The official National Weather Service forecast for Cass City — 43.6009°N, 83.1747°W, 37.1 miles from I-75. Forecasts here are written by NWS DTX, this county’s forecast office.
| Tuscola County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 33 | 43 | 56 | 69 | 79 | 82 | 80 | 74 | 61 | 47 | 35 | 57 |
| Avg low °F | 16 | 17 | 25 | 35 | 46 | 56 | 60 | 59 | 52 | 41 | 32 | 23 | 38 |
| Precip in | 1.9 | 1.8 | 1.9 | 3.0 | 3.5 | 3.4 | 3.2 | 3.5 | 3.0 | 3.0 | 2.1 | 2.0 | 32.3 |
1996–2025 normals for Tuscola County — the climate division Cass City sits in. All-time county record high 100.3°F (1988-07-07); record low -21.6°F (2015-02-20). Source: NOAA / National Weather Service.