Weather Records on 7 May 1947

727 weather records were set or tied worldwide on 7 May 1947. Highest significance: Roberval Nord, CA.

Key Facts for 7 May 1947

On 7 May 1947, 727 weather records were set or tied at long-record stations worldwide.
366 were record highs and 249 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 711 daily.
Roberval Nord set a monthly record daily snowfall of 20.3 cm (8.0 in) on 7 May 1947.
Across 168 earlier years (1795 to 2026) the same calendar date averaged 417 records.

Record Map

727 stations

727 station records on 7 May 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 7 May 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Roberval Nord	Canada	Record daily snowfall	20.3 cm (8.0 in)	53 of 100 (Notable)
Vertentes	Brazil	Record daily precipitation	58.5 mm (2.3 in)	50 of 100 (Notable)
Old Mapoon	Australia	Record daily precipitation	41.1 mm (1.6 in)	42 of 100 (Notable)
Healdsburg	United States	Record high minimum temperature	19.4 C (66.9 F)	42 of 100 (Notable)
Pembroke Eddy Match	Canada	Record low maximum temperature	4.4 C (39.9 F)	36 of 100 (Notable)
Stratford	Canada	Record low maximum temperature	2.8 C (37.0 F)	35 of 100 (Notable)
La Pocatiere Cda	Canada	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Caucaia	Brazil	Record daily precipitation	97.6 mm (3.8 in)	32 of 100 (Routine)
Welland	Canada	Record low maximum temperature	6.1 C (43.0 F)	32 of 100 (Routine)
Blackfoot Fire Dept	United States	Record high minimum temperature	14.4 C (57.9 F)	31 of 100 (Routine)
Gladwin	United States	Record low maximum temperature	3.3 C (37.9 F)	31 of 100 (Routine)
Guaraciaba Do Norte	Brazil	Record daily precipitation	69.0 mm (2.7 in)	30 of 100 (Routine)
Paso Robles	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Jamestown	United States	Record low maximum temperature	3.3 C (37.9 F)	29 of 100 (Routine)
Conconully	United States	Record high minimum temperature	12.8 C (55.0 F)	28 of 100 (Routine)
Fortaleza (Escola Regional)	Brazil	Record daily precipitation	92.6 mm (3.6 in)	27 of 100 (Routine)
Areia (Ufpb)	Brazil	Record daily precipitation	63.0 mm (2.5 in)	27 of 100 (Routine)
Alton	Canada	Record low maximum temperature	3.3 C (37.9 F)	27 of 100 (Routine)
Clontarf	Canada	Record low maximum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
Haliburton A	Canada	Record low maximum temperature	3.9 C (39.0 F)	26 of 100 (Routine)
Rosedale	United States	Record daily precipitation	38.1 mm (1.5 in)	26 of 100 (Routine)
Hermiston 1 SE	United States	Record high minimum temperature	14.4 C (57.9 F)	26 of 100 (Routine)
Colfax	United States	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Waterville	United States	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Itapage	Brazil	Record daily precipitation	54.2 mm (2.1 in)	25 of 100 (Routine)
Quesnel	Canada	Record high minimum temperature	11.7 C (53.1 F)	25 of 100 (Routine)
Vernon Coldstream Ranch	Canada	Record high minimum temperature	12.2 C (54.0 F)	25 of 100 (Routine)
Ottawa Cda	Canada	Record low maximum temperature	6.1 C (43.0 F)	25 of 100 (Routine)
Petropavlovsk-Kamchatskij	Russia	Record high maximum temperature	9.9 C (49.8 F)	25 of 100 (Routine)
E Tawas	United States	Record low maximum temperature	5.0 C (41.0 F)	25 of 100 (Routine)
Hatch	United States	Record high minimum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Sobral	Brazil	Record daily precipitation	50.5 mm (2.0 in)	24 of 100 (Routine)
Vernon	Canada	Record high minimum temperature	12.8 C (55.0 F)	24 of 100 (Routine)
Collingwood	Canada	Record low maximum temperature	5.6 C (42.1 F)	24 of 100 (Routine)
Southampton	Canada	Record low maximum temperature	1.1 C (34.0 F)	24 of 100 (Routine)
Petropavlovskij Majak	Russia	Record high maximum temperature	9.9 C (49.8 F)	24 of 100 (Routine)
Priest Rvr Exp STN	United States	Record high maximum temperature	29.4 C (84.9 F)	24 of 100 (Routine)
Mio Hydro Plt	United States	Record low maximum temperature	2.2 C (36.0 F)	24 of 100 (Routine)
State College	United States	Record low minimum temperature	0.0 C (32.0 F)	24 of 100 (Routine)
Ephrata	United States	Record high minimum temperature	18.9 C (66.0 F)	24 of 100 (Routine)
Lake Kachess	United States	Record high minimum temperature	7.8 C (46.0 F)	24 of 100 (Routine)
Nespelem 2 S	United States	Record high maximum temperature	32.8 C (91.0 F)	24 of 100 (Routine)
Rosalia	United States	Record high minimum temperature	13.9 C (57.0 F)	24 of 100 (Routine)
Reading Wb City	United States	Record low minimum temperature	3.3 C (37.9 F)	24 of 100 (Routine)
Spokane Intl AP	United States	Record high minimum temperature	13.9 C (57.0 F)	24 of 100 (Routine)
Red Lodge	United States	Record high minimum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Deming	United States	Record high minimum temperature	18.9 C (66.0 F)	23 of 100 (Routine)
Toledo Blade	United States	Record low maximum temperature	5.6 C (42.1 F)	23 of 100 (Routine)
Cle Elum	United States	Record high minimum temperature	10.6 C (51.1 F)	23 of 100 (Routine)
Mistassini Post	Canada	Record low minimum temperature	-13.9 C (7.0 F)	22 of 100 (Routine)
Monghyr	India	Record daily precipitation	41.7 mm (1.6 in)	22 of 100 (Routine)
Casa Grande	United States	Record high maximum temperature	42.8 C (109.0 F)	22 of 100 (Routine)
Willcox	United States	Record high minimum temperature	14.4 C (57.9 F)	22 of 100 (Routine)
Hailey 3 NNW	United States	Record high maximum temperature	29.4 C (84.9 F)	22 of 100 (Routine)
Moscow U of I	United States	Record high maximum temperature	28.9 C (84.0 F)	22 of 100 (Routine)
Moscow U of I	United States	Record high minimum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Adrian 2 NNE	United States	Record low maximum temperature	6.1 C (43.0 F)	22 of 100 (Routine)
Cadiz	United States	Record low maximum temperature	9.4 C (48.9 F)	22 of 100 (Routine)
Modoc Orchard	United States	Record high minimum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Plainview	United States	Record daily precipitation	80.8 mm (3.2 in)	22 of 100 (Routine)

Counts by Type and Timescale

727 records

Records set or tied on 7 May 1947 by type: Highest daily maximum 205, Lowest daily maximum 128, Highest daily minimum 161, Lowest daily minimum 121, Heaviest daily rainfall 80, Heaviest daily snowfall 32.

Records on 7 May 1947 by type
Record type	Records
Highest daily maximum	205
Lowest daily maximum	128
Highest daily minimum	161
Lowest daily minimum	121
Heaviest daily rainfall	80
Heaviest daily snowfall	32
Deepest snow cover	0

Records on 7 May 1947 by timescale: all-time 0, monthly 16, daily 711.

How Much Records Were Beaten By

568 broken records

Margins by which the 568 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.0. Ties are not counted.

Top 20 by Significance

7 May 1947

Top 20 records on 7 May 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 May 1947	Roberval Nord, CA	monthly snowfall	20.3 cm (8.0 in)	10.1 cm (4.0 in)	56 years	53 of 100 (Notable)
7 May 1947	Vertentes, BR	daily rain	58.5 mm (2.3 in)	40.3 mm (1.6 in)	34 years	50 of 100 (Notable)
7 May 1947	Old Mapoon, AU	daily rain	41.1 mm (1.6 in)	35.5 mm (1.4 in)	44 years	42 of 100 (Notable)
7 May 1947	Healdsburg, US	daily high min	19.4 C (66.9 F)	7.2 C (13.0 F)	44 years	42 of 100 (Notable)
7 May 1947	Pembroke Eddy Match, CA	daily low max	4.4 C (39.9 F)	3.9 C (7.0 F)	75 years	36 of 100 (Notable)
7 May 1947	Stratford, CA	daily low max	2.8 C (37.0 F)	2.8 C (5.0 F)	79 years	35 of 100 (Notable)
7 May 1947	La Pocatiere Cda, CA	daily rain	31.8 mm (1.3 in)	18.6 mm (0.7 in)	24 years	35 of 100 (Notable)
7 May 1947	Caucaia, BR	daily rain	97.6 mm (3.8 in)	35.1 mm (1.4 in)	25 years	32 of 100 (Routine)
7 May 1947	Welland, CA	daily low max	6.1 C (43.0 F)	2.2 C (4.0 F)	72 years	32 of 100 (Routine)
7 May 1947	Blackfoot Fire Dept, US	daily high min	14.4 C (57.9 F)	6.1 C (11.0 F)	38 years	31 of 100 (Routine)
7 May 1947	Gladwin, US	monthly low max	3.3 C (37.9 F)	1.1 C (2.0 F)	51 years	31 of 100 (Routine)
7 May 1947	Guaraciaba Do Norte, BR	daily rain	69.0 mm (2.7 in)	35.7 mm (1.4 in)	20 years	30 of 100 (Routine)
7 May 1947	Paso Robles, US	daily high min	15.6 C (60.1 F)	3.4 C (6.1 F)	44 years	29 of 100 (Routine)
7 May 1947	Jamestown, US	monthly low max	3.3 C (37.9 F)	1.1 C (2.0 F)	44 years	29 of 100 (Routine)
7 May 1947	Conconully, US	daily high min	12.8 C (55.0 F)	3.4 C (6.1 F)	46 years	28 of 100 (Routine)
7 May 1947	Fortaleza (Escola Regional), BR	daily rain	92.6 mm (3.6 in)	29.6 mm (1.2 in)	26 years	27 of 100 (Routine)
7 May 1947	Areia (Ufpb), BR	daily rain	63.0 mm (2.5 in)	29.5 mm (1.2 in)	12 years	27 of 100 (Routine)
7 May 1947	Alton, CA	daily low max	3.3 C (37.9 F)	2.8 C (5.0 F)	56 years	27 of 100 (Routine)
7 May 1947	Clontarf, CA	daily low max	5.6 C (42.1 F)	2.2 C (4.0 F)	56 years	26 of 100 (Routine)
7 May 1947	Haliburton A, CA	daily low max	3.9 C (39.0 F)	2.2 C (4.0 F)	56 years	26 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

1795 to 1947

Records set or tied on this calendar date in each year from 1795 to 1947. 1947 had 727 records.

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

Records on 05-07 in each year
Year	Records
1795	2
1805	1
1816	1
1825	2
1837	1
1838	1
1844	1
1845	2
1846	1
1848	2
1850	2
1852	1
1853	1
1856	3
1857	1
1861	3
1862	1
1863	1
1864	1
1867	3
1869	1
1870	1
1872	1
1874	2
1876	3
1878	1
1879	2
1880	1
1884	2
1885	1
1886	4
1887	1
1888	1
1889	2
1890	4
1891	4
1892	2
1894	4
1895	2
1897	5
1898	7
1899	3
1900	10
1901	1
1902	6
1903	13
1904	19
1905	21
1906	15
1907	14
1908	29
1909	15
1910	16
1911	14
1912	14
1913	30
1914	37
1915	40
1916	34
1917	188
1918	60
1919	263
1920	59
1921	41
1922	40
1923	119
1924	141
1925	207
1926	227
1927	191
1928	204
1929	224
1930	637
1931	473
1932	288
1933	291
1934	698
1935	298
1936	466
1937	121
1938	467
1939	194
1940	317
1941	317
1942	270
1943	416
1944	476
1945	751
1946	339
1947	727
1948	338
1949	439
1950	526
1951	226
1952	485
1953	541
1954	481
1955	393
1956	665
1957	546
1958	585
1959	335
1960	899
1961	442
1962	381
1963	825
1964	687
1965	671
1966	762
1967	973
1968	756
1969	678
1970	822
1971	364
1972	515
1973	447
1974	743
1975	784
1976	782
1977	662
1978	925
1979	888
1980	593
1981	710
1982	802
1983	724
1984	1,300
1985	557
1986	1,163
1987	1,115
1988	752
1989	1,880
1990	1,024
1991	599
1992	1,830
1993	831
1994	621
1995	997
1996	880
1997	1,359
1998	1,166
1999	1,008
2000	1,693
2001	743
2002	1,344
2003	1,138
2004	1,397
2005	645
2006	833
2007	1,047
2008	526
2009	735
2010	1,123
2011	558
2012	709
2013	633
2014	646
2015	569
2016	677
2017	543
2018	542
2019	522
2020	577
2021	484
2022	784
2023	667
2024	858
2025	635
2026	715

Download the Data

Data for records on 1947-05-07: 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	552
20 to 40	13
40 to 60	2
60 to 80	0
80 to 100	0
100 to 120	1