Weather Records on 15 May 1947

334 weather records were set or tied worldwide on 15 May 1947. Highest significance: Pesaro, IT.

Key Facts for 15 May 1947

On 15 May 1947, 334 weather records were set or tied at long-record stations worldwide.
86 were record highs and 118 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 325 daily.
Pesaro set a monthly record daily precipitation of 81.4 mm (3.2 in) on 15 May 1947.
Across 162 earlier years (1820 to 2026) the same calendar date averaged 431 records.

Record Map

334 stations

334 station records on 15 May 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 May 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pesaro	Italy	Record daily precipitation	81.4 mm (3.2 in)	69 of 100 (Major)
Regensburg	Germany	Record daily precipitation	34.5 mm (1.4 in)	66 of 100 (Major)
Perryton	United States	Record daily precipitation	96.5 mm (3.8 in)	51 of 100 (Notable)
Rayachoti	India	Record daily precipitation	70.1 mm (2.8 in)	44 of 100 (Notable)
Perry	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Wheaton	United States	Record daily precipitation	61.0 mm (2.4 in)	42 of 100 (Notable)
Limon 10 SSW	United States	Record daily precipitation	36.1 mm (1.4 in)	40 of 100 (Notable)
Aach	Germany	Record daily precipitation	30.8 mm (1.2 in)	36 of 100 (Notable)
Nordby (Fano)	Denmark	Record high maximum temperature	29.5 C (85.1 F)	34 of 100 (Routine)
Ayikudi	India	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record daily precipitation	45.0 mm (1.8 in)	33 of 100 (Routine)
Sankarankoil	India	Record daily precipitation	27.4 mm (1.1 in)	32 of 100 (Routine)
Tenkasi	India	Record daily precipitation	39.9 mm (1.6 in)	31 of 100 (Routine)
Oracle	United States	Record low maximum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Stanton	United States	Record daily precipitation	33.8 mm (1.3 in)	28 of 100 (Routine)
Stuttgart-Stadt	Germany	Record daily precipitation	29.3 mm (1.2 in)	27 of 100 (Routine)
Srivilliputhur	India	Record daily precipitation	64.0 mm (2.5 in)	27 of 100 (Routine)
Deerfield 10 NNW	United States	Record daily precipitation	33.3 mm (1.3 in)	27 of 100 (Routine)
Norfolk	United States	Record daily precipitation	31.5 mm (1.2 in)	27 of 100 (Routine)
Gaspe	Canada	Record low maximum temperature	-4.4 C (24.1 F)	26 of 100 (Routine)
Gaspe	Canada	Record low minimum temperature	-11.1 C (12.0 F)	25 of 100 (Routine)
Two Buttes	United States	Record daily precipitation	25.4 mm (1.0 in)	25 of 100 (Routine)
Wellington	United States	Record daily precipitation	26.7 mm (1.1 in)	25 of 100 (Routine)
Hyannis	United States	Record low minimum temperature	0.0 C (32.0 F)	25 of 100 (Routine)
Glen Boughton	Australia	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record daily precipitation	30.3 mm (1.2 in)	24 of 100 (Routine)
Pueblo City Rsvr	United States	Record daily precipitation	33.0 mm (1.3 in)	24 of 100 (Routine)
Blue Hill Coop	United States	Record low minimum temperature	2.2 C (36.0 F)	24 of 100 (Routine)
Ione	United States	Record daily precipitation	31.8 mm (1.3 in)	24 of 100 (Routine)
Paducah 2 WNW	United States	Record daily precipitation	36.6 mm (1.4 in)	24 of 100 (Routine)
Fredericton Cda	Canada	Record low minimum temperature	-5.0 C (23.0 F)	23 of 100 (Routine)
Nappan Cda	Canada	Record low minimum temperature	-5.6 C (21.9 F)	23 of 100 (Routine)
Panchgani	India	Record daily precipitation	53.3 mm (2.1 in)	23 of 100 (Routine)
Orleans	United States	Record low minimum temperature	2.2 C (36.0 F)	23 of 100 (Routine)
Lake Moraine	United States	Record daily precipitation	26.7 mm (1.1 in)	23 of 100 (Routine)
Ordway 4 W	United States	Record daily precipitation	25.4 mm (1.0 in)	23 of 100 (Routine)
Lowell	United States	Record low minimum temperature	0.0 C (32.0 F)	23 of 100 (Routine)
Schuyler	United States	Record daily precipitation	36.1 mm (1.4 in)	23 of 100 (Routine)
Quakertown	United States	Record low maximum temperature	12.2 C (54.0 F)	23 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record high minimum temperature	12.2 C (54.0 F)	22 of 100 (Routine)
Nogales	United States	Record low maximum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Dahlonega 4WSW	United States	Record high maximum temperature	32.8 C (91.0 F)	22 of 100 (Routine)
Ness City	United States	Record daily precipitation	34.0 mm (1.3 in)	22 of 100 (Routine)
Plains	United States	Record daily precipitation	30.7 mm (1.2 in)	22 of 100 (Routine)
Natchez	United States	Record high minimum temperature	23.9 C (75.0 F)	22 of 100 (Routine)
Brownwood 2NE	United States	Record high minimum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Seymour 3NW	United States	Record high minimum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Umea	Sweden	Record high minimum temperature	7.5 C (45.5 F)	21 of 100 (Routine)
Searcy	United States	Record high maximum temperature	32.2 C (90.0 F)	21 of 100 (Routine)
Dover	United States	Record low maximum temperature	15.0 C (59.0 F)	21 of 100 (Routine)
Bloomington Indiana UNIV	United States	Record high maximum temperature	32.8 C (91.0 F)	21 of 100 (Routine)
Syracuse 1NE	United States	Record daily precipitation	36.8 mm (1.4 in)	21 of 100 (Routine)
Easton	United States	Record low maximum temperature	15.0 C (59.0 F)	21 of 100 (Routine)
Framingham	United States	Record low minimum temperature	0.0 C (32.0 F)	21 of 100 (Routine)
Ft Reno	United States	Record daily precipitation	81.8 mm (3.2 in)	21 of 100 (Routine)
Walhalla	United States	Record high maximum temperature	33.3 C (91.9 F)	21 of 100 (Routine)
Dalhart Exp STN	United States	Record daily precipitation	38.4 mm (1.5 in)	21 of 100 (Routine)
Semej	Kazakhstan	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record daily precipitation	19.5 mm (0.8 in)	20 of 100 (Routine)
Edgewater	United States	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)

Counts by Type and Timescale

334 records

Records set or tied on 15 May 1947 by type: Highest daily maximum 34, Lowest daily maximum 47, Highest daily minimum 52, Lowest daily minimum 71, Heaviest daily rainfall 127, Heaviest daily snowfall 3.

Records on 15 May 1947 by type
Record type	Records
Highest daily maximum	34
Lowest daily maximum	47
Highest daily minimum	52
Lowest daily minimum	71
Heaviest daily rainfall	127
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 15 May 1947 by timescale: all-time 0, monthly 9, daily 325.

How Much Records Were Beaten By

260 broken records

Margins by which the 260 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 61.5. Ties are not counted.

Top 20 by Significance

15 May 1947

Top 20 records on 15 May 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 May 1947	Pesaro, IT	monthly rain	81.4 mm (3.2 in)	36.4 mm (1.4 in)	41 years	69 of 100 (Major)
15 May 1947	Regensburg, DE	daily rain	34.5 mm (1.4 in)	27.3 mm (1.1 in)	67 years	66 of 100 (Major)
15 May 1947	Perryton, US	monthly rain	96.5 mm (3.8 in)	34.8 mm (1.4 in)	10 years	51 of 100 (Notable)
15 May 1947	Rayachoti, IN	daily rain	70.1 mm (2.8 in)	61.5 mm (2.4 in)	28 years	44 of 100 (Notable)
15 May 1947	Perry, US	daily rain	50.8 mm (2.0 in)	44.4 mm (1.7 in)	42 years	43 of 100 (Notable)
15 May 1947	Wheaton, US	daily rain	61.0 mm (2.4 in)	33.8 mm (1.3 in)	30 years	42 of 100 (Notable)
15 May 1947	Limon 10 SSW, US	daily rain	36.1 mm (1.4 in)	23.4 mm (0.9 in)	26 years	40 of 100 (Notable)
15 May 1947	Aach, DE	daily rain	30.8 mm (1.2 in)	14.8 mm (0.6 in)	29 years	36 of 100 (Notable)
15 May 1947	Nordby (Fano), DK	monthly high max	29.5 C (85.1 F)	1.2 C (2.2 F)	51 years	34 of 100 (Routine)
15 May 1947	Ayikudi, IN	daily rain	38.1 mm (1.5 in)	30.5 mm (1.2 in)	13 years	34 of 100 (Routine)
15 May 1947	Cheyenne Wells 2NE, US	daily rain	45.0 mm (1.8 in)	23.9 mm (0.9 in)	16 years	33 of 100 (Routine)
15 May 1947	Sankarankoil, IN	daily rain	27.4 mm (1.1 in)	26.4 mm (1.0 in)	14 years	32 of 100 (Routine)
15 May 1947	Tenkasi, IN	daily rain	39.9 mm (1.6 in)	39.1 mm (1.5 in)	9 years	31 of 100 (Routine)
15 May 1947	Oracle, US	daily low max	17.2 C (63.0 F)	5.0 C (9.0 F)	44 years	30 of 100 (Routine)
15 May 1947	Stanton, US	daily rain	33.8 mm (1.3 in)	13.5 mm (0.5 in)	42 years	28 of 100 (Routine)
15 May 1947	Stuttgart-Stadt, DE	daily rain	29.3 mm (1.2 in)	15.1 mm (0.6 in)	4 years	27 of 100 (Routine)
15 May 1947	Srivilliputhur, IN	daily rain	64.0 mm (2.5 in)	23.4 mm (0.9 in)	13 years	27 of 100 (Routine)
15 May 1947	Deerfield 10 NNW, US	daily rain	33.3 mm (1.3 in)	20.6 mm (0.8 in)	24 years	27 of 100 (Routine)
15 May 1947	Norfolk, US	daily rain	31.5 mm (1.2 in)	8.9 mm (0.35 in)	50 years	27 of 100 (Routine)
15 May 1947	Gaspe, CA	daily low max	-4.4 C (24.1 F)	8.3 C (14.9 F)	20 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

1820 to 1947

Records set or tied on this calendar date in each year from 1820 to 1947. 1947 had 334 records.

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

Records on 05-15 in each year
Year	Records
1820	1
1825	1
1831	1
1832	1
1837	2
1845	1
1847	2
1848	1
1855	2
1857	2
1859	1
1862	1
1863	1
1865	1
1866	2
1867	1
1868	2
1870	1
1871	3
1874	2
1876	4
1878	1
1879	2
1881	1
1883	1
1885	1
1886	2
1888	3
1891	3
1893	5
1894	2
1895	4
1896	2
1897	4
1898	3
1899	9
1900	9
1901	2
1902	9
1903	4
1904	13
1905	16
1906	10
1907	27
1908	25
1909	89
1910	27
1911	27
1912	26
1913	60
1914	16
1915	236
1916	27
1917	80
1918	133
1919	25
1920	58
1921	92
1922	30
1923	125
1924	174
1925	100
1926	161
1927	191
1928	144
1929	161
1930	136
1931	459
1932	368
1933	439
1934	227
1935	288
1936	372
1937	373
1938	393
1939	351
1940	179
1941	454
1942	701
1943	568
1944	630
1945	588
1946	238
1947	334
1948	264
1949	363
1950	260
1951	736
1952	476
1953	426
1954	355
1955	538
1956	466
1957	521
1958	605
1959	764
1960	291
1961	508
1962	1,128
1963	782
1964	347
1965	320
1966	389
1967	609
1968	1,019
1969	790
1970	512
1971	351
1972	484
1973	818
1974	1,230
1975	372
1976	803
1977	1,186
1978	922
1979	404
1980	625
1981	586
1982	500
1983	1,215
1984	1,059
1985	649
1986	679
1987	1,073
1988	643
1989	552
1990	776
1991	1,179
1992	944
1993	784
1994	910
1995	1,750
1996	1,452
1997	1,175
1998	1,641
1999	810
2000	850
2001	1,280
2002	801
2003	1,023
2004	1,046
2005	767
2006	955
2007	949
2008	995
2009	675
2010	1,088
2011	1,298
2012	751
2013	1,081
2014	1,411
2015	717
2016	890
2017	435
2018	1,074
2019	627
2020	472
2021	412
2022	847
2023	566
2024	596
2025	801
2026	481

Download the Data

Data for records on 1947-05-15: 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	212
10 to 20	29
20 to 30	11
30 to 40	5
40 to 50	1
50 to 60	1
60 to 70	1