Atlanta/Dekalb-Peachtree Arpt weather by month
Averages and records for each calendar month at Atlanta/Dekalb-Peachtree Arpt, United States, from 1998 to 2026. The warmest month is July, averaging 32.2°C; the coolest is January at 11.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 11.5°C | 0.6°C | 25.6°C31 January 2002 | −14.9°C7 January 2014 | 28 / 28 |
| February | 14.4°C | 2.8°C | 26.7°C24 February 2018 | −11.0°C19 February 2015 | 28 / 28 |
| March | 18.8°C | 6.4°C | 32.2°C25 March 2007 | −6.7°C1 March 2002 | 28 / 29 |
| April | 23.0°C | 10.2°C | 31.7°C18 April 2002 | −2.1°C5 April 2011 | 29 / 29 |
| May | 27.1°C | 15.2°C | 34.4°C30 May 2006 | 2.8°C10 May 2020 | 29 / 29 |
| June | 30.9°C | 19.6°C | 40.6°C30 June 2012 | 10.6°C7 June 2000 | 29 / 29 |
| July | 32.2°C | 21.5°C | 40.6°C1 July 2012 | 13.3°C30 July 2014 | 29 / 29 |
| August | 31.7°C | 21.0°C | 38.9°C16 August 2007 | 12.2°C27 August 2025 | 29 / 29 |
| September | 28.7°C | 17.6°C | 37.8°C5 September 2026 | 5.6°C28 September 2022 | 28 / 29 |
| October | 23.4°C | 11.2°C | 36.1°C3 October 2019 | −2.8°C28 October 2001 | 28 / 28 |
| November | 17.8°C | 5.5°C | 28.3°C2 November 2003 | −7.7°C22 November 2008 | 28 / 28 |
| December | 13.1°C | 2.5°C | 25.6°C27 December 2025 | −13.8°C24 December 2022 | 28 / 28 |
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 28 to 29 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.