The official National Weather Service forecast for Idaville — 40.757°N, 86.6495°W, 20.2 miles from I-65. Forecasts here are written by NWS IWX, this county’s forecast office.
| White County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 33 | 38 | 50 | 62 | 73 | 82 | 84 | 83 | 78 | 65 | 51 | 38 | 61 |
| Avg low °F | 18 | 21 | 30 | 39 | 50 | 60 | 63 | 61 | 53 | 42 | 32 | 23 | 41 |
| Precip in | 2.4 | 2.2 | 2.8 | 3.7 | 4.3 | 4.9 | 4.5 | 3.9 | 2.8 | 3.0 | 2.5 | 2.5 | 39.5 |
1996–2025 normals for White County — the climate division Idaville sits in. All-time county record high 101.6°F (1980-07-16); record low -24.2°F (1985-01-20). Source: NOAA / National Weather Service.