Weather Records on 20 June 1918

54 weather records were set or tied worldwide on 20 June 1918. Highest significance: Orillia, CA.

Key Facts for 20 June 1918

On 20 June 1918, 54 weather records were set or tied at long-record stations worldwide.
9 were record highs and 26 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 52 daily.
Orillia set a daily record precipitation of 29.2 mm (1.1 in) on 20 June 1918.
Across 158 earlier years (1800 to 2026) the same calendar date averaged 460 records.

Record Map

54 stations

54 station records on 20 June 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 June 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Orillia	Canada	Record daily precipitation	29.2 mm (1.1 in)	27 of 100 (Routine)
Portland	United States	Record low minimum temperature	5.0 C (41.0 F)	27 of 100 (Routine)
Kingston Queens U	Canada	Record low minimum temperature	5.0 C (41.0 F)	24 of 100 (Routine)
San Diego Wbo	United States	Record high minimum temperature	19.4 C (66.9 F)	24 of 100 (Routine)
Belle Isle	Canada	Record low minimum temperature	-4.4 C (24.1 F)	23 of 100 (Routine)
Concordia ASOS	United States	Record high minimum temperature	25.0 C (77.0 F)	20 of 100 (Routine)
Yarmouth	Canada	Record low minimum temperature	2.2 C (36.0 F)	19 of 100 (Routine)
Majura 2	Australia	Record daily precipitation	19.1 mm (0.8 in)	18 of 100 (Routine)
Washington	United States	Record low maximum temperature	23.3 C (73.9 F)	18 of 100 (Routine)
Murringo (Windermere)	Australia	Record daily precipitation	17.3 mm (0.7 in)	17 of 100 (Routine)
Owen Sound	Canada	Record low minimum temperature	2.8 C (37.0 F)	17 of 100 (Routine)
Blue Hill Coop	United States	Record low minimum temperature	5.0 C (41.0 F)	17 of 100 (Routine)
Concord	United States	Record low minimum temperature	2.8 C (37.0 F)	17 of 100 (Routine)
Wombat (Tumbleton)	Australia	Record daily precipitation	18.5 mm (0.7 in)	16 of 100 (Routine)
Binya Post Office	Australia	Record daily precipitation	10.7 mm (0.4 in)	16 of 100 (Routine)
Wien	Austria	Record low maximum temperature	14.0 C (57.2 F)	16 of 100 (Routine)
Zagreb-Gric	Croatia	Record low maximum temperature	16.0 C (60.8 F)	16 of 100 (Routine)
Freiburg	Germany	Record daily precipitation	17.2 mm (0.7 in)	15 of 100 (Routine)
Gospic	Croatia	Record daily precipitation	32.6 mm (1.3 in)	15 of 100 (Routine)
Alice Springs Post Office	Australia	Record high maximum temperature	28.6 C (83.5 F)	14 of 100 (Routine)
Ashbourne	Australia	Record daily precipitation	25.4 mm (1.0 in)	14 of 100 (Routine)
Saint John	Canada	Record low minimum temperature	5.6 C (42.1 F)	14 of 100 (Routine)
Ilulissat (Jakobshavn)	Greenland [Denmark]	Record low minimum temperature	-2.3 C (27.9 F)	14 of 100 (Routine)
San Diego Wbo	United States	Record high maximum temperature	26.1 C (79.0 F)	14 of 100 (Routine)
Wunnamurra	Australia	Record daily precipitation	12.7 mm (0.5 in)	13 of 100 (Routine)
Lincoln UNIV Pwr Plt	United States	Record high minimum temperature	21.7 C (71.1 F)	13 of 100 (Routine)
Kongal	Australia	Record daily precipitation	20.8 mm (0.8 in)	12 of 100 (Routine)
Fulham Park	Australia	Record daily precipitation	3.6 mm (0.14 in)	12 of 100 (Routine)
New Westminster	Canada	Record high maximum temperature	30.0 C (86.0 F)	12 of 100 (Routine)
Charlottetown	Canada	Record low minimum temperature	2.2 C (36.0 F)	11 of 100 (Routine)
Vilnius	Lithuania	Record daily precipitation	13.0 mm (0.5 in)	11 of 100 (Routine)
Storrs	United States	Record low minimum temperature	4.4 C (39.9 F)	11 of 100 (Routine)
Bogo Bogolog	Australia	Record daily precipitation	19.1 mm (0.8 in)	10 of 100 (Routine)
Bungendore (Douglas)	Australia	Record daily precipitation	18.5 mm (0.7 in)	9 of 100 (Routine)
Bungendore (Gidleigh)	Australia	Record daily precipitation	13.2 mm (0.5 in)	9 of 100 (Routine)
Young Railway Station	Australia	Record daily precipitation	13.0 mm (0.5 in)	9 of 100 (Routine)
Middletown 4 W	United States	Record low minimum temperature	3.9 C (39.0 F)	9 of 100 (Routine)
Anticosti SW Point	Canada	Record low minimum temperature	2.8 C (37.0 F)	8 of 100 (Routine)
State College	United States	Record low minimum temperature	5.0 C (41.0 F)	8 of 100 (Routine)
Murrumburrah Old Post Office	Australia	Record daily precipitation	8.9 mm (0.35 in)	6 of 100 (Routine)
Ottawa	Canada	Record low minimum temperature	3.3 C (37.9 F)	6 of 100 (Routine)
Winnemucca AP	United States	Record high minimum temperature	18.3 C (64.9 F)	6 of 100 (Routine)
Renfrew	Canada	Record low minimum temperature	1.1 C (34.0 F)	5 of 100 (Routine)
Concordia ASOS	United States	Record high maximum temperature	38.3 C (100.9 F)	5 of 100 (Routine)
Hillston (Cowl Cowl)	Australia	Record daily precipitation	3.3 mm (0.13 in)	4 of 100 (Routine)
Baltimore Customs House	United States	Record low maximum temperature	22.8 C (73.0 F)	4 of 100 (Routine)
Bird Rocks	Canada	Record low minimum temperature	3.9 C (39.0 F)	3 of 100 (Routine)
Fredericton Unb	Canada	Record low minimum temperature	5.0 C (41.0 F)	3 of 100 (Routine)
Northfield	United States	Record low minimum temperature	-2.2 C (28.0 F)	3 of 100 (Routine)
Cape May 2 NW	United States	Record low maximum temperature	18.9 C (66.0 F)	2 of 100 (Routine)
Welland	Canada	Record daily precipitation	13.0 mm (0.5 in)	1 of 100 (Routine)
Peterborough	Canada	Record low minimum temperature	1.7 C (35.1 F)	1 of 100 (Routine)
Bird Rocks	Canada	Record low maximum temperature	7.8 C (46.0 F)	1 of 100 (Routine)
Little Rock St Capitol	United States	Record high maximum temperature	36.7 C (98.1 F)	1 of 100 (Routine)

Counts by Type and Timescale

54 records

Records set or tied on 20 June 1918 by type: Highest daily maximum 5, Lowest daily maximum 6, Highest daily minimum 4, Lowest daily minimum 20, Heaviest daily rainfall 19.

Records on 20 June 1918 by type
Record type	Records
Highest daily maximum	5
Lowest daily maximum	6
Highest daily minimum	4
Lowest daily minimum	20
Heaviest daily rainfall	19
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 June 1918 by timescale: all-time 0, monthly 2, daily 52.

How Much Records Were Beaten By

44 broken records

Margins by which the 44 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 17.0. Ties are not counted.

Top 20 by Significance

20 June 1918

Top 20 records on 20 June 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 June 1918	Orillia, CA	daily rain	29.2 mm (1.1 in)	17.0 mm (0.7 in)	12 years	27 of 100 (Routine)
20 June 1918	Portland, US	daily low min	5.0 C (41.0 F)	3.3 C (5.9 F)	43 years	27 of 100 (Routine)
20 June 1918	Kingston Queens U, CA	daily low min	5.0 C (41.0 F)	3.3 C (5.9 F)	35 years	24 of 100 (Routine)
20 June 1918	San Diego Wbo, US	daily high min	19.4 C (66.9 F)	1.6 C (2.9 F)	30 years	24 of 100 (Routine)
20 June 1918	Belle Isle, CA	daily low min	-4.4 C (24.1 F)	3.3 C (5.9 F)	33 years	23 of 100 (Routine)
20 June 1918	Concordia ASOS, US	daily high min	25.0 C (77.0 F)	3.3 C (5.9 F)	30 years	20 of 100 (Routine)
20 June 1918	Yarmouth, CA	daily low min	2.2 C (36.0 F)	1.7 C (3.1 F)	31 years	19 of 100 (Routine)
20 June 1918	Majura 2, AU	daily rain	19.1 mm (0.8 in)	10.2 mm (0.4 in)	8 years	18 of 100 (Routine)
20 June 1918	Washington, US	daily low max	23.3 C (73.9 F)	1.0 C (1.8 F)	35 years	18 of 100 (Routine)
20 June 1918	Murringo (Windermere), AU	daily rain	17.3 mm (0.7 in)	6.6 mm (0.26 in)	16 years	17 of 100 (Routine)
20 June 1918	Owen Sound, CA	daily low min	2.8 C (37.0 F)	1.6 C (2.9 F)	35 years	17 of 100 (Routine)
20 June 1918	Blue Hill Coop, US	daily low min	5.0 C (41.0 F)	3.9 C (7.0 F)	12 years	17 of 100 (Routine)
20 June 1918	Concord, US	daily low min	2.8 C (37.0 F)	3.3 C (5.9 F)	17 years	17 of 100 (Routine)
20 June 1918	Wombat (Tumbleton), AU	daily rain	18.5 mm (0.7 in)	6.6 mm (0.26 in)	16 years	16 of 100 (Routine)
20 June 1918	Binya Post Office, AU	daily rain	10.7 mm (0.4 in)	2.6 mm (0.10 in)	29 years	16 of 100 (Routine)
20 June 1918	Wien, AT	daily low max	14.0 C (57.2 F)	0.5 C (0.9 F)	31 years	16 of 100 (Routine)
20 June 1918	Zagreb-Gric, HR	daily low max	16.0 C (60.8 F)	1.8 C (3.2 F)	31 years	16 of 100 (Routine)
20 June 1918	Freiburg, DE	daily rain	17.2 mm (0.7 in)	0.7 mm (0.03 in)	37 years	15 of 100 (Routine)
20 June 1918	Gospic, HR	daily rain	32.6 mm (1.3 in)	4.1 mm (0.16 in)	28 years	15 of 100 (Routine)
20 June 1918	Alice Springs Post Office, AU	daily high max	28.6 C (83.5 F)	0.3 C (0.5 F)	34 years	14 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 1918

Records set or tied on this calendar date in each year from 1800 to 1918. 1918 had 54 records.

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

Records on 06-20 in each year
Year	Records
1800	1
1803	1
1813	1
1821	2
1838	1
1839	1
1841	1
1844	1
1846	2
1847	1
1850	1
1855	2
1857	1
1861	1
1865	2
1867	1
1869	2
1872	1
1873	1
1877	2
1879	1
1884	1
1886	2
1887	2
1891	2
1892	2
1893	2
1895	4
1896	3
1897	6
1898	3
1899	6
1900	4
1901	5
1902	7
1903	22
1904	13
1905	14
1906	18
1907	10
1908	30
1909	9
1910	27
1911	27
1912	17
1913	30
1914	53
1915	75
1916	83
1917	96
1918	54
1919	67
1920	40
1921	42
1922	61
1923	263
1924	204
1925	483
1926	228
1927	193
1928	199
1929	137
1930	143
1931	536
1932	182
1933	676
1934	301
1935	337
1936	529
1937	412
1938	326
1939	270
1940	469
1941	200
1942	757
1943	447
1944	315
1945	769
1946	849
1947	387
1948	554
1949	314
1950	328
1951	289
1952	318
1953	998
1954	414
1955	291
1956	484
1957	598
1958	603
1959	504
1960	451
1961	836
1962	173
1963	379
1964	729
1965	463
1966	441
1967	687
1968	559
1969	982
1970	482
1971	395
1972	660
1973	553
1974	743
1975	984
1976	899
1977	453
1978	480
1979	727
1980	922
1981	987
1982	801
1983	724
1984	686
1985	811
1986	732
1987	960
1988	1,222
1989	918
1990	899
1991	1,085
1992	1,049
1993	964
1994	925
1995	1,260
1996	1,123
1997	738
1998	1,627
1999	906
2000	1,328
2001	771
2002	955
2003	843
2004	1,071
2005	1,055
2006	820
2007	1,208
2008	669
2009	1,060
2010	865
2011	1,359
2012	1,045
2013	879
2014	381
2015	637
2016	1,352
2017	1,086
2018	635
2019	693
2020	590
2021	1,161
2022	972
2023	1,265
2024	783
2025	944
2026	757

Download the Data

Data for records on 1918-06-20: 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 3	28
3 to 5	12
5 to 8	2
8 to 10	0
10 to 13	1
13 to 15	0
15 to 18	1