Weather Records on 30 September 1999

1,144 weather records were set or tied worldwide on 30 September 1999. Highest significance: Meringa Sugar Exp STN, AU.

Key Facts for 30 September 1999

On 30 September 1999, 1,144 weather records were set or tied at long-record stations worldwide.
423 were record highs and 234 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 52 monthly and 1,089 daily.
Meringa Sugar Exp STN set a daily record precipitation of 45.2 mm (1.8 in) on 30 September 1999.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 435 records.

Record Map

1,144 stations

1,144 station records on 30 September 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Meringa Sugar Exp STN	Australia	Record daily precipitation	45.2 mm (1.8 in)	64 of 100 (Major)
Schenley Lock 5	United States	Record daily precipitation	69.9 mm (2.8 in)	59 of 100 (Notable)
Albemarle	United States	Record daily precipitation	94.0 mm (3.7 in)	55 of 100 (Notable)
Mt Wx	United States	Record daily precipitation	96.5 mm (3.8 in)	55 of 100 (Notable)
Delaware	United States	Record daily precipitation	50.8 mm (2.0 in)	54 of 100 (Notable)
Free Union	United States	Record daily precipitation	111.0 mm (4.4 in)	52 of 100 (Notable)
Binya Post Office	Australia	Record daily precipitation	35.2 mm (1.4 in)	50 of 100 (Notable)
Wagga Wagga Research Centre	Australia	Record daily precipitation	37.8 mm (1.5 in)	49 of 100 (Notable)
Vilsandi	Estonia	Record daily precipitation	25.4 mm (1.0 in)	49 of 100 (Notable)
Natrona Lock 4	United States	Record daily precipitation	74.7 mm (2.9 in)	49 of 100 (Notable)
Ridgway	United States	Record daily precipitation	50.8 mm (2.0 in)	49 of 100 (Notable)
Kane 1NNE	United States	Record daily precipitation	71.4 mm (2.8 in)	48 of 100 (Notable)
Waverly	United States	Record daily precipitation	25.9 mm (1.0 in)	47 of 100 (Notable)
Sinnemahoning	United States	Record daily precipitation	61.5 mm (2.4 in)	47 of 100 (Notable)
Charlottesville 2W	United States	Record daily precipitation	89.7 mm (3.5 in)	47 of 100 (Notable)
Franklinville	United States	Record daily precipitation	35.8 mm (1.4 in)	46 of 100 (Notable)
Buckhannon	United States	Record daily precipitation	45.7 mm (1.8 in)	46 of 100 (Notable)
Babinda Post Office	Australia	Record daily precipitation	76.8 mm (3.0 in)	45 of 100 (Notable)
Mosquito Creek Lake	United States	Record daily precipitation	53.3 mm (2.1 in)	45 of 100 (Notable)
Jamestown 2 NW	United States	Record daily precipitation	51.6 mm (2.0 in)	45 of 100 (Notable)
Actopan	Mexico	Record daily precipitation	116.8 mm (4.6 in)	44 of 100 (Notable)
Glen Hazel 2 NE Dam	United States	Record daily precipitation	56.1 mm (2.2 in)	44 of 100 (Notable)
Port Allegany	United States	Record daily precipitation	49.8 mm (2.0 in)	44 of 100 (Notable)
Mt Washington	United States	Record daily precipitation	84.6 mm (3.3 in)	44 of 100 (Notable)
Gordonvale Post Office	Australia	Record daily precipitation	42.0 mm (1.7 in)	43 of 100 (Notable)
Pbo Anantapur	India	Record daily precipitation	77.0 mm (3.0 in)	43 of 100 (Notable)
Jena Sternwarte	Germany	Record high minimum temperature	14.9 C (58.8 F)	42 of 100 (Notable)
Meerbeck	Germany	Record daily precipitation	27.8 mm (1.1 in)	42 of 100 (Notable)
Rouveen	Netherlands	Record daily precipitation	35.6 mm (1.4 in)	42 of 100 (Notable)
Bolivar	United States	Record daily precipitation	50.0 mm (2.0 in)	42 of 100 (Notable)
Franklin	United States	Record daily precipitation	48.8 mm (1.9 in)	42 of 100 (Notable)
Laurelton Ctr	United States	Record daily precipitation	46.7 mm (1.8 in)	42 of 100 (Notable)
Tamaqua	United States	Record daily precipitation	49.8 mm (2.0 in)	42 of 100 (Notable)
Warrenton 3 SE	United States	Record daily precipitation	57.2 mm (2.3 in)	42 of 100 (Notable)
Brocken	Germany	Record daily precipitation	45.1 mm (1.8 in)	41 of 100 (Notable)
Dedemsvaart	Netherlands	Record daily precipitation	31.6 mm (1.2 in)	41 of 100 (Notable)
Halmstad	Sweden	Record high minimum temperature	13.2 C (55.8 F)	41 of 100 (Notable)
Chippewa Lake	United States	Record daily precipitation	55.6 mm (2.2 in)	41 of 100 (Notable)
Acmetonia Lock 3	United States	Record daily precipitation	45.0 mm (1.8 in)	41 of 100 (Notable)
Warren	United States	Record daily precipitation	34.0 mm (1.3 in)	41 of 100 (Notable)
Northfield	United States	Record high minimum temperature	16.1 C (61.0 F)	41 of 100 (Notable)
Holbrook (Narrawa)	Australia	Record daily precipitation	43.6 mm (1.7 in)	40 of 100 (Notable)
Virtsu	Estonia	Record daily precipitation	36.9 mm (1.5 in)	40 of 100 (Notable)
Frontera Hidalgo	Mexico	Record low maximum temperature	23.9 C (75.0 F)	40 of 100 (Notable)
Galeton	United States	Record daily precipitation	41.9 mm (1.6 in)	40 of 100 (Notable)
S Mtn	United States	Record daily precipitation	66.0 mm (2.6 in)	40 of 100 (Notable)
Beverley Springs	Australia	Record daily precipitation	31.0 mm (1.2 in)	39 of 100 (Notable)
Ai-Petri	Ukraine	Record high maximum temperature	23.8 C (74.8 F)	38 of 100 (Notable)
Mineral Ridge Wtr Wks	United States	Record daily precipitation	63.2 mm (2.5 in)	38 of 100 (Notable)
Kittanning Lock 7	United States	Record daily precipitation	59.2 mm (2.3 in)	38 of 100 (Notable)
Putneyville 2 SE Dam	United States	Record daily precipitation	51.3 mm (2.0 in)	38 of 100 (Notable)
Tamaqua 4 N Dam	United States	Record daily precipitation	48.8 mm (1.9 in)	38 of 100 (Notable)
Union City Filtration Plt	United States	Record daily precipitation	57.9 mm (2.3 in)	38 of 100 (Notable)
Santo Domingo	Mexico	Record low minimum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Calipan	Mexico	Record daily precipitation	40.9 mm (1.6 in)	37 of 100 (Notable)
Steenwijksmoer	Netherlands	Record daily precipitation	38.4 mm (1.5 in)	37 of 100 (Notable)
Ufa	Russia	Record high minimum temperature	12.2 C (54.0 F)	37 of 100 (Notable)
Casa Grande	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Montello 2NE	United States	Record low minimum temperature	-10.6 C (12.9 F)	37 of 100 (Notable)
Nicosia	Cyprus	Record high maximum temperature	38.1 C (100.6 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,144 records

Records set or tied on 30 September 1999 by type: Highest daily maximum 188, Lowest daily maximum 114, Highest daily minimum 235, Lowest daily minimum 120, Heaviest daily rainfall 482, Heaviest daily snowfall 3, Deepest snow cover 2.

Records on 30 September 1999 by type
Record type	Records
Highest daily maximum	188
Lowest daily maximum	114
Highest daily minimum	235
Lowest daily minimum	120
Heaviest daily rainfall	482
Heaviest daily snowfall	3
Deepest snow cover	2

Records on 30 September 1999 by timescale: all-time 3, monthly 52, daily 1,089.

How Much Records Were Beaten By

936 broken records

Margins by which the 936 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 85.1. Ties are not counted.

Top 20 by Significance

30 September 1999

Top 20 records on 30 September 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1999	Meringa Sugar Exp STN, AU	daily rain	45.2 mm (1.8 in)	28.9 mm (1.1 in)	61 years	64 of 100 (Major)
30 September 1999	Schenley Lock 5, US	daily rain	69.9 mm (2.8 in)	20.4 mm (0.8 in)	102 years	59 of 100 (Notable)
30 September 1999	Albemarle, US	daily rain	94.0 mm (3.7 in)	56.4 mm (2.2 in)	62 years	55 of 100 (Notable)
30 September 1999	Mt Wx, US	daily rain	96.5 mm (3.8 in)	38.1 mm (1.5 in)	74 years	55 of 100 (Notable)
30 September 1999	Delaware, US	daily rain	50.8 mm (2.0 in)	15.5 mm (0.6 in)	102 years	54 of 100 (Notable)
30 September 1999	Free Union, US	daily rain	111.0 mm (4.4 in)	85.1 mm (3.4 in)	26 years	52 of 100 (Notable)
30 September 1999	Binya Post Office, AU	daily rain	35.2 mm (1.4 in)	20.0 mm (0.8 in)	36 years	50 of 100 (Notable)
30 September 1999	Wagga Wagga Research Centre, AU	daily rain	37.8 mm (1.5 in)	22.8 mm (0.9 in)	36 years	49 of 100 (Notable)
30 September 1999	Vilsandi, EE	daily rain	25.4 mm (1.0 in)	6.6 mm (0.26 in)	86 years	49 of 100 (Notable)
30 September 1999	Natrona Lock 4, US	monthly rain	74.7 mm (2.9 in)	20.9 mm (0.8 in)	37 years	49 of 100 (Notable)
30 September 1999	Ridgway, US	daily rain	50.8 mm (2.0 in)	10.2 mm (0.4 in)	102 years	49 of 100 (Notable)
30 September 1999	Kane 1NNE, US	daily rain	71.4 mm (2.8 in)	30.3 mm (1.2 in)	44 years	48 of 100 (Notable)
30 September 1999	Waverly, US	daily rain	25.9 mm (1.0 in)	10.7 mm (0.4 in)	92 years	47 of 100 (Notable)
30 September 1999	Sinnemahoning, US	daily rain	61.5 mm (2.4 in)	45.8 mm (1.8 in)	12 years	47 of 100 (Notable)
30 September 1999	Charlottesville 2W, US	daily rain	89.7 mm (3.5 in)	43.2 mm (1.7 in)	50 years	47 of 100 (Notable)
30 September 1999	Franklinville, US	daily rain	35.8 mm (1.4 in)	17.5 mm (0.7 in)	60 years	46 of 100 (Notable)
30 September 1999	Buckhannon, US	daily rain	45.7 mm (1.8 in)	15.2 mm (0.6 in)	78 years	46 of 100 (Notable)
30 September 1999	Babinda Post Office, AU	daily rain	76.8 mm (3.0 in)	20.7 mm (0.8 in)	86 years	45 of 100 (Notable)
30 September 1999	Mosquito Creek Lake, US	daily rain	53.3 mm (2.1 in)	35.0 mm (1.4 in)	26 years	45 of 100 (Notable)
30 September 1999	Jamestown 2 NW, US	daily rain	51.6 mm (2.0 in)	33.1 mm (1.3 in)	26 years	45 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

1806 to 1999

Records set or tied on this calendar date in each year from 1806 to 1999. 1999 had 1,144 records.

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

Records on 09-30 in each year
Year	Records
1806	1
1813	1
1817	1
1819	2
1834	1
1841	1
1842	1
1847	1
1853	1
1854	1
1855	1
1861	1
1862	1
1866	1
1868	2
1869	3
1870	1
1874	1
1877	1
1878	1
1881	5
1883	2
1885	1
1886	3
1887	1
1888	4
1889	1
1892	2
1893	3
1894	8
1895	5
1896	2
1897	3
1898	3
1899	12
1900	4
1901	11
1902	7
1903	9
1904	14
1905	25
1906	14
1907	16
1908	18
1909	10
1910	5
1911	47
1912	47
1913	10
1914	33
1915	84
1916	209
1917	19
1918	45
1919	28
1920	71
1921	61
1922	71
1923	183
1924	243
1925	211
1926	194
1927	486
1928	560
1929	181
1930	110
1931	225
1932	363
1933	437
1934	398
1935	209
1936	432
1937	417
1938	428
1939	371
1940	316
1941	482
1942	405
1943	404
1944	369
1945	889
1946	320
1947	433
1948	267
1949	366
1950	731
1951	597
1952	504
1953	1,136
1954	1,059
1955	406
1956	350
1957	663
1958	442
1959	1,159
1960	161
1961	618
1962	202
1963	818
1964	332
1965	459
1966	592
1967	859
1968	449
1969	465
1970	334
1971	1,359
1972	676
1973	407
1974	742
1975	686
1976	775
1977	870
1978	399
1979	479
1980	832
1981	688
1982	806
1983	1,102
1984	1,267
1985	1,892
1986	1,805
1987	649
1988	453
1989	713
1990	665
1991	949
1992	980
1993	988
1994	816
1995	1,061
1996	1,396
1997	729
1998	1,206
1999	1,144
2000	887
2001	699
2002	677
2003	1,079
2004	573
2005	761
2006	617
2007	841
2008	585
2009	826
2010	1,059
2011	1,258
2012	637
2013	634
2014	529
2015	997
2016	746
2017	404
2018	717
2019	2,192
2020	554
2021	823
2022	563
2023	1,012
2024	948
2025	559
2026	529

Download the Data

Data for records on 1999-09-30: 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	867
20 to 40	57
40 to 60	10
60 to 80	1
80 to 100	1