The official National Weather Service forecast for Alberton — 47.0016°N, 114.4734°W, 1.1 miles from I-90.
| Mineral County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 31 | 34 | 43 | 50 | 60 | 68 | 80 | 78 | 67 | 51 | 37 | 31 | 52 |
| Avg low °F | 20 | 20 | 25 | 29 | 36 | 43 | 49 | 48 | 41 | 33 | 25 | 20 | 32 |
| Precip in | 4.5 | 4.2 | 4.0 | 2.9 | 2.9 | 2.8 | 0.8 | 1.2 | 1.6 | 3.2 | 4.7 | 5.0 | 37.8 |
1996–2025 normals for Mineral County — the climate division Alberton sits in. All-time county record high 98.0°F (2018-08-11); record low -31.5°F (1979-01-01). Source: NOAA / National Weather Service.