Weather Records on 20 April 1951

690 weather records were set or tied worldwide on 20 April 1951. Highest significance: Ruby Plains, AU.

Key Facts for 20 April 1951

On 20 April 1951, 690 weather records were set or tied at long-record stations worldwide.
57 were record highs and 288 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 14 monthly and 676 daily.
Ruby Plains set a daily record precipitation of 45.2 mm (1.8 in) on 20 April 1951.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 461 records.

Record Map

690 stations

690 station records on 20 April 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ruby Plains	Australia	Record daily precipitation	45.2 mm (1.8 in)	56 of 100 (Notable)
Mtn Park	United States	Record daily precipitation	31.5 mm (1.2 in)	56 of 100 (Notable)
Arni	India	Record daily precipitation	52.8 mm (2.1 in)	53 of 100 (Notable)
Miller	United States	Record daily snowfall	25.4 cm (10.0 in)	52 of 100 (Notable)
Amarpara	India	Record daily precipitation	76.2 mm (3.0 in)	48 of 100 (Notable)
Arkonam	India	Record daily precipitation	36.8 mm (1.4 in)	47 of 100 (Notable)
Gann Valley 4NW	United States	Record daily precipitation	40.6 mm (1.6 in)	47 of 100 (Notable)
Flora Valley Old	Australia	Record daily precipitation	55.6 mm (2.2 in)	45 of 100 (Notable)
Moola Bulla	Australia	Record daily precipitation	44.2 mm (1.7 in)	43 of 100 (Notable)
Muenster	Canada	Record daily snowfall	17.8 cm (7.0 in)	43 of 100 (Notable)
Academy 2NE	United States	Record daily precipitation	38.1 mm (1.5 in)	41 of 100 (Notable)
Mazbat(Majbat)	India	Record daily precipitation	74.9 mm (2.9 in)	40 of 100 (Notable)
Pasan	India	Record daily precipitation	33.0 mm (1.3 in)	39 of 100 (Notable)
Jashpurnagar	India	Record daily precipitation	33.0 mm (1.3 in)	39 of 100 (Notable)
Risnes I Fjotland	Norway	Record snow depth	112.0 cm (44.1 in)	39 of 100 (Notable)
Lakeside	United States	Record low minimum temperature	-3.9 C (25.0 F)	39 of 100 (Notable)
Puttur	India	Record daily precipitation	43.7 mm (1.7 in)	37 of 100 (Notable)
Mykland	Norway	Record snow depth	146.0 cm (57.5 in)	37 of 100 (Notable)
Gann Valley 4NW	United States	Record daily snowfall	20.3 cm (8.0 in)	37 of 100 (Notable)
Philadelphia Polisie	South Africa	Record daily precipitation	29.2 mm (1.1 in)	36 of 100 (Notable)
Uttiramerur	India	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Cloudcroft	United States	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Steveston	Canada	Record low minimum temperature	-4.4 C (24.1 F)	34 of 100 (Routine)
Cuddapah	India	Record daily precipitation	39.4 mm (1.6 in)	34 of 100 (Routine)
Deer Lodge	United States	Record low maximum temperature	-2.8 C (27.0 F)	34 of 100 (Routine)
Minot Exp STN	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Fairfax	United States	Record daily snowfall	17.3 cm (6.8 in)	34 of 100 (Routine)
Yellow Grass	Canada	Record daily snowfall	10.2 cm (4.0 in)	33 of 100 (Routine)
Conway	United States	Record daily precipitation	57.7 mm (2.3 in)	33 of 100 (Routine)
Venkatagirikota	India	Record daily precipitation	40.6 mm (1.6 in)	32 of 100 (Routine)
Gurjala(Gurujala)	India	Record daily precipitation	33.3 mm (1.3 in)	32 of 100 (Routine)
Wallajah	India	Record daily precipitation	43.4 mm (1.7 in)	32 of 100 (Routine)
Nelson	United States	Record daily precipitation	36.1 mm (1.4 in)	32 of 100 (Routine)
St John's	Canada	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Tuddal	Norway	Record snow depth	130.0 cm (51.2 in)	31 of 100 (Routine)
Fellsmere 7 SSW	United States	Record daily precipitation	44.5 mm (1.8 in)	31 of 100 (Routine)
Greensburg	United States	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Choteau	United States	Record low maximum temperature	-4.4 C (24.1 F)	31 of 100 (Routine)
Podili(Podile)	India	Record daily precipitation	28.7 mm (1.1 in)	30 of 100 (Routine)
Gingee	India	Record daily precipitation	59.7 mm (2.4 in)	30 of 100 (Routine)
Fairfax	United States	Record daily precipitation	36.6 mm (1.4 in)	30 of 100 (Routine)
Miller	United States	Record daily precipitation	27.4 mm (1.1 in)	30 of 100 (Routine)
Mulbagal	India	Record daily precipitation	62.5 mm (2.5 in)	29 of 100 (Routine)
Gann Valley 4NW	United States	Record snow depth	15.2 cm (6.0 in)	29 of 100 (Routine)
Paripiranga	Brazil	Record daily precipitation	53.3 mm (2.1 in)	28 of 100 (Routine)
Sriperumbudur	India	Record daily precipitation	35.8 mm (1.4 in)	28 of 100 (Routine)
Chingleput	India	Record daily precipitation	40.9 mm (1.6 in)	28 of 100 (Routine)
Hiasen I Sigdal	Norway	Record snow depth	129.0 cm (50.8 in)	28 of 100 (Routine)
Crow Agency	United States	Record daily snowfall	5.1 cm (2.0 in)	28 of 100 (Routine)
Mc Cook	United States	Record daily precipitation	43.9 mm (1.7 in)	28 of 100 (Routine)
Casper 2 E	United States	Record low maximum temperature	-2.8 C (27.0 F)	28 of 100 (Routine)
Old Halls Creek	Australia	Record daily precipitation	27.2 mm (1.1 in)	27 of 100 (Routine)
Gleichen	Canada	Record low minimum temperature	-12.8 C (9.0 F)	27 of 100 (Routine)
Nes Pa Hedmark	Norway	Record snow depth	42.0 cm (16.5 in)	27 of 100 (Routine)
Aseral	Norway	Record snow depth	130.0 cm (51.2 in)	27 of 100 (Routine)
Lincoln Agronomy Farm	United States	Record daily precipitation	27.9 mm (1.1 in)	27 of 100 (Routine)
Southport 5 N	United States	Record daily precipitation	36.8 mm (1.4 in)	27 of 100 (Routine)
Calgary Int'l A	Canada	Record low maximum temperature	-4.4 C (24.1 F)	26 of 100 (Routine)
Tezpur	India	Record daily precipitation	41.1 mm (1.6 in)	26 of 100 (Routine)
Tiruppattur	India	Record daily precipitation	32.0 mm (1.3 in)	26 of 100 (Routine)

Counts by Type and Timescale

690 records

Records set or tied on 20 April 1951 by type: Highest daily maximum 33, Lowest daily maximum 177, Highest daily minimum 24, Lowest daily minimum 111, Heaviest daily rainfall 270, Heaviest daily snowfall 43, Deepest snow cover 32.

Records on 20 April 1951 by type
Record type	Records
Highest daily maximum	33
Lowest daily maximum	177
Highest daily minimum	24
Lowest daily minimum	111
Heaviest daily rainfall	270
Heaviest daily snowfall	43
Deepest snow cover	32

Records on 20 April 1951 by timescale: all-time 0, monthly 14, daily 676.

How Much Records Were Beaten By

597 broken records

Margins by which the 597 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 690.0. Ties are not counted.

Top 20 by Significance

20 April 1951

Top 20 records on 20 April 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 1951	Ruby Plains, AU	daily rain	45.2 mm (1.8 in)	45.2 mm (1.8 in)	49 years	56 of 100 (Notable)
20 April 1951	Mtn Park, US	daily rain	31.5 mm (1.2 in)	31.5 mm (1.2 in)	38 years	56 of 100 (Notable)
20 April 1951	Arni, IN	daily rain	52.8 mm (2.1 in)	52.8 mm (2.1 in)	49 years	53 of 100 (Notable)
20 April 1951	Miller, US	daily snowfall	25.4 cm (10.0 in)	24.4 cm (9.6 in)	24 years	52 of 100 (Notable)
20 April 1951	Amarpara, IN	monthly rain	76.2 mm (3.0 in)	23.1 mm (0.9 in)	37 years	48 of 100 (Notable)
20 April 1951	Arkonam, IN	daily rain	36.8 mm (1.4 in)	36.8 mm (1.4 in)	49 years	47 of 100 (Notable)
20 April 1951	Gann Valley 4NW, US	daily rain	40.6 mm (1.6 in)	27.9 mm (1.1 in)	41 years	47 of 100 (Notable)
20 April 1951	Flora Valley Old, AU	daily rain	55.6 mm (2.2 in)	53.6 mm (2.1 in)	2 years	45 of 100 (Notable)
20 April 1951	Moola Bulla, AU	monthly rain	44.2 mm (1.7 in)	14.7 mm (0.6 in)	28 years	43 of 100 (Notable)
20 April 1951	Muenster, CA	daily snowfall	17.8 cm (7.0 in)	14.5 cm (5.7 in)	36 years	43 of 100 (Notable)
20 April 1951	Academy 2NE, US	daily rain	38.1 mm (1.5 in)	25.1 mm (1.0 in)	37 years	41 of 100 (Notable)
20 April 1951	Mazbat(Majbat), IN	daily rain	74.9 mm (2.9 in)	33.5 mm (1.3 in)	37 years	40 of 100 (Notable)
20 April 1951	Pasan, IN	daily rain	33.0 mm (1.3 in)	25.1 mm (1.0 in)	13 years	39 of 100 (Notable)
20 April 1951	Jashpurnagar, IN	daily rain	33.0 mm (1.3 in)	18.8 mm (0.7 in)	38 years	39 of 100 (Notable)
20 April 1951	Risnes I Fjotland, NO	daily snow depth	112.0 cm (44.1 in)	47.0 cm (18.5 in)	33 years	39 of 100 (Notable)
20 April 1951	Lakeside, US	daily low min	-3.9 C (25.0 F)	5.0 C (9.0 F)	57 years	39 of 100 (Notable)
20 April 1951	Puttur, IN	daily rain	43.7 mm (1.7 in)	26.4 mm (1.0 in)	44 years	37 of 100 (Notable)
20 April 1951	Mykland, NO	daily snow depth	146.0 cm (57.5 in)	69.0 cm (27.2 in)	33 years	37 of 100 (Notable)
20 April 1951	Gann Valley 4NW, US	daily snowfall	20.3 cm (8.0 in)	15.2 cm (6.0 in)	24 years	37 of 100 (Notable)
20 April 1951	Philadelphia Polisie, ZA	daily rain	29.2 mm (1.1 in)	17.8 mm (0.7 in)	28 years	36 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

1807 to 1951

Records set or tied on this calendar date in each year from 1807 to 1951. 1951 had 690 records.

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

Records on 04-20 in each year
Year	Records
1807	3
1817	1
1838	1
1849	2
1851	1
1852	4
1854	1
1858	1
1860	1
1864	1
1865	3
1868	1
1869	1
1870	1
1872	1
1874	3
1875	4
1876	1
1878	2
1880	2
1881	2
1884	1
1885	1
1886	2
1889	1
1891	2
1892	1
1893	6
1894	8
1895	7
1896	3
1897	6
1898	1
1899	1
1901	8
1902	3
1903	14
1904	31
1905	9
1906	12
1907	18
1908	14
1909	22
1910	25
1911	18
1912	12
1913	19
1914	46
1915	45
1916	19
1917	33
1918	42
1919	17
1920	49
1921	27
1922	40
1923	157
1924	113
1925	169
1926	310
1927	442
1928	212
1929	182
1930	87
1931	255
1932	166
1933	279
1934	384
1935	384
1936	311
1937	427
1938	339
1939	158
1940	519
1941	558
1942	223
1943	670
1944	304
1945	391
1946	395
1947	308
1948	493
1949	477
1950	329
1951	690
1952	552
1953	1,071
1954	377
1955	623
1956	384
1957	730
1958	327
1959	563
1960	472
1961	1,078
1962	487
1963	595
1964	749
1965	724
1966	1,174
1967	864
1968	975
1969	382
1970	948
1971	765
1972	531
1973	982
1974	673
1975	344
1976	661
1977	693
1978	800
1979	495
1980	1,539
1981	706
1982	906
1983	1,844
1984	922
1985	1,140
1986	770
1987	1,447
1988	1,144
1989	1,187
1990	1,495
1991	1,075
1992	1,009
1993	772
1994	756
1995	1,351
1996	970
1997	833
1998	1,490
1999	674
2000	931
2001	752
2002	1,081
2003	758
2004	567
2005	707
2006	859
2007	582
2008	1,110
2009	845
2010	693
2011	1,477
2012	726
2013	1,520
2014	384
2015	702
2016	650
2017	734
2018	1,309
2019	1,019
2020	449
2021	1,215
2022	596
2023	828
2024	673
2025	836
2026	533

Download the Data

Data for records on 1951-04-20: 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 100	578
100 to 200	7
200 to 300	4
300 to 400	4
400 to 500	2
500 to 600	1
600 to 700	1