Garretson, MN Weather & Growing Conditions
Tonight
39°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 39, with temperatures rising to around 42 overnight. North northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Rain Showers Likely | 15 mph NNW | 57% |
| Wednesday | 44°F | Rain Showers | 15 mph NW | 75% |
| Wednesday Night | 37°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NW | 49% |
| Thursday | 45°F | Mostly Cloudy | 10 to 15 mph N | 0% |
| Thursday Night | 30°F | Mostly Cloudy | 0 to 10 mph N | 0% |
| Friday | 44°F | Mostly Sunny | 0 mph | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 10 mph SSW | 1% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WNW | 5% |
| Sunday | 57°F | Sunny | 5 to 10 mph WSW | 3% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SSW | 1% |
| Monday | 59°F | Sunny | 5 to 10 mph W | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 56°F | Mostly Sunny | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Garretson, MN
Last spring frost
May 1
First fall frost
Oct 4
Growing season
155 days
Hardiness zone
5a
Explore more for Garretson, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Sioux Falls 14 Nne, Sd (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.