Walnut Grove, MN Weather & Growing Conditions
Tonight
42°F
Light Rain
Rain and patchy fog. Cloudy, with a low around 42. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Light Rain | 15 to 20 mph NW | 75% |
| Wednesday | 45°F | Light Rain | 20 mph NW | 94% |
| Wednesday Night | 37°F | Light Rain | 15 to 20 mph NW | 86% |
| Thursday | 44°F | Slight Chance Light Rain | 15 mph NNW | 24% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 10 mph N | 13% |
| Friday | 45°F | Partly Sunny | 0 to 5 mph E | 0% |
| Friday Night | 30°F | Mostly Cloudy | 0 to 5 mph S | 1% |
| Saturday | 55°F | Mostly Sunny | 5 to 10 mph WSW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 10 mph W | 4% |
| Sunday | 57°F | Sunny | 10 mph WSW | 4% |
| Sunday Night | 38°F | Mostly Clear | 5 to 10 mph SW | 1% |
| Monday | 60°F | Mostly Sunny | 10 to 15 mph W | 0% |
| Monday Night | 37°F | Mostly Clear | 5 to 10 mph W | 0% |
| Tuesday | 55°F | Mostly Sunny | 5 to 10 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Walnut Grove, MN
Last spring frost
May 3
First fall frost
Oct 2
Growing season
152 days
Hardiness zone
5a
Explore more for Walnut Grove, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Lamberton Sw Rsch & Outreach C, Mn (7.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.