Weather Records on 9 May 1939

345 weather records were set or tied worldwide on 9 May 1939. Highest significance: Port Hedland Post Office, AU.

Key Facts for 9 May 1939

On 9 May 1939, 345 weather records were set or tied at long-record stations worldwide.
155 were record highs and 25 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 340 daily.
Port Hedland Post Office set a monthly record daily precipitation of 162.1 mm (6.4 in) on 9 May 1939.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 433 records.

Record Map

345 stations

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

Weather records on 9 May 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Port Hedland Post Office	Australia	Record daily precipitation	162.1 mm (6.4 in)	59 of 100 (Notable)
Southern Cross	Australia	Record daily precipitation	52.1 mm (2.1 in)	52 of 100 (Notable)
Boodarie	Australia	Record daily precipitation	49.5 mm (1.9 in)	49 of 100 (Notable)
Planknek	South Africa	Record daily precipitation	46.2 mm (1.8 in)	47 of 100 (Notable)
Walk Walkin	Australia	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Thamaraikulam	India	Record daily precipitation	111.5 mm (4.4 in)	45 of 100 (Notable)
Strelley	Australia	Record daily precipitation	120.7 mm (4.8 in)	44 of 100 (Notable)
Jennaberring	Australia	Record daily precipitation	37.1 mm (1.5 in)	42 of 100 (Notable)
Kilauea 1134	United States	Record daily precipitation	46.2 mm (1.8 in)	42 of 100 (Notable)
Cowcowing	Australia	Record daily precipitation	34.0 mm (1.3 in)	41 of 100 (Notable)
Doongin Peak	Australia	Record daily precipitation	38.4 mm (1.5 in)	41 of 100 (Notable)
Kahuku 912	United States	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Dowerin	Australia	Record daily precipitation	38.6 mm (1.5 in)	39 of 100 (Notable)
Mangowine	Australia	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Albany 3 SE	United States	Record daily precipitation	59.9 mm (2.4 in)	36 of 100 (Notable)
Covington	United States	Record daily precipitation	35.6 mm (1.4 in)	33 of 100 (Routine)
Montreal McGill	Canada	Record daily precipitation	26.9 mm (1.1 in)	32 of 100 (Routine)
Nungarin	Australia	Record daily precipitation	26.2 mm (1.0 in)	31 of 100 (Routine)
Merredin	Australia	Record daily precipitation	25.7 mm (1.0 in)	29 of 100 (Routine)
Eraniel	India	Record daily precipitation	67.3 mm (2.6 in)	29 of 100 (Routine)
Camp Hill 2NW	United States	Record daily precipitation	42.7 mm (1.7 in)	29 of 100 (Routine)
Watertown	United States	Record daily precipitation	31.0 mm (1.2 in)	28 of 100 (Routine)
Rajakkamangalam	India	Record daily precipitation	133.4 mm (5.3 in)	27 of 100 (Routine)
Bunkin	Australia	Record daily precipitation	31.2 mm (1.2 in)	26 of 100 (Routine)
Hambantota	Sri Lanka	Record low maximum temperature	28.1 C (82.6 F)	26 of 100 (Routine)
Towanda 1 S	United States	Record high minimum temperature	17.8 C (64.0 F)	26 of 100 (Routine)
Arasadi	India	Record daily precipitation	29.7 mm (1.2 in)	25 of 100 (Routine)
Wallareenya	Australia	Record daily precipitation	26.2 mm (1.0 in)	24 of 100 (Routine)
Kellerberrin	Australia	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Walgormouring	Australia	Record daily precipitation	30.0 mm (1.2 in)	24 of 100 (Routine)
Wetaskiwin	Canada	Record high minimum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Szeged	Hungary	Record daily precipitation	30.3 mm (1.2 in)	24 of 100 (Routine)
Wongan Hills	Australia	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Ejanding	Australia	Record daily precipitation	30.0 mm (1.2 in)	23 of 100 (Routine)
Tambarmering	Australia	Record daily precipitation	26.7 mm (1.1 in)	23 of 100 (Routine)
Double Island Point Lighthouse	Australia	Record daily precipitation	78.7 mm (3.1 in)	23 of 100 (Routine)
Nagarcoil	India	Record daily precipitation	76.2 mm (3.0 in)	23 of 100 (Routine)
Umea	Sweden	Record low minimum temperature	-5.5 C (22.1 F)	23 of 100 (Routine)
Washington 2 ESE	United States	Record daily precipitation	33.3 mm (1.3 in)	23 of 100 (Routine)
Pawhuska	United States	Record daily precipitation	29.2 mm (1.1 in)	23 of 100 (Routine)
Lindsay	Canada	Record high minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Poretskoye	Russia	Record low maximum temperature	4.8 C (40.6 F)	22 of 100 (Routine)
Toccoa	United States	Record daily precipitation	38.1 mm (1.5 in)	22 of 100 (Routine)
Layton 3 NW	United States	Record high minimum temperature	17.2 C (63.0 F)	22 of 100 (Routine)
Luling	United States	Record daily precipitation	59.7 mm (2.4 in)	22 of 100 (Routine)
Olaa 92	United States	Record high maximum temperature	31.7 C (89.1 F)	22 of 100 (Routine)
Burracoppin	Australia	Record daily precipitation	54.6 mm (2.1 in)	21 of 100 (Routine)
The Oaks	Australia	Record daily precipitation	29.5 mm (1.2 in)	21 of 100 (Routine)
Borzja	Russia	Record low minimum temperature	-9.6 C (14.7 F)	21 of 100 (Routine)
Oneonta 1 S	United States	Record high minimum temperature	16.1 C (61.0 F)	21 of 100 (Routine)
York 3 SSW Pump STN	United States	Record high minimum temperature	17.8 C (64.0 F)	21 of 100 (Routine)
Ravensthorpe	Australia	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Pembroke Eddy Match	Canada	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Nangeenan	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Kazan	Russia	Record daily precipitation	11.8 mm (0.5 in)	20 of 100 (Routine)
Cuttening	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Rugby	United States	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Kokardine	Australia	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Dunvegan	Canada	Record daily precipitation	0.8 mm (0.03 in)	20 of 100 (Routine)
Cumberland	South Africa	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)

Counts by Type and Timescale

345 records

Records set or tied on 9 May 1939 by type: Highest daily maximum 20, Lowest daily maximum 9, Highest daily minimum 135, Lowest daily minimum 16, Heaviest daily rainfall 165.

Records on 9 May 1939 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	9
Highest daily minimum	135
Lowest daily minimum	16
Heaviest daily rainfall	165
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 9 May 1939 by timescale: all-time 0, monthly 5, daily 340.

How Much Records Were Beaten By

284 broken records

Margins by which the 284 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 117.4. Ties are not counted.

Top 20 by Significance

9 May 1939

Top 20 records on 9 May 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1939	Port Hedland Post Office, AU	monthly rain	162.1 mm (6.4 in)	69.1 mm (2.7 in)	17 years	59 of 100 (Notable)
9 May 1939	Southern Cross, AU	daily rain	52.1 mm (2.1 in)	41.7 mm (1.6 in)	24 years	52 of 100 (Notable)
9 May 1939	Boodarie, AU	daily rain	49.5 mm (1.9 in)	49.5 mm (1.9 in)	47 years	49 of 100 (Notable)
9 May 1939	Planknek, ZA	monthly rain	46.2 mm (1.8 in)	20.8 mm (0.8 in)	15 years	47 of 100 (Notable)
9 May 1939	Walk Walkin, AU	daily rain	30.0 mm (1.2 in)	23.1 mm (0.9 in)	8 years	45 of 100 (Notable)
9 May 1939	Thamaraikulam, IN	daily rain	111.5 mm (4.4 in)	86.1 mm (3.4 in)	8 years	45 of 100 (Notable)
9 May 1939	Strelley, AU	daily rain	120.7 mm (4.8 in)	117.4 mm (4.6 in)	24 years	44 of 100 (Notable)
9 May 1939	Jennaberring, AU	daily rain	37.1 mm (1.5 in)	23.4 mm (0.9 in)	8 years	42 of 100 (Notable)
9 May 1939	Kilauea 1134, US	daily rain	46.2 mm (1.8 in)	34.3 mm (1.4 in)	33 years	42 of 100 (Notable)
9 May 1939	Cowcowing, AU	daily rain	34.0 mm (1.3 in)	25.1 mm (1.0 in)	2 years	41 of 100 (Notable)
9 May 1939	Doongin Peak, AU	daily rain	38.4 mm (1.5 in)	26.5 mm (1.0 in)	8 years	41 of 100 (Notable)
9 May 1939	Kahuku 912, US	daily rain	29.2 mm (1.1 in)	21.8 mm (0.9 in)	25 years	40 of 100 (Notable)
9 May 1939	Dowerin, AU	daily rain	38.6 mm (1.5 in)	24.9 mm (1.0 in)	8 years	39 of 100 (Notable)
9 May 1939	Mangowine, AU	daily rain	30.5 mm (1.2 in)	20.3 mm (0.8 in)	18 years	39 of 100 (Notable)
9 May 1939	Albany 3 SE, US	daily rain	59.9 mm (2.4 in)	36.5 mm (1.4 in)	32 years	36 of 100 (Notable)
9 May 1939	Covington, US	daily rain	35.6 mm (1.4 in)	25.9 mm (1.0 in)	28 years	33 of 100 (Routine)
9 May 1939	Montreal McGill, CA	daily rain	26.9 mm (1.1 in)	6.6 mm (0.26 in)	60 years	32 of 100 (Routine)
9 May 1939	Nungarin, AU	daily rain	26.2 mm (1.0 in)	16.5 mm (0.6 in)	2 years	31 of 100 (Routine)
9 May 1939	Merredin, AU	daily rain	25.7 mm (1.0 in)	16.0 mm (0.6 in)	2 years	29 of 100 (Routine)
9 May 1939	Eraniel, IN	daily rain	67.3 mm (2.6 in)	50.8 mm (2.0 in)	8 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

1793 to 1939

Records set or tied on this calendar date in each year from 1793 to 1939. 1939 had 345 records.

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

Records on 05-09 in each year
Year	Records
1793	1
1795	1
1806	1
1810	1
1823	1
1834	1
1838	1
1843	1
1845	2
1846	1
1848	1
1850	2
1855	2
1857	1
1858	1
1861	1
1862	1
1864	2
1865	2
1867	2
1872	1
1873	2
1874	1
1875	2
1879	4
1880	3
1882	1
1883	2
1884	3
1885	3
1889	3
1890	3
1891	3
1892	1
1893	1
1895	2
1896	4
1897	3
1898	3
1899	2
1900	2
1901	9
1902	8
1903	9
1904	14
1905	34
1906	41
1907	11
1908	16
1909	34
1910	45
1911	23
1912	23
1913	15
1914	43
1915	27
1916	26
1917	50
1918	49
1919	47
1920	56
1921	102
1922	45
1923	461
1924	262
1925	123
1926	196
1927	343
1928	302
1929	166
1930	526
1931	411
1932	132
1933	482
1934	750
1935	111
1936	622
1937	128
1938	171
1939	345
1940	237
1941	335
1942	180
1943	524
1944	412
1945	538
1946	278
1947	1,145
1948	379
1949	417
1950	660
1951	188
1952	348
1953	507
1954	489
1955	288
1956	722
1957	505
1958	355
1959	252
1960	748
1961	516
1962	435
1963	1,103
1964	503
1965	730
1966	994
1967	681
1968	545
1969	653
1970	372
1971	338
1972	587
1973	386
1974	699
1975	465
1976	714
1977	931
1978	649
1979	1,605
1980	1,030
1981	639
1982	523
1983	872
1984	892
1985	829
1986	1,253
1987	1,481
1988	594
1989	1,347
1990	850
1991	759
1992	1,476
1993	967
1994	573
1995	960
1996	1,260
1997	1,088
1998	1,182
1999	970
2000	1,114
2001	969
2002	1,489
2003	1,802
2004	926
2005	851
2006	738
2007	765
2008	693
2009	816
2010	764
2011	1,104
2012	686
2013	684
2014	754
2015	689
2016	917
2017	539
2018	879
2019	1,043
2020	1,673
2021	501
2022	1,308
2023	474
2024	792
2025	622
2026	309

Download the Data

Data for records on 1939-05-09: 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 20	259
20 to 40	19
40 to 60	3
60 to 80	1
80 to 100	1
100 to 120	1