The official National Weather Service forecast for Atlanta — 45.0047°N, 84.1439°W, 25.9 miles from I-75. Forecasts here are written by NWS APX, this county’s forecast office.
| Montmorency County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 30 | 40 | 53 | 67 | 76 | 81 | 78 | 71 | 57 | 44 | 32 | 55 |
| Avg low °F | 12 | 11 | 19 | 30 | 41 | 51 | 56 | 54 | 47 | 37 | 29 | 19 | 34 |
| Precip in | 1.6 | 1.4 | 1.7 | 2.7 | 3.0 | 3.1 | 3.1 | 3.1 | 2.9 | 3.0 | 2.0 | 2.0 | 29.6 |
1996–2025 normals for Montmorency County — the climate division Atlanta sits in. All-time county record high 99.0°F (1988-07-07); record low -39.2°F (1979-02-17). Source: NOAA / National Weather Service.