Weather Records on 18 July 1977

839 weather records were set or tied worldwide on 18 July 1977. Highest significance: Greer, US.

Key Facts for 18 July 1977

On 18 July 1977, 839 weather records were set or tied at long-record stations worldwide.
387 were record highs and 255 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 20 monthly and 813 daily.
Greer set a daily record precipitation of 46.5 mm (1.8 in) on 18 July 1977.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

839 stations

839 station records on 18 July 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Greer	United States	Record daily precipitation	46.5 mm (1.8 in)	62 of 100 (Major)
Guthrie Ctr	United States	Record daily precipitation	80.3 mm (3.2 in)	58 of 100 (Notable)
Chita	Russia	Record high minimum temperature	21.9 C (71.4 F)	57 of 100 (Notable)
Beaver	United States	Record daily precipitation	38.1 mm (1.5 in)	57 of 100 (Notable)
Platteville	United States	Record daily precipitation	105.4 mm (4.1 in)	56 of 100 (Notable)
Nikolaev	Ukraine	Record daily precipitation	40.2 mm (1.6 in)	50 of 100 (Notable)
Muscoda	United States	Record daily precipitation	89.4 mm (3.5 in)	49 of 100 (Notable)
Diversion Dam	United States	Record high minimum temperature	21.1 C (70.0 F)	46 of 100 (Notable)
Sharon Springs	United States	Record high minimum temperature	28.3 C (82.9 F)	45 of 100 (Notable)
Dwingelo	Netherlands	Record daily precipitation	31.9 mm (1.3 in)	44 of 100 (Notable)
Port Isabel	United States	Record daily precipitation	47.5 mm (1.9 in)	44 of 100 (Notable)
Darlington Wwtp	United States	Record daily precipitation	134.6 mm (5.3 in)	44 of 100 (Notable)
Inza	Russia	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
Uppsala_Aut	Sweden	Record low maximum temperature	13.8 C (56.8 F)	41 of 100 (Notable)
Feodosiia	Ukraine	Record low minimum temperature	12.8 C (55.0 F)	41 of 100 (Notable)
Torrington Exp Farm	United States	Record high maximum temperature	43.9 C (111.0 F)	41 of 100 (Notable)
Ocean Falls	Canada	Record daily precipitation	88.9 mm (3.5 in)	40 of 100 (Notable)
Chita	Russia	Record high maximum temperature	37.6 C (99.7 F)	39 of 100 (Notable)
Caledonia	United States	Record daily precipitation	48.8 mm (1.9 in)	39 of 100 (Notable)
Hobart (Ellerslie Road)	Australia	Record low maximum temperature	7.6 C (45.7 F)	38 of 100 (Notable)
Huatusco de Chicuellar	Mexico	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record low maximum temperature	26.7 C (80.1 F)	38 of 100 (Notable)
Lawrenceville 3 SW	United States	Record daily precipitation	44.7 mm (1.8 in)	38 of 100 (Notable)
Vladikavkaz	Russia	Record low minimum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Atlantic 1 NE	United States	Record daily precipitation	49.3 mm (1.9 in)	37 of 100 (Notable)
Fredericksburg Np	United States	Record high maximum temperature	39.4 C (102.9 F)	37 of 100 (Notable)
Fitzgerald	United States	Record low minimum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Nicosia	Cyprus	Record high maximum temperature	42.4 C (108.3 F)	35 of 100 (Notable)
Harnosand	Sweden	Record low maximum temperature	12.5 C (54.5 F)	35 of 100 (Notable)
Vanersborg	Sweden	Record low maximum temperature	13.8 C (56.8 F)	35 of 100 (Notable)
Skara 1	Sweden	Record low maximum temperature	13.7 C (56.7 F)	35 of 100 (Notable)
Kubbe	Sweden	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Hachita 1W	United States	Record daily precipitation	32.3 mm (1.3 in)	35 of 100 (Notable)
Nannup	Australia	Record daily precipitation	36.8 mm (1.4 in)	34 of 100 (Routine)
Fellsmere 7 SSW	United States	Record low maximum temperature	28.3 C (82.9 F)	34 of 100 (Routine)
Corinne	United States	Record high minimum temperature	23.9 C (75.0 F)	34 of 100 (Routine)
Dodgeville Wwtp	United States	Record daily precipitation	140.5 mm (5.5 in)	34 of 100 (Routine)
Lake Mills Wwtp	United States	Record daily precipitation	62.5 mm (2.5 in)	34 of 100 (Routine)
Lansing	United States	Record daily precipitation	65.3 mm (2.6 in)	33 of 100 (Routine)
Toms River	United States	Record high maximum temperature	38.9 C (102.0 F)	33 of 100 (Routine)
Bella Coola	Canada	Record low maximum temperature	13.0 C (55.4 F)	32 of 100 (Routine)
Atyrau	Kazakhstan	Record low maximum temperature	21.7 C (71.1 F)	32 of 100 (Routine)
Piaxtla	Mexico	Record daily precipitation	59.9 mm (2.4 in)	32 of 100 (Routine)
Karlstad	Sweden	Record low maximum temperature	13.6 C (56.5 F)	32 of 100 (Routine)
Askaniia Nova	Ukraine	Record low maximum temperature	22.3 C (72.1 F)	32 of 100 (Routine)
Forsyth 6 NNW	United States	Record high maximum temperature	35.6 C (96.1 F)	32 of 100 (Routine)
Albion	United States	Record high minimum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Camp Crook	United States	Record high maximum temperature	40.6 C (105.1 F)	32 of 100 (Routine)
Kadoka	United States	Record high maximum temperature	41.1 C (106.0 F)	32 of 100 (Routine)
Prairie du Chien	United States	Record daily precipitation	65.8 mm (2.6 in)	32 of 100 (Routine)
Manchester 4 W	United States	Record high minimum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Moro	United States	Record low maximum temperature	20.6 C (69.1 F)	31 of 100 (Routine)
Beaumont City	United States	Record low minimum temperature	20.6 C (69.1 F)	31 of 100 (Routine)
Stockholm	Sweden	Record low maximum temperature	13.8 C (56.8 F)	30 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record high minimum temperature	22.2 C (72.0 F)	30 of 100 (Routine)
Scarsdale	United States	Record high minimum temperature	23.3 C (73.9 F)	30 of 100 (Routine)
Steele 4N	United States	Record high minimum temperature	23.3 C (73.9 F)	30 of 100 (Routine)
Ft Meade	United States	Record high minimum temperature	25.6 C (78.1 F)	30 of 100 (Routine)
Lancaster 4 WSW	United States	Record daily precipitation	74.2 mm (2.9 in)	30 of 100 (Routine)
Busselton Shire	Australia	Record daily precipitation	44.0 mm (1.7 in)	29 of 100 (Routine)

Counts by Type and Timescale

839 records

Records set or tied on 18 July 1977 by type: Highest daily maximum 211, Lowest daily maximum 155, Highest daily minimum 176, Lowest daily minimum 100, Heaviest daily rainfall 197.

Records on 18 July 1977 by type
Record type	Records
Highest daily maximum	211
Lowest daily maximum	155
Highest daily minimum	176
Lowest daily minimum	100
Heaviest daily rainfall	197
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1977 by timescale: all-time 6, monthly 20, daily 813.

How Much Records Were Beaten By

620 broken records

Margins by which the 620 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 77.7. Ties are not counted.

Top 20 by Significance

18 July 1977

Top 20 records on 18 July 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1977	Greer, US	daily rain	46.5 mm (1.8 in)	26.7 mm (1.1 in)	64 years	62 of 100 (Major)
18 July 1977	Guthrie Ctr, US	daily rain	80.3 mm (3.2 in)	46.8 mm (1.8 in)	75 years	58 of 100 (Notable)
18 July 1977	Chita, RU	all-time high min	21.9 C (71.4 F)	1.0 C (1.8 F)	86 years	57 of 100 (Notable)
18 July 1977	Beaver, US	daily rain	38.1 mm (1.5 in)	20.8 mm (0.8 in)	52 years	57 of 100 (Notable)
18 July 1977	Platteville, US	daily rain	105.4 mm (4.1 in)	77.7 mm (3.1 in)	40 years	56 of 100 (Notable)
18 July 1977	Nikolaev, UA	daily rain	40.2 mm (1.6 in)	18.2 mm (0.7 in)	76 years	50 of 100 (Notable)
18 July 1977	Muscoda, US	daily rain	89.4 mm (3.5 in)	66.5 mm (2.6 in)	8 years	49 of 100 (Notable)
18 July 1977	Diversion Dam, US	all-time high min	21.1 C (70.0 F)	1.7 C (3.1 F)	50 years	46 of 100 (Notable)
18 July 1977	Sharon Springs, US	daily high min	28.3 C (82.9 F)	4.4 C (7.9 F)	82 years	45 of 100 (Notable)
18 July 1977	Dwingelo, NL	daily rain	31.9 mm (1.3 in)	15.9 mm (0.6 in)	52 years	44 of 100 (Notable)
18 July 1977	Port Isabel, US	daily rain	47.5 mm (1.9 in)	30.0 mm (1.2 in)	46 years	44 of 100 (Notable)
18 July 1977	Darlington Wwtp, US	monthly rain	134.6 mm (5.3 in)	8.9 mm (0.35 in)	74 years	44 of 100 (Notable)
18 July 1977	Inza, RU	daily rain	44.5 mm (1.8 in)	24.5 mm (1.0 in)	32 years	43 of 100 (Notable)
18 July 1977	Uppsala_Aut, SE	daily low max	13.8 C (56.8 F)	0.8 C (1.4 F)	110 years	41 of 100 (Notable)
18 July 1977	Feodosiia, UA	daily low min	12.8 C (55.0 F)	2.8 C (5.0 F)	75 years	41 of 100 (Notable)
18 July 1977	Torrington Exp Farm, US	all-time high max	43.9 C (111.0 F)	2.2 C (4.0 F)	38 years	41 of 100 (Notable)
18 July 1977	Ocean Falls, CA	daily rain	88.9 mm (3.5 in)	44.2 mm (1.7 in)	10 years	40 of 100 (Notable)
18 July 1977	Chita, RU	daily high max	37.6 C (99.7 F)	3.5 C (6.3 F)	78 years	39 of 100 (Notable)
18 July 1977	Caledonia, US	daily rain	48.8 mm (1.9 in)	23.1 mm (0.9 in)	62 years	39 of 100 (Notable)
18 July 1977	Hobart (Ellerslie Road), AU	daily low max	7.6 C (45.7 F)	0.6 C (1.1 F)	90 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 1977

Records set or tied on this calendar date in each year from 1793 to 1977. 1977 had 839 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 1977-07-18: 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 10	569
10 to 20	30
20 to 30	10
30 to 40	7
40 to 50	2
50 to 60	0
60 to 70	1
70 to 80	1