The official National Weather Service forecast for New Miami — 39.4348°N, 84.5369°W, 10.4 miles from I-75.
| Butler County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 43 | 53 | 65 | 75 | 83 | 86 | 85 | 79 | 67 | 54 | 43 | 64 |
| Avg low °F | 22 | 24 | 33 | 42 | 52 | 61 | 64 | 63 | 56 | 44 | 34 | 27 | 44 |
| Precip in | 3.2 | 2.8 | 3.8 | 4.4 | 4.8 | 4.8 | 4.0 | 3.1 | 3.4 | 3.1 | 2.9 | 3.4 | 43.7 |
1996–2025 normals for Butler County — the climate division New Miami sits in. All-time county record high 102.8°F (2012-07-08); record low -24.2°F (1994-01-19). Source: NOAA / National Weather Service.