Weather Records on 30 September 1939

371 weather records were set or tied worldwide on 30 September 1939. Highest significance: Guy Fawkes 2, AU.

Key Facts for 30 September 1939

On 30 September 1939, 371 weather records were set or tied at long-record stations worldwide.
111 were record highs and 168 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 38 monthly and 333 daily.
Guy Fawkes 2 set a daily record precipitation of 78.7 mm (3.1 in) on 30 September 1939.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 440 records.

Record Map

371 stations

371 station records on 30 September 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Guy Fawkes 2	Australia	Record daily precipitation	78.7 mm (3.1 in)	48 of 100 (Notable)
Lock Haven	United States	Record daily precipitation	75.2 mm (3.0 in)	40 of 100 (Notable)
Clarksdale	United States	Record daily precipitation	67.8 mm (2.7 in)	36 of 100 (Notable)
Weissenburg	Germany	Record low minimum temperature	-3.6 C (25.5 F)	33 of 100 (Routine)
Helena	United States	Record daily precipitation	58.7 mm (2.3 in)	33 of 100 (Routine)
Mirannie	Australia	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Ebor (Kotupna)	Australia	Record daily precipitation	50.5 mm (2.0 in)	29 of 100 (Routine)
Salzburg	Austria	Record low minimum temperature	-1.6 C (29.1 F)	29 of 100 (Routine)
Pine Bluff	United States	Record daily precipitation	66.0 mm (2.6 in)	29 of 100 (Routine)
Grand Meadow	United States	Record low minimum temperature	-5.6 C (21.9 F)	29 of 100 (Routine)
Gloucester Post Office	Australia	Record daily precipitation	32.8 mm (1.3 in)	28 of 100 (Routine)
Greenwood	Australia	Record daily precipitation	32.0 mm (1.3 in)	28 of 100 (Routine)
Kremsmuenster	Austria	Record low minimum temperature	0.5 C (32.9 F)	28 of 100 (Routine)
Barabinsk	Russia	Record low minimum temperature	-7.9 C (17.8 F)	28 of 100 (Routine)
West Bend	United States	Record low minimum temperature	-5.6 C (21.9 F)	28 of 100 (Routine)
Springfield Elmwood Av	United States	Record daily precipitation	35.6 mm (1.4 in)	28 of 100 (Routine)
Marion	United States	Record daily precipitation	41.9 mm (1.6 in)	27 of 100 (Routine)
La Delle 7 NE	United States	Record low minimum temperature	-10.0 C (14.0 F)	27 of 100 (Routine)
Albert Lea 3SE	United States	Record low minimum temperature	-5.0 C (23.0 F)	26 of 100 (Routine)
Vardoe	Norway	Record low minimum temperature	-4.8 C (23.4 F)	25 of 100 (Routine)
Batesville	United States	Record daily precipitation	63.0 mm (2.5 in)	25 of 100 (Routine)
World Trade Ctr	United States	Record high minimum temperature	18.9 C (66.0 F)	25 of 100 (Routine)
Jeogla Station	Australia	Record daily precipitation	40.1 mm (1.6 in)	24 of 100 (Routine)
Regensburg	Germany	Record low minimum temperature	-1.1 C (30.0 F)	24 of 100 (Routine)
St Peter	United States	Record low minimum temperature	-6.1 C (21.0 F)	24 of 100 (Routine)
Cockle Creek (Pasminco Metals)	Australia	Record daily precipitation	45.7 mm (1.8 in)	23 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record low minimum temperature	-0.8 C (30.6 F)	23 of 100 (Routine)
Gresford Post Office	Australia	Record daily precipitation	56.1 mm (2.2 in)	22 of 100 (Routine)
Kolar	India	Record daily precipitation	89.4 mm (3.5 in)	22 of 100 (Routine)
Teriberka	Russia	Record low minimum temperature	-7.5 C (18.5 F)	22 of 100 (Routine)
Oracle	United States	Record low minimum temperature	7.2 C (45.0 F)	22 of 100 (Routine)
Ft Dodge 5NNW	United States	Record low minimum temperature	-3.9 C (25.0 F)	22 of 100 (Routine)
Mora	United States	Record low minimum temperature	-6.1 C (21.0 F)	22 of 100 (Routine)
Ashland	United States	Record daily precipitation	29.2 mm (1.1 in)	22 of 100 (Routine)
Covington 3 SW	United States	Record daily precipitation	48.3 mm (1.9 in)	22 of 100 (Routine)
Rocky Mt	United States	Record high maximum temperature	33.9 C (93.0 F)	22 of 100 (Routine)
Maunawili Rch	United States	Record low minimum temperature	17.8 C (64.0 F)	22 of 100 (Routine)
Dungog Post Office	Australia	Record daily precipitation	54.1 mm (2.1 in)	21 of 100 (Routine)
Karlsruhe	Germany	Record low minimum temperature	-0.1 C (31.8 F)	21 of 100 (Routine)
Svyatoy Nos;Cape(Closed)	Russia	Record low minimum temperature	-5.0 C (23.0 F)	21 of 100 (Routine)
Pocahontas	United States	Record low minimum temperature	-5.0 C (23.0 F)	21 of 100 (Routine)
Centre Hall	United States	Record daily precipitation	77.5 mm (3.1 in)	21 of 100 (Routine)
De Smet	United States	Record low minimum temperature	-6.7 C (19.9 F)	21 of 100 (Routine)
Kaanapali AP 453.1	United States	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Achinsk	Russia	Record daily precipitation	12.9 mm (0.5 in)	20 of 100 (Routine)
Yreka	United States	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Rouchel Brook	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Gudauri	Georgia	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Yerevan	Armenia	Record high minimum temperature	16.5 C (61.7 F)	20 of 100 (Routine)
Millers Creek	Australia	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Clarence Town (Grey St)	Australia	Record daily precipitation	49.5 mm (1.9 in)	20 of 100 (Routine)
Aachen	Germany	Record low minimum temperature	1.7 C (35.1 F)	20 of 100 (Routine)
Kargopol	Russia	Record low minimum temperature	-5.6 C (21.9 F)	20 of 100 (Routine)
Brookings 2 NE	United States	Record low minimum temperature	-7.2 C (19.0 F)	20 of 100 (Routine)
Aberdeen	United States	Record low minimum temperature	-9.4 C (15.1 F)	20 of 100 (Routine)
Park Rapids Muni AP	United States	Record low minimum temperature	-7.2 C (19.0 F)	20 of 100 (Routine)
Georgetown Post Office	Australia	Record low minimum temperature	5.6 C (42.1 F)	19 of 100 (Routine)
Emmaville Post Office	Australia	Record daily precipitation	15.2 mm (0.6 in)	19 of 100 (Routine)
Koolool	Australia	Record daily precipitation	24.9 mm (1.0 in)	19 of 100 (Routine)
Fort Chipewyan	Canada	Record low maximum temperature	1.7 C (35.1 F)	19 of 100 (Routine)

Counts by Type and Timescale

371 records

Records set or tied on 30 September 1939 by type: Highest daily maximum 45, Lowest daily maximum 31, Highest daily minimum 66, Lowest daily minimum 137, Heaviest daily rainfall 89, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 30 September 1939 by type
Record type	Records
Highest daily maximum	45
Lowest daily maximum	31
Highest daily minimum	66
Lowest daily minimum	137
Heaviest daily rainfall	89
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 30 September 1939 by timescale: all-time 0, monthly 38, daily 333.

How Much Records Were Beaten By

255 broken records

Margins by which the 255 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 56.6. Ties are not counted.

Top 20 by Significance

30 September 1939

Top 20 records on 30 September 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1939	Guy Fawkes 2, AU	daily rain	78.7 mm (3.1 in)	56.6 mm (2.2 in)	32 years	48 of 100 (Notable)
30 September 1939	Lock Haven, US	daily rain	75.2 mm (3.0 in)	35.1 mm (1.4 in)	18 years	40 of 100 (Notable)
30 September 1939	Clarksdale, US	daily rain	67.8 mm (2.7 in)	42.7 mm (1.7 in)	4 years	36 of 100 (Notable)
30 September 1939	Weissenburg, DE	monthly low min	-3.6 C (25.5 F)	0.3 C (0.5 F)	58 years	33 of 100 (Routine)
30 September 1939	Helena, US	daily rain	58.7 mm (2.3 in)	47.3 mm (1.9 in)	4 years	33 of 100 (Routine)
30 September 1939	Mirannie, AU	daily rain	35.6 mm (1.4 in)	25.9 mm (1.0 in)	30 years	30 of 100 (Routine)
30 September 1939	Ebor (Kotupna), AU	daily rain	50.5 mm (2.0 in)	13.2 mm (0.5 in)	39 years	29 of 100 (Routine)
30 September 1939	Salzburg, AT	daily low min	-1.6 C (29.1 F)	2.8 C (5.0 F)	51 years	29 of 100 (Routine)
30 September 1939	Pine Bluff, US	daily rain	66.0 mm (2.6 in)	35.0 mm (1.4 in)	17 years	29 of 100 (Routine)
30 September 1939	Grand Meadow, US	monthly low min	-5.6 C (21.9 F)	1.2 C (2.2 F)	46 years	29 of 100 (Routine)
30 September 1939	Gloucester Post Office, AU	daily rain	32.8 mm (1.3 in)	20.9 mm (0.8 in)	32 years	28 of 100 (Routine)
30 September 1939	Greenwood, AU	daily rain	32.0 mm (1.3 in)	21.1 mm (0.8 in)	30 years	28 of 100 (Routine)
30 September 1939	Kremsmuenster, AT	daily low min	0.5 C (32.9 F)	1.5 C (2.7 F)	61 years	28 of 100 (Routine)
30 September 1939	Barabinsk, RU	monthly low min	-7.9 C (17.8 F)	1.3 C (2.3 F)	38 years	28 of 100 (Routine)
30 September 1939	West Bend, US	monthly low min	-5.6 C (21.9 F)	1.2 C (2.2 F)	42 years	28 of 100 (Routine)
30 September 1939	Springfield Elmwood Av, US	daily rain	35.6 mm (1.4 in)	14.3 mm (0.6 in)	36 years	28 of 100 (Routine)
30 September 1939	Marion, US	daily rain	41.9 mm (1.6 in)	19.0 mm (0.7 in)	25 years	27 of 100 (Routine)
30 September 1939	La Delle 7 NE, US	daily low min	-10.0 C (14.0 F)	7.2 C (13.0 F)	40 years	27 of 100 (Routine)
30 September 1939	Albert Lea 3SE, US	monthly low min	-5.0 C (23.0 F)	0.6 C (1.1 F)	39 years	26 of 100 (Routine)
30 September 1939	Vardoe, NO	monthly low min	-4.8 C (23.4 F)	0.2 C (0.4 F)	37 years	25 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

1806 to 1939

Records set or tied on this calendar date in each year from 1806 to 1939. 1939 had 371 records.

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

Records on 09-30 in each year
Year	Records
1806	1
1813	1
1817	1
1819	2
1834	1
1841	1
1842	1
1847	1
1853	1
1854	1
1855	1
1861	1
1862	1
1866	1
1868	2
1869	3
1870	1
1874	1
1877	1
1878	1
1881	5
1883	2
1885	1
1886	3
1887	1
1888	4
1889	1
1892	2
1893	3
1894	8
1895	5
1896	2
1897	3
1898	3
1899	12
1900	4
1901	11
1902	7
1903	9
1904	14
1905	25
1906	14
1907	16
1908	18
1909	10
1910	5
1911	47
1912	47
1913	10
1914	33
1915	84
1916	209
1917	19
1918	45
1919	28
1920	71
1921	61
1922	71
1923	183
1924	243
1925	211
1926	194
1927	486
1928	560
1929	181
1930	110
1931	225
1932	363
1933	437
1934	398
1935	209
1936	432
1937	417
1938	428
1939	371
1940	316
1941	482
1942	405
1943	404
1944	369
1945	889
1946	320
1947	433
1948	267
1949	366
1950	731
1951	597
1952	504
1953	1,136
1954	1,059
1955	406
1956	350
1957	663
1958	442
1959	1,159
1960	161
1961	618
1962	202
1963	818
1964	332
1965	459
1966	592
1967	859
1968	449
1969	465
1970	334
1971	1,359
1972	676
1973	407
1974	742
1975	686
1976	775
1977	870
1978	399
1979	479
1980	832
1981	688
1982	806
1983	1,102
1984	1,267
1985	1,892
1986	1,805
1987	649
1988	453
1989	713
1990	665
1991	949
1992	980
1993	988
1994	816
1995	1,061
1996	1,396
1997	729
1998	1,206
1999	1,144
2000	887
2001	699
2002	677
2003	1,079
2004	573
2005	761
2006	617
2007	841
2008	585
2009	826
2010	1,059
2011	1,258
2012	637
2013	634
2014	529
2015	997
2016	746
2017	404
2018	717
2019	2,192
2020	554
2021	823
2022	563
2023	1,012
2024	948
2025	559
2026	523

Download the Data

Data for records on 1939-09-30: 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	221
10 to 20	14
20 to 30	13
30 to 40	4
40 to 50	2
50 to 60	1