Weather Records on 21 December 1940

622 weather records were set or tied worldwide on 21 December 1940. Highest significance: Puranpur, IN.

Key Facts for 21 December 1940

On 21 December 1940, 622 weather records were set or tied at long-record stations worldwide.
228 were record highs and 10 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 32 monthly and 590 daily.
Puranpur set a monthly record daily precipitation of 123.4 mm (4.9 in) on 21 December 1940.
Across 158 earlier years (1793 to 2025) the same calendar date averaged 488 records.

Record Map

622 stations

622 station records on 21 December 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 December 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Puranpur	India	Record daily precipitation	123.4 mm (4.9 in)	60 of 100 (Major)
Daltonganj	India	Record daily precipitation	41.9 mm (1.6 in)	57 of 100 (Notable)
Muscle Creek (Clendinning)	Australia	Record daily precipitation	76.2 mm (3.0 in)	55 of 100 (Notable)
Epping Chester Street	Australia	Record daily precipitation	61.5 mm (2.4 in)	55 of 100 (Notable)
Pennant Hills (Yarrara Road)	Australia	Record daily precipitation	76.2 mm (3.0 in)	55 of 100 (Notable)
Asola	India	Record daily precipitation	46.7 mm (1.8 in)	53 of 100 (Notable)
Simga	India	Record daily precipitation	34.3 mm (1.4 in)	49 of 100 (Notable)
Glengallan	Australia	Record daily precipitation	85.9 mm (3.4 in)	47 of 100 (Notable)
Gresford Post Office	Australia	Record daily precipitation	71.9 mm (2.8 in)	47 of 100 (Notable)
Newcastle Nobbys Signal Statio	Australia	Record daily precipitation	74.9 mm (2.9 in)	47 of 100 (Notable)
Khairee	India	Record daily precipitation	34.3 mm (1.4 in)	47 of 100 (Notable)
Walcha Post Office	Australia	Record daily precipitation	77.7 mm (3.1 in)	46 of 100 (Notable)
Concord Walker Hospital	Australia	Record daily precipitation	54.1 mm (2.1 in)	46 of 100 (Notable)
Stewarts River Public School	Australia	Record daily precipitation	95.0 mm (3.7 in)	45 of 100 (Notable)
Kurrajong Heights (Bells Line	Australia	Record daily precipitation	69.1 mm (2.7 in)	45 of 100 (Notable)
Leyburn Post Office	Australia	Record daily precipitation	78.7 mm (3.1 in)	44 of 100 (Notable)
Dungog Post Office	Australia	Record daily precipitation	88.4 mm (3.5 in)	43 of 100 (Notable)
Sedgefield (Bundajon)	Australia	Record daily precipitation	65.3 mm (2.6 in)	42 of 100 (Notable)
Windsor Bowling Club	Australia	Record daily precipitation	70.9 mm (2.8 in)	42 of 100 (Notable)
Gadhchiroli	India	Record daily precipitation	40.1 mm (1.6 in)	42 of 100 (Notable)
Old Koreelah (White Swamp (Ede	Australia	Record daily precipitation	43.9 mm (1.7 in)	41 of 100 (Notable)
Wingham (Lanark Close)	Australia	Record daily precipitation	86.4 mm (3.4 in)	41 of 100 (Notable)
Prospect Reservoir	Australia	Record daily precipitation	69.3 mm (2.7 in)	41 of 100 (Notable)
Richmond - Uws Hawkesbury	Australia	Record daily precipitation	54.1 mm (2.1 in)	41 of 100 (Notable)
Campbelltown 1	Australia	Record daily precipitation	43.9 mm (1.7 in)	41 of 100 (Notable)
Rajnandgaon	India	Record daily precipitation	27.2 mm (1.1 in)	41 of 100 (Notable)
Klerkskraal (Pol)	South Africa	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Tamworth Airport	Australia	Record daily precipitation	84.8 mm (3.3 in)	40 of 100 (Notable)
Tamworth West	Australia	Record daily precipitation	83.6 mm (3.3 in)	40 of 100 (Notable)
Muswellbrook (Lower Hill St)	Australia	Record daily precipitation	43.2 mm (1.7 in)	40 of 100 (Notable)
Bathurst Agricultural Station	Australia	Record daily precipitation	43.9 mm (1.7 in)	40 of 100 (Notable)
Glenara	Australia	Record daily precipitation	55.9 mm (2.2 in)	40 of 100 (Notable)
Randwick Bowling Club	Australia	Record daily precipitation	51.1 mm (2.0 in)	40 of 100 (Notable)
Sanjari	India	Record daily precipitation	48.0 mm (1.9 in)	40 of 100 (Notable)
Maitland West	Australia	Record daily precipitation	69.3 mm (2.7 in)	39 of 100 (Notable)
Pine Brush	Australia	Record daily precipitation	91.4 mm (3.6 in)	39 of 100 (Notable)
Comboyne Post Office	Australia	Record daily precipitation	71.6 mm (2.8 in)	38 of 100 (Notable)
Ellerston (Hunters Vale)	Australia	Record daily precipitation	76.2 mm (3.0 in)	38 of 100 (Notable)
Audley National Park Bottom St	Australia	Record daily precipitation	57.9 mm (2.3 in)	38 of 100 (Notable)
Hunters Hill (the Bungalow)	Australia	Record daily precipitation	51.3 mm (2.0 in)	38 of 100 (Notable)
Minto Surrey Street	Australia	Record daily precipitation	63.5 mm (2.5 in)	38 of 100 (Notable)
Nabinagar	India	Record daily precipitation	25.1 mm (1.0 in)	38 of 100 (Notable)
Bulahdelah Post Office	Australia	Record daily precipitation	78.0 mm (3.1 in)	37 of 100 (Notable)
Rouxville (Pol)	South Africa	Record daily precipitation	48.8 mm (1.9 in)	37 of 100 (Notable)
Lodi	United States	Record daily precipitation	30.5 mm (1.2 in)	37 of 100 (Notable)
Rouchel Brook	Australia	Record daily precipitation	51.3 mm (2.0 in)	36 of 100 (Notable)
Singleton Post Office	Australia	Record daily precipitation	48.3 mm (1.9 in)	36 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record daily precipitation	51.6 mm (2.0 in)	36 of 100 (Notable)
Gaya	India	Record daily precipitation	32.3 mm (1.3 in)	36 of 100 (Notable)
Makwassie	South Africa	Record daily precipitation	36.8 mm (1.4 in)	36 of 100 (Notable)
Val (Sar)	South Africa	Record daily precipitation	35.6 mm (1.4 in)	36 of 100 (Notable)
Lovely Banks (Reservoir)	Australia	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Muhammdi	India	Record daily precipitation	28.4 mm (1.1 in)	35 of 100 (Notable)
Khutar	India	Record daily precipitation	45.7 mm (1.8 in)	35 of 100 (Notable)
Gravesend Post Office	Australia	Record daily precipitation	54.1 mm (2.1 in)	34 of 100 (Routine)
Scone (Philip Street)	Australia	Record daily precipitation	53.8 mm (2.1 in)	34 of 100 (Routine)
Potts Hill Reservoir	Australia	Record daily precipitation	64.5 mm (2.5 in)	34 of 100 (Routine)
Myrniong	Australia	Record daily precipitation	40.6 mm (1.6 in)	34 of 100 (Routine)
Heinersreuth-Vollhof	Germany	Record snow depth	22.0 cm (8.7 in)	34 of 100 (Routine)
Khapari	India	Record daily precipitation	40.6 mm (1.6 in)	34 of 100 (Routine)

Counts by Type and Timescale

622 records

Records set or tied on 21 December 1940 by type: Highest daily maximum 103, Lowest daily maximum 7, Highest daily minimum 125, Lowest daily minimum 3, Heaviest daily rainfall 376, Deepest snow cover 8.

Records on 21 December 1940 by type
Record type	Records
Highest daily maximum	103
Lowest daily maximum	7
Highest daily minimum	125
Lowest daily minimum	3
Heaviest daily rainfall	376
Heaviest daily snowfall	0
Deepest snow cover	8

Records on 21 December 1940 by timescale: all-time 0, monthly 32, daily 590.

How Much Records Were Beaten By

541 broken records

Margins by which the 541 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 381.0. Ties are not counted.

Top 20 by Significance

21 December 1940

Top 20 records on 21 December 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 December 1940	Puranpur, IN	monthly rain	123.4 mm (4.9 in)	75.1 mm (3.0 in)	23 years	60 of 100 (Major)
21 December 1940	Daltonganj, IN	monthly rain	41.9 mm (1.6 in)	23.9 mm (0.9 in)	10 years	57 of 100 (Notable)
21 December 1940	Muscle Creek (Clendinning), AU	daily rain	76.2 mm (3.0 in)	55.9 mm (2.2 in)	37 years	55 of 100 (Notable)
21 December 1940	Epping Chester Street, AU	daily rain	61.5 mm (2.4 in)	48.3 mm (1.9 in)	52 years	55 of 100 (Notable)
21 December 1940	Pennant Hills (Yarrara Road), AU	daily rain	76.2 mm (3.0 in)	71.6 mm (2.8 in)	37 years	55 of 100 (Notable)
21 December 1940	Asola, IN	daily rain	46.7 mm (1.8 in)	46.7 mm (1.8 in)	34 years	53 of 100 (Notable)
21 December 1940	Simga, IN	daily rain	34.3 mm (1.4 in)	34.3 mm (1.4 in)	39 years	49 of 100 (Notable)
21 December 1940	Glengallan, AU	daily rain	85.9 mm (3.4 in)	47.5 mm (1.9 in)	13 years	47 of 100 (Notable)
21 December 1940	Gresford Post Office, AU	daily rain	71.9 mm (2.8 in)	45.2 mm (1.8 in)	44 years	47 of 100 (Notable)
21 December 1940	Newcastle Nobbys Signal Statio, AU	daily rain	74.9 mm (2.9 in)	41.9 mm (1.6 in)	40 years	47 of 100 (Notable)
21 December 1940	Khairee, IN	daily rain	34.3 mm (1.4 in)	34.3 mm (1.4 in)	34 years	47 of 100 (Notable)
21 December 1940	Walcha Post Office, AU	daily rain	77.7 mm (3.1 in)	62.5 mm (2.5 in)	1 year	46 of 100 (Notable)
21 December 1940	Concord Walker Hospital, AU	daily rain	54.1 mm (2.1 in)	47.7 mm (1.9 in)	42 years	46 of 100 (Notable)
21 December 1940	Stewarts River Public School, AU	daily rain	95.0 mm (3.7 in)	67.1 mm (2.6 in)	17 years	45 of 100 (Notable)
21 December 1940	Kurrajong Heights (Bells Line, AU	daily rain	69.1 mm (2.7 in)	46.0 mm (1.8 in)	37 years	45 of 100 (Notable)
21 December 1940	Leyburn Post Office, AU	daily rain	78.7 mm (3.1 in)	37.6 mm (1.5 in)	37 years	44 of 100 (Notable)
21 December 1940	Dungog Post Office, AU	daily rain	88.4 mm (3.5 in)	59.2 mm (2.3 in)	26 years	43 of 100 (Notable)
21 December 1940	Sedgefield (Bundajon), AU	daily rain	65.3 mm (2.6 in)	51.8 mm (2.0 in)	7 years	42 of 100 (Notable)
21 December 1940	Windsor Bowling Club, AU	daily rain	70.9 mm (2.8 in)	54.9 mm (2.2 in)	4 years	42 of 100 (Notable)
21 December 1940	Gadhchiroli, IN	daily rain	40.1 mm (1.6 in)	36.0 mm (1.4 in)	11 years	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

1793 to 1940

Records set or tied on this calendar date in each year from 1793 to 1940. 1940 had 622 records.

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

Records on 12-21 in each year
Year	Records
1793	1
1794	1
1799	1
1801	2
1808	3
1825	1
1828	1
1839	1
1846	1
1850	1
1855	7
1859	1
1860	1
1868	1
1870	1
1871	2
1874	2
1875	3
1876	1
1877	1
1878	1
1879	1
1880	1
1884	1
1886	3
1889	1
1890	4
1893	4
1894	1
1895	5
1896	3
1897	3
1898	1
1900	8
1901	15
1902	5
1903	25
1904	3
1905	15
1906	15
1907	17
1908	19
1909	20
1910	29
1911	36
1912	23
1913	11
1914	107
1915	43
1916	40
1917	18
1918	41
1919	57
1920	30
1921	104
1922	34
1923	323
1924	377
1925	120
1926	178
1927	147
1928	70
1929	156
1930	66
1931	556
1932	150
1933	581
1934	230
1935	398
1936	323
1937	189
1938	145
1939	140
1940	622
1941	651
1942	968
1943	148
1944	762
1945	396
1946	495
1947	700
1948	297
1949	1,281
1950	504
1951	1,061
1952	197
1953	256
1954	444
1955	888
1956	672
1957	846
1958	516
1959	272
1960	585
1961	254
1962	563
1963	1,137
1964	613
1965	247
1966	400
1967	1,923
1968	818
1969	828
1970	547
1971	680
1972	651
1973	1,292
1974	374
1975	548
1976	446
1977	470
1978	517
1979	558
1980	726
1981	1,476
1982	702
1983	3,324
1984	1,012
1985	979
1986	404
1987	775
1988	717
1989	3,203
1990	2,701
1991	1,125
1992	751
1993	967
1994	793
1995	878
1996	1,114
1997	810
1998	1,142
1999	851
2000	944
2001	650
2002	579
2003	1,103
2004	675
2005	606
2006	1,443
2007	946
2008	1,062
2009	1,097
2010	2,039
2011	653
2012	759
2013	1,029
2014	878
2015	1,173
2016	543
2017	459
2018	742
2019	755
2020	965
2021	323
2022	528
2023	1,170
2024	778
2025	1,099

Download the Data

Data for records on 1940-12-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 50	526
50 to 100	12
100 to 150	1
150 to 200	1
200 to 250	0
250 to 300	0
300 to 350	0
350 to 400	1