Harmony, MN Weather & Growing Conditions
Tonight
59°F
Showers And Thunderstorms
Showers and thunderstorms before 10pm, then showers and thunderstorms likely between 10pm and midnight, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 59. East wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Showers And Thunderstorms | 10 to 16 mph E | 84% |
| Saturday | 69°F | Showers And Thunderstorms | 9 mph E | 76% |
| Saturday Night | 56°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 53% |
| Sunday | 64°F | Slight Chance Rain Showers then Mostly Cloudy | 14 mph NE | 15% |
| Sunday Night | 51°F | Mostly Cloudy | 13 mph NE | 9% |
| Monday | 60°F | Chance Rain Showers | 13 mph NE | 39% |
| Monday Night | 45°F | Chance Rain Showers | 9 mph NE | 39% |
| Tuesday | 59°F | Slight Chance Rain Showers then Partly Sunny | 9 mph NE | 17% |
| Tuesday Night | 44°F | Partly Cloudy | 5 mph E | 4% |
| Wednesday | 63°F | Sunny | 5 mph E | 0% |
| Wednesday Night | 48°F | Partly Cloudy | 3 mph SE | 4% |
| Thursday | 66°F | Mostly Sunny | 5 mph SE | 12% |
| Thursday Night | 51°F | Partly Cloudy | 3 mph S | 8% |
| Friday | 67°F | Mostly Sunny | 2 to 6 mph SE | 6% |
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 Sep 19, 2026.