Weather Records on 11 May 1971

565 weather records were set or tied worldwide on 11 May 1971. Highest significance: New Iberia AP - Acadiana Rgnl, US.

Key Facts for 11 May 1971

On 11 May 1971, 565 weather records were set or tied at long-record stations worldwide.
197 were record highs and 49 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 556 daily.
New Iberia AP - Acadiana Rgnl set a daily record precipitation of 106.4 mm (4.2 in) on 11 May 1971.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 463 records.

Record Map

565 stations

565 station records on 11 May 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
New Iberia AP - Acadiana Rgnl	United States	Record daily precipitation	106.4 mm (4.2 in)	61 of 100 (Major)
Kapskarmo	Norway	Record daily precipitation	41.7 mm (1.6 in)	58 of 100 (Notable)
Beiarn	Norway	Record daily precipitation	30.3 mm (1.2 in)	55 of 100 (Notable)
Tierra Blanca (Smn)	Mexico	Record daily precipitation	134.9 mm (5.3 in)	54 of 100 (Notable)
Glomfjord	Norway	Record daily precipitation	50.2 mm (2.0 in)	52 of 100 (Notable)
Luroy	Norway	Record daily precipitation	90.0 mm (3.5 in)	52 of 100 (Notable)
David City 4E	United States	Record daily precipitation	79.5 mm (3.1 in)	52 of 100 (Notable)
Drevja	Norway	Record daily precipitation	45.6 mm (1.8 in)	50 of 100 (Notable)
Olho Dagua	Brazil	Record daily precipitation	66.7 mm (2.6 in)	49 of 100 (Notable)
Santo Antonio	Brazil	Record daily precipitation	57.3 mm (2.3 in)	49 of 100 (Notable)
Harlan Co Lake	United States	Record daily precipitation	63.2 mm (2.5 in)	47 of 100 (Notable)
Hlobane	South Africa	Record daily precipitation	49.0 mm (1.9 in)	46 of 100 (Notable)
Doorawarrah	Australia	Record daily precipitation	33.0 mm (1.3 in)	45 of 100 (Notable)
Eudamullah	Australia	Record daily precipitation	46.7 mm (1.8 in)	45 of 100 (Notable)
Boolardy	Australia	Record daily precipitation	30.0 mm (1.2 in)	44 of 100 (Notable)
Cape Hermes	South Africa	Record daily precipitation	89.0 mm (3.5 in)	44 of 100 (Notable)
Harkerville (Bos)	South Africa	Record daily precipitation	72.0 mm (2.8 in)	43 of 100 (Notable)
Ravenna	United States	Record daily precipitation	41.1 mm (1.6 in)	43 of 100 (Notable)
Goedgeloof	South Africa	Record daily precipitation	66.0 mm (2.6 in)	42 of 100 (Notable)
Centreville	United States	Record daily precipitation	63.5 mm (2.5 in)	41 of 100 (Notable)
Vleiplaas	South Africa	Record daily precipitation	34.0 mm (1.3 in)	39 of 100 (Notable)
Setlagodi (Pol)	South Africa	Record daily precipitation	35.0 mm (1.4 in)	39 of 100 (Notable)
Ashland #2	United States	Record daily precipitation	71.9 mm (2.8 in)	38 of 100 (Notable)
Pointe Au Pere	Canada	Record high maximum temperature	21.1 C (70.0 F)	37 of 100 (Notable)
Sitka Magnetic Obsy	United States	Record daily precipitation	35.6 mm (1.4 in)	37 of 100 (Notable)
Dunderlandsdalen	Norway	Record daily precipitation	35.8 mm (1.4 in)	36 of 100 (Notable)
Uppsala_Aut	Sweden	Record high minimum temperature	11.6 C (52.9 F)	36 of 100 (Notable)
Stockholm	Sweden	Record high minimum temperature	12.0 C (53.6 F)	36 of 100 (Notable)
Lincoln College View	United States	Record daily precipitation	47.2 mm (1.9 in)	36 of 100 (Notable)
Krakmo	Norway	Record daily precipitation	30.1 mm (1.2 in)	35 of 100 (Notable)
Lusikisiki (Tnk)	South Africa	Record daily precipitation	55.0 mm (2.2 in)	35 of 100 (Notable)
Holdrege	United States	Record daily precipitation	46.7 mm (1.8 in)	35 of 100 (Notable)
Orleans 2 W	United States	Record daily precipitation	53.3 mm (2.1 in)	35 of 100 (Notable)
Grindstone Island	Canada	Record high minimum temperature	5.6 C (42.1 F)	34 of 100 (Routine)
Belleville	United States	Record daily precipitation	45.0 mm (1.8 in)	34 of 100 (Routine)
Clearwater	United States	Record high maximum temperature	30.6 C (87.1 F)	34 of 100 (Routine)
Cwebe	South Africa	Record daily precipitation	86.0 mm (3.4 in)	33 of 100 (Routine)
Notinsila (Bos)	South Africa	Record daily precipitation	56.0 mm (2.2 in)	33 of 100 (Routine)
Paola	United States	Record daily precipitation	62.2 mm (2.4 in)	33 of 100 (Routine)
Carrajung Post Office	Australia	Record daily precipitation	40.4 mm (1.6 in)	32 of 100 (Routine)
Orebro	Sweden	Record high minimum temperature	11.5 C (52.7 F)	32 of 100 (Routine)
Mattoon	United States	Record daily precipitation	44.2 mm (1.7 in)	32 of 100 (Routine)
Natoma	United States	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Eldorado Springs	United States	Record daily precipitation	37.6 mm (1.5 in)	32 of 100 (Routine)
Wahoo	United States	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Lennoxville	Canada	Record high maximum temperature	26.1 C (79.0 F)	31 of 100 (Routine)
Wimbledon	South Africa	Record daily precipitation	28.0 mm (1.1 in)	31 of 100 (Routine)
Monroe Lock 4	United States	Record daily precipitation	73.7 mm (2.9 in)	31 of 100 (Routine)
Bar Harbor 3 NW	United States	Record high maximum temperature	27.2 C (81.0 F)	31 of 100 (Routine)
Warsaw 1	United States	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Manhattan	United States	Record daily precipitation	30.7 mm (1.2 in)	30 of 100 (Routine)
Sussex	Canada	Record high maximum temperature	24.4 C (75.9 F)	29 of 100 (Routine)
Zinder	Niger	Record high minimum temperature	30.0 C (86.0 F)	29 of 100 (Routine)
Nord-Rana	Norway	Record daily precipitation	55.9 mm (2.2 in)	29 of 100 (Routine)
Central City	United States	Record daily precipitation	35.6 mm (1.4 in)	29 of 100 (Routine)
Naponee	United States	Record daily precipitation	43.2 mm (1.7 in)	29 of 100 (Routine)
La Pocatiere Cda	Canada	Record high maximum temperature	25.0 C (77.0 F)	28 of 100 (Routine)
Mistassini Post	Canada	Record high maximum temperature	21.7 C (71.1 F)	28 of 100 (Routine)
Turgaj	Kazakhstan	Record low maximum temperature	11.3 C (52.3 F)	27 of 100 (Routine)
Flagstaff (Tnk)	South Africa	Record daily precipitation	31.0 mm (1.2 in)	27 of 100 (Routine)

Counts by Type and Timescale

565 records

Records set or tied on 11 May 1971 by type: Highest daily maximum 132, Lowest daily maximum 25, Highest daily minimum 65, Lowest daily minimum 24, Heaviest daily rainfall 314, Heaviest daily snowfall 3, Deepest snow cover 2.

Records on 11 May 1971 by type
Record type	Records
Highest daily maximum	132
Lowest daily maximum	25
Highest daily minimum	65
Lowest daily minimum	24
Heaviest daily rainfall	314
Heaviest daily snowfall	3
Deepest snow cover	2

Records on 11 May 1971 by timescale: all-time 0, monthly 9, daily 556.

How Much Records Were Beaten By

508 broken records

Margins by which the 508 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 71.0. Ties are not counted.

Top 20 by Significance

11 May 1971

Top 20 records on 11 May 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1971	New Iberia AP - Acadiana Rgnl, US	daily rain	106.4 mm (4.2 in)	68.3 mm (2.7 in)	68 years	61 of 100 (Major)
11 May 1971	Kapskarmo, NO	daily rain	41.7 mm (1.6 in)	22.3 mm (0.9 in)	36 years	58 of 100 (Notable)
11 May 1971	Beiarn, NO	daily rain	30.3 mm (1.2 in)	15.9 mm (0.6 in)	64 years	55 of 100 (Notable)
11 May 1971	Tierra Blanca (Smn), MX	monthly rain	134.9 mm (5.3 in)	49.0 mm (1.9 in)	23 years	54 of 100 (Notable)
11 May 1971	Glomfjord, NO	daily rain	50.2 mm (2.0 in)	36.8 mm (1.4 in)	25 years	52 of 100 (Notable)
11 May 1971	Luroy, NO	daily rain	90.0 mm (3.5 in)	58.2 mm (2.3 in)	25 years	52 of 100 (Notable)
11 May 1971	David City 4E, US	daily rain	79.5 mm (3.1 in)	32.3 mm (1.3 in)	68 years	52 of 100 (Notable)
11 May 1971	Drevja, NO	monthly rain	45.6 mm (1.8 in)	10.9 mm (0.4 in)	52 years	50 of 100 (Notable)
11 May 1971	Olho Dagua, BR	daily rain	66.7 mm (2.6 in)	51.5 mm (2.0 in)	29 years	49 of 100 (Notable)
11 May 1971	Santo Antonio, BR	daily rain	57.3 mm (2.3 in)	47.8 mm (1.9 in)	22 years	49 of 100 (Notable)
11 May 1971	Harlan Co Lake, US	daily rain	63.2 mm (2.5 in)	47.2 mm (1.9 in)	2 years	47 of 100 (Notable)
11 May 1971	Hlobane, ZA	daily rain	49.0 mm (1.9 in)	34.0 mm (1.3 in)	4 years	46 of 100 (Notable)
11 May 1971	Doorawarrah, AU	daily rain	33.0 mm (1.3 in)	30.5 mm (1.2 in)	60 years	45 of 100 (Notable)
11 May 1971	Eudamullah, AU	daily rain	46.7 mm (1.8 in)	43.9 mm (1.7 in)	41 years	45 of 100 (Notable)
11 May 1971	Boolardy, AU	daily rain	30.0 mm (1.2 in)	24.9 mm (1.0 in)	52 years	44 of 100 (Notable)
11 May 1971	Cape Hermes, ZA	daily rain	89.0 mm (3.5 in)	59.8 mm (2.4 in)	36 years	44 of 100 (Notable)
11 May 1971	Harkerville (Bos), ZA	daily rain	72.0 mm (2.8 in)	45.6 mm (1.8 in)	25 years	43 of 100 (Notable)
11 May 1971	Ravenna, US	daily rain	41.1 mm (1.6 in)	29.4 mm (1.2 in)	40 years	43 of 100 (Notable)
11 May 1971	Goedgeloof, ZA	daily rain	66.0 mm (2.6 in)	41.5 mm (1.6 in)	6 years	42 of 100 (Notable)
11 May 1971	Centreville, US	daily rain	63.5 mm (2.5 in)	36.3 mm (1.4 in)	44 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 1971

Records set or tied on this calendar date in each year from 1814 to 1971. 1971 had 565 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 1971-05-11: 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 10	411
10 to 20	53
20 to 30	18
30 to 40	11
40 to 50	8
50 to 60	5
60 to 70	1
70 to 80	1