The official National Weather Service forecast for West Fargo — 46.875°N, 96.9004°W, 1.9 miles from I-94.
| Cass County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 19 | 23 | 37 | 53 | 68 | 78 | 83 | 81 | 73 | 57 | 39 | 24 | 53 |
| Avg low °F | 1 | 3 | 17 | 31 | 44 | 55 | 59 | 56 | 48 | 35 | 21 | 7 | 31 |
| Precip in | 0.5 | 0.5 | 0.9 | 1.6 | 3.2 | 3.8 | 2.9 | 2.8 | 2.5 | 2.1 | 0.7 | 0.9 | 22.4 |
1996–2025 normals for Cass County — the climate division West Fargo sits in. All-time county record high 105.3°F (1988-07-06); record low -39.0°F (1996-02-02). Source: NOAA / National Weather Service.