Copper Harbor, MI Weather & Growing Conditions
Today
60°F
Rain Showers
Rain showers and areas of fog before 1pm, then areas of fog and a chance of rain showers between 1pm and 2pm, then a chance of rain showers and patchy fog. Mostly cloudy. High near 60, with temperatures falling to around 56 in the afternoon. Southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Rain Showers | 10 mph SE | 84% |
| Tonight | 39°F | Rain Showers Likely | 5 to 15 mph SW | 71% |
| Thursday | 44°F | Rain Showers | 20 to 30 mph N | 90% |
| Thursday Night | 30°F | Rain Showers Likely then Slight Chance Rain And Snow Showers | 15 to 25 mph N | 70% |
| Friday | 42°F | Slight Chance Snow Showers then Partly Sunny | 5 to 15 mph NE | 18% |
| Friday Night | 30°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 43°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 5 to 10 mph W | 10% |
| Sunday | 45°F | Partly Sunny | 10 to 15 mph W | 14% |
| Sunday Night | 34°F | Mostly Cloudy | 5 to 10 mph W | 14% |
| Monday | 49°F | Partly Sunny | 5 to 10 mph SW | 9% |
| Monday Night | 35°F | Slight Chance Rain Showers | 10 to 15 mph W | 15% |
| Tuesday | 45°F | Partly Sunny | 10 to 15 mph NW | 14% |
| Tuesday Night | 33°F | Mostly Cloudy | 5 to 10 mph NW | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Copper Harbor, MI
Last spring frost
May 20
First fall frost
Oct 15
Growing season
148 days
Hardiness zone
6a
Explore more for Copper Harbor, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Copper Harbor Ft Wilkins, Mi (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.