Weather Records on 1 September 1999

925 weather records were set or tied worldwide on 1 September 1999. Highest significance: Lisbon, US.

Key Facts for 1 September 1999

On 1 September 1999, 925 weather records were set or tied at long-record stations worldwide.
331 were record highs and 473 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 45 monthly and 880 daily.
Lisbon set a daily record precipitation of 66.8 mm (2.6 in) on 1 September 1999.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 438 records.

Record Map

925 stations

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

Weather records on 1 September 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lisbon	United States	Record daily precipitation	66.8 mm (2.6 in)	65 of 100 (Major)
La Union	Mexico	Record daily precipitation	165.6 mm (6.5 in)	63 of 100 (Major)
Sonnblick	Austria	Record daily precipitation	42.1 mm (1.7 in)	61 of 100 (Major)
Alliance 1WNW	United States	Record daily precipitation	48.3 mm (1.9 in)	59 of 100 (Notable)
Cape St. Lucia	South Africa	Record daily precipitation	64.0 mm (2.5 in)	54 of 100 (Notable)
Aikawa	Japan	Record daily precipitation	102.9 mm (4.1 in)	50 of 100 (Notable)
Vallecitos	Mexico	Record daily precipitation	155.4 mm (6.1 in)	49 of 100 (Notable)
Yoder 5 W	United States	Record daily precipitation	44.5 mm (1.8 in)	49 of 100 (Notable)
Lerma	Mexico	Record high maximum temperature	30.0 C (86.0 F)	45 of 100 (Notable)
Chula Vista	United States	Record low minimum temperature	7.2 C (45.0 F)	45 of 100 (Notable)
Wishek	United States	Record daily precipitation	45.7 mm (1.8 in)	45 of 100 (Notable)
Riverside 7 SSW	United States	Record low minimum temperature	-5.0 C (23.0 F)	45 of 100 (Notable)
Yelabuga	Russia	Record daily precipitation	33.8 mm (1.3 in)	44 of 100 (Notable)
Douglas	United States	Record low minimum temperature	14.4 C (57.9 F)	44 of 100 (Notable)
Waialua 847	United States	Record high minimum temperature	23.9 C (75.0 F)	44 of 100 (Notable)
Richland	United States	Record low minimum temperature	1.7 C (35.1 F)	43 of 100 (Notable)
Rosalia	United States	Record low minimum temperature	0.0 C (32.0 F)	43 of 100 (Notable)
Fargo Hector Intl AP	United States	Record daily precipitation	58.9 mm (2.3 in)	43 of 100 (Notable)
Alturas	United States	Record low minimum temperature	-2.8 C (27.0 F)	42 of 100 (Notable)
Enderlin 2W	United States	Record daily precipitation	61.7 mm (2.4 in)	42 of 100 (Notable)
Heppner	United States	Record low maximum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Bradford	United Kingdom	Record high maximum temperature	25.9 C (78.6 F)	40 of 100 (Notable)
Lyman	United States	Record daily precipitation	53.3 mm (2.1 in)	40 of 100 (Notable)
Tenasco	Mexico	Record daily precipitation	51.8 mm (2.0 in)	38 of 100 (Notable)
Verhnee Dubrovo	Russia	Record daily precipitation	28.9 mm (1.1 in)	38 of 100 (Notable)
Elizabethton	United States	Record low minimum temperature	8.9 C (48.0 F)	38 of 100 (Notable)
El Zapote	Mexico	Record high minimum temperature	27.8 C (82.0 F)	37 of 100 (Notable)
Lemon Cove	United States	Record low minimum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
McDermitt	United States	Record low maximum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Jal	United States	Record high minimum temperature	27.8 C (82.0 F)	37 of 100 (Notable)
Low Head (Comparison)	Australia	Record high minimum temperature	11.9 C (53.4 F)	36 of 100 (Notable)
Braganca	Portugal	Record daily precipitation	55.8 mm (2.2 in)	36 of 100 (Notable)
Shepetivka	Ukraine	Record daily precipitation	35.9 mm (1.4 in)	36 of 100 (Notable)
Litchfield Park	United States	Record low maximum temperature	29.4 C (84.9 F)	36 of 100 (Notable)
Elizabeth City	United States	Record low maximum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Mt Wx	United States	Record low maximum temperature	16.7 C (62.1 F)	36 of 100 (Notable)
Tepexpan	Mexico	Record high maximum temperature	33.9 C (93.0 F)	35 of 100 (Notable)
Salamanca Aeropuerto	Spain	Record daily precipitation	25.7 mm (1.0 in)	35 of 100 (Notable)
Hull	United Kingdom	Record high maximum temperature	27.3 C (81.1 F)	35 of 100 (Notable)
Chico UNIV Farm	United States	Record low minimum temperature	7.2 C (45.0 F)	35 of 100 (Notable)
Grangeville	United States	Record low minimum temperature	0.0 C (32.0 F)	35 of 100 (Notable)
Pilot Rock 1 SE	United States	Record low minimum temperature	1.7 C (35.1 F)	35 of 100 (Notable)
Hobart (Ellerslie Road)	Australia	Record high minimum temperature	12.6 C (54.7 F)	34 of 100 (Routine)
Wickenburg	United States	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
Thorhult	United States	Record daily precipitation	89.9 mm (3.5 in)	34 of 100 (Routine)
Seneca	United States	Record low minimum temperature	-7.2 C (19.0 F)	34 of 100 (Routine)
Diablo Dam	United States	Record low minimum temperature	4.4 C (39.9 F)	34 of 100 (Routine)
Marlinton	United States	Record low minimum temperature	2.2 C (36.0 F)	34 of 100 (Routine)
Tashkent	Uzbekistan	Record high minimum temperature	21.0 C (69.8 F)	34 of 100 (Routine)
El Quelite (Cfe)	Mexico	Record low minimum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Yreka	United States	Record low minimum temperature	2.2 C (36.0 F)	33 of 100 (Routine)
Monticello	United States	Record low minimum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Natchez	United States	Record daily precipitation	57.4 mm (2.3 in)	33 of 100 (Routine)
Blackleaf	United States	Record low maximum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Presa Jaripo	Mexico	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Dorado 2 WNW	Puerto Rico [United States]	Record low maximum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Valladolid (Villanubla)	Spain	Record daily precipitation	27.7 mm (1.1 in)	32 of 100 (Routine)
Jerome	United States	Record low minimum temperature	2.2 C (36.0 F)	32 of 100 (Routine)
Ashland	United States	Record low minimum temperature	1.7 C (35.1 F)	32 of 100 (Routine)
Lewisburg 3 N	United States	Record low minimum temperature	4.4 C (39.9 F)	32 of 100 (Routine)

Counts by Type and Timescale

925 records

Records set or tied on 1 September 1999 by type: Highest daily maximum 159, Lowest daily maximum 129, Highest daily minimum 172, Lowest daily minimum 344, Heaviest daily rainfall 120, Heaviest daily snowfall 1.

Records on 1 September 1999 by type
Record type	Records
Highest daily maximum	159
Lowest daily maximum	129
Highest daily minimum	172
Lowest daily minimum	344
Heaviest daily rainfall	120
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 1 September 1999 by timescale: all-time 0, monthly 45, daily 880.

How Much Records Were Beaten By

651 broken records

Margins by which the 651 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 117.6. Ties are not counted.

Top 20 by Significance

1 September 1999

Top 20 records on 1 September 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 1999	Lisbon, US	daily rain	66.8 mm (2.6 in)	42.7 mm (1.7 in)	56 years	65 of 100 (Major)
1 September 1999	La Union, MX	daily rain	165.6 mm (6.5 in)	112.0 mm (4.4 in)	64 years	63 of 100 (Major)
1 September 1999	Sonnblick, AT	daily rain	42.1 mm (1.7 in)	22.6 mm (0.9 in)	89 years	61 of 100 (Major)
1 September 1999	Alliance 1WNW, US	daily rain	48.3 mm (1.9 in)	32.3 mm (1.3 in)	32 years	59 of 100 (Notable)
1 September 1999	Cape St. Lucia, ZA	daily rain	64.0 mm (2.5 in)	49.0 mm (1.9 in)	50 years	54 of 100 (Notable)
1 September 1999	Aikawa, JP	daily rain	102.9 mm (4.1 in)	48.2 mm (1.9 in)	40 years	50 of 100 (Notable)
1 September 1999	Vallecitos, MX	daily rain	155.4 mm (6.1 in)	117.6 mm (4.6 in)	20 years	49 of 100 (Notable)
1 September 1999	Yoder 5 W, US	daily rain	44.5 mm (1.8 in)	25.4 mm (1.0 in)	36 years	49 of 100 (Notable)
1 September 1999	Lerma, MX	daily high max	30.0 C (86.0 F)	5.0 C (9.0 F)	48 years	45 of 100 (Notable)
1 September 1999	Chula Vista, US	monthly low min	7.2 C (45.0 F)	1.1 C (2.0 F)	79 years	45 of 100 (Notable)
1 September 1999	Wishek, US	daily rain	45.7 mm (1.8 in)	21.1 mm (0.8 in)	32 years	45 of 100 (Notable)
1 September 1999	Riverside 7 SSW, US	daily low min	-5.0 C (23.0 F)	3.9 C (7.0 F)	92 years	45 of 100 (Notable)
1 September 1999	Yelabuga, RU	daily rain	33.8 mm (1.3 in)	21.7 mm (0.9 in)	4 years	44 of 100 (Notable)
1 September 1999	Douglas, US	daily low min	14.4 C (57.9 F)	2.3 C (4.1 F)	96 years	44 of 100 (Notable)
1 September 1999	Waialua 847, US	daily high min	23.9 C (75.0 F)	1.7 C (3.1 F)	80 years	44 of 100 (Notable)
1 September 1999	Richland, US	daily low min	1.7 C (35.1 F)	1.6 C (2.9 F)	98 years	43 of 100 (Notable)
1 September 1999	Rosalia, US	daily low min	0.0 C (32.0 F)	1.7 C (3.1 F)	98 years	43 of 100 (Notable)
1 September 1999	Fargo Hector Intl AP, US	daily rain	58.9 mm (2.3 in)	31.7 mm (1.2 in)	2 years	43 of 100 (Notable)
1 September 1999	Alturas, US	daily low min	-2.8 C (27.0 F)	2.2 C (4.0 F)	90 years	42 of 100 (Notable)
1 September 1999	Enderlin 2W, US	daily rain	61.7 mm (2.4 in)	37.1 mm (1.5 in)	1 year	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

1797 to 1999

Records set or tied on this calendar date in each year from 1797 to 1999. 1999 had 925 records.

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

Records on 09-01 in each year
Year	Records
1797	1
1806	1
1819	1
1827	1
1831	1
1838	1
1851	1
1853	1
1854	1
1857	1
1858	1
1859	1
1860	2
1861	1
1865	1
1866	1
1867	2
1869	3
1871	1
1873	1
1876	2
1877	2
1878	3
1879	2
1881	5
1883	1
1886	3
1887	3
1888	2
1890	2
1892	2
1894	3
1897	4
1898	10
1899	3
1900	2
1901	14
1902	5
1903	16
1904	9
1905	6
1906	26
1907	14
1908	26
1909	34
1910	22
1911	16
1912	47
1913	32
1914	23
1915	46
1916	16
1917	24
1918	31
1919	19
1920	31
1921	46
1922	67
1923	75
1924	210
1925	127
1926	182
1927	136
1928	166
1929	324
1930	264
1931	233
1932	550
1933	622
1934	654
1935	584
1936	385
1937	502
1938	373
1939	303
1940	333
1941	497
1942	532
1943	578
1944	377
1945	497
1946	642
1947	555
1948	460
1949	1,102
1950	849
1951	668
1952	644
1953	937
1954	407
1955	413
1956	504
1957	320
1958	427
1959	519
1960	408
1961	531
1962	368
1963	416
1964	621
1965	657
1966	596
1967	1,263
1968	604
1969	493
1970	502
1971	464
1972	518
1973	874
1974	895
1975	939
1976	627
1977	500
1978	809
1979	459
1980	671
1981	649
1982	642
1983	1,167
1984	619
1985	901
1986	964
1987	909
1988	651
1989	823
1990	749
1991	687
1992	1,010
1993	1,122
1994	1,291
1995	1,165
1996	823
1997	1,161
1998	1,159
1999	925
2000	1,613
2001	904
2002	778
2003	1,254
2004	827
2005	901
2006	1,157
2007	976
2008	1,204
2009	1,003
2010	1,313
2011	1,071
2012	874
2013	775
2014	515
2015	661
2016	522
2017	686
2018	399
2019	800
2020	689
2021	751
2022	1,016
2023	720
2024	938
2025	359
2026	521

Download the Data

Data for records on 1999-09-01: 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	636
20 to 40	10
40 to 60	3
60 to 80	0
80 to 100	0
100 to 120	2