Weather Records on 11 May 1984

666 weather records were set or tied worldwide on 11 May 1984. Highest significance: Tianjin, CN.

Key Facts for 11 May 1984

On 11 May 1984, 666 weather records were set or tied at long-record stations worldwide.
287 were record highs and 227 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 653 daily.
Tianjin set a monthly record daily precipitation of 61.7 mm (2.4 in) on 11 May 1984.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 462 records.

Record Map

666 stations

666 station records on 11 May 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tianjin	China	Record daily precipitation	61.7 mm (2.4 in)	56 of 100 (Notable)
Barcelona/Aeropuerto	Spain	Record daily precipitation	64.6 mm (2.5 in)	54 of 100 (Notable)
Zimnegorskij Majak	Russia	Record daily precipitation	40.4 mm (1.6 in)	45 of 100 (Notable)
Adin Rs	United States	Record high minimum temperature	11.1 C (52.0 F)	45 of 100 (Notable)
Bilasuvar	Azerbaijan	Record daily precipitation	29.6 mm (1.2 in)	44 of 100 (Notable)
Grand Lake 6 SSW	United States	Record snow depth	43.2 cm (17.0 in)	44 of 100 (Notable)
Carson City	United States	Record high minimum temperature	14.4 C (57.9 F)	44 of 100 (Notable)
Taiyuan	China	Record daily precipitation	30.8 mm (1.2 in)	42 of 100 (Notable)
Tierra Blanca (Smn)	Mexico	Record low maximum temperature	26.7 C (80.1 F)	41 of 100 (Notable)
Klamath	United States	Record daily precipitation	74.7 mm (2.9 in)	41 of 100 (Notable)
Shusha	Azerbaijan	Record daily precipitation	44.3 mm (1.7 in)	40 of 100 (Notable)
Vanersborg	Sweden	Record low minimum temperature	-3.4 C (25.9 F)	40 of 100 (Notable)
Khankandy	Azerbaijan	Record daily precipitation	37.9 mm (1.5 in)	39 of 100 (Notable)
Hope	United States	Record high maximum temperature	42.8 C (109.0 F)	38 of 100 (Notable)
Socorro	United States	Record high minimum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Key West NAS	United States	Record daily precipitation	70.6 mm (2.8 in)	37 of 100 (Notable)
Barcelona -Fabra Observatory	Spain	Record daily precipitation	43.6 mm (1.7 in)	36 of 100 (Notable)
Lampang	Thailand	Record low maximum temperature	22.9 C (73.2 F)	36 of 100 (Notable)
Independence	United States	Record high minimum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Orleans	United States	Record daily precipitation	40.9 mm (1.6 in)	35 of 100 (Notable)
Titusville	United States	Record low maximum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Jiexiu	China	Record daily precipitation	29.3 mm (1.2 in)	34 of 100 (Routine)
Felipe Carrillo Puerto (Obs)	Mexico	Record daily precipitation	44.0 mm (1.7 in)	34 of 100 (Routine)
Tuzantla (Smn)	Mexico	Record low maximum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Felipe Carrillo Puerto (Dge)	Mexico	Record daily precipitation	43.9 mm (1.7 in)	34 of 100 (Routine)
Golconda	United States	Record high minimum temperature	12.8 C (55.0 F)	34 of 100 (Routine)
Raymond	United States	Record daily precipitation	33.3 mm (1.3 in)	34 of 100 (Routine)
Miahuatlan (Dge)	Mexico	Record low maximum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Truckee Rs	United States	Record high minimum temperature	7.2 C (45.0 F)	33 of 100 (Routine)
Blanca 4 NW	United States	Record high minimum temperature	8.3 C (46.9 F)	33 of 100 (Routine)
Nanchong	China	Record daily precipitation	49.6 mm (2.0 in)	32 of 100 (Routine)
Arecibo 3 ESE	Puerto Rico [United States]	Record low minimum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Capitan	United States	Record high maximum temperature	31.1 C (88.0 F)	32 of 100 (Routine)
Waialua 847	United States	Record high maximum temperature	30.6 C (87.1 F)	32 of 100 (Routine)
Tartu-Toravere	Estonia	Record low minimum temperature	-3.9 C (25.0 F)	30 of 100 (Routine)
Verhojansk	Russia	Record high maximum temperature	18.6 C (65.5 F)	30 of 100 (Routine)
Perm	Russia	Record high minimum temperature	13.1 C (55.6 F)	30 of 100 (Routine)
Yerington	United States	Record high minimum temperature	12.8 C (55.0 F)	30 of 100 (Routine)
Elephant Butte Dam	United States	Record high maximum temperature	33.9 C (93.0 F)	30 of 100 (Routine)
Antonio Prado	Brazil	Record daily precipitation	70.0 mm (2.8 in)	29 of 100 (Routine)
Siwa	Egypt	Record high minimum temperature	22.5 C (72.5 F)	29 of 100 (Routine)
Steigen	Norway	Record daily precipitation	33.5 mm (1.3 in)	29 of 100 (Routine)
Canyon Dam	United States	Record high minimum temperature	9.4 C (48.9 F)	29 of 100 (Routine)
Reno AP	United States	Record high minimum temperature	11.1 C (52.0 F)	29 of 100 (Routine)
Hemse	Sweden	Record low minimum temperature	-5.3 C (22.5 F)	28 of 100 (Routine)
Hat Creek	United States	Record high minimum temperature	13.3 C (55.9 F)	28 of 100 (Routine)
Portola	United States	Record high minimum temperature	11.1 C (52.0 F)	28 of 100 (Routine)
Trout Lake	United States	Record snow depth	132.1 cm (52.0 in)	28 of 100 (Routine)
Leadville Lake Co AP	United States	Record snow depth	22.9 cm (9.0 in)	28 of 100 (Routine)
Encantado	Brazil	Record daily precipitation	50.0 mm (2.0 in)	27 of 100 (Routine)
Le Bourget	France	Record low maximum temperature	8.4 C (47.1 F)	27 of 100 (Routine)
Troicko-Pecherskoe	Russia	Record high maximum temperature	23.5 C (74.3 F)	27 of 100 (Routine)
Tahoe City	United States	Record high minimum temperature	5.6 C (42.1 F)	27 of 100 (Routine)
Glenbrook	United States	Record high minimum temperature	10.6 C (51.1 F)	27 of 100 (Routine)
Tularosa	United States	Record high maximum temperature	34.4 C (93.9 F)	27 of 100 (Routine)
Puyallup 2 W Exp STN	United States	Record low minimum temperature	-4.4 C (24.1 F)	27 of 100 (Routine)
Dijon-Longvic	France	Record low maximum temperature	8.0 C (46.4 F)	26 of 100 (Routine)
Pixoyal (Smn)	Mexico	Record daily precipitation	57.4 mm (2.3 in)	26 of 100 (Routine)
Canelo 1 NW	United States	Record high minimum temperature	17.8 C (64.0 F)	26 of 100 (Routine)
High Springs	United States	Record low minimum temperature	5.6 C (42.1 F)	26 of 100 (Routine)

Counts by Type and Timescale

666 records

Records set or tied on 11 May 1984 by type: Highest daily maximum 131, Lowest daily maximum 97, Highest daily minimum 156, Lowest daily minimum 130, Heaviest daily rainfall 143, Heaviest daily snowfall 2, Deepest snow cover 7.

Records on 11 May 1984 by type
Record type	Records
Highest daily maximum	131
Lowest daily maximum	97
Highest daily minimum	156
Lowest daily minimum	130
Heaviest daily rainfall	143
Heaviest daily snowfall	2
Deepest snow cover	7

Records on 11 May 1984 by timescale: all-time 0, monthly 13, daily 653.

How Much Records Were Beaten By

518 broken records

Margins by which the 518 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

11 May 1984

Top 20 records on 11 May 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1984	Tianjin, CN	monthly rain	61.7 mm (2.4 in)	28.8 mm (1.1 in)	11 years	56 of 100 (Notable)
11 May 1984	Barcelona/Aeropuerto, ES	daily rain	64.6 mm (2.5 in)	47.7 mm (1.9 in)	33 years	54 of 100 (Notable)
11 May 1984	Zimnegorskij Majak, RU	daily rain	40.4 mm (1.6 in)	28.6 mm (1.1 in)	5 years	45 of 100 (Notable)
11 May 1984	Adin Rs, US	daily high min	11.1 C (52.0 F)	3.9 C (7.0 F)	86 years	45 of 100 (Notable)
11 May 1984	Bilasuvar, AZ	daily rain	29.6 mm (1.2 in)	16.6 mm (0.7 in)	36 years	44 of 100 (Notable)
11 May 1984	Grand Lake 6 SSW, US	daily snow depth	43.2 cm (17.0 in)	35.6 cm (14.0 in)	5 years	44 of 100 (Notable)
11 May 1984	Carson City, US	daily high min	14.4 C (57.9 F)	3.8 C (6.8 F)	84 years	44 of 100 (Notable)
11 May 1984	Taiyuan, CN	daily rain	30.8 mm (1.2 in)	23.4 mm (0.9 in)	32 years	42 of 100 (Notable)
11 May 1984	Tierra Blanca (Smn), MX	daily low max	26.7 C (80.1 F)	5.0 C (9.0 F)	60 years	41 of 100 (Notable)
11 May 1984	Klamath, US	daily rain	74.7 mm (2.9 in)	49.3 mm (1.9 in)	14 years	41 of 100 (Notable)
11 May 1984	Shusha, AZ	daily rain	44.3 mm (1.7 in)	23.7 mm (0.9 in)	21 years	40 of 100 (Notable)
11 May 1984	Vanersborg, SE	daily low min	-3.4 C (25.9 F)	0.4 C (0.7 F)	96 years	40 of 100 (Notable)
11 May 1984	Khankandy, AZ	daily rain	37.9 mm (1.5 in)	24.8 mm (1.0 in)	18 years	39 of 100 (Notable)
11 May 1984	Hope, US	monthly high max	42.8 C (109.0 F)	4.5 C (8.1 F)	45 years	38 of 100 (Notable)
11 May 1984	Socorro, US	daily high min	17.8 C (64.0 F)	1.7 C (3.1 F)	84 years	38 of 100 (Notable)
11 May 1984	Key West NAS, US	daily rain	70.6 mm (2.8 in)	52.6 mm (2.1 in)	7 years	37 of 100 (Notable)
11 May 1984	Barcelona -Fabra Observatory, ES	daily rain	43.6 mm (1.7 in)	18.8 mm (0.7 in)	33 years	36 of 100 (Notable)
11 May 1984	Lampang, TH	daily low max	22.9 C (73.2 F)	8.9 C (16.0 F)	16 years	36 of 100 (Notable)
11 May 1984	Independence, US	daily high min	17.2 C (63.0 F)	1.1 C (2.0 F)	81 years	35 of 100 (Notable)
11 May 1984	Orleans, US	daily rain	40.9 mm (1.6 in)	18.0 mm (0.7 in)	17 years	35 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1814 to 1984

Records set or tied on this calendar date in each year from 1814 to 1984. 1984 had 666 records.

Counts for years before the ledger starts come from the same station rules.

Records on 05-11 in each year
Year	Records
1814	3
1832	1
1836	3
1837	1
1838	1
1848	2
1856	1
1860	2
1865	1
1867	1
1869	1
1872	1
1874	2
1879	2
1880	1
1881	5
1883	3
1884	2
1885	1
1886	2
1887	1
1888	1
1889	2
1892	1
1893	3
1894	2
1895	4
1896	3
1897	6
1898	5
1900	7
1901	9
1902	6
1903	7
1904	6
1905	12
1906	21
1907	44
1908	9
1909	12
1910	16
1911	99
1912	21
1913	20
1914	20
1915	16
1916	22
1917	40
1918	54
1919	56
1920	181
1921	58
1922	61
1923	111
1924	239
1925	410
1926	472
1927	318
1928	252
1929	126
1930	380
1931	254
1932	170
1933	429
1934	332
1935	276
1936	363
1937	170
1938	141
1939	213
1940	340
1941	411
1942	389
1943	646
1944	408
1945	483
1946	747
1947	480
1948	407
1949	451
1950	285
1951	395
1952	629
1953	686
1954	492
1955	235
1956	942
1957	439
1958	499
1959	575
1960	809
1961	663
1962	670
1963	984
1964	299
1965	356
1966	992
1967	974
1968	909
1969	349
1970	764
1971	565
1972	673
1973	429
1974	795
1975	383
1976	509
1977	836
1978	1,070
1979	1,239
1980	693
1981	1,298
1982	624
1983	930
1984	666
1985	835
1986	684
1987	1,247
1988	485
1989	952
1990	935
1991	990
1992	728
1993	1,088
1994	633
1995	1,244
1996	1,088
1997	1,033
1998	1,315
1999	1,052
2000	1,286
2001	848
2002	845
2003	1,321
2004	834
2005	944
2006	822
2007	833
2008	1,015
2009	605
2010	1,292
2011	1,414
2012	1,181
2013	615
2014	662
2015	1,038
2016	497
2017	546
2018	988
2019	915
2020	1,068
2021	590
2022	1,470
2023	390
2024	579
2025	1,104
2026	797

Download the Data

Data for records on 1984-05-11: CSV or JSON. Field meanings are on the data page.

Sources: 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)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	512
50 to 100	1
100 to 150	1
150 to 200	1
200 to 250	1
250 to 300	0
300 to 350	1
350 to 400	1