Marrero 9 SSW Threshold Days by Year (USC00165926)

12 fixed thresholds counted per year at Marrero 9 SSW (USC00165926): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Marrero 9 SSW Thresholds

Marrero 9 SSW: days with a maximum temperature at or above 30 C (86 F) in 14 years, most in 2018 with 148.
Marrero 9 SSW: days with a maximum temperature at or above 90 F (32.2 C) in 14 years, most in 1993 with 98.
Marrero 9 SSW: nights with a minimum temperature at or below 0 C (32 F) in 14 years, most in 1997 with 17.
Marrero 9 SSW: nights with a minimum temperature at or above 20 C (68 F) in 14 years, most in 2018 with 161.
12 fixed thresholds have at least one qualifying day at Marrero 9 SSW.

Days at or above 30 C (86 F)

14 years with a qualifying day

Days per year at Marrero 9 SSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 148 in 2018.

Days at or above 30 C (86 F) per year at Marrero 9 SSW
Year	Days	Decade average
1992	124	129.3
1993	139	129.3
1994	139	129.3
1997	118	129.3
1998	127	129.3
1999	129	129.3
2000	128	116.5
2001	110	116.5
2002	116	116.5
2008	112	116.5
2016	116	128.5
2017	112	128.5
2018	148	128.5
2019	138	128.5

For each year, a bar from the first to the last day at Marrero 9 SSW meeting 30 C (86 F).

First to last qualifying date each year at Marrero 9 SSW
Year	First date	Last date
1992	1992-04-14	1992-09-23
1993	1993-05-07	1993-10-21
1994	1994-04-11	1994-10-22
1997	1997-05-10	1997-10-14
1998	1998-05-09	1998-10-19
1999	1999-04-03	1999-10-13
2000	2000-02-27	2000-10-07
2001	2001-04-14	2001-09-23
2002	2002-03-18	2002-10-07
2008	2008-04-12	2008-10-17
2016	2016-05-12	2016-10-18
2017	2017-04-06	2017-10-15
2018	2018-05-07	2018-11-07
2019	2019-05-02	2019-11-08

Every Fixed Threshold

Fixed thresholds at Marrero 9 SSW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	14	148	2018	138
35 C (95 F): Days	13	38	1992	15
90 F (32.2 C): Days	14	98	1993	92
100 F (37.8 C): Days	1	5	1992	5
0 C (32 F): Frost days (min	14	17	1997	7
20 C (68 F): Tropical nights (min	14	161	2018	156
25 C (77 F): Days with min	12	17	2019	17
10 mm (0.39 in): Days with 10 mm or more rain	13	54	1993	41
25 mm (0.98 in): Days with 25 mm or more rain	13	28	1992	20
50 mm (1.97 in): Days with 50 mm or more rain	13	10	2001	6
100 mm (3.94 in): Days with 100 mm or more rain	10	2	1998	1
200 mm (7.87 in): Days with 200 mm or more rain	3	1	1998	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.

Download the Data

Data for Marrero 9 SSW threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Marrero 9 SSW Threshold Days by Year (USC00165926)

Key Facts for Marrero 9 SSW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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