Weather Records on 21 July 1927

191 weather records were set or tied worldwide on 21 July 1927. Highest significance: Visby_Flygplats, SE.

Key Facts for 21 July 1927

On 21 July 1927, 191 weather records were set or tied at long-record stations worldwide.
43 were record highs and 42 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 190 daily.
Visby_Flygplats set a daily record precipitation of 42.5 mm (1.7 in) on 21 July 1927.
Across 159 earlier years (1794 to 2026) the same calendar date averaged 468 records.

Record Map

191 stations

191 station records on 21 July 1927 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 July 1927: highest significance records shown on the map
Station	Country	Type	Value	Significance
Visby_Flygplats	Sweden	Record daily precipitation	42.5 mm (1.7 in)	56 of 100 (Notable)
Rushville	United States	Record daily precipitation	47.8 mm (1.9 in)	49 of 100 (Notable)
Port Broughton	Australia	Record daily precipitation	27.4 mm (1.1 in)	45 of 100 (Notable)
Georgetown	Australia	Record daily precipitation	28.4 mm (1.1 in)	40 of 100 (Notable)
Deniliquin (Wilkinson St)	Australia	Record low maximum temperature	7.2 C (45.0 F)	35 of 100 (Notable)
Brinkworth (Bungaree)	Australia	Record daily precipitation	27.9 mm (1.1 in)	34 of 100 (Routine)
Qu'appelle	Canada	Record daily precipitation	32.8 mm (1.3 in)	33 of 100 (Routine)
Harrisonville	United States	Record daily precipitation	40.4 mm (1.6 in)	29 of 100 (Routine)
Vastervik	Sweden	Record daily precipitation	27.9 mm (1.1 in)	25 of 100 (Routine)
Griggsville	United States	Record daily precipitation	29.7 mm (1.2 in)	25 of 100 (Routine)
Sigourney	United States	Record daily precipitation	30.5 mm (1.2 in)	23 of 100 (Routine)
Racine Wwtp	United States	Record daily precipitation	49.5 mm (1.9 in)	23 of 100 (Routine)
Adelaide West Terrace	Australia	Record low maximum temperature	10.0 C (50.0 F)	22 of 100 (Routine)
Second Valley (Poolamacca)	Australia	Record daily precipitation	25.4 mm (1.0 in)	22 of 100 (Routine)
Saint John	Canada	Record high minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record daily precipitation	40.0 mm (1.6 in)	22 of 100 (Routine)
Carlinville	United States	Record daily precipitation	36.1 mm (1.4 in)	22 of 100 (Routine)
Malin Head	Ireland	Record daily precipitation	20.5 mm (0.8 in)	20 of 100 (Routine)
Narridy Post Office	Australia	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Gladstone	Australia	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Mundoora	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Redhill	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Maitland	Australia	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Yacka	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Hallett	Australia	Record daily precipitation	17.5 mm (0.7 in)	20 of 100 (Routine)
Roseworthy Agric College	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Crystal Brook	Australia	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Gladstone (Booyoolee)	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Brinkworth (Anama Park)	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Hallett (Old Canowie)	Australia	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Roseworthy	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Ilulissat (Jakobshavn)	Greenland [Denmark]	Record daily precipitation	14.1 mm (0.6 in)	20 of 100 (Routine)
Snowtown	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Port Pirie (Valencia)	Australia	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Bute (Ninnes)	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Port Victoria	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Maitland (Weetulta)	Australia	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Lyndoch	Australia	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Nuriootpa	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Kadina	Australia	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Stockwell	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Two Wells	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Old Noarlunga Post Office	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Koolunga	Australia	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Jefferson 3SE	United States	Record high minimum temperature	25.0 C (77.0 F)	20 of 100 (Routine)
Wallaroo	Australia	Record daily precipitation	17.0 mm (0.7 in)	19 of 100 (Routine)
Charters Towers Post Office	Australia	Record low maximum temperature	16.1 C (61.0 F)	19 of 100 (Routine)
Clontarf	Canada	Record low minimum temperature	2.8 C (37.0 F)	19 of 100 (Routine)
Bisbee	United States	Record high minimum temperature	22.8 C (73.0 F)	19 of 100 (Routine)
Toledo 3N	United States	Record daily precipitation	22.9 mm (0.9 in)	19 of 100 (Routine)
St Charles Elm Pt	United States	Record daily precipitation	21.8 mm (0.9 in)	19 of 100 (Routine)
Newport	United States	Record high minimum temperature	14.4 C (57.9 F)	19 of 100 (Routine)
Tanunda	Australia	Record daily precipitation	18.0 mm (0.7 in)	18 of 100 (Routine)
Truro	Australia	Record daily precipitation	18.3 mm (0.7 in)	18 of 100 (Routine)
Indian Head Cda	Canada	Record daily precipitation	16.0 mm (0.6 in)	18 of 100 (Routine)
Granite Reef Dam	United States	Record high maximum temperature	46.7 C (116.1 F)	18 of 100 (Routine)
Las Animas	United States	Record daily precipitation	20.3 mm (0.8 in)	18 of 100 (Routine)
Jacksonville 2E	United States	Record daily precipitation	49.3 mm (1.9 in)	18 of 100 (Routine)
Appleton City	United States	Record daily precipitation	61.0 mm (2.4 in)	18 of 100 (Routine)
Lusk 2 SW	United States	Record daily precipitation	7.6 mm (0.30 in)	18 of 100 (Routine)

Counts by Type and Timescale

191 records

Records set or tied on 21 July 1927 by type: Highest daily maximum 20, Lowest daily maximum 27, Highest daily minimum 23, Lowest daily minimum 15, Heaviest daily rainfall 106.

Records on 21 July 1927 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	27
Highest daily minimum	23
Lowest daily minimum	15
Heaviest daily rainfall	106
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 July 1927 by timescale: all-time 0, monthly 1, daily 190.

How Much Records Were Beaten By

156 broken records

Margins by which the 156 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 47.8. Ties are not counted.

Top 20 by Significance

21 July 1927

Top 20 records on 21 July 1927 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 July 1927	Visby_Flygplats, SE	daily rain	42.5 mm (1.7 in)	27.2 mm (1.1 in)	66 years	56 of 100 (Notable)
21 July 1927	Rushville, US	daily rain	47.8 mm (1.9 in)	47.8 mm (1.9 in)	33 years	49 of 100 (Notable)
21 July 1927	Port Broughton, AU	daily rain	27.4 mm (1.1 in)	21.0 mm (0.8 in)	4 years	45 of 100 (Notable)
21 July 1927	Georgetown, AU	daily rain	28.4 mm (1.1 in)	15.7 mm (0.6 in)	28 years	40 of 100 (Notable)
21 July 1927	Deniliquin (Wilkinson St), AU	daily low max	7.2 C (45.0 F)	2.8 C (5.0 F)	58 years	35 of 100 (Notable)
21 July 1927	Brinkworth (Bungaree), AU	daily rain	27.9 mm (1.1 in)	12.2 mm (0.5 in)	28 years	34 of 100 (Routine)
21 July 1927	Qu'appelle, CA	daily rain	32.8 mm (1.3 in)	25.2 mm (1.0 in)	8 years	33 of 100 (Routine)
21 July 1927	Harrisonville, US	daily rain	40.4 mm (1.6 in)	28.0 mm (1.1 in)	24 years	29 of 100 (Routine)
21 July 1927	Vastervik, SE	daily rain	27.9 mm (1.1 in)	10.4 mm (0.4 in)	21 years	25 of 100 (Routine)
21 July 1927	Griggsville, US	daily rain	29.7 mm (1.2 in)	17.3 mm (0.7 in)	31 years	25 of 100 (Routine)
21 July 1927	Sigourney, US	daily rain	30.5 mm (1.2 in)	20.6 mm (0.8 in)	24 years	23 of 100 (Routine)
21 July 1927	Racine Wwtp, US	daily rain	49.5 mm (1.9 in)	21.6 mm (0.9 in)	14 years	23 of 100 (Routine)
21 July 1927	Adelaide West Terrace, AU	daily low max	10.0 C (50.0 F)	2.1 C (3.8 F)	26 years	22 of 100 (Routine)
21 July 1927	Second Valley (Poolamacca), AU	daily rain	25.4 mm (1.0 in)	5.1 mm (0.20 in)	36 years	22 of 100 (Routine)
21 July 1927	Saint John, CA	daily high min	15.6 C (60.1 F)	0.6 C (1.1 F)	46 years	22 of 100 (Routine)
21 July 1927	Vasteras-Hasslo, SE	daily rain	40.0 mm (1.6 in)	10.3 mm (0.4 in)	5 years	22 of 100 (Routine)
21 July 1927	Carlinville, US	daily rain	36.1 mm (1.4 in)	19.8 mm (0.8 in)	20 years	22 of 100 (Routine)
21 July 1927	Malin Head, IE	daily rain	20.5 mm (0.8 in)	13.4 mm (0.5 in)	38 years	20 of 100 (Routine)
21 July 1927	Narridy Post Office, AU	daily rain	22.6 mm (0.9 in)	15.0 mm (0.6 in)	28 years	20 of 100 (Routine)
21 July 1927	Gladstone, AU	daily rain	21.1 mm (0.8 in)	13.5 mm (0.5 in)	29 years	20 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

1794 to 1927

Records set or tied on this calendar date in each year from 1794 to 1927. 1927 had 191 records.

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

Records on 07-21 in each year
Year	Records
1794	1
1795	1
1796	1
1797	1
1813	2
1832	2
1837	1
1839	1
1843	1
1844	2
1854	1
1859	3
1865	3
1868	3
1872	1
1876	1
1879	2
1880	1
1881	1
1884	1
1885	1
1886	2
1888	2
1889	3
1890	2
1892	3
1893	3
1894	3
1895	1
1896	3
1897	4
1898	7
1899	2
1900	6
1901	13
1902	12
1903	10
1904	8
1905	13
1906	13
1907	12
1908	25
1909	18
1910	12
1911	37
1912	52
1913	41
1914	48
1915	81
1916	72
1917	136
1918	130
1919	51
1920	33
1921	55
1922	48
1923	132
1924	286
1925	202
1926	401
1927	191
1928	205
1929	360
1930	521
1931	549
1932	322
1933	208
1934	965
1935	236
1936	322
1937	253
1938	638
1939	415
1940	318
1941	226
1942	318
1943	253
1944	716
1945	300
1946	398
1947	795
1948	403
1949	603
1950	662
1951	427
1952	657
1953	351
1954	656
1955	582
1956	490
1957	447
1958	531
1959	940
1960	651
1961	388
1962	263
1963	470
1964	457
1965	748
1966	626
1967	313
1968	334
1969	636
1970	1,241
1971	475
1972	1,046
1973	871
1974	536
1975	380
1976	477
1977	708
1978	1,155
1979	964
1980	926
1981	1,352
1982	588
1983	1,234
1984	764
1985	554
1986	791
1987	1,025
1988	1,015
1989	973
1990	914
1991	812
1992	1,562
1993	866
1994	773
1995	1,247
1996	1,141
1997	849
1998	1,674
1999	814
2000	1,230
2001	889
2002	990
2003	1,250
2004	694
2005	1,420
2006	1,479
2007	1,145
2008	989
2009	1,306
2010	1,148
2011	1,414
2012	815
2013	526
2014	762
2015	704
2016	645
2017	433
2018	942
2019	755
2020	363
2021	574
2022	866
2023	816
2024	873
2025	881
2026	874

Download the Data

Data for records on 1927-07-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	126
10 to 20	21
20 to 30	8
30 to 40	0
40 to 50	1