Weather Records on 27 September 1940

706 weather records were set or tied worldwide on 27 September 1940. Highest significance: Headworks Portland Wtr B, US.

Key Facts for 27 September 1940

On 27 September 1940, 706 weather records were set or tied at long-record stations worldwide.
60 were record highs and 464 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 81 monthly and 625 daily.
Headworks Portland Wtr B set a daily record precipitation of 80.3 mm (3.2 in) on 27 September 1940.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 449 records.

Record Map

706 stations

706 station records on 27 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Headworks Portland Wtr B	United States	Record daily precipitation	80.3 mm (3.2 in)	55 of 100 (Notable)
Stockdill Rch	United States	Record daily precipitation	31.2 mm (1.2 in)	48 of 100 (Notable)
Jefferson	United States	Record daily precipitation	38.1 mm (1.5 in)	41 of 100 (Notable)
Bainbridge	United States	Record low maximum temperature	14.4 C (57.9 F)	36 of 100 (Notable)
Brunswick	United States	Record low maximum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Marion	United States	Record low minimum temperature	-1.1 C (30.0 F)	34 of 100 (Routine)
Cascade Locks	United States	Record daily precipitation	66.0 mm (2.6 in)	34 of 100 (Routine)
Tarcutta Post Office	Australia	Record daily precipitation	25.4 mm (1.0 in)	33 of 100 (Routine)
Blakely	United States	Record low maximum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Nargund	India	Record daily precipitation	87.4 mm (3.4 in)	32 of 100 (Routine)
Thomasville 7 NE	United States	Record low minimum temperature	8.9 C (48.0 F)	32 of 100 (Routine)
Willard 4 SW	United States	Record low maximum temperature	15.0 C (59.0 F)	32 of 100 (Routine)
Fernandina Beach	United States	Record low minimum temperature	13.9 C (57.0 F)	31 of 100 (Routine)
Marianna Sch For Boys	United States	Record low maximum temperature	17.2 C (63.0 F)	31 of 100 (Routine)
Dover 1 W	United States	Record low minimum temperature	-4.4 C (24.1 F)	31 of 100 (Routine)
Mudigere	India	Record daily precipitation	50.0 mm (2.0 in)	30 of 100 (Routine)
Ventspils	Latvia	Record daily precipitation	25.9 mm (1.0 in)	30 of 100 (Routine)
Jacksonville Wb City	United States	Record low maximum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Beaver Lake	Canada	Record daily precipitation	25.1 mm (1.0 in)	29 of 100 (Routine)
Eufaula	United States	Record low maximum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Madison	United States	Record low minimum temperature	10.0 C (50.0 F)	29 of 100 (Routine)
Quitman 2 NW	United States	Record low minimum temperature	9.4 C (48.9 F)	29 of 100 (Routine)
Brunswick	United States	Record low minimum temperature	11.7 C (53.1 F)	28 of 100 (Routine)
Holly Springs 2 N	United States	Record low minimum temperature	3.3 C (37.9 F)	28 of 100 (Routine)
Pearlington	United States	Record low maximum temperature	21.1 C (70.0 F)	28 of 100 (Routine)
Concord	United States	Record low minimum temperature	-1.1 C (30.0 F)	28 of 100 (Routine)
Marshall	United States	Record low minimum temperature	-1.7 C (28.9 F)	28 of 100 (Routine)
Summerville 4W	United States	Record low maximum temperature	13.9 C (57.0 F)	28 of 100 (Routine)
Cedar Key 1 WSW	United States	Record low minimum temperature	12.2 C (54.0 F)	27 of 100 (Routine)
Marianna Sch For Boys	United States	Record low minimum temperature	8.9 C (48.0 F)	27 of 100 (Routine)
Staunton Wtp	United States	Record low minimum temperature	-0.6 C (30.9 F)	27 of 100 (Routine)
Nieuwejaarsfontein	South Africa	Record daily precipitation	26.4 mm (1.0 in)	26 of 100 (Routine)
Albany 3 SE	United States	Record low maximum temperature	17.2 C (63.0 F)	26 of 100 (Routine)
Elizabeth	United States	Record low minimum temperature	-1.1 C (30.0 F)	26 of 100 (Routine)
Indian Mills 2 W	United States	Record low minimum temperature	-1.1 C (30.0 F)	26 of 100 (Routine)
Morganton	United States	Record low minimum temperature	0.6 C (33.1 F)	26 of 100 (Routine)
Prospect 2 SW	United States	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Johnstown	United States	Record low minimum temperature	-1.7 C (28.9 F)	26 of 100 (Routine)
Whiteriver 1 SW	United States	Record daily precipitation	26.2 mm (1.0 in)	25 of 100 (Routine)
Fernandina Beach	United States	Record low maximum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Monticello	United States	Record low minimum temperature	6.1 C (43.0 F)	25 of 100 (Routine)
W Pt	United States	Record low minimum temperature	5.0 C (41.0 F)	25 of 100 (Routine)
Fulton	United States	Record low minimum temperature	-1.1 C (30.0 F)	25 of 100 (Routine)
Lenoir	United States	Record low minimum temperature	0.0 C (32.0 F)	25 of 100 (Routine)
Jim Thorpe	United States	Record low minimum temperature	-2.8 C (27.0 F)	25 of 100 (Routine)
Ponce 4 E	Puerto Rico [United States]	Record high maximum temperature	34.4 C (93.9 F)	24 of 100 (Routine)
Skara 1	Sweden	Record daily precipitation	28.3 mm (1.1 in)	24 of 100 (Routine)
Carrabelle 1 NNW	United States	Record low minimum temperature	10.0 C (50.0 F)	24 of 100 (Routine)
Florence	United States	Record low minimum temperature	3.3 C (37.9 F)	23 of 100 (Routine)
Ozark 6 NNW	United States	Record low maximum temperature	17.2 C (63.0 F)	23 of 100 (Routine)
Brooksville Chin Hill	United States	Record low maximum temperature	25.0 C (77.0 F)	23 of 100 (Routine)
Madison	United States	Record low maximum temperature	17.2 C (63.0 F)	23 of 100 (Routine)
Columbus Dardc	United States	Record low minimum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Ft Gaines	United States	Record low maximum temperature	17.8 C (64.0 F)	23 of 100 (Routine)
Glennville 3NW	United States	Record low maximum temperature	17.8 C (64.0 F)	23 of 100 (Routine)
Glennville 3NW	United States	Record low minimum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Quitman 2 NW	United States	Record low maximum temperature	18.3 C (64.9 F)	23 of 100 (Routine)
Laurel	United States	Record low maximum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Detroit	United States	Record daily precipitation	34.8 mm (1.4 in)	23 of 100 (Routine)
Waco	United States	Record low minimum temperature	6.1 C (43.0 F)	23 of 100 (Routine)

Counts by Type and Timescale

706 records

Records set or tied on 27 September 1940 by type: Highest daily maximum 18, Lowest daily maximum 103, Highest daily minimum 42, Lowest daily minimum 361, Heaviest daily rainfall 182.

Records on 27 September 1940 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	103
Highest daily minimum	42
Lowest daily minimum	361
Heaviest daily rainfall	182
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 September 1940 by timescale: all-time 0, monthly 81, daily 625.

How Much Records Were Beaten By

541 broken records

Margins by which the 541 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 56.7. Ties are not counted.

Top 20 by Significance

27 September 1940

Top 20 records on 27 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1940	Headworks Portland Wtr B, US	daily rain	80.3 mm (3.2 in)	56.7 mm (2.2 in)	38 years	55 of 100 (Notable)
27 September 1940	Stockdill Rch, US	daily rain	31.2 mm (1.2 in)	24.8 mm (1.0 in)	18 years	48 of 100 (Notable)
27 September 1940	Jefferson, US	daily rain	38.1 mm (1.5 in)	25.4 mm (1.0 in)	18 years	41 of 100 (Notable)
27 September 1940	Bainbridge, US	monthly low max	14.4 C (57.9 F)	6.7 C (12.1 F)	16 years	36 of 100 (Notable)
27 September 1940	Brunswick, US	daily low max	18.3 C (64.9 F)	6.1 C (11.0 F)	42 years	34 of 100 (Routine)
27 September 1940	Marion, US	monthly low min	-1.1 C (30.0 F)	3.3 C (5.9 F)	40 years	34 of 100 (Routine)
27 September 1940	Cascade Locks, US	monthly rain	66.0 mm (2.6 in)	12.7 mm (0.5 in)	27 years	34 of 100 (Routine)
27 September 1940	Tarcutta Post Office, AU	daily rain	25.4 mm (1.0 in)	6.6 mm (0.26 in)	60 years	33 of 100 (Routine)
27 September 1940	Blakely, US	monthly low max	16.7 C (62.1 F)	2.7 C (4.9 F)	42 years	33 of 100 (Routine)
27 September 1940	Nargund, IN	daily rain	87.4 mm (3.4 in)	31.5 mm (1.2 in)	30 years	32 of 100 (Routine)
27 September 1940	Thomasville 7 NE, US	daily low min	8.9 C (48.0 F)	5.0 C (9.0 F)	31 years	32 of 100 (Routine)
27 September 1940	Willard 4 SW, US	monthly low max	15.0 C (59.0 F)	3.9 C (7.0 F)	31 years	32 of 100 (Routine)
27 September 1940	Fernandina Beach, US	daily low min	13.9 C (57.0 F)	2.8 C (5.0 F)	45 years	31 of 100 (Routine)
27 September 1940	Marianna Sch For Boys, US	monthly low max	17.2 C (63.0 F)	3.4 C (6.1 F)	25 years	31 of 100 (Routine)
27 September 1940	Dover 1 W, US	monthly low min	-4.4 C (24.1 F)	2.7 C (4.9 F)	40 years	31 of 100 (Routine)
27 September 1940	Mudigere, IN	daily rain	50.0 mm (2.0 in)	19.5 mm (0.8 in)	30 years	30 of 100 (Routine)
27 September 1940	Ventspils, LV	daily rain	25.9 mm (1.0 in)	10.8 mm (0.4 in)	16 years	30 of 100 (Routine)
27 September 1940	Jacksonville Wb City, US	daily low max	19.4 C (66.9 F)	3.9 C (7.0 F)	31 years	30 of 100 (Routine)
27 September 1940	Beaver Lake, CA	daily rain	25.1 mm (1.0 in)	12.4 mm (0.5 in)	23 years	29 of 100 (Routine)
27 September 1940	Eufaula, US	monthly low max	17.8 C (64.0 F)	1.1 C (2.0 F)	42 years	29 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

1799 to 1940

Records set or tied on this calendar date in each year from 1799 to 1940. 1940 had 706 records.

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

Records on 09-27 in each year
Year	Records
1799	1
1828	1
1836	2
1847	1
1851	1
1854	2
1855	2
1859	2
1866	2
1867	3
1874	1
1875	1
1877	2
1880	1
1881	4
1882	1
1885	5
1887	1
1890	3
1891	1
1892	1
1893	1
1894	5
1895	6
1896	1
1897	2
1898	4
1899	1
1900	5
1901	3
1902	12
1903	7
1904	12
1905	21
1906	21
1907	9
1908	36
1909	17
1910	20
1911	31
1912	25
1913	27
1914	24
1915	80
1916	57
1917	41
1918	58
1919	45
1920	54
1921	26
1922	111
1923	125
1924	115
1925	129
1926	581
1927	244
1928	288
1929	225
1930	178
1931	222
1932	194
1933	559
1934	298
1935	319
1936	435
1937	309
1938	366
1939	572
1940	706
1941	257
1942	1,353
1943	503
1944	323
1945	475
1946	387
1947	813
1948	405
1949	407
1950	223
1951	480
1952	539
1953	567
1954	507
1955	386
1956	825
1957	644
1958	585
1959	582
1960	337
1961	376
1962	352
1963	849
1964	724
1965	688
1966	426
1967	502
1968	286
1969	233
1970	773
1971	762
1972	989
1973	1,031
1974	408
1975	790
1976	905
1977	852
1978	773
1979	741
1980	559
1981	680
1982	1,076
1983	791
1984	1,297
1985	661
1986	1,772
1987	1,013
1988	494
1989	852
1990	379
1991	894
1992	659
1993	727
1994	764
1995	698
1996	1,468
1997	730
1998	1,774
1999	1,059
2000	1,031
2001	980
2002	992
2003	830
2004	665
2005	1,061
2006	596
2007	1,091
2008	659
2009	987
2010	1,153
2011	965
2012	624
2013	823
2014	813
2015	664
2016	600
2017	891
2018	600
2019	755
2020	659
2021	893
2022	642
2023	747
2024	1,449
2025	272
2026	358

Download the Data

Data for records on 1940-09-27: 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 10	505
10 to 20	32
20 to 30	2
30 to 40	1
40 to 50	0
50 to 60	1