The official National Weather Service forecast for Troy — 38.9795°N, 90.9807°W, population 16,669, 35.1 miles from I-44. Forecasts here are written by NWS LSX, this county’s forecast office.
| Lincoln County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 39 | 44 | 55 | 67 | 76 | 84 | 88 | 86 | 81 | 69 | 55 | 43 | 66 |
| Avg low °F | 21 | 24 | 34 | 43 | 54 | 63 | 67 | 65 | 57 | 45 | 34 | 26 | 44 |
| Precip in | 2.2 | 2.1 | 3.2 | 4.2 | 4.9 | 4.6 | 4.4 | 3.5 | 3.0 | 3.3 | 2.7 | 2.3 | 40.4 |
1996–2025 normals for Lincoln County — the climate division Troy sits in. All-time county record high 109.7°F (1954-07-14); record low -20.2°F (1989-12-23). Source: NOAA / National Weather Service.