Herman, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Herman, a city in Grant County, Minnesota.
Tonight
55°F
Slight Chance Rain Showers then Cloudy
A slight chance of rain showers before 10pm. Cloudy. Low around 55, with temperatures rising to around 57 overnight. East wind 8 to 15 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Herman
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Slight Chance Rain Showers then Cloudy | 8 to 15 mph E | 23% |
| Saturday | 67°F | Mostly Cloudy | 10 mph NE | 4% |
| Saturday Night | 53°F | Mostly Cloudy | 8 mph NE | 0% |
| Sunday | 68°F | Mostly Cloudy | 8 to 12 mph ENE | 1% |
| Sunday Night | 48°F | Mostly Cloudy | 9 mph E | 7% |
| Monday | 65°F | Mostly Cloudy | 8 mph E | 7% |
| Monday Night | 45°F | Partly Cloudy | 6 mph ESE | 2% |
| Tuesday | 67°F | Mostly Sunny | 6 to 10 mph SE | 1% |
| Tuesday Night | 46°F | Mostly Clear | 8 mph SE | 1% |
| Wednesday | 68°F | Mostly Sunny | 9 to 14 mph SSE | 9% |
| Wednesday Night | 51°F | Slight Chance Rain Showers | 9 mph SSE | 21% |
| Thursday | 71°F | Slight Chance Rain Showers then Partly Sunny | 9 mph SSE | 21% |
| Thursday Night | 52°F | Partly Cloudy | 6 mph SE | 8% |
| Friday | 72°F | Mostly Sunny | 7 to 13 mph SSE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Herman (45.811, -96.141). Updated through the day.
Growing snapshot for Herman
Last spring frost
May 1
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
4b
More local growing data for Herman: nearby ZIP 56248 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Wheaton, Mn (17.8 mi from Herman). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.