The official National Weather Service forecast for Bloomington — 39.1653°N, 86.5264°W, population 110,103, 4.5 miles from I-69. Forecasts here are written by NWS IND, this county’s forecast office.
| Monroe County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 37 | 42 | 53 | 65 | 74 | 82 | 85 | 84 | 79 | 67 | 53 | 42 | 64 |
| Avg low °F | 21 | 24 | 32 | 41 | 52 | 61 | 64 | 62 | 55 | 44 | 33 | 26 | 43 |
| Precip in | 3.5 | 2.9 | 4.0 | 5.1 | 5.1 | 5.3 | 4.5 | 3.1 | 3.3 | 3.5 | 3.4 | 3.5 | 47.2 |
1996–2025 normals for Monroe County — the climate division Bloomington sits in. All-time county record high 104.2°F (2012-07-08); record low -25.9°F (1994-01-19). Source: NOAA / National Weather Service.