Big Falls, MN Weather & Growing Conditions
Tonight
45°F
Slight Chance Rain Showers then Partly Cloudy
A slight chance of rain showers before 11pm. Partly cloudy. Low around 45, with temperatures rising to around 47 overnight. North wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 20% |
| Sunday | 61°F | Partly Sunny | 5 mph NE | 0% |
| Sunday Night | 36°F | Mostly Cloudy | 0 to 5 mph E | 0% |
| Monday | 63°F | Patchy Frost then Sunny | 0 to 5 mph SE | 0% |
| Monday Night | 35°F | Mostly Clear then Patchy Frost | 0 mph | 0% |
| Tuesday | 64°F | Areas Of Frost then Sunny | 0 to 5 mph SE | 0% |
| Tuesday Night | 36°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 65°F | Sunny | 5 to 10 mph SE | 0% |
| Wednesday Night | 42°F | Partly Cloudy | 5 mph SE | 3% |
| Thursday | 66°F | Chance Rain Showers | 5 to 10 mph S | 27% |
| Thursday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 5 mph S | 27% |
| Friday | 71°F | Partly Sunny | 5 mph S | 4% |
| Friday Night | 52°F | Mostly Cloudy | 5 mph S | 8% |
| Saturday | 69°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph S | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Big Falls, MN
Last spring frost
May 23
First fall frost
Sep 21
Growing season
118 days
Hardiness zone
3a
Explore more for Big Falls, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Littlefork 10 Sw, Mn (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.