Weather Records on 24 May 1940

289 weather records were set or tied worldwide on 24 May 1940. Highest significance: Roanoke, US.

Key Facts for 24 May 1940

On 24 May 1940, 289 weather records were set or tied at long-record stations worldwide.
66 were record highs and 101 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 285 daily.
Roanoke set a monthly record daily precipitation of 112.8 mm (4.4 in) on 24 May 1940.
Across 161 earlier years (1794 to 2026) the same calendar date averaged 456 records.

Record Map

289 stations

289 station records on 24 May 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 24 May 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Roanoke	United States	Record daily precipitation	112.8 mm (4.4 in)	64 of 100 (Major)
Ridgetown	Canada	Record daily precipitation	41.9 mm (1.6 in)	56 of 100 (Notable)
Boras	Sweden	Record daily precipitation	40.1 mm (1.6 in)	49 of 100 (Notable)
Woodstock	Canada	Record daily precipitation	40.1 mm (1.6 in)	46 of 100 (Notable)
Lewisburg 3 N	United States	Record daily precipitation	58.9 mm (2.3 in)	44 of 100 (Notable)
Georgetown	Canada	Record daily precipitation	41.9 mm (1.6 in)	43 of 100 (Notable)
Oberlin	United States	Record daily precipitation	49.5 mm (1.9 in)	43 of 100 (Notable)
Owen Sound	Canada	Record daily precipitation	40.6 mm (1.6 in)	42 of 100 (Notable)
Haileybury	Canada	Record daily precipitation	30.2 mm (1.2 in)	41 of 100 (Notable)
Warren 3 S	United States	Record daily precipitation	48.8 mm (1.9 in)	39 of 100 (Notable)
Pinehurst Sthrn Pines	United States	Record daily precipitation	51.1 mm (2.0 in)	37 of 100 (Notable)
Junction 4SSW	United States	Record daily precipitation	91.4 mm (3.6 in)	36 of 100 (Notable)
Lanka	India	Record daily precipitation	45.7 mm (1.8 in)	35 of 100 (Notable)
Cleveland 2717 Euclid	United States	Record daily precipitation	26.2 mm (1.0 in)	35 of 100 (Notable)
Hedal I Valdres	Norway	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
Chatham 2	Canada	Record daily precipitation	34.3 mm (1.4 in)	33 of 100 (Routine)
Port Dover	Canada	Record daily precipitation	30.7 mm (1.2 in)	32 of 100 (Routine)
Lancaster 2 NW	United States	Record daily precipitation	49.0 mm (1.9 in)	30 of 100 (Routine)
Taylorsville 2SW	United States	Record daily precipitation	26.7 mm (1.1 in)	29 of 100 (Routine)
Newell	United States	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
Edmonton	Canada	Record high minimum temperature	15.6 C (60.1 F)	28 of 100 (Routine)
Liberty	United States	Record daily precipitation	48.3 mm (1.9 in)	28 of 100 (Routine)
Rowlesburg 1	United States	Record daily precipitation	32.3 mm (1.3 in)	28 of 100 (Routine)
Maysville Wwtp	United States	Record daily precipitation	57.2 mm (2.3 in)	27 of 100 (Routine)
Goderich	Canada	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Philo 3 SW	United States	Record daily precipitation	32.3 mm (1.3 in)	26 of 100 (Routine)
Arthur City	United States	Record daily precipitation	50.8 mm (2.0 in)	26 of 100 (Routine)
White Sulphur Springs	United States	Record daily precipitation	34.3 mm (1.4 in)	26 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low maximum temperature	13.3 C (55.9 F)	26 of 100 (Routine)
Hiram	United States	Record daily precipitation	52.3 mm (2.1 in)	25 of 100 (Routine)
Millport 4 NE	United States	Record daily precipitation	48.8 mm (1.9 in)	25 of 100 (Routine)
Brantford	Canada	Record daily precipitation	26.7 mm (1.1 in)	23 of 100 (Routine)
Brockton	United States	Record low maximum temperature	9.4 C (48.9 F)	23 of 100 (Routine)
Urbana Wrf	United States	Record low maximum temperature	12.8 C (55.0 F)	23 of 100 (Routine)
Paris	Canada	Record daily precipitation	39.6 mm (1.6 in)	22 of 100 (Routine)
Thomasville	United States	Record daily precipitation	47.5 mm (1.9 in)	22 of 100 (Routine)
Mauzy	United States	Record low maximum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Scottsburg	United States	Record low maximum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Ashland	United States	Record daily precipitation	30.5 mm (1.2 in)	22 of 100 (Routine)
Hillsboro	United States	Record daily precipitation	36.1 mm (1.4 in)	22 of 100 (Routine)
Mc Connellsville Lk 7	United States	Record daily precipitation	37.1 mm (1.5 in)	22 of 100 (Routine)
Hohenwald	United States	Record daily precipitation	34.5 mm (1.4 in)	22 of 100 (Routine)
Blacksburg	United States	Record daily precipitation	37.6 mm (1.5 in)	22 of 100 (Routine)
Tezpur	India	Record daily precipitation	52.8 mm (2.1 in)	21 of 100 (Routine)
St. Petersburg	Russia	Record low minimum temperature	-0.7 C (30.7 F)	21 of 100 (Routine)
Vanersborg	Sweden	Record high minimum temperature	12.5 C (54.5 F)	21 of 100 (Routine)
Saint Bernard	United States	Record daily precipitation	32.8 mm (1.3 in)	21 of 100 (Routine)
Caldwell	United States	Record high minimum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
1 WSW Princeton	United States	Record daily precipitation	50.0 mm (2.0 in)	21 of 100 (Routine)
Mt Airy 2 W	United States	Record daily precipitation	28.7 mm (1.1 in)	21 of 100 (Routine)
Pendleton Dwtn	United States	Record high minimum temperature	14.4 C (57.9 F)	21 of 100 (Routine)
Vernon Coldstream Ranch	Canada	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Simcoe	Canada	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Belleville	Canada	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Hot Springs	United States	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Uralsk	Kazakhstan	Record daily precipitation	9.1 mm (0.36 in)	20 of 100 (Routine)
Malung	Sweden	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Brucefield	Canada	Record daily precipitation	37.8 mm (1.5 in)	20 of 100 (Routine)
Lakefield	Canada	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)

Counts by Type and Timescale

289 records

Records set or tied on 24 May 1940 by type: Highest daily maximum 23, Lowest daily maximum 64, Highest daily minimum 43, Lowest daily minimum 37, Heaviest daily rainfall 122.

Records on 24 May 1940 by type
Record type	Records
Highest daily maximum	23
Lowest daily maximum	64
Highest daily minimum	43
Lowest daily minimum	37
Heaviest daily rainfall	122
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 24 May 1940 by timescale: all-time 0, monthly 4, daily 285.

How Much Records Were Beaten By

243 broken records

Margins by which the 243 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 62.0. Ties are not counted.

Top 20 by Significance

24 May 1940

Top 20 records on 24 May 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 May 1940	Roanoke, US	monthly rain	112.8 mm (4.4 in)	62.0 mm (2.4 in)	33 years	64 of 100 (Major)
24 May 1940	Ridgetown, CA	daily rain	41.9 mm (1.6 in)	33.5 mm (1.3 in)	52 years	56 of 100 (Notable)
24 May 1940	Boras, SE	daily rain	40.1 mm (1.6 in)	24.8 mm (1.0 in)	14 years	49 of 100 (Notable)
24 May 1940	Woodstock, CA	daily rain	40.1 mm (1.6 in)	16.5 mm (0.6 in)	65 years	46 of 100 (Notable)
24 May 1940	Lewisburg 3 N, US	daily rain	58.9 mm (2.3 in)	33.0 mm (1.3 in)	2 years	44 of 100 (Notable)
24 May 1940	Georgetown, CA	daily rain	41.9 mm (1.6 in)	25.9 mm (1.0 in)	7 years	43 of 100 (Notable)
24 May 1940	Oberlin, US	daily rain	49.5 mm (1.9 in)	30.7 mm (1.2 in)	15 years	43 of 100 (Notable)
24 May 1940	Owen Sound, CA	daily rain	40.6 mm (1.6 in)	22.1 mm (0.9 in)	39 years	42 of 100 (Notable)
24 May 1940	Haileybury, CA	daily rain	30.2 mm (1.2 in)	20.0 mm (0.8 in)	30 years	41 of 100 (Notable)
24 May 1940	Warren 3 S, US	daily rain	48.8 mm (1.9 in)	27.2 mm (1.1 in)	15 years	39 of 100 (Notable)
24 May 1940	Pinehurst Sthrn Pines, US	daily rain	51.1 mm (2.0 in)	33.3 mm (1.3 in)	22 years	37 of 100 (Notable)
24 May 1940	Junction 4SSW, US	daily rain	91.4 mm (3.6 in)	42.4 mm (1.7 in)	32 years	36 of 100 (Notable)
24 May 1940	Lanka, IN	daily rain	45.7 mm (1.8 in)	31.7 mm (1.2 in)	39 years	35 of 100 (Notable)
24 May 1940	Cleveland 2717 Euclid, US	daily rain	26.2 mm (1.0 in)	7.1 mm (0.28 in)	64 years	35 of 100 (Notable)
24 May 1940	Hedal I Valdres, NO	daily rain	26.4 mm (1.0 in)	16.3 mm (0.6 in)	10 years	34 of 100 (Routine)
24 May 1940	Chatham 2, CA	daily rain	34.3 mm (1.4 in)	12.7 mm (0.5 in)	49 years	33 of 100 (Routine)
24 May 1940	Port Dover, CA	daily rain	30.7 mm (1.2 in)	15.5 mm (0.6 in)	16 years	32 of 100 (Routine)
24 May 1940	Lancaster 2 NW, US	daily rain	49.0 mm (1.9 in)	20.3 mm (0.8 in)	19 years	30 of 100 (Routine)
24 May 1940	Taylorsville 2SW, US	daily rain	26.7 mm (1.1 in)	18.6 mm (0.7 in)	38 years	29 of 100 (Routine)
24 May 1940	Newell, US	daily rain	27.9 mm (1.1 in)	17.0 mm (0.7 in)	15 years	29 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

1794 to 1940

Records set or tied on this calendar date in each year from 1794 to 1940. 1940 had 289 records.

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

Records on 05-24 in each year
Year	Records
1794	1
1795	1
1797	1
1817	1
1831	1
1837	2
1838	1
1840	1
1841	2
1844	1
1847	3
1848	1
1864	1
1865	1
1866	5
1867	7
1868	2
1870	1
1877	2
1880	2
1882	2
1884	2
1886	2
1888	1
1889	3
1890	3
1891	4
1892	1
1893	8
1894	1
1895	1
1896	1
1897	5
1898	4
1899	7
1900	5
1901	7
1902	8
1903	9
1904	14
1905	16
1906	36
1907	15
1908	16
1909	16
1910	34
1911	28
1912	41
1913	30
1914	35
1915	8
1916	19
1917	86
1918	27
1919	25
1920	38
1921	139
1922	101
1923	106
1924	334
1925	347
1926	284
1927	221
1928	290
1929	112
1930	173
1931	475
1932	251
1933	477
1934	196
1935	426
1936	432
1937	187
1938	438
1939	498
1940	289
1941	499
1942	245
1943	439
1944	710
1945	226
1946	501
1947	456
1948	250
1949	436
1950	640
1951	881
1952	720
1953	1,005
1954	260
1955	841
1956	1,027
1957	513
1958	825
1959	315
1960	476
1961	301
1962	479
1963	734
1964	852
1965	502
1966	340
1967	904
1968	568
1969	408
1970	329
1971	625
1972	487
1973	533
1974	584
1975	886
1976	411
1977	997
1978	797
1979	1,115
1980	978
1981	758
1982	725
1983	1,332
1984	737
1985	637
1986	573
1987	664
1988	689
1989	1,346
1990	923
1991	1,495
1992	1,562
1993	826
1994	832
1995	1,247
1996	1,367
1997	1,028
1998	931
1999	806
2000	1,549
2001	1,335
2002	1,163
2003	1,011
2004	1,276
2005	967
2006	994
2007	1,349
2008	1,173
2009	970
2010	1,699
2011	1,026
2012	983
2013	861
2014	757
2015	501
2016	408
2017	876
2018	595
2019	750
2020	517
2021	583
2022	709
2023	353
2024	930
2025	542
2026	877

Download the Data

Data for records on 1940-05-24: 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	193
10 to 20	33
20 to 30	8
30 to 40	6
40 to 50	2
50 to 60	0
60 to 70	1