The official National Weather Service forecast for Osage City — 38.6339°N, 95.8258°W, 14.6 miles from I-35.
| Osage County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 45 | 57 | 67 | 76 | 85 | 90 | 88 | 81 | 69 | 56 | 44 | 66 |
| Avg low °F | 21 | 24 | 34 | 44 | 54 | 64 | 68 | 66 | 58 | 46 | 34 | 25 | 45 |
| Precip in | 1.0 | 1.4 | 2.4 | 3.6 | 5.5 | 5.0 | 3.8 | 4.1 | 3.5 | 3.3 | 2.0 | 1.4 | 37.0 |
1996–2025 normals for Osage County — the climate division Osage City sits in. All-time county record high 111.3°F (1954-07-14); record low -20.6°F (1989-12-23). Source: NOAA / National Weather Service.