Indianapolis, IN Weather & Climate Normals
Indianapolis's real weather, in one number
Indianapolis, IN scores 49/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Indianapolis's hottest and coldest months
Indianapolis's hottest month is Jul, averaging 74°F; its coldest is Jan, averaging 27°F, a 47.5°F swing across the year, one of the widest gaps in this dataset.
Indianapolis's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 34°F | 19°F | 3.08in |
| Feb | 39°F | 22°F | 2.34in |
| Mar | 50°F | 31°F | 3.71in |
| Apr | 62°F | 41°F | 4.46in |
| May | 72°F | 52°F | 4.99in |
| Jun | 81°F | 62°F | 5.42in |
| Jul | 84°F | 64°F | 3.87in |
| Aug | 83°F | 63°F | 3.56in |
| Sep | 77°F | 55°F | 3.21in |
| Oct | 65°F | 44°F | 3.23in |
| Nov | 51°F | 33°F | 3.44in |
| Dec | 39°F | 24°F | 3.27in |
May, Jun, Jul, Aug, and Sep are the best time to see Indianapolis at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Indianapolis
Over a typical year, Indianapolis sees about 44.58in of precipitation a year across roughly 123 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Indianapolis ranks
Indianapolis ranks 2014 of 4876 US cities in this dataset for comfort score, and 12 of 126 within IN. About 891,484 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Indianapolis Se Side, IN US, 5.9 miles from Indianapolis, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is