Weather Records on 11 May 2015

1,038 weather records were set or tied worldwide on 11 May 2015. Highest significance: Avon, US.

Key Facts for 11 May 2015

On 11 May 2015, 1,038 weather records were set or tied at long-record stations worldwide.
490 were record highs and 159 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 31 monthly and 1,006 daily.
Avon set a monthly record daily precipitation of 101.6 mm (4.0 in) on 11 May 2015.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 460 records.

Record Map

1,038 stations

1,038 station records on 11 May 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Avon	United States	Record daily precipitation	101.6 mm (4.0 in)	89 of 100 (Exceptional)
Portland	Australia	Record daily precipitation	72.0 mm (2.8 in)	87 of 100 (Exceptional)
Lovely Banks (Reservoir)	Australia	Record daily precipitation	39.4 mm (1.6 in)	78 of 100 (Major)
Ashley	United States	Record daily precipitation	62.7 mm (2.5 in)	75 of 100 (Major)
Ellendale	United States	Record daily precipitation	114.3 mm (4.5 in)	71 of 100 (Major)
Kalangadoo	Australia	Record daily precipitation	40.6 mm (1.6 in)	67 of 100 (Major)
Silver Lake Rs	United States	Record daily precipitation	72.1 mm (2.8 in)	66 of 100 (Major)
Marietta 5SW	United States	Record daily precipitation	130.6 mm (5.1 in)	65 of 100 (Major)
Selby	United States	Record daily precipitation	62.5 mm (2.5 in)	65 of 100 (Major)
Napoleon	United States	Record daily precipitation	37.6 mm (1.5 in)	63 of 100 (Major)
Gordon 6N	United States	Record snow depth	27.9 cm (11.0 in)	62 of 100 (Major)
Jasper	United States	Record daily precipitation	115.8 mm (4.6 in)	60 of 100 (Major)
Parks 6 ENE	United States	Record daily precipitation	123.4 mm (4.9 in)	60 of 100 (Major)
Morgan Mill	United States	Record daily precipitation	172.7 mm (6.8 in)	60 of 100 (Major)
Sand I Ryfylke II	Norway	Record daily precipitation	46.5 mm (1.8 in)	59 of 100 (Notable)
Wheaton	United States	Record daily precipitation	56.4 mm (2.2 in)	57 of 100 (Notable)
Victor 4 N	United States	Record daily precipitation	53.3 mm (2.1 in)	57 of 100 (Notable)
Decatur	United States	Record daily precipitation	100.6 mm (4.0 in)	55 of 100 (Notable)
Longview	United States	Record daily precipitation	114.3 mm (4.5 in)	55 of 100 (Notable)
Ft Robinson	United States	Record snow depth	40.6 cm (16.0 in)	54 of 100 (Notable)
Selby	United States	Record daily snowfall	14.5 cm (5.7 in)	54 of 100 (Notable)
Benxi	China	Record daily precipitation	48.3 mm (1.9 in)	53 of 100 (Notable)
Huntsville	United States	Record daily precipitation	132.1 mm (5.2 in)	53 of 100 (Notable)
Pine Ridge	United States	Record daily precipitation	139.7 mm (5.5 in)	52 of 100 (Notable)
Cottonwood 2 E	United States	Record snow depth	12.7 cm (5.0 in)	52 of 100 (Notable)
Botkinburg 3 NE	United States	Record daily precipitation	91.4 mm (3.6 in)	51 of 100 (Notable)
Springhill	United States	Record daily precipitation	76.2 mm (3.0 in)	51 of 100 (Notable)
Gettysburg	United States	Record daily snowfall	14.0 cm (5.5 in)	51 of 100 (Notable)
Suldalsvatn	Norway	Record daily precipitation	30.2 mm (1.2 in)	50 of 100 (Notable)
Steeleville	United States	Record daily precipitation	70.6 mm (2.8 in)	50 of 100 (Notable)
Minneota	United States	Record daily precipitation	61.0 mm (2.4 in)	50 of 100 (Notable)
Montevideo 1SW	United States	Record daily precipitation	50.8 mm (2.0 in)	50 of 100 (Notable)
Longwood	United States	Record daily precipitation	85.1 mm (3.4 in)	50 of 100 (Notable)
Onida 4 NW	United States	Record daily snowfall	5.1 cm (2.0 in)	50 of 100 (Notable)
Wilmington 7 N	United States	Record daily precipitation	110.5 mm (4.4 in)	49 of 100 (Notable)
Pollock	United States	Record daily precipitation	29.0 mm (1.1 in)	49 of 100 (Notable)
Blakely Mtn Dam	United States	Record daily precipitation	125.0 mm (4.9 in)	48 of 100 (Notable)
Chadron 3SW	United States	Record snow depth	30.5 cm (12.0 in)	48 of 100 (Notable)
Kinston 7 SE	United States	Record daily precipitation	121.9 mm (4.8 in)	48 of 100 (Notable)
Daisy 4 ENE	United States	Record daily precipitation	103.9 mm (4.1 in)	48 of 100 (Notable)
Lingle 2WSW	United States	Record daily snowfall	26.4 cm (10.4 in)	48 of 100 (Notable)
Stavanger - Valand	Norway	Record daily precipitation	26.6 mm (1.0 in)	47 of 100 (Notable)
Chester	United States	Record daily precipitation	87.6 mm (3.4 in)	47 of 100 (Notable)
Middleboro	United States	Record high minimum temperature	16.7 C (62.1 F)	47 of 100 (Notable)
Pascagoula 3 NE	United States	Record low minimum temperature	7.2 C (45.0 F)	47 of 100 (Notable)
Blue Hill Coop	United States	Record high minimum temperature	18.3 C (64.9 F)	46 of 100 (Notable)
Farmington	United States	Record daily precipitation	58.4 mm (2.3 in)	46 of 100 (Notable)
Alliance 1WNW	United States	Record daily snowfall	16.0 cm (6.3 in)	46 of 100 (Notable)
Sauda	Norway	Record daily precipitation	41.7 mm (1.6 in)	45 of 100 (Notable)
Hillsboro	United States	Record daily precipitation	114.8 mm (4.5 in)	45 of 100 (Notable)
Sinton	United States	Record daily precipitation	106.9 mm (4.2 in)	45 of 100 (Notable)
Foster (Post Office)	Australia	Record daily precipitation	41.0 mm (1.6 in)	44 of 100 (Notable)
Danville	United States	Record daily precipitation	140.0 mm (5.5 in)	44 of 100 (Notable)
Ozone	United States	Record daily precipitation	91.2 mm (3.6 in)	44 of 100 (Notable)
Mooringsport 1 N	United States	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Hague	United States	Record daily precipitation	34.8 mm (1.4 in)	44 of 100 (Notable)
Madill	United States	Record daily precipitation	122.9 mm (4.8 in)	44 of 100 (Notable)
Wister 3S	United States	Record daily precipitation	76.2 mm (3.0 in)	44 of 100 (Notable)
Gettysburg	United States	Record snow depth	15.2 cm (6.0 in)	44 of 100 (Notable)
Vardoe	Norway	Record high minimum temperature	6.0 C (42.8 F)	43 of 100 (Notable)

Counts by Type and Timescale

1,038 records

Records set or tied on 11 May 2015 by type: Highest daily maximum 184, Lowest daily maximum 111, Highest daily minimum 306, Lowest daily minimum 48, Heaviest daily rainfall 319, Heaviest daily snowfall 26, Deepest snow cover 44.

Records on 11 May 2015 by type
Record type	Records
Highest daily maximum	184
Lowest daily maximum	111
Highest daily minimum	306
Lowest daily minimum	48
Heaviest daily rainfall	319
Heaviest daily snowfall	26
Deepest snow cover	44

Records on 11 May 2015 by timescale: all-time 1, monthly 31, daily 1,006.

How Much Records Were Beaten By

835 broken records

Margins by which the 835 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 355.0. Ties are not counted.

Top 20 by Significance

11 May 2015

Top 20 records on 11 May 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 2015	Avon, US	monthly rain	101.6 mm (4.0 in)	45.7 mm (1.8 in)	98 years	89 of 100 (Exceptional)
11 May 2015	Portland, AU	monthly rain	72.0 mm (2.8 in)	21.7 mm (0.9 in)	115 years	87 of 100 (Exceptional)
11 May 2015	Lovely Banks (Reservoir), AU	daily rain	39.4 mm (1.6 in)	25.2 mm (1.0 in)	94 years	78 of 100 (Major)
11 May 2015	Ashley, US	daily rain	62.7 mm (2.5 in)	40.1 mm (1.6 in)	84 years	75 of 100 (Major)
11 May 2015	Ellendale, US	daily rain	114.3 mm (4.5 in)	95.0 mm (3.7 in)	72 years	71 of 100 (Major)
11 May 2015	Kalangadoo, AU	daily rain	40.6 mm (1.6 in)	19.0 mm (0.7 in)	86 years	67 of 100 (Major)
11 May 2015	Silver Lake Rs, US	all-time rain	72.1 mm (2.8 in)	26.4 mm (1.0 in)	9 years	66 of 100 (Major)
11 May 2015	Marietta 5SW, US	daily rain	130.6 mm (5.1 in)	88.9 mm (3.5 in)	60 years	65 of 100 (Major)
11 May 2015	Selby, US	daily rain	62.5 mm (2.5 in)	39.4 mm (1.6 in)	50 years	65 of 100 (Major)
11 May 2015	Napoleon, US	daily rain	37.6 mm (1.5 in)	20.3 mm (0.8 in)	100 years	63 of 100 (Major)
11 May 2015	Gordon 6N, US	daily snow depth	27.9 cm (11.0 in)	25.4 cm (10.0 in)	92 years	62 of 100 (Major)
11 May 2015	Jasper, US	daily rain	115.8 mm (4.6 in)	59.9 mm (2.4 in)	64 years	60 of 100 (Major)
11 May 2015	Parks 6 ENE, US	daily rain	123.4 mm (4.9 in)	89.1 mm (3.5 in)	49 years	60 of 100 (Major)
11 May 2015	Morgan Mill, US	daily rain	172.7 mm (6.8 in)	132.3 mm (5.2 in)	49 years	60 of 100 (Major)
11 May 2015	Sand I Ryfylke II, NO	daily rain	46.5 mm (1.8 in)	26.7 mm (1.1 in)	58 years	59 of 100 (Notable)
11 May 2015	Wheaton, US	daily rain	56.4 mm (2.2 in)	23.9 mm (0.9 in)	78 years	57 of 100 (Notable)
11 May 2015	Victor 4 N, US	daily rain	53.3 mm (2.1 in)	22.3 mm (0.9 in)	84 years	57 of 100 (Notable)
11 May 2015	Decatur, US	daily rain	100.6 mm (4.0 in)	53.4 mm (2.1 in)	60 years	55 of 100 (Notable)
11 May 2015	Longview, US	daily rain	114.3 mm (4.5 in)	39.4 mm (1.6 in)	84 years	55 of 100 (Notable)
11 May 2015	Ft Robinson, US	daily snow depth	40.6 cm (16.0 in)	35.5 cm (14.0 in)	32 years	54 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

1814 to 2015

Records set or tied on this calendar date in each year from 1814 to 2015. 2015 had 1,038 records.

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

Records on 05-11 in each year
Year	Records
1814	3
1832	1
1836	3
1837	1
1838	1
1848	2
1856	1
1860	2
1865	1
1867	1
1869	1
1872	1
1874	2
1879	2
1880	1
1881	5
1883	3
1884	2
1885	1
1886	2
1887	1
1888	1
1889	2
1892	1
1893	3
1894	2
1895	4
1896	3
1897	6
1898	5
1900	7
1901	9
1902	6
1903	7
1904	6
1905	12
1906	21
1907	44
1908	9
1909	12
1910	16
1911	99
1912	21
1913	20
1914	20
1915	16
1916	22
1917	40
1918	54
1919	56
1920	181
1921	58
1922	61
1923	111
1924	239
1925	410
1926	472
1927	318
1928	252
1929	126
1930	380
1931	254
1932	170
1933	429
1934	332
1935	276
1936	363
1937	170
1938	141
1939	213
1940	340
1941	411
1942	389
1943	646
1944	408
1945	483
1946	747
1947	480
1948	407
1949	451
1950	285
1951	395
1952	629
1953	686
1954	492
1955	235
1956	942
1957	439
1958	499
1959	575
1960	809
1961	663
1962	670
1963	984
1964	299
1965	356
1966	992
1967	974
1968	909
1969	349
1970	764
1971	565
1972	673
1973	429
1974	795
1975	383
1976	509
1977	836
1978	1,070
1979	1,239
1980	693
1981	1,298
1982	624
1983	930
1984	666
1985	835
1986	684
1987	1,247
1988	485
1989	952
1990	935
1991	990
1992	728
1993	1,088
1994	633
1995	1,244
1996	1,088
1997	1,033
1998	1,315
1999	1,052
2000	1,286
2001	848
2002	845
2003	1,321
2004	834
2005	944
2006	822
2007	833
2008	1,015
2009	605
2010	1,292
2011	1,414
2012	1,181
2013	615
2014	662
2015	1,038
2016	497
2017	546
2018	988
2019	915
2020	1,068
2021	590
2022	1,470
2023	390
2024	579
2025	1,104
2026	797

Download the Data

Data for records on 2015-05-11: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	779
50 to 100	37
100 to 150	11
150 to 200	4
200 to 250	0
250 to 300	2
300 to 350	1
350 to 400	1