Weather Records on 15 May 1931

459 weather records were set or tied worldwide on 15 May 1931. Highest significance: Tucson WFO, US.

Key Facts for 15 May 1931

On 15 May 1931, 459 weather records were set or tied at long-record stations worldwide.
224 were record highs and 13 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 447 daily.
Tucson WFO set a monthly record daily precipitation of 34.0 mm (1.3 in) on 15 May 1931.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 431 records.

Record Map

459 stations

459 station records on 15 May 1931 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 May 1931: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tucson WFO	United States	Record daily precipitation	34.0 mm (1.3 in)	50 of 100 (Notable)
Shearleys Tank	Australia	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Amchong(Sonepur)	India	Record daily precipitation	73.2 mm (2.9 in)	38 of 100 (Notable)
Wandsworth (Strabanne)	Australia	Record daily precipitation	49.8 mm (2.0 in)	37 of 100 (Notable)
Bundarra Post Office	Australia	Record daily precipitation	45.7 mm (1.8 in)	35 of 100 (Notable)
Uralla (Salisbury Court)	Australia	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Walcha Post Office	Australia	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Emmaville (Strathbogie)	Australia	Record daily precipitation	41.7 mm (1.6 in)	33 of 100 (Routine)
Healesville (Nyora)	Australia	Record daily precipitation	36.1 mm (1.4 in)	33 of 100 (Routine)
Bijni	India	Record daily precipitation	143.8 mm (5.7 in)	31 of 100 (Routine)
Eidsvold Post Office	Australia	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Beaudesert Cryna	Australia	Record daily precipitation	30.7 mm (1.2 in)	29 of 100 (Routine)
Cambooya Post Office	Australia	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Warialda Post Office	Australia	Record daily precipitation	36.8 mm (1.4 in)	29 of 100 (Routine)
Escanaba	United States	Record high minimum temperature	13.9 C (57.0 F)	29 of 100 (Routine)
Collaroy Station	Australia	Record daily precipitation	29.0 mm (1.1 in)	28 of 100 (Routine)
Boonara	Australia	Record daily precipitation	27.9 mm (1.1 in)	28 of 100 (Routine)
Mitchell Post Office	Australia	Record daily precipitation	33.5 mm (1.3 in)	28 of 100 (Routine)
Suri	India	Record daily precipitation	60.2 mm (2.4 in)	28 of 100 (Routine)
Bauhinia Downs Store	Australia	Record daily precipitation	30.7 mm (1.2 in)	27 of 100 (Routine)
Gayndah Post Office	Australia	Record daily precipitation	26.7 mm (1.1 in)	25 of 100 (Routine)
Texas Station	Australia	Record daily precipitation	31.5 mm (1.2 in)	25 of 100 (Routine)
Beechal	Australia	Record daily precipitation	34.8 mm (1.4 in)	25 of 100 (Routine)
Mungindi (Cambo Cambo)	Australia	Record daily precipitation	46.5 mm (1.8 in)	25 of 100 (Routine)
Uralla (Dumaresq St)	Australia	Record daily precipitation	33.8 mm (1.3 in)	24 of 100 (Routine)
Yarra Junction (Gilderoy)	Australia	Record daily precipitation	30.7 mm (1.2 in)	24 of 100 (Routine)
Sarangarh	India	Record daily precipitation	32.5 mm (1.3 in)	24 of 100 (Routine)
Inverell Comparison	Australia	Record daily precipitation	33.5 mm (1.3 in)	23 of 100 (Routine)
Amenia	United States	Record high maximum temperature	37.8 C (100.0 F)	23 of 100 (Routine)
Armour	United States	Record high minimum temperature	21.7 C (71.1 F)	23 of 100 (Routine)
Cape Capricorn Lighthouse	Australia	Record daily precipitation	27.9 mm (1.1 in)	22 of 100 (Routine)
Taunton	United States	Record daily precipitation	44.5 mm (1.8 in)	22 of 100 (Routine)
Pokegama Dam	United States	Record high minimum temperature	14.4 C (57.9 F)	22 of 100 (Routine)
Fort National	Algeria	Record high maximum temperature	28.0 C (82.4 F)	21 of 100 (Routine)
Mundoolin	Australia	Record daily precipitation	26.7 mm (1.1 in)	21 of 100 (Routine)
Harrisville	United States	Record high maximum temperature	27.2 C (81.0 F)	21 of 100 (Routine)
Kalispell Glacier AP	United States	Record high minimum temperature	12.2 C (54.0 F)	21 of 100 (Routine)
Wahpeton 3 N	United States	Record high maximum temperature	36.7 C (98.1 F)	21 of 100 (Routine)
Nordby (Fano)	Denmark	Record daily precipitation	21.5 mm (0.8 in)	20 of 100 (Routine)
Nanango Wills St	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Killarney Post Office	Australia	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Tenterfield (Federation Park)	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Kew	Australia	Record daily precipitation	8.6 mm (0.34 in)	20 of 100 (Routine)
Bimerah	Australia	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Chelsea	United States	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Tranebjerg	Denmark	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Ganca	Azerbaijan	Record daily precipitation	10.8 mm (0.4 in)	20 of 100 (Routine)
Karumba Pilot Station	Australia	Record daily precipitation	3.8 mm (0.15 in)	20 of 100 (Routine)
Rockhampton Post Office	Australia	Record daily precipitation	17.5 mm (0.7 in)	20 of 100 (Routine)
Clifton Post Office	Australia	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Sawar	India	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Phalodi	India	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Maryland	Australia	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Marlborough Post Office	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Duaringa Post Office	Australia	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Kapunda	Australia	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Kabra Railway STN	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Sorell (Whitlea)	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Arwal	India	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Banswara	India	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)

Counts by Type and Timescale

459 records

Records set or tied on 15 May 1931 by type: Highest daily maximum 155, Lowest daily maximum 6, Highest daily minimum 69, Lowest daily minimum 7, Heaviest daily rainfall 222.

Records on 15 May 1931 by type
Record type	Records
Highest daily maximum	155
Lowest daily maximum	6
Highest daily minimum	69
Lowest daily minimum	7
Heaviest daily rainfall	222
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 May 1931 by timescale: all-time 0, monthly 12, daily 447.

How Much Records Were Beaten By

402 broken records

Margins by which the 402 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 60.0. Ties are not counted.

Top 20 by Significance

15 May 1931

Top 20 records on 15 May 1931 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1931	Tucson WFO, US	monthly rain	34.0 mm (1.3 in)	15.2 mm (0.6 in)	13 years	50 of 100 (Notable)
15 May 1931	Shearleys Tank, AU	monthly rain	50.8 mm (2.0 in)	12.4 mm (0.5 in)	35 years	41 of 100 (Notable)
15 May 1931	Amchong(Sonepur), IN	daily rain	73.2 mm (2.9 in)	47.8 mm (1.9 in)	6 years	38 of 100 (Notable)
15 May 1931	Wandsworth (Strabanne), AU	daily rain	49.8 mm (2.0 in)	30.5 mm (1.2 in)	16 years	37 of 100 (Notable)
15 May 1931	Bundarra Post Office, AU	daily rain	45.7 mm (1.8 in)	28.2 mm (1.1 in)	16 years	35 of 100 (Notable)
15 May 1931	Uralla (Salisbury Court), AU	daily rain	36.6 mm (1.4 in)	17.8 mm (0.7 in)	17 years	34 of 100 (Routine)
15 May 1931	Walcha Post Office, AU	daily rain	36.6 mm (1.4 in)	12.2 mm (0.5 in)	47 years	34 of 100 (Routine)
15 May 1931	Emmaville (Strathbogie), AU	daily rain	41.7 mm (1.6 in)	14.8 mm (0.6 in)	53 years	33 of 100 (Routine)
15 May 1931	Healesville (Nyora), AU	daily rain	36.1 mm (1.4 in)	21.6 mm (0.9 in)	16 years	33 of 100 (Routine)
15 May 1931	Bijni, IN	daily rain	143.8 mm (5.7 in)	60.0 mm (2.4 in)	29 years	31 of 100 (Routine)
15 May 1931	Eidsvold Post Office, AU	daily rain	35.6 mm (1.4 in)	22.9 mm (0.9 in)	37 years	30 of 100 (Routine)
15 May 1931	Beaudesert Cryna, AU	daily rain	30.7 mm (1.2 in)	23.1 mm (0.9 in)	26 years	29 of 100 (Routine)
15 May 1931	Cambooya Post Office, AU	daily rain	25.4 mm (1.0 in)	15.5 mm (0.6 in)	30 years	29 of 100 (Routine)
15 May 1931	Warialda Post Office, AU	daily rain	36.8 mm (1.4 in)	23.6 mm (0.9 in)	6 years	29 of 100 (Routine)
15 May 1931	Escanaba, US	daily high min	13.9 C (57.0 F)	4.5 C (8.1 F)	43 years	29 of 100 (Routine)
15 May 1931	Collaroy Station, AU	daily rain	29.0 mm (1.1 in)	15.0 mm (0.6 in)	36 years	28 of 100 (Routine)
15 May 1931	Boonara, AU	daily rain	27.9 mm (1.1 in)	15.7 mm (0.6 in)	30 years	28 of 100 (Routine)
15 May 1931	Mitchell Post Office, AU	daily rain	33.5 mm (1.3 in)	15.5 mm (0.6 in)	30 years	28 of 100 (Routine)
15 May 1931	Suri, IN	daily rain	60.2 mm (2.4 in)	31.0 mm (1.2 in)	24 years	28 of 100 (Routine)
15 May 1931	Bauhinia Downs Store, AU	daily rain	30.7 mm (1.2 in)	23.1 mm (0.9 in)	30 years	27 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

1820 to 1931

Records set or tied on this calendar date in each year from 1820 to 1931. 1931 had 459 records.

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

Records on 05-15 in each year
Year	Records
1820	1
1825	1
1831	1
1832	1
1837	2
1845	1
1847	2
1848	1
1855	2
1857	2
1859	1
1862	1
1863	1
1865	1
1866	2
1867	1
1868	2
1870	1
1871	3
1874	2
1876	4
1878	1
1879	2
1881	1
1883	1
1885	1
1886	2
1888	3
1891	3
1893	5
1894	2
1895	4
1896	2
1897	4
1898	3
1899	9
1900	9
1901	2
1902	9
1903	4
1904	13
1905	16
1906	10
1907	27
1908	25
1909	89
1910	27
1911	27
1912	26
1913	60
1914	16
1915	236
1916	27
1917	80
1918	133
1919	25
1920	58
1921	92
1922	30
1923	125
1924	174
1925	100
1926	161
1927	191
1928	144
1929	161
1930	136
1931	459
1932	368
1933	439
1934	227
1935	288
1936	372
1937	373
1938	393
1939	351
1940	179
1941	454
1942	701
1943	568
1944	630
1945	588
1946	238
1947	334
1948	264
1949	363
1950	260
1951	736
1952	476
1953	426
1954	355
1955	538
1956	466
1957	521
1958	605
1959	764
1960	291
1961	508
1962	1,128
1963	782
1964	347
1965	320
1966	389
1967	609
1968	1,019
1969	790
1970	512
1971	351
1972	484
1973	818
1974	1,230
1975	372
1976	803
1977	1,186
1978	922
1979	404
1980	625
1981	586
1982	500
1983	1,215
1984	1,059
1985	649
1986	679
1987	1,073
1988	643
1989	552
1990	776
1991	1,179
1992	944
1993	784
1994	910
1995	1,750
1996	1,452
1997	1,175
1998	1,641
1999	810
2000	850
2001	1,280
2002	801
2003	1,023
2004	1,046
2005	767
2006	955
2007	949
2008	995
2009	675
2010	1,088
2011	1,298
2012	751
2013	1,081
2014	1,411
2015	717
2016	890
2017	435
2018	1,074
2019	627
2020	472
2021	412
2022	847
2023	566
2024	596
2025	801
2026	481

Download the Data

Data for records on 1931-05-15: 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	331
10 to 20	50
20 to 30	17
30 to 40	2
40 to 50	1
50 to 60	1