Indianapolis/Eagle Creek Arpt climate by month
Averages and records for each calendar month at Indianapolis/Eagle Creek Arpt, United States, from 1996 to 2026. The warmest month is July, averaging 29.4°C; the coolest is January at 2.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 2.3°C | −6.0°C | 19.4°C12 January 2005 | −25.5°C7 January 2014 | 30 / 30 |
| February | 5.1°C | −4.3°C | 24.4°C20 February 2018 | −23.2°C7 February 2014 | 30 / 30 |
| March | 11.7°C | 1.1°C | 30.0°C22 March 2026 | −17.1°C6 March 2015 | 30 / 30 |
| April | 17.9°C | 6.4°C | 30.6°C30 April 2007 | −6.1°C9 April 1997 | 30 / 30 |
| May | 23.1°C | 12.2°C | 35.6°C28 May 2018 | −1.0°C9 May 2020 | 30 / 30 |
| June | 27.8°C | 17.3°C | 39.4°C28 June 2012 | 4.4°C1 June 2003 | 30 / 30 |
| July | 29.4°C | 19.3°C | 38.9°C6 July 2012 | 10.0°C2 July 2001 | 31 / 31 |
| August | 28.7°C | 18.4°C | 36.1°C2 August 2012 | 8.3°C15 August 2014 | 31 / 31 |
| September | 25.8°C | 14.3°C | 36.1°C2 September 2011 | 2.8°C24 September 2012 | 30 / 31 |
| October | 18.7°C | 7.7°C | 32.8°C7 October 2007 | −4.4°C28 October 1997 | 30 / 30 |
| November | 11.2°C | 1.6°C | 26.1°C1 November 2016 | −14.3°C13 November 2019 | 30 / 30 |
| December | 5.0°C | −3.0°C | 22.8°C6 December 1998 | −22.7°C23 December 2022 | 30 / 30 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 30 to 31 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.