Slidell Arpt climate by month

Averages and records for each calendar month at Slidell Arpt, United States, from 1994 to 2026. The warmest month is August, averaging 33.2°C; the coolest is January at 17.1°C.

Average and record high and low temperature for each calendar month at Slidell Arpt, with the number of years behind each figure.
Month	Avg high	Avg low	Record high	Record low	Years
January	17.1°C	4.8°C	28.3°C1 January 2022	−13.2°C22 January 2025	32 / 32
February	19.3°C	7.1°C	29.4°C28 February 2023	−9.4°C5 February 1996	32 / 32
March	22.8°C	10.4°C	30.6°C27 March 2020	−5.6°C9 March 1996	32 / 32
April	25.8°C	13.6°C	32.8°C24 April 1999	0.0°C9 April 2000	33 / 33
May	29.5°C	18.0°C	35.6°C29 May 2000	3.9°C4 May 2013	33 / 33
June	32.3°C	21.8°C	39.4°C4 June 2011	12.8°C13 June 1995	33 / 33
July	33.0°C	23.0°C	38.3°C31 July 2023	17.8°C29 July 1994	33 / 33
August	33.2°C	23.0°C	42.2°C26 August 2023	14.4°C26 August 2015	33 / 33
September	31.3°C	20.4°C	37.2°C4 September 2000	7.8°C23 September 1999	32 / 33
October	27.2°C	14.2°C	36.1°C4 October 2019	−0.5°C19 October 2022	32 / 32
November	22.2°C	8.6°C	32.2°C8 November 2022	−4.9°C19 November 2014	32 / 32
December	18.4°C	6.4°C	28.9°C30 December 2021	−8.3°C20 December 1996	32 / 32

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 32 to 33 years each.

Hottest on record42.2°C26 August 2023Source: NOAA GHCN-Daily

Coldest on record−13.2°C22 January 2025Source: NOAA GHCN-Daily

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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.

Slidell Arpt climate by month

Averages and records for each calendar month at Slidell Arpt, United States, from 1994 to 2026. The warmest month is August, averaging 33.2°C; the coolest is January at 17.1°C.

Average and record high and low temperature for each calendar month at Slidell Arpt, with the number of years behind each figure.
Month	Avg high	Avg low	Record high	Record low	Years
January	17.1°C	4.8°C	28.3°C1 January 2022	−13.2°C22 January 2025	32 / 32
February	19.3°C	7.1°C	29.4°C28 February 2023	−9.4°C5 February 1996	32 / 32
March	22.8°C	10.4°C	30.6°C27 March 2020	−5.6°C9 March 1996	32 / 32
April	25.8°C	13.6°C	32.8°C24 April 1999	0.0°C9 April 2000	33 / 33
May	29.5°C	18.0°C	35.6°C29 May 2000	3.9°C4 May 2013	33 / 33
June	32.3°C	21.8°C	39.4°C4 June 2011	12.8°C13 June 1995	33 / 33
July	33.0°C	23.0°C	38.3°C31 July 2023	17.8°C29 July 1994	33 / 33
August	33.2°C	23.0°C	42.2°C26 August 2023	14.4°C26 August 2015	33 / 33
September	31.3°C	20.4°C	37.2°C4 September 2000	7.8°C23 September 1999	32 / 33
October	27.2°C	14.2°C	36.1°C4 October 2019	−0.5°C19 October 2022	32 / 32
November	22.2°C	8.6°C	32.2°C8 November 2022	−4.9°C19 November 2014	32 / 32
December	18.4°C	6.4°C	28.9°C30 December 2021	−8.3°C20 December 1996	32 / 32

Hottest on record42.2°C26 August 2023Source: NOAA GHCN-Daily

Coldest on record−13.2°C22 January 2025Source: NOAA GHCN-Daily