The official National Weather Service forecast for Seelyville — 39.492°N, 87.2672°W, 3.5 miles from I-70. Forecasts here are written by NWS IND, this county’s forecast office.
| Vigo County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 37 | 42 | 53 | 66 | 75 | 84 | 86 | 85 | 80 | 68 | 54 | 42 | 64 |
| Avg low °F | 21 | 24 | 33 | 43 | 53 | 62 | 65 | 63 | 56 | 44 | 34 | 26 | 44 |
| Precip in | 3.0 | 2.5 | 3.6 | 4.8 | 4.5 | 5.2 | 4.2 | 2.9 | 2.8 | 3.5 | 3.0 | 3.0 | 43.0 |
1996–2025 normals for Vigo County — the climate division Seelyville sits in. All-time county record high 105.8°F (2012-07-08); record low -23.0°F (1994-01-19). Source: NOAA / National Weather Service.