Weather Records on 18 July 1971

625 weather records were set or tied worldwide on 18 July 1971. Highest significance: W Liberty 3NW, US.

Key Facts for 18 July 1971

On 18 July 1971, 625 weather records were set or tied at long-record stations worldwide.
166 were record highs and 259 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 14 monthly and 608 daily.
W Liberty 3NW set a monthly record daily precipitation of 123.4 mm (4.9 in) on 18 July 1971.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

625 stations

625 station records on 18 July 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
W Liberty 3NW	United States	Record daily precipitation	123.4 mm (4.9 in)	64 of 100 (Major)
Fortaleza	Brazil	Record daily precipitation	63.5 mm (2.5 in)	59 of 100 (Notable)
Piripiri	Brazil	Record daily precipitation	50.0 mm (2.0 in)	56 of 100 (Notable)
Acude Bonito	Brazil	Record daily precipitation	43.0 mm (1.7 in)	51 of 100 (Notable)
Edmore 4NW	United States	Record daily precipitation	57.4 mm (2.3 in)	51 of 100 (Notable)
Vanavara	Russia	Record daily precipitation	39.8 mm (1.6 in)	48 of 100 (Notable)
Apodi	Brazil	Record daily precipitation	35.5 mm (1.4 in)	47 of 100 (Notable)
Oregon	United States	Record daily precipitation	63.5 mm (2.5 in)	46 of 100 (Notable)
Acarape	Brazil	Record daily precipitation	42.0 mm (1.7 in)	43 of 100 (Notable)
Jena Sternwarte	Germany	Record low minimum temperature	6.0 C (42.8 F)	43 of 100 (Notable)
Leipzig-Holzhausen	Germany	Record low minimum temperature	6.9 C (44.4 F)	43 of 100 (Notable)
Ft Bidwell	United States	Record high minimum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
Magdeburg	Germany	Record low minimum temperature	6.1 C (43.0 F)	41 of 100 (Notable)
Port Stanley	Canada	Record low minimum temperature	7.8 C (46.0 F)	39 of 100 (Notable)
Turij Rog	Russia	Record daily precipitation	79.6 mm (3.1 in)	39 of 100 (Notable)
Gregory	United States	Record daily precipitation	34.3 mm (1.4 in)	39 of 100 (Notable)
Borenore Store	Australia	Record daily precipitation	36.8 mm (1.4 in)	38 of 100 (Notable)
Szombathely	Hungary	Record daily precipitation	36.7 mm (1.4 in)	38 of 100 (Notable)
Hat Creek	United States	Record high minimum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Warren 3 S	United States	Record low minimum temperature	4.4 C (39.9 F)	38 of 100 (Notable)
Berlin-Dahlem	Germany	Record low minimum temperature	8.0 C (46.4 F)	37 of 100 (Notable)
Arnsberg	Germany	Record low minimum temperature	2.5 C (36.5 F)	37 of 100 (Notable)
Mora	United States	Record daily precipitation	35.1 mm (1.4 in)	37 of 100 (Notable)
Coranderrk Badger Weir	Australia	Record daily precipitation	35.1 mm (1.4 in)	36 of 100 (Notable)
Stornoway Airport	United Kingdom	Record low minimum temperature	3.4 C (38.1 F)	36 of 100 (Notable)
Grand Forks UNIV (NWS)	United States	Record daily precipitation	36.6 mm (1.4 in)	36 of 100 (Notable)
Mayville	United States	Record daily precipitation	55.6 mm (2.2 in)	36 of 100 (Notable)
Maud	United States	Record daily precipitation	91.7 mm (3.6 in)	36 of 100 (Notable)
Cet Central England	United Kingdom	Record low minimum temperature	5.8 C (42.4 F)	35 of 100 (Notable)
Buxton	United Kingdom	Record low minimum temperature	4.6 C (40.3 F)	35 of 100 (Notable)
N Vernon 2 ESE	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Aquiraz	Brazil	Record daily precipitation	117.2 mm (4.6 in)	34 of 100 (Routine)
McCloud	United States	Record high minimum temperature	17.2 C (63.0 F)	34 of 100 (Routine)
St Petersburg	United States	Record high maximum temperature	35.0 C (95.0 F)	34 of 100 (Routine)
Silver Lake Brighton	United States	Record high minimum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Woodstock	Canada	Record low minimum temperature	6.7 C (44.1 F)	33 of 100 (Routine)
Fichtelberg	Germany	Record low minimum temperature	2.7 C (36.9 F)	33 of 100 (Routine)
Bajandaj	Russia	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Ladysmith 3W	United States	Record daily precipitation	39.4 mm (1.6 in)	33 of 100 (Routine)
Vevay	United States	Record daily precipitation	55.4 mm (2.2 in)	32 of 100 (Routine)
Hickman	United States	Record daily precipitation	62.2 mm (2.4 in)	32 of 100 (Routine)
Hemlock	United States	Record low minimum temperature	6.1 C (43.0 F)	32 of 100 (Routine)
Portsmouth-Sciotoville	United States	Record daily precipitation	46.7 mm (1.8 in)	32 of 100 (Routine)
Shawano 2SSW	United States	Record low minimum temperature	7.2 C (45.0 F)	32 of 100 (Routine)
Batalha	Brazil	Record daily precipitation	55.1 mm (2.2 in)	31 of 100 (Routine)
Montelimar	France	Record daily precipitation	34.0 mm (1.3 in)	31 of 100 (Routine)
Potsdam	Germany	Record low minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Cottbus	Germany	Record low minimum temperature	7.9 C (46.2 F)	31 of 100 (Routine)
Vilnius	Lithuania	Record low minimum temperature	6.5 C (43.7 F)	31 of 100 (Routine)
Teriberka	Russia	Record daily precipitation	31.3 mm (1.2 in)	31 of 100 (Routine)
Sveg	Sweden	Record low minimum temperature	-0.7 C (30.7 F)	31 of 100 (Routine)
Vanceburg	United States	Record daily precipitation	25.1 mm (1.0 in)	31 of 100 (Routine)
Round Grove	United States	Record high minimum temperature	13.9 C (57.0 F)	31 of 100 (Routine)
Mandurama (Gallymont (Homeleig	Australia	Record daily precipitation	38.6 mm (1.5 in)	30 of 100 (Routine)
Maracanau	Brazil	Record daily precipitation	26.0 mm (1.0 in)	30 of 100 (Routine)
Plauen	Germany	Record low minimum temperature	4.2 C (39.6 F)	30 of 100 (Routine)
Ulan-Ude	Russia	Record daily precipitation	38.4 mm (1.5 in)	30 of 100 (Routine)
Rothamsted	United Kingdom	Record low minimum temperature	4.0 C (39.2 F)	30 of 100 (Routine)
Ukiah	United States	Record high minimum temperature	20.6 C (69.1 F)	30 of 100 (Routine)
Healdton 3 E	United States	Record high maximum temperature	42.2 C (108.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

625 records

Records set or tied on 18 July 1971 by type: Highest daily maximum 49, Lowest daily maximum 76, Highest daily minimum 117, Lowest daily minimum 183, Heaviest daily rainfall 199, Deepest snow cover 1.

Records on 18 July 1971 by type
Record type	Records
Highest daily maximum	49
Lowest daily maximum	76
Highest daily minimum	117
Lowest daily minimum	183
Heaviest daily rainfall	199
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 18 July 1971 by timescale: all-time 3, monthly 14, daily 608.

How Much Records Were Beaten By

483 broken records

Margins by which the 483 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 483.0. Ties are not counted.

Top 20 by Significance

18 July 1971

Top 20 records on 18 July 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1971	W Liberty 3NW, US	monthly rain	123.4 mm (4.9 in)	54.8 mm (2.2 in)	30 years	64 of 100 (Major)
18 July 1971	Fortaleza, BR	daily rain	63.5 mm (2.5 in)	46.4 mm (1.8 in)	49 years	59 of 100 (Notable)
18 July 1971	Piripiri, BR	daily rain	50.0 mm (2.0 in)	34.8 mm (1.4 in)	48 years	56 of 100 (Notable)
18 July 1971	Acude Bonito, BR	daily rain	43.0 mm (1.7 in)	29.0 mm (1.1 in)	49 years	51 of 100 (Notable)
18 July 1971	Edmore 4NW, US	daily rain	57.4 mm (2.3 in)	38.6 mm (1.5 in)	30 years	51 of 100 (Notable)
18 July 1971	Vanavara, RU	daily rain	39.8 mm (1.6 in)	25.9 mm (1.0 in)	16 years	48 of 100 (Notable)
18 July 1971	Apodi, BR	daily rain	35.5 mm (1.4 in)	26.5 mm (1.0 in)	49 years	47 of 100 (Notable)
18 July 1971	Oregon, US	daily rain	63.5 mm (2.5 in)	30.7 mm (1.2 in)	68 years	46 of 100 (Notable)
18 July 1971	Acarape, BR	daily rain	42.0 mm (1.7 in)	27.9 mm (1.1 in)	1 year	43 of 100 (Notable)
18 July 1971	Jena Sternwarte, DE	daily low min	6.0 C (42.8 F)	0.9 C (1.6 F)	125 years	43 of 100 (Notable)
18 July 1971	Leipzig-Holzhausen, DE	daily low min	6.9 C (44.4 F)	2.1 C (3.8 F)	84 years	43 of 100 (Notable)
18 July 1971	Ft Bidwell, US	daily high min	17.8 C (64.0 F)	1.7 C (3.1 F)	99 years	43 of 100 (Notable)
18 July 1971	Magdeburg, DE	daily low min	6.1 C (43.0 F)	2.0 C (3.6 F)	84 years	41 of 100 (Notable)
18 July 1971	Port Stanley, CA	daily low min	7.8 C (46.0 F)	1.6 C (2.9 F)	86 years	39 of 100 (Notable)
18 July 1971	Turij Rog, RU	daily rain	79.6 mm (3.1 in)	37.0 mm (1.5 in)	14 years	39 of 100 (Notable)
18 July 1971	Gregory, US	daily rain	34.3 mm (1.4 in)	19.1 mm (0.8 in)	64 years	39 of 100 (Notable)
18 July 1971	Borenore Store, AU	daily rain	36.8 mm (1.4 in)	16.5 mm (0.6 in)	40 years	38 of 100 (Notable)
18 July 1971	Szombathely, HU	daily rain	36.7 mm (1.4 in)	15.1 mm (0.6 in)	49 years	38 of 100 (Notable)
18 July 1971	Hat Creek, US	daily high min	17.8 C (64.0 F)	5.6 C (10.1 F)	48 years	38 of 100 (Notable)
18 July 1971	Warren 3 S, US	daily low min	4.4 C (39.9 F)	3.9 C (7.0 F)	74 years	38 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

1793 to 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 625 records.

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

Records on 07-18 in each year
Year	Records
1793	2
1801	1
1845	1
1847	1
1851	1
1858	1
1862	1
1863	2
1865	1
1866	2
1871	2
1872	1
1874	1
1877	1
1878	4
1880	1
1881	2
1883	2
1886	2
1887	2
1888	1
1889	2
1890	4
1891	1
1892	2
1895	1
1896	2
1897	6
1898	2
1899	3
1900	8
1901	5
1902	3
1903	14
1904	7
1905	22
1906	13
1907	12
1908	39
1909	11
1910	33
1911	42
1912	28
1913	21
1914	47
1915	95
1916	235
1917	265
1918	58
1919	38
1920	59
1921	67
1922	138
1923	126
1924	306
1925	217
1926	191
1927	85
1928	108
1929	123
1930	462
1931	382
1932	343
1933	228
1934	502
1935	212
1936	665
1937	334
1938	306
1939	424
1940	352
1941	349
1942	661
1943	277
1944	333
1945	350
1946	334
1947	385
1948	289
1949	521
1950	632
1951	307
1952	597
1953	493
1954	501
1955	423
1956	466
1957	325
1958	475
1959	548
1960	669
1961	280
1962	516
1963	269
1964	523
1965	707
1966	545
1967	735
1968	998
1969	590
1970	530
1971	625
1972	701
1973	976
1974	729
1975	643
1976	1,047
1977	839
1978	881
1979	821
1980	747
1981	624
1982	749
1983	1,071
1984	1,000
1985	582
1986	908
1987	1,845
1988	1,001
1989	1,233
1990	1,053
1991	589
1992	1,135
1993	1,013
1994	720
1995	904
1996	1,157
1997	785
1998	1,169
1999	900
2000	1,214
2001	909
2002	840
2003	1,159
2004	985
2005	1,210
2006	1,285
2007	1,267
2008	593
2009	1,757
2010	878
2011	1,148
2012	1,070
2013	921
2014	1,348
2015	745
2016	609
2017	426
2018	699
2019	548
2020	361
2021	676
2022	1,071
2023	867
2024	581
2025	779
2026	806

Download the Data

Data for records on 1971-07-18: 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 100	482
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	1