Weather forecast for: Ontonagon MI
Last Update: 1:33 am EDT Sep 24, 2026
Overnight: Partly cloudy, with a low around 44. South wind around 5 mph.
Thursday: Increasing clouds, with a high near 68. South wind around 5 mph.
Thursday Night: Mostly cloudy, with a low around 51. South wind around 5 mph.
Friday: Cloudy through mid morning, then gradual clearing, with a high near 68. South wind around 5 mph becoming north in the afternoon.
Friday Night: Partly cloudy, with a low around 49. Northeast wind around 5 mph becoming southeast after midnight.
Saturday: Mostly sunny, with a high near 70.
Saturday Night: Mostly cloudy, with a low around 53.
Sunday: Mostly cloudy, with a high near 64.
Sunday Night: Mostly cloudy, with a low around 53.
Monday: Partly sunny, with a high near 68.
Monday Night: A chance of showers. Mostly cloudy, with a low around 56.
Tuesday: Showers likely. Mostly cloudy, with a high near 66.
Tuesday Night: Showers likely. Mostly cloudy, with a low around 52.
Wednesday: A chance of showers. Mostly cloudy, with a high near 60. Breezy.