |
| Monday Night | 44°F | Mostly Clear | 5 to 10 mph E | 0% |
| Tuesday | 60°F | Sunny | 0 to 10 mph E | 0% |
| Tuesday Night | 44°F | Mostly Clear | 0 to 10 mph E | 0% |
| Wednesday | 62°F | Sunny | 0 to 10 mph E | 0% |
| Wednesday Night | 45°F | Mostly Clear | 0 to 10 mph E | 2% |
| Thursday | 64°F | Mostly Sunny | 0 to 5 mph E | 3% |
| Thursday Night | 48°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Friday | 67°F | Mostly Sunny | 0 to 5 mph E | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Knife River, MN
Last spring frost
May 12
First fall frost
Oct 6
Growing season
145 days
Hardiness zone
4b
Explore more for Knife River, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Two Harbors, Mn (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.