Big Falls, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Falls, a city in Koochiching County, Minnesota.
Tonight
45°F
Light Rain Likely
Rain likely. Cloudy, with a low around 45. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Big Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Light Rain Likely | 5 to 10 mph N | 71% |
| Wednesday | 48°F | Rain | 10 to 15 mph N | 84% |
| Wednesday Night | 33°F | Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 53% |
| Thursday | 41°F | Partly Sunny | 5 to 10 mph N | 1% |
| Thursday Night | 20°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Friday | 43°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Friday Night | 23°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Saturday | 50°F | Mostly Sunny | 5 to 10 mph SW | 5% |
| Saturday Night | 31°F | Partly Cloudy | 5 mph W | 11% |
| Sunday | 51°F | Mostly Sunny | 5 mph W | 8% |
| Sunday Night | 31°F | Mostly Cloudy | 5 mph SW | 2% |
| Monday | 53°F | Partly Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 31°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Tuesday | 48°F | Mostly Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Big Falls (48.180, -93.809). Updated through the day.
Growing snapshot for Big Falls
Last spring frost
May 24
First fall frost
Sep 20
Growing season
117 days
Hardiness zone
3b
More local growing data for Big Falls: nearby ZIP 56658 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Big Falls, Mn (8.5 mi from Big Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.