Weather Records on 15 April 1975

780 weather records were set or tied worldwide on 15 April 1975. Highest significance: Riverside 7 SSW, US.

Key Facts for 15 April 1975

On 15 April 1975, 780 weather records were set or tied at long-record stations worldwide.
108 were record highs and 170 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 767 daily.
Riverside 7 SSW set a daily record precipitation of 27.2 mm (1.1 in) on 15 April 1975.
Across 159 earlier years (1801 to 2026) the same calendar date averaged 491 records.

Record Map

780 stations

780 station records on 15 April 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 April 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Riverside 7 SSW	United States	Record daily precipitation	27.2 mm (1.1 in)	56 of 100 (Notable)
Denton	United States	Record snow depth	30.5 cm (12.0 in)	54 of 100 (Notable)
Highland Home	United States	Record daily precipitation	83.8 mm (3.3 in)	53 of 100 (Notable)
Dickinson Exp STN	United States	Record snow depth	38.1 cm (15.0 in)	53 of 100 (Notable)
Diamond Springs	United States	Record daily precipitation	59.9 mm (2.4 in)	52 of 100 (Notable)
Eureka	United States	Record snow depth	33.0 cm (13.0 in)	51 of 100 (Notable)
Grundsjon	Sweden	Record daily precipitation	25.6 mm (1.0 in)	48 of 100 (Notable)
Edenton	United States	Record daily precipitation	59.7 mm (2.4 in)	47 of 100 (Notable)
Wickiup Dam	United States	Record snow depth	35.6 cm (14.0 in)	47 of 100 (Notable)
Derby	South Africa	Record daily precipitation	38.0 mm (1.5 in)	46 of 100 (Notable)
Hammenhog	Sweden	Record daily precipitation	25.3 mm (1.0 in)	46 of 100 (Notable)
Medicine Lake 3 SE	United States	Record snow depth	38.1 cm (15.0 in)	46 of 100 (Notable)
Riverside 7 SSW	United States	Record daily snowfall	7.6 cm (3.0 in)	44 of 100 (Notable)
Princesa Isabel	Brazil	Record daily precipitation	119.5 mm (4.7 in)	43 of 100 (Notable)
Langhult	Sweden	Record daily precipitation	30.2 mm (1.2 in)	43 of 100 (Notable)
Dunkirk 19NNE	United States	Record snow depth	15.2 cm (6.0 in)	43 of 100 (Notable)
Lehman Caves Nm	United States	Record daily precipitation	25.1 mm (1.0 in)	43 of 100 (Notable)
Wickiup Dam	United States	Record daily snowfall	20.3 cm (8.0 in)	43 of 100 (Notable)
Mazama 6 SE	United States	Record daily precipitation	29.7 mm (1.2 in)	43 of 100 (Notable)
Butler	United States	Record daily precipitation	83.3 mm (3.3 in)	42 of 100 (Notable)
Langley AFB	United States	Record daily precipitation	78.0 mm (3.1 in)	41 of 100 (Notable)
Kershaw 1SW	United States	Record daily precipitation	56.9 mm (2.2 in)	40 of 100 (Notable)
Elizabeth City	United States	Record daily precipitation	40.4 mm (1.6 in)	39 of 100 (Notable)
Nova Fatima	Brazil	Record daily precipitation	56.4 mm (2.2 in)	38 of 100 (Notable)
Goldbutte 7 N	United States	Record snow depth	25.4 cm (10.0 in)	38 of 100 (Notable)
Ovando	United States	Record snow depth	30.5 cm (12.0 in)	38 of 100 (Notable)
Denton 2 E	United States	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Danner	United States	Record daily snowfall	10.2 cm (4.0 in)	37 of 100 (Notable)
Cheraw	United States	Record daily precipitation	51.1 mm (2.0 in)	37 of 100 (Notable)
Newport	United States	Record snow depth	17.8 cm (7.0 in)	37 of 100 (Notable)
Parapua	Brazil	Record daily precipitation	40.5 mm (1.6 in)	36 of 100 (Notable)
Parateca	Brazil	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Witbankfontein	South Africa	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
Pine Level 4 ESE	United States	Record daily precipitation	70.9 mm (2.8 in)	35 of 100 (Notable)
Holly	United States	Record low minimum temperature	-8.3 C (17.1 F)	35 of 100 (Notable)
Priest Rvr Exp STN	United States	Record snow depth	15.2 cm (6.0 in)	35 of 100 (Notable)
Yale 1 NNW	United States	Record snow depth	12.7 cm (5.0 in)	35 of 100 (Notable)
Butte Falls 1 SE	United States	Record daily snowfall	14.5 cm (5.7 in)	35 of 100 (Notable)
Holland 1 E	United States	Record daily precipitation	36.6 mm (1.4 in)	35 of 100 (Notable)
Hopewell	United States	Record daily precipitation	44.5 mm (1.8 in)	35 of 100 (Notable)
Newport News Press Bld	United States	Record daily precipitation	57.2 mm (2.3 in)	35 of 100 (Notable)
Mulbring (Vincent Street)	Australia	Record daily precipitation	50.3 mm (2.0 in)	34 of 100 (Routine)
Doctortown 1 WSW	United States	Record daily precipitation	86.4 mm (3.4 in)	34 of 100 (Routine)
Clemson UNIV	United States	Record low maximum temperature	10.6 C (51.1 F)	34 of 100 (Routine)
Marilia	Brazil	Record daily precipitation	48.1 mm (1.9 in)	33 of 100 (Routine)
Usina Laranja Doce	Brazil	Record daily precipitation	44.5 mm (1.8 in)	33 of 100 (Routine)
Fladungen-Heufurt	Germany	Record daily precipitation	28.7 mm (1.1 in)	33 of 100 (Routine)
Westby	United States	Record snow depth	27.9 cm (11.0 in)	33 of 100 (Routine)
Austin #2	United States	Record daily snowfall	22.4 cm (8.8 in)	33 of 100 (Routine)
Sunnyside	United States	Record low maximum temperature	8.3 C (46.9 F)	33 of 100 (Routine)
The Oaks	Australia	Record daily precipitation	29.0 mm (1.1 in)	32 of 100 (Routine)
Williams	Australia	Record daily precipitation	28.2 mm (1.1 in)	32 of 100 (Routine)
Wetumpka	United States	Record daily precipitation	51.1 mm (2.0 in)	32 of 100 (Routine)
Santa Cruz	United States	Record low maximum temperature	13.3 C (55.9 F)	32 of 100 (Routine)
Milledgeville	United States	Record low maximum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Tiger Creek Ph	United States	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Abbeville 4S	United States	Record daily precipitation	66.0 mm (2.6 in)	31 of 100 (Routine)
Albany 3 SE	United States	Record daily precipitation	51.6 mm (2.0 in)	31 of 100 (Routine)
Lumber City	United States	Record daily precipitation	63.5 mm (2.5 in)	31 of 100 (Routine)
Blackwater Refuge	United States	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)

Counts by Type and Timescale

780 records

Records set or tied on 15 April 1975 by type: Highest daily maximum 32, Lowest daily maximum 106, Highest daily minimum 76, Lowest daily minimum 64, Heaviest daily rainfall 422, Heaviest daily snowfall 38, Deepest snow cover 42.

Records on 15 April 1975 by type
Record type	Records
Highest daily maximum	32
Lowest daily maximum	106
Highest daily minimum	76
Lowest daily minimum	64
Heaviest daily rainfall	422
Heaviest daily snowfall	38
Deepest snow cover	42

Records on 15 April 1975 by timescale: all-time 0, monthly 13, daily 767.

How Much Records Were Beaten By

673 broken records

Margins by which the 673 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

15 April 1975

Top 20 records on 15 April 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 April 1975	Riverside 7 SSW, US	daily rain	27.2 mm (1.1 in)	17.0 mm (0.7 in)	49 years	56 of 100 (Notable)
15 April 1975	Denton, US	daily snow depth	30.5 cm (12.0 in)	30.5 cm (12.0 in)	66 years	54 of 100 (Notable)
15 April 1975	Highland Home, US	daily rain	83.8 mm (3.3 in)	52.0 mm (2.0 in)	66 years	53 of 100 (Notable)
15 April 1975	Dickinson Exp STN, US	daily snow depth	38.1 cm (15.0 in)	25.4 cm (10.0 in)	28 years	53 of 100 (Notable)
15 April 1975	Diamond Springs, US	daily rain	59.9 mm (2.4 in)	38.6 mm (1.5 in)	26 years	52 of 100 (Notable)
15 April 1975	Eureka, US	daily snow depth	33.0 cm (13.0 in)	27.9 cm (11.0 in)	6 years	51 of 100 (Notable)
15 April 1975	Grundsjon, SE	daily rain	25.6 mm (1.0 in)	20.6 mm (0.8 in)	17 years	48 of 100 (Notable)
15 April 1975	Edenton, US	daily rain	59.7 mm (2.4 in)	24.1 mm (0.9 in)	69 years	47 of 100 (Notable)
15 April 1975	Wickiup Dam, US	daily snow depth	35.6 cm (14.0 in)	35.6 cm (14.0 in)	32 years	47 of 100 (Notable)
15 April 1975	Derby, ZA	daily rain	38.0 mm (1.5 in)	26.3 mm (1.0 in)	62 years	46 of 100 (Notable)
15 April 1975	Hammenhog, SE	daily rain	25.3 mm (1.0 in)	20.7 mm (0.8 in)	12 years	46 of 100 (Notable)
15 April 1975	Medicine Lake 3 SE, US	daily snow depth	38.1 cm (15.0 in)	20.3 cm (8.0 in)	4 years	46 of 100 (Notable)
15 April 1975	Riverside 7 SSW, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	74 years	44 of 100 (Notable)
15 April 1975	Princesa Isabel, BR	daily rain	119.5 mm (4.7 in)	67.5 mm (2.7 in)	1 year	43 of 100 (Notable)
15 April 1975	Langhult, SE	daily rain	30.2 mm (1.2 in)	19.9 mm (0.8 in)	12 years	43 of 100 (Notable)
15 April 1975	Dunkirk 19NNE, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	52 years	43 of 100 (Notable)
15 April 1975	Lehman Caves Nm, US	daily rain	25.1 mm (1.0 in)	23.1 mm (0.9 in)	34 years	43 of 100 (Notable)
15 April 1975	Wickiup Dam, US	daily snowfall	20.3 cm (8.0 in)	13.9 cm (5.5 in)	32 years	43 of 100 (Notable)
15 April 1975	Mazama 6 SE, US	monthly rain	29.7 mm (1.2 in)	9.1 mm (0.36 in)	34 years	43 of 100 (Notable)
15 April 1975	Butler, US	daily rain	83.3 mm (3.3 in)	28.7 mm (1.1 in)	66 years	42 of 100 (Notable)

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

1801 to 1975

Records set or tied on this calendar date in each year from 1801 to 1975. 1975 had 780 records.

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

Records on 04-15 in each year
Year	Records
1801	1
1817	1
1820	1
1844	1
1845	1
1847	1
1849	1
1853	2
1855	2
1858	1
1862	3
1865	3
1866	1
1868	1
1869	2
1873	1
1874	1
1876	1
1880	1
1882	1
1885	3
1886	1
1887	3
1889	2
1890	3
1891	2
1892	8
1893	2
1894	1
1896	2
1897	1
1898	2
1899	4
1900	9
1901	2
1902	4
1903	8
1904	39
1905	11
1906	20
1907	18
1908	15
1909	18
1910	16
1911	20
1912	24
1913	39
1914	17
1915	13
1916	15
1917	35
1918	40
1919	22
1920	50
1921	59
1922	94
1923	178
1924	172
1925	168
1926	453
1927	321
1928	631
1929	91
1930	289
1931	388
1932	150
1933	300
1934	339
1935	515
1936	439
1937	277
1938	596
1939	789
1940	581
1941	628
1942	525
1943	1,037
1944	313
1945	783
1946	245
1947	532
1948	306
1949	419
1950	568
1951	504
1952	357
1953	475
1954	896
1955	484
1956	750
1957	378
1958	458
1959	314
1960	319
1961	877
1962	733
1963	714
1964	382
1965	504
1966	464
1967	599
1968	476
1969	555
1970	841
1971	640
1972	896
1973	667
1974	385
1975	780
1976	1,566
1977	649
1978	426
1979	370
1980	1,066
1981	724
1982	955
1983	1,343
1984	612
1985	788
1986	1,140
1987	579
1988	839
1989	836
1990	837
1991	769
1992	783
1993	1,156
1994	835
1995	805
1996	1,173
1997	1,031
1998	1,752
1999	1,249
2000	1,163
2001	1,043
2002	1,866
2003	1,760
2004	761
2005	583
2006	1,637
2007	1,776
2008	1,157
2009	853
2010	804
2011	1,162
2012	1,007
2013	1,146
2014	1,721
2015	739
2016	602
2017	474
2018	1,913
2019	610
2020	1,068
2021	494
2022	1,145
2023	912
2024	1,096
2025	860
2026	1,118

Download the Data

Data for records on 1975-04-15: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	628
50 to 100	20
100 to 150	6
150 to 200	10
200 to 250	3
250 to 300	2
300 to 350	3
350 to 400	1