Weather Records on 25 September 1939

454 weather records were set or tied worldwide on 25 September 1939. Highest significance: Pasadena, US.

Key Facts for 25 September 1939

On 25 September 1939, 454 weather records were set or tied at long-record stations worldwide.
204 were record highs and 56 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 25 monthly and 429 daily.
Pasadena set a monthly record daily precipitation of 124.5 mm (4.9 in) on 25 September 1939.
Across 163 earlier years (1825 to 2026) the same calendar date averaged 426 records.

Record Map

454 stations

454 station records on 25 September 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 September 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pasadena	United States	Record daily precipitation	124.5 mm (4.9 in)	63 of 100 (Major)
Pomona/Fairplex	United States	Record daily precipitation	66.0 mm (2.6 in)	63 of 100 (Major)
Tustin Irvine Rch	United States	Record daily precipitation	78.0 mm (3.1 in)	62 of 100 (Major)
Santa Ana River Ph 1	United States	Record daily precipitation	94.2 mm (3.7 in)	58 of 100 (Notable)
Claremont Pomona Clg	United States	Record daily precipitation	81.3 mm (3.2 in)	54 of 100 (Notable)
Kingman	United States	Record daily precipitation	43.9 mm (1.7 in)	53 of 100 (Notable)
El Cajon 2 E	United States	Record daily precipitation	29.0 mm (1.1 in)	53 of 100 (Notable)
San Jacinto	United States	Record daily precipitation	29.2 mm (1.1 in)	51 of 100 (Notable)
Pachamba	India	Record daily precipitation	111.0 mm (4.4 in)	49 of 100 (Notable)
Parker	United States	Record daily precipitation	32.5 mm (1.3 in)	48 of 100 (Notable)
Aurangabad	India	Record daily precipitation	121.2 mm (4.8 in)	47 of 100 (Notable)
Needles	United States	Record daily precipitation	28.4 mm (1.1 in)	47 of 100 (Notable)
Mariposa	United States	Record daily precipitation	41.9 mm (1.6 in)	46 of 100 (Notable)
Kharagpur	India	Record daily precipitation	81.3 mm (3.2 in)	45 of 100 (Notable)
Azimganj	India	Record daily precipitation	95.8 mm (3.8 in)	41 of 100 (Notable)
Kentani (Bos)	South Africa	Record daily precipitation	54.4 mm (2.1 in)	41 of 100 (Notable)
Manatu	India	Record daily precipitation	123.7 mm (4.9 in)	40 of 100 (Notable)
San Bernardino F S 226	United States	Record daily precipitation	43.7 mm (1.7 in)	40 of 100 (Notable)
Butterworth (Tnk)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	38 of 100 (Notable)
Chattarpur	India	Record daily precipitation	123.7 mm (4.9 in)	37 of 100 (Notable)
Chatra	India	Record daily precipitation	104.1 mm (4.1 in)	36 of 100 (Notable)
Qacu (Bos)	South Africa	Record daily precipitation	29.0 mm (1.1 in)	36 of 100 (Notable)
Cuyamaca	United States	Record daily precipitation	43.4 mm (1.7 in)	36 of 100 (Notable)
Escondido	United States	Record daily precipitation	45.0 mm (1.8 in)	36 of 100 (Notable)
Balumath	India	Record daily precipitation	127.3 mm (5.0 in)	35 of 100 (Notable)
Fort Cochin	India	Record daily precipitation	75.7 mm (3.0 in)	34 of 100 (Routine)
Elliotdale (Tnk)	South Africa	Record daily precipitation	39.1 mm (1.5 in)	34 of 100 (Routine)
Kologha (Bos)	South Africa	Record daily precipitation	32.0 mm (1.3 in)	33 of 100 (Routine)
Izeleni (Bos)	South Africa	Record daily precipitation	48.8 mm (1.9 in)	33 of 100 (Routine)
Dohne (Sar)	South Africa	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Los Alamos	United States	Record daily precipitation	47.0 mm (1.9 in)	33 of 100 (Routine)
Fort Cunynghame (Bos)	South Africa	Record daily precipitation	30.2 mm (1.2 in)	31 of 100 (Routine)
Keilands	South Africa	Record daily precipitation	46.5 mm (1.8 in)	31 of 100 (Routine)
Mill Creek 2	United States	Record daily precipitation	68.1 mm (2.7 in)	31 of 100 (Routine)
Monticello	United States	Record daily precipitation	83.8 mm (3.3 in)	31 of 100 (Routine)
Barh	India	Record daily precipitation	72.9 mm (2.9 in)	30 of 100 (Routine)
Umzimkulu (Tnk)	South Africa	Record daily precipitation	36.8 mm (1.4 in)	30 of 100 (Routine)
Chatham	Canada	Record low minimum temperature	-3.9 C (25.0 F)	29 of 100 (Routine)
Nqamakwe (Tnk)	South Africa	Record daily precipitation	27.4 mm (1.1 in)	29 of 100 (Routine)
Paso Robles	United States	Record high minimum temperature	20.6 C (69.1 F)	29 of 100 (Routine)
Bikram	India	Record daily precipitation	88.9 mm (3.5 in)	28 of 100 (Routine)
Syktyvkar	Russia	Record low minimum temperature	-8.6 C (16.5 F)	28 of 100 (Routine)
Grahamstown	South Africa	Record daily precipitation	42.9 mm (1.7 in)	28 of 100 (Routine)
Mqanduli (Tnk)	South Africa	Record daily precipitation	39.9 mm (1.6 in)	28 of 100 (Routine)
Kalyanganj	India	Record daily precipitation	88.9 mm (3.5 in)	27 of 100 (Routine)
Isidinge (Bos)	South Africa	Record daily precipitation	42.9 mm (1.7 in)	27 of 100 (Routine)
Mount Coke (Bos)	South Africa	Record daily precipitation	31.5 mm (1.2 in)	27 of 100 (Routine)
Sherghati	India	Record daily precipitation	91.9 mm (3.6 in)	26 of 100 (Routine)
Cullendale	South Africa	Record daily precipitation	25.9 mm (1.0 in)	26 of 100 (Routine)
Kubusie (Bos)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Kokstad	South Africa	Record daily precipitation	32.8 mm (1.3 in)	26 of 100 (Routine)
Rosera	India	Record daily precipitation	65.0 mm (2.6 in)	25 of 100 (Routine)
Patna Obsy	India	Record daily precipitation	77.5 mm (3.1 in)	25 of 100 (Routine)
Engcobo (Tnk)	South Africa	Record daily precipitation	38.1 mm (1.5 in)	25 of 100 (Routine)
Durban-Botanical Gardens	South Africa	Record daily precipitation	43.7 mm (1.7 in)	25 of 100 (Routine)
Plant City	United States	Record high minimum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Winnemucca AP	United States	Record high minimum temperature	12.8 C (55.0 F)	25 of 100 (Routine)
Port Said	Egypt	Record high maximum temperature	37.0 C (98.6 F)	24 of 100 (Routine)
Dhakuakhana	India	Record daily precipitation	103.6 mm (4.1 in)	24 of 100 (Routine)
Hajipur	India	Record daily precipitation	59.4 mm (2.3 in)	24 of 100 (Routine)

Counts by Type and Timescale

454 records

Records set or tied on 25 September 1939 by type: Highest daily maximum 119, Lowest daily maximum 14, Highest daily minimum 85, Lowest daily minimum 42, Heaviest daily rainfall 188, Heaviest daily snowfall 4, Deepest snow cover 2.

Records on 25 September 1939 by type
Record type	Records
Highest daily maximum	119
Lowest daily maximum	14
Highest daily minimum	85
Lowest daily minimum	42
Heaviest daily rainfall	188
Heaviest daily snowfall	4
Deepest snow cover	2

Records on 25 September 1939 by timescale: all-time 0, monthly 25, daily 429.

How Much Records Were Beaten By

382 broken records

Margins by which the 382 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 92.0. Ties are not counted.

Top 20 by Significance

25 September 1939

Top 20 records on 25 September 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 September 1939	Pasadena, US	monthly rain	124.5 mm (4.9 in)	78.5 mm (3.1 in)	31 years	63 of 100 (Major)
25 September 1939	Pomona/Fairplex, US	monthly rain	66.0 mm (2.6 in)	34.2 mm (1.3 in)	31 years	63 of 100 (Major)
25 September 1939	Tustin Irvine Rch, US	monthly rain	78.0 mm (3.1 in)	52.6 mm (2.1 in)	31 years	62 of 100 (Major)
25 September 1939	Santa Ana River Ph 1, US	monthly rain	94.2 mm (3.7 in)	45.2 mm (1.8 in)	31 years	58 of 100 (Notable)
25 September 1939	Claremont Pomona Clg, US	monthly rain	81.3 mm (3.2 in)	48.5 mm (1.9 in)	0 years	54 of 100 (Notable)
25 September 1939	Kingman, US	daily rain	43.9 mm (1.7 in)	40.1 mm (1.6 in)	36 years	53 of 100 (Notable)
25 September 1939	El Cajon 2 E, US	daily rain	29.0 mm (1.1 in)	26.0 mm (1.0 in)	30 years	53 of 100 (Notable)
25 September 1939	San Jacinto, US	daily rain	29.2 mm (1.1 in)	26.9 mm (1.1 in)	30 years	51 of 100 (Notable)
25 September 1939	Pachamba, IN	daily rain	111.0 mm (4.4 in)	72.9 mm (2.9 in)	36 years	49 of 100 (Notable)
25 September 1939	Parker, US	daily rain	32.5 mm (1.3 in)	27.4 mm (1.1 in)	41 years	48 of 100 (Notable)
25 September 1939	Aurangabad, IN	daily rain	121.2 mm (4.8 in)	92.0 mm (3.6 in)	32 years	47 of 100 (Notable)
25 September 1939	Needles, US	daily rain	28.4 mm (1.1 in)	25.4 mm (1.0 in)	36 years	47 of 100 (Notable)
25 September 1939	Mariposa, US	daily rain	41.9 mm (1.6 in)	37.8 mm (1.5 in)	8 years	46 of 100 (Notable)
25 September 1939	Kharagpur, IN	daily rain	81.3 mm (3.2 in)	57.9 mm (2.3 in)	36 years	45 of 100 (Notable)
25 September 1939	Azimganj, IN	daily rain	95.8 mm (3.8 in)	53.1 mm (2.1 in)	36 years	41 of 100 (Notable)
25 September 1939	Kentani (Bos), ZA	daily rain	54.4 mm (2.1 in)	40.2 mm (1.6 in)	39 years	41 of 100 (Notable)
25 September 1939	Manatu, IN	daily rain	123.7 mm (4.9 in)	88.9 mm (3.5 in)	13 years	40 of 100 (Notable)
25 September 1939	San Bernardino F S 226, US	monthly rain	43.7 mm (1.7 in)	14.7 mm (0.6 in)	27 years	40 of 100 (Notable)
25 September 1939	Butterworth (Tnk), ZA	daily rain	33.0 mm (1.3 in)	19.8 mm (0.8 in)	46 years	38 of 100 (Notable)
25 September 1939	Chattarpur, IN	daily rain	123.7 mm (4.9 in)	53.8 mm (2.1 in)	36 years	37 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

1825 to 1939

Records set or tied on this calendar date in each year from 1825 to 1939. 1939 had 454 records.

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

Records on 09-25 in each year
Year	Records
1825	1
1834	1
1836	1
1842	1
1843	1
1847	1
1851	1
1852	1
1855	1
1857	2
1859	1
1860	1
1863	1
1865	1
1866	2
1867	2
1868	1
1871	2
1872	1
1874	1
1875	1
1877	3
1879	2
1881	3
1884	3
1885	6
1886	1
1887	3
1889	7
1891	3
1893	7
1894	3
1895	5
1896	5
1897	2
1898	1
1899	2
1900	7
1901	6
1902	11
1903	4
1904	10
1905	16
1906	7
1907	35
1908	20
1909	22
1910	5
1911	9
1912	63
1913	13
1914	15
1915	43
1916	139
1917	138
1918	16
1919	20
1920	75
1921	32
1922	47
1923	68
1924	157
1925	141
1926	740
1927	166
1928	480
1929	158
1930	489
1931	500
1932	260
1933	542
1934	394
1935	258
1936	274
1937	190
1938	335
1939	454
1940	517
1941	269
1942	970
1943	488
1944	246
1945	514
1946	292
1947	666
1948	501
1949	479
1950	1,163
1951	639
1952	515
1953	242
1954	292
1955	546
1956	503
1957	231
1958	454
1959	396
1960	694
1961	530
1962	305
1963	602
1964	403
1965	690
1966	334
1967	428
1968	300
1969	196
1970	783
1971	323
1972	706
1973	650
1974	995
1975	1,166
1976	541
1977	875
1978	462
1979	719
1980	687
1981	669
1982	759
1983	647
1984	1,305
1985	446
1986	1,766
1987	560
1988	571
1989	1,367
1990	875
1991	1,243
1992	1,346
1993	1,015
1994	666
1995	1,013
1996	648
1997	1,278
1998	1,346
1999	804
2000	1,536
2001	1,536
2002	876
2003	758
2004	519
2005	1,484
2006	767
2007	1,284
2008	766
2009	854
2010	1,125
2011	763
2012	505
2013	615
2014	800
2015	868
2016	781
2017	1,253
2018	648
2019	530
2020	1,089
2021	355
2022	301
2023	580
2024	1,120
2025	569
2026	473

Download the Data

Data for records on 1939-09-25: 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).