Weather Records on 20 September 1930

102 weather records were set or tied worldwide on 20 September 1930. Highest significance: Hedrum, NO.

Key Facts for 20 September 1930

On 20 September 1930, 102 weather records were set or tied at long-record stations worldwide.
43 were record highs and 18 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 101 daily.
Hedrum set a daily record precipitation of 75.5 mm (3.0 in) on 20 September 1930.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 444 records.

Record Map

102 stations

102 station records on 20 September 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hedrum	Norway	Record daily precipitation	75.5 mm (3.0 in)	44 of 100 (Notable)
Gjerstad I Aust-Agder	Norway	Record daily precipitation	123.8 mm (4.9 in)	40 of 100 (Notable)
Kislovodsk	Russia	Record daily precipitation	33.4 mm (1.3 in)	40 of 100 (Notable)
Hattiesburg 5SW	United States	Record daily precipitation	79.8 mm (3.1 in)	37 of 100 (Notable)
Aseral	Norway	Record daily precipitation	70.0 mm (2.8 in)	33 of 100 (Routine)
Mykland	Norway	Record daily precipitation	55.0 mm (2.2 in)	31 of 100 (Routine)
Perth Regional Office	Australia	Record high minimum temperature	17.7 C (63.9 F)	27 of 100 (Routine)
Herefoss	Norway	Record daily precipitation	62.7 mm (2.5 in)	27 of 100 (Routine)
Hawkinsville	United States	Record daily precipitation	40.6 mm (1.6 in)	26 of 100 (Routine)
St Helena Island	Australia	Record daily precipitation	26.7 mm (1.1 in)	24 of 100 (Routine)
West Terschelling	Netherlands	Record daily precipitation	28.4 mm (1.1 in)	24 of 100 (Routine)
Griffin	United States	Record daily precipitation	35.6 mm (1.4 in)	21 of 100 (Routine)
La Ctr	United States	Record high minimum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Verhojansk	Russia	Record daily precipitation	24.0 mm (0.9 in)	20 of 100 (Routine)
Nerchinskij Zavod	Russia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Pembroke Eddy Match	Canada	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Nurnberg	Germany	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Bay Saint Louis	United States	Record low maximum temperature	26.1 C (79.0 F)	19 of 100 (Routine)
Mestad I Oddernes	Norway	Record daily precipitation	50.3 mm (2.0 in)	18 of 100 (Routine)
Kalmar_D	Sweden	Record daily precipitation	21.1 mm (0.8 in)	18 of 100 (Routine)
Coldwater	United States	Record daily precipitation	32.8 mm (1.3 in)	18 of 100 (Routine)
Durango	United States	Record high maximum temperature	29.4 C (84.9 F)	17 of 100 (Routine)
New Braunfels	United States	Record high maximum temperature	35.6 C (96.1 F)	17 of 100 (Routine)
Goodwater	United States	Record daily precipitation	38.9 mm (1.5 in)	16 of 100 (Routine)
Sheboygan	United States	Record high maximum temperature	30.6 C (87.1 F)	16 of 100 (Routine)
Hoorn	Netherlands	Record daily precipitation	20.8 mm (0.8 in)	15 of 100 (Routine)
Olands Sodra Udde	Sweden	Record daily precipitation	17.7 mm (0.7 in)	15 of 100 (Routine)
Bajramaly	Turkmenistan	Record low minimum temperature	2.0 C (35.6 F)	15 of 100 (Routine)
Thomasville	United States	Record daily precipitation	36.8 mm (1.4 in)	15 of 100 (Routine)
Gloversville	United States	Record high maximum temperature	31.7 C (89.1 F)	15 of 100 (Routine)
Lifjell	Norway	Record daily precipitation	35.0 mm (1.4 in)	14 of 100 (Routine)
Fall River	United States	Record high maximum temperature	27.8 C (82.0 F)	14 of 100 (Routine)
Provincetown 3 NW	United States	Record high maximum temperature	24.4 C (75.9 F)	14 of 100 (Routine)
Summerville 4W	United States	Record daily precipitation	36.1 mm (1.4 in)	14 of 100 (Routine)
Salem AP (McNary Field)	United States	Record high maximum temperature	30.6 C (87.1 F)	14 of 100 (Routine)
Booneville	United States	Record daily precipitation	34.5 mm (1.4 in)	13 of 100 (Routine)
Bosque del Apache	United States	Record high maximum temperature	36.1 C (97.0 F)	13 of 100 (Routine)
Hood Rvr Exp STN	United States	Record high maximum temperature	30.6 C (87.1 F)	13 of 100 (Routine)
Crosbyton	United States	Record high maximum temperature	37.8 C (100.0 F)	13 of 100 (Routine)
Hiasen I Sigdal	Norway	Record daily precipitation	33.0 mm (1.3 in)	12 of 100 (Routine)
Tuddal	Norway	Record daily precipitation	28.5 mm (1.1 in)	12 of 100 (Routine)
Hedal I Valdres	Norway	Record daily precipitation	20.8 mm (0.8 in)	12 of 100 (Routine)
Gavle	Sweden	Record low minimum temperature	-2.6 C (27.3 F)	12 of 100 (Routine)
Clanton	United States	Record daily precipitation	20.3 mm (0.8 in)	12 of 100 (Routine)
Bjornholt	Norway	Record daily precipitation	34.0 mm (1.3 in)	11 of 100 (Routine)
Coorparoo Bowls Club	Australia	Record daily precipitation	1.8 mm (0.07 in)	10 of 100 (Routine)
Tunhovd	Norway	Record daily precipitation	15.3 mm (0.6 in)	10 of 100 (Routine)
Tarnaby	Sweden	Record low minimum temperature	-5.5 C (22.1 F)	10 of 100 (Routine)
Tombstone	United States	Record high maximum temperature	35.6 C (96.1 F)	10 of 100 (Routine)
Elsinore	United States	Record low minimum temperature	5.0 C (41.0 F)	10 of 100 (Routine)
San Jose	United States	Record high minimum temperature	15.0 C (59.0 F)	10 of 100 (Routine)
Alamogordo 1	United States	Record high maximum temperature	33.9 C (93.0 F)	10 of 100 (Routine)
Salisbury	United States	Record high minimum temperature	16.1 C (61.0 F)	10 of 100 (Routine)
El Paso	United States	Record high maximum temperature	35.6 C (96.1 F)	10 of 100 (Routine)
Svyatoy Nos;Cape(Closed)	Russia	Record low minimum temperature	0.2 C (32.4 F)	9 of 100 (Routine)
Bisbee	United States	Record high maximum temperature	36.1 C (97.0 F)	9 of 100 (Routine)
Bridgeport 5 NW	United States	Record daily precipitation	13.2 mm (0.5 in)	8 of 100 (Routine)
Little Falls City Rsch	United States	Record high maximum temperature	27.8 C (82.0 F)	8 of 100 (Routine)
Cascade Locks	United States	Record high maximum temperature	30.6 C (87.1 F)	8 of 100 (Routine)
Mc Minnville	United States	Record high maximum temperature	33.3 C (91.9 F)	8 of 100 (Routine)

Counts by Type and Timescale

102 records

Records set or tied on 20 September 1930 by type: Highest daily maximum 31, Lowest daily maximum 6, Highest daily minimum 12, Lowest daily minimum 12, Heaviest daily rainfall 41.

Records on 20 September 1930 by type
Record type	Records
Highest daily maximum	31
Lowest daily maximum	6
Highest daily minimum	12
Lowest daily minimum	12
Heaviest daily rainfall	41
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 September 1930 by timescale: all-time 0, monthly 1, daily 101.

How Much Records Were Beaten By

71 broken records

Margins by which the 71 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 61.0. Ties are not counted.

Top 20 by Significance

20 September 1930

Top 20 records on 20 September 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1930	Hedrum, NO	daily rain	75.5 mm (3.0 in)	52.0 mm (2.0 in)	5 years	44 of 100 (Notable)
20 September 1930	Gjerstad I Aust-Agder, NO	monthly rain	123.8 mm (4.9 in)	31.8 mm (1.3 in)	12 years	40 of 100 (Notable)
20 September 1930	Kislovodsk, RU	daily rain	33.4 mm (1.3 in)	19.0 mm (0.7 in)	28 years	40 of 100 (Notable)
20 September 1930	Hattiesburg 5SW, US	daily rain	79.8 mm (3.1 in)	61.0 mm (2.4 in)	24 years	37 of 100 (Notable)
20 September 1930	Aseral, NO	daily rain	70.0 mm (2.8 in)	30.8 mm (1.2 in)	19 years	33 of 100 (Routine)
20 September 1930	Mykland, NO	daily rain	55.0 mm (2.2 in)	26.2 mm (1.0 in)	19 years	31 of 100 (Routine)
20 September 1930	Perth Regional Office, AU	daily high min	17.7 C (63.9 F)	3.9 C (7.0 F)	30 years	27 of 100 (Routine)
20 September 1930	Herefoss, NO	daily rain	62.7 mm (2.5 in)	26.5 mm (1.0 in)	19 years	27 of 100 (Routine)
20 September 1930	Hawkinsville, US	daily rain	40.6 mm (1.6 in)	34.8 mm (1.4 in)	13 years	26 of 100 (Routine)
20 September 1930	St Helena Island, AU	daily rain	26.7 mm (1.1 in)	8.9 mm (0.35 in)	40 years	24 of 100 (Routine)
20 September 1930	West Terschelling, NL	daily rain	28.4 mm (1.1 in)	8.6 mm (0.34 in)	19 years	24 of 100 (Routine)
20 September 1930	Griffin, US	daily rain	35.6 mm (1.4 in)	18.6 mm (0.7 in)	24 years	21 of 100 (Routine)
20 September 1930	La Ctr, US	daily high min	16.7 C (62.1 F)	2.8 C (5.0 F)	31 years	21 of 100 (Routine)
20 September 1930	Verhojansk, RU	daily rain	24.0 mm (0.9 in)	21.5 mm (0.8 in)	23 years	20 of 100 (Routine)
20 September 1930	Nerchinskij Zavod, RU	daily rain	16.5 mm (0.6 in)	10.1 mm (0.4 in)	33 years	20 of 100 (Routine)
20 September 1930	Pembroke Eddy Match, CA	daily rain	14.0 mm (0.6 in)	2.3 mm (0.09 in)	60 years	20 of 100 (Routine)
20 September 1930	Nurnberg, DE	daily rain	11.2 mm (0.4 in)	1.9 mm (0.07 in)	46 years	20 of 100 (Routine)
20 September 1930	Bay Saint Louis, US	daily low max	26.1 C (79.0 F)	1.7 C (3.1 F)	30 years	19 of 100 (Routine)
20 September 1930	Mestad I Oddernes, NO	daily rain	50.3 mm (2.0 in)	12.3 mm (0.5 in)	19 years	18 of 100 (Routine)
20 September 1930	Kalmar_D, SE	daily rain	21.1 mm (0.8 in)	5.0 mm (0.20 in)	8 years	18 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

1812 to 1930

Records set or tied on this calendar date in each year from 1812 to 1930. 1930 had 102 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 1930-09-20: 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	54
10 to 20	9
20 to 30	3
30 to 40	3
40 to 50	0
50 to 60	1
60 to 70	1