Onekama, MI Weather & Growing Conditions
Overnight
47°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. Low around 47, with temperatures rising to around 49 overnight. East wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Chance Rain Showers | 5 mph E | 54% |
| Saturday | 65°F | Rain Showers Likely | 10 mph SE | 57% |
| Saturday Night | 49°F | Chance Rain Showers | 5 to 10 mph E | 46% |
| Sunday | 69°F | Slight Chance Rain Showers then Partly Sunny | 5 to 15 mph NE | 20% |
| Sunday Night | 45°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Monday | 64°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Monday Night | 42°F | Mostly Cloudy | 5 mph NE | 1% |
| Tuesday | 66°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Tuesday Night | 43°F | Partly Cloudy | 5 mph E | 7% |
| Wednesday | 67°F | Mostly Sunny | 5 mph E | 11% |
| Wednesday Night | 45°F | Partly Cloudy | 0 to 5 mph E | 11% |
| Thursday | 69°F | Mostly Sunny | 5 mph NE | 2% |
| Thursday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Onekama, MI
Last spring frost
May 7
First fall frost
Oct 20
Growing season
163 days
Hardiness zone
6b
Explore more for Onekama, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Beulah 7Ssw, Mi (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.