Weather Records on 12 April 1940

1,407 weather records were set or tied worldwide on 12 April 1940. Highest significance: Byrock Post Office, AU.

Key Facts for 12 April 1940

On 12 April 1940, 1,407 weather records were set or tied at long-record stations worldwide.
114 were record highs and 934 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 64 monthly and 1,343 daily.
Byrock Post Office set a daily record precipitation of 48.3 mm (1.9 in) on 12 April 1940.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 496 records.

Record Map

1,407 stations

1,407 station records on 12 April 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 April 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Byrock Post Office	Australia	Record daily precipitation	48.3 mm (1.9 in)	55 of 100 (Notable)
Narromine (Alagalah St)	Australia	Record daily precipitation	55.9 mm (2.2 in)	54 of 100 (Notable)
Dubbo (Darling Street)	Australia	Record daily precipitation	59.7 mm (2.4 in)	52 of 100 (Notable)
Hermidale Tank	Australia	Record daily precipitation	32.0 mm (1.3 in)	49 of 100 (Notable)
Quabathoo	Australia	Record daily precipitation	47.0 mm (1.9 in)	49 of 100 (Notable)
Mungeribar	Australia	Record daily precipitation	57.2 mm (2.3 in)	48 of 100 (Notable)
Geurie Post Office	Australia	Record daily precipitation	36.8 mm (1.4 in)	48 of 100 (Notable)
Suntop	Australia	Record daily precipitation	52.1 mm (2.1 in)	48 of 100 (Notable)
Edithville	Australia	Record daily precipitation	50.5 mm (2.0 in)	47 of 100 (Notable)
Erambie	Australia	Record daily precipitation	38.1 mm (1.5 in)	46 of 100 (Notable)
Yeoval Post Office	Australia	Record daily precipitation	42.9 mm (1.7 in)	46 of 100 (Notable)
The Forks	United States	Record daily precipitation	48.8 mm (1.9 in)	46 of 100 (Notable)
Yellow Mountain	Australia	Record daily precipitation	38.1 mm (1.5 in)	45 of 100 (Notable)
Combogolong	Australia	Record daily precipitation	42.7 mm (1.7 in)	45 of 100 (Notable)
Walgett (Euroka)	Australia	Record daily precipitation	47.2 mm (1.9 in)	45 of 100 (Notable)
Stuart Town	Australia	Record daily precipitation	51.3 mm (2.0 in)	45 of 100 (Notable)
Waterville Wwtp	United States	Record daily precipitation	89.7 mm (3.5 in)	44 of 100 (Notable)
Hargraves (Weeroona)	Australia	Record daily precipitation	50.0 mm (2.0 in)	43 of 100 (Notable)
Shearleys Tank	Australia	Record daily precipitation	33.0 mm (1.3 in)	42 of 100 (Notable)
Peak Hill Post Office	Australia	Record daily precipitation	38.4 mm (1.5 in)	42 of 100 (Notable)
Hermidale (Gilgai)	Australia	Record daily precipitation	29.0 mm (1.1 in)	42 of 100 (Notable)
Warren (Mumblebone)	Australia	Record daily precipitation	35.8 mm (1.4 in)	42 of 100 (Notable)
Dundullimal	Australia	Record daily precipitation	44.7 mm (1.8 in)	42 of 100 (Notable)
Orange (McLaughlin St)	Australia	Record daily precipitation	32.8 mm (1.3 in)	41 of 100 (Notable)
Orange 3	Australia	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Wilbertree 2	Australia	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Summervale (Gundaur)	Australia	Record daily precipitation	43.2 mm (1.7 in)	40 of 100 (Notable)
Arthurville (Cramond)	Australia	Record daily precipitation	54.4 mm (2.1 in)	40 of 100 (Notable)
Buffalo	United States	Record daily snowfall	12.7 cm (5.0 in)	40 of 100 (Notable)
Cumnock (Willow Park)	Australia	Record daily precipitation	49.8 mm (2.0 in)	39 of 100 (Notable)
Lockport 2SE	United States	Record daily snowfall	12.7 cm (5.0 in)	39 of 100 (Notable)
Curraweena	Australia	Record daily precipitation	38.9 mm (1.5 in)	38 of 100 (Notable)
Bodangora Post Office	Australia	Record daily precipitation	55.9 mm (2.2 in)	38 of 100 (Notable)
Bathurst Gaol	Australia	Record high minimum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Dubbo (Mentone)	Australia	Record daily precipitation	45.2 mm (1.8 in)	37 of 100 (Notable)
Peak Hill (Bruie Plains)	Australia	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
Gilgandra (Berida)	Australia	Record daily precipitation	41.4 mm (1.6 in)	36 of 100 (Notable)
Coorabulka	Australia	Record daily precipitation	47.0 mm (1.9 in)	35 of 100 (Notable)
Miandetta (Tyrone)	Australia	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Nyngan (Canonbar)	Australia	Record daily precipitation	31.5 mm (1.2 in)	35 of 100 (Notable)
Neilrex (Caigan)	Australia	Record daily precipitation	43.2 mm (1.7 in)	35 of 100 (Notable)
Louth (Bloxham Street)	Australia	Record daily precipitation	28.4 mm (1.1 in)	34 of 100 (Routine)
Carinda Post Office	Australia	Record daily precipitation	41.9 mm (1.6 in)	34 of 100 (Routine)
Gulargambone (Emby)	Australia	Record daily precipitation	57.4 mm (2.3 in)	34 of 100 (Routine)
Coonamble (Pier Pier)	Australia	Record daily precipitation	53.3 mm (2.1 in)	34 of 100 (Routine)
Walgett Council Depot	Australia	Record daily precipitation	37.1 mm (1.5 in)	34 of 100 (Routine)
Katella	Australia	Record daily precipitation	41.4 mm (1.6 in)	34 of 100 (Routine)
Chicoutimi	Canada	Record daily snowfall	13.0 cm (5.1 in)	34 of 100 (Routine)
Woodstock	Canada	Record daily precipitation	42.4 mm (1.7 in)	34 of 100 (Routine)
Avon	United States	Record daily precipitation	30.5 mm (1.2 in)	34 of 100 (Routine)
Dennison Wtr Wks	United States	Record daily precipitation	26.9 mm (1.1 in)	34 of 100 (Routine)
Marion 2 N	United States	Record snow depth	10.2 cm (4.0 in)	33 of 100 (Routine)
Napoleon	United States	Record daily snowfall	7.6 cm (3.0 in)	33 of 100 (Routine)
Nymagee (Kenmure Station)	Australia	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Shepherds Creek	Australia	Record daily precipitation	31.0 mm (1.2 in)	32 of 100 (Routine)
Marran	Australia	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Wellington (Springfield)	Australia	Record daily precipitation	76.2 mm (3.0 in)	32 of 100 (Routine)
Gundaroo (Bairnsdale)	Australia	Record daily precipitation	38.1 mm (1.5 in)	32 of 100 (Routine)
Chugwater	United States	Record low minimum temperature	-22.8 C (-9.0 F)	32 of 100 (Routine)
Alice Springs Post Office	Australia	Record low maximum temperature	16.6 C (61.9 F)	31 of 100 (Routine)

Counts by Type and Timescale

1,407 records

Records set or tied on 12 April 1940 by type: Highest daily maximum 64, Lowest daily maximum 374, Highest daily minimum 50, Lowest daily minimum 560, Heaviest daily rainfall 301, Heaviest daily snowfall 40, Deepest snow cover 18.

Records on 12 April 1940 by type
Record type	Records
Highest daily maximum	64
Lowest daily maximum	374
Highest daily minimum	50
Lowest daily minimum	560
Heaviest daily rainfall	301
Heaviest daily snowfall	40
Deepest snow cover	18

Records on 12 April 1940 by timescale: all-time 0, monthly 64, daily 1,343.

How Much Records Were Beaten By

1,184 broken records

Margins by which the 1,184 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.0. Ties are not counted.

Top 20 by Significance

12 April 1940

Top 20 records on 12 April 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 April 1940	Byrock Post Office, AU	daily rain	48.3 mm (1.9 in)	48.3 mm (1.9 in)	48 years	55 of 100 (Notable)
12 April 1940	Narromine (Alagalah St), AU	daily rain	55.9 mm (2.2 in)	52.1 mm (2.1 in)	35 years	54 of 100 (Notable)
12 April 1940	Dubbo (Darling Street), AU	daily rain	59.7 mm (2.4 in)	37.9 mm (1.5 in)	53 years	52 of 100 (Notable)
12 April 1940	Hermidale Tank, AU	daily rain	32.0 mm (1.3 in)	32.0 mm (1.3 in)	34 years	49 of 100 (Notable)
12 April 1940	Quabathoo, AU	daily rain	47.0 mm (1.9 in)	38.6 mm (1.5 in)	53 years	49 of 100 (Notable)
12 April 1940	Mungeribar, AU	daily rain	57.2 mm (2.3 in)	49.6 mm (2.0 in)	35 years	48 of 100 (Notable)
12 April 1940	Geurie Post Office, AU	daily rain	36.8 mm (1.4 in)	33.8 mm (1.3 in)	29 years	48 of 100 (Notable)
12 April 1940	Suntop, AU	daily rain	52.1 mm (2.1 in)	45.5 mm (1.8 in)	35 years	48 of 100 (Notable)
12 April 1940	Edithville, AU	daily rain	50.5 mm (2.0 in)	50.5 mm (2.0 in)	31 years	47 of 100 (Notable)
12 April 1940	Erambie, AU	daily rain	38.1 mm (1.5 in)	34.8 mm (1.4 in)	35 years	46 of 100 (Notable)
12 April 1940	Yeoval Post Office, AU	daily rain	42.9 mm (1.7 in)	38.8 mm (1.5 in)	35 years	46 of 100 (Notable)
12 April 1940	The Forks, US	daily rain	48.8 mm (1.9 in)	37.9 mm (1.5 in)	15 years	46 of 100 (Notable)
12 April 1940	Yellow Mountain, AU	daily rain	38.1 mm (1.5 in)	33.3 mm (1.3 in)	35 years	45 of 100 (Notable)
12 April 1940	Combogolong, AU	daily rain	42.7 mm (1.7 in)	31.0 mm (1.2 in)	53 years	45 of 100 (Notable)
12 April 1940	Walgett (Euroka), AU	daily rain	47.2 mm (1.9 in)	30.2 mm (1.2 in)	53 years	45 of 100 (Notable)
12 April 1940	Stuart Town, AU	daily rain	51.3 mm (2.0 in)	44.9 mm (1.8 in)	10 years	45 of 100 (Notable)
12 April 1940	Waterville Wwtp, US	monthly rain	89.7 mm (3.5 in)	24.9 mm (1.0 in)	16 years	44 of 100 (Notable)
12 April 1940	Hargraves (Weeroona), AU	daily rain	50.0 mm (2.0 in)	45.7 mm (1.8 in)	9 years	43 of 100 (Notable)
12 April 1940	Shearleys Tank, AU	daily rain	33.0 mm (1.3 in)	29.7 mm (1.2 in)	32 years	42 of 100 (Notable)
12 April 1940	Peak Hill Post Office, AU	daily rain	38.4 mm (1.5 in)	37.1 mm (1.5 in)	45 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 1,407 records.

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

Records on 04-12 in each year
Year	Records
1793	1
1805	1
1810	1
1812	2
1817	2
1826	1
1831	1
1845	1
1850	1
1854	1
1865	2
1866	2
1868	4
1869	5
1871	1
1873	1
1874	5
1876	2
1877	1
1878	1
1879	4
1881	1
1882	1
1885	2
1889	4
1890	10
1891	3
1892	2
1893	4
1894	1
1895	1
1896	1
1897	4
1898	4
1899	5
1900	6
1901	5
1902	3
1903	10
1904	11
1905	19
1906	24
1907	5
1908	10
1909	16
1910	15
1911	26
1912	48
1913	88
1914	41
1915	125
1916	37
1917	33
1918	40
1919	39
1920	148
1921	34
1922	48
1923	134
1924	69
1925	178
1926	347
1927	179
1928	145
1929	141
1930	638
1931	267
1932	253
1933	551
1934	531
1935	171
1936	277
1937	236
1938	175
1939	1,174
1940	1,407
1941	869
1942	191
1943	614
1944	423
1945	884
1946	347
1947	733
1948	1,496
1949	358
1950	638
1951	1,102
1952	455
1953	707
1954	424
1955	611
1956	382
1957	910
1958	542
1959	513
1960	314
1961	551
1962	510
1963	518
1964	363
1965	659
1966	520
1967	682
1968	717
1969	352
1970	568
1971	587
1972	1,316
1973	903
1974	822
1975	704
1976	1,076
1977	1,069
1978	533
1979	1,096
1980	611
1981	1,068
1982	852
1983	877
1984	671
1985	734
1986	1,350
1987	606
1988	1,369
1989	1,838
1990	946
1991	1,484
1992	1,000
1993	586
1994	1,375
1995	1,173
1996	994
1997	3,094
1998	1,409
1999	873
2000	784
2001	1,369
2002	600
2003	1,079
2004	964
2005	536
2006	796
2007	1,144
2008	1,015
2009	811
2010	935
2011	1,026
2012	666
2013	1,039
2014	597
2015	504
2016	595
2017	519
2018	868
2019	685
2020	1,150
2021	710
2022	1,862
2023	1,262
2024	1,086
2025	1,281
2026	622

Download the Data

Data for records on 1940-04-12: 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	1,079
20 to 40	77
40 to 60	19
60 to 80	7
80 to 100	1
100 to 120	0
120 to 140	1