Hattiesburg weather by month
Measured at Hattiesburg/Chain Muni
Averages and records for each calendar month at Hattiesburg/Chain Muni, United States, from 2000 to 2026. The warmest month is August, averaging 33.8°C; the coolest is January at 16.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 16.1°C | 3.2°C | 28.3°C31 January 2002 | −11.0°C30 January 2014 | 26 / 26 |
| February | 18.8°C | 5.6°C | 31.1°C20 February 2026 | −7.7°C16 February 2021 | 26 / 26 |
| March | 22.9°C | 9.3°C | 31.7°C17 March 2002 | −5.6°C5 March 2002 | 26 / 26 |
| April | 26.3°C | 12.6°C | 33.9°C18 April 2006 | 0.6°C15 April 2008 | 26 / 26 |
| May | 29.8°C | 17.2°C | 36.7°C27 May 2012 | 3.3°C4 May 2013 | 27 / 27 |
| June | 32.8°C | 21.2°C | 39.4°C4 June 2011 | 12.2°C8 June 2000 | 27 / 27 |
| July | 33.6°C | 22.6°C | 41.1°C16 July 2000 | 16.1°C17 July 2014 | 27 / 27 |
| August | 33.8°C | 22.5°C | 41.7°C26 August 2023 | 13.3°C14 August 2004 | 26 / 27 |
| September | 31.7°C | 19.7°C | 38.9°C7 September 2023 | 8.3°C27 September 2000 | 26 / 27 |
| October | 27.1°C | 13.0°C | 36.7°C2 October 2019 | −0.6°C29 October 2008 | 26 / 26 |
| November | 21.5°C | 7.1°C | 33.3°C6 November 2024 | −5.6°C22 November 2008 | 26 / 26 |
| December | 17.6°C | 5.0°C | 28.9°C2 December 2007 | −8.3°C20 December 2000 | 26 / 26 |
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 26 to 27 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.