| Month | High (°F) | Low (°F) | Precipitation (in) |
|---|---|---|---|
| January | 35.6 | 19.8 | 2.9 |
| February | 40.1 | 22.8 | 2.5 |
| March | 50.9 | 31.1 | 3.3 |
| April | 63.5 | 40.6 | 4.4 |
| May | 73.6 | 51.3 | 4.8 |
| June | 82.0 | 60.5 | 4.8 |
| July | 84.8 | 63.7 | 4.3 |
| August | 83.5 | 61.8 | 3.6 |
| September | 77.9 | 54.1 | 3.3 |
| October | 65.8 | 43.2 | 3.3 |
| November | 51.6 | 33.1 | 3.4 |
| December | 40.1 | 24.9 | 3.0 |
| Entire Year | 62.5 | 42.2 | 43.6 |
| City | Average (°F) | Record (°F) | Yearly (inches) | |||
|---|---|---|---|---|---|---|
| High | Low | High | Low | Precipitation | Snow | |
| Angola | 57.9 | 38.3 | 106 | -27 | 38.6 | 37.9 |
| Bedford | 64.2 | 42.5 | 111 | -29 | 48.0 | 16.3 |
| Berne | 60.8 | 42.1 | 107 | -24 | 41.1 | 26.5 |
| Bloomington | 63.6 | 44.1 | 110 | -21 | 48.9 | 16.6 |
| Bluffton | 60.3 | 41.2 | 111 | -24 | 39.8 | 25.4 |
| Boonville | 67.8 | 46.9 | 107 | -25 | 51.0 | 11.5 |
| Columbia City | 59.3 | 39.7 | 103 | -24 | 38.3 | 23.7 |
| Columbus | 64.1 | 43.8 | 111 | -27 | 47.0 | 16.3 |
| Crawfordsville | 61.3 | 39.1 | 110 | -31 | 43.7 | 23.1 |
| Evansville | 67.1 | 47.0 | 107 | -23 | 47.9 | 10.7 |
| Fort Wayne | 60.6 | 41.3 | 106 | -24 | 39.5 | 33.2 |
| Frankfort | 61.3 | 42.2 | 108 | -26 | 42.9 | 26.5 |
| Goshen | 59.9 | 40.7 | 111 | -25 | 35.1 | n/a |
| Greenfield | 61.9 | 42.6 | 109 | -29 | 47.7 | 19.3 |
| Huntington | 61.3 | 40.0 | 110 | -28 | 39.6 | 25.8 |
| Indianapolis | 63.0 | 44.6 | 112 | -27 | 43.6 | 24.4 |
| Kokomo | 60.9 | 40.4 | 110 | -26 | 44.6 | 35.2 |
| Logansport | 60.7 | 41.2 | 106 | -24 | 41.1 | 20.5 |
| Marion | 60.8 | 41.0 | 108 | -23 | 41.8 | 23.2 |
| Martinsville | 62.7 | 41.2 | 105 | -35 | 45.5 | 16.5 |
| Mt. Vernon | 66.6 | 47.5 | 109 | -21 | 45.2 | 7.5 |
| Muncie | 62.0 | 42.3 | 106 | -29 | 41.4 | n/a |
| New Castle | 60.6 | 40.1 | 107 | -26 | 44.4 | 23.0 |
| North Vernon | 65.8 | 44.8 | 105 | -24 | 48.6 | 15.2 |
| Plymouth | 59.7 | 40.1 | 109 | -25 | 40.3 | 55.2 |
| Portage | 58.4 | 42.1 | 105 | -23 | 38.8 | 39.6 |
| Princeton | 66.5 | 45.7 | 113 | -20 | 49.3 | 11.1 |
| Richmond | 62.4 | 42.3 | 104 | -27 | 42.3 | n/a |
| Rochester | 60.0 | 40.9 | 109 | -30 | 40.7 | 30.3 |
| Rushville | 62.3 | 42.3 | 108 | -31 | 45.6 | 15.6 |
| Shelbyville | 63.1 | 42.9 | 108 | -25 | 43.8 | 10.9 |
| South Bend | 59.4 | 41.1 | 109 | -22 | 39.2 | 64.9 |
| Tell City | 66.7 | 48.1 | 106 | -17 | 50.0 | 4.1 |
| Terre Haute | 64.3 | 43.6 | 107 | -24 | 40.9 | n/a |
| Valparaiso | 59.7 | 40.8 | 105 | -25 | 34.1 | n/a |
| Vincennes | 66.0 | 44.3 | 111 | -26 | 46.8 | 7.4 |
| Warsaw | 59.5 | 40.6 | 103 | -25 | 40.2 | 21.9 |
| Washington | 66.5 | 46.5 | 113 | -19 | 46.4 | 8.8 |
| West Lafayette | 62.3 | 42.4 | 111 | -23 | 37.4 | n/a |
| Whitestown | 62.8 | 42.9 | 112 | -27 | 40.8 | 23.2 |