Norman Manley Intl Threshold Days by Year (JMM00078397)

10 fixed thresholds counted per year at Norman Manley Intl (JMM00078397): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Norman Manley Intl Thresholds

Norman Manley Intl: days with a maximum temperature at or above 30 C (86 F) in 16 years, most in 1990 with 355.
Norman Manley Intl: days with a maximum temperature at or above 35 C (95 F) in 16 years, most in 1987 with 19.
Norman Manley Intl: days with a maximum temperature at or above 90 F (32.2 C) in 16 years, most in 1990 with 237.
Norman Manley Intl: nights with a minimum temperature at or above 20 C (68 F) in 16 years, most in 1992 with 355.
10 fixed thresholds have at least one qualifying day at Norman Manley Intl.

Days at or above 30 C (86 F)

16 years with a qualifying day

Days per year at Norman Manley Intl with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 355 in 1990.

Days at or above 30 C (86 F) per year at Norman Manley Intl
Year	Days	Decade average
1984	327	331.5
1985	325	331.5
1986	324	331.5
1987	339	331.5
1988	333	331.5
1989	341	331.5
1990	355	347
1991	353	347
1992	333	347
2000	342	337.5
2001	333	337.5
2017	318	327.7
2018	329	327.7
2019	336	327.7
2020	339	278.5
2025	218	278.5

For each year, a bar from the first to the last day at Norman Manley Intl meeting 30 C (86 F).

First to last qualifying date each year at Norman Manley Intl
Year	First date	Last date
1984	1984-01-01	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-31
1990	1990-01-01	1990-12-30
1991	1991-01-01	1991-12-31
1992	1992-01-01	1992-12-31
2000	2000-01-01	2000-12-31
2001	2001-01-01	2001-12-31
2017	2017-01-01	2017-12-31
2018	2018-01-01	2018-12-31
2019	2019-01-01	2019-12-31
2020	2020-01-01	2020-12-31
2025	2025-01-01	2025-08-24

Every Fixed Threshold

Fixed thresholds at Norman Manley Intl
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	16	355	1990	218
35 C (95 F): Days	16	19	1987	3
90 F (32.2 C): Days	16	237	1990	150
20 C (68 F): Tropical nights (min	16	355	1992	216
25 C (77 F): Days with min	16	130	2001	9
10 mm (0.39 in): Days with 10 mm or more rain	8	27	2017	4
25 mm (0.98 in): Days with 25 mm or more rain	7	12	2020	12
50 mm (1.97 in): Days with 50 mm or more rain	6	6	2017	5
100 mm (3.94 in): Days with 100 mm or more rain	5	1	2017	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	2019	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1984.

Download the Data

Data for Norman Manley Intl 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).

Norman Manley Intl Threshold Days by Year (JMM00078397)

Key Facts for Norman Manley Intl Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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