The official National Weather Service forecast for Crestline — 40.7876°N, 82.7366°W, population 4,597, 16.3 miles from I-71.
| Crawford County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 38 | 48 | 61 | 72 | 80 | 83 | 82 | 76 | 64 | 50 | 39 | 61 |
| Avg low °F | 19 | 21 | 29 | 39 | 49 | 59 | 62 | 60 | 53 | 43 | 32 | 25 | 41 |
| Precip in | 2.6 | 2.4 | 2.9 | 3.8 | 4.4 | 4.4 | 4.0 | 3.6 | 3.4 | 3.1 | 2.7 | 3.0 | 40.3 |
1996–2025 normals for Crawford County — the climate division Crestline sits in. All-time county record high 101.6°F (1988-06-26); record low -24.0°F (1994-01-19). Source: NOAA / National Weather Service.