Weather Records on 15 May 1930

136 weather records were set or tied worldwide on 15 May 1930. Highest significance: Bridgeport, US.

Key Facts for 15 May 1930

On 15 May 1930, 136 weather records were set or tied at long-record stations worldwide.
19 were record highs and 39 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 136 daily.
Bridgeport set a daily record precipitation of 45.0 mm (1.8 in) on 15 May 1930.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 432 records.

Record Map

136 stations

136 station records on 15 May 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 May 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bridgeport	United States	Record daily precipitation	45.0 mm (1.8 in)	44 of 100 (Notable)
Oran-Hopital Militaire	Algeria	Record high maximum temperature	30.0 C (86.0 F)	37 of 100 (Notable)
Lawrenceville 2 S	United States	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Middletown 4 W	United States	Record daily precipitation	38.6 mm (1.5 in)	30 of 100 (Routine)
Cutchogue	United States	Record daily precipitation	34.0 mm (1.3 in)	29 of 100 (Routine)
Setauket Strong	United States	Record daily precipitation	30.2 mm (1.2 in)	29 of 100 (Routine)
Shortsville	United States	Record daily precipitation	31.0 mm (1.2 in)	29 of 100 (Routine)
Philadelphia Shawmont	United States	Record daily precipitation	36.6 mm (1.4 in)	28 of 100 (Routine)
Jerome	United States	Record low minimum temperature	-1.1 C (30.0 F)	25 of 100 (Routine)
Moorestown 4 E	United States	Record daily precipitation	39.9 mm (1.6 in)	25 of 100 (Routine)
Trenton 2	United States	Record daily precipitation	32.0 mm (1.3 in)	23 of 100 (Routine)
The Dalles	United States	Record high minimum temperature	17.8 C (64.0 F)	23 of 100 (Routine)
Plain Dealing	United States	Record daily precipitation	57.2 mm (2.3 in)	22 of 100 (Routine)
Concord	United States	Record low maximum temperature	7.2 C (45.0 F)	22 of 100 (Routine)
Coatesville 1 SW	United States	Record daily precipitation	31.8 mm (1.3 in)	21 of 100 (Routine)
Lodgepole	United States	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Waterville Wwtp	United States	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Waterbury	United States	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Haskinville	United States	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Keene	United States	Record low maximum temperature	10.0 C (50.0 F)	20 of 100 (Routine)
Treherne	Canada	Record daily snowfall	1.3 cm (0.5 in)	19 of 100 (Routine)
Wilmington City Hall	United States	Record daily precipitation	24.6 mm (1.0 in)	19 of 100 (Routine)
Lewiston	United States	Record daily precipitation	21.8 mm (0.9 in)	19 of 100 (Routine)
Frome Downs	Australia	Record daily precipitation	14.0 mm (0.6 in)	18 of 100 (Routine)
Grassy Hill Radio Otc	Australia	Record daily precipitation	17.8 mm (0.7 in)	18 of 100 (Routine)
Biser	Russia	Record high minimum temperature	7.6 C (45.7 F)	18 of 100 (Routine)
Portland	United States	Record daily precipitation	30.7 mm (1.2 in)	18 of 100 (Routine)
Plymouth	United States	Record low maximum temperature	10.0 C (50.0 F)	18 of 100 (Routine)
Carlisle	United States	Record daily precipitation	13.5 mm (0.5 in)	18 of 100 (Routine)
Algiers-Ville/Universite	Algeria	Record high maximum temperature	30.0 C (86.0 F)	17 of 100 (Routine)
Fords Bridge	Australia	Record daily precipitation	26.7 mm (1.1 in)	17 of 100 (Routine)
Quatsino	Canada	Record low minimum temperature	1.1 C (34.0 F)	17 of 100 (Routine)
Orillia	Canada	Record daily precipitation	23.6 mm (0.9 in)	17 of 100 (Routine)
Mareeba Post Office	Australia	Record daily precipitation	4.1 mm (0.16 in)	16 of 100 (Routine)
Teterow	Germany	Record daily precipitation	9.4 mm (0.37 in)	16 of 100 (Routine)
Ft Collins	United States	Record daily precipitation	12.7 mm (0.5 in)	16 of 100 (Routine)
Wappingers Falls	United States	Record low maximum temperature	12.8 C (55.0 F)	16 of 100 (Routine)
Northfield	United States	Record daily precipitation	11.7 mm (0.5 in)	16 of 100 (Routine)
Richmond City Locks	United States	Record daily precipitation	15.5 mm (0.6 in)	16 of 100 (Routine)
Walsh River Post Office	Australia	Record daily precipitation	3.6 mm (0.14 in)	15 of 100 (Routine)
Cooktown Post Office	Australia	Record daily precipitation	17.3 mm (0.7 in)	15 of 100 (Routine)
Sfax El-Maou	Tunisia	Record high maximum temperature	32.0 C (89.6 F)	15 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record daily precipitation	21.1 mm (0.8 in)	15 of 100 (Routine)
Worcester	United States	Record low maximum temperature	7.8 C (46.0 F)	15 of 100 (Routine)
Centre Hall	United States	Record daily precipitation	32.5 mm (1.3 in)	15 of 100 (Routine)
Hamburg	United States	Record daily precipitation	30.5 mm (1.2 in)	15 of 100 (Routine)
Kingston	United States	Record daily precipitation	25.4 mm (1.0 in)	15 of 100 (Routine)
Woodstock	United States	Record low maximum temperature	10.6 C (51.1 F)	15 of 100 (Routine)
Wittenberg	Germany	Record daily precipitation	15.4 mm (0.6 in)	14 of 100 (Routine)
Lemon Cove	United States	Record low maximum temperature	21.1 C (70.0 F)	14 of 100 (Routine)
Bridgeport	United States	Record daily precipitation	19.1 mm (0.8 in)	14 of 100 (Routine)
Kimball 2NE	United States	Record daily precipitation	2.3 mm (0.09 in)	14 of 100 (Routine)
Bedford Hills	United States	Record daily precipitation	19.8 mm (0.8 in)	14 of 100 (Routine)
Gettysburg	United States	Record daily precipitation	22.6 mm (0.9 in)	14 of 100 (Routine)
Warren	United States	Record high minimum temperature	15.6 C (60.1 F)	14 of 100 (Routine)
Williamsport	United States	Record daily precipitation	35.1 mm (1.4 in)	14 of 100 (Routine)
Cle Elum	United States	Record high minimum temperature	10.0 C (50.0 F)	14 of 100 (Routine)
Norway House	Canada	Record low maximum temperature	2.8 C (37.0 F)	13 of 100 (Routine)
Ashland	United States	Record daily precipitation	14.2 mm (0.6 in)	13 of 100 (Routine)
Chestnut Hill	United States	Record low maximum temperature	10.0 C (50.0 F)	13 of 100 (Routine)

Counts by Type and Timescale

136 records

Records set or tied on 15 May 1930 by type: Highest daily maximum 8, Lowest daily maximum 31, Highest daily minimum 11, Lowest daily minimum 8, Heaviest daily rainfall 77, Heaviest daily snowfall 1.

Records on 15 May 1930 by type
Record type	Records
Highest daily maximum	8
Lowest daily maximum	31
Highest daily minimum	11
Lowest daily minimum	8
Heaviest daily rainfall	77
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 15 May 1930 by timescale: all-time 0, monthly 0, daily 136.

How Much Records Were Beaten By

121 broken records

Margins by which the 121 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 37.4. Ties are not counted.

Top 20 by Significance

15 May 1930

Top 20 records on 15 May 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1930	Bridgeport, US	daily rain	45.0 mm (1.8 in)	37.4 mm (1.5 in)	25 years	44 of 100 (Notable)
15 May 1930	Oran-Hopital Militaire, DZ	daily high max	30.0 C (86.0 F)	2.7 C (4.9 F)	69 years	37 of 100 (Notable)
15 May 1930	Lawrenceville 2 S, US	daily rain	34.3 mm (1.4 in)	20.3 mm (0.8 in)	21 years	32 of 100 (Routine)
15 May 1930	Middletown 4 W, US	daily rain	38.6 mm (1.5 in)	23.4 mm (0.9 in)	13 years	30 of 100 (Routine)
15 May 1930	Cutchogue, US	daily rain	34.0 mm (1.3 in)	26.4 mm (1.0 in)	13 years	29 of 100 (Routine)
15 May 1930	Setauket Strong, US	daily rain	30.2 mm (1.2 in)	15.7 mm (0.6 in)	39 years	29 of 100 (Routine)
15 May 1930	Shortsville, US	daily rain	31.0 mm (1.2 in)	12.2 mm (0.5 in)	25 years	29 of 100 (Routine)
15 May 1930	Philadelphia Shawmont, US	daily rain	36.6 mm (1.4 in)	19.3 mm (0.8 in)	31 years	28 of 100 (Routine)
15 May 1930	Jerome, US	daily low min	-1.1 C (30.0 F)	7.2 C (13.0 F)	19 years	25 of 100 (Routine)
15 May 1930	Moorestown 4 E, US	daily rain	39.9 mm (1.6 in)	12.2 mm (0.5 in)	31 years	25 of 100 (Routine)
15 May 1930	Trenton 2, US	daily rain	32.0 mm (1.3 in)	11.7 mm (0.5 in)	31 years	23 of 100 (Routine)
15 May 1930	The Dalles, US	daily high min	17.8 C (64.0 F)	5.0 C (9.0 F)	19 years	23 of 100 (Routine)
15 May 1930	Plain Dealing, US	daily rain	57.2 mm (2.3 in)	35.1 mm (1.4 in)	1 year	22 of 100 (Routine)
15 May 1930	Concord, US	daily low max	7.2 C (45.0 F)	1.7 C (3.1 F)	47 years	22 of 100 (Routine)
15 May 1930	Coatesville 1 SW, US	daily rain	31.8 mm (1.3 in)	12.0 mm (0.5 in)	31 years	21 of 100 (Routine)
15 May 1930	Lodgepole, US	daily rain	23.6 mm (0.9 in)	19.0 mm (0.7 in)	20 years	20 of 100 (Routine)
15 May 1930	Waterville Wwtp, US	daily rain	23.4 mm (0.9 in)	13.2 mm (0.5 in)	29 years	20 of 100 (Routine)
15 May 1930	Waterbury, US	daily rain	21.6 mm (0.9 in)	11.2 mm (0.4 in)	31 years	20 of 100 (Routine)
15 May 1930	Haskinville, US	daily rain	20.3 mm (0.8 in)	11.7 mm (0.5 in)	13 years	20 of 100 (Routine)
15 May 1930	Keene, US	daily low max	10.0 C (50.0 F)	3.9 C (7.0 F)	34 years	20 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

1820 to 1930

Records set or tied on this calendar date in each year from 1820 to 1930. 1930 had 136 records.

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

Records on 05-15 in each year
Year	Records
1820	1
1825	1
1831	1
1832	1
1837	2
1845	1
1847	2
1848	1
1855	2
1857	2
1859	1
1862	1
1863	1
1865	1
1866	2
1867	1
1868	2
1870	1
1871	3
1874	2
1876	4
1878	1
1879	2
1881	1
1883	1
1885	1
1886	2
1888	3
1891	3
1893	5
1894	2
1895	4
1896	2
1897	4
1898	3
1899	9
1900	9
1901	2
1902	9
1903	4
1904	13
1905	16
1906	10
1907	27
1908	25
1909	89
1910	27
1911	27
1912	26
1913	60
1914	16
1915	236
1916	27
1917	80
1918	133
1919	25
1920	58
1921	92
1922	30
1923	125
1924	174
1925	100
1926	161
1927	191
1928	144
1929	161
1930	136
1931	459
1932	368
1933	439
1934	227
1935	288
1936	372
1937	373
1938	393
1939	351
1940	179
1941	454
1942	701
1943	568
1944	630
1945	588
1946	238
1947	334
1948	264
1949	363
1950	260
1951	736
1952	476
1953	426
1954	355
1955	538
1956	466
1957	521
1958	605
1959	764
1960	291
1961	508
1962	1,128
1963	782
1964	347
1965	320
1966	389
1967	609
1968	1,019
1969	790
1970	512
1971	351
1972	484
1973	818
1974	1,230
1975	372
1976	803
1977	1,186
1978	922
1979	404
1980	625
1981	586
1982	500
1983	1,215
1984	1,059
1985	649
1986	679
1987	1,073
1988	643
1989	552
1990	776
1991	1,179
1992	944
1993	784
1994	910
1995	1,750
1996	1,452
1997	1,175
1998	1,641
1999	810
2000	850
2001	1,280
2002	801
2003	1,023
2004	1,046
2005	767
2006	955
2007	949
2008	995
2009	675
2010	1,088
2011	1,298
2012	751
2013	1,081
2014	1,411
2015	717
2016	890
2017	435
2018	1,074
2019	627
2020	472
2021	412
2022	847
2023	566
2024	596
2025	801
2026	481

Download the Data

Data for records on 1930-05-15: 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	83
5 to 10	14
10 to 15	14
15 to 20	5
20 to 25	2
25 to 30	1
30 to 35	0
35 to 40	2