Weather Records on 17 May 2018

726 weather records were set or tied worldwide on 17 May 2018. Highest significance: Jackson, US.

Key Facts for 17 May 2018

On 17 May 2018, 726 weather records were set or tied at long-record stations worldwide.
504 were record highs and 63 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 709 daily.
Jackson set a daily record precipitation of 71.1 mm (2.8 in) on 17 May 2018.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 433 records.

Record Map

726 stations

726 station records on 17 May 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jackson	United States	Record daily precipitation	71.1 mm (2.8 in)	58 of 100 (Notable)
Roanoke-Blacksburg Rgnl AP	United States	Record daily precipitation	68.8 mm (2.7 in)	58 of 100 (Notable)
Warsaw 2 NW	United States	Record daily precipitation	50.8 mm (2.0 in)	56 of 100 (Notable)
Lakeland Linder Rgnl AP	United States	Record daily precipitation	105.2 mm (4.1 in)	54 of 100 (Notable)
Sholapur	India	Record daily precipitation	55.1 mm (2.2 in)	51 of 100 (Notable)
Two Harbors	United States	Record high maximum temperature	31.7 C (89.1 F)	50 of 100 (Notable)
Henderson 2 NNW	United States	Record daily precipitation	36.3 mm (1.4 in)	47 of 100 (Notable)
Winterpock	United States	Record daily precipitation	52.6 mm (2.1 in)	47 of 100 (Notable)
Oceana NAS	United States	Record daily precipitation	59.9 mm (2.4 in)	47 of 100 (Notable)
Port Gibson 1 NE	United States	Record high maximum temperature	36.1 C (97.0 F)	45 of 100 (Notable)
Moulton 2	United States	Record daily precipitation	91.2 mm (3.6 in)	44 of 100 (Notable)
Bhubaneswar	India	Record daily precipitation	43.9 mm (1.7 in)	43 of 100 (Notable)
Inhambane	Mozambique	Record low minimum temperature	12.0 C (53.6 F)	43 of 100 (Notable)
Winchester 7 SE	United States	Record daily precipitation	58.4 mm (2.3 in)	43 of 100 (Notable)
New Orleans Audubon	United States	Record high maximum temperature	36.1 C (97.0 F)	43 of 100 (Notable)
Toccoa	United States	Record daily precipitation	66.3 mm (2.6 in)	42 of 100 (Notable)
Oelrichs	United States	Record daily precipitation	54.1 mm (2.1 in)	42 of 100 (Notable)
Glenville	United States	Record high minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Parsons 3 SE	United States	Record high minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Liberec	Czech Republic	Record daily precipitation	34.8 mm (1.4 in)	41 of 100 (Notable)
Alexandria	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
The Dalles	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Lexington	United States	Record high minimum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Everett	United States	Record high minimum temperature	13.9 C (57.0 F)	41 of 100 (Notable)
Lewisburg 3 N	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Joutsa Leivonmaki Savenaho	Finland	Record daily precipitation	34.4 mm (1.4 in)	40 of 100 (Notable)
Shinjo	Japan	Record daily precipitation	48.0 mm (1.9 in)	40 of 100 (Notable)
Enka	United States	Record daily precipitation	36.3 mm (1.4 in)	40 of 100 (Notable)
Walhalla	United States	Record daily precipitation	74.2 mm (2.9 in)	40 of 100 (Notable)
Izuhara	Japan	Record high minimum temperature	22.6 C (72.7 F)	39 of 100 (Notable)
Hendersonville 1 NE	United States	Record daily precipitation	76.2 mm (3.0 in)	39 of 100 (Notable)
Transou	United States	Record daily precipitation	90.7 mm (3.6 in)	39 of 100 (Notable)
Imnaviat Creek	United States	Record daily precipitation	27.9 mm (1.1 in)	39 of 100 (Notable)
Richmond Intl AP	United States	Record daily precipitation	67.8 mm (2.7 in)	39 of 100 (Notable)
Incheon	Korea, South	Record daily precipitation	50.0 mm (2.0 in)	38 of 100 (Notable)
Montezuma 2 NW	United States	Record daily precipitation	40.1 mm (1.6 in)	38 of 100 (Notable)
Potlatch 3 NNE	United States	Record high minimum temperature	11.1 C (52.0 F)	38 of 100 (Notable)
Hot Springs	United States	Record high minimum temperature	16.1 C (61.0 F)	38 of 100 (Notable)
Port Arthur SE Tx Rgnl AP	United States	Record high maximum temperature	35.6 C (96.1 F)	38 of 100 (Notable)
Lake Margaret Power Station	Australia	Record daily precipitation	62.8 mm (2.5 in)	37 of 100 (Notable)
Chadron 3SW	United States	Record high minimum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Freehold-Marlboro	United States	Record daily precipitation	39.4 mm (1.6 in)	37 of 100 (Notable)
Brevard	United States	Record daily precipitation	68.6 mm (2.7 in)	37 of 100 (Notable)
Three Lynx	United States	Record high minimum temperature	11.1 C (52.0 F)	37 of 100 (Notable)
Chewelah	United States	Record high minimum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Vihti Hiiskula	Finland	Record daily precipitation	29.3 mm (1.2 in)	36 of 100 (Notable)
Emmitsburg 2 SE	United States	Record daily precipitation	42.2 mm (1.7 in)	36 of 100 (Notable)
Jefferson 2 E	United States	Record daily precipitation	71.1 mm (2.8 in)	36 of 100 (Notable)
Woodstock 2 NE	United States	Record daily precipitation	55.9 mm (2.2 in)	36 of 100 (Notable)
Tottori	Japan	Record high minimum temperature	23.5 C (74.3 F)	35 of 100 (Notable)
Makurazaki	Japan	Record high minimum temperature	23.8 C (74.8 F)	35 of 100 (Notable)
Fukue	Japan	Record high minimum temperature	22.4 C (72.3 F)	35 of 100 (Notable)
Tuscaloosa Oliver Dam	United States	Record daily precipitation	51.3 mm (2.0 in)	35 of 100 (Notable)
Upper Wheeler	United States	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Maebashi	Japan	Record high minimum temperature	20.3 C (68.5 F)	34 of 100 (Routine)
Omaezaki	Japan	Record high minimum temperature	19.6 C (67.3 F)	34 of 100 (Routine)
Bjoernoeya	Norway	Record high minimum temperature	3.6 C (38.5 F)	34 of 100 (Routine)
Cairo 1SW	United States	Record high minimum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Hartwell	United States	Record daily precipitation	34.3 mm (1.4 in)	34 of 100 (Routine)
Nixon	United States	Record high maximum temperature	36.1 C (97.0 F)	34 of 100 (Routine)

Counts by Type and Timescale

726 records

Records set or tied on 17 May 2018 by type: Highest daily maximum 181, Lowest daily maximum 33, Highest daily minimum 323, Lowest daily minimum 30, Heaviest daily rainfall 159.

Records on 17 May 2018 by type
Record type	Records
Highest daily maximum	181
Lowest daily maximum	33
Highest daily minimum	323
Lowest daily minimum	30
Heaviest daily rainfall	159
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 May 2018 by timescale: all-time 0, monthly 17, daily 709.

How Much Records Were Beaten By

562 broken records

Margins by which the 562 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 64.6. Ties are not counted.

Top 20 by Significance

17 May 2018

Top 20 records on 17 May 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 2018	Jackson, US	daily rain	71.1 mm (2.8 in)	48.2 mm (1.9 in)	43 years	58 of 100 (Notable)
17 May 2018	Roanoke-Blacksburg Rgnl AP, US	daily rain	68.8 mm (2.7 in)	38.1 mm (1.5 in)	55 years	58 of 100 (Notable)
17 May 2018	Warsaw 2 NW, US	daily rain	50.8 mm (2.0 in)	20.3 mm (0.8 in)	111 years	56 of 100 (Notable)
17 May 2018	Lakeland Linder Rgnl AP, US	daily rain	105.2 mm (4.1 in)	64.6 mm (2.5 in)	27 years	54 of 100 (Notable)
17 May 2018	Sholapur, IN	daily rain	55.1 mm (2.2 in)	32.5 mm (1.3 in)	36 years	51 of 100 (Notable)
17 May 2018	Two Harbors, US	daily high max	31.7 C (89.1 F)	5.6 C (10.1 F)	120 years	50 of 100 (Notable)
17 May 2018	Henderson 2 NNW, US	daily rain	36.3 mm (1.4 in)	10.6 mm (0.4 in)	96 years	47 of 100 (Notable)
17 May 2018	Winterpock, US	daily rain	52.6 mm (2.1 in)	39.4 mm (1.6 in)	35 years	47 of 100 (Notable)
17 May 2018	Oceana NAS, US	daily rain	59.9 mm (2.4 in)	30.7 mm (1.2 in)	41 years	47 of 100 (Notable)
17 May 2018	Port Gibson 1 NE, US	daily high max	36.1 C (97.0 F)	1.7 C (3.1 F)	116 years	45 of 100 (Notable)
17 May 2018	Moulton 2, US	daily rain	91.2 mm (3.6 in)	46.7 mm (1.8 in)	37 years	44 of 100 (Notable)
17 May 2018	Bhubaneswar, IN	daily rain	43.9 mm (1.7 in)	33.2 mm (1.3 in)	77 years	43 of 100 (Notable)
17 May 2018	Inhambane, MZ	daily low min	12.0 C (53.6 F)	4.0 C (7.2 F)	52 years	43 of 100 (Notable)
17 May 2018	Winchester 7 SE, US	daily rain	58.4 mm (2.3 in)	24.6 mm (1.0 in)	35 years	43 of 100 (Notable)
17 May 2018	New Orleans Audubon, US	daily high max	36.1 C (97.0 F)	2.2 C (4.0 F)	84 years	43 of 100 (Notable)
17 May 2018	Toccoa, US	daily rain	66.3 mm (2.6 in)	36.6 mm (1.4 in)	27 years	42 of 100 (Notable)
17 May 2018	Oelrichs, US	daily rain	54.1 mm (2.1 in)	16.8 mm (0.7 in)	63 years	42 of 100 (Notable)
17 May 2018	Glenville, US	daily high min	17.8 C (64.0 F)	1.1 C (2.0 F)	123 years	42 of 100 (Notable)
17 May 2018	Parsons 3 SE, US	daily high min	16.7 C (62.1 F)	1.1 C (2.0 F)	118 years	42 of 100 (Notable)
17 May 2018	Liberec, CZ	daily rain	34.8 mm (1.4 in)	22.1 mm (0.9 in)	12 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

1802 to 2018

Records set or tied on this calendar date in each year from 1802 to 2018. 2018 had 726 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 2018-05-17: 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 10	505
10 to 20	26
20 to 30	17
30 to 40	11
40 to 50	2
50 to 60	0
60 to 70	1