Weather Records on 11 May 1991

990 weather records were set or tied worldwide on 11 May 1991. Highest significance: Munchen-Nymphenburg, DE.

Key Facts for 11 May 1991

On 11 May 1991, 990 weather records were set or tied at long-record stations worldwide.
610 were record highs and 157 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 10 monthly and 977 daily.
Munchen-Nymphenburg set a daily record precipitation of 66.9 mm (2.6 in) on 11 May 1991.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 460 records.

Record Map

990 stations

990 station records on 11 May 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Munchen-Nymphenburg	Germany	Record daily precipitation	66.9 mm (2.6 in)	70 of 100 (Major)
Waynesboro	United States	Record daily precipitation	79.2 mm (3.1 in)	65 of 100 (Major)
Dunmor	United States	Record daily precipitation	88.9 mm (3.5 in)	59 of 100 (Notable)
Sigmarszell-Zeisertsweiler	Germany	Record daily precipitation	85.0 mm (3.3 in)	57 of 100 (Notable)
Weihenstephan-Durnast	Germany	Record daily precipitation	41.9 mm (1.6 in)	56 of 100 (Notable)
Oelrichs	United States	Record daily precipitation	109.5 mm (4.3 in)	56 of 100 (Notable)
Konstanz	Germany	Record daily precipitation	43.8 mm (1.7 in)	55 of 100 (Notable)
Boos	Germany	Record daily precipitation	77.7 mm (3.1 in)	55 of 100 (Notable)
Hohenpeissenberg	Germany	Record daily precipitation	48.2 mm (1.9 in)	54 of 100 (Notable)
Rothenburg Ob der Tauber	Germany	Record daily precipitation	26.9 mm (1.1 in)	54 of 100 (Notable)
Manbulloo	Australia	Record daily precipitation	26.0 mm (1.0 in)	53 of 100 (Notable)
Attenkam	Germany	Record daily precipitation	51.4 mm (2.0 in)	53 of 100 (Notable)
Augsburg (Sankt Stephan)	Germany	Record daily precipitation	47.3 mm (1.9 in)	52 of 100 (Notable)
Zuerich/Fluntern	Switzerland	Record daily precipitation	48.2 mm (1.9 in)	51 of 100 (Notable)
Warthausen-Birkenhard	Germany	Record daily precipitation	53.8 mm (2.1 in)	50 of 100 (Notable)
Black Rock	United States	Record daily snowfall	7.6 cm (3.0 in)	50 of 100 (Notable)
Wasserburg	Germany	Record daily precipitation	47.1 mm (1.9 in)	49 of 100 (Notable)
Altomunster-Maisbrunn	Germany	Record daily precipitation	42.3 mm (1.7 in)	48 of 100 (Notable)
Kr. Ravensburg Weingarten	Germany	Record daily precipitation	52.2 mm (2.1 in)	48 of 100 (Notable)
Dillingen/Donau-Fristingen	Germany	Record daily precipitation	37.5 mm (1.5 in)	48 of 100 (Notable)
Leakesville 6 WSW	United States	Record daily precipitation	71.9 mm (2.8 in)	48 of 100 (Notable)
Stotten	Germany	Record daily precipitation	47.6 mm (1.9 in)	47 of 100 (Notable)
Lenningen-Schopfloch	Germany	Record daily precipitation	70.3 mm (2.8 in)	47 of 100 (Notable)
Oy-Mittelberg	Germany	Record daily precipitation	72.6 mm (2.9 in)	47 of 100 (Notable)
Merrill	United States	Record daily precipitation	81.3 mm (3.2 in)	46 of 100 (Notable)
Ft Logan 4 ESE	United States	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Kaisheim-Neuhof	Germany	Record daily precipitation	39.2 mm (1.5 in)	44 of 100 (Notable)
Munchen-Riem	Germany	Record daily precipitation	43.1 mm (1.7 in)	43 of 100 (Notable)
Marquette	United States	Record high minimum temperature	11.7 C (53.1 F)	43 of 100 (Notable)
Ignacio Lopez Rayon	Mexico	Record low minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Oksningoy	Norway	Record daily precipitation	30.3 mm (1.2 in)	42 of 100 (Notable)
Ashley	United States	Record high minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Academy 2NE	United States	Record high minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Two Harbors	United States	Record high minimum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Portales	United States	Record high minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Dupree	United States	Record daily precipitation	43.7 mm (1.7 in)	41 of 100 (Notable)
Dillingen/Donau	Germany	Record daily precipitation	38.5 mm (1.5 in)	40 of 100 (Notable)
Klippeneck	Germany	Record daily precipitation	31.7 mm (1.2 in)	40 of 100 (Notable)
Saentis	Switzerland	Record daily precipitation	91.1 mm (3.6 in)	40 of 100 (Notable)
Napoleon	United States	Record high minimum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Washburn	United States	Record high minimum temperature	16.1 C (61.0 F)	40 of 100 (Notable)
Ebersberg-Halbing	Germany	Record daily precipitation	34.9 mm (1.4 in)	39 of 100 (Notable)
Memmingen	Germany	Record daily precipitation	93.6 mm (3.7 in)	39 of 100 (Notable)
Santa Cruz	United States	Record low maximum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Steele 4N	United States	Record high minimum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Ulm	Germany	Record daily precipitation	29.1 mm (1.1 in)	38 of 100 (Notable)
Telluride 4WNW	United States	Record high minimum temperature	5.6 C (42.1 F)	38 of 100 (Notable)
Fergus Falls	United States	Record high minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Moab	United States	Record high minimum temperature	21.1 C (70.0 F)	38 of 100 (Notable)
Summit	United States	Record daily snowfall	14.0 cm (5.5 in)	38 of 100 (Notable)
Marlinton	United States	Record high minimum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Chilton	United States	Record high maximum temperature	29.4 C (84.9 F)	37 of 100 (Notable)
Aleksandrov Gaj	Russia	Record daily precipitation	25.1 mm (1.0 in)	36 of 100 (Notable)
Glen Eland	South Africa	Record daily precipitation	49.0 mm (1.9 in)	36 of 100 (Notable)
Hallock	United States	Record high minimum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Bridgeport	United States	Record high minimum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
Grafton	United States	Record high minimum temperature	18.3 C (64.9 F)	36 of 100 (Notable)
Kempten	Germany	Record daily precipitation	60.2 mm (2.4 in)	35 of 100 (Notable)
Neustadt/Aisch	Germany	Record daily precipitation	28.1 mm (1.1 in)	35 of 100 (Notable)
Neustadt Am Kulm-Filchendorf	Germany	Record daily precipitation	25.0 mm (1.0 in)	35 of 100 (Notable)

Counts by Type and Timescale

990 records

Records set or tied on 11 May 1991 by type: Highest daily maximum 157, Lowest daily maximum 61, Highest daily minimum 453, Lowest daily minimum 96, Heaviest daily rainfall 220, Heaviest daily snowfall 3.

Records on 11 May 1991 by type
Record type	Records
Highest daily maximum	157
Lowest daily maximum	61
Highest daily minimum	453
Lowest daily minimum	96
Heaviest daily rainfall	220
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 11 May 1991 by timescale: all-time 3, monthly 10, daily 977.

How Much Records Were Beaten By

754 broken records

Margins by which the 754 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 115.0. Ties are not counted.

Top 20 by Significance

11 May 1991

Top 20 records on 11 May 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1991	Munchen-Nymphenburg, DE	daily rain	66.9 mm (2.6 in)	45.1 mm (1.8 in)	68 years	70 of 100 (Major)
11 May 1991	Waynesboro, US	daily rain	79.2 mm (3.1 in)	44.9 mm (1.8 in)	78 years	65 of 100 (Major)
11 May 1991	Dunmor, US	daily rain	88.9 mm (3.5 in)	68.3 mm (2.7 in)	48 years	59 of 100 (Notable)
11 May 1991	Sigmarszell-Zeisertsweiler, DE	daily rain	85.0 mm (3.3 in)	50.0 mm (2.0 in)	38 years	57 of 100 (Notable)
11 May 1991	Weihenstephan-Durnast, DE	daily rain	41.9 mm (1.6 in)	28.4 mm (1.1 in)	41 years	56 of 100 (Notable)
11 May 1991	Oelrichs, US	daily rain	109.5 mm (4.3 in)	33.3 mm (1.3 in)	70 years	56 of 100 (Notable)
11 May 1991	Konstanz, DE	daily rain	43.8 mm (1.7 in)	28.5 mm (1.1 in)	36 years	55 of 100 (Notable)
11 May 1991	Boos, DE	daily rain	77.7 mm (3.1 in)	48.1 mm (1.9 in)	38 years	55 of 100 (Notable)
11 May 1991	Hohenpeissenberg, DE	daily rain	48.2 mm (1.9 in)	20.8 mm (0.8 in)	65 years	54 of 100 (Notable)
11 May 1991	Rothenburg Ob der Tauber, DE	daily rain	26.9 mm (1.1 in)	11.7 mm (0.5 in)	80 years	54 of 100 (Notable)
11 May 1991	Manbulloo, AU	daily rain	26.0 mm (1.0 in)	26.0 mm (1.0 in)	69 years	53 of 100 (Notable)
11 May 1991	Attenkam, DE	daily rain	51.4 mm (2.0 in)	33.6 mm (1.3 in)	38 years	53 of 100 (Notable)
11 May 1991	Augsburg (Sankt Stephan), DE	daily rain	47.3 mm (1.9 in)	22.9 mm (0.9 in)	38 years	52 of 100 (Notable)
11 May 1991	Zuerich/Fluntern, CH	daily rain	48.2 mm (1.9 in)	24.3 mm (1.0 in)	38 years	51 of 100 (Notable)
11 May 1991	Warthausen-Birkenhard, DE	daily rain	53.8 mm (2.1 in)	36.5 mm (1.4 in)	0 years	50 of 100 (Notable)
11 May 1991	Black Rock, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	89 years	50 of 100 (Notable)
11 May 1991	Wasserburg, DE	daily rain	47.1 mm (1.9 in)	31.0 mm (1.2 in)	29 years	49 of 100 (Notable)
11 May 1991	Altomunster-Maisbrunn, DE	daily rain	42.3 mm (1.7 in)	30.2 mm (1.2 in)	16 years	48 of 100 (Notable)
11 May 1991	Kr. Ravensburg Weingarten, DE	daily rain	52.2 mm (2.1 in)	29.7 mm (1.2 in)	20 years	48 of 100 (Notable)
11 May 1991	Dillingen/Donau-Fristingen, DE	daily rain	37.5 mm (1.5 in)	21.1 mm (0.8 in)	38 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

1814 to 1991

Records set or tied on this calendar date in each year from 1814 to 1991. 1991 had 990 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 1991-05-11: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 20	711
20 to 40	33
40 to 60	7
60 to 80	2
80 to 100	0
100 to 120	1