Weather Records on 9 August 1939

480 weather records were set or tied worldwide on 9 August 1939. Highest significance: Two Harbors, US.

Key Facts for 9 August 1939

On 9 August 1939, 480 weather records were set or tied at long-record stations worldwide.
95 were record highs and 214 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 10 monthly and 467 daily.
Two Harbors set an all-time record daily precipitation of 133.4 mm (5.3 in) on 9 August 1939.
Across 156 earlier years (1798 to 2026) the same calendar date averaged 474 records.

Record Map

480 stations

480 station records on 9 August 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 August 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Two Harbors	United States	Record daily precipitation	133.4 mm (5.3 in)	57 of 100 (Notable)
Altentreptow	Germany	Record daily precipitation	43.2 mm (1.7 in)	52 of 100 (Notable)
Dodballapur	India	Record daily precipitation	77.5 mm (3.1 in)	50 of 100 (Notable)
Devanhalli	India	Record daily precipitation	92.5 mm (3.6 in)	50 of 100 (Notable)
Parlakimedi	India	Record daily precipitation	95.3 mm (3.8 in)	49 of 100 (Notable)
Punganur	India	Record daily precipitation	77.5 mm (3.1 in)	46 of 100 (Notable)
Kanakapura	India	Record daily precipitation	99.1 mm (3.9 in)	45 of 100 (Notable)
Haskote	India	Record daily precipitation	61.0 mm (2.4 in)	43 of 100 (Notable)
Woori Yallock	Australia	Record daily precipitation	38.6 mm (1.5 in)	40 of 100 (Notable)
Pattikonda	India	Record daily precipitation	51.8 mm (2.0 in)	39 of 100 (Notable)
Conway	United States	Record daily precipitation	70.1 mm (2.8 in)	39 of 100 (Notable)
Hondo	United States	Record daily precipitation	66.0 mm (2.6 in)	39 of 100 (Notable)
Uvalde	United States	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
San Angelo	United States	Record low maximum temperature	23.3 C (73.9 F)	38 of 100 (Notable)
Ramanathapuram	India	Record daily precipitation	49.3 mm (1.9 in)	34 of 100 (Routine)
Kalyanganj	India	Record daily precipitation	66.5 mm (2.6 in)	33 of 100 (Routine)
Bloomfield 3 SE	United States	Record low minimum temperature	2.2 C (36.0 F)	31 of 100 (Routine)
Dome Lake	United States	Record low maximum temperature	5.6 C (42.1 F)	31 of 100 (Routine)
Superior	United States	Record daily precipitation	108.7 mm (4.3 in)	30 of 100 (Routine)
Kolar	India	Record daily precipitation	39.1 mm (1.5 in)	29 of 100 (Routine)
Las Vegas 2 NW	United States	Record high minimum temperature	18.3 C (64.9 F)	29 of 100 (Routine)
Tuba City	United States	Record high minimum temperature	27.2 C (81.0 F)	28 of 100 (Routine)
Saguache	United States	Record low minimum temperature	-0.6 C (30.9 F)	27 of 100 (Routine)
Miles City	United States	Record low maximum temperature	15.0 C (59.0 F)	27 of 100 (Routine)
Spearfish	United States	Record low maximum temperature	13.3 C (55.9 F)	27 of 100 (Routine)
Thermopolis	United States	Record low maximum temperature	17.8 C (64.0 F)	27 of 100 (Routine)
Qu'appelle	Canada	Record low minimum temperature	1.7 C (35.1 F)	26 of 100 (Routine)
Zerbst	Germany	Record daily precipitation	34.8 mm (1.4 in)	26 of 100 (Routine)
Virginia City	United States	Record low minimum temperature	0.6 C (33.1 F)	26 of 100 (Routine)
Morgan	United States	Record low minimum temperature	-0.6 C (30.9 F)	26 of 100 (Routine)
Olympia Priest Pt Park	United States	Record high maximum temperature	36.7 C (98.1 F)	26 of 100 (Routine)
Gumma	India	Record daily precipitation	78.7 mm (3.1 in)	25 of 100 (Routine)
Periyanaickampal	India	Record daily precipitation	36.1 mm (1.4 in)	24 of 100 (Routine)
Mt Ida 3 SE	United States	Record daily precipitation	109.7 mm (4.3 in)	24 of 100 (Routine)
Glasgow #2	United States	Record daily precipitation	26.9 mm (1.1 in)	24 of 100 (Routine)
Basin	United States	Record low maximum temperature	17.8 C (64.0 F)	24 of 100 (Routine)
Vedasandur	India	Record daily precipitation	26.9 mm (1.1 in)	23 of 100 (Routine)
Sibley	United States	Record low minimum temperature	4.4 C (39.9 F)	23 of 100 (Routine)
Park Rapids Muni AP	United States	Record low maximum temperature	13.3 C (55.9 F)	23 of 100 (Routine)
Barkerville	Canada	Record high maximum temperature	31.1 C (88.0 F)	22 of 100 (Routine)
Busby	United States	Record low maximum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Dillon U of Montana Western	United States	Record low maximum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Vale	United States	Record low maximum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Tullahoma	United States	Record daily precipitation	55.9 mm (2.2 in)	22 of 100 (Routine)
Steveston	Canada	Record high maximum temperature	27.8 C (82.0 F)	21 of 100 (Routine)
Alangudi	India	Record daily precipitation	43.2 mm (1.7 in)	21 of 100 (Routine)
Detroit Lakes 1 NNE	United States	Record low maximum temperature	15.6 C (60.1 F)	21 of 100 (Routine)
Doniphan	United States	Record low maximum temperature	24.4 C (75.9 F)	21 of 100 (Routine)
Astoria	United States	Record high maximum temperature	29.4 C (84.9 F)	21 of 100 (Routine)
La Sal	United States	Record low minimum temperature	6.1 C (43.0 F)	21 of 100 (Routine)
Berlin-Dahlem (Lfag)	Germany	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Sankarankoil	India	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Brinkworth (Anama Park)	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Kinchega	Australia	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Fowlers Bay	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Hoburg	Sweden	Record daily precipitation	14.6 mm (0.6 in)	20 of 100 (Routine)
White Cliffs (Wonnaminta)	Australia	Record daily precipitation	3.3 mm (0.13 in)	20 of 100 (Routine)
White Cliffs (Tarella)	Australia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Clyde State School	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Palayankottai	India	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)

Counts by Type and Timescale

480 records

Records set or tied on 9 August 1939 by type: Highest daily maximum 45, Lowest daily maximum 74, Highest daily minimum 50, Lowest daily minimum 140, Heaviest daily rainfall 171.

Records on 9 August 1939 by type
Record type	Records
Highest daily maximum	45
Lowest daily maximum	74
Highest daily minimum	50
Lowest daily minimum	140
Heaviest daily rainfall	171
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 9 August 1939 by timescale: all-time 3, monthly 10, daily 467.

How Much Records Were Beaten By

364 broken records

Margins by which the 364 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.5. Ties are not counted.

Top 20 by Significance

9 August 1939

Top 20 records on 9 August 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 August 1939	Two Harbors, US	all-time rain	133.4 mm (5.3 in)	26.7 mm (1.1 in)	30 years	57 of 100 (Notable)
9 August 1939	Altentreptow, DE	daily rain	43.2 mm (1.7 in)	26.9 mm (1.1 in)	47 years	52 of 100 (Notable)
9 August 1939	Dodballapur, IN	daily rain	77.5 mm (3.1 in)	67.8 mm (2.7 in)	25 years	50 of 100 (Notable)
9 August 1939	Devanhalli, IN	daily rain	92.5 mm (3.6 in)	78.5 mm (3.1 in)	25 years	50 of 100 (Notable)
9 August 1939	Parlakimedi, IN	daily rain	95.3 mm (3.8 in)	69.1 mm (2.7 in)	21 years	49 of 100 (Notable)
9 August 1939	Punganur, IN	daily rain	77.5 mm (3.1 in)	58.7 mm (2.3 in)	24 years	46 of 100 (Notable)
9 August 1939	Kanakapura, IN	daily rain	99.1 mm (3.9 in)	50.3 mm (2.0 in)	29 years	45 of 100 (Notable)
9 August 1939	Haskote, IN	daily rain	61.0 mm (2.4 in)	52.1 mm (2.1 in)	16 years	43 of 100 (Notable)
9 August 1939	Woori Yallock, AU	daily rain	38.6 mm (1.5 in)	26.4 mm (1.0 in)	0 years	40 of 100 (Notable)
9 August 1939	Pattikonda, IN	daily rain	51.8 mm (2.0 in)	38.6 mm (1.5 in)	22 years	39 of 100 (Notable)
9 August 1939	Conway, US	daily rain	70.1 mm (2.8 in)	38.6 mm (1.5 in)	26 years	39 of 100 (Notable)
9 August 1939	Hondo, US	daily rain	66.0 mm (2.6 in)	44.4 mm (1.7 in)	29 years	39 of 100 (Notable)
9 August 1939	Uvalde, US	daily rain	50.8 mm (2.0 in)	47.0 mm (1.9 in)	29 years	38 of 100 (Notable)
9 August 1939	San Angelo, US	daily low max	23.3 C (73.9 F)	8.9 C (16.0 F)	30 years	38 of 100 (Notable)
9 August 1939	Ramanathapuram, IN	daily rain	49.3 mm (1.9 in)	28.5 mm (1.1 in)	29 years	34 of 100 (Routine)
9 August 1939	Kalyanganj, IN	daily rain	66.5 mm (2.6 in)	43.9 mm (1.7 in)	29 years	33 of 100 (Routine)
9 August 1939	Bloomfield 3 SE, US	monthly low min	2.2 C (36.0 F)	3.4 C (6.1 F)	18 years	31 of 100 (Routine)
9 August 1939	Dome Lake, US	daily low max	5.6 C (42.1 F)	6.6 C (11.9 F)	41 years	31 of 100 (Routine)
9 August 1939	Superior, US	all-time rain	108.7 mm (4.3 in)	3.8 mm (0.15 in)	14 years	30 of 100 (Routine)
9 August 1939	Kolar, IN	daily rain	39.1 mm (1.5 in)	30.0 mm (1.2 in)	21 years	29 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

1798 to 1939

Records set or tied on this calendar date in each year from 1798 to 1939. 1939 had 480 records.

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

Records on 08-09 in each year
Year	Records
1798	2
1800	1
1838	1
1845	3
1856	1
1859	3
1861	1
1863	2
1868	1
1870	1
1871	1
1873	1
1875	1
1878	1
1881	3
1884	2
1886	1
1887	1
1888	1
1889	1
1890	1
1891	4
1892	4
1893	3
1894	3
1895	1
1896	3
1897	7
1898	12
1899	4
1900	8
1901	3
1902	3
1903	6
1904	9
1905	5
1906	15
1907	9
1908	9
1909	51
1910	16
1911	44
1912	47
1913	76
1914	21
1915	61
1916	37
1917	46
1918	210
1919	49
1920	289
1921	36
1922	70
1923	73
1924	143
1925	307
1926	142
1927	391
1928	220
1929	127
1930	570
1931	399
1932	194
1933	250
1934	654
1935	587
1936	519
1937	351
1938	379
1939	480
1940	455
1941	372
1942	527
1943	366
1944	647
1945	365
1946	307
1947	544
1948	440
1949	715
1950	407
1951	405
1952	317
1953	363
1954	377
1955	433
1956	278
1957	347
1958	417
1959	453
1960	459
1961	347
1962	636
1963	500
1964	755
1965	632
1966	568
1967	457
1968	1,037
1969	527
1970	751
1971	543
1972	1,089
1973	547
1974	660
1975	790
1976	883
1977	453
1978	784
1979	630
1980	945
1981	941
1982	935
1983	839
1984	683
1985	714
1986	509
1987	927
1988	625
1989	2,082
1990	799
1991	988
1992	1,699
1993	702
1994	1,097
1995	1,417
1996	864
1997	1,446
1998	969
1999	1,370
2000	1,237
2001	1,485
2002	1,167
2003	1,344
2004	941
2005	1,001
2006	828
2007	1,687
2008	667
2009	1,028
2010	1,393
2011	1,177
2012	843
2013	761
2014	531
2015	595
2016	634
2017	773
2018	972
2019	717
2020	643
2021	523
2022	793
2023	820
2024	952
2025	799
2026	1,019

Download the Data

Data for records on 1939-08-09: 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	322
10 to 20	21
20 to 30	8
30 to 40	3
40 to 50	4
50 to 60	3
60 to 70	2
70 to 80	1