The official National Weather Service forecast for Colfax — 40.195°N, 86.6672°W, 6 miles from I-65. Forecasts here are written by NWS IND, this county’s forecast office.
| Clinton County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 38 | 50 | 62 | 73 | 81 | 83 | 82 | 78 | 65 | 51 | 39 | 61 |
| Avg low °F | 18 | 21 | 30 | 40 | 51 | 60 | 63 | 61 | 54 | 43 | 33 | 24 | 42 |
| Precip in | 2.7 | 2.4 | 3.1 | 4.0 | 4.6 | 5.2 | 4.5 | 3.5 | 2.9 | 3.3 | 2.8 | 2.9 | 41.9 |
1996–2025 normals for Clinton County — the climate division Colfax sits in. All-time county record high 101.8°F (1980-07-16); record low -24.8°F (1985-01-20). Source: NOAA / National Weather Service.