Weather Records on 18 December 1943

419 weather records were set or tied worldwide on 18 December 1943. Highest significance: Old Mapoon, AU.

Key Facts for 18 December 1943

On 18 December 1943, 419 weather records were set or tied at long-record stations worldwide.
134 were record highs and 136 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 413 daily.
Old Mapoon set a daily record precipitation of 170.7 mm (6.7 in) on 18 December 1943.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 480 records.

Record Map

419 stations

419 station records on 18 December 1943 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 December 1943: highest significance records shown on the map
Station	Country	Type	Value	Significance
Old Mapoon	Australia	Record daily precipitation	170.7 mm (6.7 in)	53 of 100 (Notable)
Lawn Hill	Australia	Record daily precipitation	101.3 mm (4.0 in)	47 of 100 (Notable)
Pinnaroo	Australia	Record daily precipitation	26.7 mm (1.1 in)	46 of 100 (Notable)
Douglas	South Africa	Record daily precipitation	39.6 mm (1.6 in)	46 of 100 (Notable)
Ipswich	Australia	Record daily precipitation	59.4 mm (2.3 in)	42 of 100 (Notable)
Coorada	Australia	Record daily precipitation	57.2 mm (2.3 in)	38 of 100 (Notable)
Lameroo Comparison	Australia	Record daily precipitation	29.5 mm (1.2 in)	37 of 100 (Notable)
Copeville	Australia	Record daily precipitation	30.2 mm (1.2 in)	36 of 100 (Notable)
Millmerran Post Office	Australia	Record daily precipitation	68.8 mm (2.7 in)	36 of 100 (Notable)
Ngukurr	Australia	Record daily precipitation	103.1 mm (4.1 in)	34 of 100 (Routine)
Coonamble (Nardoo)	Australia	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Kingston SE	Australia	Record daily precipitation	31.2 mm (1.2 in)	33 of 100 (Routine)
Western Creek	Australia	Record daily precipitation	56.1 mm (2.2 in)	33 of 100 (Routine)
Jeogla Station	Australia	Record daily precipitation	39.1 mm (1.5 in)	33 of 100 (Routine)
Kindersley	Canada	Record high maximum temperature	5.6 C (42.1 F)	33 of 100 (Routine)
Portage la Prairie	Canada	Record high minimum temperature	-8.3 C (17.1 F)	33 of 100 (Routine)
Bellbrook (East Street)	Australia	Record daily precipitation	60.2 mm (2.4 in)	30 of 100 (Routine)
Twin Hills Post Office	Australia	Record daily precipitation	51.8 mm (2.0 in)	29 of 100 (Routine)
Dalhart Exp STN	United States	Record snow depth	15.2 cm (6.0 in)	29 of 100 (Routine)
Cargo Post Office	Australia	Record daily precipitation	36.1 mm (1.4 in)	28 of 100 (Routine)
Mesa	United States	Record high minimum temperature	10.6 C (51.1 F)	28 of 100 (Routine)
Alapaha Exp STN	United States	Record low minimum temperature	-10.0 C (14.0 F)	28 of 100 (Routine)
Georgetown 2 E	United States	Record low minimum temperature	-8.9 C (16.0 F)	28 of 100 (Routine)
Tucson WFO	United States	Record high minimum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Bainbridge	United States	Record low minimum temperature	-8.3 C (17.1 F)	27 of 100 (Routine)
Yamba Pilot Station	Australia	Record daily precipitation	35.1 mm (1.4 in)	26 of 100 (Routine)
Madison	United States	Record low minimum temperature	-7.8 C (18.0 F)	26 of 100 (Routine)
St Petersburg	United States	Record low minimum temperature	2.8 C (37.0 F)	26 of 100 (Routine)
Tallapoosa 2 N	United States	Record low minimum temperature	-12.8 C (9.0 F)	26 of 100 (Routine)
Moncure 3 SE	United States	Record low minimum temperature	-16.1 C (3.0 F)	26 of 100 (Routine)
Goondiwindi Post Office	Australia	Record low maximum temperature	22.2 C (72.0 F)	25 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record low maximum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Camden 3 W	United States	Record low minimum temperature	-10.6 C (12.9 F)	25 of 100 (Routine)
Alexandria	Australia	Record daily precipitation	35.8 mm (1.4 in)	24 of 100 (Routine)
Americus	United States	Record low minimum temperature	-7.8 C (18.0 F)	24 of 100 (Routine)
Kinston 7 SE	United States	Record low minimum temperature	-14.4 C (6.1 F)	24 of 100 (Routine)
Louisburg	United States	Record low minimum temperature	-13.9 C (7.0 F)	24 of 100 (Routine)
Eutawville	United States	Record low minimum temperature	-11.7 C (10.9 F)	24 of 100 (Routine)
Mackay Post Office	Australia	Record high minimum temperature	27.2 C (81.0 F)	23 of 100 (Routine)
Madowla	Australia	Record daily precipitation	47.0 mm (1.9 in)	23 of 100 (Routine)
Ebor (Wongwibinda)	Australia	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Hilliard	United States	Record low minimum temperature	-6.7 C (19.9 F)	23 of 100 (Routine)
Henderson 2 NNW	United States	Record low minimum temperature	-12.2 C (10.0 F)	23 of 100 (Routine)
Marshall	United States	Record low minimum temperature	-16.1 C (3.0 F)	23 of 100 (Routine)
Smithfield	United States	Record low minimum temperature	-13.3 C (8.1 F)	23 of 100 (Routine)
Burra (Worlds End)	Australia	Record daily precipitation	32.3 mm (1.3 in)	22 of 100 (Routine)
Alstonville Post Office	Australia	Record daily precipitation	31.8 mm (1.3 in)	22 of 100 (Routine)
Glennville 3NW	United States	Record low minimum temperature	-7.2 C (19.0 F)	22 of 100 (Routine)
Milledgeville	United States	Record low minimum temperature	-10.0 C (14.0 F)	22 of 100 (Routine)
Austin #2	United States	Record high minimum temperature	0.6 C (33.1 F)	22 of 100 (Routine)
Rockingham	United States	Record low maximum temperature	-3.3 C (26.1 F)	22 of 100 (Routine)
Tarboro 1 S	United States	Record low minimum temperature	-12.2 C (10.0 F)	22 of 100 (Routine)
Forman 5 SSE	United States	Record high maximum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Trenton 1 NNE	United States	Record low minimum temperature	-8.3 C (17.1 F)	22 of 100 (Routine)
Yemassee 1 N	United States	Record low minimum temperature	-10.0 C (14.0 F)	22 of 100 (Routine)
Williamsburg 2 NW	United States	Record low minimum temperature	-12.8 C (9.0 F)	22 of 100 (Routine)
Woodhouse	Australia	Record daily precipitation	40.6 mm (1.6 in)	21 of 100 (Routine)
Goondiwindi Post Office	Australia	Record daily precipitation	36.3 mm (1.4 in)	21 of 100 (Routine)
Old Koreelah (White Swamp (Ede	Australia	Record daily precipitation	31.2 mm (1.2 in)	21 of 100 (Routine)
Maclean (McLachlan Street)	Australia	Record daily precipitation	34.3 mm (1.4 in)	21 of 100 (Routine)

Counts by Type and Timescale

419 records

Records set or tied on 18 December 1943 by type: Highest daily maximum 80, Lowest daily maximum 14, Highest daily minimum 54, Lowest daily minimum 122, Heaviest daily rainfall 143, Heaviest daily snowfall 1, Deepest snow cover 5.

Records on 18 December 1943 by type
Record type	Records
Highest daily maximum	80
Lowest daily maximum	14
Highest daily minimum	54
Lowest daily minimum	122
Heaviest daily rainfall	143
Heaviest daily snowfall	1
Deepest snow cover	5

Records on 18 December 1943 by timescale: all-time 0, monthly 6, daily 413.

How Much Records Were Beaten By

341 broken records

Margins by which the 341 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

18 December 1943

Top 20 records on 18 December 1943 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1943	Old Mapoon, AU	daily rain	170.7 mm (6.7 in)	121.2 mm (4.8 in)	28 years	53 of 100 (Notable)
18 December 1943	Lawn Hill, AU	daily rain	101.3 mm (4.0 in)	77.4 mm (3.0 in)	6 years	47 of 100 (Notable)
18 December 1943	Pinnaroo, AU	daily rain	26.7 mm (1.1 in)	19.6 mm (0.8 in)	25 years	46 of 100 (Notable)
18 December 1943	Douglas, ZA	daily rain	39.6 mm (1.6 in)	27.7 mm (1.1 in)	33 years	46 of 100 (Notable)
18 December 1943	Ipswich, AU	daily rain	59.4 mm (2.3 in)	29.4 mm (1.2 in)	46 years	42 of 100 (Notable)
18 December 1943	Coorada, AU	daily rain	57.2 mm (2.3 in)	45.3 mm (1.8 in)	20 years	38 of 100 (Notable)
18 December 1943	Lameroo Comparison, AU	daily rain	29.5 mm (1.2 in)	22.1 mm (0.9 in)	6 years	37 of 100 (Notable)
18 December 1943	Copeville, AU	daily rain	30.2 mm (1.2 in)	22.6 mm (0.9 in)	6 years	36 of 100 (Notable)
18 December 1943	Millmerran Post Office, AU	daily rain	68.8 mm (2.7 in)	34.3 mm (1.4 in)	20 years	36 of 100 (Notable)
18 December 1943	Ngukurr, AU	daily rain	103.1 mm (4.1 in)	68.8 mm (2.7 in)	18 years	34 of 100 (Routine)
18 December 1943	Coonamble (Nardoo), AU	daily rain	35.6 mm (1.4 in)	25.9 mm (1.0 in)	34 years	34 of 100 (Routine)
18 December 1943	Kingston SE, AU	daily rain	31.2 mm (1.2 in)	16.2 mm (0.6 in)	20 years	33 of 100 (Routine)
18 December 1943	Western Creek, AU	daily rain	56.1 mm (2.2 in)	30.2 mm (1.2 in)	16 years	33 of 100 (Routine)
18 December 1943	Jeogla Station, AU	daily rain	39.1 mm (1.5 in)	23.4 mm (0.9 in)	32 years	33 of 100 (Routine)
18 December 1943	Kindersley, CA	daily high max	5.6 C (42.1 F)	20.6 C (37.1 F)	0 years	33 of 100 (Routine)
18 December 1943	Portage la Prairie, CA	daily high min	-8.3 C (17.1 F)	17.3 C (31.1 F)	16 years	33 of 100 (Routine)
18 December 1943	Bellbrook (East Street), AU	daily rain	60.2 mm (2.4 in)	21.8 mm (0.9 in)	36 years	30 of 100 (Routine)
18 December 1943	Twin Hills Post Office, AU	daily rain	51.8 mm (2.0 in)	22.3 mm (0.9 in)	36 years	29 of 100 (Routine)
18 December 1943	Dalhart Exp STN, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	37 years	29 of 100 (Routine)
18 December 1943	Cargo Post Office, AU	daily rain	36.1 mm (1.4 in)	20.4 mm (0.8 in)	36 years	28 of 100 (Routine)

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 1943

Records set or tied on this calendar date in each year from 1793 to 1943. 1943 had 419 records.

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

Records on 12-18 in each year
Year	Records
1793	1
1796	1
1805	1
1814	1
1825	1
1846	1
1849	1
1852	2
1858	1
1859	4
1862	2
1864	1
1868	1
1873	1
1875	1
1876	2
1878	1
1881	2
1882	1
1884	2
1886	1
1887	1
1888	1
1889	4
1890	5
1892	4
1894	8
1895	1
1897	4
1898	9
1899	3
1900	2
1901	6
1902	33
1903	11
1904	25
1905	3
1906	21
1907	15
1908	16
1909	18
1910	19
1911	9
1912	33
1913	38
1914	20
1915	28
1916	57
1917	62
1918	21
1919	117
1920	77
1921	123
1922	108
1923	378
1924	480
1925	74
1926	173
1927	151
1928	165
1929	366
1930	230
1931	360
1932	353
1933	506
1934	209
1935	138
1936	466
1937	459
1938	185
1939	900
1940	242
1941	213
1942	281
1943	419
1944	191
1945	598
1946	199
1947	266
1948	354
1949	561
1950	289
1951	867
1952	450
1953	373
1954	507
1955	611
1956	333
1957	901
1958	524
1959	477
1960	477
1961	885
1962	759
1963	571
1964	840
1965	402
1966	644
1967	1,105
1968	488
1969	376
1970	502
1971	387
1972	375
1973	1,008
1974	229
1975	625
1976	459
1977	992
1978	946
1979	1,087
1980	772
1981	1,362
1982	537
1983	2,014
1984	1,439
1985	1,384
1986	875
1987	1,505
1988	1,061
1989	1,818
1990	1,367
1991	756
1992	1,045
1993	697
1994	643
1995	1,065
1996	1,833
1997	1,195
1998	863
1999	923
2000	1,572
2001	906
2002	1,437
2003	987
2004	506
2005	987
2006	1,167
2007	746
2008	1,014
2009	1,253
2010	1,322
2011	697
2012	729
2013	513
2014	556
2015	1,254
2016	1,821
2017	516
2018	464
2019	679
2020	326
2021	762
2022	536
2023	1,293
2024	780
2025	994

Download the Data

Data for records on 1943-12-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	318
20 to 40	15
40 to 60	2
60 to 80	3
80 to 100	0
100 to 120	1
120 to 140	1
140 to 160	1