Weather Records on 20 April 1938

339 weather records were set or tied worldwide on 20 April 1938. Highest significance: Moora, AU.

Key Facts for 20 April 1938

On 20 April 1938, 339 weather records were set or tied at long-record stations worldwide.
142 were record highs and 58 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 323 daily.
Moora set a monthly record daily precipitation of 42.9 mm (1.7 in) on 20 April 1938.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 463 records.

Record Map

339 stations

339 station records on 20 April 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Moora	Australia	Record daily precipitation	42.9 mm (1.7 in)	44 of 100 (Notable)
Three Springs	Australia	Record daily precipitation	41.1 mm (1.6 in)	43 of 100 (Notable)
Greenough	Australia	Record daily precipitation	40.1 mm (1.6 in)	41 of 100 (Notable)
Gingin	Australia	Record daily precipitation	37.1 mm (1.5 in)	41 of 100 (Notable)
Yathroo	Australia	Record daily precipitation	47.8 mm (1.9 in)	39 of 100 (Notable)
Dandaragan	Australia	Record daily precipitation	54.9 mm (2.2 in)	39 of 100 (Notable)
Benson	United States	Record high minimum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Learmonth	Australia	Record daily precipitation	52.1 mm (2.1 in)	38 of 100 (Notable)
Dongara	Australia	Record daily precipitation	33.8 mm (1.3 in)	35 of 100 (Notable)
Perth Regional Office	Australia	Record daily precipitation	33.3 mm (1.3 in)	35 of 100 (Notable)
Praha-Klementinum	Czech Republic	Record low minimum temperature	-2.5 C (27.5 F)	35 of 100 (Notable)
Wongan Hills	Australia	Record daily precipitation	33.8 mm (1.3 in)	34 of 100 (Routine)
Wien	Austria	Record low minimum temperature	-1.0 C (30.2 F)	34 of 100 (Routine)
Mingenew	Australia	Record daily precipitation	27.7 mm (1.1 in)	33 of 100 (Routine)
Subiaco	Australia	Record daily precipitation	31.8 mm (1.3 in)	33 of 100 (Routine)
Schreiber	Canada	Record daily snowfall	7.6 cm (3.0 in)	33 of 100 (Routine)
Nungarin	Australia	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Mumby	Australia	Record daily precipitation	38.1 mm (1.5 in)	30 of 100 (Routine)
Uppsala_Aut	Sweden	Record low minimum temperature	-6.9 C (19.6 F)	30 of 100 (Routine)
Berkshire Valley	Australia	Record daily precipitation	41.1 mm (1.6 in)	29 of 100 (Routine)
Strawberry North	Australia	Record daily precipitation	30.5 mm (1.2 in)	29 of 100 (Routine)
Pointe Au Pere	Canada	Record high maximum temperature	18.3 C (64.9 F)	29 of 100 (Routine)
Hamburg Fuhlsbuettel	Germany	Record low minimum temperature	-4.5 C (23.9 F)	29 of 100 (Routine)
Winnipeg St Johns Coll	Canada	Record daily snowfall	11.7 cm (4.6 in)	28 of 100 (Routine)
Kristianstad	Sweden	Record low minimum temperature	-4.0 C (24.8 F)	28 of 100 (Routine)
Chemnitz	Germany	Record low minimum temperature	-3.2 C (26.2 F)	27 of 100 (Routine)
Bajramaly	Turkmenistan	Record high minimum temperature	18.9 C (66.0 F)	27 of 100 (Routine)
Williams	United States	Record high minimum temperature	12.2 C (54.0 F)	27 of 100 (Routine)
Brantford	Canada	Record high minimum temperature	10.6 C (51.1 F)	26 of 100 (Routine)
Bathurst	Canada	Record high maximum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Gorlitz	Germany	Record low minimum temperature	-3.6 C (25.5 F)	25 of 100 (Routine)
Sfax El-Maou	Tunisia	Record low maximum temperature	14.0 C (57.2 F)	25 of 100 (Routine)
St Georges	Canada	Record high maximum temperature	17.8 C (64.0 F)	24 of 100 (Routine)
Magdeburg	Germany	Record low minimum temperature	-2.0 C (28.4 F)	24 of 100 (Routine)
Karlshamn	Sweden	Record low minimum temperature	-3.0 C (26.6 F)	24 of 100 (Routine)
Wannamal	Australia	Record daily precipitation	38.4 mm (1.5 in)	23 of 100 (Routine)
Boyanup	Australia	Record daily precipitation	28.7 mm (1.1 in)	23 of 100 (Routine)
Kremsmuenster	Austria	Record low minimum temperature	-3.4 C (25.9 F)	23 of 100 (Routine)
Sydney	Canada	Record high minimum temperature	3.9 C (39.0 F)	23 of 100 (Routine)
Guntersville	United States	Record daily precipitation	40.6 mm (1.6 in)	23 of 100 (Routine)
Geraldton Town	Australia	Record daily precipitation	32.3 mm (1.3 in)	22 of 100 (Routine)
Bumberry	Australia	Record daily precipitation	32.3 mm (1.3 in)	22 of 100 (Routine)
St John's	Canada	Record high minimum temperature	6.1 C (43.0 F)	22 of 100 (Routine)
Trenton 2	United States	Record high maximum temperature	30.0 C (86.0 F)	22 of 100 (Routine)
Luna Rs	United States	Record high minimum temperature	6.7 C (44.1 F)	22 of 100 (Routine)
Guildford Post Office	Australia	Record daily precipitation	25.7 mm (1.0 in)	21 of 100 (Routine)
Bathurst	Canada	Record high minimum temperature	3.3 C (37.9 F)	21 of 100 (Routine)
Nuwara Eliya	Sri Lanka	Record low maximum temperature	19.6 C (67.3 F)	21 of 100 (Routine)
Indio Fire STN	United States	Record high minimum temperature	22.8 C (73.0 F)	21 of 100 (Routine)
Paso Robles	United States	Record high minimum temperature	11.1 C (52.0 F)	21 of 100 (Routine)
Salida	United States	Record high minimum temperature	6.1 C (43.0 F)	21 of 100 (Routine)
Chama	United States	Record high maximum temperature	23.9 C (75.0 F)	21 of 100 (Routine)
Lewisburg 3 N	United States	Record high minimum temperature	17.8 C (64.0 F)	21 of 100 (Routine)
Bergplaats	South Africa	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Mangowine	Australia	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Berry Brow	Australia	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Yanrey	Australia	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Mount Magnet	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Toodyay	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Yalgoo	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)

Counts by Type and Timescale

339 records

Records set or tied on 20 April 1938 by type: Highest daily maximum 39, Lowest daily maximum 18, Highest daily minimum 103, Lowest daily minimum 40, Heaviest daily rainfall 132, Heaviest daily snowfall 7.

Records on 20 April 1938 by type
Record type	Records
Highest daily maximum	39
Lowest daily maximum	18
Highest daily minimum	103
Lowest daily minimum	40
Heaviest daily rainfall	132
Heaviest daily snowfall	7
Deepest snow cover	0

Records on 20 April 1938 by timescale: all-time 0, monthly 16, daily 323.

How Much Records Were Beaten By

279 broken records

Margins by which the 279 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.

Top 20 by Significance

20 April 1938

Top 20 records on 20 April 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 1938	Moora, AU	monthly rain	42.9 mm (1.7 in)	13.9 mm (0.5 in)	15 years	44 of 100 (Notable)
20 April 1938	Three Springs, AU	daily rain	41.1 mm (1.6 in)	30.4 mm (1.2 in)	15 years	43 of 100 (Notable)
20 April 1938	Greenough, AU	daily rain	40.1 mm (1.6 in)	29.2 mm (1.1 in)	1 year	41 of 100 (Notable)
20 April 1938	Gingin, AU	daily rain	37.1 mm (1.5 in)	20.8 mm (0.8 in)	12 years	41 of 100 (Notable)
20 April 1938	Yathroo, AU	daily rain	47.8 mm (1.9 in)	32.3 mm (1.3 in)	9 years	39 of 100 (Notable)
20 April 1938	Dandaragan, AU	monthly rain	54.9 mm (2.2 in)	14.8 mm (0.6 in)	15 years	39 of 100 (Notable)
20 April 1938	Benson, US	daily high min	20.6 C (69.1 F)	10.6 C (19.1 F)	29 years	39 of 100 (Notable)
20 April 1938	Learmonth, AU	monthly rain	52.1 mm (2.1 in)	7.9 mm (0.31 in)	36 years	38 of 100 (Notable)
20 April 1938	Dongara, AU	daily rain	33.8 mm (1.3 in)	20.6 mm (0.8 in)	9 years	35 of 100 (Notable)
20 April 1938	Perth Regional Office, AU	daily rain	33.3 mm (1.3 in)	12.5 mm (0.5 in)	52 years	35 of 100 (Notable)
20 April 1938	Praha-Klementinum, CZ	daily low min	-2.5 C (27.5 F)	0.2 C (0.4 F)	85 years	35 of 100 (Notable)
20 April 1938	Wongan Hills, AU	daily rain	33.8 mm (1.3 in)	19.8 mm (0.8 in)	9 years	34 of 100 (Routine)
20 April 1938	Wien, AT	daily low min	-1.0 C (30.2 F)	1.1 C (2.0 F)	76 years	34 of 100 (Routine)
20 April 1938	Mingenew, AU	daily rain	27.7 mm (1.1 in)	20.6 mm (0.8 in)	15 years	33 of 100 (Routine)
20 April 1938	Subiaco, AU	daily rain	31.8 mm (1.3 in)	22.4 mm (0.9 in)	0 years	33 of 100 (Routine)
20 April 1938	Schreiber, CA	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	44 years	33 of 100 (Routine)
20 April 1938	Nungarin, AU	daily rain	25.4 mm (1.0 in)	24.1 mm (0.9 in)	1 year	32 of 100 (Routine)
20 April 1938	Mumby, AU	daily rain	38.1 mm (1.5 in)	22.6 mm (0.9 in)	1 year	30 of 100 (Routine)
20 April 1938	Uppsala_Aut, SE	daily low min	-6.9 C (19.6 F)	0.2 C (0.4 F)	71 years	30 of 100 (Routine)
20 April 1938	Berkshire Valley, AU	monthly rain	41.1 mm (1.6 in)	8.1 mm (0.32 in)	4 years	29 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

1807 to 1938

Records set or tied on this calendar date in each year from 1807 to 1938. 1938 had 339 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 1938-04-20: 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 10	223
10 to 20	36
20 to 30	14
30 to 40	4
40 to 50	1
50 to 60	0
60 to 70	0
70 to 80	1