Weather Records on 18 June 1991

944 weather records were set or tied worldwide on 18 June 1991. Highest significance: Harnosand, SE.

Key Facts for 18 June 1991

On 18 June 1991, 944 weather records were set or tied at long-record stations worldwide.
273 were record highs and 171 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 22 monthly and 915 daily.
Harnosand set a daily record precipitation of 41.3 mm (1.6 in) on 18 June 1991.
Across 162 earlier years (1800 to 2026) the same calendar date averaged 433 records.

Record Map

944 stations

944 station records on 18 June 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 June 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Harnosand	Sweden	Record daily precipitation	41.3 mm (1.6 in)	78 of 100 (Major)
Thurlga	Australia	Record daily precipitation	40.6 mm (1.6 in)	71 of 100 (Major)
Wedgefield	United States	Record daily precipitation	69.3 mm (2.7 in)	65 of 100 (Major)
Orskar_A	Sweden	Record daily precipitation	35.1 mm (1.4 in)	64 of 100 (Major)
Malung	Sweden	Record daily precipitation	39.2 mm (1.5 in)	60 of 100 (Major)
Moorestown 4 E	United States	Record daily precipitation	60.2 mm (2.4 in)	58 of 100 (Notable)
Port Augusta (Carriewerloo STN	Australia	Record daily precipitation	32.0 mm (1.3 in)	57 of 100 (Notable)
Flahult	Sweden	Record daily precipitation	35.6 mm (1.4 in)	56 of 100 (Notable)
Nassjo	Sweden	Record daily precipitation	25.9 mm (1.0 in)	55 of 100 (Notable)
Gustavsfors	Sweden	Record daily precipitation	49.8 mm (2.0 in)	55 of 100 (Notable)
Hofors	Sweden	Record daily precipitation	34.1 mm (1.3 in)	55 of 100 (Notable)
Oje_D	Sweden	Record daily precipitation	39.6 mm (1.6 in)	54 of 100 (Notable)
Ajaguz	Kazakhstan	Record daily precipitation	64.2 mm (2.5 in)	53 of 100 (Notable)
Petropavlovsk-Kamchatskij	Russia	Record daily precipitation	34.2 mm (1.3 in)	53 of 100 (Notable)
Frykfors	Sweden	Record daily precipitation	35.4 mm (1.4 in)	53 of 100 (Notable)
Norrsundet	Sweden	Record daily precipitation	39.7 mm (1.6 in)	53 of 100 (Notable)
Grundforsen	Sweden	Record daily precipitation	36.6 mm (1.4 in)	53 of 100 (Notable)
Djursatra	Sweden	Record daily precipitation	41.4 mm (1.6 in)	52 of 100 (Notable)
Kristinehamn	Sweden	Record daily precipitation	34.0 mm (1.3 in)	51 of 100 (Notable)
On	Sweden	Record daily precipitation	29.7 mm (1.2 in)	51 of 100 (Notable)
Flotningen	Sweden	Record daily precipitation	35.0 mm (1.4 in)	51 of 100 (Notable)
Odeshog	Sweden	Record daily precipitation	43.9 mm (1.7 in)	50 of 100 (Notable)
Mariestad	Sweden	Record daily precipitation	32.0 mm (1.3 in)	50 of 100 (Notable)
Sarna	Sweden	Record daily precipitation	29.3 mm (1.2 in)	50 of 100 (Notable)
Malheur Refuge HQ	United States	Record daily precipitation	38.1 mm (1.5 in)	50 of 100 (Notable)
Semjachik	Russia	Record daily precipitation	55.9 mm (2.2 in)	49 of 100 (Notable)
Forserum	Sweden	Record daily precipitation	33.8 mm (1.3 in)	49 of 100 (Notable)
Malexander	Sweden	Record daily precipitation	28.8 mm (1.1 in)	49 of 100 (Notable)
Huskvarna	Sweden	Record daily precipitation	29.5 mm (1.2 in)	48 of 100 (Notable)
Norrveda	Sweden	Record daily precipitation	31.0 mm (1.2 in)	48 of 100 (Notable)
Transtrand_D	Sweden	Record daily precipitation	42.8 mm (1.7 in)	48 of 100 (Notable)
Sidsjo	Sweden	Record daily precipitation	43.8 mm (1.7 in)	48 of 100 (Notable)
Warrenton 3 SE	United States	Record daily precipitation	66.0 mm (2.6 in)	48 of 100 (Notable)
Lovaker	Sweden	Record daily precipitation	35.0 mm (1.4 in)	47 of 100 (Notable)
Woodstown Pittsgrov 4E	United States	Record daily precipitation	84.1 mm (3.3 in)	47 of 100 (Notable)
Grythyttan	Sweden	Record daily precipitation	37.5 mm (1.5 in)	46 of 100 (Notable)
Soderhamn A	Sweden	Record daily precipitation	41.2 mm (1.6 in)	46 of 100 (Notable)
Wilmington Porter Rsch	United States	Record daily precipitation	93.7 mm (3.7 in)	46 of 100 (Notable)
Vallentuna	Sweden	Record daily precipitation	27.0 mm (1.1 in)	45 of 100 (Notable)
Bergvik	Sweden	Record daily precipitation	36.0 mm (1.4 in)	45 of 100 (Notable)
Mombasa	Kenya	Record daily precipitation	68.6 mm (2.7 in)	44 of 100 (Notable)
Ramsjoholm	Sweden	Record daily precipitation	31.2 mm (1.2 in)	44 of 100 (Notable)
Orebro	Sweden	Record daily precipitation	29.1 mm (1.1 in)	44 of 100 (Notable)
Osterby	Sweden	Record daily precipitation	40.0 mm (1.6 in)	44 of 100 (Notable)
Hudiksvall	Sweden	Record daily precipitation	34.0 mm (1.3 in)	44 of 100 (Notable)
Scottsboro	United States	Record daily precipitation	30.5 mm (1.2 in)	44 of 100 (Notable)
Kokpekty	Kazakhstan	Record high minimum temperature	20.8 C (69.4 F)	43 of 100 (Notable)
Prastkulla	Sweden	Record daily precipitation	28.1 mm (1.1 in)	43 of 100 (Notable)
Ostana	Sweden	Record daily precipitation	35.0 mm (1.4 in)	43 of 100 (Notable)
Lovsta	Sweden	Record daily precipitation	35.0 mm (1.4 in)	43 of 100 (Notable)
Tasan	Sweden	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Branas	Sweden	Record daily precipitation	36.0 mm (1.4 in)	43 of 100 (Notable)
Malmagen	Sweden	Record daily precipitation	28.9 mm (1.1 in)	43 of 100 (Notable)
Anniston Metro AP	United States	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)
Jonkopings_Flygplats	Sweden	Record daily precipitation	33.9 mm (1.3 in)	42 of 100 (Notable)
Svinhult_D	Sweden	Record daily precipitation	28.0 mm (1.1 in)	42 of 100 (Notable)
Lisskogsasen	Sweden	Record daily precipitation	47.6 mm (1.9 in)	42 of 100 (Notable)
Korsa	Sweden	Record daily precipitation	29.5 mm (1.2 in)	42 of 100 (Notable)
Mwanza	Tanzania	Record daily precipitation	173.0 mm (6.8 in)	42 of 100 (Notable)
Newark Ag Farm	United States	Record daily precipitation	39.6 mm (1.6 in)	42 of 100 (Notable)

Counts by Type and Timescale

944 records

Records set or tied on 18 June 1991 by type: Highest daily maximum 103, Lowest daily maximum 55, Highest daily minimum 170, Lowest daily minimum 116, Heaviest daily rainfall 500.

Records on 18 June 1991 by type
Record type	Records
Highest daily maximum	103
Lowest daily maximum	55
Highest daily minimum	170
Lowest daily minimum	116
Heaviest daily rainfall	500
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 June 1991 by timescale: all-time 7, monthly 22, daily 915.

How Much Records Were Beaten By

787 broken records

Margins by which the 787 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 54.6. Ties are not counted.

Top 20 by Significance

18 June 1991

Top 20 records on 18 June 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 June 1991	Harnosand, SE	daily rain	41.3 mm (1.6 in)	24.0 mm (0.9 in)	100 years	78 of 100 (Major)
18 June 1991	Thurlga, AU	daily rain	40.6 mm (1.6 in)	32.2 mm (1.3 in)	76 years	71 of 100 (Major)
18 June 1991	Wedgefield, US	daily rain	69.3 mm (2.7 in)	54.6 mm (2.1 in)	64 years	65 of 100 (Major)
18 June 1991	Orskar_A, SE	daily rain	35.1 mm (1.4 in)	17.3 mm (0.7 in)	68 years	64 of 100 (Major)
18 June 1991	Malung, SE	daily rain	39.2 mm (1.5 in)	19.8 mm (0.8 in)	64 years	60 of 100 (Major)
18 June 1991	Moorestown 4 E, US	daily rain	60.2 mm (2.4 in)	28.4 mm (1.1 in)	84 years	58 of 100 (Notable)
18 June 1991	Port Augusta (Carriewerloo STN, AU	daily rain	32.0 mm (1.3 in)	16.3 mm (0.6 in)	72 years	57 of 100 (Notable)
18 June 1991	Flahult, SE	daily rain	35.6 mm (1.4 in)	24.6 mm (1.0 in)	38 years	56 of 100 (Notable)
18 June 1991	Nassjo, SE	daily rain	25.9 mm (1.0 in)	20.9 mm (0.8 in)	44 years	55 of 100 (Notable)
18 June 1991	Gustavsfors, SE	daily rain	49.8 mm (2.0 in)	32.6 mm (1.3 in)	38 years	55 of 100 (Notable)
18 June 1991	Hofors, SE	daily rain	34.1 mm (1.3 in)	26.6 mm (1.0 in)	37 years	55 of 100 (Notable)
18 June 1991	Oje_D, SE	daily rain	39.6 mm (1.6 in)	25.9 mm (1.0 in)	38 years	54 of 100 (Notable)
18 June 1991	Ajaguz, KZ	all-time rain	64.2 mm (2.5 in)	10.9 mm (0.4 in)	20 years	53 of 100 (Notable)
18 June 1991	Petropavlovsk-Kamchatskij, RU	daily rain	34.2 mm (1.3 in)	12.2 mm (0.5 in)	94 years	53 of 100 (Notable)
18 June 1991	Frykfors, SE	daily rain	35.4 mm (1.4 in)	22.9 mm (0.9 in)	38 years	53 of 100 (Notable)
18 June 1991	Norrsundet, SE	daily rain	39.7 mm (1.6 in)	28.7 mm (1.1 in)	32 years	53 of 100 (Notable)
18 June 1991	Grundforsen, SE	daily rain	36.6 mm (1.4 in)	23.9 mm (0.9 in)	37 years	53 of 100 (Notable)
18 June 1991	Djursatra, SE	daily rain	41.4 mm (1.6 in)	35.9 mm (1.4 in)	32 years	52 of 100 (Notable)
18 June 1991	Kristinehamn, SE	daily rain	34.0 mm (1.3 in)	20.9 mm (0.8 in)	32 years	51 of 100 (Notable)
18 June 1991	On, SE	daily rain	29.7 mm (1.2 in)	24.6 mm (1.0 in)	28 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

1800 to 1991

Records set or tied on this calendar date in each year from 1800 to 1991. 1991 had 944 records.

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

Records on 06-18 in each year
Year	Records
1800	1
1801	1
1802	1
1803	1
1816	1
1821	1
1823	1
1839	1
1841	1
1848	1
1855	1
1858	2
1859	1
1862	2
1865	1
1869	1
1870	1
1875	2
1876	1
1879	1
1880	1
1881	2
1882	2
1883	1
1884	1
1886	1
1888	3
1889	1
1890	3
1892	3
1893	1
1894	2
1895	3
1896	4
1897	5
1899	3
1900	4
1901	10
1902	7
1903	13
1904	5
1905	32
1906	16
1907	21
1908	20
1909	39
1910	15
1911	14
1912	25
1913	29
1914	43
1915	62
1916	29
1917	55
1918	118
1919	65
1920	53
1921	44
1922	57
1923	144
1924	108
1925	246
1926	176
1927	287
1928	205
1929	297
1930	379
1931	267
1932	219
1933	499
1934	335
1935	494
1936	549
1937	301
1938	391
1939	674
1940	620
1941	273
1942	201
1943	173
1944	726
1945	784
1946	532
1947	391
1948	421
1949	734
1950	828
1951	237
1952	435
1953	730
1954	460
1955	721
1956	373
1957	672
1958	532
1959	573
1960	394
1961	979
1962	302
1963	305
1964	840
1965	589
1966	431
1967	308
1968	556
1969	598
1970	486
1971	456
1972	334
1973	861
1974	719
1975	821
1976	508
1977	768
1978	516
1979	581
1980	447
1981	895
1982	736
1983	1,080
1984	716
1985	921
1986	862
1987	925
1988	748
1989	697
1990	795
1991	944
1992	579
1993	834
1994	1,156
1995	1,224
1996	1,004
1997	894
1998	1,600
1999	1,258
2000	1,474
2001	589
2002	1,397
2003	853
2004	1,056
2005	1,014
2006	699
2007	898
2008	628
2009	920
2010	928
2011	952
2012	832
2013	847
2014	732
2015	978
2016	787
2017	839
2018	968
2019	425
2020	572
2021	1,874
2022	1,194
2023	574
2024	1,150
2025	583
2026	830

Download the Data

Data for records on 1991-06-18: 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	583
10 to 20	141
20 to 30	49
30 to 40	9
40 to 50	4
50 to 60	1