Weather Records on 22 September 1999

1,172 weather records were set or tied worldwide on 22 September 1999. Highest significance: Naha, JP.

Key Facts for 22 September 1999

On 22 September 1999, 1,172 weather records were set or tied at long-record stations worldwide.
385 were record highs and 554 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 16 monthly and 1,154 daily.
Naha set an all-time record daily precipitation of 412.0 mm (16.2 in) on 22 September 1999.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 424 records.

Record Map

1,172 stations

1,172 station records on 22 September 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 22 September 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Naha	Japan	Record daily precipitation	412.0 mm (16.2 in)	72 of 100 (Major)
Haines AP	United States	Record daily precipitation	86.9 mm (3.4 in)	62 of 100 (Major)
Little Port Walter	United States	Record daily precipitation	257.0 mm (10.1 in)	60 of 100 (Major)
Brest-Guipavas	France	Record daily precipitation	44.6 mm (1.8 in)	52 of 100 (Notable)
Kitoi Bay	United States	Record daily precipitation	68.3 mm (2.7 in)	51 of 100 (Notable)
Ixcateopan de Tlapa	Mexico	Record daily precipitation	84.8 mm (3.3 in)	50 of 100 (Notable)
Junction 4SSW	United States	Record low minimum temperature	1.1 C (34.0 F)	50 of 100 (Notable)
Barcelos	Portugal	Record daily precipitation	86.0 mm (3.4 in)	48 of 100 (Notable)
Kise Pa Hedmark	Norway	Record daily precipitation	25.6 mm (1.0 in)	47 of 100 (Notable)
Elsinore	United States	Record high minimum temperature	22.8 C (73.0 F)	47 of 100 (Notable)
Jonsberg Landbruksskole	Norway	Record daily precipitation	29.0 mm (1.1 in)	46 of 100 (Notable)
Nyberget	Sweden	Record daily precipitation	38.7 mm (1.5 in)	46 of 100 (Notable)
Tenosique (Smn)	Mexico	Record low minimum temperature	18.3 C (64.9 F)	44 of 100 (Notable)
Benton Harbor AP	United States	Record low minimum temperature	1.1 C (34.0 F)	43 of 100 (Notable)
Waverly	United States	Record low maximum temperature	11.7 C (53.1 F)	43 of 100 (Notable)
Uniontown 1 NE	United States	Record low maximum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Irako	Japan	Record daily precipitation	100.8 mm (4.0 in)	42 of 100 (Notable)
Falun	Sweden	Record daily precipitation	30.3 mm (1.2 in)	42 of 100 (Notable)
Bloomingdale	United States	Record low minimum temperature	-2.2 C (28.0 F)	42 of 100 (Notable)
Lowville	United States	Record low maximum temperature	8.3 C (46.9 F)	42 of 100 (Notable)
Dzerzhinskoe	Russia	Record daily precipitation	25.1 mm (1.0 in)	41 of 100 (Notable)
Lake Alfred Exp STN	United States	Record low maximum temperature	26.1 C (79.0 F)	41 of 100 (Notable)
Farmerville	United States	Record low maximum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Santa Rosa	Mexico	Record low minimum temperature	13.9 C (57.0 F)	40 of 100 (Notable)
Eidsvoll Verk	Norway	Record daily precipitation	29.7 mm (1.2 in)	40 of 100 (Notable)
Durham	United States	Record daily precipitation	61.0 mm (2.4 in)	40 of 100 (Notable)
Cuixtla	Mexico	Record low minimum temperature	12.2 C (54.0 F)	39 of 100 (Notable)
Palestine	United States	Record low minimum temperature	-1.1 C (30.0 F)	39 of 100 (Notable)
Ludington 4 SE	United States	Record low minimum temperature	-1.1 C (30.0 F)	39 of 100 (Notable)
Indian Lake 2SW	United States	Record low maximum temperature	8.3 C (46.9 F)	39 of 100 (Notable)
Watertown	United States	Record low maximum temperature	10.0 C (50.0 F)	39 of 100 (Notable)
Montrose	United States	Record low maximum temperature	9.4 C (48.9 F)	39 of 100 (Notable)
Towanda 1 S	United States	Record low maximum temperature	11.7 C (53.1 F)	39 of 100 (Notable)
Rantoul	United States	Record low maximum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Nord Odal	Norway	Record daily precipitation	30.0 mm (1.2 in)	38 of 100 (Notable)
Palomar Mtn Obsy	United States	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Eastport	United States	Record daily precipitation	63.8 mm (2.5 in)	38 of 100 (Notable)
Quito	Mexico	Record low minimum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Olekminsk	Russia	Record high maximum temperature	21.2 C (70.2 F)	37 of 100 (Notable)
Hayling Island	United Kingdom	Record daily precipitation	32.8 mm (1.3 in)	37 of 100 (Notable)
Addison	United States	Record low maximum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Bolivar	United States	Record low maximum temperature	8.9 C (48.0 F)	37 of 100 (Notable)
La Vega	Mexico	Record low minimum temperature	11.7 C (53.1 F)	36 of 100 (Notable)
Ponte de Lima	Portugal	Record daily precipitation	92.0 mm (3.6 in)	36 of 100 (Notable)
Whitestown	United States	Record low minimum temperature	0.0 C (32.0 F)	36 of 100 (Notable)
Charlevoix	United States	Record low maximum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Albany	United States	Record low minimum temperature	5.0 C (41.0 F)	36 of 100 (Notable)
Colville	United States	Record high maximum temperature	32.2 C (90.0 F)	36 of 100 (Notable)
La Cua	Mexico	Record low minimum temperature	6.7 C (44.1 F)	35 of 100 (Notable)
Presa Centenario	Mexico	Record low minimum temperature	4.4 C (39.9 F)	35 of 100 (Notable)
Morrisville 6 SW	United States	Record low maximum temperature	8.9 C (48.0 F)	35 of 100 (Notable)
Lumberton	United States	Record daily precipitation	44.7 mm (1.8 in)	35 of 100 (Notable)
Longview	United States	Record low minimum temperature	8.3 C (46.9 F)	35 of 100 (Notable)
Warsaw 2 NW	United States	Record low maximum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Wardensville R M Farm	United States	Record low maximum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
El Fuerte	Mexico	Record low minimum temperature	10.0 C (50.0 F)	34 of 100 (Routine)
Jalostotitlan	Mexico	Record low minimum temperature	2.8 C (37.0 F)	34 of 100 (Routine)
Villanueva (Dge)	Mexico	Record low minimum temperature	2.8 C (37.0 F)	34 of 100 (Routine)
Venice	United States	Record low maximum temperature	28.9 C (84.0 F)	34 of 100 (Routine)
Cheraw	United States	Record daily precipitation	41.9 mm (1.6 in)	34 of 100 (Routine)

Counts by Type and Timescale

1,172 records

Records set or tied on 22 September 1999 by type: Highest daily maximum 149, Lowest daily maximum 213, Highest daily minimum 236, Lowest daily minimum 341, Heaviest daily rainfall 233.

Records on 22 September 1999 by type
Record type	Records
Highest daily maximum	149
Lowest daily maximum	213
Highest daily minimum	236
Lowest daily minimum	341
Heaviest daily rainfall	233
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 22 September 1999 by timescale: all-time 2, monthly 16, daily 1,154.

How Much Records Were Beaten By

907 broken records

Margins by which the 907 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 147.0. Ties are not counted.

Top 20 by Significance

22 September 1999

Top 20 records on 22 September 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 September 1999	Naha, JP	all-time rain	412.0 mm (16.2 in)	147.0 mm (5.8 in)	30 years	72 of 100 (Major)
22 September 1999	Haines AP, US	daily rain	86.9 mm (3.4 in)	47.5 mm (1.9 in)	58 years	62 of 100 (Major)
22 September 1999	Little Port Walter, US	daily rain	257.0 mm (10.1 in)	145.7 mm (5.7 in)	48 years	60 of 100 (Major)
22 September 1999	Brest-Guipavas, FR	daily rain	44.6 mm (1.8 in)	24.9 mm (1.0 in)	41 years	52 of 100 (Notable)
22 September 1999	Kitoi Bay, US	daily rain	68.3 mm (2.7 in)	37.1 mm (1.5 in)	44 years	51 of 100 (Notable)
22 September 1999	Ixcateopan de Tlapa, MX	daily rain	84.8 mm (3.3 in)	51.5 mm (2.0 in)	20 years	50 of 100 (Notable)
22 September 1999	Junction 4SSW, US	daily low min	1.1 C (34.0 F)	4.5 C (8.1 F)	101 years	50 of 100 (Notable)
22 September 1999	Barcelos, PT	daily rain	86.0 mm (3.4 in)	62.0 mm (2.4 in)	12 years	48 of 100 (Notable)
22 September 1999	Kise Pa Hedmark, NO	daily rain	25.6 mm (1.0 in)	18.5 mm (0.7 in)	38 years	47 of 100 (Notable)
22 September 1999	Elsinore, US	daily high min	22.8 C (73.0 F)	2.8 C (5.0 F)	101 years	47 of 100 (Notable)
22 September 1999	Jonsberg Landbruksskole, NO	daily rain	29.0 mm (1.1 in)	21.5 mm (0.8 in)	8 years	46 of 100 (Notable)
22 September 1999	Nyberget, SE	daily rain	38.7 mm (1.5 in)	18.5 mm (0.7 in)	45 years	46 of 100 (Notable)
22 September 1999	Tenosique (Smn), MX	daily low min	18.3 C (64.9 F)	1.7 C (3.1 F)	77 years	44 of 100 (Notable)
22 September 1999	Benton Harbor AP, US	daily low min	1.1 C (34.0 F)	1.7 C (3.1 F)	101 years	43 of 100 (Notable)
22 September 1999	Waverly, US	daily low max	11.7 C (53.1 F)	2.7 C (4.9 F)	94 years	43 of 100 (Notable)
22 September 1999	Uniontown 1 NE, US	daily low max	12.8 C (55.0 F)	1.6 C (2.9 F)	102 years	43 of 100 (Notable)
22 September 1999	Irako, JP	daily rain	100.8 mm (4.0 in)	73.5 mm (2.9 in)	40 years	42 of 100 (Notable)
22 September 1999	Falun, SE	daily rain	30.3 mm (1.2 in)	11.7 mm (0.5 in)	45 years	42 of 100 (Notable)
22 September 1999	Bloomingdale, US	daily low min	-2.2 C (28.0 F)	2.8 C (5.0 F)	94 years	42 of 100 (Notable)
22 September 1999	Lowville, US	daily low max	8.3 C (46.9 F)	2.3 C (4.1 F)	94 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

1793 to 1999

Records set or tied on this calendar date in each year from 1793 to 1999. 1999 had 1,172 records.

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

Records on 09-22 in each year
Year	Records
1793	1
1796	1
1824	1
1825	1
1827	1
1830	1
1835	1
1838	1
1840	1
1842	2
1845	1
1846	1
1848	1
1851	3
1855	1
1856	1
1858	1
1863	1
1865	1
1868	1
1872	1
1874	1
1875	1
1877	4
1878	1
1881	2
1882	3
1885	1
1886	1
1888	1
1889	2
1890	2
1892	3
1893	1
1894	1
1895	7
1896	2
1897	3
1898	8
1899	12
1900	3
1901	3
1902	7
1903	4
1904	34
1905	5
1906	16
1907	12
1908	10
1909	6
1910	18
1911	17
1912	17
1913	43
1914	48
1915	23
1916	236
1917	128
1918	25
1919	64
1920	35
1921	44
1922	27
1923	118
1924	132
1925	265
1926	214
1927	160
1928	119
1929	166
1930	231
1931	732
1932	189
1933	230
1934	348
1935	231
1936	448
1937	507
1938	394
1939	266
1940	621
1941	424
1942	323
1943	266
1944	299
1945	739
1946	288
1947	583
1948	345
1949	385
1950	394
1951	419
1952	383
1953	253
1954	359
1955	584
1956	490
1957	580
1958	633
1959	416
1960	360
1961	555
1962	732
1963	351
1964	249
1965	841
1966	595
1967	507
1968	526
1969	488
1970	1,197
1971	500
1972	448
1973	509
1974	1,075
1975	591
1976	538
1977	632
1978	620
1979	991
1980	1,199
1981	754
1982	1,122
1983	2,060
1984	614
1985	820
1986	729
1987	1,300
1988	665
1989	1,155
1990	795
1991	758
1992	1,011
1993	1,448
1994	941
1995	2,498
1996	916
1997	851
1998	1,251
1999	1,172
2000	1,508
2001	604
2002	718
2003	1,472
2004	948
2005	1,155
2006	1,260
2007	896
2008	830
2009	985
2010	1,217
2011	611
2012	568
2013	673
2014	812
2015	666
2016	1,096
2017	1,272
2018	574
2019	651
2020	687
2021	432
2022	985
2023	905
2024	502
2025	387
2026	309

Download the Data

Data for records on 1999-09-22: 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 20	885
20 to 40	14
40 to 60	3
60 to 80	3
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	2