The official National Weather Service forecast for Ada — 40.7695°N, 83.8227°W, population 5,343, 8.5 miles from I-75.
| Hardin County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 38 | 49 | 62 | 72 | 81 | 84 | 82 | 77 | 64 | 51 | 39 | 61 |
| Avg low °F | 20 | 22 | 30 | 40 | 50 | 60 | 63 | 61 | 55 | 44 | 33 | 25 | 42 |
| Precip in | 2.5 | 2.3 | 2.8 | 3.5 | 4.2 | 4.0 | 3.9 | 3.4 | 3.0 | 2.8 | 2.5 | 2.7 | 37.6 |
1996–2025 normals for Hardin County — the climate division Ada sits in. All-time county record high 102.3°F (1988-06-26); record low -22.3°F (1994-01-19). Source: NOAA / National Weather Service.