The official National Weather Service forecast for Amidon — 46.4822°N, 103.3218°W, 28.5 miles from I-94.
| Slope County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 31 | 43 | 55 | 66 | 76 | 86 | 84 | 74 | 57 | 43 | 31 | 56 |
| Avg low °F | 8 | 9 | 19 | 29 | 40 | 50 | 56 | 54 | 44 | 31 | 20 | 10 | 31 |
| Precip in | 0.4 | 0.4 | 0.6 | 1.4 | 2.8 | 2.8 | 2.0 | 1.6 | 1.6 | 1.3 | 0.4 | 0.4 | 15.7 |
1996–2025 normals for Slope County — the climate division Amidon sits in. All-time county record high 109.1°F (2026-07-13); record low -37.6°F (1962-02-28). Source: NOAA / National Weather Service.