Weather Records on 18 July 1927

85 weather records were set or tied worldwide on 18 July 1927. Highest significance: Calgary Int'l A, CA.

Key Facts for 18 July 1927

On 18 July 1927, 85 weather records were set or tied at long-record stations worldwide.
50 were record highs and 10 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 82 daily.
Calgary Int'l A set a daily record precipitation of 43.2 mm (1.7 in) on 18 July 1927.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 464 records.

Record Map

85 stations

85 station records on 18 July 1927 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 July 1927: highest significance records shown on the map
Station	Country	Type	Value	Significance
Calgary Int'l A	Canada	Record daily precipitation	43.2 mm (1.7 in)	52 of 100 (Notable)
Minsk	Belarus	Record daily precipitation	36.1 mm (1.4 in)	36 of 100 (Notable)
Port Campbell Post Office	Australia	Record daily precipitation	25.9 mm (1.0 in)	32 of 100 (Routine)
Cottbus	Germany	Record daily precipitation	72.4 mm (2.9 in)	30 of 100 (Routine)
Columbia	United States	Record daily precipitation	54.4 mm (2.1 in)	30 of 100 (Routine)
Quebec	Canada	Record daily precipitation	32.5 mm (1.3 in)	25 of 100 (Routine)
Rocky Mt	United States	Record daily precipitation	110.2 mm (4.3 in)	23 of 100 (Routine)
Solomons	United States	Record daily precipitation	48.3 mm (1.9 in)	22 of 100 (Routine)
Sveg	Sweden	Record high minimum temperature	15.0 C (59.0 F)	21 of 100 (Routine)
Pakri	Estonia	Record daily precipitation	21.7 mm (0.9 in)	20 of 100 (Routine)
Laghouat	Algeria	Record high minimum temperature	27.0 C (80.6 F)	20 of 100 (Routine)
Guelph Oac	Canada	Record daily precipitation	28.4 mm (1.1 in)	20 of 100 (Routine)
Falsterbo	Sweden	Record daily precipitation	29.3 mm (1.2 in)	20 of 100 (Routine)
San Jacinto	United States	Record high maximum temperature	44.4 C (111.9 F)	20 of 100 (Routine)
Parnu	Estonia	Record daily precipitation	33.0 mm (1.3 in)	18 of 100 (Routine)
Hoburg	Sweden	Record daily precipitation	15.6 mm (0.6 in)	18 of 100 (Routine)
Stockholm	Sweden	Record high minimum temperature	19.5 C (67.1 F)	18 of 100 (Routine)
Independence	United States	Record high maximum temperature	39.4 C (102.9 F)	18 of 100 (Routine)
Morden	Canada	Record daily precipitation	28.4 mm (1.1 in)	17 of 100 (Routine)
San Bernardino F S 226	United States	Record high maximum temperature	43.3 C (109.9 F)	17 of 100 (Routine)
St. Petersburg	Russia	Record high maximum temperature	30.3 C (86.5 F)	16 of 100 (Routine)
Ulan-Ude	Russia	Record low minimum temperature	3.7 C (38.7 F)	16 of 100 (Routine)
Gallivare_A	Sweden	Record daily precipitation	19.5 mm (0.8 in)	16 of 100 (Routine)
Crystal Springs Exp STN	United States	Record high maximum temperature	37.2 C (99.0 F)	16 of 100 (Routine)
Chinook	United States	Record low minimum temperature	2.2 C (36.0 F)	16 of 100 (Routine)
College STN 6 SW	United States	Record high minimum temperature	25.6 C (78.1 F)	16 of 100 (Routine)
Alton	Canada	Record daily precipitation	14.5 mm (0.6 in)	15 of 100 (Routine)
Clanton	United States	Record daily precipitation	54.1 mm (2.1 in)	15 of 100 (Routine)
Pine Bluff	United States	Record high minimum temperature	25.0 C (77.0 F)	15 of 100 (Routine)
W Pt	United States	Record high maximum temperature	33.9 C (93.0 F)	15 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	17.0 C (62.6 F)	14 of 100 (Routine)
Durango	United States	Record high minimum temperature	15.6 C (60.1 F)	14 of 100 (Routine)
Wetumpka	United States	Record high minimum temperature	24.4 C (75.9 F)	13 of 100 (Routine)
Natchez	United States	Record high maximum temperature	37.2 C (99.0 F)	13 of 100 (Routine)
Cowles	United States	Record high maximum temperature	31.1 C (88.0 F)	13 of 100 (Routine)
Carrajung Post Office	Australia	Record daily precipitation	7.1 mm (0.28 in)	12 of 100 (Routine)
Tartu	Estonia	Record high minimum temperature	18.1 C (64.6 F)	12 of 100 (Routine)
Oakley	United States	Record high maximum temperature	38.3 C (100.9 F)	12 of 100 (Routine)
Old Mission	United States	Record low maximum temperature	17.2 C (63.0 F)	12 of 100 (Routine)
Swan Hill (Murray Downs)	Australia	Record daily precipitation	8.9 mm (0.35 in)	11 of 100 (Routine)
Lincoln Lock 4	United States	Record low maximum temperature	26.1 C (79.0 F)	11 of 100 (Routine)
Granite Reef Dam	United States	Record high maximum temperature	45.0 C (113.0 F)	11 of 100 (Routine)
Alexandria	United States	Record high maximum temperature	38.9 C (102.0 F)	11 of 100 (Routine)
Fall River	United States	Record daily precipitation	18.3 mm (0.7 in)	11 of 100 (Routine)
Harnosand	Sweden	Record high minimum temperature	18.5 C (65.3 F)	10 of 100 (Routine)
Concord	United States	Record high minimum temperature	21.7 C (71.1 F)	10 of 100 (Routine)
Hay River	Canada	Record high maximum temperature	27.8 C (82.0 F)	9 of 100 (Routine)
Karesuando	Sweden	Record daily precipitation	21.3 mm (0.8 in)	9 of 100 (Routine)
Grinnell 3 SW	United States	Record daily precipitation	1.8 mm (0.07 in)	9 of 100 (Routine)
Moab	United States	Record high minimum temperature	23.3 C (73.9 F)	9 of 100 (Routine)
Lake Charles Chenault	United States	Record high maximum temperature	37.8 C (100.0 F)	9 of 100 (Routine)
Scipio	United States	Record high minimum temperature	17.8 C (64.0 F)	8 of 100 (Routine)
Bluefield 2 NW	United States	Record daily precipitation	30.5 mm (1.2 in)	8 of 100 (Routine)
Muenster	Germany	Record low maximum temperature	17.0 C (62.6 F)	7 of 100 (Routine)
Newport	United States	Record high minimum temperature	13.9 C (57.0 F)	7 of 100 (Routine)
Mackay Post Office	Australia	Record low maximum temperature	17.7 C (63.9 F)	6 of 100 (Routine)
Tooele	United States	Record high maximum temperature	36.7 C (98.1 F)	5 of 100 (Routine)
Old Mapoon	Australia	Record daily precipitation	1.5 mm (0.06 in)	4 of 100 (Routine)
Ueckermunde	Germany	Record daily precipitation	26.5 mm (1.0 in)	4 of 100 (Routine)
Bajramaly	Turkmenistan	Record high minimum temperature	25.7 C (78.3 F)	4 of 100 (Routine)

Counts by Type and Timescale

85 records

Records set or tied on 18 July 1927 by type: Highest daily maximum 22, Lowest daily maximum 6, Highest daily minimum 28, Lowest daily minimum 4, Heaviest daily rainfall 25.

Records on 18 July 1927 by type
Record type	Records
Highest daily maximum	22
Lowest daily maximum	6
Highest daily minimum	28
Lowest daily minimum	4
Heaviest daily rainfall	25
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 July 1927 by timescale: all-time 0, monthly 3, daily 82.

How Much Records Were Beaten By

60 broken records

Margins by which the 60 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 33.0. Ties are not counted.

Top 20 by Significance

18 July 1927

Top 20 records on 18 July 1927 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 July 1927	Calgary Int'l A, CA	daily rain	43.2 mm (1.7 in)	33.0 mm (1.3 in)	28 years	52 of 100 (Notable)
18 July 1927	Minsk, BY	daily rain	36.1 mm (1.4 in)	16.1 mm (0.6 in)	27 years	36 of 100 (Notable)
18 July 1927	Port Campbell Post Office, AU	daily rain	25.9 mm (1.0 in)	13.7 mm (0.5 in)	16 years	32 of 100 (Routine)
18 July 1927	Cottbus, DE	monthly rain	72.4 mm (2.9 in)	7.8 mm (0.31 in)	21 years	30 of 100 (Routine)
18 July 1927	Columbia, US	daily rain	54.4 mm (2.1 in)	26.5 mm (1.0 in)	34 years	30 of 100 (Routine)
18 July 1927	Quebec, CA	daily rain	32.5 mm (1.3 in)	8.6 mm (0.34 in)	35 years	25 of 100 (Routine)
18 July 1927	Rocky Mt, US	monthly rain	110.2 mm (4.3 in)	2.2 mm (0.09 in)	31 years	23 of 100 (Routine)
18 July 1927	Solomons, US	daily rain	48.3 mm (1.9 in)	14.5 mm (0.6 in)	29 years	22 of 100 (Routine)
18 July 1927	Sveg, SE	daily high min	15.0 C (59.0 F)	1.5 C (2.7 F)	44 years	21 of 100 (Routine)
18 July 1927	Pakri, EE	daily rain	21.7 mm (0.9 in)	11.1 mm (0.4 in)	20 years	20 of 100 (Routine)
18 July 1927	Laghouat, DZ	daily high min	27.0 C (80.6 F)	2.0 C (3.6 F)	33 years	20 of 100 (Routine)
18 July 1927	Guelph Oac, CA	daily rain	28.4 mm (1.1 in)	13.4 mm (0.5 in)	18 years	20 of 100 (Routine)
18 July 1927	Falsterbo, SE	daily rain	29.3 mm (1.2 in)	7.8 mm (0.31 in)	8 years	20 of 100 (Routine)
18 July 1927	San Jacinto, US	monthly high max	44.4 C (111.9 F)	0.5 C (0.9 F)	20 years	20 of 100 (Routine)
18 July 1927	Parnu, EE	daily rain	33.0 mm (1.3 in)	4.8 mm (0.19 in)	20 years	18 of 100 (Routine)
18 July 1927	Hoburg, SE	daily rain	15.6 mm (0.6 in)	3.9 mm (0.15 in)	29 years	18 of 100 (Routine)
18 July 1927	Stockholm, SE	daily high min	19.5 C (67.1 F)	1.5 C (2.7 F)	27 years	18 of 100 (Routine)
18 July 1927	Independence, US	daily high max	39.4 C (102.9 F)	1.6 C (2.9 F)	33 years	18 of 100 (Routine)
18 July 1927	Morden, CA	daily rain	28.4 mm (1.1 in)	5.5 mm (0.22 in)	31 years	17 of 100 (Routine)
18 July 1927	San Bernardino F S 226, US	daily high max	43.3 C (109.9 F)	2.2 C (4.0 F)	27 years	17 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

1793 to 1927

Records set or tied on this calendar date in each year from 1793 to 1927. 1927 had 85 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 1927-07-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	44
5 to 10	8
10 to 15	4
15 to 20	1
20 to 25	1
25 to 30	1
30 to 35	1