Weather Records on 21 September 1999

1,025 weather records were set or tied worldwide on 21 September 1999. Highest significance: Nabawa, AU.

Key Facts for 21 September 1999

On 21 September 1999, 1,025 weather records were set or tied at long-record stations worldwide.
376 were record highs and 398 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 35 monthly and 990 daily.
Nabawa set a monthly record daily precipitation of 49.6 mm (2.0 in) on 21 September 1999.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 447 records.

Record Map

1,025 stations

1,025 station records on 21 September 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nabawa	Australia	Record daily precipitation	49.6 mm (2.0 in)	65 of 100 (Major)
Ajana	Australia	Record daily precipitation	33.0 mm (1.3 in)	64 of 100 (Major)
Strawberry North	Australia	Record daily precipitation	33.0 mm (1.3 in)	64 of 100 (Major)
Willigulli North	Australia	Record daily precipitation	48.2 mm (1.9 in)	63 of 100 (Major)
Manarra	Australia	Record daily precipitation	33.0 mm (1.3 in)	57 of 100 (Notable)
Ogilvie	Australia	Record daily precipitation	31.0 mm (1.2 in)	57 of 100 (Notable)
Byron	Australia	Record daily precipitation	43.0 mm (1.7 in)	57 of 100 (Notable)
Pindawa	Australia	Record daily precipitation	36.6 mm (1.4 in)	56 of 100 (Notable)
Mellenbye	Australia	Record daily precipitation	25.6 mm (1.0 in)	56 of 100 (Notable)
Mullewa	Australia	Record daily precipitation	30.0 mm (1.2 in)	55 of 100 (Notable)
Coolangatta	Australia	Record daily precipitation	38.0 mm (1.5 in)	55 of 100 (Notable)
Tenindewa Bindu	Australia	Record daily precipitation	41.0 mm (1.6 in)	54 of 100 (Notable)
Yarragadee	Australia	Record daily precipitation	37.0 mm (1.5 in)	54 of 100 (Notable)
Howatharra	Australia	Record daily precipitation	53.0 mm (2.1 in)	53 of 100 (Notable)
Northampton	Australia	Record daily precipitation	45.8 mm (1.8 in)	51 of 100 (Notable)
Yuna	Australia	Record daily precipitation	37.2 mm (1.5 in)	49 of 100 (Notable)
Eradu	Australia	Record daily precipitation	44.8 mm (1.8 in)	49 of 100 (Notable)
Tezpur	India	Record daily precipitation	122.9 mm (4.8 in)	49 of 100 (Notable)
Yulin	China	Record daily precipitation	45.8 mm (1.8 in)	48 of 100 (Notable)
Nara	Japan	Record daily precipitation	83.1 mm (3.3 in)	48 of 100 (Notable)
Sandefjord	Norway	Record daily precipitation	49.0 mm (1.9 in)	47 of 100 (Notable)
San Juanillo	Mexico	Record daily precipitation	138.9 mm (5.5 in)	46 of 100 (Notable)
Everglades	United States	Record daily precipitation	139.7 mm (5.5 in)	45 of 100 (Notable)
Binnu	Australia	Record daily precipitation	30.4 mm (1.2 in)	44 of 100 (Notable)
Isseka	Australia	Record daily precipitation	43.6 mm (1.7 in)	44 of 100 (Notable)
Lifjell	Norway	Record daily precipitation	33.3 mm (1.3 in)	44 of 100 (Notable)
Lynton	Australia	Record daily precipitation	40.4 mm (1.6 in)	43 of 100 (Notable)
Karuizawa	Japan	Record daily precipitation	93.0 mm (3.7 in)	43 of 100 (Notable)
Tucson Camp Ave Exp	United States	Record high minimum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record high minimum temperature	24.4 C (75.9 F)	42 of 100 (Notable)
Marion	United States	Record low minimum temperature	3.3 C (37.9 F)	42 of 100 (Notable)
Balla	Australia	Record daily precipitation	28.2 mm (1.1 in)	41 of 100 (Notable)
Hedrum	Norway	Record daily precipitation	39.5 mm (1.6 in)	41 of 100 (Notable)
Hamburg Fuhlsbuettel	Germany	Record high minimum temperature	14.7 C (58.5 F)	40 of 100 (Notable)
Asker	Norway	Record daily precipitation	49.0 mm (1.9 in)	40 of 100 (Notable)
Sandsprings	Australia	Record daily precipitation	40.2 mm (1.6 in)	39 of 100 (Notable)
Huetamo	Mexico	Record low maximum temperature	25.6 C (78.1 F)	39 of 100 (Notable)
Landvik	Norway	Record daily precipitation	59.0 mm (2.3 in)	39 of 100 (Notable)
Babuskin	Russia	Record high minimum temperature	12.3 C (54.1 F)	39 of 100 (Notable)
Edenton	United States	Record daily precipitation	102.9 mm (4.1 in)	39 of 100 (Notable)
Pearsall	United States	Record high maximum temperature	37.8 C (100.0 F)	39 of 100 (Notable)
Geraldton Airport	Australia	Record daily precipitation	43.4 mm (1.7 in)	38 of 100 (Notable)
Mumby	Australia	Record daily precipitation	30.0 mm (1.2 in)	38 of 100 (Notable)
El Fuerte	Mexico	Record low minimum temperature	10.6 C (51.1 F)	38 of 100 (Notable)
Atzalan	Mexico	Record low minimum temperature	6.7 C (44.1 F)	38 of 100 (Notable)
La Harpe	United States	Record low maximum temperature	11.1 C (52.0 F)	38 of 100 (Notable)
Yates Ctr	United States	Record daily precipitation	60.2 mm (2.4 in)	38 of 100 (Notable)
Clontarf Farm	Australia	Record daily precipitation	30.0 mm (1.2 in)	37 of 100 (Notable)
Fairfield	Australia	Record daily precipitation	26.6 mm (1.0 in)	37 of 100 (Notable)
Saigo	Japan	Record daily precipitation	119.1 mm (4.7 in)	37 of 100 (Notable)
Blythe	United States	Record high minimum temperature	27.8 C (82.0 F)	37 of 100 (Notable)
Eastman 1 W	United States	Record low maximum temperature	21.1 C (70.0 F)	37 of 100 (Notable)
Fulton L&D #13	United States	Record low minimum temperature	-3.3 C (26.1 F)	37 of 100 (Notable)
Chariton 1 E	United States	Record low minimum temperature	-1.7 C (28.9 F)	37 of 100 (Notable)
Nagano	Japan	Record daily precipitation	62.2 mm (2.4 in)	36 of 100 (Notable)
Buenavista	Mexico	Record high minimum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Presa San Ildefonso	Mexico	Record low minimum temperature	3.9 C (39.0 F)	36 of 100 (Notable)
Winterset 4N	United States	Record low minimum temperature	-0.6 C (30.9 F)	36 of 100 (Notable)
Lumberton	United States	Record daily precipitation	58.4 mm (2.3 in)	36 of 100 (Notable)
Edgefield 3 NNE	United States	Record daily precipitation	67.8 mm (2.7 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,025 records

Records set or tied on 21 September 1999 by type: Highest daily maximum 157, Lowest daily maximum 116, Highest daily minimum 219, Lowest daily minimum 282, Heaviest daily rainfall 251.

Records on 21 September 1999 by type
Record type	Records
Highest daily maximum	157
Lowest daily maximum	116
Highest daily minimum	219
Lowest daily minimum	282
Heaviest daily rainfall	251
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1999 by timescale: all-time 0, monthly 35, daily 990.

How Much Records Were Beaten By

776 broken records

Margins by which the 776 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 74.1. Ties are not counted.

Top 20 by Significance

21 September 1999

Top 20 records on 21 September 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1999	Nabawa, AU	monthly rain	49.6 mm (2.0 in)	10.7 mm (0.4 in)	82 years	65 of 100 (Major)
21 September 1999	Ajana, AU	daily rain	33.0 mm (1.3 in)	24.6 mm (1.0 in)	56 years	64 of 100 (Major)
21 September 1999	Strawberry North, AU	daily rain	33.0 mm (1.3 in)	17.5 mm (0.7 in)	85 years	64 of 100 (Major)
21 September 1999	Willigulli North, AU	monthly rain	48.2 mm (1.9 in)	10.4 mm (0.4 in)	82 years	63 of 100 (Major)
21 September 1999	Manarra, AU	daily rain	33.0 mm (1.3 in)	19.8 mm (0.8 in)	40 years	57 of 100 (Notable)
21 September 1999	Ogilvie, AU	daily rain	31.0 mm (1.2 in)	16.5 mm (0.6 in)	40 years	57 of 100 (Notable)
21 September 1999	Byron, AU	monthly rain	43.0 mm (1.7 in)	18.8 mm (0.7 in)	13 years	57 of 100 (Notable)
21 September 1999	Pindawa, AU	daily rain	36.6 mm (1.4 in)	23.9 mm (0.9 in)	40 years	56 of 100 (Notable)
21 September 1999	Mellenbye, AU	daily rain	25.6 mm (1.0 in)	18.0 mm (0.7 in)	40 years	56 of 100 (Notable)
21 September 1999	Mullewa, AU	daily rain	30.0 mm (1.2 in)	14.8 mm (0.6 in)	40 years	55 of 100 (Notable)
21 September 1999	Coolangatta, AU	monthly rain	38.0 mm (1.5 in)	7.5 mm (0.30 in)	74 years	55 of 100 (Notable)
21 September 1999	Tenindewa Bindu, AU	monthly rain	41.0 mm (1.6 in)	5.4 mm (0.21 in)	82 years	54 of 100 (Notable)
21 September 1999	Yarragadee, AU	daily rain	37.0 mm (1.5 in)	17.4 mm (0.7 in)	40 years	54 of 100 (Notable)
21 September 1999	Howatharra, AU	monthly rain	53.0 mm (2.1 in)	13.1 mm (0.5 in)	40 years	53 of 100 (Notable)
21 September 1999	Northampton, AU	monthly rain	45.8 mm (1.8 in)	2.6 mm (0.10 in)	91 years	51 of 100 (Notable)
21 September 1999	Yuna, AU	daily rain	37.2 mm (1.5 in)	28.2 mm (1.1 in)	0 years	49 of 100 (Notable)
21 September 1999	Eradu, AU	monthly rain	44.8 mm (1.8 in)	12.8 mm (0.5 in)	16 years	49 of 100 (Notable)
21 September 1999	Tezpur, IN	daily rain	122.9 mm (4.8 in)	36.5 mm (1.4 in)	65 years	49 of 100 (Notable)
21 September 1999	Yulin, CN	daily rain	45.8 mm (1.8 in)	33.3 mm (1.3 in)	14 years	48 of 100 (Notable)
21 September 1999	Nara, JP	daily rain	83.1 mm (3.3 in)	66.3 mm (2.6 in)	32 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

1805 to 1999

Records set or tied on this calendar date in each year from 1805 to 1999. 1999 had 1,025 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	588
2026	469

Download the Data

Data for records on 1999-09-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	684
10 to 20	51
20 to 30	23
30 to 40	8
40 to 50	5
50 to 60	2
60 to 70	1
70 to 80	2