The official National Weather Service forecast for Mackinaw City — 45.7777°N, 84.7298°W, 0.6 miles from I-75. Forecasts here are written by NWS APX, this county’s forecast office.
| Cheboygan County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 29 | 39 | 52 | 66 | 75 | 80 | 78 | 71 | 57 | 44 | 32 | 54 |
| Avg low °F | 12 | 11 | 19 | 30 | 41 | 51 | 56 | 55 | 48 | 38 | 29 | 20 | 34 |
| Precip in | 1.8 | 1.4 | 1.9 | 2.7 | 2.9 | 3.2 | 3.0 | 3.1 | 3.1 | 3.7 | 2.5 | 2.3 | 31.6 |
1996–2025 normals for Cheboygan County — the climate division Mackinaw City sits in. All-time county record high 97.7°F (1988-07-07); record low -32.5°F (1979-02-18). Source: NOAA / National Weather Service.