Weather Records on 11 May 1951

395 weather records were set or tied worldwide on 11 May 1951. Highest significance: Lake Wenatchee, US.

Key Facts for 11 May 1951

On 11 May 1951, 395 weather records were set or tied at long-record stations worldwide.
33 were record highs and 82 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 384 daily.
Lake Wenatchee set a daily record precipitation of 39.4 mm (1.6 in) on 11 May 1951.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 464 records.

Record Map

395 stations

395 station records on 11 May 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lake Wenatchee	United States	Record daily precipitation	39.4 mm (1.6 in)	55 of 100 (Notable)
Skukuza	South Africa	Record daily precipitation	32.0 mm (1.3 in)	53 of 100 (Notable)
Port Townsend	United States	Record daily precipitation	32.8 mm (1.3 in)	52 of 100 (Notable)
Clearbrook	United States	Record daily precipitation	44.7 mm (1.8 in)	51 of 100 (Notable)
Anacortes	United States	Record daily precipitation	31.5 mm (1.2 in)	49 of 100 (Notable)
Coupeville 1 S	United States	Record daily precipitation	27.7 mm (1.1 in)	48 of 100 (Notable)
Lake Cle Elum	United States	Record daily precipitation	36.1 mm (1.4 in)	48 of 100 (Notable)
Lake Kachess	United States	Record daily precipitation	44.2 mm (1.7 in)	48 of 100 (Notable)
Sedro-Woolley	United States	Record daily precipitation	47.5 mm (1.9 in)	48 of 100 (Notable)
Le Claire	United States	Record daily precipitation	50.5 mm (2.0 in)	47 of 100 (Notable)
Herefoss	Norway	Record snow depth	24.0 cm (9.4 in)	45 of 100 (Notable)
Skagit Pwr Plt	United States	Record daily precipitation	37.1 mm (1.5 in)	45 of 100 (Notable)
Klein Australie (Bos)	South Africa	Record daily precipitation	38.6 mm (1.5 in)	44 of 100 (Notable)
Mokakchung	India	Record daily precipitation	133.4 mm (5.3 in)	43 of 100 (Notable)
Duiwelskloof (Mun)	South Africa	Record daily precipitation	28.7 mm (1.1 in)	43 of 100 (Notable)
Ravenshill	South Africa	Record daily precipitation	35.3 mm (1.4 in)	43 of 100 (Notable)
Bellingham 2 N	United States	Record daily precipitation	39.6 mm (1.6 in)	43 of 100 (Notable)
Snoqualmie Falls	United States	Record daily precipitation	44.2 mm (1.7 in)	43 of 100 (Notable)
Rimrock Tieton Dam	United States	Record daily precipitation	34.8 mm (1.4 in)	42 of 100 (Notable)
Everett	United States	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Marietta 3 NNW	United States	Record daily precipitation	39.4 mm (1.6 in)	41 of 100 (Notable)
Cle Elum	United States	Record daily precipitation	32.0 mm (1.3 in)	40 of 100 (Notable)
Wentworth (Avoca)	Australia	Record daily precipitation	30.7 mm (1.2 in)	39 of 100 (Notable)
Olga 2 SE	United States	Record daily precipitation	26.7 mm (1.1 in)	39 of 100 (Notable)
Tuddal	Norway	Record snow depth	43.0 cm (16.9 in)	37 of 100 (Notable)
Buckley 1 NE	United States	Record daily precipitation	34.5 mm (1.4 in)	36 of 100 (Notable)
Mochudi	Botswana	Record daily precipitation	28.7 mm (1.1 in)	35 of 100 (Notable)
Broederstroom (Bos)	South Africa	Record daily precipitation	44.7 mm (1.8 in)	35 of 100 (Notable)
Middlekop (Bos)	South Africa	Record daily precipitation	27.4 mm (1.1 in)	35 of 100 (Notable)
Cove 1 E	United States	Record daily precipitation	27.2 mm (1.1 in)	35 of 100 (Notable)
Aseral	Norway	Record snow depth	30.0 cm (11.8 in)	34 of 100 (Routine)
Oregon Wtr Wks	United States	Record daily precipitation	55.4 mm (2.2 in)	34 of 100 (Routine)
Concrete Ppl Fish STN	United States	Record daily precipitation	55.9 mm (2.2 in)	34 of 100 (Routine)
Philadelphia City	United States	Record daily precipitation	28.4 mm (1.1 in)	34 of 100 (Routine)
New Martinsville 4 NNE	United States	Record daily precipitation	43.7 mm (1.7 in)	33 of 100 (Routine)
Darrington Rs	United States	Record daily precipitation	51.8 mm (2.0 in)	31 of 100 (Routine)
Uniao Dos Palmares	Brazil	Record daily precipitation	64.0 mm (2.5 in)	30 of 100 (Routine)
Postmyr I Drangedal	Norway	Record snow depth	59.0 cm (23.2 in)	30 of 100 (Routine)
Hedal I Valdres	Norway	Record snow depth	60.0 cm (23.6 in)	30 of 100 (Routine)
Tiangua	Brazil	Record daily precipitation	47.0 mm (1.9 in)	29 of 100 (Routine)
Regensburg	Germany	Record low maximum temperature	9.0 C (48.2 F)	29 of 100 (Routine)
Tshakhuma	South Africa	Record daily precipitation	38.1 mm (1.5 in)	29 of 100 (Routine)
Adrian 2 NNE	United States	Record low maximum temperature	7.2 C (45.0 F)	29 of 100 (Routine)
Rock Island 2 NW	United States	Record daily precipitation	31.5 mm (1.2 in)	29 of 100 (Routine)
Bumping Lake	United States	Record daily precipitation	41.7 mm (1.6 in)	29 of 100 (Routine)
Lake Keechelus	United States	Record daily precipitation	39.1 mm (1.5 in)	29 of 100 (Routine)
St George	Canada	Record daily precipitation	25.7 mm (1.0 in)	28 of 100 (Routine)
Sterkfontein	South Africa	Record daily precipitation	30.0 mm (1.2 in)	28 of 100 (Routine)
Simferopol	Ukraine	Record high minimum temperature	16.5 C (61.7 F)	28 of 100 (Routine)
Blaine	United States	Record daily precipitation	37.8 mm (1.5 in)	28 of 100 (Routine)
Quincy Exp STN	United States	Record daily precipitation	54.4 mm (2.1 in)	27 of 100 (Routine)
Cadiz	United States	Record daily precipitation	31.5 mm (1.2 in)	27 of 100 (Routine)
Wooster 2 SE	United States	Record daily precipitation	28.7 mm (1.1 in)	27 of 100 (Routine)
Long Branch-Oakhurst	United States	Record daily precipitation	25.7 mm (1.0 in)	26 of 100 (Routine)
Trenton	United States	Record daily precipitation	29.7 mm (1.2 in)	26 of 100 (Routine)
Gunnedah Pool	Australia	Record low minimum temperature	-1.1 C (30.0 F)	25 of 100 (Routine)
Sao Bento Do Una	Brazil	Record daily precipitation	30.7 mm (1.2 in)	25 of 100 (Routine)
Joao Pessoa	Brazil	Record daily precipitation	58.2 mm (2.3 in)	25 of 100 (Routine)
Rochester	United States	Record low maximum temperature	8.9 C (48.0 F)	25 of 100 (Routine)
Chippewa Lake	United States	Record daily precipitation	47.5 mm (1.9 in)	25 of 100 (Routine)

Counts by Type and Timescale

395 records

Records set or tied on 11 May 1951 by type: Highest daily maximum 11, Lowest daily maximum 58, Highest daily minimum 22, Lowest daily minimum 24, Heaviest daily rainfall 275, Deepest snow cover 5.

Records on 11 May 1951 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	58
Highest daily minimum	22
Lowest daily minimum	24
Heaviest daily rainfall	275
Heaviest daily snowfall	0
Deepest snow cover	5

Records on 11 May 1951 by timescale: all-time 0, monthly 11, daily 384.

How Much Records Were Beaten By

355 broken records

Margins by which the 355 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 350.0. Ties are not counted.

Top 20 by Significance

11 May 1951

Top 20 records on 11 May 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1951	Lake Wenatchee, US	daily rain	39.4 mm (1.6 in)	32.3 mm (1.3 in)	33 years	55 of 100 (Notable)
11 May 1951	Skukuza, ZA	daily rain	32.0 mm (1.3 in)	32.0 mm (1.3 in)	37 years	53 of 100 (Notable)
11 May 1951	Port Townsend, US	daily rain	32.8 mm (1.3 in)	19.6 mm (0.8 in)	37 years	52 of 100 (Notable)
11 May 1951	Clearbrook, US	daily rain	44.7 mm (1.8 in)	27.4 mm (1.1 in)	44 years	51 of 100 (Notable)
11 May 1951	Anacortes, US	daily rain	31.5 mm (1.2 in)	17.8 mm (0.7 in)	44 years	49 of 100 (Notable)
11 May 1951	Coupeville 1 S, US	daily rain	27.7 mm (1.1 in)	17.0 mm (0.7 in)	44 years	48 of 100 (Notable)
11 May 1951	Lake Cle Elum, US	daily rain	36.1 mm (1.4 in)	26.2 mm (1.0 in)	13 years	48 of 100 (Notable)
11 May 1951	Lake Kachess, US	daily rain	44.2 mm (1.7 in)	30.0 mm (1.2 in)	13 years	48 of 100 (Notable)
11 May 1951	Sedro-Woolley, US	daily rain	47.5 mm (1.9 in)	31.2 mm (1.2 in)	12 years	48 of 100 (Notable)
11 May 1951	Le Claire, US	daily rain	50.5 mm (2.0 in)	29.9 mm (1.2 in)	36 years	47 of 100 (Notable)
11 May 1951	Herefoss, NO	daily snow depth	24.0 cm (9.4 in)	24.0 cm (9.4 in)	54 years	45 of 100 (Notable)
11 May 1951	Skagit Pwr Plt, US	daily rain	37.1 mm (1.5 in)	19.3 mm (0.8 in)	40 years	45 of 100 (Notable)
11 May 1951	Klein Australie (Bos), ZA	daily rain	38.6 mm (1.5 in)	38.6 mm (1.5 in)	46 years	44 of 100 (Notable)
11 May 1951	Mokakchung, IN	daily rain	133.4 mm (5.3 in)	41.2 mm (1.6 in)	44 years	43 of 100 (Notable)
11 May 1951	Duiwelskloof (Mun), ZA	daily rain	28.7 mm (1.1 in)	27.9 mm (1.1 in)	40 years	43 of 100 (Notable)
11 May 1951	Ravenshill, ZA	daily rain	35.3 mm (1.4 in)	33.0 mm (1.3 in)	40 years	43 of 100 (Notable)
11 May 1951	Bellingham 2 N, US	monthly rain	39.6 mm (1.6 in)	13.9 mm (0.5 in)	5 years	43 of 100 (Notable)
11 May 1951	Snoqualmie Falls, US	daily rain	44.2 mm (1.7 in)	16.3 mm (0.6 in)	51 years	43 of 100 (Notable)
11 May 1951	Rimrock Tieton Dam, US	monthly rain	34.8 mm (1.4 in)	10.9 mm (0.4 in)	11 years	42 of 100 (Notable)
11 May 1951	Everett, US	daily rain	29.0 mm (1.1 in)	20.9 mm (0.8 in)	12 years	41 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 1951

Records set or tied on this calendar date in each year from 1814 to 1951. 1951 had 395 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 1951-05-11: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 50	350
50 to 100	0
100 to 150	0
150 to 200	1
200 to 250	1
250 to 300	2
300 to 350	1