Weather Records on 15 July 1927

151 weather records were set or tied worldwide on 15 July 1927. Highest significance: Calgary Int'l A, CA.

Key Facts for 15 July 1927

On 15 July 1927, 151 weather records were set or tied at long-record stations worldwide.
82 were record highs and 22 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 2 monthly and 148 daily.
Calgary Int'l A set an all-time record daily precipitation of 95.3 mm (3.8 in) on 15 July 1927.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 457 records.

Record Map

151 stations

151 station records on 15 July 1927 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 July 1927: highest significance records shown on the map
Station	Country	Type	Value	Significance
Calgary Int'l A	Canada	Record daily precipitation	95.3 mm (3.8 in)	60 of 100 (Major)
Glasgow #2	United States	Record daily precipitation	34.5 mm (1.4 in)	37 of 100 (Notable)
Guelph Oac	Canada	Record daily precipitation	36.1 mm (1.4 in)	36 of 100 (Notable)
Teterow	Germany	Record daily precipitation	36.0 mm (1.4 in)	36 of 100 (Notable)
Roermond	Netherlands	Record daily precipitation	30.0 mm (1.2 in)	35 of 100 (Notable)
Concord	United States	Record daily precipitation	49.8 mm (2.0 in)	35 of 100 (Notable)
Arthur City	United States	Record daily precipitation	63.5 mm (2.5 in)	35 of 100 (Notable)
Georgetown	Canada	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Montevideo 1SW	United States	Record daily precipitation	43.4 mm (1.7 in)	34 of 100 (Routine)
Watford	Canada	Record daily precipitation	56.1 mm (2.2 in)	33 of 100 (Routine)
Toronto Deer Park	Canada	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Alton	Canada	Record daily precipitation	40.6 mm (1.6 in)	27 of 100 (Routine)
Ft Morgan	United States	Record low minimum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
Logansport Cicott St	United States	Record daily precipitation	55.9 mm (2.2 in)	26 of 100 (Routine)
Stoney Creek	Canada	Record daily precipitation	26.7 mm (1.1 in)	25 of 100 (Routine)
Medicine Hat A	Canada	Record daily precipitation	38.4 mm (1.5 in)	24 of 100 (Routine)
Brocken	Germany	Record daily precipitation	43.3 mm (1.7 in)	23 of 100 (Routine)
Cooperstown	United States	Record daily precipitation	42.2 mm (1.7 in)	23 of 100 (Routine)
Burlington	United States	Record high maximum temperature	38.3 C (100.9 F)	21 of 100 (Routine)
Fort Macleod	Canada	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Visby_Flygplats	Sweden	Record high maximum temperature	27.7 C (81.9 F)	20 of 100 (Routine)
Peterborough	Canada	Record daily precipitation	24.6 mm (1.0 in)	19 of 100 (Routine)
Aberdeen	United States	Record high maximum temperature	39.4 C (102.9 F)	19 of 100 (Routine)
Fort Macleod	Canada	Record low maximum temperature	13.3 C (55.9 F)	18 of 100 (Routine)
Stockholm	Sweden	Record high minimum temperature	19.5 C (67.1 F)	18 of 100 (Routine)
Jefferson City Wtp	United States	Record daily precipitation	54.9 mm (2.2 in)	18 of 100 (Routine)
Zagreb-Gric	Croatia	Record high minimum temperature	20.4 C (68.7 F)	17 of 100 (Routine)
Santa Cruz	United States	Record low maximum temperature	16.7 C (62.1 F)	17 of 100 (Routine)
Vincennes 4 E	United States	Record daily precipitation	34.5 mm (1.4 in)	17 of 100 (Routine)
Salem	United States	Record daily precipitation	17.5 mm (0.7 in)	16 of 100 (Routine)
Mohonk Lake	United States	Record high maximum temperature	32.2 C (90.0 F)	16 of 100 (Routine)
Fredericksburg Np	United States	Record high maximum temperature	36.1 C (97.0 F)	16 of 100 (Routine)
Brisbane Regional Office	Australia	Record high maximum temperature	25.2 C (77.4 F)	15 of 100 (Routine)
Boras	Sweden	Record high minimum temperature	16.0 C (60.8 F)	15 of 100 (Routine)
W Pt	United States	Record high maximum temperature	36.7 C (98.1 F)	15 of 100 (Routine)
Lyndoch	Australia	Record daily precipitation	13.7 mm (0.5 in)	14 of 100 (Routine)
Weimar	Germany	Record daily precipitation	17.5 mm (0.7 in)	14 of 100 (Routine)
Anna 4 N	United States	Record daily precipitation	39.4 mm (1.6 in)	14 of 100 (Routine)
Frederick Police Brks	United States	Record high maximum temperature	37.2 C (99.0 F)	14 of 100 (Routine)
Ann Arbor U of Mich	United States	Record daily precipitation	35.6 mm (1.4 in)	14 of 100 (Routine)
Howell Wwtp	United States	Record daily precipitation	24.9 mm (1.0 in)	14 of 100 (Routine)
Pine Rvr Dam	United States	Record daily precipitation	26.9 mm (1.1 in)	14 of 100 (Routine)
Billings Wtp	United States	Record daily precipitation	17.8 mm (0.7 in)	14 of 100 (Routine)
Hightstown 2 W	United States	Record high maximum temperature	36.1 C (97.0 F)	14 of 100 (Routine)
Tewantin Post Office	Australia	Record high maximum temperature	24.4 C (75.9 F)	13 of 100 (Routine)
Ozark	United States	Record low maximum temperature	27.8 C (82.0 F)	13 of 100 (Routine)
Millsboro	United States	Record high maximum temperature	33.9 C (93.0 F)	13 of 100 (Routine)
Bay Saint Louis	United States	Record high minimum temperature	27.2 C (81.0 F)	13 of 100 (Routine)
Columbus 3 NE	United States	Record daily precipitation	24.9 mm (1.0 in)	13 of 100 (Routine)
Plainfield	United States	Record high maximum temperature	35.0 C (95.0 F)	13 of 100 (Routine)
Northfield	United States	Record high minimum temperature	19.4 C (66.9 F)	13 of 100 (Routine)
El Paso	United States	Record high maximum temperature	38.9 C (102.0 F)	13 of 100 (Routine)
Storrs	United States	Record high minimum temperature	21.1 C (70.0 F)	12 of 100 (Routine)
Las Vegas 2 NW	United States	Record low minimum temperature	8.9 C (48.0 F)	12 of 100 (Routine)
Moncure 3 SE	United States	Record high minimum temperature	24.4 C (75.9 F)	12 of 100 (Routine)
Eugene	United States	Record low minimum temperature	7.2 C (45.0 F)	12 of 100 (Routine)
W Chester 2 NW	United States	Record high maximum temperature	34.4 C (93.9 F)	12 of 100 (Routine)
Perryville	United States	Record high minimum temperature	23.3 C (73.9 F)	12 of 100 (Routine)
Clarksville	United States	Record daily precipitation	44.5 mm (1.8 in)	12 of 100 (Routine)
Woodstock 2 NE	United States	Record high maximum temperature	37.2 C (99.0 F)	12 of 100 (Routine)

Counts by Type and Timescale

151 records

Records set or tied on 15 July 1927 by type: Highest daily maximum 38, Lowest daily maximum 11, Highest daily minimum 44, Lowest daily minimum 11, Heaviest daily rainfall 47.

Records on 15 July 1927 by type
Record type	Records
Highest daily maximum	38
Lowest daily maximum	11
Highest daily minimum	44
Lowest daily minimum	11
Heaviest daily rainfall	47
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 July 1927 by timescale: all-time 1, monthly 2, daily 148.

How Much Records Were Beaten By

104 broken records

Margins by which the 104 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 54.6. Ties are not counted.

Top 20 by Significance

15 July 1927

Top 20 records on 15 July 1927 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 July 1927	Calgary Int'l A, CA	all-time rain	95.3 mm (3.8 in)	22.7 mm (0.9 in)	26 years	60 of 100 (Major)
15 July 1927	Glasgow #2, US	daily rain	34.5 mm (1.4 in)	19.3 mm (0.8 in)	28 years	37 of 100 (Notable)
15 July 1927	Guelph Oac, CA	daily rain	36.1 mm (1.4 in)	22.4 mm (0.9 in)	43 years	36 of 100 (Notable)
15 July 1927	Teterow, DE	daily rain	36.0 mm (1.4 in)	24.0 mm (0.9 in)	4 years	36 of 100 (Notable)
15 July 1927	Roermond, NL	daily rain	30.0 mm (1.2 in)	11.0 mm (0.4 in)	39 years	35 of 100 (Notable)
15 July 1927	Concord, US	daily rain	49.8 mm (2.0 in)	21.9 mm (0.9 in)	40 years	35 of 100 (Notable)
15 July 1927	Arthur City, US	daily rain	63.5 mm (2.5 in)	54.6 mm (2.1 in)	5 years	35 of 100 (Notable)
15 July 1927	Georgetown, CA	daily rain	38.1 mm (1.5 in)	18.5 mm (0.7 in)	34 years	34 of 100 (Routine)
15 July 1927	Montevideo 1SW, US	daily rain	43.4 mm (1.7 in)	33.5 mm (1.3 in)	20 years	34 of 100 (Routine)
15 July 1927	Watford, CA	daily rain	56.1 mm (2.2 in)	34.3 mm (1.4 in)	14 years	33 of 100 (Routine)
15 July 1927	Toronto Deer Park, CA	daily rain	38.1 mm (1.5 in)	20.8 mm (0.8 in)	24 years	31 of 100 (Routine)
15 July 1927	Alton, CA	daily rain	40.6 mm (1.6 in)	16.0 mm (0.6 in)	35 years	27 of 100 (Routine)
15 July 1927	Ft Morgan, US	daily low min	5.6 C (42.1 F)	4.4 C (7.9 F)	29 years	26 of 100 (Routine)
15 July 1927	Logansport Cicott St, US	daily rain	55.9 mm (2.2 in)	27.2 mm (1.1 in)	16 years	26 of 100 (Routine)
15 July 1927	Stoney Creek, CA	daily rain	26.7 mm (1.1 in)	12.5 mm (0.5 in)	35 years	25 of 100 (Routine)
15 July 1927	Medicine Hat A, CA	daily rain	38.4 mm (1.5 in)	6.9 mm (0.27 in)	42 years	24 of 100 (Routine)
15 July 1927	Brocken, DE	daily rain	43.3 mm (1.7 in)	17.3 mm (0.7 in)	12 years	23 of 100 (Routine)
15 July 1927	Cooperstown, US	daily rain	42.2 mm (1.7 in)	17.3 mm (0.7 in)	17 years	23 of 100 (Routine)
15 July 1927	Burlington, US	daily high max	38.3 C (100.9 F)	3.3 C (5.9 F)	26 years	21 of 100 (Routine)
15 July 1927	Fort Macleod, CA	daily rain	18.5 mm (0.7 in)	16.0 mm (0.6 in)	20 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

1793 to 1927

Records set or tied on this calendar date in each year from 1793 to 1927. 1927 had 151 records.

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

Records on 07-15 in each year
Year	Records
1793	1
1802	1
1808	1
1824	2
1829	1
1832	1
1833	1
1838	1
1839	1
1840	2
1866	1
1868	2
1874	1
1876	1
1877	2
1879	3
1880	1
1881	2
1883	2
1884	2
1885	1
1886	2
1888	1
1889	1
1890	5
1891	4
1892	4
1893	3
1894	6
1895	4
1896	2
1897	2
1898	10
1899	1
1900	1
1901	7
1902	4
1903	24
1904	9
1905	1
1906	10
1907	8
1908	7
1909	7
1910	14
1911	11
1912	44
1913	19
1914	35
1915	34
1916	27
1917	134
1918	33
1919	59
1920	78
1921	55
1922	111
1923	120
1924	126
1925	137
1926	487
1927	151
1928	367
1929	213
1930	503
1931	591
1932	649
1933	205
1934	554
1935	208
1936	905
1937	279
1938	227
1939	394
1940	320
1941	444
1942	275
1943	338
1944	228
1945	693
1946	421
1947	373
1948	397
1949	455
1950	503
1951	606
1952	825
1953	398
1954	784
1955	612
1956	351
1957	304
1958	859
1959	411
1960	576
1961	386
1962	724
1963	291
1964	670
1965	282
1966	494
1967	1,419
1968	661
1969	670
1970	542
1971	552
1972	681
1973	800
1974	692
1975	869
1976	790
1977	766
1978	815
1979	585
1980	1,168
1981	646
1982	938
1983	1,241
1984	841
1985	793
1986	773
1987	968
1988	1,157
1989	827
1990	1,202
1991	589
1992	904
1993	1,198
1994	1,027
1995	1,347
1996	1,076
1997	688
1998	1,170
1999	1,428
2000	1,276
2001	1,004
2002	1,177
2003	1,256
2004	714
2005	932
2006	1,535
2007	1,171
2008	532
2009	816
2010	941
2011	989
2012	927
2013	761
2014	1,016
2015	547
2016	672
2017	467
2018	645
2019	561
2020	614
2021	674
2022	621
2023	1,157
2024	823
2025	720
2026	961

Download the Data

Data for records on 1927-07-15: 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).

Histogram of margins by which records were beaten on 15 July 1927
Margin	Records
0 to 10	81
10 to 20	14
20 to 30	6
30 to 40	2
40 to 50	0
50 to 60	1