Weather Records on 30 May 1948

386 weather records were set or tied worldwide on 30 May 1948. Highest significance: Dover, US.

Key Facts for 30 May 1948

On 30 May 1948, 386 weather records were set or tied at long-record stations worldwide.
57 were record highs and 101 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 8 monthly and 378 daily.
Dover set a monthly record daily precipitation of 137.2 mm (5.4 in) on 30 May 1948.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 439 records.

Record Map

386 stations

386 station records on 30 May 1948 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1948: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dover	United States	Record daily precipitation	137.2 mm (5.4 in)	67 of 100 (Major)
Stockton 2	United States	Record daily precipitation	27.4 mm (1.1 in)	59 of 100 (Notable)
Ambur	India	Record daily precipitation	127.0 mm (5.0 in)	57 of 100 (Notable)
Oakdale Woodward Dam	United States	Record daily precipitation	26.7 mm (1.1 in)	56 of 100 (Notable)
Lancaster 2 NE Pump St	United States	Record daily precipitation	79.5 mm (3.1 in)	54 of 100 (Notable)
Fallston	United States	Record daily precipitation	52.8 mm (2.1 in)	51 of 100 (Notable)
Rio Vista	United States	Record daily precipitation	28.4 mm (1.1 in)	48 of 100 (Notable)
Middleboro	United States	Record daily precipitation	45.5 mm (1.8 in)	47 of 100 (Notable)
York 3 SSW Pump STN	United States	Record daily precipitation	50.3 mm (2.0 in)	45 of 100 (Notable)
Henichesk	Ukraine	Record daily precipitation	29.2 mm (1.1 in)	44 of 100 (Notable)
Concord	United States	Record daily precipitation	43.4 mm (1.7 in)	43 of 100 (Notable)
Sacramento 5 ESE	United States	Record daily precipitation	42.4 mm (1.7 in)	43 of 100 (Notable)
Eastman 1 W	United States	Record daily precipitation	78.5 mm (3.1 in)	42 of 100 (Notable)
Spot Pond	United States	Record daily precipitation	42.7 mm (1.7 in)	42 of 100 (Notable)
Woodstock	United States	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Mason City	United States	Record daily precipitation	55.9 mm (2.2 in)	41 of 100 (Notable)
Plainfield	United States	Record daily precipitation	50.5 mm (2.0 in)	41 of 100 (Notable)
Millen 4 N	United States	Record daily precipitation	49.5 mm (1.9 in)	39 of 100 (Notable)
Elizabeth	United States	Record daily precipitation	57.9 mm (2.3 in)	39 of 100 (Notable)
Condah	Australia	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Truro Nsac	Canada	Record daily precipitation	30.0 mm (1.2 in)	38 of 100 (Notable)
Brockton	United States	Record daily precipitation	33.5 mm (1.3 in)	37 of 100 (Notable)
Palasbari	India	Record daily precipitation	75.4 mm (3.0 in)	36 of 100 (Notable)
Lodi	United States	Record daily precipitation	27.7 mm (1.1 in)	36 of 100 (Notable)
Chatham	United States	Record daily precipitation	48.8 mm (1.9 in)	35 of 100 (Notable)
Knights Landing	United States	Record daily precipitation	25.9 mm (1.0 in)	34 of 100 (Routine)
Holtwood	United States	Record daily precipitation	54.6 mm (2.1 in)	34 of 100 (Routine)
Taunton	United States	Record daily precipitation	42.4 mm (1.7 in)	33 of 100 (Routine)
Ny City Cntrl Park	United States	Record daily precipitation	63.2 mm (2.5 in)	33 of 100 (Routine)
Satyavedu	India	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Feodosiia	Ukraine	Record daily precipitation	29.3 mm (1.2 in)	32 of 100 (Routine)
Scarsdale	United States	Record daily precipitation	42.9 mm (1.7 in)	32 of 100 (Routine)
Alix	Canada	Record high minimum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Davis 2 WSW Exp Farm	United States	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Kingston	United States	Record daily precipitation	39.6 mm (1.6 in)	31 of 100 (Routine)
Greenwood	United States	Record daily precipitation	53.3 mm (2.1 in)	31 of 100 (Routine)
Vermillion 2 SE	United States	Record daily precipitation	33.3 mm (1.3 in)	31 of 100 (Routine)
Vaniyambadi	India	Record daily precipitation	58.9 mm (2.3 in)	30 of 100 (Routine)
Monticello	United States	Record daily precipitation	64.0 mm (2.5 in)	30 of 100 (Routine)
Phillipsburg	United States	Record daily precipitation	30.2 mm (1.2 in)	30 of 100 (Routine)
Allentown Gas Company	United States	Record daily precipitation	46.7 mm (1.8 in)	30 of 100 (Routine)
Fort Simpson	Canada	Record high maximum temperature	31.7 C (89.1 F)	29 of 100 (Routine)
Vellore	India	Record daily precipitation	42.9 mm (1.7 in)	29 of 100 (Routine)
Lebanon 3 W	United States	Record daily precipitation	41.1 mm (1.6 in)	28 of 100 (Routine)
Blair	United States	Record daily precipitation	70.4 mm (2.8 in)	28 of 100 (Routine)
Poowong (Post Office)	Australia	Record daily precipitation	26.9 mm (1.1 in)	27 of 100 (Routine)
Wolfville	Canada	Record daily precipitation	27.2 mm (1.1 in)	27 of 100 (Routine)
Woodland 1 WNW	United States	Record daily precipitation	27.2 mm (1.1 in)	27 of 100 (Routine)
Annapolis US Naval Aca	United States	Record daily precipitation	38.9 mm (1.5 in)	27 of 100 (Routine)
Blue Hill Coop	United States	Record daily precipitation	32.5 mm (1.3 in)	27 of 100 (Routine)
Barkerville	Canada	Record high minimum temperature	10.0 C (50.0 F)	26 of 100 (Routine)
Kristianstad	Sweden	Record low maximum temperature	11.0 C (51.8 F)	26 of 100 (Routine)
Lambertville River	United States	Record daily precipitation	50.8 mm (2.0 in)	26 of 100 (Routine)
Newark Liberty Intl AP	United States	Record daily precipitation	44.2 mm (1.7 in)	26 of 100 (Routine)
Washington	United States	Record daily precipitation	36.8 mm (1.4 in)	26 of 100 (Routine)
Salina	United States	Record daily precipitation	41.1 mm (1.6 in)	25 of 100 (Routine)
Flemington 5 NNW	United States	Record daily precipitation	39.6 mm (1.6 in)	25 of 100 (Routine)
Coatesville 1 SW	United States	Record daily precipitation	36.6 mm (1.4 in)	25 of 100 (Routine)
Summerville 4W	United States	Record daily precipitation	32.5 mm (1.3 in)	25 of 100 (Routine)
Dale Enterprise	United States	Record daily precipitation	35.6 mm (1.4 in)	25 of 100 (Routine)

Counts by Type and Timescale

386 records

Records set or tied on 30 May 1948 by type: Highest daily maximum 7, Lowest daily maximum 85, Highest daily minimum 50, Lowest daily minimum 16, Heaviest daily rainfall 228.

Records on 30 May 1948 by type
Record type	Records
Highest daily maximum	7
Lowest daily maximum	85
Highest daily minimum	50
Lowest daily minimum	16
Heaviest daily rainfall	228
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 May 1948 by timescale: all-time 0, monthly 8, daily 378.

How Much Records Were Beaten By

332 broken records

Margins by which the 332 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 104.1. Ties are not counted.

Top 20 by Significance

30 May 1948

Top 20 records on 30 May 1948 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1948	Dover, US	monthly rain	137.2 mm (5.4 in)	46.3 mm (1.8 in)	40 years	67 of 100 (Major)
30 May 1948	Stockton 2, US	daily rain	27.4 mm (1.1 in)	25.9 mm (1.0 in)	53 years	59 of 100 (Notable)
30 May 1948	Ambur, IN	daily rain	127.0 mm (5.0 in)	104.1 mm (4.1 in)	44 years	57 of 100 (Notable)
30 May 1948	Oakdale Woodward Dam, US	daily rain	26.7 mm (1.1 in)	26.7 mm (1.1 in)	42 years	56 of 100 (Notable)
30 May 1948	Lancaster 2 NE Pump St, US	daily rain	79.5 mm (3.1 in)	63.5 mm (2.5 in)	31 years	54 of 100 (Notable)
30 May 1948	Fallston, US	daily rain	52.8 mm (2.1 in)	42.6 mm (1.7 in)	27 years	51 of 100 (Notable)
30 May 1948	Rio Vista, US	daily rain	28.4 mm (1.1 in)	23.8 mm (0.9 in)	12 years	48 of 100 (Notable)
30 May 1948	Middleboro, US	daily rain	45.5 mm (1.8 in)	26.4 mm (1.0 in)	50 years	47 of 100 (Notable)
30 May 1948	York 3 SSW Pump STN, US	daily rain	50.3 mm (2.0 in)	40.4 mm (1.6 in)	5 years	45 of 100 (Notable)
30 May 1948	Henichesk, UA	daily rain	29.2 mm (1.1 in)	13.0 mm (0.5 in)	50 years	44 of 100 (Notable)
30 May 1948	Concord, US	daily rain	43.4 mm (1.7 in)	29.4 mm (1.2 in)	23 years	43 of 100 (Notable)
30 May 1948	Sacramento 5 ESE, US	daily rain	42.4 mm (1.7 in)	23.6 mm (0.9 in)	8 years	43 of 100 (Notable)
30 May 1948	Eastman 1 W, US	daily rain	78.5 mm (3.1 in)	52.6 mm (2.1 in)	1 year	42 of 100 (Notable)
30 May 1948	Spot Pond, US	daily rain	42.7 mm (1.7 in)	27.7 mm (1.1 in)	40 years	42 of 100 (Notable)
30 May 1948	Woodstock, US	daily rain	44.5 mm (1.8 in)	25.4 mm (1.0 in)	44 years	41 of 100 (Notable)
30 May 1948	Mason City, US	daily rain	55.9 mm (2.2 in)	26.9 mm (1.1 in)	51 years	41 of 100 (Notable)
30 May 1948	Plainfield, US	daily rain	50.5 mm (2.0 in)	27.4 mm (1.1 in)	40 years	41 of 100 (Notable)
30 May 1948	Millen 4 N, US	daily rain	49.5 mm (1.9 in)	33.0 mm (1.3 in)	36 years	39 of 100 (Notable)
30 May 1948	Elizabeth, US	daily rain	57.9 mm (2.3 in)	28.9 mm (1.1 in)	40 years	39 of 100 (Notable)
30 May 1948	Condah, AU	daily rain	25.4 mm (1.0 in)	13.5 mm (0.5 in)	44 years	38 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

1818 to 1948

Records set or tied on this calendar date in each year from 1818 to 1948. 1948 had 386 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1948-05-30: 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 20	297
20 to 40	29
40 to 60	4
60 to 80	1
80 to 100	0
100 to 120	1