The official National Weather Service forecast for Wishek — 46.2569°N, 99.5571°W, 42.9 miles from I-94.
| McIntosh County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 21 | 25 | 37 | 52 | 66 | 76 | 82 | 80 | 71 | 55 | 39 | 25 | 52 |
| Avg low °F | 3 | 5 | 17 | 29 | 41 | 53 | 58 | 55 | 47 | 33 | 20 | 9 | 31 |
| Precip in | 0.5 | 0.6 | 0.9 | 1.7 | 3.0 | 3.3 | 2.8 | 2.4 | 2.3 | 1.7 | 0.6 | 0.7 | 20.5 |
1996–2025 normals for McIntosh County — the climate division Wishek sits in. All-time county record high 108.7°F (1973-07-12); record low -39.8°F (1967-12-31). Source: NOAA / National Weather Service.