Harbor Beach, MI Weather & Growing Conditions
Overnight
50°F
Mostly Cloudy
Mostly cloudy. Low around 50, with temperatures rising to around 52 overnight. East wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 5 mph E | 13% |
| Saturday | 66°F | Chance Rain Showers | 5 to 10 mph ESE | 43% |
| Saturday Night | 52°F | Chance Rain Showers | 5 to 10 mph E | 50% |
| Sunday | 66°F | Mostly Cloudy | 6 to 16 mph NE | 10% |
| Sunday Night | 50°F | Mostly Cloudy | 12 to 16 mph NE | 2% |
| Monday | 62°F | Mostly Cloudy | 16 mph NE | 1% |
| Monday Night | 48°F | Mostly Cloudy | 10 to 17 mph ENE | 3% |
| Tuesday | 63°F | Partly Sunny | 13 to 17 mph ENE | 8% |
| Tuesday Night | 48°F | Mostly Cloudy then Chance Rain Showers | 12 to 18 mph ENE | 35% |
| Wednesday | 64°F | Chance Rain Showers | 15 mph E | 44% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 7 to 14 mph E | 37% |
| Thursday | 66°F | Slight Chance Rain Showers | 7 to 10 mph ENE | 18% |
| Thursday Night | 50°F | Mostly Cloudy | 5 to 9 mph NE | 13% |
| Friday | 67°F | Mostly Sunny | 5 to 10 mph NNE | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harbor Beach, MI
Last spring frost
May 2
First fall frost
Oct 24
Growing season
173 days
Hardiness zone
6a
Explore more for Harbor Beach, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Harbor Beach 1 Sse, Mi (4.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.