Weather Records on 15 April 1940

581 weather records were set or tied worldwide on 15 April 1940. Highest significance: Billings Wtp, US.

Key Facts for 15 April 1940

On 15 April 1940, 581 weather records were set or tied at long-record stations worldwide.
96 were record highs and 131 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 14 monthly and 567 daily.
Billings Wtp set a monthly record daily precipitation of 63.5 mm (2.5 in) on 15 April 1940.
Across 159 earlier years (1801 to 2026) the same calendar date averaged 492 records.

Record Map

581 stations

581 station records on 15 April 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 April 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Billings Wtp	United States	Record daily precipitation	63.5 mm (2.5 in)	63 of 100 (Major)
Kanas	India	Record daily precipitation	66.0 mm (2.6 in)	50 of 100 (Notable)
Korumburra	Australia	Record daily precipitation	96.5 mm (3.8 in)	48 of 100 (Notable)
Narracan East (Lynnsmere)	Australia	Record daily precipitation	71.4 mm (2.8 in)	48 of 100 (Notable)
Yannathan	Australia	Record daily precipitation	46.2 mm (1.8 in)	46 of 100 (Notable)
Warragul	Australia	Record daily precipitation	49.5 mm (1.9 in)	45 of 100 (Notable)
Flinders State School	Australia	Record daily precipitation	53.1 mm (2.1 in)	45 of 100 (Notable)
Yinnar	Australia	Record daily precipitation	65.0 mm (2.6 in)	44 of 100 (Notable)
Menangle Jmai	Australia	Record daily precipitation	57.2 mm (2.3 in)	40 of 100 (Notable)
Kiev	Ukraine	Record daily precipitation	32.9 mm (1.3 in)	40 of 100 (Notable)
Boolarra	Australia	Record daily precipitation	58.4 mm (2.3 in)	39 of 100 (Notable)
Glenthompson (Brie Brie)	Australia	Record daily precipitation	30.7 mm (1.2 in)	39 of 100 (Notable)
Birregurra (Post Office)	Australia	Record daily precipitation	26.9 mm (1.1 in)	39 of 100 (Notable)
Merino	Australia	Record daily precipitation	25.9 mm (1.0 in)	39 of 100 (Notable)
Jiggs 3 N	United States	Record daily precipitation	26.7 mm (1.1 in)	39 of 100 (Notable)
Leongatha Sth Gippsland Water	Australia	Record daily precipitation	45.7 mm (1.8 in)	36 of 100 (Notable)
Thorpdale State School	Australia	Record daily precipitation	64.8 mm (2.6 in)	35 of 100 (Notable)
Mortlake	Australia	Record daily precipitation	29.5 mm (1.2 in)	35 of 100 (Notable)
Red Lodge	United States	Record daily precipitation	42.4 mm (1.7 in)	35 of 100 (Notable)
Enngonia (Belalie)	Australia	Record daily precipitation	48.3 mm (1.9 in)	34 of 100 (Routine)
Fish Creek (Hoddle Range)	Australia	Record daily precipitation	50.5 mm (2.0 in)	34 of 100 (Routine)
Toora	Australia	Record daily precipitation	42.2 mm (1.7 in)	33 of 100 (Routine)
Leongatha (Veronica)	Australia	Record daily precipitation	41.7 mm (1.6 in)	33 of 100 (Routine)
Cowes	Australia	Record daily precipitation	55.6 mm (2.2 in)	33 of 100 (Routine)
Balook	Australia	Record daily precipitation	56.4 mm (2.2 in)	32 of 100 (Routine)
Narracan State School	Australia	Record daily precipitation	53.8 mm (2.1 in)	32 of 100 (Routine)
Hastings Post Office	Australia	Record daily precipitation	32.3 mm (1.3 in)	32 of 100 (Routine)
Springwood Bowling Club	Australia	Record daily precipitation	30.5 mm (1.2 in)	30 of 100 (Routine)
Braidwood (Wallace Street)	Australia	Record daily precipitation	47.2 mm (1.9 in)	30 of 100 (Routine)
Gormandale East	Australia	Record daily precipitation	41.1 mm (1.6 in)	30 of 100 (Routine)
Dartmoor	Australia	Record daily precipitation	29.2 mm (1.1 in)	30 of 100 (Routine)
Traralgon	Australia	Record daily precipitation	38.1 mm (1.5 in)	29 of 100 (Routine)
Macarthur (Glenhuntly)	Australia	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
Williamstown	United States	Record low minimum temperature	-8.9 C (16.0 F)	29 of 100 (Routine)
Red Lodge	United States	Record daily snowfall	38.1 cm (15.0 in)	29 of 100 (Routine)
Lardner (Brandie Braes)	Australia	Record daily precipitation	43.9 mm (1.7 in)	27 of 100 (Routine)
Mount Best (Upper Toora)	Australia	Record daily precipitation	40.6 mm (1.6 in)	27 of 100 (Routine)
American Falls 6 NE	United States	Record daily precipitation	31.2 mm (1.2 in)	27 of 100 (Routine)
Austin #2	United States	Record daily snowfall	12.7 cm (5.0 in)	27 of 100 (Routine)
Poowong (Post Office)	Australia	Record daily precipitation	48.3 mm (1.9 in)	26 of 100 (Routine)
San Remo	Australia	Record daily precipitation	34.0 mm (1.3 in)	26 of 100 (Routine)
Aibonito 1 S	Puerto Rico [United States]	Record daily precipitation	51.3 mm (2.0 in)	26 of 100 (Routine)
Springfield 1 SE	United States	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Delegate Post Office	Australia	Record daily precipitation	26.7 mm (1.1 in)	25 of 100 (Routine)
Lifjell	Norway	Record daily precipitation	25.0 mm (1.0 in)	25 of 100 (Routine)
Tarpon Spgs Sewage Plt	United States	Record low maximum temperature	18.9 C (66.0 F)	25 of 100 (Routine)
Ny City Cntrl Park	United States	Record low minimum temperature	-0.6 C (30.9 F)	25 of 100 (Routine)
Oberon (Springbank)	Australia	Record daily precipitation	35.1 mm (1.4 in)	24 of 100 (Routine)
Orange Post Office	Australia	Record daily precipitation	31.2 mm (1.2 in)	24 of 100 (Routine)
Budgeree East (Claremont)	Australia	Record daily precipitation	38.1 mm (1.5 in)	24 of 100 (Routine)
Tiffin	United States	Record daily precipitation	26.9 mm (1.1 in)	24 of 100 (Routine)
Gulargambone (Yalcogrin St)	Australia	Record daily precipitation	26.9 mm (1.1 in)	23 of 100 (Routine)
Murrurundi Post Office	Australia	Record daily precipitation	32.5 mm (1.3 in)	23 of 100 (Routine)
French Island (Tankerton)	Australia	Record daily precipitation	47.0 mm (1.9 in)	23 of 100 (Routine)
Carmel	United States	Record low minimum temperature	-7.8 C (18.0 F)	23 of 100 (Routine)
Northfield	United States	Record low minimum temperature	-10.6 C (12.9 F)	23 of 100 (Routine)
Walgett Council Depot	Australia	Record low maximum temperature	19.6 C (67.3 F)	22 of 100 (Routine)
Flemington Racecourse	Australia	Record daily precipitation	28.4 mm (1.1 in)	22 of 100 (Routine)
New Angledool Telephone Office	Australia	Record daily precipitation	30.0 mm (1.2 in)	21 of 100 (Routine)
St Marys Bowling Club	Australia	Record daily precipitation	34.8 mm (1.4 in)	21 of 100 (Routine)

Counts by Type and Timescale

581 records

Records set or tied on 15 April 1940 by type: Highest daily maximum 43, Lowest daily maximum 26, Highest daily minimum 53, Lowest daily minimum 105, Heaviest daily rainfall 348, Heaviest daily snowfall 6.

Records on 15 April 1940 by type
Record type	Records
Highest daily maximum	43
Lowest daily maximum	26
Highest daily minimum	53
Lowest daily minimum	105
Heaviest daily rainfall	348
Heaviest daily snowfall	6
Deepest snow cover	0

Records on 15 April 1940 by timescale: all-time 0, monthly 14, daily 567.

How Much Records Were Beaten By

494 broken records

Margins by which the 494 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

15 April 1940

Top 20 records on 15 April 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 April 1940	Billings Wtp, US	monthly rain	63.5 mm (2.5 in)	21.1 mm (0.8 in)	34 years	63 of 100 (Major)
15 April 1940	Kanas, IN	daily rain	66.0 mm (2.6 in)	66.0 mm (2.6 in)	39 years	50 of 100 (Notable)
15 April 1940	Korumburra, AU	daily rain	96.5 mm (3.8 in)	62.5 mm (2.5 in)	14 years	48 of 100 (Notable)
15 April 1940	Narracan East (Lynnsmere), AU	daily rain	71.4 mm (2.8 in)	47.3 mm (1.9 in)	14 years	48 of 100 (Notable)
15 April 1940	Yannathan, AU	daily rain	46.2 mm (1.8 in)	30.5 mm (1.2 in)	14 years	46 of 100 (Notable)
15 April 1940	Warragul, AU	daily rain	49.5 mm (1.9 in)	25.4 mm (1.0 in)	40 years	45 of 100 (Notable)
15 April 1940	Flinders State School, AU	daily rain	53.1 mm (2.1 in)	23.4 mm (0.9 in)	40 years	45 of 100 (Notable)
15 April 1940	Yinnar, AU	daily rain	65.0 mm (2.6 in)	43.4 mm (1.7 in)	5 years	44 of 100 (Notable)
15 April 1940	Menangle Jmai, AU	daily rain	57.2 mm (2.3 in)	34.8 mm (1.4 in)	22 years	40 of 100 (Notable)
15 April 1940	Kiev, UA	daily rain	32.9 mm (1.3 in)	13.8 mm (0.5 in)	24 years	40 of 100 (Notable)
15 April 1940	Boolarra, AU	monthly rain	58.4 mm (2.3 in)	13.9 mm (0.5 in)	23 years	39 of 100 (Notable)
15 April 1940	Glenthompson (Brie Brie), AU	daily rain	30.7 mm (1.2 in)	9.9 mm (0.39 in)	59 years	39 of 100 (Notable)
15 April 1940	Birregurra (Post Office), AU	daily rain	26.9 mm (1.1 in)	15.5 mm (0.6 in)	34 years	39 of 100 (Notable)
15 April 1940	Merino, AU	daily rain	25.9 mm (1.0 in)	14.0 mm (0.6 in)	47 years	39 of 100 (Notable)
15 April 1940	Jiggs 3 N, US	daily rain	26.7 mm (1.1 in)	17.0 mm (0.7 in)	20 years	39 of 100 (Notable)
15 April 1940	Leongatha Sth Gippsland Water, AU	daily rain	45.7 mm (1.8 in)	22.3 mm (0.9 in)	14 years	36 of 100 (Notable)
15 April 1940	Thorpdale State School, AU	monthly rain	64.8 mm (2.6 in)	4.6 mm (0.18 in)	51 years	35 of 100 (Notable)
15 April 1940	Mortlake, AU	daily rain	29.5 mm (1.2 in)	9.9 mm (0.39 in)	40 years	35 of 100 (Notable)
15 April 1940	Red Lodge, US	daily rain	42.4 mm (1.7 in)	25.9 mm (1.0 in)	13 years	35 of 100 (Notable)
15 April 1940	Enngonia (Belalie), AU	daily rain	48.3 mm (1.9 in)	38.1 mm (1.5 in)	1 year	34 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

1801 to 1940

Records set or tied on this calendar date in each year from 1801 to 1940. 1940 had 581 records.

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

Records on 04-15 in each year
Year	Records
1801	1
1817	1
1820	1
1844	1
1845	1
1847	1
1849	1
1853	2
1855	2
1858	1
1862	3
1865	3
1866	1
1868	1
1869	2
1873	1
1874	1
1876	1
1880	1
1882	1
1885	3
1886	1
1887	3
1889	2
1890	3
1891	2
1892	8
1893	2
1894	1
1896	2
1897	1
1898	2
1899	4
1900	9
1901	2
1902	4
1903	8
1904	39
1905	11
1906	20
1907	18
1908	15
1909	18
1910	16
1911	20
1912	24
1913	39
1914	17
1915	13
1916	15
1917	35
1918	40
1919	22
1920	50
1921	59
1922	94
1923	178
1924	172
1925	168
1926	453
1927	321
1928	631
1929	91
1930	289
1931	388
1932	150
1933	300
1934	339
1935	515
1936	439
1937	277
1938	596
1939	789
1940	581
1941	628
1942	525
1943	1,037
1944	313
1945	783
1946	245
1947	532
1948	306
1949	419
1950	568
1951	504
1952	357
1953	475
1954	896
1955	484
1956	750
1957	378
1958	458
1959	314
1960	319
1961	877
1962	733
1963	714
1964	382
1965	504
1966	464
1967	599
1968	476
1969	555
1970	841
1971	640
1972	896
1973	667
1974	385
1975	780
1976	1,566
1977	649
1978	426
1979	370
1980	1,066
1981	724
1982	955
1983	1,343
1984	612
1985	788
1986	1,140
1987	579
1988	839
1989	836
1990	837
1991	769
1992	783
1993	1,156
1994	835
1995	805
1996	1,173
1997	1,031
1998	1,752
1999	1,249
2000	1,163
2001	1,043
2002	1,866
2003	1,760
2004	761
2005	583
2006	1,637
2007	1,776
2008	1,157
2009	853
2010	804
2011	1,162
2012	1,007
2013	1,146
2014	1,721
2015	739
2016	602
2017	474
2018	1,913
2019	610
2020	1,068
2021	494
2022	1,145
2023	912
2024	1,096
2025	860
2026	1,118

Download the Data

Data for records on 1940-04-15: 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 25	475
25 to 50	15
50 to 75	2
75 to 100	0
100 to 125	1
125 to 150	0
150 to 175	0
175 to 200	1