The official National Weather Service forecast for North Branch — 45.5114°N, 92.9802°W, population 6,368, 20.1 miles from I-35. Forecasts here are written by NWS MPX, this county’s forecast office.
| Chisago County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 23 | 28 | 41 | 55 | 68 | 78 | 82 | 80 | 72 | 58 | 42 | 28 | 55 |
| Avg low °F | 5 | 7 | 20 | 33 | 45 | 55 | 60 | 58 | 51 | 38 | 25 | 12 | 34 |
| Precip in | 0.8 | 0.9 | 1.7 | 2.9 | 4.0 | 4.3 | 4.0 | 4.0 | 3.1 | 2.8 | 1.5 | 1.3 | 31.3 |
1996–2025 normals for Chisago County — the climate division North Branch sits in. All-time county record high 100.1°F (1988-08-01); record low -38.6°F (1951-01-30). Source: NOAA / National Weather Service.