West Union, MN Weather & Growing Conditions
Overnight
53°F
Slight Chance Rain Showers
A slight chance of rain showers before 1am, then a slight chance of drizzle between 1am and 3am. Cloudy. Low around 53, with temperatures rising to around 56 overnight. East wind around 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Slight Chance Rain Showers | 10 mph E | 21% |
| Saturday | 65°F | Cloudy | 10 mph NE | 9% |
| Saturday Night | 51°F | Partly Cloudy | 5 to 10 mph NE | 2% |
| Sunday | 67°F | Mostly Cloudy | 10 to 15 mph NE | 0% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph ENE | 4% |
| Monday | 63°F | Mostly Cloudy | 5 to 10 mph E | 4% |
| Monday Night | 42°F | Partly Cloudy | 5 mph E | 2% |
| Tuesday | 65°F | Mostly Sunny | 5 to 10 mph ESE | 0% |
| Tuesday Night | 44°F | Mostly Clear | 5 mph SE | 1% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph SSE | 3% |
| Wednesday Night | 48°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SSE | 18% |
| Thursday | 69°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph SSE | 18% |
| Thursday Night | 51°F | Partly Cloudy | 5 mph SSE | 7% |
| Friday | 71°F | Mostly Sunny | 5 to 10 mph SSE | 9% |
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 Sep 19, 2026.