Weather Records on 18 December 1949

561 weather records were set or tied worldwide on 18 December 1949. Highest significance: Gorlitz, DE.

Key Facts for 18 December 1949

On 18 December 1949, 561 weather records were set or tied at long-record stations worldwide.
135 were record highs and 35 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 548 daily.
Gorlitz set a daily record precipitation of 28.8 mm (1.1 in) on 18 December 1949.
Across 156 earlier years (1793 to 2025) the same calendar date averaged 479 records.

Record Map

561 stations

561 station records on 18 December 1949 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 December 1949: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gorlitz	Germany	Record daily precipitation	28.8 mm (1.1 in)	61 of 100 (Major)
Olga 2 SE	United States	Record daily snowfall	10.2 cm (4.0 in)	57 of 100 (Notable)
Mochudi	Botswana	Record daily precipitation	71.1 mm (2.8 in)	53 of 100 (Notable)
Lichtenburg	South Africa	Record daily precipitation	66.0 mm (2.6 in)	53 of 100 (Notable)
Krugersdorp	South Africa	Record daily precipitation	73.2 mm (2.9 in)	53 of 100 (Notable)
Germiston-Fj Payne Park	South Africa	Record daily precipitation	61.7 mm (2.4 in)	53 of 100 (Notable)
Boksburg (Mun)	South Africa	Record daily precipitation	66.8 mm (2.6 in)	53 of 100 (Notable)
Springkell	South Africa	Record daily precipitation	58.9 mm (2.3 in)	52 of 100 (Notable)
James Island	Canada	Record daily snowfall	17.8 cm (7.0 in)	51 of 100 (Notable)
Derby	South Africa	Record daily precipitation	75.9 mm (3.0 in)	49 of 100 (Notable)
Welbedacht Agric Office	South Africa	Record daily precipitation	69.3 mm (2.7 in)	49 of 100 (Notable)
Parys (Mun)	South Africa	Record daily precipitation	61.7 mm (2.4 in)	48 of 100 (Notable)
Rietfontein	South Africa	Record daily precipitation	50.3 mm (2.0 in)	48 of 100 (Notable)
Zwartruggens (Pol)	South Africa	Record daily precipitation	63.5 mm (2.5 in)	48 of 100 (Notable)
Avoca	South Africa	Record daily precipitation	58.2 mm (2.3 in)	47 of 100 (Notable)
Avery Rs	United States	Record daily snowfall	27.9 cm (11.0 in)	47 of 100 (Notable)
Beaumont City	United States	Record daily precipitation	111.3 mm (4.4 in)	47 of 100 (Notable)
Kapoho 93	United States	Record daily precipitation	142.2 mm (5.6 in)	47 of 100 (Notable)
Oorsprong-Oos	South Africa	Record daily precipitation	68.6 mm (2.7 in)	46 of 100 (Notable)
Cedar Lake	United States	Record daily snowfall	22.9 cm (9.0 in)	46 of 100 (Notable)
Slurry	South Africa	Record daily precipitation	63.2 mm (2.5 in)	45 of 100 (Notable)
Fitzroy Crossing Comp.	Australia	Record daily precipitation	68.1 mm (2.7 in)	44 of 100 (Notable)
Dinokana	South Africa	Record daily precipitation	45.7 mm (1.8 in)	43 of 100 (Notable)
Koolau Dam 833	United States	Record daily precipitation	131.1 mm (5.2 in)	43 of 100 (Notable)
Brandwag	South Africa	Record daily precipitation	41.9 mm (1.6 in)	42 of 100 (Notable)
Zamenkomst	South Africa	Record daily precipitation	53.3 mm (2.1 in)	41 of 100 (Notable)
Welverdiend (Pol)	South Africa	Record daily precipitation	49.5 mm (1.9 in)	41 of 100 (Notable)
Klipspruit (Pur)	South Africa	Record daily precipitation	50.3 mm (2.0 in)	41 of 100 (Notable)
Anahuac	United States	Record daily precipitation	138.4 mm (5.4 in)	41 of 100 (Notable)
Durban Roodepoort Deep Gm	South Africa	Record daily precipitation	54.6 mm (2.1 in)	40 of 100 (Notable)
Donkerhoek-Rainhill	South Africa	Record daily precipitation	69.3 mm (2.7 in)	40 of 100 (Notable)
Klipplaatdrift (Skl)	South Africa	Record daily precipitation	48.5 mm (1.9 in)	39 of 100 (Notable)
Mmabatho Arpt	South Africa	Record daily precipitation	54.1 mm (2.1 in)	39 of 100 (Notable)
Snake Creek Powerhouse	United States	Record daily precipitation	31.5 mm (1.2 in)	39 of 100 (Notable)
Twyfelspoort	South Africa	Record daily precipitation	52.8 mm (2.1 in)	38 of 100 (Notable)
Long Beach Pub Svc	United States	Record daily precipitation	63.8 mm (2.5 in)	38 of 100 (Notable)
Powell Creek	Australia	Record daily precipitation	105.4 mm (4.1 in)	37 of 100 (Notable)
Jhb-Joubert Park	South Africa	Record daily precipitation	44.2 mm (1.7 in)	37 of 100 (Notable)
Heber	United States	Record daily precipitation	31.0 mm (1.2 in)	37 of 100 (Notable)
Herschel	South Africa	Record daily precipitation	57.2 mm (2.3 in)	36 of 100 (Notable)
Aakukui 1007	United States	Record daily precipitation	65.5 mm (2.6 in)	36 of 100 (Notable)
Zastron (Tnk)	South Africa	Record daily precipitation	41.7 mm (1.6 in)	35 of 100 (Notable)
Koster (Pol)	South Africa	Record daily precipitation	51.8 mm (2.0 in)	35 of 100 (Notable)
Zion Np	United States	Record daily precipitation	29.5 mm (1.2 in)	35 of 100 (Notable)
Snake Creek Powerhouse	United States	Record daily snowfall	35.6 cm (14.0 in)	34 of 100 (Routine)
Snoqualmie Falls	United States	Record daily snowfall	7.6 cm (3.0 in)	34 of 100 (Routine)
Jhb-Braamfontein (Cem)	South Africa	Record daily precipitation	48.5 mm (1.9 in)	33 of 100 (Routine)
Lake Yellowstone	United States	Record daily snowfall	10.2 cm (4.0 in)	33 of 100 (Routine)
Mount McDonald	Australia	Record daily precipitation	44.5 mm (1.8 in)	32 of 100 (Routine)
Cidra 1 E	Puerto Rico [United States]	Record daily precipitation	57.7 mm (2.3 in)	32 of 100 (Routine)
Haugan 1 W	United States	Record daily snowfall	22.9 cm (9.0 in)	32 of 100 (Routine)
Hebgen Dam	United States	Record daily snowfall	25.4 cm (10.0 in)	32 of 100 (Routine)
Kekaha 944	United States	Record daily precipitation	69.3 mm (2.7 in)	32 of 100 (Routine)
New Market	South Africa	Record daily precipitation	38.9 mm (1.5 in)	31 of 100 (Routine)
Missoula 6 NW WFO	United States	Record daily snowfall	8.9 cm (3.5 in)	31 of 100 (Routine)
Prospect 2 SW	United States	Record daily snowfall	15.2 cm (6.0 in)	31 of 100 (Routine)
Palmas de Monte Alto	Brazil	Record daily precipitation	112.3 mm (4.4 in)	30 of 100 (Routine)
Claresholm Meadow Creek	Canada	Record daily snowfall	8.9 cm (3.5 in)	30 of 100 (Routine)
Sweetwater	South Africa	Record daily precipitation	42.2 mm (1.7 in)	30 of 100 (Routine)
North End	South Africa	Record daily precipitation	36.1 mm (1.4 in)	30 of 100 (Routine)

Counts by Type and Timescale

561 records

Records set or tied on 18 December 1949 by type: Highest daily maximum 20, Lowest daily maximum 25, Highest daily minimum 115, Lowest daily minimum 10, Heaviest daily rainfall 315, Heaviest daily snowfall 72, Deepest snow cover 4.

Records on 18 December 1949 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	25
Highest daily minimum	115
Lowest daily minimum	10
Heaviest daily rainfall	315
Heaviest daily snowfall	72
Deepest snow cover	4

Records on 18 December 1949 by timescale: all-time 0, monthly 13, daily 548.

How Much Records Were Beaten By

483 broken records

Margins by which the 483 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 229.0. Ties are not counted.

Top 20 by Significance

18 December 1949

Top 20 records on 18 December 1949 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1949	Gorlitz, DE	daily rain	28.8 mm (1.1 in)	20.3 mm (0.8 in)	47 years	61 of 100 (Major)
18 December 1949	Olga 2 SE, US	daily snowfall	10.2 cm (4.0 in)	8.9 cm (3.5 in)	53 years	57 of 100 (Notable)
18 December 1949	Mochudi, BW	daily rain	71.1 mm (2.8 in)	55.1 mm (2.2 in)	35 years	53 of 100 (Notable)
18 December 1949	Lichtenburg, ZA	daily rain	66.0 mm (2.6 in)	48.2 mm (1.9 in)	32 years	53 of 100 (Notable)
18 December 1949	Krugersdorp, ZA	daily rain	73.2 mm (2.9 in)	52.6 mm (2.1 in)	32 years	53 of 100 (Notable)
18 December 1949	Germiston-Fj Payne Park, ZA	daily rain	61.7 mm (2.4 in)	49.0 mm (1.9 in)	32 years	53 of 100 (Notable)
18 December 1949	Boksburg (Mun), ZA	daily rain	66.8 mm (2.6 in)	46.0 mm (1.8 in)	32 years	53 of 100 (Notable)
18 December 1949	Springkell, ZA	daily rain	58.9 mm (2.3 in)	49.0 mm (1.9 in)	32 years	52 of 100 (Notable)
18 December 1949	James Island, CA	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	35 years	51 of 100 (Notable)
18 December 1949	Derby, ZA	daily rain	75.9 mm (3.0 in)	50.5 mm (2.0 in)	32 years	49 of 100 (Notable)
18 December 1949	Welbedacht Agric Office, ZA	daily rain	69.3 mm (2.7 in)	59.1 mm (2.3 in)	20 years	49 of 100 (Notable)
18 December 1949	Parys (Mun), ZA	daily rain	61.7 mm (2.4 in)	38.8 mm (1.5 in)	32 years	48 of 100 (Notable)
18 December 1949	Rietfontein, ZA	daily rain	50.3 mm (2.0 in)	42.7 mm (1.7 in)	31 years	48 of 100 (Notable)
18 December 1949	Zwartruggens (Pol), ZA	daily rain	63.5 mm (2.5 in)	55.9 mm (2.2 in)	14 years	48 of 100 (Notable)
18 December 1949	Avoca, ZA	daily rain	58.2 mm (2.3 in)	29.8 mm (1.2 in)	59 years	47 of 100 (Notable)
18 December 1949	Avery Rs, US	daily snowfall	27.9 cm (11.0 in)	18.2 cm (7.2 in)	32 years	47 of 100 (Notable)
18 December 1949	Beaumont City, US	daily rain	111.3 mm (4.4 in)	80.6 mm (3.2 in)	16 years	47 of 100 (Notable)
18 December 1949	Kapoho 93, US	daily rain	142.2 mm (5.6 in)	82.5 mm (3.2 in)	40 years	47 of 100 (Notable)
18 December 1949	Oorsprong-Oos, ZA	daily rain	68.6 mm (2.7 in)	56.4 mm (2.2 in)	11 years	46 of 100 (Notable)
18 December 1949	Cedar Lake, US	daily snowfall	22.9 cm (9.0 in)	22.9 cm (9.0 in)	50 years	46 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 1949

Records set or tied on this calendar date in each year from 1793 to 1949. 1949 had 561 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 1949-12-18: 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 50	445
50 to 100	26
100 to 150	7
150 to 200	4
200 to 250	1