Weather Records on 15 May 1971

351 weather records were set or tied worldwide on 15 May 1971. Highest significance: Clearwater, US.

Key Facts for 15 May 1971

On 15 May 1971, 351 weather records were set or tied at long-record stations worldwide.
49 were record highs and 188 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 346 daily.
Clearwater set a monthly record daily precipitation of 114.3 mm (4.5 in) on 15 May 1971.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 431 records.

Record Map

351 stations

351 station records on 15 May 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 May 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Clearwater	United States	Record daily precipitation	114.3 mm (4.5 in)	63 of 100 (Major)
King River	Australia	Record daily precipitation	50.0 mm (2.0 in)	55 of 100 (Notable)
Ozark 6 NNW	United States	Record daily precipitation	67.3 mm (2.6 in)	50 of 100 (Notable)
Mt Holly 4 NE	United States	Record daily precipitation	54.6 mm (2.1 in)	46 of 100 (Notable)
Senhor Do Bonfim	Brazil	Record daily precipitation	40.6 mm (1.6 in)	44 of 100 (Notable)
Ft Mill 4 NW	United States	Record daily precipitation	51.3 mm (2.0 in)	42 of 100 (Notable)
Dwtn Charleston	United States	Record daily precipitation	59.2 mm (2.3 in)	41 of 100 (Notable)
Charlotte Douglas AP	United States	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Woodburn	Australia	Record daily precipitation	40.9 mm (1.6 in)	40 of 100 (Notable)
Paysandu	Uruguay	Record daily precipitation	126.0 mm (5.0 in)	40 of 100 (Notable)
Barrett Meadows	Australia	Record daily precipitation	56.4 mm (2.2 in)	39 of 100 (Notable)
La Belle	United States	Record daily precipitation	76.5 mm (3.0 in)	39 of 100 (Notable)
Pao de Acucar	Brazil	Record daily precipitation	55.0 mm (2.2 in)	37 of 100 (Notable)
Ninety Nine Is	United States	Record daily precipitation	57.2 mm (2.3 in)	37 of 100 (Notable)
Saint Paul Is AP	United States	Record snow depth	43.2 cm (17.0 in)	36 of 100 (Notable)
Morgan 1 W	United States	Record low maximum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Albany	Australia	Record daily precipitation	32.8 mm (1.3 in)	33 of 100 (Routine)
Annapolis US Naval Aca	United States	Record low minimum temperature	4.4 C (39.9 F)	33 of 100 (Routine)
Wilson 3 SW	United States	Record daily precipitation	29.2 mm (1.1 in)	33 of 100 (Routine)
Kalgan River	Australia	Record daily precipitation	43.7 mm (1.7 in)	32 of 100 (Routine)
Lumpkin 2 SE	United States	Record low maximum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Gatesville	United States	Record low minimum temperature	5.0 C (41.0 F)	31 of 100 (Routine)
Sulphur Springs	United States	Record low minimum temperature	5.0 C (41.0 F)	31 of 100 (Routine)
Big Creek	Canada	Record low minimum temperature	-9.4 C (15.1 F)	30 of 100 (Routine)
Watson Lake A	Canada	Record daily snowfall	7.1 cm (2.8 in)	30 of 100 (Routine)
Bastrop	United States	Record low minimum temperature	8.9 C (48.0 F)	30 of 100 (Routine)
Salmon Arm	Canada	Record low maximum temperature	8.9 C (48.0 F)	29 of 100 (Routine)
Lumpkin 2 SE	United States	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Forks 1 E	United States	Record daily precipitation	48.0 mm (1.9 in)	29 of 100 (Routine)
Crowley 2 NE	United States	Record low maximum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
Corinth 5 WSW	United States	Record low minimum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Water Valley	United States	Record low minimum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Boerne	United States	Record low minimum temperature	4.4 C (39.9 F)	28 of 100 (Routine)
Liberty	United States	Record low minimum temperature	6.1 C (43.0 F)	28 of 100 (Routine)
Manypeaks	Australia	Record daily precipitation	35.1 mm (1.4 in)	27 of 100 (Routine)
Elkton	United States	Record daily precipitation	37.3 mm (1.5 in)	27 of 100 (Routine)
Jaguarari	Brazil	Record daily precipitation	28.1 mm (1.1 in)	26 of 100 (Routine)
Cumberland	Canada	Record daily precipitation	36.6 mm (1.4 in)	26 of 100 (Routine)
Batesville	United States	Record low minimum temperature	3.9 C (39.0 F)	26 of 100 (Routine)
Luling	United States	Record low minimum temperature	8.3 C (46.9 F)	26 of 100 (Routine)
Denmark	Australia	Record daily precipitation	55.9 mm (2.2 in)	25 of 100 (Routine)
Waren	Germany	Record high minimum temperature	14.4 C (57.9 F)	25 of 100 (Routine)
Conrad	United States	Record low minimum temperature	-4.4 C (24.1 F)	25 of 100 (Routine)
Bethlehem	United States	Record low minimum temperature	-5.0 C (23.0 F)	25 of 100 (Routine)
Daytona Beach Intl AP	United States	Record daily precipitation	34.8 mm (1.4 in)	25 of 100 (Routine)
Piranhas (Marechal Floriano)	Brazil	Record daily precipitation	33.3 mm (1.3 in)	24 of 100 (Routine)
Simao Dias (Anapolis)	Brazil	Record daily precipitation	50.6 mm (2.0 in)	24 of 100 (Routine)
Vernon Coldstream Ranch	Canada	Record low maximum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Monticello 5 SE	United States	Record low maximum temperature	21.7 C (71.1 F)	24 of 100 (Routine)
Great Falls	United States	Record daily precipitation	34.3 mm (1.4 in)	24 of 100 (Routine)
Clarksville 2NE	United States	Record low minimum temperature	5.6 C (42.1 F)	23 of 100 (Routine)
New Braunfels	United States	Record low minimum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
W Palm Beach Intl AP	United States	Record daily precipitation	74.4 mm (2.9 in)	23 of 100 (Routine)
Armstrong	Canada	Record low maximum temperature	10.0 C (50.0 F)	22 of 100 (Routine)
Kamloops	Canada	Record low minimum temperature	-1.1 C (30.0 F)	22 of 100 (Routine)
Crowley 2 NE	United States	Record low minimum temperature	11.7 C (53.1 F)	22 of 100 (Routine)
Peppermint Grove	Australia	Record daily precipitation	28.4 mm (1.1 in)	21 of 100 (Routine)
Paripiranga	Brazil	Record daily precipitation	43.0 mm (1.7 in)	21 of 100 (Routine)
Gavriila Buhta	Russia	Record low minimum temperature	-16.9 C (1.6 F)	21 of 100 (Routine)
Troy	United States	Record low maximum temperature	19.4 C (66.9 F)	21 of 100 (Routine)

Counts by Type and Timescale

351 records

Records set or tied on 15 May 1971 by type: Highest daily maximum 21, Lowest daily maximum 50, Highest daily minimum 28, Lowest daily minimum 138, Heaviest daily rainfall 107, Heaviest daily snowfall 5, Deepest snow cover 2.

Records on 15 May 1971 by type
Record type	Records
Highest daily maximum	21
Lowest daily maximum	50
Highest daily minimum	28
Lowest daily minimum	138
Heaviest daily rainfall	107
Heaviest daily snowfall	5
Deepest snow cover	2

Records on 15 May 1971 by timescale: all-time 0, monthly 5, daily 346.

How Much Records Were Beaten By

263 broken records

Margins by which the 263 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 229.0. Ties are not counted.

Top 20 by Significance

15 May 1971

Top 20 records on 15 May 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1971	Clearwater, US	monthly rain	114.3 mm (4.5 in)	56.9 mm (2.2 in)	31 years	63 of 100 (Major)
15 May 1971	King River, AU	daily rain	50.0 mm (2.0 in)	27.6 mm (1.1 in)	60 years	55 of 100 (Notable)
15 May 1971	Ozark 6 NNW, US	daily rain	67.3 mm (2.6 in)	34.8 mm (1.4 in)	65 years	50 of 100 (Notable)
15 May 1971	Mt Holly 4 NE, US	daily rain	54.6 mm (2.1 in)	36.8 mm (1.4 in)	40 years	46 of 100 (Notable)
15 May 1971	Senhor Do Bonfim, BR	daily rain	40.6 mm (1.6 in)	25.2 mm (1.0 in)	18 years	44 of 100 (Notable)
15 May 1971	Ft Mill 4 NW, US	daily rain	51.3 mm (2.0 in)	30.0 mm (1.2 in)	40 years	42 of 100 (Notable)
15 May 1971	Dwtn Charleston, US	daily rain	59.2 mm (2.3 in)	27.4 mm (1.1 in)	52 years	41 of 100 (Notable)
15 May 1971	Charlotte Douglas AP, US	daily rain	44.5 mm (1.8 in)	33.8 mm (1.3 in)	8 years	41 of 100 (Notable)
15 May 1971	Woodburn, AU	daily rain	40.9 mm (1.6 in)	20.8 mm (0.8 in)	32 years	40 of 100 (Notable)
15 May 1971	Paysandu, UY	monthly rain	126.0 mm (5.0 in)	29.0 mm (1.1 in)	34 years	40 of 100 (Notable)
15 May 1971	Barrett Meadows, AU	daily rain	56.4 mm (2.2 in)	18.8 mm (0.7 in)	50 years	39 of 100 (Notable)
15 May 1971	La Belle, US	daily rain	76.5 mm (3.0 in)	50.3 mm (2.0 in)	16 years	39 of 100 (Notable)
15 May 1971	Pao de Acucar, BR	daily rain	55.0 mm (2.2 in)	29.1 mm (1.1 in)	4 years	37 of 100 (Notable)
15 May 1971	Ninety Nine Is, US	daily rain	57.2 mm (2.3 in)	35.6 mm (1.4 in)	28 years	37 of 100 (Notable)
15 May 1971	Saint Paul Is AP, US	daily snow depth	43.2 cm (17.0 in)	22.9 cm (9.0 in)	16 years	36 of 100 (Notable)
15 May 1971	Morgan 1 W, US	daily low max	21.7 C (71.1 F)	2.2 C (4.0 F)	66 years	34 of 100 (Routine)
15 May 1971	Albany, AU	daily rain	32.8 mm (1.3 in)	9.2 mm (0.36 in)	48 years	33 of 100 (Routine)
15 May 1971	Annapolis US Naval Aca, US	daily low min	4.4 C (39.9 F)	1.7 C (3.1 F)	75 years	33 of 100 (Routine)
15 May 1971	Wilson 3 SW, US	daily rain	29.2 mm (1.1 in)	21.6 mm (0.9 in)	28 years	33 of 100 (Routine)
15 May 1971	Kalgan River, AU	daily rain	43.7 mm (1.7 in)	19.6 mm (0.8 in)	18 years	32 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 1971

Records set or tied on this calendar date in each year from 1820 to 1971. 1971 had 351 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 1971-05-15: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	257
50 to 100	4
100 to 150	1
150 to 200	0
200 to 250	1