Weather Records on 11 May 1999

1,052 weather records were set or tied worldwide on 11 May 1999. Highest significance: Cooroy Composite, AU.

Key Facts for 11 May 1999

On 11 May 1999, 1,052 weather records were set or tied at long-record stations worldwide.
225 were record highs and 500 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 23 monthly and 1,028 daily.
Cooroy Composite set a daily record precipitation of 146.6 mm (5.8 in) on 11 May 1999.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 460 records.

Record Map

1,052 stations

1,052 station records on 11 May 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cooroy Composite	Australia	Record daily precipitation	146.6 mm (5.8 in)	70 of 100 (Major)
Como	Australia	Record daily precipitation	153.4 mm (6.0 in)	59 of 100 (Notable)
Nambour Bowling Club	Australia	Record daily precipitation	85.6 mm (3.4 in)	59 of 100 (Notable)
Theebine	Australia	Record daily precipitation	60.6 mm (2.4 in)	57 of 100 (Notable)
Sandy Cape Lighthouse	Australia	Record daily precipitation	148.0 mm (5.8 in)	56 of 100 (Notable)
Goomboorian	Australia	Record daily precipitation	101.0 mm (4.0 in)	56 of 100 (Notable)
Double Island Point Lighthouse	Australia	Record daily precipitation	97.0 mm (3.8 in)	55 of 100 (Notable)
Amamoor Forestry	Australia	Record daily precipitation	70.0 mm (2.8 in)	54 of 100 (Notable)
Conondale Township	Australia	Record daily precipitation	80.2 mm (3.2 in)	54 of 100 (Notable)
Bauple	Australia	Record daily precipitation	60.0 mm (2.4 in)	53 of 100 (Notable)
Basel-Mulhouse	France	Record daily precipitation	40.4 mm (1.6 in)	53 of 100 (Notable)
Pomona Post Office	Australia	Record daily precipitation	122.0 mm (4.8 in)	51 of 100 (Notable)
Mohall	United States	Record daily precipitation	41.9 mm (1.6 in)	51 of 100 (Notable)
Beach	United States	Record daily snowfall	16.5 cm (6.5 in)	50 of 100 (Notable)
Traveston	Australia	Record daily precipitation	114.4 mm (4.5 in)	49 of 100 (Notable)
Yandina Post Office	Australia	Record daily precipitation	87.0 mm (3.4 in)	49 of 100 (Notable)
Rheinfelden	Germany	Record daily precipitation	41.4 mm (1.6 in)	49 of 100 (Notable)
Seaside	United States	Record daily precipitation	48.3 mm (1.9 in)	49 of 100 (Notable)
Friesoythe-Edewechterdam	Germany	Record daily precipitation	32.5 mm (1.3 in)	48 of 100 (Notable)
Bernburg/Saale (Nord)	Germany	Record daily precipitation	26.4 mm (1.0 in)	48 of 100 (Notable)
Basel Binningen	Switzerland	Record daily precipitation	35.7 mm (1.4 in)	48 of 100 (Notable)
Ekalaka	United States	Record daily snowfall	6.4 cm (2.5 in)	48 of 100 (Notable)
Cando 1E	United States	Record daily precipitation	34.3 mm (1.4 in)	48 of 100 (Notable)
Mungar Junction	Australia	Record daily precipitation	55.0 mm (2.2 in)	47 of 100 (Notable)
Old Faithful	United States	Record low minimum temperature	-12.8 C (9.0 F)	47 of 100 (Notable)
Glentana	Australia	Record daily precipitation	77.0 mm (3.0 in)	46 of 100 (Notable)
Birraban	Australia	Record daily precipitation	60.0 mm (2.4 in)	46 of 100 (Notable)
Kremmling	United States	Record low maximum temperature	1.7 C (35.1 F)	46 of 100 (Notable)
Watford City	United States	Record daily snowfall	6.4 cm (2.5 in)	46 of 100 (Notable)
Teddington Waterworks	Australia	Record daily precipitation	61.8 mm (2.4 in)	45 of 100 (Notable)
Boras	Sweden	Record low maximum temperature	3.8 C (38.8 F)	45 of 100 (Notable)
Eumundi - Crescent Rd	Australia	Record daily precipitation	127.8 mm (5.0 in)	43 of 100 (Notable)
Palmwoods	Australia	Record daily precipitation	95.0 mm (3.7 in)	43 of 100 (Notable)
Vanersborg	Sweden	Record low maximum temperature	4.4 C (39.9 F)	43 of 100 (Notable)
Foxholm 7 N	United States	Record daily precipitation	28.4 mm (1.1 in)	43 of 100 (Notable)
Climax	United States	Record low maximum temperature	-2.2 C (28.0 F)	42 of 100 (Notable)
Riverside 7 SSW	United States	Record low minimum temperature	-8.9 C (16.0 F)	42 of 100 (Notable)
Springsure Comet St	Australia	Record daily precipitation	52.5 mm (2.1 in)	41 of 100 (Notable)
Landsborough Post Office	Australia	Record daily precipitation	61.8 mm (2.4 in)	41 of 100 (Notable)
Halmstad	Sweden	Record low maximum temperature	7.4 C (45.3 F)	41 of 100 (Notable)
Skara 1	Sweden	Record low maximum temperature	5.4 C (41.7 F)	41 of 100 (Notable)
Ambrose 3 N	United States	Record daily precipitation	38.4 mm (1.5 in)	41 of 100 (Notable)
Snake Creek Powerhouse	United States	Record low minimum temperature	-8.3 C (17.1 F)	41 of 100 (Notable)
Maryborough	Australia	Record daily precipitation	65.0 mm (2.6 in)	40 of 100 (Notable)
Nambour Dpi	Australia	Record daily precipitation	87.4 mm (3.4 in)	40 of 100 (Notable)
Gympie	Australia	Record daily precipitation	60.4 mm (2.4 in)	39 of 100 (Notable)
Mt Mee	Australia	Record daily precipitation	77.0 mm (3.0 in)	39 of 100 (Notable)
Sveg	Sweden	Record low maximum temperature	2.8 C (37.0 F)	39 of 100 (Notable)
Abbeville	United States	Record daily precipitation	118.1 mm (4.6 in)	39 of 100 (Notable)
Glendive	United States	Record daily precipitation	32.5 mm (1.3 in)	39 of 100 (Notable)
Green Rvr	United States	Record low minimum temperature	-7.2 C (19.0 F)	39 of 100 (Notable)
Palestine	United States	Record high maximum temperature	31.1 C (88.0 F)	38 of 100 (Notable)
Barneston	United States	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Amidon	United States	Record daily snowfall	10.2 cm (4.0 in)	38 of 100 (Notable)
Richland Springs	United States	Record daily precipitation	74.7 mm (2.9 in)	38 of 100 (Notable)
Childers Post Office	Australia	Record daily precipitation	58.6 mm (2.3 in)	37 of 100 (Notable)
Augathella Post Office	Australia	Record daily precipitation	46.8 mm (1.8 in)	37 of 100 (Notable)
Sisimiut	Greenland [Denmark]	Record daily precipitation	60.0 mm (2.4 in)	37 of 100 (Notable)
Saint Maries	United States	Record low minimum temperature	-2.2 C (28.0 F)	37 of 100 (Notable)
Anaconda	United States	Record low minimum temperature	-6.1 C (21.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

1,052 records

Records set or tied on 11 May 1999 by type: Highest daily maximum 116, Lowest daily maximum 243, Highest daily minimum 109, Lowest daily minimum 257, Heaviest daily rainfall 280, Heaviest daily snowfall 27, Deepest snow cover 20.

Records on 11 May 1999 by type
Record type	Records
Highest daily maximum	116
Lowest daily maximum	243
Highest daily minimum	109
Lowest daily minimum	257
Heaviest daily rainfall	280
Heaviest daily snowfall	27
Deepest snow cover	20

Records on 11 May 1999 by timescale: all-time 1, monthly 23, daily 1,028.

How Much Records Were Beaten By

857 broken records

Margins by which the 857 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 457.0. Ties are not counted.

Top 20 by Significance

11 May 1999

Top 20 records on 11 May 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1999	Cooroy Composite, AU	daily rain	146.6 mm (5.8 in)	101.6 mm (4.0 in)	68 years	70 of 100 (Major)
11 May 1999	Como, AU	daily rain	153.4 mm (6.0 in)	129.5 mm (5.1 in)	44 years	59 of 100 (Notable)
11 May 1999	Nambour Bowling Club, AU	daily rain	85.6 mm (3.4 in)	45.0 mm (1.8 in)	94 years	59 of 100 (Notable)
11 May 1999	Theebine, AU	daily rain	60.6 mm (2.4 in)	37.7 mm (1.5 in)	84 years	57 of 100 (Notable)
11 May 1999	Sandy Cape Lighthouse, AU	daily rain	148.0 mm (5.8 in)	92.6 mm (3.6 in)	20 years	56 of 100 (Notable)
11 May 1999	Goomboorian, AU	daily rain	101.0 mm (4.0 in)	62.1 mm (2.4 in)	29 years	56 of 100 (Notable)
11 May 1999	Double Island Point Lighthouse, AU	daily rain	97.0 mm (3.8 in)	23.6 mm (0.9 in)	107 years	55 of 100 (Notable)
11 May 1999	Amamoor Forestry, AU	daily rain	70.0 mm (2.8 in)	56.3 mm (2.2 in)	29 years	54 of 100 (Notable)
11 May 1999	Conondale Township, AU	daily rain	80.2 mm (3.2 in)	59.6 mm (2.3 in)	29 years	54 of 100 (Notable)
11 May 1999	Bauple, AU	daily rain	60.0 mm (2.4 in)	40.4 mm (1.6 in)	46 years	53 of 100 (Notable)
11 May 1999	Basel-Mulhouse, FR	daily rain	40.4 mm (1.6 in)	24.9 mm (1.0 in)	30 years	53 of 100 (Notable)
11 May 1999	Pomona Post Office, AU	daily rain	122.0 mm (4.8 in)	87.8 mm (3.5 in)	12 years	51 of 100 (Notable)
11 May 1999	Mohall, US	daily rain	41.9 mm (1.6 in)	16.5 mm (0.6 in)	80 years	51 of 100 (Notable)
11 May 1999	Beach, US	daily snowfall	16.5 cm (6.5 in)	14.0 cm (5.5 in)	45 years	50 of 100 (Notable)
11 May 1999	Traveston, AU	daily rain	114.4 mm (4.5 in)	73.2 mm (2.9 in)	12 years	49 of 100 (Notable)
11 May 1999	Yandina Post Office, AU	daily rain	87.0 mm (3.4 in)	43.6 mm (1.7 in)	68 years	49 of 100 (Notable)
11 May 1999	Rheinfelden, DE	daily rain	41.4 mm (1.6 in)	26.3 mm (1.0 in)	30 years	49 of 100 (Notable)
11 May 1999	Seaside, US	daily rain	48.3 mm (1.9 in)	28.0 mm (1.1 in)	14 years	49 of 100 (Notable)
11 May 1999	Friesoythe-Edewechterdam, DE	daily rain	32.5 mm (1.3 in)	19.8 mm (0.8 in)	12 years	48 of 100 (Notable)
11 May 1999	Bernburg/Saale (Nord), DE	daily rain	26.4 mm (1.0 in)	5.0 mm (0.20 in)	99 years	48 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 1999

Records set or tied on this calendar date in each year from 1814 to 1999. 1999 had 1,052 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 1999-05-11: 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 100	851
100 to 200	4
200 to 300	1
300 to 400	0
400 to 500	1