The official National Weather Service forecast for Cook — 47.8524°N, 92.6896°W, 77.9 miles from I-35. Forecasts here are written by NWS DLH, this county’s forecast office.
| St. Louis County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 18 | 23 | 37 | 51 | 65 | 74 | 79 | 76 | 68 | 53 | 36 | 22 | 50 |
| Avg low °F | -2 | 0 | 13 | 26 | 38 | 49 | 54 | 52 | 45 | 33 | 20 | 6 | 28 |
| Precip in | 0.9 | 0.9 | 1.2 | 2.2 | 3.1 | 4.3 | 3.6 | 3.2 | 3.3 | 2.7 | 1.6 | 1.4 | 28.4 |
1996–2025 normals for St. Louis County — the climate division Cook sits in. All-time county record high 96.9°F (2006-07-16); record low -44.9°F (1996-02-02). Source: NOAA / National Weather Service.