Weather Records on 27 September 1939

572 weather records were set or tied worldwide on 27 September 1939. Highest significance: Cherrapunji, IN.

Key Facts for 27 September 1939

On 27 September 1939, 572 weather records were set or tied at long-record stations worldwide.
167 were record highs and 181 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 34 monthly and 538 daily.
Cherrapunji set a daily record precipitation of 448.6 mm (17.7 in) on 27 September 1939.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 450 records.

Record Map

572 stations

572 station records on 27 September 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cherrapunji	India	Record daily precipitation	448.6 mm (17.7 in)	54 of 100 (Notable)
Upper Shillong	India	Record daily precipitation	184.4 mm (7.3 in)	53 of 100 (Notable)
Cherrapunji/P.S.	India	Record daily precipitation	393.7 mm (15.5 in)	52 of 100 (Notable)
Mankachar	India	Record daily precipitation	163.6 mm (6.4 in)	51 of 100 (Notable)
Borio	India	Record daily precipitation	156.5 mm (6.2 in)	51 of 100 (Notable)
Shillong	India	Record daily precipitation	128.8 mm (5.1 in)	51 of 100 (Notable)
Ekaterinburg	Russia	Record daily precipitation	27.4 mm (1.1 in)	51 of 100 (Notable)
Amarpara	India	Record daily precipitation	158.0 mm (6.2 in)	50 of 100 (Notable)
Dalu	India	Record daily precipitation	194.1 mm (7.6 in)	50 of 100 (Notable)
Tallapoosa 2 N	United States	Record daily precipitation	101.6 mm (4.0 in)	50 of 100 (Notable)
Jowai	India	Record daily precipitation	207.3 mm (8.2 in)	49 of 100 (Notable)
Sadiya India	India	Record daily precipitation	94.7 mm (3.7 in)	43 of 100 (Notable)
Dahlonega 4WSW	United States	Record daily precipitation	74.7 mm (2.9 in)	43 of 100 (Notable)
Fayetteville (Pwc)	United States	Record daily precipitation	66.8 mm (2.6 in)	43 of 100 (Notable)
Nalbari	India	Record daily precipitation	101.6 mm (4.0 in)	42 of 100 (Notable)
Thelangerin East	Australia	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Goalpara	India	Record daily precipitation	106.7 mm (4.2 in)	39 of 100 (Notable)
Monticello	United States	Record daily precipitation	62.7 mm (2.5 in)	38 of 100 (Notable)
Matamoras	United States	Record daily precipitation	46.2 mm (1.8 in)	38 of 100 (Notable)
Little Mtn	United States	Record daily precipitation	80.5 mm (3.2 in)	38 of 100 (Notable)
Saint John	Canada	Record low minimum temperature	-0.6 C (30.9 F)	36 of 100 (Notable)
Covington	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Rome	United States	Record daily precipitation	61.0 mm (2.4 in)	35 of 100 (Notable)
Addison	United States	Record daily precipitation	46.2 mm (1.8 in)	35 of 100 (Notable)
Montrose	United States	Record daily precipitation	40.6 mm (1.6 in)	35 of 100 (Notable)
Waterbury	United States	Record daily precipitation	48.3 mm (1.9 in)	34 of 100 (Routine)
Hajo	India	Record daily precipitation	88.6 mm (3.5 in)	33 of 100 (Routine)
Wappingers Falls	United States	Record daily precipitation	41.9 mm (1.6 in)	33 of 100 (Routine)
Hubbard	Canada	Record daily snowfall	10.2 cm (4.0 in)	32 of 100 (Routine)
Tezpur	India	Record daily precipitation	45.0 mm (1.8 in)	32 of 100 (Routine)
Chhaygaon	India	Record daily precipitation	101.6 mm (4.0 in)	32 of 100 (Routine)
Florence #1	United States	Record daily precipitation	53.8 mm (2.1 in)	32 of 100 (Routine)
Arantangi	India	Record daily precipitation	62.5 mm (2.5 in)	31 of 100 (Routine)
Mangaldai	India	Record daily precipitation	67.3 mm (2.6 in)	30 of 100 (Routine)
Storrs	United States	Record daily precipitation	36.3 mm (1.4 in)	30 of 100 (Routine)
Concord	United States	Record daily precipitation	39.1 mm (1.5 in)	30 of 100 (Routine)
Dewan	India	Record daily precipitation	101.3 mm (4.0 in)	29 of 100 (Routine)
Mandakata	India	Record daily precipitation	76.2 mm (3.0 in)	29 of 100 (Routine)
Waterbury	United States	Record low maximum temperature	11.7 C (53.1 F)	29 of 100 (Routine)
Nashua 2 NNW	United States	Record low maximum temperature	8.9 C (48.0 F)	29 of 100 (Routine)
Brockville	Canada	Record low minimum temperature	-0.6 C (30.9 F)	28 of 100 (Routine)
Fall River	United States	Record daily precipitation	31.5 mm (1.2 in)	28 of 100 (Routine)
Franklin	United States	Record daily precipitation	49.5 mm (1.9 in)	28 of 100 (Routine)
Port Jervis	United States	Record low maximum temperature	10.0 C (50.0 F)	28 of 100 (Routine)
Cornwall	United States	Record low maximum temperature	7.8 C (46.0 F)	28 of 100 (Routine)
Lakhipur	India	Record daily precipitation	80.3 mm (3.2 in)	27 of 100 (Routine)
Gauhati Obsy	India	Record daily precipitation	80.0 mm (3.1 in)	27 of 100 (Routine)
Patacharkuchi	India	Record daily precipitation	61.0 mm (2.4 in)	27 of 100 (Routine)
Gidhour	India	Record daily precipitation	90.2 mm (3.6 in)	27 of 100 (Routine)
Amherst	United States	Record low maximum temperature	7.8 C (46.0 F)	27 of 100 (Routine)
Lawrenceville 2 S	United States	Record daily precipitation	44.5 mm (1.8 in)	27 of 100 (Routine)
Weissenburg	Germany	Record low maximum temperature	8.7 C (47.7 F)	26 of 100 (Routine)
Palasbari	India	Record daily precipitation	96.5 mm (3.8 in)	26 of 100 (Routine)
Gogri	India	Record daily precipitation	87.6 mm (3.4 in)	26 of 100 (Routine)
Rumford	United States	Record low minimum temperature	-2.2 C (28.0 F)	26 of 100 (Routine)
Princess Anne	United States	Record daily precipitation	38.9 mm (1.5 in)	26 of 100 (Routine)
Towanda 1 S	United States	Record daily precipitation	40.6 mm (1.6 in)	26 of 100 (Routine)
Norway House	Canada	Record low maximum temperature	-0.6 C (30.9 F)	25 of 100 (Routine)
Heinersreuth-Vollhof	Germany	Record low maximum temperature	8.6 C (47.5 F)	25 of 100 (Routine)
Albany 3 SE	United States	Record daily precipitation	55.1 mm (2.2 in)	25 of 100 (Routine)

Counts by Type and Timescale

572 records

Records set or tied on 27 September 1939 by type: Highest daily maximum 75, Lowest daily maximum 108, Highest daily minimum 92, Lowest daily minimum 73, Heaviest daily rainfall 215, Heaviest daily snowfall 9.

Records on 27 September 1939 by type
Record type	Records
Highest daily maximum	75
Lowest daily maximum	108
Highest daily minimum	92
Lowest daily minimum	73
Heaviest daily rainfall	215
Heaviest daily snowfall	9
Deepest snow cover	0

Records on 27 September 1939 by timescale: all-time 0, monthly 34, daily 538.

How Much Records Were Beaten By

444 broken records

Margins by which the 444 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 340.1. Ties are not counted.

Top 20 by Significance

27 September 1939

Top 20 records on 27 September 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1939	Cherrapunji, IN	daily rain	448.6 mm (17.7 in)	340.1 mm (13.4 in)	36 years	54 of 100 (Notable)
27 September 1939	Upper Shillong, IN	daily rain	184.4 mm (7.3 in)	98.5 mm (3.9 in)	36 years	53 of 100 (Notable)
27 September 1939	Cherrapunji/P.S., IN	daily rain	393.7 mm (15.5 in)	285.2 mm (11.2 in)	36 years	52 of 100 (Notable)
27 September 1939	Mankachar, IN	daily rain	163.6 mm (6.4 in)	111.0 mm (4.4 in)	32 years	51 of 100 (Notable)
27 September 1939	Borio, IN	daily rain	156.5 mm (6.2 in)	120.4 mm (4.7 in)	29 years	51 of 100 (Notable)
27 September 1939	Shillong, IN	daily rain	128.8 mm (5.1 in)	64.8 mm (2.6 in)	36 years	51 of 100 (Notable)
27 September 1939	Ekaterinburg, RU	daily rain	27.4 mm (1.1 in)	20.4 mm (0.8 in)	20 years	51 of 100 (Notable)
27 September 1939	Amarpara, IN	daily rain	158.0 mm (6.2 in)	106.2 mm (4.2 in)	24 years	50 of 100 (Notable)
27 September 1939	Dalu, IN	daily rain	194.1 mm (7.6 in)	116.4 mm (4.6 in)	25 years	50 of 100 (Notable)
27 September 1939	Tallapoosa 2 N, US	daily rain	101.6 mm (4.0 in)	91.4 mm (3.6 in)	20 years	50 of 100 (Notable)
27 September 1939	Jowai, IN	daily rain	207.3 mm (8.2 in)	126.3 mm (5.0 in)	24 years	49 of 100 (Notable)
27 September 1939	Sadiya India, IN	daily rain	94.7 mm (3.7 in)	65.5 mm (2.6 in)	36 years	43 of 100 (Notable)
27 September 1939	Dahlonega 4WSW, US	daily rain	74.7 mm (2.9 in)	50.3 mm (2.0 in)	21 years	43 of 100 (Notable)
27 September 1939	Fayetteville (Pwc), US	daily rain	66.8 mm (2.6 in)	41.4 mm (1.6 in)	61 years	43 of 100 (Notable)
27 September 1939	Nalbari, IN	daily rain	101.6 mm (4.0 in)	72.4 mm (2.9 in)	28 years	42 of 100 (Notable)
27 September 1939	Thelangerin East, AU	daily rain	25.4 mm (1.0 in)	14.0 mm (0.6 in)	59 years	40 of 100 (Notable)
27 September 1939	Goalpara, IN	daily rain	106.7 mm (4.2 in)	62.5 mm (2.5 in)	36 years	39 of 100 (Notable)
27 September 1939	Monticello, US	daily rain	62.7 mm (2.5 in)	45.7 mm (1.8 in)	8 years	38 of 100 (Notable)
27 September 1939	Matamoras, US	daily rain	46.2 mm (1.8 in)	36.8 mm (1.4 in)	20 years	38 of 100 (Notable)
27 September 1939	Little Mtn, US	daily rain	80.5 mm (3.2 in)	62.7 mm (2.5 in)	14 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

1799 to 1939

Records set or tied on this calendar date in each year from 1799 to 1939. 1939 had 572 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 1939-09-27: 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 50	426
50 to 100	10
100 to 150	6
150 to 200	0
200 to 250	0
250 to 300	1
300 to 350	1