Weather Records on 15 May 2017

435 weather records were set or tied worldwide on 15 May 2017. Highest significance: Yuanping, CN.

Key Facts for 15 May 2017

On 15 May 2017, 435 weather records were set or tied at long-record stations worldwide.
212 were record highs and 130 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 5 monthly and 429 daily.
Yuanping set a monthly record daily precipitation of 96.8 mm (3.8 in) on 15 May 2017.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 431 records.

Record Map

435 stations

435 station records on 15 May 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 May 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yuanping	China	Record daily precipitation	96.8 mm (3.8 in)	62 of 100 (Major)
Elista	Russia	Record daily precipitation	49.9 mm (2.0 in)	61 of 100 (Major)
Koloa Mauka 994	United States	Record daily precipitation	63.5 mm (2.5 in)	57 of 100 (Notable)
Eskdalemuir	United Kingdom	Record daily precipitation	39.2 mm (1.5 in)	55 of 100 (Notable)
Brassua Dam	United States	Record daily precipitation	46.2 mm (1.8 in)	51 of 100 (Notable)
Denbarker	Australia	Record daily precipitation	52.0 mm (2.0 in)	50 of 100 (Notable)
Threave	United Kingdom	Record daily precipitation	38.0 mm (1.5 in)	49 of 100 (Notable)
Middleboro	United States	Record low maximum temperature	8.9 C (48.0 F)	49 of 100 (Notable)
Belfast	United States	Record daily precipitation	47.8 mm (1.9 in)	48 of 100 (Notable)
Ajo	United States	Record low minimum temperature	5.6 C (42.1 F)	47 of 100 (Notable)
Durban Intl	South Africa	Record daily precipitation	101.1 mm (4.0 in)	46 of 100 (Notable)
York Pond	United States	Record daily precipitation	58.4 mm (2.3 in)	45 of 100 (Notable)
Blaine	United States	Record low maximum temperature	10.0 C (50.0 F)	45 of 100 (Notable)
Eustis	United States	Record daily precipitation	51.6 mm (2.0 in)	44 of 100 (Notable)
Rangeley	United States	Record daily precipitation	49.5 mm (1.9 in)	44 of 100 (Notable)
Pinkham Notch	United States	Record daily precipitation	50.8 mm (2.0 in)	44 of 100 (Notable)
Ukhta Kalevala	Russia	Record daily precipitation	28.2 mm (1.1 in)	43 of 100 (Notable)
Versailles	United States	Record high maximum temperature	31.1 C (88.0 F)	42 of 100 (Notable)
Diredawa	Ethiopia	Record daily precipitation	49.0 mm (1.9 in)	41 of 100 (Notable)
Arhangelsk	Russia	Record low minimum temperature	-6.2 C (20.8 F)	41 of 100 (Notable)
Woodland	United States	Record daily precipitation	35.3 mm (1.4 in)	41 of 100 (Notable)
Blaine	United States	Record daily precipitation	27.2 mm (1.1 in)	41 of 100 (Notable)
Kielder Castle	United Kingdom	Record daily precipitation	28.6 mm (1.1 in)	40 of 100 (Notable)
Mersa Matruh	Egypt	Record high minimum temperature	19.8 C (67.6 F)	39 of 100 (Notable)
Barguzin	Russia	Record high minimum temperature	9.8 C (49.6 F)	38 of 100 (Notable)
Verhnjaja Gutara	Russia	Record high minimum temperature	9.9 C (49.8 F)	37 of 100 (Notable)
Almaty	Kazakhstan	Record high maximum temperature	32.3 C (90.1 F)	36 of 100 (Notable)
Almaty	Kazakhstan	Record high minimum temperature	20.5 C (68.9 F)	36 of 100 (Notable)
Kanevka	Russia	Record low minimum temperature	-15.3 C (4.5 F)	36 of 100 (Notable)
Berlin	United States	Record daily precipitation	51.6 mm (2.0 in)	36 of 100 (Notable)
Ufa	Russia	Record low minimum temperature	-1.5 C (29.3 F)	35 of 100 (Notable)
Bingham Wyman Dam	United States	Record daily precipitation	32.8 mm (1.3 in)	35 of 100 (Notable)
Lancaster	United States	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Pinkham Notch	United States	Record low maximum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Jimma	Ethiopia	Record daily precipitation	53.1 mm (2.1 in)	34 of 100 (Routine)
Anadyr	Russia	Record high maximum temperature	8.0 C (46.4 F)	34 of 100 (Routine)
Dover-Foxcroft Wwtp	United States	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Moosehead	United States	Record daily precipitation	42.4 mm (1.7 in)	34 of 100 (Routine)
Daly Waters AWS	Australia	Record low minimum temperature	9.2 C (48.6 F)	33 of 100 (Routine)
Ust Tzilma	Russia	Record low maximum temperature	-2.3 C (27.9 F)	33 of 100 (Routine)
Harris STN	United States	Record daily precipitation	45.0 mm (1.8 in)	32 of 100 (Routine)
Jackman	United States	Record daily precipitation	56.9 mm (2.2 in)	32 of 100 (Routine)
Madison	United States	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Santiago 3 E	United States	Record daily precipitation	27.2 mm (1.1 in)	32 of 100 (Routine)
Boise City 2 E	United States	Record high minimum temperature	19.4 C (66.9 F)	32 of 100 (Routine)
Mangareva	French Polynesia	Record daily precipitation	46.0 mm (1.8 in)	31 of 100 (Routine)
Vryheid	South Africa	Record daily precipitation	36.1 mm (1.4 in)	31 of 100 (Routine)
Bayview Model Basin	United States	Record low maximum temperature	5.6 C (42.1 F)	31 of 100 (Routine)
Kyra	Russia	Record high maximum temperature	26.8 C (80.2 F)	30 of 100 (Routine)
Natural Brg	United States	Record low minimum temperature	1.1 C (34.0 F)	30 of 100 (Routine)
Corinna	United States	Record daily precipitation	36.8 mm (1.4 in)	30 of 100 (Routine)
Whitehall	United States	Record low maximum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Arlington	United States	Record daily precipitation	26.7 mm (1.1 in)	30 of 100 (Routine)
Umba	Russia	Record low minimum temperature	-5.5 C (22.1 F)	29 of 100 (Routine)
Ust-Maja	Russia	Record high minimum temperature	7.6 C (45.7 F)	29 of 100 (Routine)
Zhigalovo	Russia	Record high minimum temperature	11.0 C (51.8 F)	29 of 100 (Routine)
Mellen 4 NE	United States	Record daily precipitation	26.7 mm (1.1 in)	29 of 100 (Routine)
Mt Washington	United States	Record snow depth	51.0 cm (20.1 in)	29 of 100 (Routine)
Sisian	Armenia	Record daily precipitation	99.3 mm (3.9 in)	28 of 100 (Routine)
Diredawa	Ethiopia	Record low maximum temperature	29.4 C (84.9 F)	28 of 100 (Routine)

Counts by Type and Timescale

435 records

Records set or tied on 15 May 2017 by type: Highest daily maximum 98, Lowest daily maximum 55, Highest daily minimum 114, Lowest daily minimum 75, Heaviest daily rainfall 88, Heaviest daily snowfall 1, Deepest snow cover 4.

Records on 15 May 2017 by type
Record type	Records
Highest daily maximum	98
Lowest daily maximum	55
Highest daily minimum	114
Lowest daily minimum	75
Heaviest daily rainfall	88
Heaviest daily snowfall	1
Deepest snow cover	4

Records on 15 May 2017 by timescale: all-time 1, monthly 5, daily 429.

How Much Records Were Beaten By

375 broken records

Margins by which the 375 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 129.0. Ties are not counted.

Top 20 by Significance

15 May 2017

Top 20 records on 15 May 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 2017	Yuanping, CN	monthly rain	96.8 mm (3.8 in)	30.8 mm (1.2 in)	25 years	62 of 100 (Major)
15 May 2017	Elista, RU	daily rain	49.9 mm (2.0 in)	30.3 mm (1.2 in)	40 years	61 of 100 (Major)
15 May 2017	Koloa Mauka 994, US	daily rain	63.5 mm (2.5 in)	45.0 mm (1.8 in)	60 years	57 of 100 (Notable)
15 May 2017	Eskdalemuir, GB	daily rain	39.2 mm (1.5 in)	15.7 mm (0.6 in)	83 years	55 of 100 (Notable)
15 May 2017	Brassua Dam, US	daily rain	46.2 mm (1.8 in)	14.7 mm (0.6 in)	80 years	51 of 100 (Notable)
15 May 2017	Denbarker, AU	daily rain	52.0 mm (2.0 in)	28.5 mm (1.1 in)	27 years	50 of 100 (Notable)
15 May 2017	Threave, GB	daily rain	38.0 mm (1.5 in)	24.5 mm (1.0 in)	16 years	49 of 100 (Notable)
15 May 2017	Middleboro, US	daily low max	8.9 C (48.0 F)	5.0 C (9.0 F)	121 years	49 of 100 (Notable)
15 May 2017	Belfast, US	daily rain	47.8 mm (1.9 in)	21.1 mm (0.8 in)	68 years	48 of 100 (Notable)
15 May 2017	Ajo, US	daily low min	5.6 C (42.1 F)	5.0 C (9.0 F)	84 years	47 of 100 (Notable)
15 May 2017	Durban Intl, ZA	daily rain	101.1 mm (4.0 in)	79.8 mm (3.1 in)	7 years	46 of 100 (Notable)
15 May 2017	York Pond, US	monthly rain	58.4 mm (2.3 in)	3.3 mm (0.13 in)	80 years	45 of 100 (Notable)
15 May 2017	Blaine, US	daily low max	10.0 C (50.0 F)	1.7 C (3.1 F)	111 years	45 of 100 (Notable)
15 May 2017	Eustis, US	daily rain	51.6 mm (2.0 in)	29.0 mm (1.1 in)	6 years	44 of 100 (Notable)
15 May 2017	Rangeley, US	daily rain	49.5 mm (1.9 in)	37.8 mm (1.5 in)	0 years	44 of 100 (Notable)
15 May 2017	Pinkham Notch, US	daily rain	50.8 mm (2.0 in)	14.0 mm (0.6 in)	79 years	44 of 100 (Notable)
15 May 2017	Ukhta Kalevala, RU	daily rain	28.2 mm (1.1 in)	14.0 mm (0.6 in)	10 years	43 of 100 (Notable)
15 May 2017	Versailles, US	daily high max	31.1 C (88.0 F)	1.1 C (2.0 F)	111 years	42 of 100 (Notable)
15 May 2017	Diredawa, ET	daily rain	49.0 mm (1.9 in)	25.4 mm (1.0 in)	31 years	41 of 100 (Notable)
15 May 2017	Arhangelsk, RU	daily low min	-6.2 C (20.8 F)	0.8 C (1.4 F)	115 years	41 of 100 (Notable)

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 2017

Records set or tied on this calendar date in each year from 1820 to 2017. 2017 had 435 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 2017-05-15: 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 20	355
20 to 40	14
40 to 60	2
60 to 80	1
80 to 100	1
100 to 120	1
120 to 140	1