The official National Weather Service forecast for Barnsdall — 36.562°N, 96.1617°W, 33.3 miles from I-44. Forecasts here are written by NWS TSA, this county’s forecast office.
| Osage County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 52 | 62 | 71 | 78 | 87 | 92 | 92 | 85 | 73 | 61 | 50 | 71 |
| Avg low °F | 24 | 28 | 38 | 47 | 57 | 66 | 70 | 69 | 61 | 49 | 37 | 28 | 48 |
| Precip in | 1.4 | 1.6 | 3.0 | 4.1 | 5.9 | 5.1 | 3.7 | 3.5 | 3.2 | 3.7 | 2.2 | 1.7 | 39.1 |
1996–2025 normals for Osage County — the climate division Barnsdall sits in. All-time county record high 112.6°F (1954-07-14); record low -15.5°F (2011-02-10). Source: NOAA / National Weather Service.