
A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >
Below is a table of monthly rainfall (in inches) for the Indianapolis International Airport for the past 20 years. Table is updated monthly.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 2005 | 9.39 | 2.59 | 1.14 | 4.69 | 2.51 | 3.59 | 2.98 | 4.20 | 4.67 | 1.64 | 3.64 | 2.69 | 43.73 |
| 2006 | 3.30 | 1.89 | 6.79 | 3.63 | 4.34 | 5.63 | 3.98 | 3.01 | 3.53 | 5.45 | 4.25 | 5.24 | 51.04 |
| 2007 | 4.41 | 2.77 | 4.91 | 3.30 | 1.97 | 2.22 | 1.90 | 3.43 | 1.59 | 2.80 | 1.85 | 5.55 | 36.70 |
| 2008 | 2.14 | 4.34 | 7.49 | 1.54 | 5.54 | 8.00 | 6.58 | 1.83 | 2.04 | 1.97 | 1.97 | 5.58 | 49.02 |
| 2009 | 1.72 | 2.69 | 2.28 | 7.23 | 6.69 | 6.60 | 4.60 | 4.94 | 1.86 | 5.59 | 1.16 | 3.30 | 48.66 |
| 2010 | 1.22 | 0.97 | 3.09 | 2.97 | 4.43 | 9.73 | 2.87 | 0.37 | 0.56 | 1.32 | 4.46 | 1.86 | 33.85 |
| 2011 | 2.20 | 5.25 | 3.73 | 7.98 | 4.97 | 5.76 | 0.47 | 1.11 | 5.37 | 2.82 | 4.87 | 5.10 | 49.63 |
| 2012 | 3.48 | 1.38 | 4.14 | 3.36 | 2.70 | 0.09 | 0.83 | 6.51 | 7.73 | 3.87 | 1.33 | 2.58 | 38.00 |
| 2013 | 5.51 | 2.27 | 1.96 | 8.59 | 3.50 | 3.66 | 3.29 | 1.15 | 2.86 | 5.46 | 3.23 | 4.44 | 45.92 |
| 2014 | 2.34 | 2.45 | 2.38 | 5.39 | 4.87 | 7.04 | 3.10 | 2.95 | 2.53 | 3.17 | 2.80 | 2.55 | 41.57 |
| 2015 | 1.81 | 1.34 | 3.53 | 4.00 | 2.45 | 8.36 | 13.14 | 1.55 | 1.70 | 1.82 | 2.86 | 5.59 | 48.15 |
| 2016 | 1.46 | 2.25 | 4.20 | 5.86 | 3.74 | 4.53 | 5.66 | 7.32 | 4.67 | 1.96 | 2.77 | 1.52 | 45.94 |
| 2017 | 4.35 | 1.10 | 4.72 | 5.60 | 8.51 | 6.53 | 6.18 | 1.77 | 0.66 | 2.95 | 3.96 | 1.12 | 47.75 |
| 2018 | 2.00 | 4.65 | 4.07 | 5.41 | 1.42 | 3.99 | 3.00 | 4.28 | 5.46 | 2.45 | 3.54 | 3.79 | 44.06 |
| 2019 | 2.82 | 4.68 | 5.02 | 4.96 | 4.16 | 7.51 | 3.86 | 3.54 | 0.47 | 4.48 | 2.61 | 3.05 | 47.16 |
| 2020 | 5.32 | 3.89 | 4.68 | 1.72 | 7.13 | 4.44 | 4.90 | 2.09 | 0.12 | 5.35 | 3.65 | 1.63 | 44.92 |
| 2021 | 2.39 | 1.84 | 3.87 | 3.80 | 3.57 | 7.51 | 6.34 | 1.99 | 5.25 | 7.74 | 1.22 | 4.23 | 49.75 |
| 2022 | 1.13 | 4.58 | 4.67 | 4.42 | 3.77 | 1.18 | 3.10 | 4.44 | 2.12 | 1.42 | 1.42 | 2.63 | 34.88 |
| 2023 | 3.97 | 2.55 | 6.03 | 2.29 | 2.84 | 1.41 | 6.06 | 2.97 | 1.60 | 2.47 | 0.93 | 1.26 | 34.38 |
| 2024 | 4.92 | 1.62 | 2.47 | 7.77 | 5.55 | 2.16 | 6.46 | 2.10 | 1.52 | 0.60 | 3.92 | 4.73 | 43.53 |
| 2025 | 1.17 | 1.52 | 2.78 | 8.02 | 4.42 | 4.22 | 4.30 | 1.31 | 1.77 | 1.97 | 2.83 | ||
| 1991-2020 Normals |
3.12 | 2.43 | 3.69 | 4.34 | 4.75 | 4.95 | 4.42 | 3.20 | 3.14 | 3.22 | 3.45 | 2.92 | 43.63 |