Granite Falls, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granite Falls, a city in Yellow Medicine County, Minnesota.
Tonight
42°F
Rain
Rain and patchy fog. Cloudy, with a low around 42. North northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Granite Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Rain | 15 mph NNW | 100% |
| Wednesday | 48°F | Light Rain | 15 mph NW | 94% |
| Wednesday Night | 38°F | Rain | 15 mph NW | 91% |
| Thursday | 46°F | Mostly Cloudy | 10 to 15 mph NNW | 14% |
| Thursday Night | 32°F | Mostly Cloudy | 0 to 10 mph N | 0% |
| Friday | 45°F | Partly Sunny | 0 mph | 0% |
| Friday Night | 30°F | Mostly Cloudy | 0 mph | 1% |
| Saturday | 56°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph W | 4% |
| Sunday | 57°F | Mostly Sunny | 5 mph WSW | 4% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SSW | 1% |
| Monday | 60°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 55°F | Mostly Sunny | 5 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Granite Falls (44.807, -95.542). Updated through the day.
Growing snapshot for Granite Falls
Last spring frost
May 4
First fall frost
Oct 1
Growing season
150 days
Hardiness zone
4b
More local growing data for Granite Falls: nearby ZIP 56241 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Granite Falls, Mn (1.5 mi from Granite Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.