The official National Weather Service forecast for Anderson — 40.1053°N, 85.6803°W, population 79,517, 5.3 miles from I-69. Forecasts here are written by NWS IND, this county’s forecast office.
| Madison County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 35 | 39 | 51 | 63 | 73 | 82 | 84 | 83 | 78 | 66 | 52 | 40 | 62 |
| Avg low °F | 20 | 23 | 31 | 41 | 51 | 61 | 63 | 62 | 54 | 44 | 33 | 25 | 42 |
| Precip in | 2.9 | 2.5 | 3.4 | 4.2 | 4.6 | 5.1 | 4.3 | 3.5 | 3.1 | 3.2 | 2.9 | 3.0 | 42.7 |
1996–2025 normals for Madison County — the climate division Anderson sits in. All-time county record high 103.2°F (2012-06-29); record low -24.6°F (1994-01-19). Source: NOAA / National Weather Service.