Onaway, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Onaway, a city in Presque Isle County, Michigan.
Today
87°F
Sunny
Sunny, with a high near 87. Southwest wind 5 to 10 mph.
7-day forecast for Onaway
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 5 to 10 mph SW | 1% |
| Tonight | 61°F | Mostly Cloudy then Showers And Thunderstorms | 5 to 10 mph W | 76% |
| Wednesday | 77°F | Showers And Thunderstorms | 5 mph N | 76% |
| Wednesday Night | 54°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 22% |
| Thursday | 80°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 18% |
| Thursday Night | 56°F | Mostly Clear | 5 mph SE | 8% |
| Friday | 86°F | Sunny | 5 mph SW | 2% |
| Friday Night | 61°F | Mostly Clear | 5 mph SW | 4% |
| Saturday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 22% |
| Saturday Night | 61°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 34% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 42% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 40% |
| Monday | 81°F | Chance Rain Showers | 5 to 10 mph W | 28% |
| Monday Night | 56°F | Chance Rain Showers | 5 to 10 mph NW | 32% |
Forecast source: National Weather Service (api.weather.gov) for Onaway (45.359, -84.227). Updated through the day.
Growing snapshot for Onaway
Last spring frost
May 22
First fall frost
Oct 2
Growing season
135 days
Hardiness zone
5a
More local growing data for Onaway: nearby ZIP 49765 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Onaway 4N, Mi (5.3 mi from Onaway). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.