The official National Weather Service forecast for Elgin — 46.4039°N, 101.846°W, 33.9 miles from I-94.
| Grant County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 25 | 28 | 41 | 55 | 67 | 77 | 85 | 83 | 74 | 57 | 42 | 29 | 55 |
| Avg low °F | 5 | 7 | 18 | 29 | 41 | 51 | 57 | 55 | 46 | 32 | 19 | 9 | 31 |
| Precip in | 0.4 | 0.5 | 0.8 | 1.5 | 2.8 | 3.1 | 2.3 | 2.1 | 1.6 | 1.4 | 0.5 | 0.5 | 17.5 |
1996–2025 normals for Grant County — the climate division Elgin sits in. All-time county record high 107.7°F (2002-06-30); record low -40.8°F (1966-01-29). Source: NOAA / National Weather Service.