The official National Weather Service forecast for Medora — 46.9139°N, 103.5243°W, 4.4 miles from I-94.
| Billings County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 30 | 42 | 55 | 66 | 76 | 85 | 84 | 74 | 57 | 42 | 29 | 56 |
| Avg low °F | 6 | 8 | 18 | 29 | 40 | 50 | 56 | 54 | 44 | 32 | 20 | 10 | 31 |
| Precip in | 0.3 | 0.4 | 0.6 | 1.2 | 2.8 | 2.8 | 2.2 | 1.7 | 1.5 | 1.3 | 0.5 | 0.5 | 15.8 |
1996–2025 normals for Billings County — the climate division Medora sits in. All-time county record high 109.1°F (2026-07-13); record low -39.4°F (1962-02-28). Source: NOAA / National Weather Service.