Slidell Weather in 1999

Historical record of Slidell, Louisiana weather for the year 1999 based on NOAA data.

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1999 Slidell Weather Extremes
Highest temperature	98 °F	August 18
Lowest temperature	20 °F	January 11
Highest daily low	79 °F	July 30
Lowest daily high	39 °F	January 5
Most daily precipitation	3.0 inches	October 9
Most daily snow	none	-
Total annual precipitation	40.7 inches	-
Total annual snow	none	-

What was the hottest temperature in Slidell in 1999?

The highest temperature recorded in Slidell, Louisiana in 1999 was 98 °F which happened on August 18.

Highest Temperatures: All-Time By Year

Highest Temperatures in Slidell in 1999

Rank	Temperature	Date
1	98 °F	Aug 18
2	95 °F	Aug 28
2	95 °F	Aug 20
2	95 °F	Aug 15
2	95 °F	Aug 7
2	95 °F	Aug 6
2	95 °F	Aug 4
2	95 °F	Aug 3
9	94 °F	Aug 30
9	94 °F	Aug 8

What was the coldest temperature in Slidell in 1999?

The lowest temperature recorded in Slidell, Louisiana in 1999 was 20 °F which happened 2 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Slidell in 1999

Rank	Temperature	Date
1	20 °F	January 11
1	20 °F	January 5
3	23 °F	January 4
4	25 °F	January 10
4	25 °F	January 6
6	27 °F	December 26
6	27 °F	December 16
6	27 °F	February 22
9	29 °F	January 12
9	29 °F	January 3

January 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	68	42	0.00
January 2	70	53	0.96
January 3	56	29	0.26
January 4	43	23	0.00
January 5	39	20	0.00
January 6	47	25	0.00
January 7	62	47	0.11
January 8	65	50	0.05
January 9	72	44	1.50
January 10	47	25	0.00
January 11	50	20	0.00
January 12	55	29	0.00
January 13	68	34	0.00
January 14	73	52	0.00
January 15	n/a	n/a	n/a
January 16	69	35	0.00
January 17	67	50	0.00
January 18	71	59	0.00
January 19	74	40	0.00
January 20	69	43	0.00
January 21	76	63	0.00
January 22	76	65	0.02
January 23	73	54	0.36
January 24	n/a	n/a	n/a
January 25	59	35	0.00
January 26	70	39	0.00
January 27	74	43	0.00
January 28	76	53	0.00
January 29	75	62	0.29
January 30	74	n/a	0.15
January 31	71	49	0.07

February 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	64	47	0.00
February 2	65	49	0.00
February 3	66	49	0.00
February 4	65	52	0.14
February 5	74	47	0.00
February 6	69	50	0.00
February 7	76	58	0.00
February 8	77	63	0.00
February 9	77	60	0.00
February 10	77	64	0.00
February 11	79	64	0.00
February 12	79	41	0.06
February 13	54	31	0.06
February 14	59	34	0.00
February 15	56	32	0.00
February 16	65	43	0.00
February 17	72	52	0.00
February 18	66	49	0.54
February 19	62	47	0.00
February 20	n/a	n/a	0.00
February 21	63	32	0.10
February 22	57	27	0.00
February 23	53	32	0.00
February 24	69	n/a	0.00
February 25	64	37	0.00
February 26	70	44	0.00
February 27	74	53	0.00
February 28	74	51	0.30

March 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	71	42	0.00
March 2	74	46	0.00
March 3	74	46	0.04
March 4	61	32	0.00
March 5	61	40	0.00
March 6	71	61	0.46
March 7	78	n/a	0.00
March 8	62	47	0.00
March 9	68	61	0.74
March 10	76	45	0.00
March 11	70	50	0.00
March 12	71	53	0.00
March 13	66	51	0.06
March 14	69	46	1.74
March 15	50	35	0.00
March 16	62	34	0.00
March 17	67	44	0.00
March 18	73	48	0.00
March 19	75	51	0.00
March 20	76	53	0.00
March 21	76	46	0.00
March 22	69	42	0.00
March 23	67	42	0.00
March 24	72	53	0.00
March 25	78	58	0.01
March 26	72	44	0.02
March 27	64	36	0.00
March 28	64	41	0.00
March 29	70	60	0.00
March 30	71	54	0.44
March 31	64	54	1.62

April 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	66	54	0.00
April 2	75	54	0.00
April 3	76	65	0.00
April 4	78	68	0.00
April 5	77	69	0.01
April 6	79	71	0.01
April 7	83	65	0.00
April 8	83	64	0.00
April 9	83	66	0.00
April 10	84	71	0.00
April 11	84	71	0.00
April 12	84	55	0.00
April 13	83	50	0.00
April 14	76	54	0.00
April 15	78	62	0.00
April 16	77	50	0.00
April 17	67	44	0.00
April 18	68	40	0.00
April 19	69	43	0.00
April 20	77	58	0.00
April 21	80	54	0.00
April 22	78	65	0.00
April 23	81	69	0.00
April 24	84	68	0.00
April 25	89	68	0.00
April 26	85	71	0.00
April 27	83	71	0.00
April 28	84	65	0.00
April 29	89	59	0.00
April 30	89	57	0.03

May 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	73	48	0.00
May 2	77	48	0.00
May 3	78	54	0.00
May 4	n/a	n/a	0.00
May 5	79	66	0.21
May 6	83	74	0.04
May 7	88	62	0.00
May 8	85	52	0.00
May 9	87	55	0.00
May 10	85	60	0.00
May 11	83	62	0.70
May 12	78	64	0.01
May 13	78	65	0.26
May 14	85	62	0.00
May 15	82	61	0.00
May 16	82	63	0.00
May 17	82	63	0.00
May 18	82	63	0.00
May 19	84	66	0.00
May 20	83	63	0.00
May 21	85	60	0.00
May 22	85	62	0.00
May 23	85	70	0.00
May 24	86	66	0.18
May 25	87	60	0.00
May 26	87	71	0.00
May 27	88	67	0.00
May 28	85	65	0.04
May 29	88	67	0.00
May 30	84	67	0.05
May 31	83	65	1.11

June 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	85	66	0.01
June 2	86	68	0.00
June 3	86	68	0.00
June 4	89	70	0.00
June 5	90	70	0.00
June 6	90	68	0.00
June 7	90	68	0.03
June 8	87	68	0.22
June 9	88	68	0.00
June 10	84	66	0.00
June 11	88	69	0.00
June 12	87	67	0.00
June 13	86	70	0.06
June 14	84	71	0.00
June 15	88	70	0.71
June 16	86	69	0.00
June 17	85	71	0.00
June 18	88	66	0.00
June 19	86	61	0.00
June 20	87	67	0.00
June 21	87	68	0.00
June 22	87	68	0.00
June 23	87	72	0.04
June 24	90	75	0.01
June 25	90	76	0.03
June 26	90	72	1.47
June 27	79	72	1.28
June 28	90	75	0.01
June 29	90	79	0.00
June 30	90	77	0.00

July 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	90	77	0.00
July 2	90	75	0.00
July 3	89	72	0.12
July 4	87	71	0.32
July 5	87	72	0.24
July 6	84	71	0.03
July 7	87	70	0.00
July 8	88	71	0.00
July 9	85	71	0.00
July 10	88	73	0.00
July 11	86	74	0.17
July 12	90	71	1.62
July 13	87	70	0.14
July 14	85	66	0.00
July 15	88	68	0.00
July 16	87	69	0.19
July 17	88	71	0.16
July 18	86	70	0.59
July 19	85	70	0.16
July 20	87	70	0.00
July 21	84	69	0.04
July 22	90	72	0.00
July 23	92	74	0.00
July 24	92	73	0.22
July 25	91	71	0.00
July 26	91	76	0.00
July 27	89	71	1.07
July 28	89	71	0.14
July 29	91	72	0.00
July 30	91	79	0.09
July 31	88	75	0.00

August 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	92	76	0.00
August 2	93	63	0.00
August 3	95	73	0.06
August 4	95	74	0.00
August 5	92	74	0.00
August 6	95	75	0.00
August 7	95	76	0.00
August 8	94	73	0.00
August 9	91	77	0.00
August 10	93	73	2.24
August 11	87	65	1.48
August 12	91	78	0.00
August 13	92	77	0.00
August 14	92	77	0.00
August 15	95	69	0.32
August 16	90	68	0.00
August 17	91	74	0.00
August 18	98	76	0.02
August 19	93	77	0.09
August 20	95	74	0.00
August 21	93	72	0.16
August 22	92	74	0.00
August 23	92	74	0.00
August 24	93	74	0.00
August 25	93	75	0.00
August 26	92	74	0.00
August 27	92	76	0.00
August 28	95	72	0.00
August 29	92	71	0.00
August 30	94	72	0.00
August 31	85	71	0.06

September 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	91	71	0.26
September 2	87	73	0.62
September 3	75	70	0.78
September 4	86	70	0.00
September 5	89	71	0.00
September 6	89	76	0.00
September 7	90	69	0.05
September 8	88	69	0.00
September 9	88	69	0.21
September 10	86	64	0.00
September 11	88	57	0.00
September 12	89	65	0.00
September 13	89	65	0.00
September 14	89	68	0.00
September 15	87	66	0.00
September 16	87	61	0.00
September 17	87	n/a	0.00
September 18	86	54	0.00
September 19	89	61	0.00
September 20	89	70	0.00
September 21	87	66	0.00
September 22	86	53	0.00
September 23	76	46	0.00
September 24	80	49	0.00
September 25	80	56	0.00
September 26	80	60	0.00
September 27	85	66	0.00
September 28	87	73	0.01
September 29	84	73	0.05
September 30	84	56	0.00

October 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	84	47	0.00
October 2	79	52	0.00
October 3	84	57	0.00
October 4	87	69	0.01
October 5	85	59	0.01
October 6	80	52	0.00
October 7	85	55	0.00
October 8	79	70	0.01
October 9	79	69	3.00
October 10	80	70	1.79
October 11	74	69	0.35
October 12	85	67	0.00
October 13	82	66	0.00
October 14	83	60	0.00
October 15	85	61	0.00
October 16	83	62	0.00
October 17	84	63	0.00
October 18	84	61	0.00
October 19	75	60	0.00
October 20	74	53	0.07
October 21	69	44	0.00
October 22	71	43	0.00
October 23	75	46	0.00
October 24	70	37	0.00
October 25	63	36	0.00
October 26	69	39	0.00
October 27	72	44	0.00
October 28	77	47	0.00
October 29	77	51	0.00
October 30	78	55	0.00
October 31	76	65	2.14

November 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	71	55	0.32
November 2	74	53	0.00
November 3	64	34	0.00
November 4	62	35	0.00
November 5	69	46	0.00
November 6	72	44	0.00
November 7	74	42	0.00
November 8	76	49	0.00
November 9	76	50	0.00
November 10	76	55	0.00
November 11	77	59	0.00
November 12	79	51	0.00
November 13	75	51	0.00
November 14	76	50	0.00
November 15	73	51	0.00
November 16	72	38	0.00
November 17	68	40	0.00
November 18	67	38	0.00
November 19	69	47	0.00
November 20	74	56	0.00
November 21	74	55	0.00
November 22	75	57	0.00
November 23	75	57	0.00
November 24	76	59	0.00
November 25	69	55	1.31
November 26	58	41	0.10
November 27	59	34	0.00
November 28	65	37	0.00
November 29	71	39	0.00
November 30	71	40	0.00

December 1999 Slidell Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	60	31	0.00
December 2	64	38	0.00
December 3	68	50	0.00
December 4	74	63	0.06
December 5	n/a	n/a	0.20
December 6	66	39	0.00
December 7	53	31	0.00
December 8	57	37	0.00
December 9	65	37	0.00
December 10	74	46	0.01
December 11	58	40	0.00
December 12	66	48	0.00
December 13	75	56	0.90
December 14	57	40	0.00
December 15	61	46	0.00
December 16	58	27	0.00
December 17	58	33	0.00
December 18	66	42	0.00
December 19	52	43	0.72
December 20	50	41	0.02
December 21	58	44	1.32
December 22	50	33	0.00
December 23	56	30	0.00
December 24	58	31	0.00
December 25	60	32	0.00
December 26	52	27	0.00
December 27	56	32	0.00
December 28	63	36	0.00
December 29	53	34	0.00
December 30	62	38	0.00
December 31	69	41	0.00

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Weather Station Details

Years	Station	Coordinates
1956–2024	Slidell	location