Weather Records on 20 April 1930

87 weather records were set or tied worldwide on 20 April 1930. Highest significance: Iowa Falls, US.

Key Facts for 20 April 1930

On 20 April 1930, 87 weather records were set or tied at long-record stations worldwide.
44 were record highs and 13 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 86 daily.
Iowa Falls set a daily record precipitation of 50.8 mm (2.0 in) on 20 April 1930.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 464 records.

Record Map

87 stations

87 station records on 20 April 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Iowa Falls	United States	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Lancaster 4 WSW	United States	Record daily precipitation	44.2 mm (1.7 in)	28 of 100 (Routine)
Webster City	United States	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Mt Carroll	United States	Record daily precipitation	49.0 mm (1.9 in)	25 of 100 (Routine)
Independence	United States	Record daily precipitation	35.6 mm (1.4 in)	25 of 100 (Routine)
Granite Reef Dam	United States	Record high maximum temperature	40.0 C (104.0 F)	24 of 100 (Routine)
Hypoluxo	United States	Record daily precipitation	42.7 mm (1.7 in)	23 of 100 (Routine)
Portland Rfc City	United States	Record high minimum temperature	11.7 C (53.1 F)	23 of 100 (Routine)
Santa Fe	United States	Record high maximum temperature	22.8 C (73.0 F)	22 of 100 (Routine)
Bird Rocks	Canada	Record daily snowfall	5.6 cm (2.2 in)	21 of 100 (Routine)
Toledo 3N	United States	Record daily precipitation	38.6 mm (1.5 in)	21 of 100 (Routine)
Babuskin	Russia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Ames 3 SW	United States	Record daily precipitation	27.9 mm (1.1 in)	20 of 100 (Routine)
Ladner	Canada	Record high maximum temperature	20.6 C (69.1 F)	19 of 100 (Routine)
Austin #2	United States	Record high maximum temperature	26.1 C (79.0 F)	18 of 100 (Routine)
Yeeda	Australia	Record daily precipitation	6.1 mm (0.24 in)	17 of 100 (Routine)
Orebro	Sweden	Record low maximum temperature	2.8 C (37.0 F)	17 of 100 (Routine)
Aberdeen	United States	Record high minimum temperature	10.6 C (51.1 F)	16 of 100 (Routine)
Roros	Norway	Record daily precipitation	5.0 mm (0.20 in)	15 of 100 (Routine)
Troicko-Pecherskoe	Russia	Record low minimum temperature	-20.0 C (-4.0 F)	15 of 100 (Routine)
Independence	United States	Record high maximum temperature	29.4 C (84.9 F)	15 of 100 (Routine)
Seattle Urban Site	United States	Record high minimum temperature	10.6 C (51.1 F)	15 of 100 (Routine)
Kirchdorf/Poel	Germany	Record low maximum temperature	4.9 C (40.8 F)	14 of 100 (Routine)
Claremont Pomona Clg	United States	Record high maximum temperature	33.3 C (91.9 F)	14 of 100 (Routine)
Redlands	United States	Record high maximum temperature	35.6 C (96.1 F)	14 of 100 (Routine)
San Bernardino F S 226	United States	Record high maximum temperature	35.6 C (96.1 F)	14 of 100 (Routine)
Waverly	United States	Record daily precipitation	30.2 mm (1.2 in)	14 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record low maximum temperature	1.0 C (33.8 F)	13 of 100 (Routine)
Oracle	United States	Record high maximum temperature	32.2 C (90.0 F)	13 of 100 (Routine)
Tombstone	United States	Record daily precipitation	2.8 mm (0.11 in)	13 of 100 (Routine)
Forest City 2 NNE	United States	Record daily precipitation	21.3 mm (0.8 in)	13 of 100 (Routine)
Forest Grove	United States	Record high minimum temperature	7.8 C (46.0 F)	13 of 100 (Routine)
Masset Airport	Canada	Record high maximum temperature	15.6 C (60.1 F)	12 of 100 (Routine)
Indianola 1SW	United States	Record daily precipitation	38.1 mm (1.5 in)	12 of 100 (Routine)
Thackaringa	Australia	Record daily precipitation	2.0 mm (0.08 in)	11 of 100 (Routine)
Clayoquot	Canada	Record high minimum temperature	8.3 C (46.9 F)	11 of 100 (Routine)
Bella Coola	Canada	Record high minimum temperature	7.8 C (46.0 F)	11 of 100 (Routine)
Steveston	Canada	Record high maximum temperature	16.7 C (62.1 F)	11 of 100 (Routine)
Stockholm	Sweden	Record low maximum temperature	0.5 C (32.9 F)	11 of 100 (Routine)
Needles	United States	Record high maximum temperature	38.3 C (100.9 F)	11 of 100 (Routine)
Corvallis State UNIV	United States	Record high minimum temperature	10.0 C (50.0 F)	11 of 100 (Routine)
Rosebud	United States	Record daily precipitation	9.7 mm (0.38 in)	11 of 100 (Routine)
Lakeside	United States	Record high minimum temperature	10.0 C (50.0 F)	11 of 100 (Routine)
Willapa Harbor	United States	Record high minimum temperature	11.1 C (52.0 F)	11 of 100 (Routine)
Yorketown	Australia	Record daily precipitation	6.9 mm (0.27 in)	10 of 100 (Routine)
Smith Bay (Smiths Bay)	Australia	Record daily precipitation	7.4 mm (0.29 in)	10 of 100 (Routine)
Clayoquot	Canada	Record high maximum temperature	17.8 C (64.0 F)	10 of 100 (Routine)
Buckeye	United States	Record high maximum temperature	38.9 C (102.0 F)	10 of 100 (Routine)
Parker	United States	Record high maximum temperature	40.0 C (104.0 F)	10 of 100 (Routine)
Agricultural College	United States	Record high maximum temperature	32.8 C (91.0 F)	10 of 100 (Routine)
Nanaimo	Canada	Record high minimum temperature	11.1 C (52.0 F)	9 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record low minimum temperature	-10.2 C (13.6 F)	9 of 100 (Routine)
Timovskoe	Russia	Record low minimum temperature	-15.7 C (3.7 F)	9 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record high minimum temperature	9.2 C (48.6 F)	9 of 100 (Routine)
Bartow 1SE	United States	Record daily precipitation	10.7 mm (0.4 in)	9 of 100 (Routine)
Belle Plaine	United States	Record daily precipitation	36.6 mm (1.4 in)	9 of 100 (Routine)
Estherville 4E	United States	Record daily precipitation	20.3 mm (0.8 in)	9 of 100 (Routine)
Winterswijk	Netherlands	Record daily precipitation	6.1 mm (0.24 in)	8 of 100 (Routine)
Prescott	United States	Record high maximum temperature	28.9 C (84.0 F)	8 of 100 (Routine)
Tucson WFO	United States	Record high maximum temperature	35.6 C (96.1 F)	8 of 100 (Routine)

Counts by Type and Timescale

87 records

Records set or tied on 20 April 1930 by type: Highest daily maximum 27, Lowest daily maximum 8, Highest daily minimum 17, Lowest daily minimum 5, Heaviest daily rainfall 29, Heaviest daily snowfall 1.

Records on 20 April 1930 by type
Record type	Records
Highest daily maximum	27
Lowest daily maximum	8
Highest daily minimum	17
Lowest daily minimum	5
Heaviest daily rainfall	29
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 20 April 1930 by timescale: all-time 0, monthly 1, daily 86.

How Much Records Were Beaten By

68 broken records

Margins by which the 68 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 34.1. Ties are not counted.

Top 20 by Significance

20 April 1930

Top 20 records on 20 April 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 1930	Iowa Falls, US	daily rain	50.8 mm (2.0 in)	23.4 mm (0.9 in)	33 years	38 of 100 (Notable)
20 April 1930	Lancaster 4 WSW, US	daily rain	44.2 mm (1.7 in)	16.3 mm (0.6 in)	24 years	28 of 100 (Routine)
20 April 1930	Webster City, US	daily rain	33.0 mm (1.3 in)	12.2 mm (0.5 in)	32 years	26 of 100 (Routine)
20 April 1930	Mt Carroll, US	daily rain	49.0 mm (1.9 in)	19.8 mm (0.8 in)	0 years	25 of 100 (Routine)
20 April 1930	Independence, US	daily rain	35.6 mm (1.4 in)	10.2 mm (0.4 in)	36 years	25 of 100 (Routine)
20 April 1930	Granite Reef Dam, US	monthly high max	40.0 C (104.0 F)	1.1 C (2.0 F)	31 years	24 of 100 (Routine)
20 April 1930	Hypoluxo, US	daily rain	42.7 mm (1.7 in)	34.1 mm (1.3 in)	12 years	23 of 100 (Routine)
20 April 1930	Portland Rfc City, US	daily high min	11.7 C (53.1 F)	0.6 C (1.1 F)	54 years	23 of 100 (Routine)
20 April 1930	Santa Fe, US	daily high max	22.8 C (73.0 F)	0.6 C (1.1 F)	53 years	22 of 100 (Routine)
20 April 1930	Bird Rocks, CA	daily snowfall	5.6 cm (2.2 in)	1.0 cm (0.4 in)	46 years	21 of 100 (Routine)
20 April 1930	Toledo 3N, US	daily rain	38.6 mm (1.5 in)	10.7 mm (0.4 in)	24 years	21 of 100 (Routine)
20 April 1930	Babuskin, RU	daily rain	16.0 mm (0.6 in)	8.0 mm (0.31 in)	24 years	20 of 100 (Routine)
20 April 1930	Ames 3 SW, US	daily rain	27.9 mm (1.1 in)	8.3 mm (0.33 in)	32 years	20 of 100 (Routine)
20 April 1930	Ladner, CA	daily high max	20.6 C (69.1 F)	2.3 C (4.1 F)	24 years	19 of 100 (Routine)
20 April 1930	Austin #2, US	daily high max	26.1 C (79.0 F)	1.7 C (3.1 F)	41 years	18 of 100 (Routine)
20 April 1930	Yeeda, AU	daily rain	6.1 mm (0.24 in)	6.1 mm (0.24 in)	37 years	17 of 100 (Routine)
20 April 1930	Orebro, SE	daily low max	2.8 C (37.0 F)	0.2 C (0.4 F)	45 years	17 of 100 (Routine)
20 April 1930	Aberdeen, US	daily high min	10.6 C (51.1 F)	1.7 C (3.1 F)	25 years	16 of 100 (Routine)
20 April 1930	Roros, NO	daily rain	5.0 mm (0.20 in)	2.2 mm (0.09 in)	4 years	15 of 100 (Routine)
20 April 1930	Troicko-Pecherskoe, RU	daily low min	-20.0 C (-4.0 F)	2.7 C (4.9 F)	28 years	15 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 1930

Records set or tied on this calendar date in each year from 1807 to 1930. 1930 had 87 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 1930-04-20: 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 5	57
5 to 10	3
10 to 15	4
15 to 20	2
20 to 25	1
25 to 30	0
30 to 35	1