Alpena, MI Weather & Growing Conditions
Overnight
44°F
Partly Cloudy
Partly cloudy. Low around 44, with temperatures rising to around 48 overnight. East wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Partly Cloudy | 0 mph | 1% |
| Saturday | 65°F | Slight Chance Rain Showers | 0 to 10 mph SE | 20% |
| Saturday Night | 50°F | Chance Rain Showers | 0 to 10 mph E | 30% |
| Sunday | 65°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 20% |
| Sunday Night | 46°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Monday | 57°F | Mostly Cloudy | 10 mph NE | 0% |
| Monday Night | 46°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Tuesday | 60°F | Mostly Sunny | 10 to 15 mph E | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 10 mph E | 3% |
| Wednesday | 62°F | Mostly Sunny | 10 to 15 mph E | 11% |
| Wednesday Night | 48°F | Mostly Cloudy | 5 to 10 mph E | 12% |
| Thursday | 64°F | Partly Sunny | 5 to 10 mph E | 11% |
| Thursday Night | 48°F | Mostly Cloudy | 0 to 5 mph NE | 11% |
| Friday | 67°F | Mostly Sunny | 0 to 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alpena, MI
Last spring frost
May 5
First fall frost
Oct 17
Growing season
163 days
Hardiness zone
5b
Explore more for Alpena, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Alpena Wwtp, Mi (3.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.