The official National Weather Service forecast for Rugby — 48.3689°N, 99.9963°W, 104 miles from I-94.
| Pierce County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 18 | 21 | 34 | 51 | 66 | 75 | 81 | 80 | 71 | 55 | 36 | 22 | 51 |
| Avg low °F | -2 | 1 | 13 | 27 | 40 | 51 | 56 | 53 | 44 | 31 | 17 | 4 | 28 |
| Precip in | 0.4 | 0.4 | 0.6 | 1.1 | 2.7 | 3.6 | 2.8 | 2.3 | 1.7 | 1.4 | 0.5 | 0.6 | 18.1 |
1996–2025 normals for Pierce County — the climate division Rugby sits in. All-time county record high 104.0°F (1988-07-28); record low -41.6°F (1951-01-29). Source: NOAA / National Weather Service.