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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

WhenTempForecastWindPrecip
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.