Weather Records on 20 May 1930

129 weather records were set or tied worldwide on 20 May 1930. Highest significance: Bucuresti Filaret, RO.

Key Facts for 20 May 1930

On 20 May 1930, 129 weather records were set or tied at long-record stations worldwide.
52 were record highs and 32 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 128 daily.
Bucuresti Filaret set a daily record precipitation of 48.0 mm (1.9 in) on 20 May 1930.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 458 records.

Record Map

129 stations

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

Weather records on 20 May 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bucuresti Filaret	Romania	Record daily precipitation	48.0 mm (1.9 in)	46 of 100 (Notable)
Parkers Landing	United States	Record daily precipitation	44.5 mm (1.8 in)	40 of 100 (Notable)
Astoria	United States	Record daily precipitation	35.3 mm (1.4 in)	33 of 100 (Routine)
Olympia Priest Pt Park	United States	Record daily precipitation	29.2 mm (1.1 in)	25 of 100 (Routine)
Hewitt	United States	Record daily precipitation	40.1 mm (1.6 in)	22 of 100 (Routine)
Haparanda	Sweden	Record high minimum temperature	8.0 C (46.4 F)	21 of 100 (Routine)
Beaver Lake	Canada	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Quesnel	Canada	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	8.0 C (46.4 F)	20 of 100 (Routine)
Crescent City 3 NNW	United States	Record daily precipitation	29.7 mm (1.2 in)	20 of 100 (Routine)
Bartow 1SE	United States	Record high minimum temperature	23.3 C (73.9 F)	20 of 100 (Routine)
Williamstown	United States	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Lowville	United States	Record daily precipitation	22.9 mm (0.9 in)	19 of 100 (Routine)
Agassiz Cda	Canada	Record daily precipitation	22.1 mm (0.9 in)	18 of 100 (Routine)
Quebec	Canada	Record low maximum temperature	7.8 C (46.0 F)	18 of 100 (Routine)
Brogers Creek Upper (Cookville	Australia	Record daily precipitation	61.0 mm (2.4 in)	17 of 100 (Routine)
Clontarf	Canada	Record daily precipitation	17.8 mm (0.7 in)	17 of 100 (Routine)
Vinga	Sweden	Record daily precipitation	11.0 mm (0.4 in)	17 of 100 (Routine)
Tampa	United States	Record high minimum temperature	23.9 C (75.0 F)	17 of 100 (Routine)
Eureka	United States	Record high minimum temperature	11.1 C (52.0 F)	17 of 100 (Routine)
Salisbury	United States	Record daily precipitation	27.2 mm (1.1 in)	17 of 100 (Routine)
Cheraw	United States	Record high minimum temperature	22.2 C (72.0 F)	17 of 100 (Routine)
Kennewick	United States	Record daily precipitation	4.8 mm (0.19 in)	17 of 100 (Routine)
Halifax	Canada	Record low maximum temperature	5.6 C (42.1 F)	16 of 100 (Routine)
Fernandina Beach	United States	Record high minimum temperature	23.3 C (73.9 F)	16 of 100 (Routine)
Lewiston	United States	Record low maximum temperature	7.8 C (46.0 F)	16 of 100 (Routine)
Keene	United States	Record daily precipitation	20.6 mm (0.8 in)	16 of 100 (Routine)
Amenia	United States	Record high maximum temperature	32.2 C (90.0 F)	16 of 100 (Routine)
Osijek	Croatia	Record low maximum temperature	12.6 C (54.7 F)	15 of 100 (Routine)
Summerville 4W	United States	Record high minimum temperature	21.7 C (71.1 F)	15 of 100 (Routine)
Seattle Urban Site	United States	Record daily precipitation	22.9 mm (0.9 in)	15 of 100 (Routine)
Alberni Beaver Creek	Canada	Record daily precipitation	25.1 mm (1.0 in)	14 of 100 (Routine)
Avon Park 2 W	United States	Record daily precipitation	27.9 mm (1.1 in)	14 of 100 (Routine)
Fernandina Beach	United States	Record high maximum temperature	35.0 C (95.0 F)	14 of 100 (Routine)
Lake City 2 E	United States	Record high minimum temperature	23.9 C (75.0 F)	14 of 100 (Routine)
Ocala	United States	Record high maximum temperature	36.7 C (98.1 F)	14 of 100 (Routine)
Little Falls City Rsch	United States	Record daily precipitation	27.4 mm (1.1 in)	14 of 100 (Routine)
Southport 5 N	United States	Record high minimum temperature	22.8 C (73.0 F)	14 of 100 (Routine)
Grand Forks UNIV (NWS)	United States	Record high maximum temperature	30.0 C (86.0 F)	14 of 100 (Routine)
Beaufort Wwtp	United States	Record high minimum temperature	23.9 C (75.0 F)	14 of 100 (Routine)
Saint John	Canada	Record low maximum temperature	6.7 C (44.1 F)	13 of 100 (Routine)
Wolfville	Canada	Record low maximum temperature	6.7 C (44.1 F)	13 of 100 (Routine)
Tsomo (Pol)	South Africa	Record daily precipitation	5.3 mm (0.21 in)	13 of 100 (Routine)
Malung	Sweden	Record daily precipitation	13.3 mm (0.5 in)	13 of 100 (Routine)
Oracle	United States	Record high maximum temperature	33.9 C (93.0 F)	13 of 100 (Routine)
Federal Pt	United States	Record high minimum temperature	21.7 C (71.1 F)	13 of 100 (Routine)
Rumford	United States	Record low maximum temperature	7.8 C (46.0 F)	13 of 100 (Routine)
Plymouth	United States	Record low maximum temperature	10.0 C (50.0 F)	13 of 100 (Routine)
Indian Lake 2SW	United States	Record low maximum temperature	7.8 C (46.0 F)	13 of 100 (Routine)
Fayetteville (Pwc)	United States	Record high minimum temperature	21.1 C (70.0 F)	13 of 100 (Routine)
Saint Johnsbury	United States	Record daily precipitation	22.6 mm (0.9 in)	13 of 100 (Routine)
Dwtn Charleston	United States	Record high minimum temperature	23.9 C (75.0 F)	13 of 100 (Routine)
Cairns Post Office	Australia	Record high maximum temperature	31.7 C (89.1 F)	12 of 100 (Routine)
Moncton	Canada	Record low maximum temperature	7.2 C (45.0 F)	12 of 100 (Routine)
Nuwara Eliya	Sri Lanka	Record low minimum temperature	6.1 C (43.0 F)	12 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record high minimum temperature	14.7 C (58.5 F)	12 of 100 (Routine)
Eustis 2 S	United States	Record high minimum temperature	22.2 C (72.0 F)	12 of 100 (Routine)
Ashland	United States	Record low minimum temperature	6.7 C (44.1 F)	12 of 100 (Routine)
Renova	United States	Record high minimum temperature	11.7 C (53.1 F)	12 of 100 (Routine)
Hanover	United States	Record low maximum temperature	9.4 C (48.9 F)	12 of 100 (Routine)

Counts by Type and Timescale

129 records

Records set or tied on 20 May 1930 by type: Highest daily maximum 18, Lowest daily maximum 24, Highest daily minimum 34, Lowest daily minimum 8, Heaviest daily rainfall 45.

Records on 20 May 1930 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	24
Highest daily minimum	34
Lowest daily minimum	8
Heaviest daily rainfall	45
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 May 1930 by timescale: all-time 0, monthly 1, daily 128.

How Much Records Were Beaten By

97 broken records

Margins by which the 97 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 28.3. Ties are not counted.

Top 20 by Significance

20 May 1930

Top 20 records on 20 May 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1930	Bucuresti Filaret, RO	daily rain	48.0 mm (1.9 in)	28.3 mm (1.1 in)	16 years	46 of 100 (Notable)
20 May 1930	Parkers Landing, US	daily rain	44.5 mm (1.8 in)	26.2 mm (1.0 in)	21 years	40 of 100 (Notable)
20 May 1930	Astoria, US	daily rain	35.3 mm (1.4 in)	16.5 mm (0.6 in)	27 years	33 of 100 (Routine)
20 May 1930	Olympia Priest Pt Park, US	daily rain	29.2 mm (1.1 in)	8.1 mm (0.32 in)	24 years	25 of 100 (Routine)
20 May 1930	Hewitt, US	daily rain	40.1 mm (1.6 in)	9.6 mm (0.38 in)	44 years	22 of 100 (Routine)
20 May 1930	Haparanda, SE	daily high min	8.0 C (46.4 F)	2.0 C (3.6 F)	39 years	21 of 100 (Routine)
20 May 1930	Beaver Lake, CA	daily rain	14.2 mm (0.6 in)	5.3 mm (0.21 in)	24 years	20 of 100 (Routine)
20 May 1930	Quesnel, CA	daily rain	10.7 mm (0.4 in)	6.4 mm (0.25 in)	7 years	20 of 100 (Routine)
20 May 1930	Pitea, SE	daily high min	8.0 C (46.4 F)	2.0 C (3.6 F)	39 years	20 of 100 (Routine)
20 May 1930	Crescent City 3 NNW, US	daily rain	29.7 mm (1.2 in)	19.8 mm (0.8 in)	4 years	20 of 100 (Routine)
20 May 1930	Bartow 1SE, US	daily high min	23.3 C (73.9 F)	2.2 C (4.0 F)	33 years	20 of 100 (Routine)
20 May 1930	Williamstown, US	daily rain	11.2 mm (0.4 in)	4.6 mm (0.18 in)	35 years	20 of 100 (Routine)
20 May 1930	Lowville, US	daily rain	22.9 mm (0.9 in)	3.8 mm (0.15 in)	37 years	19 of 100 (Routine)
20 May 1930	Agassiz Cda, CA	daily rain	22.1 mm (0.9 in)	5.8 mm (0.23 in)	24 years	18 of 100 (Routine)
20 May 1930	Quebec, CA	daily low max	7.8 C (46.0 F)	1.6 C (2.9 F)	37 years	18 of 100 (Routine)
20 May 1930	Brogers Creek Upper (Cookville, AU	daily rain	61.0 mm (2.4 in)	24.4 mm (1.0 in)	21 years	17 of 100 (Routine)
20 May 1930	Clontarf, CA	daily rain	17.8 mm (0.7 in)	4.8 mm (0.19 in)	28 years	17 of 100 (Routine)
20 May 1930	Vinga, SE	daily rain	11.0 mm (0.4 in)	1.0 mm (0.04 in)	33 years	17 of 100 (Routine)
20 May 1930	Tampa, US	daily high min	23.9 C (75.0 F)	1.1 C (2.0 F)	30 years	17 of 100 (Routine)
20 May 1930	Eureka, US	daily high min	11.1 C (52.0 F)	0.5 C (0.9 F)	40 years	17 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

1802 to 1930

Records set or tied on this calendar date in each year from 1802 to 1930. 1930 had 129 records.

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

Records on 05-20 in each year
Year	Records
1802	1
1803	1
1804	1
1815	1
1825	1
1837	1
1844	1
1845	3
1847	1
1854	1
1858	3
1861	1
1862	1
1865	1
1867	1
1868	2
1870	3
1871	2
1876	2
1877	3
1879	1
1880	2
1884	2
1885	1
1887	2
1889	3
1890	3
1891	5
1892	3
1893	1
1894	6
1895	3
1896	3
1897	3
1898	4
1899	4
1900	1
1901	5
1902	11
1903	19
1904	4
1905	4
1906	22
1907	35
1908	23
1909	10
1910	20
1911	82
1912	20
1913	10
1914	16
1915	42
1916	29
1917	46
1918	92
1919	56
1920	44
1921	234
1922	40
1923	125
1924	189
1925	251
1926	128
1927	118
1928	138
1929	323
1930	129
1931	451
1932	689
1933	449
1934	582
1935	259
1936	207
1937	270
1938	331
1939	266
1940	337
1941	378
1942	337
1943	802
1944	315
1945	498
1946	339
1947	358
1948	514
1949	586
1950	327
1951	288
1952	615
1953	518
1954	822
1955	421
1956	565
1957	728
1958	378
1959	785
1960	612
1961	333
1962	773
1963	732
1964	517
1965	200
1966	416
1967	587
1968	743
1969	885
1970	310
1971	653
1972	612
1973	419
1974	893
1975	1,332
1976	837
1977	553
1978	534
1979	683
1980	751
1981	1,540
1982	554
1983	1,307
1984	867
1985	426
1986	790
1987	1,036
1988	805
1989	764
1990	722
1991	925
1992	1,200
1993	1,208
1994	778
1995	734
1996	1,749
1997	1,106
1998	1,124
1999	673
2000	991
2001	847
2002	2,299
2003	1,201
2004	746
2005	929
2006	1,006
2007	565
2008	999
2009	1,529
2010	1,011
2011	1,117
2012	604
2013	919
2014	629
2015	1,001
2016	692
2017	1,214
2018	460
2019	1,483
2020	784
2021	904
2022	1,643
2023	1,106
2024	478
2025	969
2026	696

Download the Data

Data for records on 1930-05-20: 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	77
5 to 10	10
10 to 15	4
15 to 20	3
20 to 25	1
25 to 30	2