The official National Weather Service forecast for Salem — 38.6056°N, 86.1011°W, population 6,617, 17.3 miles from I-65. Forecasts here are written by NWS LMK, this county’s forecast office.
| Washington County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 45 | 55 | 67 | 76 | 83 | 86 | 85 | 80 | 68 | 55 | 45 | 65 |
| Avg low °F | 22 | 26 | 33 | 42 | 53 | 61 | 65 | 62 | 55 | 44 | 34 | 27 | 44 |
| Precip in | 3.8 | 3.4 | 4.6 | 5.4 | 5.3 | 4.9 | 4.5 | 3.3 | 3.6 | 3.4 | 3.5 | 3.8 | 49.5 |
1996–2025 normals for Washington County — the climate division Salem sits in. All-time county record high 104.3°F (2012-06-30); record low -23.2°F (1994-01-19). Source: NOAA / National Weather Service.