Weather Records on 17 May 1984

925 weather records were set or tied worldwide on 17 May 1984. Highest significance: Rjukan, NO.

Key Facts for 17 May 1984

On 17 May 1984, 925 weather records were set or tied at long-record stations worldwide.
210 were record highs and 532 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 10 monthly and 914 daily.
Rjukan set a daily record precipitation of 40.0 mm (1.6 in) on 17 May 1984.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 431 records.

Record Map

925 stations

925 station records on 17 May 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rjukan	Norway	Record daily precipitation	40.0 mm (1.6 in)	59 of 100 (Notable)
Zdvinsk	Russia	Record daily precipitation	25.3 mm (1.0 in)	56 of 100 (Notable)
Ubinskoe	Russia	Record daily precipitation	25.0 mm (1.0 in)	55 of 100 (Notable)
Franca	Brazil	Record daily precipitation	56.8 mm (2.2 in)	53 of 100 (Notable)
Salinillas	Mexico	Record daily precipitation	91.9 mm (3.6 in)	46 of 100 (Notable)
Lifjell	Norway	Record daily precipitation	40.7 mm (1.6 in)	45 of 100 (Notable)
Lodi	United States	Record low minimum temperature	1.1 C (34.0 F)	45 of 100 (Notable)
Grandfalls 3SSE	United States	Record daily precipitation	57.2 mm (2.3 in)	45 of 100 (Notable)
Laghouat	Algeria	Record low minimum temperature	1.0 C (33.8 F)	44 of 100 (Notable)
Gijon la Merced	Spain	Record daily precipitation	56.0 mm (2.2 in)	43 of 100 (Notable)
Dutch Harbor	United States	Record low minimum temperature	-4.4 C (24.1 F)	43 of 100 (Notable)
Wink FAA AP	United States	Record daily precipitation	45.0 mm (1.8 in)	43 of 100 (Notable)
Gvarv	Norway	Record daily precipitation	37.4 mm (1.5 in)	42 of 100 (Notable)
Clovis	United States	Record daily precipitation	43.2 mm (1.7 in)	40 of 100 (Notable)
Cavern City AP	United States	Record daily precipitation	25.1 mm (1.0 in)	39 of 100 (Notable)
Bamberg	Germany	Record daily precipitation	27.9 mm (1.1 in)	38 of 100 (Notable)
Barabinsk	Russia	Record daily precipitation	26.5 mm (1.0 in)	38 of 100 (Notable)
Kvikkjokk-Arrenjarka	Sweden	Record high minimum temperature	6.6 C (43.9 F)	38 of 100 (Notable)
St Petersburg	United States	Record low minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Anahuac	Mexico	Record daily precipitation	68.8 mm (2.7 in)	37 of 100 (Notable)
Shelbyville 1 E	United States	Record low minimum temperature	0.0 C (32.0 F)	37 of 100 (Notable)
Crossroads 2	United States	Record daily precipitation	52.6 mm (2.1 in)	37 of 100 (Notable)
Lumberton	United States	Record low minimum temperature	1.1 C (34.0 F)	37 of 100 (Notable)
Gaoua	Burkina Faso	Record daily precipitation	57.9 mm (2.3 in)	37 of 100 (Notable)
St. Petersburg	Russia	Record high maximum temperature	30.4 C (86.7 F)	36 of 100 (Notable)
Peterboro 2 S	United States	Record low minimum temperature	-3.3 C (26.1 F)	36 of 100 (Notable)
Gagnoa	Cote D'Ivoire	Record daily precipitation	67.1 mm (2.6 in)	35 of 100 (Notable)
Rauland	Norway	Record daily precipitation	25.1 mm (1.0 in)	35 of 100 (Notable)
Tuddal	Norway	Record daily precipitation	33.1 mm (1.3 in)	35 of 100 (Notable)
Brunswick	United States	Record low minimum temperature	11.1 C (52.0 F)	35 of 100 (Notable)
Kearney 4 NE	United States	Record high minimum temperature	17.2 C (63.0 F)	34 of 100 (Routine)
Langdon Exp Farm	United States	Record high maximum temperature	31.1 C (88.0 F)	34 of 100 (Routine)
Madison 3NNW	United States	Record low minimum temperature	0.6 C (33.1 F)	34 of 100 (Routine)
Kooskia	United States	Record high minimum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Ada	United States	Record high minimum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Grenora	United States	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Inverness 3 SE	United States	Record low minimum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Oakland 1 SE	United States	Record low minimum temperature	-4.4 C (24.1 F)	32 of 100 (Routine)
Jal	United States	Record daily precipitation	31.0 mm (1.2 in)	32 of 100 (Routine)
Elmira	United States	Record low maximum temperature	9.4 C (48.9 F)	32 of 100 (Routine)
Loop	United States	Record daily precipitation	63.5 mm (2.5 in)	32 of 100 (Routine)
Williamson	United States	Record low minimum temperature	1.7 C (35.1 F)	32 of 100 (Routine)
Giralia	Australia	Record daily precipitation	54.0 mm (2.1 in)	31 of 100 (Routine)
Westcliffe	United States	Record high minimum temperature	9.4 C (48.9 F)	31 of 100 (Routine)
Booneville	United States	Record low minimum temperature	6.7 C (44.1 F)	31 of 100 (Routine)
Arcadia	United States	Record low minimum temperature	0.0 C (32.0 F)	31 of 100 (Routine)
Fayetteville (Pwc)	United States	Record low minimum temperature	4.4 C (39.9 F)	31 of 100 (Routine)
Kinston 7 SE	United States	Record low minimum temperature	1.7 C (35.1 F)	31 of 100 (Routine)
Franklin Sewage Plt	United States	Record low minimum temperature	2.8 C (37.0 F)	31 of 100 (Routine)
Parsons 3 SE	United States	Record low minimum temperature	-2.2 C (28.0 F)	31 of 100 (Routine)
Heyuan	China	Record daily precipitation	145.2 mm (5.7 in)	30 of 100 (Routine)
Karasjok	Norway	Record high minimum temperature	9.2 C (48.6 F)	30 of 100 (Routine)
Calarasi	Romania	Record high minimum temperature	18.6 C (65.5 F)	30 of 100 (Routine)
Cerlak	Russia	Record daily precipitation	38.7 mm (1.5 in)	30 of 100 (Routine)
Waynesville 1 E	United States	Record low minimum temperature	-1.7 C (28.9 F)	30 of 100 (Routine)
Laurens	United States	Record low minimum temperature	2.8 C (37.0 F)	30 of 100 (Routine)
Koumac (Nlle-Caledo	New Caledonia [France]	Record daily precipitation	432.0 mm (17.0 in)	29 of 100 (Routine)
Odesskoe	Russia	Record daily precipitation	28.1 mm (1.1 in)	29 of 100 (Routine)
Albemarle	United States	Record low minimum temperature	2.2 C (36.0 F)	29 of 100 (Routine)
Monroe 2 SE	United States	Record low minimum temperature	3.3 C (37.9 F)	29 of 100 (Routine)

Counts by Type and Timescale

925 records

Records set or tied on 17 May 1984 by type: Highest daily maximum 93, Lowest daily maximum 164, Highest daily minimum 117, Lowest daily minimum 368, Heaviest daily rainfall 180, Heaviest daily snowfall 2, Deepest snow cover 1.

Records on 17 May 1984 by type
Record type	Records
Highest daily maximum	93
Lowest daily maximum	164
Highest daily minimum	117
Lowest daily minimum	368
Heaviest daily rainfall	180
Heaviest daily snowfall	2
Deepest snow cover	1

Records on 17 May 1984 by timescale: all-time 1, monthly 10, daily 914.

How Much Records Were Beaten By

714 broken records

Margins by which the 714 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 354.0. Ties are not counted.

Top 20 by Significance

17 May 1984

Top 20 records on 17 May 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1984	Rjukan, NO	daily rain	40.0 mm (1.6 in)	23.0 mm (0.9 in)	57 years	59 of 100 (Notable)
17 May 1984	Zdvinsk, RU	daily rain	25.3 mm (1.0 in)	15.0 mm (0.6 in)	41 years	56 of 100 (Notable)
17 May 1984	Ubinskoe, RU	daily rain	25.0 mm (1.0 in)	13.0 mm (0.5 in)	41 years	55 of 100 (Notable)
17 May 1984	Franca, BR	daily rain	56.8 mm (2.2 in)	41.8 mm (1.6 in)	46 years	53 of 100 (Notable)
17 May 1984	Salinillas, MX	daily rain	91.9 mm (3.6 in)	64.0 mm (2.5 in)	12 years	46 of 100 (Notable)
17 May 1984	Lifjell, NO	daily rain	40.7 mm (1.6 in)	13.3 mm (0.5 in)	57 years	45 of 100 (Notable)
17 May 1984	Lodi, US	daily low min	1.1 C (34.0 F)	2.8 C (5.0 F)	87 years	45 of 100 (Notable)
17 May 1984	Grandfalls 3SSE, US	daily rain	57.2 mm (2.3 in)	43.0 mm (1.7 in)	15 years	45 of 100 (Notable)
17 May 1984	Laghouat, DZ	daily low min	1.0 C (33.8 F)	3.0 C (5.4 F)	91 years	44 of 100 (Notable)
17 May 1984	Gijon la Merced, ES	daily rain	56.0 mm (2.2 in)	32.2 mm (1.3 in)	7 years	43 of 100 (Notable)
17 May 1984	Dutch Harbor, US	daily low min	-4.4 C (24.1 F)	3.3 C (5.9 F)	68 years	43 of 100 (Notable)
17 May 1984	Wink FAA AP, US	daily rain	45.0 mm (1.8 in)	32.6 mm (1.3 in)	10 years	43 of 100 (Notable)
17 May 1984	Gvarv, NO	monthly rain	37.4 mm (1.5 in)	4.6 mm (0.18 in)	61 years	42 of 100 (Notable)
17 May 1984	Clovis, US	daily rain	43.2 mm (1.7 in)	22.1 mm (0.9 in)	49 years	40 of 100 (Notable)
17 May 1984	Cavern City AP, US	daily rain	25.1 mm (1.0 in)	21.8 mm (0.9 in)	10 years	39 of 100 (Notable)
17 May 1984	Bamberg, DE	daily rain	27.9 mm (1.1 in)	10.7 mm (0.4 in)	28 years	38 of 100 (Notable)
17 May 1984	Barabinsk, RU	monthly rain	26.5 mm (1.0 in)	1.9 mm (0.07 in)	50 years	38 of 100 (Notable)
17 May 1984	Kvikkjokk-Arrenjarka, SE	daily high min	6.6 C (43.9 F)	0.6 C (1.1 F)	93 years	38 of 100 (Notable)
17 May 1984	St Petersburg, US	daily low min	16.7 C (62.1 F)	0.5 C (0.9 F)	90 years	38 of 100 (Notable)
17 May 1984	Anahuac, MX	daily rain	68.8 mm (2.7 in)	45.9 mm (1.8 in)	19 years	37 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 1984

Records set or tied on this calendar date in each year from 1802 to 1984. 1984 had 925 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 1984-05-17: 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	710
50 to 100	2
100 to 150	0
150 to 200	0
200 to 250	1
250 to 300	0
300 to 350	0
350 to 400	1