Harmony, MN Weather & Growing Conditions
Tonight
51°F
Showers And Thunderstorms
Rain showers before 9pm, then showers and thunderstorms. Cloudy. Low around 51, with temperatures rising to around 54 overnight. Southeast wind 7 to 14 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Showers And Thunderstorms | 7 to 14 mph SE | 88% |
| Wednesday | 53°F | Rain Showers Likely | 10 to 15 mph SW | 72% |
| Wednesday Night | 45°F | Rain Showers | 16 mph W | 80% |
| Thursday | 49°F | Rain Showers Likely | 15 mph NW | 74% |
| Thursday Night | 37°F | Mostly Cloudy | 10 to 14 mph N | 9% |
| Friday | 46°F | Partly Sunny | 5 to 10 mph N | 1% |
| Friday Night | 30°F | Partly Cloudy | 2 mph NW | 0% |
| Saturday | 51°F | Mostly Sunny | 2 to 6 mph SW | 0% |
| Saturday Night | 36°F | Partly Cloudy | 5 to 8 mph W | 6% |
| Sunday | 56°F | Mostly Sunny | 9 mph W | 11% |
| Sunday Night | 37°F | Mostly Clear | 6 to 9 mph SW | 3% |
| Monday | 58°F | Mostly Sunny | 9 to 14 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 9 mph W | 1% |
| Tuesday | 56°F | Mostly Sunny | 8 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harmony, MN
Last spring frost
May 14
First fall frost
Sep 28
Growing season
136 days
Hardiness zone
4b
Explore more for Harmony, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Preston, Mn (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.