West Union, MN Weather & Growing Conditions
Overnight
44°F
Light Rain
Rain and patchy fog. Cloudy, with a low around 44. North northwest wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Light Rain | 15 to 20 mph NNW | 89% |
| Wednesday | 48°F | Light Rain | 15 to 20 mph NNW | 91% |
| Wednesday Night | 37°F | Drizzle Likely then Mostly Cloudy | 15 to 20 mph NNW | 68% |
| Thursday | 41°F | Mostly Cloudy | 10 to 15 mph N | 0% |
| Thursday Night | 27°F | Partly Cloudy | 0 to 10 mph NE | 0% |
| Friday | 40°F | Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 27°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Saturday | 47°F | Mostly Sunny | 5 to 10 mph SW | 2% |
| Saturday Night | 34°F | Mostly Clear | 5 to 10 mph W | 2% |
| Sunday | 50°F | Sunny | 5 to 10 mph WSW | 0% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SSW | 0% |
| Monday | 55°F | Mostly Sunny | 5 to 15 mph WSW | 0% |
| Monday Night | 35°F | Mostly Clear | 5 to 10 mph WNW | 0% |
| Tuesday | 50°F | Mostly Sunny | 5 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for West Union, MN
Last spring frost
May 13
First fall frost
Sep 27
Growing season
134 days
Hardiness zone
4b
Explore more for West Union, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Long Prairie, Mn (14.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.