Weather Records on 23 December 1999

936 weather records were set or tied worldwide on 23 December 1999. Highest significance: Dillalah, AU.

Key Facts for 23 December 1999

On 23 December 1999, 936 weather records were set or tied at long-record stations worldwide.
255 were record highs and 351 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 28 monthly and 905 daily.
Dillalah set a daily record precipitation of 40.0 mm (1.6 in) on 23 December 1999.
Across 150 earlier years (1793 to 2025) the same calendar date averaged 543 records.

Record Map

936 stations

936 station records on 23 December 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 December 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dillalah	Australia	Record daily precipitation	40.0 mm (1.6 in)	62 of 100 (Major)
Wilcannia (Reid St)	Australia	Record daily precipitation	63.4 mm (2.5 in)	61 of 100 (Major)
Louth (Bloxham Street)	Australia	Record daily precipitation	34.4 mm (1.4 in)	55 of 100 (Notable)
Booligal (Ulonga)	Australia	Record daily precipitation	38.0 mm (1.5 in)	55 of 100 (Notable)
Cork Station	Australia	Record daily precipitation	62.5 mm (2.5 in)	54 of 100 (Notable)
Hungerford	Australia	Record daily precipitation	58.5 mm (2.3 in)	54 of 100 (Notable)
Enngonia (Belalie)	Australia	Record daily precipitation	39.8 mm (1.6 in)	54 of 100 (Notable)
Coconut Is 840.1	United States	Record daily precipitation	130.6 mm (5.1 in)	54 of 100 (Notable)
Coorabulka	Australia	Record daily precipitation	46.0 mm (1.8 in)	53 of 100 (Notable)
Kimberley	South Africa	Record daily precipitation	42.0 mm (1.7 in)	50 of 100 (Notable)
Hatfield (Clare)	Australia	Record daily precipitation	33.2 mm (1.3 in)	49 of 100 (Notable)
Delegate (Weewalla)	Australia	Record daily precipitation	38.0 mm (1.5 in)	48 of 100 (Notable)
Dzan	Mexico	Record daily precipitation	65.3 mm (2.6 in)	48 of 100 (Notable)
Wanaaring (Owen Downs)	Australia	Record daily precipitation	90.0 mm (3.5 in)	47 of 100 (Notable)
Ivanhoe (Mt Manara)	Australia	Record daily precipitation	38.0 mm (1.5 in)	47 of 100 (Notable)
Ivanhoe (Wokabity)	Australia	Record daily precipitation	25.2 mm (1.0 in)	47 of 100 (Notable)
El Carmen (Smn)	Mexico	Record daily precipitation	54.1 mm (2.1 in)	47 of 100 (Notable)
Sandakan	Malaysia	Record daily precipitation	186.9 mm (7.4 in)	47 of 100 (Notable)
Delegate Station	Australia	Record daily precipitation	82.4 mm (3.2 in)	45 of 100 (Notable)
San Jeronimo	Mexico	Record low minimum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Mayaguez City	Puerto Rico [United States]	Record low maximum temperature	27.2 C (81.0 F)	43 of 100 (Notable)
Semjachik	Russia	Record daily precipitation	63.8 mm (2.5 in)	43 of 100 (Notable)
Whitefish Pt	United States	Record daily snowfall	26.7 cm (10.5 in)	43 of 100 (Notable)
Waialua 847	United States	Record low maximum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Newport	United States	Record high maximum temperature	16.1 C (61.0 F)	43 of 100 (Notable)
Westfield 2 SSE	United States	Record daily snowfall	22.9 cm (9.0 in)	42 of 100 (Notable)
Wrangell AP	United States	Record high maximum temperature	13.9 C (57.0 F)	41 of 100 (Notable)
Meda	Australia	Record daily precipitation	80.0 mm (3.1 in)	40 of 100 (Notable)
Wilcannia (Mount Murchison)	Australia	Record daily precipitation	29.8 mm (1.2 in)	40 of 100 (Notable)
Hatfield (Benilkie)	Australia	Record daily precipitation	38.0 mm (1.5 in)	40 of 100 (Notable)
Vik I Sogn III	Norway	Record snow depth	49.0 cm (19.3 in)	39 of 100 (Notable)
Erie Intl AP	United States	Record daily snowfall	28.4 cm (11.2 in)	39 of 100 (Notable)
Yakutat AP	United States	Record daily precipitation	170.2 mm (6.7 in)	39 of 100 (Notable)
Nelia Post Office	Australia	Record daily precipitation	40.0 mm (1.6 in)	38 of 100 (Notable)
Duchess Hotel	Australia	Record daily precipitation	40.0 mm (1.6 in)	38 of 100 (Notable)
Kentfield	United States	Record high maximum temperature	19.4 C (66.9 F)	38 of 100 (Notable)
Lissadell	Australia	Record daily precipitation	67.2 mm (2.6 in)	36 of 100 (Notable)
Augustus Downs Station	Australia	Record daily precipitation	102.0 mm (4.0 in)	36 of 100 (Notable)
Collerina (Kenebree)	Australia	Record daily precipitation	26.6 mm (1.0 in)	36 of 100 (Notable)
Chatsworth	Australia	Record daily precipitation	33.6 mm (1.3 in)	35 of 100 (Notable)
Tancochapa	Mexico	Record daily precipitation	134.9 mm (5.3 in)	35 of 100 (Notable)
Allegan 5NE	United States	Record daily snowfall	20.8 cm (8.2 in)	35 of 100 (Notable)
Hatfield (the Vale)	Australia	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
El Zapote	Mexico	Record low maximum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Zmeinogorsk	Russia	Record high minimum temperature	0.7 C (33.3 F)	34 of 100 (Routine)
Carey Downs	Australia	Record daily precipitation	27.3 mm (1.1 in)	33 of 100 (Routine)
Cooma (Kiaora)	Australia	Record daily precipitation	31.0 mm (1.2 in)	33 of 100 (Routine)
Ixcateopan de Tlapa	Mexico	Record low maximum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Rinconada	Mexico	Record low maximum temperature	0.0 C (32.0 F)	33 of 100 (Routine)
Cruillas	Mexico	Record daily precipitation	45.0 mm (1.8 in)	33 of 100 (Routine)
Ardtalnaig	United Kingdom	Record daily precipitation	39.3 mm (1.5 in)	33 of 100 (Routine)
Haines AP	United States	Record high maximum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Delegate Post Office	Australia	Record daily precipitation	46.4 mm (1.8 in)	32 of 100 (Routine)
Lancang	China	Record low maximum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
Finca Chayabe	Mexico	Record daily precipitation	39.9 mm (1.6 in)	32 of 100 (Routine)
El Rodeo	Mexico	Record low maximum temperature	20.6 C (69.1 F)	32 of 100 (Routine)
Phetchabun	Thailand	Record low maximum temperature	21.7 C (71.1 F)	32 of 100 (Routine)
Canyon Dam	United States	Record high maximum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Weona	Australia	Record daily precipitation	56.0 mm (2.2 in)	31 of 100 (Routine)
Fords Bridge (Delta)	Australia	Record daily precipitation	34.0 mm (1.3 in)	31 of 100 (Routine)

Counts by Type and Timescale

936 records

Records set or tied on 23 December 1999 by type: Highest daily maximum 166, Lowest daily maximum 136, Highest daily minimum 89, Lowest daily minimum 215, Heaviest daily rainfall 297, Heaviest daily snowfall 16, Deepest snow cover 17.

Records on 23 December 1999 by type
Record type	Records
Highest daily maximum	166
Lowest daily maximum	136
Highest daily minimum	89
Lowest daily minimum	215
Heaviest daily rainfall	297
Heaviest daily snowfall	16
Deepest snow cover	17

Records on 23 December 1999 by timescale: all-time 3, monthly 28, daily 905.

How Much Records Were Beaten By

798 broken records

Margins by which the 798 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 160.0. Ties are not counted.

Top 20 by Significance

23 December 1999

Top 20 records on 23 December 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 December 1999	Dillalah, AU	daily rain	40.0 mm (1.6 in)	31.1 mm (1.2 in)	100 years	62 of 100 (Major)
23 December 1999	Wilcannia (Reid St), AU	daily rain	63.4 mm (2.5 in)	53.2 mm (2.1 in)	48 years	61 of 100 (Major)
23 December 1999	Louth (Bloxham Street), AU	daily rain	34.4 mm (1.4 in)	21.2 mm (0.8 in)	108 years	55 of 100 (Notable)
23 December 1999	Booligal (Ulonga), AU	daily rain	38.0 mm (1.5 in)	13.4 mm (0.5 in)	111 years	55 of 100 (Notable)
23 December 1999	Cork Station, AU	daily rain	62.5 mm (2.5 in)	34.3 mm (1.4 in)	85 years	54 of 100 (Notable)
23 December 1999	Hungerford, AU	daily rain	58.5 mm (2.3 in)	18.1 mm (0.7 in)	113 years	54 of 100 (Notable)
23 December 1999	Enngonia (Belalie), AU	daily rain	39.8 mm (1.6 in)	31.2 mm (1.2 in)	77 years	54 of 100 (Notable)
23 December 1999	Coconut Is 840.1, US	daily rain	130.6 mm (5.1 in)	115.6 mm (4.6 in)	34 years	54 of 100 (Notable)
23 December 1999	Coorabulka, AU	daily rain	46.0 mm (1.8 in)	22.4 mm (0.9 in)	76 years	53 of 100 (Notable)
23 December 1999	Kimberley, ZA	daily rain	42.0 mm (1.7 in)	28.0 mm (1.1 in)	52 years	50 of 100 (Notable)
23 December 1999	Hatfield (Clare), AU	daily rain	33.2 mm (1.3 in)	8.3 mm (0.33 in)	100 years	49 of 100 (Notable)
23 December 1999	Delegate (Weewalla), AU	daily rain	38.0 mm (1.5 in)	13.9 mm (0.5 in)	77 years	48 of 100 (Notable)
23 December 1999	Dzan, MX	daily rain	65.3 mm (2.6 in)	65.0 mm (2.6 in)	32 years	48 of 100 (Notable)
23 December 1999	Wanaaring (Owen Downs), AU	monthly rain	90.0 mm (3.5 in)	35.0 mm (1.4 in)	11 years	47 of 100 (Notable)
23 December 1999	Ivanhoe (Mt Manara), AU	daily rain	38.0 mm (1.5 in)	9.0 mm (0.35 in)	100 years	47 of 100 (Notable)
23 December 1999	Ivanhoe (Wokabity), AU	daily rain	25.2 mm (1.0 in)	18.6 mm (0.7 in)	68 years	47 of 100 (Notable)
23 December 1999	El Carmen (Smn), MX	daily rain	54.1 mm (2.1 in)	34.3 mm (1.4 in)	69 years	47 of 100 (Notable)
23 December 1999	Sandakan, MY	daily rain	186.9 mm (7.4 in)	119.9 mm (4.7 in)	12 years	47 of 100 (Notable)
23 December 1999	Delegate Station, AU	monthly rain	82.4 mm (3.2 in)	12.0 mm (0.5 in)	47 years	45 of 100 (Notable)
23 December 1999	San Jeronimo, MX	daily low min	15.6 C (60.1 F)	3.8 C (6.8 F)	29 years	44 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 936 records.

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

Records on 12-23 in each year
Year	Records
1793	1
1825	1
1829	1
1840	1
1852	1
1855	1
1860	3
1864	1
1868	1
1870	6
1871	2
1875	2
1877	1
1878	1
1880	1
1881	1
1883	2
1887	2
1888	2
1889	2
1891	3
1893	2
1894	5
1896	4
1897	1
1898	4
1899	6
1901	2
1903	5
1904	11
1905	3
1906	16
1907	35
1908	8
1909	59
1910	41
1911	29
1912	36
1913	87
1914	57
1915	59
1916	34
1917	26
1918	51
1919	39
1920	33
1921	219
1922	28
1923	146
1924	257
1925	205
1926	146
1927	100
1928	137
1929	393
1930	141
1931	987
1932	329
1933	734
1934	92
1935	360
1936	370
1937	232
1938	183
1939	264
1940	365
1941	750
1942	534
1943	745
1944	484
1945	752
1946	234
1947	517
1948	528
1949	618
1950	521
1951	405
1952	242
1953	605
1954	348
1955	1,162
1956	496
1957	485
1958	209
1959	352
1960	1,442
1961	320
1962	439
1963	1,391
1964	1,457
1965	653
1966	436
1967	885
1968	891
1969	852
1970	940
1971	695
1972	376
1973	479
1974	611
1975	628
1976	514
1977	663
1978	351
1979	813
1980	516
1981	1,127
1982	1,140
1983	4,533
1984	668
1985	629
1986	571
1987	804
1988	878
1989	3,791
1990	3,241
1991	1,196
1992	504
1993	991
1994	1,091
1995	1,212
1996	1,184
1997	1,016
1998	688
1999	936
2000	746
2001	663
2002	778
2003	766
2004	1,231
2005	903
2006	1,194
2007	873
2008	771
2009	1,073
2010	1,298
2011	735
2012	817
2013	1,235
2014	1,070
2015	1,972
2016	432
2017	621
2018	373
2019	699
2020	916
2021	702
2022	1,426
2023	856
2024	637
2025	1,678

Download the Data

Data for records on 1999-12-23: 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	749
20 to 40	31
40 to 60	4
60 to 80	3
80 to 100	4
100 to 120	6
120 to 140	0
140 to 160	1