The official National Weather Service forecast for Harrison — 44.0192°N, 84.7995°W, 32.5 miles from I-75. Forecasts here are written by NWS GRR, this county’s forecast office.
| Clare County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 28 | 32 | 42 | 55 | 68 | 78 | 82 | 79 | 73 | 59 | 45 | 33 | 56 |
| Avg low °F | 14 | 14 | 22 | 32 | 43 | 53 | 56 | 55 | 48 | 38 | 29 | 20 | 35 |
| Precip in | 2.0 | 1.7 | 2.2 | 3.3 | 3.7 | 3.5 | 3.0 | 3.2 | 2.8 | 3.2 | 2.0 | 2.2 | 32.8 |
1996–2025 normals for Clare County — the climate division Harrison sits in. All-time county record high 99.3°F (1995-06-20); record low -32.5°F (1951-01-30). Source: NOAA / National Weather Service.