Weather Records on 27 May 1940

138 weather records were set or tied worldwide on 27 May 1940. Highest significance: Ulan-Ude, RU.

Key Facts for 27 May 1940

On 27 May 1940, 138 weather records were set or tied at long-record stations worldwide.
22 were record highs and 64 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 134 daily.
Ulan-Ude set a monthly record daily precipitation of 27.0 mm (1.1 in) on 27 May 1940.
Across 164 earlier years (1797 to 2026) the same calendar date averaged 419 records.

Record Map

138 stations

138 station records on 27 May 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 May 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ulan-Ude	Russia	Record daily precipitation	27.0 mm (1.1 in)	37 of 100 (Notable)
Stornoway Airport	United Kingdom	Record high minimum temperature	11.7 C (53.1 F)	37 of 100 (Notable)
Parkers Landing	United States	Record daily precipitation	31.2 mm (1.2 in)	27 of 100 (Routine)
Waukesha Wwtp	United States	Record daily precipitation	47.2 mm (1.9 in)	27 of 100 (Routine)
Windsor Kings College	Canada	Record high maximum temperature	27.8 C (82.0 F)	24 of 100 (Routine)
Southern Pines 2 W	United States	Record daily precipitation	43.7 mm (1.7 in)	24 of 100 (Routine)
Dubois	United States	Record high minimum temperature	11.1 C (52.0 F)	24 of 100 (Routine)
Frederick	United States	Record daily precipitation	30.5 mm (1.2 in)	23 of 100 (Routine)
El Dorado Goodwin Fld	United States	Record low maximum temperature	20.6 C (69.1 F)	22 of 100 (Routine)
Fergana	Uzbekistan	Record high minimum temperature	20.2 C (68.4 F)	22 of 100 (Routine)
Stuttgart	United States	Record low maximum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
Lycippus 1 E	United States	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Fort Good Hope 2	Canada	Record daily precipitation	12.4 mm (0.5 in)	20 of 100 (Routine)
Carlisle	United States	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
South Pass City	United States	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Regensburg	Germany	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Chandur Bazar	India	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Kholapur	India	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Lindenberg	Germany	Record daily precipitation	12.0 mm (0.5 in)	20 of 100 (Routine)
Anklam	Germany	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Berlin-Dahlem	Germany	Record daily precipitation	15.8 mm (0.6 in)	20 of 100 (Routine)
Harpers Ferry River	United States	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Ulm	Germany	Record daily precipitation	25.9 mm (1.0 in)	20 of 100 (Routine)
Ellensburg	United States	Record low minimum temperature	1.1 C (34.0 F)	20 of 100 (Routine)
Rutherglen	Canada	Record high minimum temperature	15.0 C (59.0 F)	19 of 100 (Routine)
Kaliakheri	India	Record daily precipitation	7.1 mm (0.28 in)	19 of 100 (Routine)
Healdsburg	United States	Record low minimum temperature	3.3 C (37.9 F)	19 of 100 (Routine)
Mc Minnville	United States	Record low maximum temperature	19.4 C (66.9 F)	19 of 100 (Routine)
Mount Morgans	Australia	Record daily precipitation	10.2 mm (0.4 in)	18 of 100 (Routine)
Bancroft	Canada	Record daily precipitation	20.8 mm (0.8 in)	18 of 100 (Routine)
Moncton	Canada	Record high maximum temperature	30.6 C (87.1 F)	18 of 100 (Routine)
Bad Muskau	Germany	Record daily precipitation	10.9 mm (0.4 in)	18 of 100 (Routine)
Lovelock	United States	Record daily precipitation	0.8 mm (0.03 in)	18 of 100 (Routine)
Yarraloola	Australia	Record daily precipitation	2.3 mm (0.09 in)	17 of 100 (Routine)
Astoria	United States	Record low minimum temperature	2.8 C (37.0 F)	17 of 100 (Routine)
Romney 1 SW	United States	Record daily precipitation	17.0 mm (0.7 in)	17 of 100 (Routine)
Saint John	Canada	Record high maximum temperature	26.7 C (80.1 F)	16 of 100 (Routine)
Bordeaux-Merignac	France	Record daily precipitation	11.7 mm (0.5 in)	16 of 100 (Routine)
Sausar	India	Record daily precipitation	14.2 mm (0.6 in)	16 of 100 (Routine)
Raiford State Prison	United States	Record high minimum temperature	26.1 C (79.0 F)	16 of 100 (Routine)
Tarpon Spgs Sewage Plt	United States	Record low minimum temperature	14.4 C (57.9 F)	16 of 100 (Routine)
Salem	United States	Record low maximum temperature	15.0 C (59.0 F)	16 of 100 (Routine)
State Sanatorium	United States	Record daily precipitation	31.8 mm (1.3 in)	16 of 100 (Routine)
Wichita Mtn Wr	United States	Record daily precipitation	27.2 mm (1.1 in)	16 of 100 (Routine)
Confluence 1 NW	United States	Record daily precipitation	30.5 mm (1.2 in)	16 of 100 (Routine)
Greensburg 3 SE Unity	United States	Record daily precipitation	25.4 mm (1.0 in)	16 of 100 (Routine)
Gainesville	United States	Record daily precipitation	34.8 mm (1.4 in)	16 of 100 (Routine)
Riverton	United States	Record daily precipitation	27.4 mm (1.1 in)	16 of 100 (Routine)
Texarkana Webb Fld	United States	Record low maximum temperature	21.7 C (71.1 F)	16 of 100 (Routine)
Fort Good Hope 2	Canada	Record low maximum temperature	5.0 C (41.0 F)	15 of 100 (Routine)
Doberlug-Kirchhain	Germany	Record daily precipitation	30.0 mm (1.2 in)	15 of 100 (Routine)
Gondal	India	Record daily precipitation	0.8 mm (0.03 in)	15 of 100 (Routine)
Kirov	Russia	Record low minimum temperature	-2.3 C (27.9 F)	15 of 100 (Routine)
Niznij Novgorod	Russia	Record low minimum temperature	-1.4 C (29.5 F)	15 of 100 (Routine)
Poretskoye	Russia	Record low minimum temperature	-1.6 C (29.1 F)	15 of 100 (Routine)
Cave Run Lake	United States	Record low maximum temperature	18.3 C (64.9 F)	15 of 100 (Routine)
Rugby	United States	Record low maximum temperature	16.1 C (61.0 F)	15 of 100 (Routine)
Bijapur	India	Record daily precipitation	23.9 mm (0.9 in)	14 of 100 (Routine)
Syktyvkar	Russia	Record low minimum temperature	-4.6 C (23.7 F)	14 of 100 (Routine)
Riksgransen	Sweden	Record high minimum temperature	6.8 C (44.2 F)	14 of 100 (Routine)

Counts by Type and Timescale

138 records

Records set or tied on 27 May 1940 by type: Highest daily maximum 8, Lowest daily maximum 33, Highest daily minimum 14, Lowest daily minimum 31, Heaviest daily rainfall 52.

Records on 27 May 1940 by type
Record type	Records
Highest daily maximum	8
Lowest daily maximum	33
Highest daily minimum	14
Lowest daily minimum	31
Heaviest daily rainfall	52
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 May 1940 by timescale: all-time 0, monthly 4, daily 134.

How Much Records Were Beaten By

104 broken records

Margins by which the 104 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 18.3. Ties are not counted.

Top 20 by Significance

27 May 1940

Top 20 records on 27 May 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 1940	Ulan-Ude, RU	monthly rain	27.0 mm (1.1 in)	3.2 mm (0.13 in)	43 years	37 of 100 (Notable)
27 May 1940	Stornoway Airport, GB	monthly high min	11.7 C (53.1 F)	0.6 C (1.1 F)	64 years	37 of 100 (Notable)
27 May 1940	Parkers Landing, US	daily rain	31.2 mm (1.2 in)	10.9 mm (0.4 in)	37 years	27 of 100 (Routine)
27 May 1940	Waukesha Wwtp, US	daily rain	47.2 mm (1.9 in)	14.7 mm (0.6 in)	28 years	27 of 100 (Routine)
27 May 1940	Windsor Kings College, CA	daily high max	27.8 C (82.0 F)	0.6 C (1.1 F)	59 years	24 of 100 (Routine)
27 May 1940	Southern Pines 2 W, US	daily rain	43.7 mm (1.7 in)	18.3 mm (0.7 in)	25 years	24 of 100 (Routine)
27 May 1940	Dubois, US	monthly high min	11.1 C (52.0 F)	1.1 C (2.0 F)	33 years	24 of 100 (Routine)
27 May 1940	Frederick, US	daily rain	30.5 mm (1.2 in)	17.8 mm (0.7 in)	35 years	23 of 100 (Routine)
27 May 1940	El Dorado Goodwin Fld, US	daily low max	20.6 C (69.1 F)	3.8 C (6.8 F)	31 years	22 of 100 (Routine)
27 May 1940	Fergana, UZ	daily high min	20.2 C (68.4 F)	0.5 C (0.9 F)	51 years	22 of 100 (Routine)
27 May 1940	Stuttgart, US	daily low max	18.9 C (66.0 F)	2.8 C (5.0 F)	33 years	21 of 100 (Routine)
27 May 1940	Lycippus 1 E, US	daily rain	27.9 mm (1.1 in)	8.3 mm (0.33 in)	27 years	21 of 100 (Routine)
27 May 1940	Fort Good Hope 2, CA	daily rain	12.4 mm (0.5 in)	9.9 mm (0.39 in)	39 years	20 of 100 (Routine)
27 May 1940	Carlisle, US	daily rain	19.8 mm (0.8 in)	6.3 mm (0.25 in)	80 years	20 of 100 (Routine)
27 May 1940	South Pass City, US	daily rain	22.4 mm (0.9 in)	11.0 mm (0.4 in)	34 years	20 of 100 (Routine)
27 May 1940	Regensburg, DE	daily rain	24.9 mm (1.0 in)	6.3 mm (0.25 in)	50 years	20 of 100 (Routine)
27 May 1940	Chandur Bazar, IN	monthly rain	24.9 mm (1.0 in)	2.0 mm (0.08 in)	37 years	20 of 100 (Routine)
27 May 1940	Kholapur, IN	daily rain	12.7 mm (0.5 in)	10.4 mm (0.4 in)	37 years	20 of 100 (Routine)
27 May 1940	Lindenberg, DE	daily rain	12.0 mm (0.5 in)	6.7 mm (0.26 in)	26 years	20 of 100 (Routine)
27 May 1940	Anklam, DE	daily rain	24.9 mm (1.0 in)	5.1 mm (0.20 in)	39 years	20 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

1797 to 1940

Records set or tied on this calendar date in each year from 1797 to 1940. 1940 had 138 records.

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

Records on 05-27 in each year
Year	Records
1797	1
1817	1
1818	1
1834	2
1836	4
1839	1
1845	1
1846	1
1847	1
1849	1
1852	1
1858	1
1860	1
1863	1
1864	3
1868	4
1869	1
1874	1
1876	1
1879	3
1880	5
1881	2
1883	1
1884	1
1885	1
1886	1
1888	1
1889	3
1890	5
1891	2
1892	8
1893	5
1894	13
1895	4
1896	3
1897	1
1898	3
1899	2
1900	4
1901	7
1902	12
1903	7
1904	11
1905	7
1906	28
1907	23
1908	16
1909	7
1910	31
1911	53
1912	27
1913	19
1914	92
1915	63
1916	26
1917	23
1918	39
1919	38
1920	40
1921	56
1922	36
1923	86
1924	92
1925	291
1926	107
1927	183
1928	81
1929	195
1930	99
1931	367
1932	265
1933	284
1934	393
1935	128
1936	468
1937	298
1938	492
1939	312
1940	138
1941	436
1942	657
1943	160
1944	479
1945	272
1946	424
1947	485
1948	324
1949	366
1950	697
1951	578
1952	258
1953	603
1954	367
1955	571
1956	491
1957	367
1958	619
1959	449
1960	421
1961	1,504
1962	460
1963	421
1964	317
1965	652
1966	398
1967	492
1968	605
1969	850
1970	326
1971	612
1972	508
1973	943
1974	630
1975	404
1976	589
1977	663
1978	814
1979	899
1980	644
1981	891
1982	838
1983	1,253
1984	834
1985	873
1986	696
1987	1,037
1988	777
1989	904
1990	804
1991	1,429
1992	1,413
1993	835
1994	848
1995	815
1996	1,378
1997	919
1998	1,079
1999	876
2000	1,347
2001	898
2002	511
2003	918
2004	838
2005	1,094
2006	1,171
2007	886
2008	914
2009	858
2010	955
2011	1,055
2012	1,475
2013	607
2014	835
2015	537
2016	622
2017	541
2018	1,355
2019	960
2020	906
2021	414
2022	653
2023	405
2024	904
2025	761
2026	1,185

Download the Data

Data for records on 1940-05-27: 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 3	71
3 to 5	11
5 to 8	11
8 to 10	3
10 to 13	4
13 to 15	1
15 to 18	1
18 to 20	2