The official National Weather Service forecast for Madison — 32.4618°N, 90.1154°W, 1.5 miles from I-55. Forecasts here are written by NWS JAN, this county’s forecast office.
| Madison County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 62 | 70 | 76 | 84 | 90 | 92 | 92 | 88 | 79 | 67 | 60 | 76 |
| Avg low °F | 36 | 39 | 46 | 53 | 61 | 69 | 71 | 70 | 65 | 53 | 43 | 38 | 54 |
| Precip in | 5.6 | 5.2 | 5.8 | 5.9 | 4.5 | 4.3 | 4.8 | 4.2 | 3.5 | 3.3 | 4.4 | 5.2 | 56.7 |
1996–2025 normals for Madison County — the climate division Madison sits in. All-time county record high 105.5°F (2000-08-31); record low -1.1°F (1962-01-12). Source: NOAA / National Weather Service.