Weather Records on 20 December 1940

965 weather records were set or tied worldwide on 20 December 1940. Highest significance: Goonoo Goonoo Station, AU.

Key Facts for 20 December 1940

On 20 December 1940, 965 weather records were set or tied at long-record stations worldwide.
183 were record highs and 13 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 22 monthly and 943 daily.
Goonoo Goonoo Station set a daily record precipitation of 71.6 mm (2.8 in) on 20 December 1940.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 464 records.

Record Map

965 stations

965 station records on 20 December 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Goonoo Goonoo Station	Australia	Record daily precipitation	71.6 mm (2.8 in)	56 of 100 (Notable)
Maffra Shire Hall	Australia	Record daily precipitation	66.8 mm (2.6 in)	55 of 100 (Notable)
Maffra Forestry Office	Australia	Record daily precipitation	58.9 mm (2.3 in)	55 of 100 (Notable)
Jindabyne Public School	Australia	Record daily precipitation	39.4 mm (1.6 in)	53 of 100 (Notable)
Dargo	Australia	Record daily precipitation	46.0 mm (1.8 in)	52 of 100 (Notable)
Bacchus Marsh	Australia	Record daily precipitation	32.5 mm (1.3 in)	51 of 100 (Notable)
Phulpur	India	Record daily precipitation	37.8 mm (1.5 in)	51 of 100 (Notable)
Valencia Creek (Bulgar Park)	Australia	Record daily precipitation	55.1 mm (2.2 in)	50 of 100 (Notable)
Mau	India	Record daily precipitation	34.3 mm (1.4 in)	50 of 100 (Notable)
Walhalla	Australia	Record daily precipitation	51.8 mm (2.0 in)	49 of 100 (Notable)
Sirathu	India	Record daily precipitation	38.1 mm (1.5 in)	48 of 100 (Notable)
Ricardo	United States	Record daily precipitation	69.9 mm (2.8 in)	48 of 100 (Notable)
Redding Fire STN 2	United States	Record daily precipitation	105.2 mm (4.1 in)	46 of 100 (Notable)
Runge	United States	Record daily precipitation	71.6 mm (2.8 in)	46 of 100 (Notable)
Sarsfield	Australia	Record daily precipitation	50.0 mm (2.0 in)	45 of 100 (Notable)
Warrion	Australia	Record daily precipitation	28.7 mm (1.1 in)	45 of 100 (Notable)
Riddle	United States	Record daily precipitation	57.2 mm (2.3 in)	45 of 100 (Notable)
Jindabyne West (Hiawatha)	Australia	Record daily precipitation	36.1 mm (1.4 in)	44 of 100 (Notable)
Buchan	Australia	Record daily precipitation	58.9 mm (2.3 in)	44 of 100 (Notable)
Reedy Flat	Australia	Record daily precipitation	47.2 mm (1.9 in)	44 of 100 (Notable)
Mandla	India	Record daily precipitation	45.0 mm (1.8 in)	44 of 100 (Notable)
Heyfield State School	Australia	Record daily precipitation	60.5 mm (2.4 in)	43 of 100 (Notable)
Goorangoola	Australia	Record daily precipitation	65.3 mm (2.6 in)	42 of 100 (Notable)
Minimay (Booroopki)	Australia	Record daily precipitation	26.7 mm (1.1 in)	42 of 100 (Notable)
Ballan	Australia	Record daily precipitation	29.5 mm (1.2 in)	42 of 100 (Notable)
Melton	Australia	Record daily precipitation	30.2 mm (1.2 in)	42 of 100 (Notable)
Mount Moriac	Australia	Record daily precipitation	30.2 mm (1.2 in)	42 of 100 (Notable)
Poolaijelo	Australia	Record daily precipitation	26.2 mm (1.0 in)	42 of 100 (Notable)
Geelong Sec	Australia	Record daily precipitation	31.0 mm (1.2 in)	41 of 100 (Notable)
Bushy Park	Australia	Record daily precipitation	62.0 mm (2.4 in)	40 of 100 (Notable)
Giffard	Australia	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Deer Park	Australia	Record daily precipitation	30.0 mm (1.2 in)	40 of 100 (Notable)
Meredith (Wattle Vale)	Australia	Record daily precipitation	31.8 mm (1.3 in)	40 of 100 (Notable)
Berrybank	Australia	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Thule	Australia	Record daily precipitation	27.2 mm (1.1 in)	40 of 100 (Notable)
Trawalla	Australia	Record daily precipitation	29.2 mm (1.1 in)	39 of 100 (Notable)
Sihora Sr	India	Record daily precipitation	35.6 mm (1.4 in)	39 of 100 (Notable)
Delegate Post Office	Australia	Record daily precipitation	27.7 mm (1.1 in)	38 of 100 (Notable)
Sheep Hills	Australia	Record daily precipitation	27.9 mm (1.1 in)	38 of 100 (Notable)
Murrungowar	Australia	Record daily precipitation	35.6 mm (1.4 in)	38 of 100 (Notable)
Centennial Park	Australia	Record daily precipitation	54.6 mm (2.1 in)	37 of 100 (Notable)
Narracan East (Lynnsmere)	Australia	Record daily precipitation	40.6 mm (1.6 in)	37 of 100 (Notable)
Rosedale	Australia	Record daily precipitation	56.1 mm (2.2 in)	37 of 100 (Notable)
Birregurra (Post Office)	Australia	Record daily precipitation	28.2 mm (1.1 in)	37 of 100 (Notable)
Karwi	India	Record daily precipitation	41.1 mm (1.6 in)	37 of 100 (Notable)
New Market	South Africa	Record daily precipitation	49.8 mm (2.0 in)	37 of 100 (Notable)
Cargo Post Office	Australia	Record daily precipitation	38.9 mm (1.5 in)	36 of 100 (Notable)
Moormurang the Ridge	Australia	Record daily precipitation	45.5 mm (1.8 in)	36 of 100 (Notable)
French Island (Tankerton)	Australia	Record daily precipitation	31.2 mm (1.2 in)	36 of 100 (Notable)
Geelong Salines (Moolap)	Australia	Record daily precipitation	30.7 mm (1.2 in)	36 of 100 (Notable)
Buckland Downs	South Africa	Record daily precipitation	63.5 mm (2.5 in)	36 of 100 (Notable)
Hollowaysrust	South Africa	Record daily precipitation	36.6 mm (1.4 in)	36 of 100 (Notable)
Heidelberg I	South Africa	Record daily precipitation	57.9 mm (2.3 in)	36 of 100 (Notable)
Crescent City 3 NNW	United States	Record daily precipitation	99.1 mm (3.9 in)	36 of 100 (Notable)
Pearsall	United States	Record daily precipitation	36.8 mm (1.4 in)	36 of 100 (Notable)
Peak Hill (Bruie Plains)	Australia	Record daily precipitation	33.3 mm (1.3 in)	35 of 100 (Notable)
Beeac (Post Office)	Australia	Record daily precipitation	25.7 mm (1.0 in)	35 of 100 (Notable)
Colac (Shire Office)	Australia	Record daily precipitation	25.7 mm (1.0 in)	35 of 100 (Notable)
Bhabua	India	Record daily precipitation	31.2 mm (1.2 in)	35 of 100 (Notable)
Paupong Station	Australia	Record daily precipitation	43.7 mm (1.7 in)	34 of 100 (Routine)

Counts by Type and Timescale

965 records

Records set or tied on 20 December 1940 by type: Highest daily maximum 72, Lowest daily maximum 6, Highest daily minimum 111, Lowest daily minimum 7, Heaviest daily rainfall 752, Heaviest daily snowfall 1, Deepest snow cover 16.

Records on 20 December 1940 by type
Record type	Records
Highest daily maximum	72
Lowest daily maximum	6
Highest daily minimum	111
Lowest daily minimum	7
Heaviest daily rainfall	752
Heaviest daily snowfall	1
Deepest snow cover	16

Records on 20 December 1940 by timescale: all-time 0, monthly 22, daily 943.

How Much Records Were Beaten By

870 broken records

Margins by which the 870 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

20 December 1940

Top 20 records on 20 December 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 1940	Goonoo Goonoo Station, AU	daily rain	71.6 mm (2.8 in)	55.3 mm (2.2 in)	42 years	56 of 100 (Notable)
20 December 1940	Maffra Shire Hall, AU	daily rain	66.8 mm (2.6 in)	51.6 mm (2.0 in)	30 years	55 of 100 (Notable)
20 December 1940	Maffra Forestry Office, AU	daily rain	58.9 mm (2.3 in)	50.0 mm (2.0 in)	38 years	55 of 100 (Notable)
20 December 1940	Jindabyne Public School, AU	daily rain	39.4 mm (1.6 in)	37.4 mm (1.5 in)	30 years	53 of 100 (Notable)
20 December 1940	Dargo, AU	daily rain	46.0 mm (1.8 in)	33.3 mm (1.3 in)	51 years	52 of 100 (Notable)
20 December 1940	Bacchus Marsh, AU	daily rain	32.5 mm (1.3 in)	26.1 mm (1.0 in)	50 years	51 of 100 (Notable)
20 December 1940	Phulpur, IN	monthly rain	37.8 mm (1.5 in)	19.3 mm (0.8 in)	9 years	51 of 100 (Notable)
20 December 1940	Valencia Creek (Bulgar Park), AU	daily rain	55.1 mm (2.2 in)	43.7 mm (1.7 in)	26 years	50 of 100 (Notable)
20 December 1940	Mau, IN	monthly rain	34.3 mm (1.4 in)	14.0 mm (0.6 in)	36 years	50 of 100 (Notable)
20 December 1940	Walhalla, AU	daily rain	51.8 mm (2.0 in)	34.0 mm (1.3 in)	50 years	49 of 100 (Notable)
20 December 1940	Sirathu, IN	monthly rain	38.1 mm (1.5 in)	14.5 mm (0.6 in)	36 years	48 of 100 (Notable)
20 December 1940	Ricardo, US	daily rain	69.9 mm (2.8 in)	58.0 mm (2.3 in)	31 years	48 of 100 (Notable)
20 December 1940	Redding Fire STN 2, US	daily rain	105.2 mm (4.1 in)	68.1 mm (2.7 in)	9 years	46 of 100 (Notable)
20 December 1940	Runge, US	daily rain	71.6 mm (2.8 in)	57.6 mm (2.3 in)	12 years	46 of 100 (Notable)
20 December 1940	Sarsfield, AU	daily rain	50.0 mm (2.0 in)	38.3 mm (1.5 in)	22 years	45 of 100 (Notable)
20 December 1940	Warrion, AU	daily rain	28.7 mm (1.1 in)	21.3 mm (0.8 in)	38 years	45 of 100 (Notable)
20 December 1940	Riddle, US	daily rain	57.2 mm (2.3 in)	39.2 mm (1.5 in)	21 years	45 of 100 (Notable)
20 December 1940	Jindabyne West (Hiawatha), AU	daily rain	36.1 mm (1.4 in)	27.2 mm (1.1 in)	53 years	44 of 100 (Notable)
20 December 1940	Buchan, AU	daily rain	58.9 mm (2.3 in)	33.5 mm (1.3 in)	50 years	44 of 100 (Notable)
20 December 1940	Reedy Flat, AU	daily rain	47.2 mm (1.9 in)	41.1 mm (1.6 in)	22 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 1940

Records set or tied on this calendar date in each year from 1793 to 1940. 1940 had 965 records.

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

Records on 12-20 in each year
Year	Records
1793	1
1795	1
1804	1
1805	2
1808	1
1815	1
1828	1
1837	1
1846	1
1855	8
1858	1
1860	1
1866	1
1867	1
1868	1
1869	1
1871	2
1874	3
1875	1
1877	2
1878	1
1879	1
1880	1
1881	1
1882	1
1884	4
1885	1
1886	4
1889	4
1890	2
1891	2
1892	1
1894	2
1895	8
1896	1
1897	4
1898	2
1899	1
1900	7
1901	8
1902	14
1903	17
1904	9
1905	5
1906	5
1907	11
1908	5
1909	22
1910	17
1911	24
1912	27
1913	7
1914	43
1915	18
1916	45
1917	33
1918	18
1919	25
1920	22
1921	101
1922	88
1923	215
1924	332
1925	96
1926	163
1927	200
1928	93
1929	256
1930	67
1931	536
1932	170
1933	492
1934	265
1935	152
1936	416
1937	181
1938	240
1939	308
1940	965
1941	633
1942	817
1943	193
1944	340
1945	430
1946	327
1947	385
1948	345
1949	1,141
1950	758
1951	926
1952	394
1953	385
1954	416
1955	726
1956	471
1957	1,354
1958	382
1959	142
1960	354
1961	369
1962	475
1963	875
1964	499
1965	353
1966	555
1967	1,370
1968	482
1969	514
1970	518
1971	441
1972	448
1973	1,184
1974	328
1975	610
1976	382
1977	484
1978	910
1979	600
1980	667
1981	1,681
1982	712
1983	2,995
1984	1,411
1985	1,035
1986	321
1987	1,179
1988	760
1989	1,812
1990	1,885
1991	1,172
1992	1,134
1993	1,266
1994	813
1995	1,128
1996	1,448
1997	651
1998	1,110
1999	938
2000	1,150
2001	523
2002	943
2003	1,315
2004	836
2005	515
2006	1,387
2007	986
2008	1,356
2009	1,502
2010	2,055
2011	846
2012	1,131
2013	584
2014	524
2015	1,238
2016	603
2017	688
2018	592
2019	731
2020	554
2021	442
2022	567
2023	1,242
2024	897
2025	1,166

Download the Data

Data for records on 1940-12-20: 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	858
50 to 100	9
100 to 150	2
150 to 200	0
200 to 250	0
250 to 300	1