Weather Records on 9 May 1947

1,145 weather records were set or tied worldwide on 9 May 1947. Highest significance: Tadoussac, CA.

Key Facts for 9 May 1947

On 9 May 1947, 1,145 weather records were set or tied at long-record stations worldwide.
171 were record highs and 799 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 121 monthly and 1,023 daily.
Tadoussac set a monthly record daily precipitation of 55.9 mm (2.2 in) on 9 May 1947.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 428 records.

Record Map

1,145 stations

1,145 station records on 9 May 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tadoussac	Canada	Record daily precipitation	55.9 mm (2.2 in)	56 of 100 (Notable)
Pierce Rs	United States	Record daily precipitation	38.6 mm (1.5 in)	52 of 100 (Notable)
Columbia Falls 5 SW	United States	Record daily precipitation	38.1 mm (1.5 in)	48 of 100 (Notable)
Kooskia	United States	Record daily precipitation	37.8 mm (1.5 in)	46 of 100 (Notable)
Rayagada	India	Record daily precipitation	61.2 mm (2.4 in)	43 of 100 (Notable)
Black Lake	United States	Record daily precipitation	36.1 mm (1.4 in)	40 of 100 (Notable)
Sausar	India	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Katol	India	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Tasgaon	India	Record daily precipitation	38.1 mm (1.5 in)	39 of 100 (Notable)
Alagoa Nova (Laranjeiras)	Brazil	Record daily precipitation	58.7 mm (2.3 in)	38 of 100 (Notable)
Tucumcari 4 NE	United States	Record daily precipitation	49.8 mm (2.0 in)	38 of 100 (Notable)
Morgantown 1	United States	Record low maximum temperature	6.7 C (44.1 F)	37 of 100 (Notable)
Santa Luzia	Brazil	Record daily precipitation	48.0 mm (1.9 in)	36 of 100 (Notable)
Santa Fe	United States	Record daily precipitation	26.7 mm (1.1 in)	36 of 100 (Notable)
Pembroke Eddy Match	Canada	Record low minimum temperature	-3.9 C (25.0 F)	34 of 100 (Routine)
Stratford	Canada	Record low minimum temperature	-3.9 C (25.0 F)	33 of 100 (Routine)
Atalaia	Brazil	Record daily precipitation	106.5 mm (4.2 in)	32 of 100 (Routine)
Bom Jardim	Brazil	Record daily precipitation	90.5 mm (3.6 in)	31 of 100 (Routine)
Parry Sound	Canada	Record low minimum temperature	-3.9 C (25.0 F)	31 of 100 (Routine)
Coatesville 1 SW	United States	Record low minimum temperature	-3.9 C (25.0 F)	31 of 100 (Routine)
Hobart Muni AP	United States	Record daily precipitation	51.8 mm (2.0 in)	31 of 100 (Routine)
Brockville	Canada	Record low maximum temperature	8.9 C (48.0 F)	30 of 100 (Routine)
Coldwater	Canada	Record low maximum temperature	2.2 C (36.0 F)	30 of 100 (Routine)
Huntsville	Canada	Record low minimum temperature	-5.0 C (23.0 F)	30 of 100 (Routine)
Greencastle 1 W	United States	Record low minimum temperature	-2.2 C (28.0 F)	30 of 100 (Routine)
Williamsburg 2	United States	Record low minimum temperature	-3.3 C (26.1 F)	30 of 100 (Routine)
Trenton 2	United States	Record low minimum temperature	0.0 C (32.0 F)	30 of 100 (Routine)
World Trade Ctr	United States	Record low maximum temperature	9.4 C (48.9 F)	30 of 100 (Routine)
Mexia	United States	Record daily precipitation	91.4 mm (3.6 in)	30 of 100 (Routine)
Cairo 3 S	United States	Record low minimum temperature	-4.4 C (24.1 F)	30 of 100 (Routine)
Fort Macleod	Canada	Record high minimum temperature	12.2 C (54.0 F)	29 of 100 (Routine)
Quebec	Canada	Record low minimum temperature	-1.7 C (28.9 F)	29 of 100 (Routine)
Middletown 4 W	United States	Record low maximum temperature	10.0 C (50.0 F)	29 of 100 (Routine)
Fallston	United States	Record low minimum temperature	-2.2 C (28.0 F)	29 of 100 (Routine)
Irwin	United States	Record low maximum temperature	5.0 C (41.0 F)	29 of 100 (Routine)
Quakertown	United States	Record low maximum temperature	10.0 C (50.0 F)	29 of 100 (Routine)
Runge	United States	Record daily precipitation	41.4 mm (1.6 in)	29 of 100 (Routine)
Goderich	Canada	Record low maximum temperature	3.9 C (39.0 F)	28 of 100 (Routine)
Maysville Wwtp	United States	Record low minimum temperature	-1.7 C (28.9 F)	28 of 100 (Routine)
Middlesboro Fire Dept	United States	Record low minimum temperature	-2.2 C (28.0 F)	28 of 100 (Routine)
Cheltenham 1 NW	United States	Record low minimum temperature	-2.8 C (27.0 F)	28 of 100 (Routine)
Jersey City	United States	Record low minimum temperature	0.6 C (33.1 F)	28 of 100 (Routine)
Waynesville 1 E	United States	Record low minimum temperature	-3.3 C (26.1 F)	28 of 100 (Routine)
North Bay	Canada	Record low minimum temperature	-6.1 C (21.0 F)	27 of 100 (Routine)
Whitestown	United States	Record low minimum temperature	-4.4 C (24.1 F)	27 of 100 (Routine)
Frederick Police Brks	United States	Record low minimum temperature	-3.3 C (26.1 F)	27 of 100 (Routine)
Frostburg	United States	Record low maximum temperature	4.4 C (39.9 F)	27 of 100 (Routine)
Chestnut Hill	United States	Record low maximum temperature	8.3 C (46.9 F)	27 of 100 (Routine)
Newton	United States	Record low maximum temperature	7.8 C (46.0 F)	27 of 100 (Routine)
Aurora	United States	Record daily precipitation	39.4 mm (1.6 in)	27 of 100 (Routine)
Emporium 1 E	United States	Record low maximum temperature	3.9 C (39.0 F)	27 of 100 (Routine)
New Canton	United States	Record low minimum temperature	-2.8 C (27.0 F)	27 of 100 (Routine)
Buckhannon	United States	Record low minimum temperature	-4.4 C (24.1 F)	27 of 100 (Routine)
Honomanu 450	United States	Record daily precipitation	126.0 mm (5.0 in)	27 of 100 (Routine)
Kahuku 912	United States	Record high minimum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Pembroke Eddy Match	Canada	Record low maximum temperature	6.7 C (44.1 F)	26 of 100 (Routine)
Vestervig	Denmark	Record high maximum temperature	24.5 C (76.1 F)	26 of 100 (Routine)
Takoma Park # 1	United States	Record low minimum temperature	0.6 C (33.1 F)	26 of 100 (Routine)
Westminster 2 SSE	United States	Record low minimum temperature	-2.2 C (28.0 F)	26 of 100 (Routine)
Lake Cochituate	United States	Record low maximum temperature	9.4 C (48.9 F)	26 of 100 (Routine)

Counts by Type and Timescale

1,145 records

Records set or tied on 9 May 1947 by type: Highest daily maximum 54, Lowest daily maximum 256, Highest daily minimum 117, Lowest daily minimum 543, Heaviest daily rainfall 173, Heaviest daily snowfall 2.

Records on 9 May 1947 by type
Record type	Records
Highest daily maximum	54
Lowest daily maximum	256
Highest daily minimum	117
Lowest daily minimum	543
Heaviest daily rainfall	173
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 9 May 1947 by timescale: all-time 1, monthly 121, daily 1,023.

How Much Records Were Beaten By

927 broken records

Margins by which the 927 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 55.5. Ties are not counted.

Top 20 by Significance

9 May 1947

Top 20 records on 9 May 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1947	Tadoussac, CA	monthly rain	55.9 mm (2.2 in)	22.9 mm (0.9 in)	32 years	56 of 100 (Notable)
9 May 1947	Pierce Rs, US	daily rain	38.6 mm (1.5 in)	27.7 mm (1.1 in)	30 years	52 of 100 (Notable)
9 May 1947	Columbia Falls 5 SW, US	daily rain	38.1 mm (1.5 in)	21.8 mm (0.9 in)	41 years	48 of 100 (Notable)
9 May 1947	Kooskia, US	daily rain	37.8 mm (1.5 in)	28.1 mm (1.1 in)	12 years	46 of 100 (Notable)
9 May 1947	Rayagada, IN	daily rain	61.2 mm (2.4 in)	47.7 mm (1.9 in)	16 years	43 of 100 (Notable)
9 May 1947	Black Lake, US	daily rain	36.1 mm (1.4 in)	21.9 mm (0.9 in)	28 years	40 of 100 (Notable)
9 May 1947	Sausar, IN	daily rain	25.4 mm (1.0 in)	22.1 mm (0.9 in)	20 years	39 of 100 (Notable)
9 May 1947	Katol, IN	daily rain	25.4 mm (1.0 in)	16.3 mm (0.6 in)	28 years	39 of 100 (Notable)
9 May 1947	Tasgaon, IN	daily rain	38.1 mm (1.5 in)	34.3 mm (1.4 in)	28 years	39 of 100 (Notable)
9 May 1947	Alagoa Nova (Laranjeiras), BR	daily rain	58.7 mm (2.3 in)	38.2 mm (1.5 in)	22 years	38 of 100 (Notable)
9 May 1947	Tucumcari 4 NE, US	daily rain	49.8 mm (2.0 in)	33.3 mm (1.3 in)	40 years	38 of 100 (Notable)
9 May 1947	Morgantown 1, US	monthly low max	6.7 C (44.1 F)	0.5 C (0.9 F)	68 years	37 of 100 (Notable)
9 May 1947	Santa Luzia, BR	daily rain	48.0 mm (1.9 in)	36.0 mm (1.4 in)	25 years	36 of 100 (Notable)
9 May 1947	Santa Fe, US	daily rain	26.7 mm (1.1 in)	10.7 mm (0.4 in)	40 years	36 of 100 (Notable)
9 May 1947	Pembroke Eddy Match, CA	daily low min	-3.9 C (25.0 F)	3.3 C (5.9 F)	63 years	34 of 100 (Routine)
9 May 1947	Stratford, CA	daily low min	-3.9 C (25.0 F)	1.7 C (3.1 F)	75 years	33 of 100 (Routine)
9 May 1947	Atalaia, BR	all-time rain	106.5 mm (4.2 in)	11.8 mm (0.5 in)	0 years	32 of 100 (Routine)
9 May 1947	Bom Jardim, BR	daily rain	90.5 mm (3.6 in)	55.5 mm (2.2 in)	22 years	31 of 100 (Routine)
9 May 1947	Parry Sound, CA	daily low min	-3.9 C (25.0 F)	2.2 C (4.0 F)	67 years	31 of 100 (Routine)
9 May 1947	Coatesville 1 SW, US	monthly low min	-3.9 C (25.0 F)	1.7 C (3.1 F)	44 years	31 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 1947

Records set or tied on this calendar date in each year from 1793 to 1947. 1947 had 1,145 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 1947-05-09: 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 10	877
10 to 20	30
20 to 30	12
30 to 40	5
40 to 50	2
50 to 60	1