Weather Records on 11 May 1945

483 weather records were set or tied worldwide on 11 May 1945. Highest significance: Cooperstown, US.

Key Facts for 11 May 1945

On 11 May 1945, 483 weather records were set or tied at long-record stations worldwide.
96 were record highs and 235 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 30 monthly and 453 daily.
Cooperstown set a monthly record daily snowfall of 25.4 cm (10.0 in) on 11 May 1945.
Across 156 earlier years (1814 to 2026) the same calendar date averaged 463 records.

Record Map

483 stations

483 station records on 11 May 1945 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 May 1945: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cooperstown	United States	Record daily snowfall	25.4 cm (10.0 in)	68 of 100 (Major)
Eastport	United States	Record daily precipitation	47.8 mm (1.9 in)	58 of 100 (Notable)
North Bridgton	United States	Record daily snowfall	30.5 cm (12.0 in)	58 of 100 (Notable)
Eustis 2 SSE	United States	Record daily snowfall	34.5 cm (13.6 in)	51 of 100 (Notable)
White River Junction	United States	Record daily precipitation	43.9 mm (1.7 in)	44 of 100 (Notable)
Milan	Italy	Record high minimum temperature	19.3 C (66.7 F)	43 of 100 (Notable)
Madison	United States	Record daily precipitation	58.2 mm (2.3 in)	43 of 100 (Notable)
Oxford	United Kingdom	Record high maximum temperature	27.2 C (81.0 F)	41 of 100 (Notable)
Fredericton Unb	Canada	Record daily snowfall	10.2 cm (4.0 in)	40 of 100 (Notable)
Woodstock	Canada	Record daily snowfall	8.9 cm (3.5 in)	40 of 100 (Notable)
Cooperstown	United States	Record daily precipitation	35.1 mm (1.4 in)	39 of 100 (Notable)
Simcoe	Canada	Record low maximum temperature	5.0 C (41.0 F)	38 of 100 (Notable)
Farmington	United States	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Rumford	United States	Record daily precipitation	60.7 mm (2.4 in)	38 of 100 (Notable)
Glencliff	United States	Record daily precipitation	35.6 mm (1.4 in)	38 of 100 (Notable)
North Bridgton	United States	Record daily precipitation	73.7 mm (2.9 in)	37 of 100 (Notable)
Albany	United States	Record daily precipitation	37.1 mm (1.5 in)	37 of 100 (Notable)
Lewiston	United States	Record daily precipitation	46.7 mm (1.8 in)	36 of 100 (Notable)
Chatham	Canada	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Uccle	Belgium	Record high minimum temperature	15.7 C (60.3 F)	34 of 100 (Routine)
Fredericton Cda	Canada	Record daily snowfall	11.4 cm (4.5 in)	34 of 100 (Routine)
De Ruyter 4 N	United States	Record daily precipitation	34.5 mm (1.4 in)	34 of 100 (Routine)
Esplanada	Brazil	Record daily precipitation	86.0 mm (3.4 in)	33 of 100 (Routine)
Lowell	United States	Record daily precipitation	45.2 mm (1.8 in)	33 of 100 (Routine)
Worcester	United States	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Moncton	Canada	Record daily precipitation	30.5 mm (1.2 in)	32 of 100 (Routine)
Mechanicville 2 S	United States	Record daily precipitation	34.8 mm (1.4 in)	32 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record high maximum temperature	30.5 C (86.9 F)	31 of 100 (Routine)
Saentis	Switzerland	Record high minimum temperature	6.5 C (43.7 F)	31 of 100 (Routine)
Waterville Wwtp	United States	Record daily precipitation	45.7 mm (1.8 in)	31 of 100 (Routine)
Alfred	United States	Record daily snowfall	20.6 cm (8.1 in)	31 of 100 (Routine)
Corning	United States	Record daily precipitation	32.3 mm (1.3 in)	31 of 100 (Routine)
Point Escuminac	Canada	Record daily precipitation	41.1 mm (1.6 in)	30 of 100 (Routine)
Sterling	United States	Record daily precipitation	40.6 mm (1.6 in)	30 of 100 (Routine)
Bainbridge 2 E	United States	Record daily precipitation	32.8 mm (1.3 in)	30 of 100 (Routine)
Dannemora	United States	Record daily snowfall	7.6 cm (3.0 in)	30 of 100 (Routine)
Newport	United States	Record low maximum temperature	17.2 C (63.0 F)	29 of 100 (Routine)
Boonton 1 SE	United States	Record daily precipitation	33.0 mm (1.3 in)	29 of 100 (Routine)
Sabinal	United States	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Gaspe	Canada	Record daily snowfall	10.2 cm (4.0 in)	28 of 100 (Routine)
Parrsboro	Canada	Record daily precipitation	31.5 mm (1.2 in)	28 of 100 (Routine)
Potsdam	Germany	Record high minimum temperature	15.7 C (60.3 F)	28 of 100 (Routine)
Uman	Ukraine	Record low minimum temperature	-2.4 C (27.7 F)	28 of 100 (Routine)
Boylston	United States	Record daily precipitation	41.1 mm (1.6 in)	28 of 100 (Routine)
Concord	United States	Record daily precipitation	36.3 mm (1.4 in)	28 of 100 (Routine)
Brenham	United States	Record daily precipitation	67.3 mm (2.6 in)	28 of 100 (Routine)
Northfield	United States	Record daily snowfall	8.9 cm (3.5 in)	28 of 100 (Routine)
Abbeville	United States	Record daily precipitation	84.3 mm (3.3 in)	27 of 100 (Routine)
Gardiner	United States	Record daily precipitation	41.7 mm (1.6 in)	27 of 100 (Routine)
Princeton	United States	Record daily precipitation	38.6 mm (1.5 in)	27 of 100 (Routine)
Cortland	United States	Record daily precipitation	29.5 mm (1.2 in)	27 of 100 (Routine)
Liafoss	Norway	Record daily precipitation	32.6 mm (1.3 in)	26 of 100 (Routine)
Harkerville (Bos)	South Africa	Record daily precipitation	26.4 mm (1.0 in)	26 of 100 (Routine)
Henichesk	Ukraine	Record low minimum temperature	1.8 C (35.2 F)	26 of 100 (Routine)
Bee Branch	United States	Record low maximum temperature	15.6 C (60.1 F)	26 of 100 (Routine)
Saint Johnsbury	United States	Record daily snowfall	7.6 cm (3.0 in)	26 of 100 (Routine)
Dublin Phoenix Park	Ireland	Record high maximum temperature	22.8 C (73.0 F)	25 of 100 (Routine)
Saentis	Switzerland	Record high maximum temperature	12.0 C (53.6 F)	25 of 100 (Routine)
Conway	United States	Record low maximum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Greencastle 1 W	United States	Record low minimum temperature	0.6 C (33.1 F)	25 of 100 (Routine)

Counts by Type and Timescale

483 records

Records set or tied on 11 May 1945 by type: Highest daily maximum 47, Lowest daily maximum 100, Highest daily minimum 49, Lowest daily minimum 135, Heaviest daily rainfall 130, Heaviest daily snowfall 22.

Records on 11 May 1945 by type
Record type	Records
Highest daily maximum	47
Lowest daily maximum	100
Highest daily minimum	49
Lowest daily minimum	135
Heaviest daily rainfall	130
Heaviest daily snowfall	22
Deepest snow cover	0

Records on 11 May 1945 by timescale: all-time 0, monthly 30, daily 453.

How Much Records Were Beaten By

405 broken records

Margins by which the 405 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 229.0. Ties are not counted.

Top 20 by Significance

11 May 1945

Top 20 records on 11 May 1945 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 May 1945	Cooperstown, US	monthly snowfall	25.4 cm (10.0 in)	22.9 cm (9.0 in)	45 years	68 of 100 (Major)
11 May 1945	Eastport, US	daily rain	47.8 mm (1.9 in)	28.7 mm (1.1 in)	44 years	58 of 100 (Notable)
11 May 1945	North Bridgton, US	monthly snowfall	30.5 cm (12.0 in)	17.8 cm (7.0 in)	28 years	58 of 100 (Notable)
11 May 1945	Eustis 2 SSE, US	monthly snowfall	34.5 cm (13.6 in)	15.4 cm (6.1 in)	28 years	51 of 100 (Notable)
11 May 1945	White River Junction, US	daily rain	43.9 mm (1.7 in)	31.2 mm (1.2 in)	0 years	44 of 100 (Notable)
11 May 1945	Milan, IT	daily high min	19.3 C (66.7 F)	1.2 C (2.2 F)	165 years	43 of 100 (Notable)
11 May 1945	Madison, US	daily rain	58.2 mm (2.3 in)	30.3 mm (1.2 in)	40 years	43 of 100 (Notable)
11 May 1945	Oxford, GB	daily high max	27.2 C (81.0 F)	1.1 C (2.0 F)	96 years	41 of 100 (Notable)
11 May 1945	Fredericton Unb, CA	monthly snowfall	10.2 cm (4.0 in)	2.6 cm (1.0 in)	60 years	40 of 100 (Notable)
11 May 1945	Woodstock, CA	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	57 years	40 of 100 (Notable)
11 May 1945	Cooperstown, US	daily rain	35.1 mm (1.4 in)	17.8 mm (0.7 in)	44 years	39 of 100 (Notable)
11 May 1945	Simcoe, CA	monthly low max	5.0 C (41.0 F)	0.6 C (1.1 F)	66 years	38 of 100 (Notable)
11 May 1945	Farmington, US	daily rain	61.0 mm (2.4 in)	31.3 mm (1.2 in)	7 years	38 of 100 (Notable)
11 May 1945	Rumford, US	daily rain	60.7 mm (2.4 in)	20.6 mm (0.8 in)	44 years	38 of 100 (Notable)
11 May 1945	Glencliff, US	daily rain	35.6 mm (1.4 in)	23.2 mm (0.9 in)	19 years	38 of 100 (Notable)
11 May 1945	North Bridgton, US	daily rain	73.7 mm (2.9 in)	22.9 mm (0.9 in)	44 years	37 of 100 (Notable)
11 May 1945	Albany, US	daily rain	37.1 mm (1.5 in)	20.8 mm (0.8 in)	26 years	37 of 100 (Notable)
11 May 1945	Lewiston, US	daily rain	46.7 mm (1.8 in)	21.3 mm (0.8 in)	44 years	36 of 100 (Notable)
11 May 1945	Chatham, CA	daily rain	31.8 mm (1.3 in)	6.9 mm (0.27 in)	63 years	35 of 100 (Notable)
11 May 1945	Uccle, BE	daily high min	15.7 C (60.3 F)	0.6 C (1.1 F)	77 years	34 of 100 (Routine)

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 1945

Records set or tied on this calendar date in each year from 1814 to 1945. 1945 had 483 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 1945-05-11: 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	397
50 to 100	4
100 to 150	1
150 to 200	2
200 to 250	1