Weather Records on 10 April 1940

252 weather records were set or tied worldwide on 10 April 1940. Highest significance: Simcoe, CA.

Key Facts for 10 April 1940

On 10 April 1940, 252 weather records were set or tied at long-record stations worldwide.
38 were record highs and 112 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 250 daily.
Simcoe set a daily record snowfall of 10.2 cm (4.0 in) on 10 April 1940.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 468 records.

Record Map

252 stations

252 station records on 10 April 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 10 April 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Simcoe	Canada	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Edmonton	Canada	Record low minimum temperature	-20.6 C (-5.1 F)	37 of 100 (Notable)
Havre Wb City	United States	Record low minimum temperature	-18.3 C (-0.9 F)	34 of 100 (Routine)
Croydon Township	Australia	Record daily precipitation	45.0 mm (1.8 in)	32 of 100 (Routine)
Edmonton	Canada	Record low maximum temperature	-7.8 C (18.0 F)	31 of 100 (Routine)
Farmland 5 NNW	United States	Record daily snowfall	14.5 cm (5.7 in)	29 of 100 (Routine)
Calgary Int'l A	Canada	Record low maximum temperature	-7.2 C (19.0 F)	28 of 100 (Routine)
Las Animas	United States	Record daily snowfall	5.6 cm (2.2 in)	28 of 100 (Routine)
Iffley Station	Australia	Record daily precipitation	26.4 mm (1.0 in)	25 of 100 (Routine)
Millungera Station	Australia	Record daily precipitation	43.2 mm (1.7 in)	25 of 100 (Routine)
Pekisko	Canada	Record daily snowfall	8.9 cm (3.5 in)	25 of 100 (Routine)
Battleford	Canada	Record low maximum temperature	-9.4 C (15.1 F)	25 of 100 (Routine)
Big Timber	United States	Record daily precipitation	33.0 mm (1.3 in)	25 of 100 (Routine)
Glendive	United States	Record low minimum temperature	-11.7 C (10.9 F)	25 of 100 (Routine)
Leipzig-Holzhausen	Germany	Record low minimum temperature	-2.1 C (28.2 F)	24 of 100 (Routine)
Rapelje	United States	Record daily snowfall	5.1 cm (2.0 in)	24 of 100 (Routine)
Gleichen	Canada	Record low minimum temperature	-23.3 C (-9.9 F)	23 of 100 (Routine)
Chaplin	Canada	Record low minimum temperature	-22.2 C (-8.0 F)	23 of 100 (Routine)
Uralsk	Kazakhstan	Record high minimum temperature	8.1 C (46.6 F)	23 of 100 (Routine)
Astrakan	Russia	Record high minimum temperature	10.8 C (51.4 F)	23 of 100 (Routine)
Babb 6 NE	United States	Record daily snowfall	15.7 cm (6.2 in)	23 of 100 (Routine)
Goldbutte 7 N	United States	Record daily snowfall	8.1 cm (3.2 in)	23 of 100 (Routine)
Prince Rupert	Canada	Record daily precipitation	38.9 mm (1.5 in)	22 of 100 (Routine)
Pincher Creek Town	Canada	Record low maximum temperature	-5.0 C (23.0 F)	22 of 100 (Routine)
Sitka Magnetic Obsy	United States	Record high minimum temperature	6.7 C (44.1 F)	22 of 100 (Routine)
Orenburg	Russia	Record high minimum temperature	9.2 C (48.6 F)	21 of 100 (Routine)
Ft Robinson	United States	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Nome AP	United States	Record high maximum temperature	10.0 C (50.0 F)	21 of 100 (Routine)
Golden A	Canada	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Livingston	United States	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Bozeman Montana State UNIV	United States	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Cambridge Downs Station	Australia	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Olekminsk	Russia	Record daily precipitation	5.0 mm (0.20 in)	20 of 100 (Routine)
Canon City	United States	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Granada Station	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Stanley Wwtp	United States	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Havre Wb City	United States	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Yarrie	Australia	Record daily precipitation	5.1 mm (0.20 in)	20 of 100 (Routine)
Woodhouse	Australia	Record daily precipitation	6.1 mm (0.24 in)	20 of 100 (Routine)
Panchgani	India	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Biser	Russia	Record daily precipitation	10.5 mm (0.4 in)	20 of 100 (Routine)
Red Lodge	United States	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Clarke River Telecom	Australia	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Barguzin	Russia	Record daily precipitation	2.7 mm (0.11 in)	20 of 100 (Routine)
Las Animas	United States	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Lusk 2 SW	United States	Record daily snowfall	17.8 cm (7.0 in)	20 of 100 (Routine)
Holy Cross	United States	Record high maximum temperature	10.0 C (50.0 F)	20 of 100 (Routine)
Bellingen Post Office	Australia	Record daily precipitation	107.2 mm (4.2 in)	19 of 100 (Routine)
Merriwa (Terragong)	Australia	Record daily precipitation	17.3 mm (0.7 in)	19 of 100 (Routine)
Golden A	Canada	Record daily snowfall	2.5 cm (1.0 in)	19 of 100 (Routine)
Medicine Hat A	Canada	Record low maximum temperature	-6.7 C (19.9 F)	19 of 100 (Routine)
Saskatoon Diefenbaker Int'l A	Canada	Record low minimum temperature	-15.0 C (5.0 F)	19 of 100 (Routine)
Emsdale	Canada	Record daily snowfall	0.8 cm (0.3 in)	19 of 100 (Routine)
Honomanu 450	United States	Record high maximum temperature	28.9 C (84.0 F)	19 of 100 (Routine)
McAlester Rgnl AP	United States	Record daily precipitation	36.8 mm (1.4 in)	19 of 100 (Routine)
Bridgetown Comparison	Australia	Record low maximum temperature	13.9 C (57.0 F)	18 of 100 (Routine)
Bellbrook (East Street)	Australia	Record daily precipitation	24.9 mm (1.0 in)	18 of 100 (Routine)
Hillsdown	Canada	Record low maximum temperature	-6.7 C (19.9 F)	18 of 100 (Routine)
High River	Canada	Record low maximum temperature	-7.2 C (19.0 F)	18 of 100 (Routine)
Medicine Hat A	Canada	Record low minimum temperature	-12.2 C (10.0 F)	18 of 100 (Routine)

Counts by Type and Timescale

252 records

Records set or tied on 10 April 1940 by type: Highest daily maximum 10, Lowest daily maximum 64, Highest daily minimum 28, Lowest daily minimum 48, Heaviest daily rainfall 80, Heaviest daily snowfall 22.

Records on 10 April 1940 by type
Record type	Records
Highest daily maximum	10
Lowest daily maximum	64
Highest daily minimum	28
Lowest daily minimum	48
Heaviest daily rainfall	80
Heaviest daily snowfall	22
Deepest snow cover	0

Records on 10 April 1940 by timescale: all-time 0, monthly 2, daily 250.

How Much Records Were Beaten By

212 broken records

Margins by which the 212 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

10 April 1940

Top 20 records on 10 April 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 April 1940	Simcoe, CA	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	73 years	42 of 100 (Notable)
10 April 1940	Edmonton, CA	daily low min	-20.6 C (-5.1 F)	8.4 C (15.1 F)	52 years	37 of 100 (Notable)
10 April 1940	Havre Wb City, US	daily low min	-18.3 C (-0.9 F)	8.9 C (16.0 F)	35 years	34 of 100 (Routine)
10 April 1940	Croydon Township, AU	daily rain	45.0 mm (1.8 in)	31.0 mm (1.2 in)	33 years	32 of 100 (Routine)
10 April 1940	Edmonton, CA	daily low max	-7.8 C (18.0 F)	5.6 C (10.1 F)	58 years	31 of 100 (Routine)
10 April 1940	Farmland 5 NNW, US	monthly snowfall	14.5 cm (5.7 in)	1.8 cm (0.7 in)	43 years	29 of 100 (Routine)
10 April 1940	Calgary Int'l A, CA	daily low max	-7.2 C (19.0 F)	6.6 C (11.9 F)	43 years	28 of 100 (Routine)
10 April 1940	Las Animas, US	daily snowfall	5.6 cm (2.2 in)	5.6 cm (2.2 in)	44 years	28 of 100 (Routine)
10 April 1940	Iffley Station, AU	daily rain	26.4 mm (1.0 in)	13.7 mm (0.5 in)	29 years	25 of 100 (Routine)
10 April 1940	Millungera Station, AU	daily rain	43.2 mm (1.7 in)	23.4 mm (0.9 in)	35 years	25 of 100 (Routine)
10 April 1940	Pekisko, CA	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	34 years	25 of 100 (Routine)
10 April 1940	Battleford, CA	daily low max	-9.4 C (15.1 F)	5.0 C (9.0 F)	43 years	25 of 100 (Routine)
10 April 1940	Big Timber, US	daily rain	33.0 mm (1.3 in)	9.1 mm (0.36 in)	43 years	25 of 100 (Routine)
10 April 1940	Glendive, US	daily low min	-11.7 C (10.9 F)	5.0 C (9.0 F)	38 years	25 of 100 (Routine)
10 April 1940	Leipzig-Holzhausen, DE	daily low min	-2.1 C (28.2 F)	0.1 C (0.2 F)	57 years	24 of 100 (Routine)
10 April 1940	Rapelje, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	32 years	24 of 100 (Routine)
10 April 1940	Gleichen, CA	monthly low min	-23.3 C (-9.9 F)	0.5 C (0.9 F)	32 years	23 of 100 (Routine)
10 April 1940	Chaplin, CA	daily low min	-22.2 C (-8.0 F)	10.5 C (18.9 F)	1 year	23 of 100 (Routine)
10 April 1940	Uralsk, KZ	daily high min	8.1 C (46.6 F)	4.8 C (8.6 F)	39 years	23 of 100 (Routine)
10 April 1940	Astrakan, RU	daily high min	10.8 C (51.4 F)	1.3 C (2.3 F)	49 years	23 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

1793 to 1940

Records set or tied on this calendar date in each year from 1793 to 1940. 1940 had 252 records.

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

Records on 04-10 in each year
Year	Records
1793	1
1798	1
1805	1
1809	2
1812	3
1842	2
1844	1
1846	1
1847	1
1854	1
1863	2
1864	2
1865	2
1869	1
1872	1
1873	2
1875	2
1876	3
1877	2
1878	2
1879	1
1880	2
1882	1
1885	1
1886	1
1887	6
1888	1
1889	1
1890	4
1891	1
1892	4
1893	3
1894	5
1895	5
1896	4
1897	3
1898	6
1899	4
1900	8
1901	4
1902	4
1903	10
1904	12
1905	21
1906	24
1907	13
1908	8
1909	37
1910	15
1911	17
1912	55
1913	27
1914	25
1915	61
1916	94
1917	64
1918	43
1919	39
1920	66
1921	44
1922	178
1923	71
1924	119
1925	143
1926	86
1927	205
1928	245
1929	290
1930	646
1931	107
1932	290
1933	392
1934	237
1935	253
1936	186
1937	254
1938	401
1939	363
1940	252
1941	402
1942	548
1943	577
1944	718
1945	1,031
1946	287
1947	355
1948	335
1949	294
1950	599
1951	394
1952	793
1953	601
1954	243
1955	650
1956	377
1957	411
1958	326
1959	527
1960	683
1961	734
1962	258
1963	446
1964	239
1965	770
1966	537
1967	549
1968	498
1969	545
1970	521
1971	569
1972	639
1973	2,070
1974	935
1975	850
1976	431
1977	1,430
1978	1,233
1979	875
1980	654
1981	701
1982	1,138
1983	1,170
1984	548
1985	1,391
1986	562
1987	403
1988	764
1989	1,835
1990	1,135
1991	1,101
1992	929
1993	583
1994	844
1995	1,811
1996	1,475
1997	2,935
1998	899
1999	1,738
2000	651
2001	1,792
2002	589
2003	1,431
2004	548
2005	886
2006	650
2007	848
2008	1,141
2009	1,031
2010	574
2011	1,880
2012	846
2013	1,703
2014	615
2015	667
2016	921
2017	846
2018	861
2019	636
2020	712
2021	749
2022	783
2023	835
2024	713
2025	796
2026	840

Download the Data

Data for records on 1940-04-10: 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	197
20 to 40	7
40 to 60	3
60 to 80	0
80 to 100	3
100 to 120	1
120 to 140	1