Weather Records on 8 May 1940

296 weather records were set or tied worldwide on 8 May 1940. Highest significance: Holly, US.

Key Facts for 8 May 1940

On 8 May 1940, 296 weather records were set or tied at long-record stations worldwide.
194 were record highs and 14 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 292 daily.
Holly set a daily record precipitation of 50.8 mm (2.0 in) on 8 May 1940.
Across 163 earlier years (1795 to 2026) the same calendar date averaged 431 records.

Record Map

296 stations

296 station records on 8 May 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 8 May 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Holly	United States	Record daily precipitation	50.8 mm (2.0 in)	54 of 100 (Notable)
Hugoton	United States	Record daily precipitation	63.0 mm (2.5 in)	47 of 100 (Notable)
Plains	United States	Record daily precipitation	94.0 mm (3.7 in)	33 of 100 (Routine)
Albia 3 NNE	United States	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)
Blaine	United States	Record high minimum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
Plymouth Pwr Substn	United States	Record daily precipitation	52.1 mm (2.1 in)	28 of 100 (Routine)
Sadiya India	India	Record daily precipitation	63.5 mm (2.5 in)	27 of 100 (Routine)
Ulysses 3NE	United States	Record daily precipitation	31.8 mm (1.3 in)	26 of 100 (Routine)
Larned	United States	Record daily precipitation	34.3 mm (1.4 in)	25 of 100 (Routine)
Liberal	United States	Record daily precipitation	43.2 mm (1.7 in)	25 of 100 (Routine)
Ottawa	United States	Record daily precipitation	66.0 mm (2.6 in)	25 of 100 (Routine)
Hunsur	India	Record daily precipitation	51.3 mm (2.0 in)	24 of 100 (Routine)
Chiknayakanihall	India	Record daily precipitation	58.2 mm (2.3 in)	24 of 100 (Routine)
Mt Hope	United States	Record daily precipitation	45.5 mm (1.8 in)	24 of 100 (Routine)
Newton	United States	Record daily precipitation	49.8 mm (2.0 in)	24 of 100 (Routine)
Bowling Green Wwtp	United States	Record daily precipitation	41.9 mm (1.6 in)	24 of 100 (Routine)
Revelstoke	Canada	Record high minimum temperature	8.3 C (46.9 F)	23 of 100 (Routine)
Athens	United States	Record high maximum temperature	36.1 C (97.0 F)	23 of 100 (Routine)
Rock House	United States	Record high minimum temperature	19.4 C (66.9 F)	23 of 100 (Routine)
Fremont	United States	Record daily precipitation	26.7 mm (1.1 in)	23 of 100 (Routine)
Clemson UNIV	United States	Record high maximum temperature	35.0 C (95.0 F)	23 of 100 (Routine)
Bellingham	United States	Record high minimum temperature	12.2 C (54.0 F)	23 of 100 (Routine)
Marlinton	United States	Record high maximum temperature	31.7 C (89.1 F)	23 of 100 (Routine)
Hana 354	United States	Record high minimum temperature	22.8 C (73.0 F)	23 of 100 (Routine)
Sewanee	United States	Record high maximum temperature	31.1 C (88.0 F)	22 of 100 (Routine)
Newport	United States	Record high maximum temperature	19.4 C (66.9 F)	22 of 100 (Routine)
Clanton	United States	Record high maximum temperature	33.9 C (93.0 F)	21 of 100 (Routine)
Dalhart Exp STN	United States	Record daily precipitation	40.4 mm (1.6 in)	21 of 100 (Routine)
Santa Fe	United States	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Carlsbad	United States	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Petropavlovsk	Kazakhstan	Record daily precipitation	11.3 mm (0.4 in)	20 of 100 (Routine)
Espanola	United States	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Las Vegas 2 NW	United States	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Taos Canyon	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Feodosiia	Ukraine	Record daily precipitation	7.9 mm (0.31 in)	20 of 100 (Routine)
Paupong Station	Australia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Black Lake	United States	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Kalgoorlie Post Office	Australia	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Winburg (Pol)	South Africa	Record daily precipitation	1.5 mm (0.06 in)	20 of 100 (Routine)
Henichesk	Ukraine	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Bathurst	Canada	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Elizabethtown	United States	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Hartwell	United States	Record high maximum temperature	35.0 C (95.0 F)	20 of 100 (Routine)
Albany	United States	Record daily precipitation	64.3 mm (2.5 in)	20 of 100 (Routine)
Willapa Harbor	United States	Record high minimum temperature	10.6 C (51.1 F)	20 of 100 (Routine)
Sitka Magnetic Obsy	United States	Record high minimum temperature	7.2 C (45.0 F)	20 of 100 (Routine)
Bulgoo	Australia	Record daily precipitation	9.4 mm (0.37 in)	19 of 100 (Routine)
New Westminster	Canada	Record high minimum temperature	11.7 C (53.1 F)	19 of 100 (Routine)
Griffin	United States	Record high maximum temperature	35.0 C (95.0 F)	19 of 100 (Routine)
Espanola	United States	Record high maximum temperature	33.3 C (91.9 F)	19 of 100 (Routine)
Roy	United States	Record daily precipitation	26.7 mm (1.1 in)	19 of 100 (Routine)
Wauseon Wtp	United States	Record daily precipitation	26.7 mm (1.1 in)	19 of 100 (Routine)
Durant	United States	Record daily precipitation	27.9 mm (1.1 in)	19 of 100 (Routine)
Sewanee	United States	Record high minimum temperature	19.4 C (66.9 F)	19 of 100 (Routine)
Sedro-Woolley	United States	Record high minimum temperature	12.2 C (54.0 F)	19 of 100 (Routine)
Chattanooga Wb City	United States	Record high minimum temperature	20.0 C (68.0 F)	19 of 100 (Routine)
Dum Dooma /Sookerating Aab	India	Record daily precipitation	36.8 mm (1.4 in)	18 of 100 (Routine)
Karikode	India	Record daily precipitation	58.4 mm (2.3 in)	18 of 100 (Routine)
McPherson	United States	Record daily precipitation	47.2 mm (1.9 in)	18 of 100 (Routine)
St Charles Elm Pt	United States	Record high minimum temperature	17.2 C (63.0 F)	18 of 100 (Routine)

Counts by Type and Timescale

296 records

Records set or tied on 8 May 1940 by type: Highest daily maximum 147, Lowest daily maximum 9, Highest daily minimum 47, Lowest daily minimum 5, Heaviest daily rainfall 88.

Records on 8 May 1940 by type
Record type	Records
Highest daily maximum	147
Lowest daily maximum	9
Highest daily minimum	47
Lowest daily minimum	5
Heaviest daily rainfall	88
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 8 May 1940 by timescale: all-time 0, monthly 4, daily 292.

How Much Records Were Beaten By

228 broken records

Margins by which the 228 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 49.3. Ties are not counted.

Top 20 by Significance

8 May 1940

Top 20 records on 8 May 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 May 1940	Holly, US	daily rain	50.8 mm (2.0 in)	40.9 mm (1.6 in)	42 years	54 of 100 (Notable)
8 May 1940	Hugoton, US	daily rain	63.0 mm (2.5 in)	49.3 mm (1.9 in)	20 years	47 of 100 (Notable)
8 May 1940	Plains, US	monthly rain	94.0 mm (3.7 in)	21.4 mm (0.8 in)	13 years	33 of 100 (Routine)
8 May 1940	Albia 3 NNE, US	daily rain	34.3 mm (1.4 in)	19.6 mm (0.8 in)	34 years	29 of 100 (Routine)
8 May 1940	Blaine, US	daily high min	14.4 C (57.9 F)	4.4 C (7.9 F)	35 years	29 of 100 (Routine)
8 May 1940	Plymouth Pwr Substn, US	daily rain	52.1 mm (2.1 in)	24.2 mm (1.0 in)	7 years	28 of 100 (Routine)
8 May 1940	Sadiya India, IN	daily rain	63.5 mm (2.5 in)	22.9 mm (0.9 in)	39 years	27 of 100 (Routine)
8 May 1940	Ulysses 3NE, US	daily rain	31.8 mm (1.3 in)	12.7 mm (0.5 in)	42 years	26 of 100 (Routine)
8 May 1940	Larned, US	daily rain	34.3 mm (1.4 in)	15.2 mm (0.6 in)	35 years	25 of 100 (Routine)
8 May 1940	Liberal, US	daily rain	43.2 mm (1.7 in)	25.4 mm (1.0 in)	4 years	25 of 100 (Routine)
8 May 1940	Ottawa, US	daily rain	66.0 mm (2.6 in)	17.7 mm (0.7 in)	31 years	25 of 100 (Routine)
8 May 1940	Hunsur, IN	daily rain	51.3 mm (2.0 in)	21.1 mm (0.8 in)	29 years	24 of 100 (Routine)
8 May 1940	Chiknayakanihall, IN	daily rain	58.2 mm (2.3 in)	29.2 mm (1.1 in)	9 years	24 of 100 (Routine)
8 May 1940	Mt Hope, US	daily rain	45.5 mm (1.8 in)	21.4 mm (0.8 in)	18 years	24 of 100 (Routine)
8 May 1940	Newton, US	daily rain	49.8 mm (2.0 in)	21.9 mm (0.9 in)	18 years	24 of 100 (Routine)
8 May 1940	Bowling Green Wwtp, US	daily rain	41.9 mm (1.6 in)	11.4 mm (0.4 in)	26 years	24 of 100 (Routine)
8 May 1940	Revelstoke, CA	daily high min	8.3 C (46.9 F)	2.2 C (4.0 F)	40 years	23 of 100 (Routine)
8 May 1940	Athens, US	daily high max	36.1 C (97.0 F)	3.3 C (5.9 F)	24 years	23 of 100 (Routine)
8 May 1940	Rock House, US	monthly high min	19.4 C (66.9 F)	0.5 C (0.9 F)	28 years	23 of 100 (Routine)
8 May 1940	Fremont, US	daily rain	26.7 mm (1.1 in)	12.7 mm (0.5 in)	26 years	23 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

1795 to 1940

Records set or tied on this calendar date in each year from 1795 to 1940. 1940 had 296 records.

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

Records on 05-08 in each year
Year	Records
1795	2
1806	1
1825	1
1834	1
1845	2
1848	1
1849	1
1851	1
1852	1
1857	1
1858	2
1861	2
1862	1
1863	1
1865	1
1867	4
1868	1
1873	1
1874	3
1876	3
1879	1
1880	1
1882	4
1883	1
1885	1
1886	3
1888	2
1889	1
1890	2
1891	2
1892	2
1893	3
1894	1
1895	1
1896	3
1897	5
1898	2
1900	10
1901	5
1902	5
1903	11
1904	13
1905	17
1906	27
1907	7
1908	14
1909	19
1910	26
1911	34
1912	36
1913	34
1914	71
1915	35
1916	17
1917	108
1918	47
1919	132
1920	62
1921	35
1922	38
1923	510
1924	196
1925	272
1926	191
1927	328
1928	310
1929	194
1930	572
1931	403
1932	283
1933	553
1934	728
1935	78
1936	650
1937	107
1938	425
1939	235
1940	296
1941	271
1942	128
1943	465
1944	258
1945	646
1946	271
1947	1,152
1948	453
1949	361
1950	748
1951	274
1952	794
1953	580
1954	463
1955	411
1956	490
1957	546
1958	440
1959	252
1960	748
1961	556
1962	450
1963	1,105
1964	731
1965	704
1966	522
1967	573
1968	424
1969	542
1970	501
1971	413
1972	509
1973	527
1974	777
1975	555
1976	989
1977	682
1978	676
1979	1,113
1980	722
1981	613
1982	557
1983	638
1984	1,072
1985	591
1986	1,210
1987	1,226
1988	632
1989	1,543
1990	715
1991	710
1992	1,740
1993	892
1994	768
1995	1,340
1996	908
1997	973
1998	1,348
1999	985
2000	1,782
2001	851
2002	1,843
2003	1,420
2004	1,133
2005	685
2006	801
2007	718
2008	595
2009	779
2010	1,079
2011	602
2012	709
2013	686
2014	958
2015	647
2016	752
2017	467
2018	711
2019	723
2020	599
2021	419
2022	908
2023	579
2024	1,015
2025	380
2026	292

Download the Data

Data for records on 1940-05-08: 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).

Histogram of margins by which records were beaten on 8 May 1940
Margin	Records
0 to 10	192
10 to 20	24
20 to 30	10
30 to 40	0
40 to 50	2