Weather Records on 17 May 2015

824 weather records were set or tied worldwide on 17 May 2015. Highest significance: Satna, IN.

Key Facts for 17 May 2015

On 17 May 2015, 824 weather records were set or tied at long-record stations worldwide.
374 were record highs and 136 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 15 monthly and 808 daily.
Satna set a monthly record daily precipitation of 64.0 mm (2.5 in) on 17 May 2015.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 432 records.

Record Map

824 stations

824 station records on 17 May 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Satna	India	Record daily precipitation	64.0 mm (2.5 in)	90 of 100 (Exceptional)
Morris W Cntrl Rsch & Outreach	United States	Record daily precipitation	81.8 mm (3.2 in)	72 of 100 (Major)
Ashton 1N	United States	Record daily precipitation	47.0 mm (1.9 in)	69 of 100 (Major)
Courtenay 1 NW	United States	Record daily precipitation	74.7 mm (2.9 in)	69 of 100 (Major)
Blockton 1W	United States	Record daily precipitation	82.0 mm (3.2 in)	68 of 100 (Major)
Mudanjiang	China	Record daily precipitation	33.5 mm (1.3 in)	64 of 100 (Major)
Cape Naturaliste	Australia	Record daily precipitation	58.2 mm (2.3 in)	63 of 100 (Major)
Alta	United States	Record daily precipitation	111.8 mm (4.4 in)	63 of 100 (Major)
Verescagino	Russia	Record daily precipitation	87.9 mm (3.5 in)	61 of 100 (Major)
Greenfield	United States	Record daily precipitation	67.3 mm (2.6 in)	59 of 100 (Notable)
Lamoni	United States	Record daily precipitation	53.1 mm (2.1 in)	59 of 100 (Notable)
Hamilton 2W	United States	Record daily precipitation	127.8 mm (5.0 in)	58 of 100 (Notable)
Changchun	China	Record daily precipitation	52.3 mm (2.1 in)	57 of 100 (Notable)
Sumiha	Russia	Record daily precipitation	39.1 mm (1.5 in)	57 of 100 (Notable)
Kenmare 1 WSW	United States	Record daily precipitation	50.8 mm (2.0 in)	57 of 100 (Notable)
Perry	United States	Record daily precipitation	43.7 mm (1.7 in)	54 of 100 (Notable)
Chapman Hill	Australia	Record daily precipitation	76.6 mm (3.0 in)	53 of 100 (Notable)
Silver Lake Brighton	United States	Record daily precipitation	37.3 mm (1.5 in)	52 of 100 (Notable)
Jordan	United States	Record daily precipitation	48.3 mm (1.9 in)	51 of 100 (Notable)
Jamestown Muni AP	United States	Record daily precipitation	66.0 mm (2.6 in)	51 of 100 (Notable)
Paul 1ENE	United States	Record daily precipitation	38.1 mm (1.5 in)	50 of 100 (Notable)
Park Rapids Muni AP	United States	Record daily precipitation	43.4 mm (1.7 in)	50 of 100 (Notable)
Mobridge 2NNW	United States	Record daily precipitation	106.9 mm (4.2 in)	49 of 100 (Notable)
Minidoka Dam	United States	Record daily precipitation	29.5 mm (1.2 in)	48 of 100 (Notable)
Montevideo 1SW	United States	Record daily precipitation	59.2 mm (2.3 in)	48 of 100 (Notable)
Sonora	United States	Record daily precipitation	36.8 mm (1.4 in)	48 of 100 (Notable)
Roelands	Australia	Record daily precipitation	58.0 mm (2.3 in)	47 of 100 (Notable)
Brainerd	United States	Record daily precipitation	36.8 mm (1.4 in)	47 of 100 (Notable)
Trenton	United States	Record daily precipitation	59.2 mm (2.3 in)	47 of 100 (Notable)
Vesta	United States	Record daily precipitation	63.0 mm (2.5 in)	45 of 100 (Notable)
Charleroi Lock 4	United States	Record daily precipitation	78.7 mm (3.1 in)	45 of 100 (Notable)
Milan Exp STN	United States	Record daily precipitation	132.1 mm (5.2 in)	45 of 100 (Notable)
Hesston	United States	Record daily precipitation	50.5 mm (2.0 in)	44 of 100 (Notable)
Norwich	United States	Record daily precipitation	79.8 mm (3.1 in)	44 of 100 (Notable)
Danville 2 W	United States	Record daily precipitation	44.7 mm (1.8 in)	44 of 100 (Notable)
Pineview Dam	United States	Record daily precipitation	58.4 mm (2.3 in)	44 of 100 (Notable)
St Cloud Rgnl AP	United States	Record daily precipitation	35.8 mm (1.4 in)	44 of 100 (Notable)
Ft Valley	United States	Record high minimum temperature	6.1 C (43.0 F)	43 of 100 (Notable)
Collegeville St John's	United States	Record daily precipitation	69.9 mm (2.8 in)	43 of 100 (Notable)
Waverly	United States	Record high minimum temperature	17.2 C (63.0 F)	43 of 100 (Notable)
Urbana Wrf	United States	Record high minimum temperature	18.9 C (66.0 F)	43 of 100 (Notable)
Donora 1 SW	United States	Record daily precipitation	52.6 mm (2.1 in)	43 of 100 (Notable)
Hayward Rs	United States	Record high minimum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
Plant City	United States	Record high minimum temperature	22.8 C (73.0 F)	42 of 100 (Notable)
Rison	United States	Record high minimum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Moore Haven Lock 1	United States	Record high minimum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Zortman	United States	Record daily precipitation	64.5 mm (2.5 in)	41 of 100 (Notable)
Minot Exp STN	United States	Record daily precipitation	35.8 mm (1.4 in)	41 of 100 (Notable)
Waverly	United States	Record high minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Buckhannon	United States	Record high minimum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record low minimum temperature	16.1 C (61.0 F)	40 of 100 (Notable)
Massacre Rocks Sp	United States	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Gallatin 1W	United States	Record daily precipitation	69.9 mm (2.8 in)	40 of 100 (Notable)
Mc Clusky	United States	Record daily precipitation	49.0 mm (1.9 in)	40 of 100 (Notable)
Upham 3 N	United States	Record daily precipitation	38.6 mm (1.5 in)	40 of 100 (Notable)
Wessington 2SE	United States	Record daily precipitation	61.0 mm (2.4 in)	40 of 100 (Notable)
Beaumont City	United States	Record high minimum temperature	25.6 C (78.1 F)	40 of 100 (Notable)
Republic	United States	Record high minimum temperature	10.0 C (50.0 F)	40 of 100 (Notable)
Beaconsfield 3N	United States	Record daily precipitation	49.0 mm (1.9 in)	39 of 100 (Notable)
Carroll	United States	Record daily precipitation	27.7 mm (1.1 in)	39 of 100 (Notable)

Counts by Type and Timescale

824 records

Records set or tied on 17 May 2015 by type: Highest daily maximum 78, Lowest daily maximum 93, Highest daily minimum 296, Lowest daily minimum 43, Heaviest daily rainfall 308, Heaviest daily snowfall 3, Deepest snow cover 3.

Records on 17 May 2015 by type
Record type	Records
Highest daily maximum	78
Lowest daily maximum	93
Highest daily minimum	296
Lowest daily minimum	43
Heaviest daily rainfall	308
Heaviest daily snowfall	3
Deepest snow cover	3

Records on 17 May 2015 by timescale: all-time 1, monthly 15, daily 808.

How Much Records Were Beaten By

652 broken records

Margins by which the 652 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 400.0. Ties are not counted.

Top 20 by Significance

17 May 2015

Top 20 records on 17 May 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 2015	Satna, IN	monthly rain	64.0 mm (2.5 in)	30.5 mm (1.2 in)	101 years	90 of 100 (Exceptional)
17 May 2015	Morris W Cntrl Rsch & Outreach, US	daily rain	81.8 mm (3.2 in)	31.0 mm (1.2 in)	122 years	72 of 100 (Major)
17 May 2015	Ashton 1N, US	daily rain	47.0 mm (1.9 in)	29.2 mm (1.1 in)	65 years	69 of 100 (Major)
17 May 2015	Courtenay 1 NW, US	daily rain	74.7 mm (2.9 in)	49.6 mm (2.0 in)	72 years	69 of 100 (Major)
17 May 2015	Blockton 1W, US	daily rain	82.0 mm (3.2 in)	53.3 mm (2.1 in)	68 years	68 of 100 (Major)
17 May 2015	Mudanjiang, CN	daily rain	33.5 mm (1.3 in)	24.0 mm (0.9 in)	60 years	64 of 100 (Major)
17 May 2015	Cape Naturaliste, AU	daily rain	58.2 mm (2.3 in)	20.6 mm (0.8 in)	108 years	63 of 100 (Major)
17 May 2015	Alta, US	daily rain	111.8 mm (4.4 in)	68.4 mm (2.7 in)	44 years	63 of 100 (Major)
17 May 2015	Verescagino, RU	monthly rain	87.9 mm (3.5 in)	37.9 mm (1.5 in)	21 years	61 of 100 (Major)
17 May 2015	Greenfield, US	daily rain	67.3 mm (2.6 in)	36.8 mm (1.4 in)	72 years	59 of 100 (Notable)
17 May 2015	Lamoni, US	daily rain	53.1 mm (2.1 in)	37.9 mm (1.5 in)	68 years	59 of 100 (Notable)
17 May 2015	Hamilton 2W, US	daily rain	127.8 mm (5.0 in)	79.5 mm (3.1 in)	40 years	58 of 100 (Notable)
17 May 2015	Changchun, CN	daily rain	52.3 mm (2.1 in)	42.3 mm (1.7 in)	36 years	57 of 100 (Notable)
17 May 2015	Sumiha, RU	daily rain	39.1 mm (1.5 in)	19.3 mm (0.8 in)	33 years	57 of 100 (Notable)
17 May 2015	Kenmare 1 WSW, US	daily rain	50.8 mm (2.0 in)	37.1 mm (1.5 in)	32 years	57 of 100 (Notable)
17 May 2015	Perry, US	daily rain	43.7 mm (1.7 in)	19.1 mm (0.8 in)	112 years	54 of 100 (Notable)
17 May 2015	Chapman Hill, AU	daily rain	76.6 mm (3.0 in)	44.3 mm (1.7 in)	48 years	53 of 100 (Notable)
17 May 2015	Silver Lake Brighton, US	daily rain	37.3 mm (1.5 in)	16.0 mm (0.6 in)	76 years	52 of 100 (Notable)
17 May 2015	Jordan, US	daily rain	48.3 mm (1.9 in)	23.4 mm (0.9 in)	45 years	51 of 100 (Notable)
17 May 2015	Jamestown Muni AP, US	daily rain	66.0 mm (2.6 in)	50.8 mm (2.0 in)	18 years	51 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

1802 to 2015

Records set or tied on this calendar date in each year from 1802 to 2015. 2015 had 824 records.

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

Records on 05-17 in each year
Year	Records
1802	2
1803	1
1808	1
1816	1
1834	1
1837	1
1839	1
1847	2
1848	1
1851	1
1853	1
1855	1
1858	1
1859	1
1861	2
1862	2
1863	2
1864	1
1871	2
1872	2
1873	2
1874	4
1877	1
1878	1
1879	2
1880	1
1881	1
1882	2
1883	3
1885	1
1887	1
1888	2
1889	3
1891	8
1892	4
1893	3
1895	8
1896	2
1897	3
1898	6
1899	7
1900	12
1901	2
1902	3
1903	9
1904	12
1905	10
1906	22
1907	10
1908	5
1909	33
1910	16
1911	30
1912	16
1913	24
1914	24
1915	53
1916	49
1917	18
1918	56
1919	35
1920	46
1921	50
1922	30
1923	95
1924	80
1925	326
1926	133
1927	264
1928	127
1929	168
1930	421
1931	201
1932	288
1933	365
1934	373
1935	341
1936	270
1937	183
1938	340
1939	285
1940	338
1941	408
1942	589
1943	855
1944	521
1945	799
1946	586
1947	249
1948	412
1949	544
1950	371
1951	373
1952	777
1953	441
1954	298
1955	570
1956	1,166
1957	469
1958	331
1959	488
1960	402
1961	291
1962	1,325
1963	368
1964	417
1965	462
1966	489
1967	644
1968	564
1969	638
1970	711
1971	723
1972	610
1973	1,016
1974	1,302
1975	365
1976	426
1977	1,078
1978	872
1979	459
1980	768
1981	940
1982	476
1983	1,326
1984	925
1985	561
1986	921
1987	1,054
1988	1,096
1989	1,307
1990	1,135
1991	1,237
1992	1,025
1993	495
1994	858
1995	1,734
1996	1,706
1997	1,619
1998	1,080
1999	795
2000	825
2001	960
2002	964
2003	1,127
2004	769
2005	784
2006	1,522
2007	742
2008	1,309
2009	1,050
2010	880
2011	1,483
2012	711
2013	739
2014	1,062
2015	824
2016	741
2017	1,302
2018	726
2019	686
2020	496
2021	443
2022	479
2023	385
2024	566
2025	928
2026	745

Download the Data

Data for records on 2015-05-17: 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	645
50 to 100	6
100 to 150	0
150 to 200	0
200 to 250	0
250 to 300	0
300 to 350	0
350 to 400	1