Weather Records on 10 May 1940

317 weather records were set or tied worldwide on 10 May 1940. Highest significance: Mana 1026, US.

Key Facts for 10 May 1940

On 10 May 1940, 317 weather records were set or tied at long-record stations worldwide.
206 were record highs and 29 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 314 daily.
Mana 1026 set a daily record precipitation of 43.2 mm (1.7 in) on 10 May 1940.
Across 163 earlier years (1805 to 2026) the same calendar date averaged 441 records.

Record Map

317 stations

317 station records on 10 May 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 10 May 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mana 1026	United States	Record daily precipitation	43.2 mm (1.7 in)	48 of 100 (Notable)
Colton (Boola Boola)	Australia	Record daily precipitation	26.2 mm (1.0 in)	44 of 100 (Notable)
Maunawili Rch	United States	Record daily precipitation	85.9 mm (3.4 in)	43 of 100 (Notable)
Mount Wedge	Australia	Record daily precipitation	31.8 mm (1.3 in)	41 of 100 (Notable)
Sheringa (Lake Hamilton)	Australia	Record daily precipitation	25.9 mm (1.0 in)	32 of 100 (Routine)
Fayetteville (Pwc)	United States	Record daily precipitation	26.9 mm (1.1 in)	32 of 100 (Routine)
Petropavlovskij Majak	Russia	Record daily precipitation	27.4 mm (1.1 in)	28 of 100 (Routine)
Petropavlovsk-Kamchatskij	Russia	Record daily precipitation	27.4 mm (1.1 in)	28 of 100 (Routine)
Babuskin	Russia	Record daily precipitation	26.1 mm (1.0 in)	27 of 100 (Routine)
Cedar Lake	United States	Record high minimum temperature	12.2 C (54.0 F)	26 of 100 (Routine)
Echo	United States	Record high minimum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Barkerville	Canada	Record high minimum temperature	4.4 C (39.9 F)	24 of 100 (Routine)
Gurjala(Gurujala)	India	Record daily precipitation	59.9 mm (2.4 in)	24 of 100 (Routine)
Hood Rvr Exp STN	United States	Record high minimum temperature	13.9 C (57.0 F)	24 of 100 (Routine)
Bella Coola	Canada	Record high minimum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Hope Little Mountain	Canada	Record high minimum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Tranquille	Canada	Record high minimum temperature	13.9 C (57.0 F)	23 of 100 (Routine)
Fort Simpson	Canada	Record daily snowfall	12.7 cm (5.0 in)	23 of 100 (Routine)
Gila Bend 2SE	United States	Record high minimum temperature	22.8 C (73.0 F)	23 of 100 (Routine)
Laketown	United States	Record high maximum temperature	27.2 C (81.0 F)	23 of 100 (Routine)
Sacaton	United States	Record high minimum temperature	23.9 C (75.0 F)	22 of 100 (Routine)
Riverside Fire STN 3	United States	Record high maximum temperature	39.4 C (102.9 F)	22 of 100 (Routine)
The Dalles	United States	Record high minimum temperature	16.1 C (61.0 F)	22 of 100 (Routine)
Sedro-Woolley	United States	Record high minimum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Agassiz Cda	Canada	Record high minimum temperature	14.4 C (57.9 F)	21 of 100 (Routine)
Paso Robles	United States	Record high minimum temperature	12.2 C (54.0 F)	21 of 100 (Routine)
Oakley	United States	Record high maximum temperature	32.2 C (90.0 F)	21 of 100 (Routine)
Rockport 1 ESE	United States	Record low minimum temperature	-0.6 C (30.9 F)	21 of 100 (Routine)
Snoqualmie Falls	United States	Record high minimum temperature	12.8 C (55.0 F)	21 of 100 (Routine)
Wilbur	United States	Record high minimum temperature	13.3 C (55.9 F)	21 of 100 (Routine)
Irkutsk	Russia	Record daily precipitation	24.7 mm (1.0 in)	20 of 100 (Routine)
Dillalah	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Morven Post Office	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Malvern Hills	Australia	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Mitchell Post Office	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Redford	Australia	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Listowel Downs	Australia	Record daily precipitation	4.3 mm (0.17 in)	20 of 100 (Routine)
Alice Post Office	Australia	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Bowen Downs	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Llanrheidol Station	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Bulgroo Station	Australia	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Summerville 4W	United States	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Kahuku 912	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Forest Vale	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Jericho Store	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Jakutsk	Russia	Record daily precipitation	6.3 mm (0.25 in)	20 of 100 (Routine)
Muttaburra	Australia	Record daily precipitation	2.0 mm (0.08 in)	20 of 100 (Routine)
Terrick Terrick Stud	Australia	Record daily precipitation	7.6 mm (0.30 in)	20 of 100 (Routine)
Woomera (Oakden Hills)	Australia	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Coreena	Australia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Blackall Township	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Murrays Lagoon (Bayside)	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Barcaldine Post Office	Australia	Record daily precipitation	8.6 mm (0.34 in)	20 of 100 (Routine)
Saltern Post Office	Australia	Record daily precipitation	5.8 mm (0.23 in)	20 of 100 (Routine)
Steveston	Canada	Record high minimum temperature	12.2 C (54.0 F)	20 of 100 (Routine)
Vancouver Pmo	Canada	Record high minimum temperature	13.9 C (57.0 F)	20 of 100 (Routine)
Sorve	Estonia	Record daily precipitation	5.1 mm (0.20 in)	20 of 100 (Routine)
Twin Falls 2 NNE	United States	Record high maximum temperature	32.8 C (91.0 F)	20 of 100 (Routine)
Hermiston 1 SE	United States	Record high minimum temperature	15.6 C (60.1 F)	20 of 100 (Routine)
Weston 2 SE	United States	Record high minimum temperature	16.7 C (62.1 F)	20 of 100 (Routine)

Counts by Type and Timescale

317 records

Records set or tied on 10 May 1940 by type: Highest daily maximum 107, Lowest daily maximum 12, Highest daily minimum 99, Lowest daily minimum 17, Heaviest daily rainfall 81, Heaviest daily snowfall 1.

Records on 10 May 1940 by type
Record type	Records
Highest daily maximum	107
Lowest daily maximum	12
Highest daily minimum	99
Lowest daily minimum	17
Heaviest daily rainfall	81
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 10 May 1940 by timescale: all-time 0, monthly 3, daily 314.

How Much Records Were Beaten By

251 broken records

Margins by which the 251 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 69.0. Ties are not counted.

Top 20 by Significance

10 May 1940

Top 20 records on 10 May 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 May 1940	Mana 1026, US	daily rain	43.2 mm (1.7 in)	37.4 mm (1.5 in)	18 years	48 of 100 (Notable)
10 May 1940	Colton (Boola Boola), AU	daily rain	26.2 mm (1.0 in)	15.8 mm (0.6 in)	43 years	44 of 100 (Notable)
10 May 1940	Maunawili Rch, US	daily rain	85.9 mm (3.4 in)	54.1 mm (2.1 in)	1 year	43 of 100 (Notable)
10 May 1940	Mount Wedge, AU	daily rain	31.8 mm (1.3 in)	22.9 mm (0.9 in)	13 years	41 of 100 (Notable)
10 May 1940	Sheringa (Lake Hamilton), AU	daily rain	25.9 mm (1.0 in)	11.7 mm (0.5 in)	21 years	32 of 100 (Routine)
10 May 1940	Fayetteville (Pwc), US	daily rain	26.9 mm (1.1 in)	23.1 mm (0.9 in)	36 years	32 of 100 (Routine)
10 May 1940	Petropavlovskij Majak, RU	daily rain	27.4 mm (1.1 in)	15.3 mm (0.6 in)	12 years	28 of 100 (Routine)
10 May 1940	Petropavlovsk-Kamchatskij, RU	daily rain	27.4 mm (1.1 in)	15.3 mm (0.6 in)	12 years	28 of 100 (Routine)
10 May 1940	Babuskin, RU	daily rain	26.1 mm (1.0 in)	13.9 mm (0.5 in)	5 years	27 of 100 (Routine)
10 May 1940	Cedar Lake, US	daily high min	12.2 C (54.0 F)	3.9 C (7.0 F)	30 years	26 of 100 (Routine)
10 May 1940	Echo, US	daily high min	17.2 C (63.0 F)	4.4 C (7.9 F)	34 years	25 of 100 (Routine)
10 May 1940	Barkerville, CA	daily high min	4.4 C (39.9 F)	1.6 C (2.9 F)	49 years	24 of 100 (Routine)
10 May 1940	Gurjala(Gurujala), IN	monthly rain	59.9 mm (2.4 in)	8.1 mm (0.32 in)	12 years	24 of 100 (Routine)
10 May 1940	Hood Rvr Exp STN, US	daily high min	13.9 C (57.0 F)	2.8 C (5.0 F)	40 years	24 of 100 (Routine)
10 May 1940	Bella Coola, CA	daily high min	10.0 C (50.0 F)	2.2 C (4.0 F)	41 years	23 of 100 (Routine)
10 May 1940	Hope Little Mountain, CA	daily high min	13.3 C (55.9 F)	4.4 C (7.9 F)	16 years	23 of 100 (Routine)
10 May 1940	Tranquille, CA	daily high min	13.9 C (57.0 F)	3.9 C (7.0 F)	30 years	23 of 100 (Routine)
10 May 1940	Fort Simpson, CA	daily snowfall	12.7 cm (5.0 in)	6.9 cm (2.7 in)	40 years	23 of 100 (Routine)
10 May 1940	Gila Bend 2SE, US	daily high min	22.8 C (73.0 F)	5.6 C (10.1 F)	12 years	23 of 100 (Routine)
10 May 1940	Laketown, US	daily high max	27.2 C (81.0 F)	4.4 C (7.9 F)	38 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

1805 to 1940

Records set or tied on this calendar date in each year from 1805 to 1940. 1940 had 317 records.

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

Records on 05-10 in each year
Year	Records
1805	1
1814	2
1832	1
1834	1
1836	4
1838	1
1843	1
1846	1
1848	1
1855	2
1858	1
1860	1
1861	2
1867	3
1868	1
1869	1
1872	1
1874	4
1876	1
1878	1
1879	2
1880	3
1881	3
1883	1
1884	2
1885	2
1886	1
1887	1
1888	2
1889	4
1890	2
1891	2
1893	1
1895	4
1896	6
1897	4
1898	5
1900	4
1901	6
1902	18
1903	6
1904	7
1905	21
1906	42
1907	33
1908	10
1909	17
1910	21
1911	55
1912	15
1913	23
1914	17
1915	18
1916	26
1917	23
1918	105
1919	145
1920	54
1921	143
1922	38
1923	291
1924	198
1925	163
1926	291
1927	296
1928	189
1929	102
1930	647
1931	277
1932	145
1933	516
1934	412
1935	200
1936	439
1937	148
1938	179
1939	179
1940	317
1941	257
1942	237
1943	482
1944	200
1945	646
1946	455
1947	820
1948	491
1949	492
1950	356
1951	281
1952	342
1953	627
1954	554
1955	272
1956	669
1957	374
1958	338
1959	192
1960	660
1961	722
1962	593
1963	951
1964	259
1965	413
1966	1,290
1967	932
1968	861
1969	325
1970	555
1971	416
1972	573
1973	429
1974	608
1975	448
1976	672
1977	1,075
1978	815
1979	1,927
1980	865
1981	1,213
1982	671
1983	753
1984	635
1985	925
1986	669
1987	1,270
1988	490
1989	1,365
1990	1,071
1991	854
1992	875
1993	1,056
1994	622
1995	1,129
1996	1,469
1997	1,215
1998	1,268
1999	1,299
2000	1,036
2001	842
2002	867
2003	1,688
2004	735
2005	761
2006	879
2007	815
2008	877
2009	651
2010	855
2011	1,288
2012	1,054
2013	635
2014	506
2015	943
2016	815
2017	702
2018	923
2019	1,254
2020	1,346
2021	635
2022	1,346
2023	359
2024	622
2025	1,094
2026	496

Download the Data

Data for records on 1940-05-10: 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 10	228
10 to 20	18
20 to 30	2
30 to 40	1
40 to 50	0
50 to 60	1
60 to 70	1