Weather Records on 16 May 1999

778 weather records were set or tied worldwide on 16 May 1999. Highest significance: Castlewood, US.

Key Facts for 16 May 1999

On 16 May 1999, 778 weather records were set or tied at long-record stations worldwide.
308 were record highs and 328 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 26 monthly and 750 daily.
Castlewood set a daily record precipitation of 63.0 mm (2.5 in) on 16 May 1999.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 436 records.

Record Map

778 stations

778 station records on 16 May 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 16 May 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Castlewood	United States	Record daily precipitation	63.0 mm (2.5 in)	80 of 100 (Exceptional)
Santa Rosa de Lima (Camboata)	Brazil	Record daily precipitation	195.0 mm (7.7 in)	70 of 100 (Major)
Makaweli 965	United States	Record daily precipitation	66.0 mm (2.6 in)	70 of 100 (Major)
Oelwein 2 S	United States	Record daily precipitation	111.3 mm (4.4 in)	60 of 100 (Major)
Wilhelmina Rise 721	United States	Record daily precipitation	62.0 mm (2.4 in)	59 of 100 (Notable)
Waterloo Muni AP	United States	Record daily precipitation	77.0 mm (3.0 in)	56 of 100 (Notable)
Rushville	United States	Record daily snowfall	15.2 cm (6.0 in)	52 of 100 (Notable)
Estancia	Brazil	Record daily precipitation	145.6 mm (5.7 in)	51 of 100 (Notable)
Nanchang	China	Record daily precipitation	124.1 mm (4.9 in)	51 of 100 (Notable)
Troitsk	Russia	Record daily precipitation	41.3 mm (1.6 in)	51 of 100 (Notable)
Arco	United States	Record daily snowfall	7.6 cm (3.0 in)	48 of 100 (Notable)
Milan 1NW	United States	Record daily precipitation	29.0 mm (1.1 in)	46 of 100 (Notable)
Burgess Junction	United States	Record daily precipitation	30.5 mm (1.2 in)	46 of 100 (Notable)
Mtunzini	South Africa	Record daily precipitation	75.9 mm (3.0 in)	45 of 100 (Notable)
Dubuque Rgnl AP	United States	Record daily precipitation	60.7 mm (2.4 in)	44 of 100 (Notable)
Sandy Hook	United States	Record low minimum temperature	4.4 C (39.9 F)	43 of 100 (Notable)
Darlington Wwtp	United States	Record daily precipitation	104.9 mm (4.1 in)	43 of 100 (Notable)
Teriberka	Russia	Record low minimum temperature	-7.0 C (19.4 F)	42 of 100 (Notable)
Vanersborg	Sweden	Record low minimum temperature	-1.1 C (30.0 F)	42 of 100 (Notable)
Riverside 7 SSW	United States	Record low minimum temperature	-7.8 C (18.0 F)	42 of 100 (Notable)
Piacabucu	Brazil	Record daily precipitation	80.5 mm (3.2 in)	41 of 100 (Notable)
Titusville	United States	Record low maximum temperature	24.4 C (75.9 F)	41 of 100 (Notable)
Nuevo Rosarito	Mexico	Record low maximum temperature	10.6 C (51.1 F)	40 of 100 (Notable)
Barkestad	Norway	Record daily precipitation	26.5 mm (1.0 in)	40 of 100 (Notable)
Halmstad	Sweden	Record low minimum temperature	0.2 C (32.4 F)	40 of 100 (Notable)
Atlantic 1 NE	United States	Record daily precipitation	63.5 mm (2.5 in)	40 of 100 (Notable)
Madison Wwtp	United States	Record daily precipitation	41.7 mm (1.6 in)	40 of 100 (Notable)
Logan Utah St UNIV	United States	Record low maximum temperature	6.7 C (44.1 F)	40 of 100 (Notable)
J.G.H. van der Wath Airp	Namibia	Record daily precipitation	35.0 mm (1.4 in)	40 of 100 (Notable)
Beulah	United States	Record low minimum temperature	-4.4 C (24.1 F)	39 of 100 (Notable)
Baranovichi	Belarus	Record daily precipitation	41.2 mm (1.6 in)	38 of 100 (Notable)
Greensburg	United States	Record high minimum temperature	18.3 C (64.9 F)	38 of 100 (Notable)
Burgess Junction	United States	Record daily snowfall	25.4 cm (10.0 in)	38 of 100 (Notable)
Thermopolis	United States	Record low maximum temperature	10.0 C (50.0 F)	38 of 100 (Notable)
Kalihi Rsch Site 777	United States	Record daily precipitation	81.3 mm (3.2 in)	38 of 100 (Notable)
Pamplona (Observatorio)	Spain	Record daily precipitation	48.5 mm (1.9 in)	37 of 100 (Notable)
Rushville	United States	Record snow depth	15.2 cm (6.0 in)	37 of 100 (Notable)
Old Faithful	United States	Record daily snowfall	20.3 cm (8.0 in)	37 of 100 (Notable)
Waikiki 717.2	United States	Record daily precipitation	49.3 mm (1.9 in)	37 of 100 (Notable)
Allison	United States	Record daily precipitation	65.3 mm (2.6 in)	36 of 100 (Notable)
Orovada 3 W	United States	Record low minimum temperature	-6.1 C (21.0 F)	36 of 100 (Notable)
Lemmon	United States	Record daily precipitation	32.5 mm (1.3 in)	36 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record low minimum temperature	6.6 C (43.9 F)	35 of 100 (Notable)
Elida	United States	Record high minimum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Elizabeth City	United States	Record low maximum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
South Pass City	United States	Record low minimum temperature	-10.0 C (14.0 F)	35 of 100 (Notable)
Ixmiquilpan (Smn)	Mexico	Record high minimum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Macuspana (Dge)	Mexico	Record high maximum temperature	45.0 C (113.0 F)	34 of 100 (Routine)
Dubois	United States	Record snow depth	10.2 cm (4.0 in)	34 of 100 (Routine)
Tarimoro	Mexico	Record daily precipitation	25.9 mm (1.0 in)	33 of 100 (Routine)
Temilpa	Mexico	Record low minimum temperature	8.9 C (48.0 F)	33 of 100 (Routine)
Tlacotepec	Mexico	Record daily precipitation	73.9 mm (2.9 in)	32 of 100 (Routine)
Kinston 7 SE	United States	Record low maximum temperature	15.0 C (59.0 F)	32 of 100 (Routine)
Lihue WSO AP 1020.1	United States	Record low maximum temperature	23.3 C (73.9 F)	31 of 100 (Routine)
El-Golea	Algeria	Record high minimum temperature	26.8 C (80.2 F)	30 of 100 (Routine)
Petropavlovsk	Kazakhstan	Record high maximum temperature	29.9 C (85.8 F)	30 of 100 (Routine)
Nalut	Libya	Record high minimum temperature	28.0 C (82.4 F)	30 of 100 (Routine)
Vasilevici	Belarus	Record low maximum temperature	11.2 C (52.2 F)	29 of 100 (Routine)
Korf	Russia	Record high minimum temperature	3.4 C (38.1 F)	29 of 100 (Routine)
Hawarden Bridge	United Kingdom	Record high minimum temperature	11.2 C (52.2 F)	29 of 100 (Routine)

Counts by Type and Timescale

778 records

Records set or tied on 16 May 1999 by type: Highest daily maximum 124, Lowest daily maximum 122, Highest daily minimum 184, Lowest daily minimum 206, Heaviest daily rainfall 124, Heaviest daily snowfall 12, Deepest snow cover 6.

Records on 16 May 1999 by type
Record type	Records
Highest daily maximum	124
Lowest daily maximum	122
Highest daily minimum	184
Lowest daily minimum	206
Heaviest daily rainfall	124
Heaviest daily snowfall	12
Deepest snow cover	6

Records on 16 May 1999 by timescale: all-time 2, monthly 26, daily 750.

How Much Records Were Beaten By

574 broken records

Margins by which the 574 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

16 May 1999

Top 20 records on 16 May 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 May 1999	Castlewood, US	daily rain	63.0 mm (2.5 in)	38.9 mm (1.5 in)	102 years	80 of 100 (Exceptional)
16 May 1999	Santa Rosa de Lima (Camboata), BR	all-time rain	195.0 mm (7.7 in)	81.4 mm (3.2 in)	20 years	70 of 100 (Major)
16 May 1999	Makaweli 965, US	daily rain	66.0 mm (2.6 in)	47.2 mm (1.9 in)	72 years	70 of 100 (Major)
16 May 1999	Oelwein 2 S, US	monthly rain	111.3 mm (4.4 in)	32.6 mm (1.3 in)	37 years	60 of 100 (Major)
16 May 1999	Wilhelmina Rise 721, US	daily rain	62.0 mm (2.4 in)	37.1 mm (1.5 in)	48 years	59 of 100 (Notable)
16 May 1999	Waterloo Muni AP, US	daily rain	77.0 mm (3.0 in)	53.6 mm (2.1 in)	38 years	56 of 100 (Notable)
16 May 1999	Rushville, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	56 years	52 of 100 (Notable)
16 May 1999	Estancia, BR	daily rain	145.6 mm (5.7 in)	89.6 mm (3.5 in)	22 years	51 of 100 (Notable)
16 May 1999	Nanchang, CN	daily rain	124.1 mm (4.9 in)	81.6 mm (3.2 in)	25 years	51 of 100 (Notable)
16 May 1999	Troitsk, RU	daily rain	41.3 mm (1.6 in)	28.2 mm (1.1 in)	17 years	51 of 100 (Notable)
16 May 1999	Arco, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	84 years	48 of 100 (Notable)
16 May 1999	Milan 1NW, US	daily rain	29.0 mm (1.1 in)	6.4 mm (0.25 in)	102 years	46 of 100 (Notable)
16 May 1999	Burgess Junction, US	daily rain	30.5 mm (1.2 in)	21.6 mm (0.9 in)	37 years	46 of 100 (Notable)
16 May 1999	Mtunzini, ZA	daily rain	75.9 mm (3.0 in)	45.4 mm (1.8 in)	73 years	45 of 100 (Notable)
16 May 1999	Dubuque Rgnl AP, US	daily rain	60.7 mm (2.4 in)	37.8 mm (1.5 in)	34 years	44 of 100 (Notable)
16 May 1999	Sandy Hook, US	daily low min	4.4 C (39.9 F)	1.2 C (2.2 F)	116 years	43 of 100 (Notable)
16 May 1999	Darlington Wwtp, US	monthly rain	104.9 mm (4.1 in)	19.3 mm (0.8 in)	21 years	43 of 100 (Notable)
16 May 1999	Teriberka, RU	daily low min	-7.0 C (19.4 F)	1.0 C (1.8 F)	96 years	42 of 100 (Notable)
16 May 1999	Vanersborg, SE	daily low min	-1.1 C (30.0 F)	1.1 C (2.0 F)	96 years	42 of 100 (Notable)
16 May 1999	Riverside 7 SSW, US	daily low min	-7.8 C (18.0 F)	2.2 C (4.0 F)	90 years	42 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

1802 to 1999

Records set or tied on this calendar date in each year from 1802 to 1999. 1999 had 778 records.

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

Records on 05-16 in each year
Year	Records
1802	1
1806	1
1820	1
1825	1
1832	1
1837	1
1847	1
1856	1
1858	1
1861	1
1862	1
1863	1
1864	1
1866	1
1867	2
1871	1
1874	3
1878	1
1879	1
1880	1
1881	1
1882	1
1883	1
1884	1
1885	1
1886	1
1887	2
1888	2
1889	2
1890	1
1891	4
1892	3
1893	1
1894	2
1895	6
1896	2
1897	1
1898	11
1899	6
1900	7
1901	2
1902	10
1903	9
1904	17
1905	13
1906	25
1907	13
1908	6
1909	57
1910	24
1911	22
1912	13
1913	24
1914	11
1915	104
1916	38
1917	48
1918	395
1919	28
1920	69
1921	106
1922	31
1923	126
1924	152
1925	177
1926	211
1927	230
1928	121
1929	273
1930	170
1931	254
1932	441
1933	268
1934	304
1935	320
1936	520
1937	279
1938	299
1939	448
1940	334
1941	429
1942	721
1943	652
1944	531
1945	888
1946	327
1947	344
1948	281
1949	360
1950	210
1951	558
1952	773
1953	421
1954	251
1955	525
1956	697
1957	610
1958	361
1959	680
1960	370
1961	378
1962	1,295
1963	552
1964	313
1965	442
1966	420
1967	611
1968	790
1969	423
1970	520
1971	509
1972	625
1973	869
1974	1,207
1975	544
1976	518
1977	1,269
1978	808
1979	506
1980	830
1981	896
1982	427
1983	1,579
1984	981
1985	536
1986	747
1987	1,369
1988	946
1989	938
1990	1,068
1991	1,094
1992	809
1993	653
1994	705
1995	1,235
1996	1,835
1997	1,932
1998	1,500
1999	778
2000	1,129
2001	1,110
2002	694
2003	1,289
2004	869
2005	870
2006	1,345
2007	692
2008	1,034
2009	897
2010	836
2011	1,398
2012	770
2013	596
2014	1,483
2015	782
2016	793
2017	710
2018	1,013
2019	572
2020	431
2021	419
2022	717
2023	653
2024	601
2025	993
2026	558

Download the Data

Data for records on 1999-05-16: 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	566
100 to 200	6
200 to 300	1
300 to 400	0
400 to 500	1