The official National Weather Service forecast for Glasgow — 48.197°N, 106.6367°W, 115.2 miles from I-94.
| Valley County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 24 | 27 | 40 | 55 | 66 | 75 | 85 | 83 | 72 | 56 | 39 | 26 | 54 |
| Avg low °F | 4 | 6 | 17 | 29 | 40 | 49 | 55 | 53 | 44 | 31 | 18 | 7 | 29 |
| Precip in | 0.4 | 0.4 | 0.5 | 1.0 | 2.4 | 2.7 | 1.8 | 1.3 | 1.2 | 0.9 | 0.4 | 0.4 | 13.4 |
1996–2025 normals for Valley County — the climate division Glasgow sits in. All-time county record high 106.8°F (1983-08-07); record low -51.9°F (1954-01-20). Source: NOAA / National Weather Service.