Weather Records on 30 May 2011

1,914 weather records were set or tied worldwide on 30 May 2011. Highest significance: Keanae 346, US.

Key Facts for 30 May 2011

On 30 May 2011, 1,914 weather records were set or tied at long-record stations worldwide.
1,127 were record highs and 323 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 129 monthly and 1,779 daily.
Keanae 346 set a daily record precipitation of 383.5 mm (15.1 in) on 30 May 2011.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 430 records.

Record Map

1,914 stations

1,914 station records on 30 May 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Keanae 346	United States	Record daily precipitation	383.5 mm (15.1 in)	80 of 100 (Exceptional)
Isseka	Australia	Record daily precipitation	81.2 mm (3.2 in)	76 of 100 (Major)
Lupi Upper 442	United States	Record daily precipitation	337.8 mm (13.3 in)	68 of 100 (Major)
Ely AP	United States	Record snow depth	12.7 cm (5.0 in)	68 of 100 (Major)
Owosso Wwtp	United States	Record daily precipitation	37.1 mm (1.5 in)	64 of 100 (Major)
Morgan	United States	Record daily precipitation	45.0 mm (1.8 in)	61 of 100 (Major)
Maizuru Reg Met HQ	Japan	Record daily precipitation	235.0 mm (9.3 in)	59 of 100 (Notable)
Nabawa	Australia	Record daily precipitation	64.0 mm (2.5 in)	58 of 100 (Notable)
Cecil Plains Homestead	Australia	Record daily precipitation	43.0 mm (1.7 in)	58 of 100 (Notable)
Tsuruga	Japan	Record daily precipitation	89.9 mm (3.5 in)	57 of 100 (Notable)
Kyoto	Japan	Record daily precipitation	85.6 mm (3.4 in)	57 of 100 (Notable)
Three Springs	Australia	Record daily precipitation	51.2 mm (2.0 in)	56 of 100 (Notable)
Jondaryan Post Office	Australia	Record daily precipitation	33.0 mm (1.3 in)	56 of 100 (Notable)
Millmerran Post Office	Australia	Record daily precipitation	35.0 mm (1.4 in)	55 of 100 (Notable)
Matsuyama	Japan	Record daily precipitation	64.0 mm (2.5 in)	55 of 100 (Notable)
Fukui	Japan	Record daily precipitation	96.0 mm (3.8 in)	54 of 100 (Notable)
Sandsprings	Australia	Record daily precipitation	55.0 mm (2.2 in)	53 of 100 (Notable)
Sendai	Japan	Record daily precipitation	114.6 mm (4.5 in)	53 of 100 (Notable)
Great Falls 16St	United States	Record daily precipitation	29.0 mm (1.1 in)	53 of 100 (Notable)
Kurrowah	Australia	Record daily precipitation	36.0 mm (1.4 in)	52 of 100 (Notable)
Nagoya	Japan	Record daily precipitation	75.4 mm (3.0 in)	51 of 100 (Notable)
Wakayama	Japan	Record daily precipitation	101.6 mm (4.0 in)	51 of 100 (Notable)
Georgetown	United States	Record high minimum temperature	10.6 C (51.1 F)	51 of 100 (Notable)
Buffalo	United States	Record daily precipitation	47.5 mm (1.9 in)	51 of 100 (Notable)
Maebashi	Japan	Record daily precipitation	70.6 mm (2.8 in)	50 of 100 (Notable)
Takamatsu	Japan	Record daily precipitation	79.5 mm (3.1 in)	50 of 100 (Notable)
Plainview	United States	Record high minimum temperature	22.2 C (72.0 F)	50 of 100 (Notable)
Tottori	Japan	Record daily precipitation	81.0 mm (3.2 in)	49 of 100 (Notable)
Ishinomaki	Japan	Record daily precipitation	61.0 mm (2.4 in)	48 of 100 (Notable)
Hikone	Japan	Record daily precipitation	57.9 mm (2.3 in)	48 of 100 (Notable)
De Kalb	United States	Record daily precipitation	49.8 mm (2.0 in)	48 of 100 (Notable)
Lake Yellowstone	United States	Record snow depth	63.5 cm (25.0 in)	48 of 100 (Notable)
Glenelg	Australia	Record daily precipitation	30.8 mm (1.2 in)	47 of 100 (Notable)
Laketown	United States	Record daily snowfall	10.2 cm (4.0 in)	47 of 100 (Notable)
Leyburn Post Office	Australia	Record daily precipitation	32.6 mm (1.3 in)	46 of 100 (Notable)
Dyer 5S	United States	Record low maximum temperature	12.2 C (54.0 F)	46 of 100 (Notable)
Laketown	United States	Record low maximum temperature	7.2 C (45.0 F)	46 of 100 (Notable)
Church Buttes Gas Plt	United States	Record daily snowfall	10.2 cm (4.0 in)	46 of 100 (Notable)
Emblem	United States	Record daily precipitation	25.4 mm (1.0 in)	46 of 100 (Notable)
Pinjarra	Australia	Record daily precipitation	57.0 mm (2.2 in)	45 of 100 (Notable)
Yushu	China	Record daily precipitation	25.3 mm (1.0 in)	45 of 100 (Notable)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	42.8 C (109.0 F)	45 of 100 (Notable)
Waverly	United States	Record high minimum temperature	18.3 C (64.9 F)	45 of 100 (Notable)
Dalveen	Australia	Record daily precipitation	33.4 mm (1.3 in)	44 of 100 (Notable)
Cutzamala de Pinzon	Mexico	Record daily precipitation	88.9 mm (3.5 in)	44 of 100 (Notable)
Lisboa Geofisica	Portugal	Record daily precipitation	43.2 mm (1.7 in)	44 of 100 (Notable)
Westcliffe	United States	Record high minimum temperature	11.7 C (53.1 F)	44 of 100 (Notable)
Potosi 4 SW	United States	Record high minimum temperature	21.7 C (71.1 F)	44 of 100 (Notable)
Cooperstown	United States	Record high minimum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Ellendale	United States	Record low maximum temperature	10.0 C (50.0 F)	44 of 100 (Notable)
Makaweli 965	United States	Record low maximum temperature	26.7 C (80.1 F)	44 of 100 (Notable)
Paw Paw 2S	United States	Record daily precipitation	53.8 mm (2.1 in)	43 of 100 (Notable)
Logan 5 SW Exp Farm	United States	Record daily precipitation	30.7 mm (1.2 in)	43 of 100 (Notable)
Dubois	United States	Record low maximum temperature	2.8 C (37.0 F)	43 of 100 (Notable)
Eagle	United States	Record high maximum temperature	30.0 C (86.0 F)	43 of 100 (Notable)
Kilcoy Post Office	Australia	Record daily precipitation	41.0 mm (1.6 in)	42 of 100 (Notable)
West Haldon	Australia	Record daily precipitation	25.0 mm (1.0 in)	42 of 100 (Notable)
Carramar	Australia	Record daily precipitation	47.0 mm (1.9 in)	42 of 100 (Notable)
Nagano	Japan	Record daily precipitation	63.5 mm (2.5 in)	42 of 100 (Notable)
Saskylah	Russia	Record high minimum temperature	6.8 C (44.2 F)	42 of 100 (Notable)

Counts by Type and Timescale

1,914 records

Records set or tied on 30 May 2011 by type: Highest daily maximum 578, Lowest daily maximum 226, Highest daily minimum 549, Lowest daily minimum 97, Heaviest daily rainfall 422, Heaviest daily snowfall 26, Deepest snow cover 16.

Records on 30 May 2011 by type
Record type	Records
Highest daily maximum	578
Lowest daily maximum	226
Highest daily minimum	549
Lowest daily minimum	97
Heaviest daily rainfall	422
Heaviest daily snowfall	26
Deepest snow cover	16

Records on 30 May 2011 by timescale: all-time 6, monthly 129, daily 1,779.

How Much Records Were Beaten By

1,400 broken records

Margins by which the 1,400 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 661.0. Ties are not counted.

Top 20 by Significance

30 May 2011

Top 20 records on 30 May 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 2011	Keanae 346, US	daily rain	383.5 mm (15.1 in)	335.2 mm (13.2 in)	104 years	80 of 100 (Exceptional)
30 May 2011	Isseka, AU	daily rain	81.2 mm (3.2 in)	54.5 mm (2.1 in)	90 years	76 of 100 (Major)
30 May 2011	Lupi Upper 442, US	daily rain	337.8 mm (13.3 in)	233.4 mm (9.2 in)	64 years	68 of 100 (Major)
30 May 2011	Ely AP, US	daily snow depth	12.7 cm (5.0 in)	12.7 cm (5.0 in)	102 years	68 of 100 (Major)
30 May 2011	Owosso Wwtp, US	daily rain	37.1 mm (1.5 in)	24.1 mm (0.9 in)	102 years	64 of 100 (Major)
30 May 2011	Morgan, US	daily rain	45.0 mm (1.8 in)	18.8 mm (0.7 in)	73 years	61 of 100 (Major)
30 May 2011	Maizuru Reg Met HQ, JP	monthly rain	235.0 mm (9.3 in)	108.0 mm (4.3 in)	16 years	59 of 100 (Notable)
30 May 2011	Nabawa, AU	daily rain	64.0 mm (2.5 in)	41.0 mm (1.6 in)	29 years	58 of 100 (Notable)
30 May 2011	Cecil Plains Homestead, AU	daily rain	43.0 mm (1.7 in)	23.2 mm (0.9 in)	117 years	58 of 100 (Notable)
30 May 2011	Tsuruga, JP	daily rain	89.9 mm (3.5 in)	66.4 mm (2.6 in)	38 years	57 of 100 (Notable)
30 May 2011	Kyoto, JP	daily rain	85.6 mm (3.4 in)	58.9 mm (2.3 in)	54 years	57 of 100 (Notable)
30 May 2011	Three Springs, AU	daily rain	51.2 mm (2.0 in)	30.9 mm (1.2 in)	37 years	56 of 100 (Notable)
30 May 2011	Jondaryan Post Office, AU	daily rain	33.0 mm (1.3 in)	20.3 mm (0.8 in)	108 years	56 of 100 (Notable)
30 May 2011	Millmerran Post Office, AU	daily rain	35.0 mm (1.4 in)	20.8 mm (0.8 in)	104 years	55 of 100 (Notable)
30 May 2011	Matsuyama, JP	daily rain	64.0 mm (2.5 in)	46.0 mm (1.8 in)	60 years	55 of 100 (Notable)
30 May 2011	Fukui, JP	daily rain	96.0 mm (3.8 in)	55.0 mm (2.2 in)	32 years	54 of 100 (Notable)
30 May 2011	Sandsprings, AU	daily rain	55.0 mm (2.2 in)	17.7 mm (0.7 in)	90 years	53 of 100 (Notable)
30 May 2011	Sendai, JP	daily rain	114.6 mm (4.5 in)	79.1 mm (3.1 in)	24 years	53 of 100 (Notable)
30 May 2011	Great Falls 16St, US	daily rain	29.0 mm (1.1 in)	10.7 mm (0.4 in)	109 years	53 of 100 (Notable)
30 May 2011	Kurrowah, AU	daily rain	36.0 mm (1.4 in)	24.1 mm (0.9 in)	89 years	52 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 2011

Records set or tied on this calendar date in each year from 1818 to 2011. 2011 had 1,914 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 2011-05-30: 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 100	1,390
100 to 200	6
200 to 300	2
300 to 400	1
400 to 500	0
500 to 600	0
600 to 700	1