Weather Records on 27 September 1946

387 weather records were set or tied worldwide on 27 September 1946. Highest significance: Dunderlandsdalen, NO.

Key Facts for 27 September 1946

On 27 September 1946, 387 weather records were set or tied at long-record stations worldwide.
252 were record highs and 34 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 381 daily.
Dunderlandsdalen set a daily record precipitation of 64.2 mm (2.5 in) on 27 September 1946.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 451 records.

Record Map

387 stations

387 station records on 27 September 1946 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1946: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dunderlandsdalen	Norway	Record daily precipitation	64.2 mm (2.5 in)	56 of 100 (Notable)
Whitewood	Canada	Record daily precipitation	43.7 mm (1.7 in)	53 of 100 (Notable)
Manamathurai	India	Record daily precipitation	111.0 mm (4.4 in)	51 of 100 (Notable)
Birtle	Canada	Record daily precipitation	41.4 mm (1.6 in)	48 of 100 (Notable)
Fort Frances	Canada	Record daily precipitation	61.0 mm (2.4 in)	47 of 100 (Notable)
Mettupalayam	India	Record daily precipitation	51.3 mm (2.0 in)	44 of 100 (Notable)
Lufkin Angelina Co AP	United States	Record daily precipitation	58.4 mm (2.3 in)	43 of 100 (Notable)
Kennecott	United States	Record low minimum temperature	-10.0 C (14.0 F)	34 of 100 (Routine)
Omalur	India	Record daily precipitation	71.1 mm (2.8 in)	33 of 100 (Routine)
Steigen	Norway	Record daily precipitation	60.2 mm (2.4 in)	32 of 100 (Routine)
Willcox	United States	Record daily precipitation	42.4 mm (1.7 in)	32 of 100 (Routine)
Two Harbors	United States	Record daily precipitation	42.7 mm (1.7 in)	32 of 100 (Routine)
Goderich	Canada	Record high maximum temperature	29.4 C (84.9 F)	31 of 100 (Routine)
Menard	United States	Record daily precipitation	140.7 mm (5.5 in)	31 of 100 (Routine)
Tarkio	United States	Record daily precipitation	63.5 mm (2.5 in)	29 of 100 (Routine)
Ignace	Canada	Record daily precipitation	25.7 mm (1.0 in)	28 of 100 (Routine)
Bemidji	United States	Record daily precipitation	26.9 mm (1.1 in)	27 of 100 (Routine)
Uvalde	United States	Record daily precipitation	122.4 mm (4.8 in)	27 of 100 (Routine)
Krakmo	Norway	Record daily precipitation	64.6 mm (2.5 in)	26 of 100 (Routine)
Luling	United States	Record daily precipitation	34.5 mm (1.4 in)	26 of 100 (Routine)
Parker	United States	Record high minimum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Fischers Store	United States	Record daily precipitation	76.2 mm (3.0 in)	25 of 100 (Routine)
La Grange	United States	Record daily precipitation	67.8 mm (2.7 in)	25 of 100 (Routine)
Mannington 1 N	United States	Record high maximum temperature	33.3 C (91.9 F)	25 of 100 (Routine)
Shiggaon	India	Record daily precipitation	41.1 mm (1.6 in)	24 of 100 (Routine)
Sindgi	India	Record daily precipitation	42.2 mm (1.7 in)	23 of 100 (Routine)
St Peter	United States	Record high minimum temperature	17.8 C (64.0 F)	23 of 100 (Routine)
Austin Montopolis Brg	United States	Record daily precipitation	61.0 mm (2.4 in)	23 of 100 (Routine)
Yuma Wb City	United States	Record high minimum temperature	26.1 C (79.0 F)	23 of 100 (Routine)
Meadowlands 9 S	United States	Record daily precipitation	38.4 mm (1.5 in)	22 of 100 (Routine)
Fremont	United States	Record high minimum temperature	20.6 C (69.1 F)	22 of 100 (Routine)
Wakefield 3NW	United States	Record high minimum temperature	18.9 C (66.0 F)	22 of 100 (Routine)
Wellsburg Wtr Trmt Pl	United States	Record high maximum temperature	33.3 C (91.9 F)	22 of 100 (Routine)
West Souburg	Netherlands	Record high maximum temperature	24.3 C (75.7 F)	21 of 100 (Routine)
Riksgransen	Sweden	Record high maximum temperature	14.0 C (57.2 F)	21 of 100 (Routine)
Represa	United States	Record high maximum temperature	32.2 C (90.0 F)	21 of 100 (Routine)
Alton	United States	Record daily precipitation	25.9 mm (1.0 in)	21 of 100 (Routine)
Grand Coteau	United States	Record high minimum temperature	23.9 C (75.0 F)	21 of 100 (Routine)
Kalamazoo State Hospital	United States	Record high maximum temperature	30.6 C (87.1 F)	21 of 100 (Routine)
Virginia	United States	Record daily precipitation	54.6 mm (2.1 in)	21 of 100 (Routine)
Mountainair	United States	Record high maximum temperature	31.1 C (88.0 F)	21 of 100 (Routine)
Tres Piedras	United States	Record high maximum temperature	25.6 C (78.1 F)	21 of 100 (Routine)
Penn Yan	United States	Record high maximum temperature	29.4 C (84.9 F)	21 of 100 (Routine)
Centerville 6 SE	United States	Record high maximum temperature	33.3 C (91.9 F)	21 of 100 (Routine)
Moccasin Exp STN	United States	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Minnedosa	Canada	Record daily precipitation	8.6 mm (0.34 in)	20 of 100 (Routine)
Leech Lake	United States	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Crosby	United States	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Globe Rs	United States	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Pokegama Dam	United States	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Sonnblick	Austria	Record high minimum temperature	2.5 C (36.5 F)	20 of 100 (Routine)
Fernie	Canada	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Aseral	Norway	Record daily precipitation	28.0 mm (1.1 in)	20 of 100 (Routine)
Urjupinsk	Russia	Record daily precipitation	5.2 mm (0.20 in)	20 of 100 (Routine)
Aurora Water	United States	Record high maximum temperature	31.1 C (88.0 F)	20 of 100 (Routine)
Grundy Ctr	United States	Record high minimum temperature	17.2 C (63.0 F)	20 of 100 (Routine)
Harlan	United States	Record high minimum temperature	18.9 C (66.0 F)	20 of 100 (Routine)
Red Lake Falls	United States	Record daily precipitation	28.4 mm (1.1 in)	20 of 100 (Routine)
Table Rock 4N	United States	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Cambridge St Hospital	United States	Record high maximum temperature	31.7 C (89.1 F)	20 of 100 (Routine)

Counts by Type and Timescale

387 records

Records set or tied on 27 September 1946 by type: Highest daily maximum 147, Lowest daily maximum 7, Highest daily minimum 105, Lowest daily minimum 27, Heaviest daily rainfall 100, Heaviest daily snowfall 1.

Records on 27 September 1946 by type
Record type	Records
Highest daily maximum	147
Lowest daily maximum	7
Highest daily minimum	105
Lowest daily minimum	27
Heaviest daily rainfall	100
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 27 September 1946 by timescale: all-time 0, monthly 6, daily 381.

How Much Records Were Beaten By

287 broken records

Margins by which the 287 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 86.9. Ties are not counted.

Top 20 by Significance

27 September 1946

Top 20 records on 27 September 1946 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1946	Dunderlandsdalen, NO	daily rain	64.2 mm (2.5 in)	33.7 mm (1.3 in)	40 years	56 of 100 (Notable)
27 September 1946	Whitewood, CA	daily rain	43.7 mm (1.7 in)	34.0 mm (1.3 in)	31 years	53 of 100 (Notable)
27 September 1946	Manamathurai, IN	daily rain	111.0 mm (4.4 in)	86.9 mm (3.4 in)	24 years	51 of 100 (Notable)
27 September 1946	Birtle, CA	daily rain	41.4 mm (1.6 in)	36.1 mm (1.4 in)	7 years	48 of 100 (Notable)
27 September 1946	Fort Frances, CA	daily rain	61.0 mm (2.4 in)	50.3 mm (2.0 in)	7 years	47 of 100 (Notable)
27 September 1946	Mettupalayam, IN	daily rain	51.3 mm (2.0 in)	43.4 mm (1.7 in)	39 years	44 of 100 (Notable)
27 September 1946	Lufkin Angelina Co AP, US	daily rain	58.4 mm (2.3 in)	44.4 mm (1.7 in)	32 years	43 of 100 (Notable)
27 September 1946	Kennecott, US	daily low min	-10.0 C (14.0 F)	5.6 C (10.1 F)	36 years	34 of 100 (Routine)
27 September 1946	Omalur, IN	daily rain	71.1 mm (2.8 in)	32.0 mm (1.3 in)	32 years	33 of 100 (Routine)
27 September 1946	Steigen, NO	monthly rain	60.2 mm (2.4 in)	9.1 mm (0.36 in)	27 years	32 of 100 (Routine)
27 September 1946	Willcox, US	daily rain	42.4 mm (1.7 in)	20.8 mm (0.8 in)	9 years	32 of 100 (Routine)
27 September 1946	Two Harbors, US	daily rain	42.7 mm (1.7 in)	24.9 mm (1.0 in)	21 years	32 of 100 (Routine)
27 September 1946	Goderich, CA	daily high max	29.4 C (84.9 F)	1.1 C (2.0 F)	72 years	31 of 100 (Routine)
27 September 1946	Menard, US	daily rain	140.7 mm (5.5 in)	54.3 mm (2.1 in)	19 years	31 of 100 (Routine)
27 September 1946	Tarkio, US	daily rain	63.5 mm (2.5 in)	32.8 mm (1.3 in)	21 years	29 of 100 (Routine)
27 September 1946	Ignace, CA	daily rain	25.7 mm (1.0 in)	9.2 mm (0.36 in)	54 years	28 of 100 (Routine)
27 September 1946	Bemidji, US	daily rain	26.9 mm (1.1 in)	10.6 mm (0.4 in)	41 years	27 of 100 (Routine)
27 September 1946	Uvalde, US	daily rain	122.4 mm (4.8 in)	44.9 mm (1.8 in)	9 years	27 of 100 (Routine)
27 September 1946	Krakmo, NO	daily rain	64.6 mm (2.5 in)	14.8 mm (0.6 in)	24 years	26 of 100 (Routine)
27 September 1946	Luling, US	daily rain	34.5 mm (1.4 in)	12.7 mm (0.5 in)	44 years	26 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 1946

Records set or tied on this calendar date in each year from 1799 to 1946. 1946 had 387 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 1946-09-27: 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 20	265
20 to 40	15
40 to 60	6
60 to 80	0
80 to 100	1