Weather Records on 18 June 1921

44 weather records were set or tied worldwide on 18 June 1921. Highest significance: Uppsala_Aut, SE.

Key Facts for 18 June 1921

On 18 June 1921, 44 weather records were set or tied at long-record stations worldwide.
23 were record highs and 9 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 44 daily.
Uppsala_Aut set a daily record precipitation of 30.0 mm (1.2 in) on 18 June 1921.
Across 162 earlier years (1800 to 2026) the same calendar date averaged 439 records.

Record Map

44 stations

44 station records on 18 June 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 June 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Uppsala_Aut	Sweden	Record daily precipitation	30.0 mm (1.2 in)	65 of 100 (Major)
Shenkursk	Russia	Record daily precipitation	30.9 mm (1.2 in)	40 of 100 (Notable)
Morgantown 1	United States	Record daily precipitation	48.3 mm (1.9 in)	30 of 100 (Routine)
Astoria	United States	Record daily precipitation	32.3 mm (1.3 in)	29 of 100 (Routine)
Madison Wb City	United States	Record high minimum temperature	23.9 C (75.0 F)	21 of 100 (Routine)
Constantine	Algeria	Record daily precipitation	6.6 mm (0.26 in)	20 of 100 (Routine)
Gysinge	Sweden	Record daily precipitation	21.4 mm (0.8 in)	20 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record daily precipitation	15.0 mm (0.6 in)	19 of 100 (Routine)
Huron Rgnl AP	United States	Record high minimum temperature	21.1 C (70.0 F)	17 of 100 (Routine)
Brandon Cda	Canada	Record high minimum temperature	17.2 C (63.0 F)	15 of 100 (Routine)
Weldon	United States	Record high maximum temperature	36.7 C (98.1 F)	15 of 100 (Routine)
Dubuque River	United States	Record high minimum temperature	23.3 C (73.9 F)	15 of 100 (Routine)
Portland Rfc City	United States	Record daily precipitation	13.7 mm (0.5 in)	15 of 100 (Routine)
Qu'appelle	Canada	Record high minimum temperature	16.1 C (61.0 F)	14 of 100 (Routine)
Svenska Hogarna	Sweden	Record daily precipitation	16.6 mm (0.7 in)	14 of 100 (Routine)
Gainesville UNIV of Fl	United States	Record high maximum temperature	37.8 C (100.0 F)	13 of 100 (Routine)
Tashkent	Uzbekistan	Record low maximum temperature	25.1 C (77.2 F)	13 of 100 (Routine)
Jakutsk	Russia	Record high minimum temperature	15.6 C (60.1 F)	11 of 100 (Routine)
Enisejsk	Russia	Record daily precipitation	3.6 mm (0.14 in)	11 of 100 (Routine)
Crookston NW Exp STN	United States	Record high minimum temperature	18.9 C (66.0 F)	11 of 100 (Routine)
Prince Albert	Canada	Record high minimum temperature	16.7 C (62.1 F)	10 of 100 (Routine)
Franklin	United States	Record high minimum temperature	20.0 C (68.0 F)	10 of 100 (Routine)
Darwin Post Office	Australia	Record high minimum temperature	24.3 C (75.7 F)	8 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record low maximum temperature	14.0 C (57.2 F)	7 of 100 (Routine)
Minneapolis Wb Dwtn	United States	Record high minimum temperature	22.2 C (72.0 F)	7 of 100 (Routine)
Rowlesburg 1	United States	Record daily precipitation	34.3 mm (1.4 in)	6 of 100 (Routine)
Cottbus	Germany	Record low maximum temperature	15.4 C (59.7 F)	5 of 100 (Routine)
Skara 1	Sweden	Record low maximum temperature	13.0 C (55.4 F)	5 of 100 (Routine)
Green Bay	United States	Record high minimum temperature	21.1 C (70.0 F)	5 of 100 (Routine)
Cherdyn'	Russia	Record daily precipitation	6.6 mm (0.26 in)	4 of 100 (Routine)
Montgomery Wb City	United States	Record high minimum temperature	24.4 C (75.9 F)	4 of 100 (Routine)
Mena	United States	Record high maximum temperature	36.7 C (98.1 F)	4 of 100 (Routine)
Minnedosa	Canada	Record high minimum temperature	16.1 C (61.0 F)	3 of 100 (Routine)
Milwaukee Wb City	United States	Record high maximum temperature	33.3 C (91.9 F)	3 of 100 (Routine)
White River	Canada	Record high minimum temperature	15.6 C (60.1 F)	2 of 100 (Routine)
Nicosia	Cyprus	Record low maximum temperature	29.4 C (84.9 F)	2 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record low maximum temperature	9.0 C (48.2 F)	2 of 100 (Routine)
Columbia Wb City	United States	Record high minimum temperature	22.2 C (72.0 F)	2 of 100 (Routine)
Indian Head Cda	Canada	Record high minimum temperature	15.6 C (60.1 F)	1 of 100 (Routine)
Berlin-Dahlem	Germany	Record low maximum temperature	15.1 C (59.2 F)	1 of 100 (Routine)
Needles	United States	Record low minimum temperature	16.7 C (62.1 F)	1 of 100 (Routine)
Tampa	United States	Record high minimum temperature	25.6 C (78.1 F)	1 of 100 (Routine)
Adrian 2 NNE	United States	Record high maximum temperature	35.0 C (95.0 F)	1 of 100 (Routine)
Boras	Sweden	Record low maximum temperature	12.5 C (54.5 F)	0 of 100 (Routine)

Counts by Type and Timescale

44 records

Records set or tied on 18 June 1921 by type: Highest daily maximum 5, Lowest daily maximum 8, Highest daily minimum 18, Lowest daily minimum 1, Heaviest daily rainfall 12.

Records on 18 June 1921 by type
Record type	Records
Highest daily maximum	5
Lowest daily maximum	8
Highest daily minimum	18
Lowest daily minimum	1
Heaviest daily rainfall	12
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 June 1921 by timescale: all-time 0, monthly 0, daily 44.

How Much Records Were Beaten By

31 broken records

Margins by which the 31 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 20.9. Ties are not counted.

Top 20 by Significance

18 June 1921

Top 20 records on 18 June 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 June 1921	Uppsala_Aut, SE	daily rain	30.0 mm (1.2 in)	17.3 mm (0.7 in)	84 years	65 of 100 (Major)
18 June 1921	Shenkursk, RU	daily rain	30.9 mm (1.2 in)	16.5 mm (0.6 in)	30 years	40 of 100 (Notable)
18 June 1921	Morgantown 1, US	daily rain	48.3 mm (1.9 in)	20.9 mm (0.8 in)	10 years	30 of 100 (Routine)
18 June 1921	Astoria, US	daily rain	32.3 mm (1.3 in)	13.2 mm (0.5 in)	27 years	29 of 100 (Routine)
18 June 1921	Madison Wb City, US	daily high min	23.9 C (75.0 F)	1.1 C (2.0 F)	46 years	21 of 100 (Routine)
18 June 1921	Constantine, DZ	daily rain	6.6 mm (0.26 in)	4.6 mm (0.18 in)	36 years	20 of 100 (Routine)
18 June 1921	Gysinge, SE	daily rain	21.4 mm (0.8 in)	6.7 mm (0.26 in)	18 years	20 of 100 (Routine)
18 June 1921	Vasteras-Hasslo, SE	daily rain	15.0 mm (0.6 in)	0.7 mm (0.03 in)	42 years	19 of 100 (Routine)
18 June 1921	Huron Rgnl AP, US	daily high min	21.1 C (70.0 F)	1.7 C (3.1 F)	32 years	17 of 100 (Routine)
18 June 1921	Brandon Cda, CA	daily high min	17.2 C (63.0 F)	2.2 C (4.0 F)	26 years	15 of 100 (Routine)
18 June 1921	Weldon, US	daily high max	36.7 C (98.1 F)	1.7 C (3.1 F)	29 years	15 of 100 (Routine)
18 June 1921	Dubuque River, US	daily high min	23.3 C (73.9 F)	1.1 C (2.0 F)	32 years	15 of 100 (Routine)
18 June 1921	Portland Rfc City, US	daily rain	13.7 mm (0.5 in)	0.7 mm (0.03 in)	30 years	15 of 100 (Routine)
18 June 1921	Qu'appelle, CA	daily high min	16.1 C (61.0 F)	0.5 C (0.9 F)	32 years	14 of 100 (Routine)
18 June 1921	Svenska Hogarna, SE	daily rain	16.6 mm (0.7 in)	5.0 mm (0.20 in)	3 years	14 of 100 (Routine)
18 June 1921	Gainesville UNIV of Fl, US	daily high max	37.8 C (100.0 F)	1.1 C (2.0 F)	23 years	13 of 100 (Routine)
18 June 1921	Tashkent, UZ	daily low max	25.1 C (77.2 F)	0.9 C (1.6 F)	23 years	13 of 100 (Routine)
18 June 1921	Jakutsk, RU	daily high min	15.6 C (60.1 F)	2.3 C (4.1 F)	11 years	11 of 100 (Routine)
18 June 1921	Enisejsk, RU	daily rain	3.6 mm (0.14 in)	1.3 mm (0.05 in)	20 years	11 of 100 (Routine)
18 June 1921	Crookston NW Exp STN, US	daily high min	18.9 C (66.0 F)	0.6 C (1.1 F)	24 years	11 of 100 (Routine)

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 1921

Records set or tied on this calendar date in each year from 1800 to 1921. 1921 had 44 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 1921-06-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	25
5 to 10	2
10 to 15	1
15 to 20	2
20 to 25	1