Weather Records on 30 May 2015

699 weather records were set or tied worldwide on 30 May 2015. Highest significance: Norberg, SE.

Key Facts for 30 May 2015

On 30 May 2015, 699 weather records were set or tied at long-record stations worldwide.
318 were record highs and 118 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 48 monthly and 648 daily.
Norberg set a daily record precipitation of 29.3 mm (1.2 in) on 30 May 2015.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 437 records.

Record Map

699 stations

699 station records on 30 May 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Norberg	Sweden	Record daily precipitation	29.3 mm (1.2 in)	66 of 100 (Major)
Morovis 1 N	Puerto Rico [United States]	Record daily precipitation	125.0 mm (4.9 in)	61 of 100 (Major)
Lillhamra	Sweden	Record daily precipitation	35.7 mm (1.4 in)	61 of 100 (Major)
Riddarhyttan	Sweden	Record daily precipitation	35.8 mm (1.4 in)	59 of 100 (Notable)
Nyhammar	Sweden	Record daily precipitation	33.4 mm (1.3 in)	59 of 100 (Notable)
Warsaw	United States	Record daily precipitation	73.9 mm (2.9 in)	56 of 100 (Notable)
Marion 2 N	United States	Record daily precipitation	41.1 mm (1.6 in)	54 of 100 (Notable)
Hadama	Russia	Record daily precipitation	39.9 mm (1.6 in)	53 of 100 (Notable)
Fagelsjo_D	Sweden	Record daily precipitation	27.2 mm (1.1 in)	53 of 100 (Notable)
Fredriksberg	Sweden	Record daily precipitation	32.2 mm (1.3 in)	52 of 100 (Notable)
Hofors	Sweden	Record daily precipitation	27.0 mm (1.1 in)	52 of 100 (Notable)
Hoglekardalen	Sweden	Record daily precipitation	29.5 mm (1.2 in)	52 of 100 (Notable)
Tanger	Sweden	Record daily precipitation	28.9 mm (1.1 in)	51 of 100 (Notable)
Ludvika	Sweden	Record daily precipitation	34.1 mm (1.3 in)	50 of 100 (Notable)
Bolivar 1 NE	United States	Record daily precipitation	56.1 mm (2.2 in)	50 of 100 (Notable)
Potosi 4 SW	United States	Record daily precipitation	40.6 mm (1.6 in)	50 of 100 (Notable)
Nes Pa Hedmark	Norway	Record daily precipitation	25.3 mm (1.0 in)	49 of 100 (Notable)
Washta	United States	Record low maximum temperature	11.1 C (52.0 F)	49 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record low minimum temperature	14.4 C (57.9 F)	48 of 100 (Notable)
Malvern	United States	Record daily precipitation	54.1 mm (2.1 in)	48 of 100 (Notable)
Anderson 1 N	United States	Record daily precipitation	112.5 mm (4.4 in)	48 of 100 (Notable)
Frankfort Disposal	United States	Record daily precipitation	41.1 mm (1.6 in)	48 of 100 (Notable)
Detour Village	United States	Record daily precipitation	26.9 mm (1.1 in)	48 of 100 (Notable)
Wasola 5N	United States	Record daily precipitation	69.3 mm (2.7 in)	48 of 100 (Notable)
Spansberget	Sweden	Record daily precipitation	34.2 mm (1.3 in)	47 of 100 (Notable)
Wausaukee	United States	Record daily precipitation	95.8 mm (3.8 in)	47 of 100 (Notable)
Syracuse Hancock Intl AP	United States	Record daily precipitation	37.6 mm (1.5 in)	46 of 100 (Notable)
Sagen	Sweden	Record daily precipitation	32.6 mm (1.3 in)	45 of 100 (Notable)
Centralia	United States	Record daily precipitation	40.9 mm (1.6 in)	45 of 100 (Notable)
Kloten	Sweden	Record daily precipitation	30.6 mm (1.2 in)	44 of 100 (Notable)
Mockfjard	Sweden	Record daily precipitation	29.4 mm (1.2 in)	44 of 100 (Notable)
Stamford 1	United States	Record daily precipitation	53.3 mm (2.1 in)	44 of 100 (Notable)
Dala-Jarna	Sweden	Record daily precipitation	28.0 mm (1.1 in)	43 of 100 (Notable)
Long Pool	United States	Record daily precipitation	56.9 mm (2.2 in)	42 of 100 (Notable)
Faulkton	United States	Record low maximum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Cleveland	United States	Record daily precipitation	35.8 mm (1.4 in)	42 of 100 (Notable)
Giles Meteorological Office	Australia	Record daily precipitation	43.8 mm (1.7 in)	41 of 100 (Notable)
Borlange	Sweden	Record daily precipitation	27.9 mm (1.1 in)	41 of 100 (Notable)
Storbron	Sweden	Record daily precipitation	29.1 mm (1.1 in)	41 of 100 (Notable)
Sparkman	United States	Record daily precipitation	90.9 mm (3.6 in)	41 of 100 (Notable)
Monticello	United States	Record high minimum temperature	23.3 C (73.9 F)	41 of 100 (Notable)
Laredo 2	United States	Record daily precipitation	93.5 mm (3.7 in)	41 of 100 (Notable)
Klin	Russia	Record daily precipitation	29.0 mm (1.1 in)	40 of 100 (Notable)
Gaylord	United States	Record daily precipitation	26.9 mm (1.1 in)	40 of 100 (Notable)
Mahackala	Russia	Record high maximum temperature	32.0 C (89.6 F)	39 of 100 (Notable)
Stollet_D	Sweden	Record daily precipitation	26.5 mm (1.0 in)	39 of 100 (Notable)
Nashville 1 E	United States	Record daily precipitation	48.3 mm (1.9 in)	39 of 100 (Notable)
Marshfield 4 WSW	United States	Record daily precipitation	48.3 mm (1.9 in)	39 of 100 (Notable)
Sutton Lake	United States	Record daily precipitation	53.8 mm (2.1 in)	39 of 100 (Notable)
Biri	Norway	Record daily precipitation	27.0 mm (1.1 in)	38 of 100 (Notable)
Kanin Nos	Russia	Record high minimum temperature	7.6 C (45.7 F)	38 of 100 (Notable)
Mys Krilon	Russia	Record high minimum temperature	11.0 C (51.8 F)	38 of 100 (Notable)
Kolsva	Sweden	Record daily precipitation	34.6 mm (1.4 in)	38 of 100 (Notable)
Ostanvik	Sweden	Record daily precipitation	27.2 mm (1.1 in)	38 of 100 (Notable)
Finnbacka_D	Sweden	Record daily precipitation	27.8 mm (1.1 in)	37 of 100 (Notable)
Roi Et	Thailand	Record high minimum temperature	28.7 C (83.7 F)	37 of 100 (Notable)
Pandora	United States	Record daily precipitation	51.3 mm (2.0 in)	37 of 100 (Notable)
Montpelier AP	United States	Record daily precipitation	53.6 mm (2.1 in)	37 of 100 (Notable)
Tbilisi	Georgia	Record high maximum temperature	31.8 C (89.2 F)	36 of 100 (Notable)
Bloomington Wtr Wks	United States	Record daily precipitation	44.5 mm (1.8 in)	36 of 100 (Notable)

Counts by Type and Timescale

699 records

Records set or tied on 30 May 2015 by type: Highest daily maximum 146, Lowest daily maximum 45, Highest daily minimum 172, Lowest daily minimum 73, Heaviest daily rainfall 260, Deepest snow cover 3.

Records on 30 May 2015 by type
Record type	Records
Highest daily maximum	146
Lowest daily maximum	45
Highest daily minimum	172
Lowest daily minimum	73
Heaviest daily rainfall	260
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 30 May 2015 by timescale: all-time 3, monthly 48, daily 648.

How Much Records Were Beaten By

592 broken records

Margins by which the 592 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 300.0. Ties are not counted.

Top 20 by Significance

30 May 2015

Top 20 records on 30 May 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 2015	Norberg, SE	daily rain	29.3 mm (1.2 in)	23.7 mm (0.9 in)	65 years	66 of 100 (Major)
30 May 2015	Morovis 1 N, PR	daily rain	125.0 mm (4.9 in)	90.7 mm (3.6 in)	52 years	61 of 100 (Major)
30 May 2015	Lillhamra, SE	daily rain	35.7 mm (1.4 in)	15.9 mm (0.6 in)	81 years	61 of 100 (Major)
30 May 2015	Riddarhyttan, SE	daily rain	35.8 mm (1.4 in)	15.8 mm (0.6 in)	72 years	59 of 100 (Notable)
30 May 2015	Nyhammar, SE	daily rain	33.4 mm (1.3 in)	16.9 mm (0.7 in)	69 years	59 of 100 (Notable)
30 May 2015	Warsaw, US	daily rain	73.9 mm (2.9 in)	52.6 mm (2.1 in)	21 years	56 of 100 (Notable)
30 May 2015	Marion 2 N, US	daily rain	41.1 mm (1.6 in)	22.0 mm (0.9 in)	73 years	54 of 100 (Notable)
30 May 2015	Hadama, RU	monthly rain	39.9 mm (1.6 in)	13.0 mm (0.5 in)	28 years	53 of 100 (Notable)
30 May 2015	Fagelsjo_D, SE	daily rain	27.2 mm (1.1 in)	16.9 mm (0.7 in)	42 years	53 of 100 (Notable)
30 May 2015	Fredriksberg, SE	daily rain	32.2 mm (1.3 in)	21.7 mm (0.9 in)	32 years	52 of 100 (Notable)
30 May 2015	Hofors, SE	daily rain	27.0 mm (1.1 in)	17.4 mm (0.7 in)	34 years	52 of 100 (Notable)
30 May 2015	Hoglekardalen, SE	daily rain	29.5 mm (1.2 in)	20.4 mm (0.8 in)	26 years	52 of 100 (Notable)
30 May 2015	Tanger, SE	daily rain	28.9 mm (1.1 in)	17.3 mm (0.7 in)	14 years	51 of 100 (Notable)
30 May 2015	Ludvika, SE	daily rain	34.1 mm (1.3 in)	24.2 mm (1.0 in)	8 years	50 of 100 (Notable)
30 May 2015	Bolivar 1 NE, US	daily rain	56.1 mm (2.2 in)	30.4 mm (1.2 in)	69 years	50 of 100 (Notable)
30 May 2015	Potosi 4 SW, US	daily rain	40.6 mm (1.6 in)	13.9 mm (0.5 in)	118 years	50 of 100 (Notable)
30 May 2015	Nes Pa Hedmark, NO	daily rain	25.3 mm (1.0 in)	14.4 mm (0.6 in)	34 years	49 of 100 (Notable)
30 May 2015	Washta, US	daily low max	11.1 C (52.0 F)	5.6 C (10.1 F)	106 years	49 of 100 (Notable)
30 May 2015	Manati 2 E, PR	daily low min	14.4 C (57.9 F)	1.2 C (2.2 F)	100 years	48 of 100 (Notable)
30 May 2015	Malvern, US	daily rain	54.1 mm (2.1 in)	19.3 mm (0.8 in)	94 years	48 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 2015

Records set or tied on this calendar date in each year from 1818 to 2015. 2015 had 699 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 2015-05-30: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 50	585
50 to 100	4
100 to 150	0
150 to 200	0
200 to 250	0
250 to 300	3