Onaway, MI Weather & Growing Conditions
Overnight
36°F
Partly Cloudy
Partly cloudy, with a low around 36. South wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 36°F | Partly Cloudy | 0 mph | 1% |
| Saturday | 68°F | Partly Sunny | 0 to 10 mph SE | 11% |
| Saturday Night | 44°F | Chance Rain Showers | 0 to 5 mph E | 27% |
| Sunday | 66°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 17% |
| Sunday Night | 40°F | Partly Cloudy | 5 to 10 mph NE | 2% |
| Monday | 58°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 to 10 mph NE | 0% |
| Tuesday | 61°F | Mostly Sunny | 5 to 15 mph E | 1% |
| Tuesday Night | 40°F | Partly Cloudy | 5 to 10 mph E | 2% |
| Wednesday | 64°F | Mostly Sunny | 5 to 15 mph E | 10% |
| Wednesday Night | 42°F | Partly Cloudy | 0 to 10 mph E | 10% |
| Thursday | 66°F | Mostly Sunny | 0 to 10 mph E | 7% |
| Thursday Night | 42°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Onaway, MI
Last spring frost
May 22
First fall frost
Oct 2
Growing season
135 days
Hardiness zone
5a
Explore more for Onaway, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Onaway 4N, Mi (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.