Big Falls, MN Weather & Growing Conditions
Today
69°F
Mostly Sunny
Mostly sunny. High near 69, with temperatures falling to around 67 in the afternoon. West wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Mostly Sunny | 5 to 10 mph W | 0% |
| Tonight | 47°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 5 mph SW | 5% |
| Thursday | 80°F | Sunny | 5 to 10 mph SW | 5% |
| Thursday Night | 57°F | Mostly Clear | 5 to 10 mph SW | 10% |
| Friday | 79°F | Sunny | 5 to 10 mph W | 11% |
| Friday Night | 52°F | Mostly Clear then Slight Chance Rain Showers | 0 to 5 mph W | 21% |
| Saturday | 75°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph W | 21% |
| Saturday Night | 52°F | Slight Chance Rain Showers | 0 to 5 mph NW | 18% |
| Sunday | 75°F | Mostly Sunny | 0 to 5 mph NW | 12% |
| Sunday Night | 53°F | Partly Cloudy then Slight Chance Rain Showers | 0 to 5 mph NW | 15% |
| Monday | 75°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NW | 15% |
| Monday Night | 53°F | Partly Cloudy | 0 to 5 mph N | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Big Falls, MN
Last spring frost
May 24
First fall frost
Sep 20
Growing season
117 days
Hardiness zone
3b
Explore more for Big Falls, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Big Falls, Mn (8.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.