Weather Records on 15 April 1970

841 weather records were set or tied worldwide on 15 April 1970. Highest significance: Hammonton 1 NE, US.

Key Facts for 15 April 1970

On 15 April 1970, 841 weather records were set or tied at long-record stations worldwide.
66 were record highs and 340 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 18 monthly and 820 daily.
Hammonton 1 NE set a monthly record daily precipitation of 114.8 mm (4.5 in) on 15 April 1970.
Across 159 earlier years (1801 to 2026) the same calendar date averaged 491 records.

Record Map

841 stations

841 station records on 15 April 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 April 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hammonton 1 NE	United States	Record daily precipitation	114.8 mm (4.5 in)	78 of 100 (Major)
Schierke	Germany	Record snow depth	110.0 cm (43.3 in)	72 of 100 (Major)
Moorestown 4 E	United States	Record daily precipitation	63.0 mm (2.5 in)	69 of 100 (Major)
Kirov	Russia	Record daily precipitation	30.5 mm (1.2 in)	66 of 100 (Major)
Virden	Canada	Record daily snowfall	15.2 cm (6.0 in)	59 of 100 (Notable)
Medicine Lake 3 SE	United States	Record snow depth	17.8 cm (7.0 in)	59 of 100 (Notable)
Deloraine	Canada	Record daily snowfall	20.3 cm (8.0 in)	57 of 100 (Notable)
Marayur	India	Record daily precipitation	83.8 mm (3.3 in)	56 of 100 (Notable)
Tagus	United States	Record daily precipitation	34.3 mm (1.4 in)	56 of 100 (Notable)
Clausthal-Zellerfeld	Germany	Record snow depth	60.0 cm (23.6 in)	54 of 100 (Notable)
Forks 4 NNE	United States	Record daily precipitation	25.9 mm (1.0 in)	53 of 100 (Notable)
Sidney	United States	Record snow depth	22.9 cm (9.0 in)	53 of 100 (Notable)
Hopewell 1 SE	United States	Record daily snowfall	20.3 cm (8.0 in)	53 of 100 (Notable)
Lustre 4 NNW	United States	Record daily snowfall	17.8 cm (7.0 in)	52 of 100 (Notable)
Timber Lake	United States	Record daily snowfall	12.7 cm (5.0 in)	52 of 100 (Notable)
Yellow Grass	Canada	Record daily snowfall	15.2 cm (6.0 in)	51 of 100 (Notable)
Rolla 1NE	United States	Record daily snowfall	23.9 cm (9.4 in)	51 of 100 (Notable)
Altastenberg	Germany	Record snow depth	153.0 cm (60.2 in)	50 of 100 (Notable)
Morden Cda	Canada	Record daily snowfall	26.2 cm (10.3 in)	49 of 100 (Notable)
Hettinger	United States	Record snow depth	10.2 cm (4.0 in)	49 of 100 (Notable)
Rolla 1NE	United States	Record daily precipitation	35.1 mm (1.4 in)	49 of 100 (Notable)
Medicine Lake 3 SE	United States	Record daily snowfall	17.8 cm (7.0 in)	48 of 100 (Notable)
Velva	United States	Record daily snowfall	20.3 cm (8.0 in)	48 of 100 (Notable)
Braunlage	Germany	Record snow depth	90.0 cm (35.4 in)	47 of 100 (Notable)
Epping	United States	Record daily snowfall	10.2 cm (4.0 in)	47 of 100 (Notable)
Malta	United States	Record snow depth	15.2 cm (6.0 in)	46 of 100 (Notable)
Poplar 2 E	United States	Record daily snowfall	15.2 cm (6.0 in)	45 of 100 (Notable)
Foxholm 7 N	United States	Record daily snowfall	15.2 cm (6.0 in)	45 of 100 (Notable)
Minot Exp STN	United States	Record snow depth	22.9 cm (9.0 in)	45 of 100 (Notable)
Parshall	United States	Record daily snowfall	10.2 cm (4.0 in)	45 of 100 (Notable)
Fichtelberg	Germany	Record snow depth	290.0 cm (114.2 in)	44 of 100 (Notable)
Mott	United States	Record daily precipitation	27.9 mm (1.1 in)	44 of 100 (Notable)
Arendtsville	United States	Record daily precipitation	56.6 mm (2.2 in)	44 of 100 (Notable)
Lemmon	United States	Record daily snowfall	20.3 cm (8.0 in)	44 of 100 (Notable)
Assiniboia	Canada	Record daily snowfall	8.9 cm (3.5 in)	43 of 100 (Notable)
Mc Clusky	United States	Record daily snowfall	12.7 cm (5.0 in)	42 of 100 (Notable)
W Chester 2 NW	United States	Record daily precipitation	55.1 mm (2.2 in)	42 of 100 (Notable)
Williston Sloulin Fld	United States	Record daily snowfall	19.3 cm (7.6 in)	42 of 100 (Notable)
Forks 4 NNE	United States	Record daily snowfall	22.9 cm (9.0 in)	41 of 100 (Notable)
Goondi Mill Csr	Australia	Record daily precipitation	145.0 mm (5.7 in)	40 of 100 (Notable)
Hohenpeissenberg	Germany	Record snow depth	56.0 cm (22.0 in)	40 of 100 (Notable)
Edgemont	United States	Record daily precipitation	44.2 mm (1.7 in)	40 of 100 (Notable)
Bowman	United States	Record daily snowfall	12.7 cm (5.0 in)	40 of 100 (Notable)
Linton	United States	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Shippensburg	United States	Record daily precipitation	27.4 mm (1.1 in)	40 of 100 (Notable)
S Mtn	United States	Record daily precipitation	73.7 mm (2.9 in)	40 of 100 (Notable)
Saint John	Canada	Record low minimum temperature	-6.7 C (19.9 F)	39 of 100 (Notable)
Ceylon	Canada	Record daily snowfall	25.4 cm (10.0 in)	38 of 100 (Notable)
Graysville	Canada	Record daily snowfall	24.1 cm (9.5 in)	38 of 100 (Notable)
Westminster 2 SSE	United States	Record daily precipitation	46.7 mm (1.8 in)	38 of 100 (Notable)
Crosby	United States	Record daily snowfall	18.3 cm (7.2 in)	38 of 100 (Notable)
New Salem 5NW	United States	Record daily snowfall	10.2 cm (4.0 in)	38 of 100 (Notable)
Swift Current A	Canada	Record daily snowfall	9.4 cm (3.7 in)	37 of 100 (Notable)
Roy 8 NE	United States	Record daily snowfall	20.3 cm (8.0 in)	37 of 100 (Notable)
Westby	United States	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)
Westhope	United States	Record daily snowfall	7.6 cm (3.0 in)	37 of 100 (Notable)
Newport River	United States	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Spring Grove	United States	Record daily precipitation	49.3 mm (1.9 in)	37 of 100 (Notable)
Ceylon	Canada	Record daily precipitation	25.4 mm (1.0 in)	36 of 100 (Notable)
Asola	India	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)

Counts by Type and Timescale

841 records

Records set or tied on 15 April 1970 by type: Highest daily maximum 29, Lowest daily maximum 180, Highest daily minimum 37, Lowest daily minimum 160, Heaviest daily rainfall 285, Heaviest daily snowfall 99, Deepest snow cover 51.

Records on 15 April 1970 by type
Record type	Records
Highest daily maximum	29
Lowest daily maximum	180
Highest daily minimum	37
Lowest daily minimum	160
Heaviest daily rainfall	285
Heaviest daily snowfall	99
Deepest snow cover	51

Records on 15 April 1970 by timescale: all-time 3, monthly 18, daily 820.

How Much Records Were Beaten By

696 broken records

Margins by which the 696 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 1120.0. Ties are not counted.

Top 20 by Significance

15 April 1970

Top 20 records on 15 April 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 April 1970	Hammonton 1 NE, US	monthly rain	114.8 mm (4.5 in)	52.6 mm (2.1 in)	73 years	78 of 100 (Major)
15 April 1970	Schierke, DE	daily snow depth	110.0 cm (43.3 in)	62.0 cm (24.4 in)	81 years	72 of 100 (Major)
15 April 1970	Moorestown 4 E, US	daily rain	63.0 mm (2.5 in)	42.9 mm (1.7 in)	64 years	69 of 100 (Major)
15 April 1970	Kirov, RU	monthly rain	30.5 mm (1.2 in)	7.5 mm (0.30 in)	78 years	66 of 100 (Major)
15 April 1970	Virden, CA	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	78 years	59 of 100 (Notable)
15 April 1970	Medicine Lake 3 SE, US	daily snow depth	17.8 cm (7.0 in)	17.8 cm (7.0 in)	59 years	59 of 100 (Notable)
15 April 1970	Deloraine, CA	daily snowfall	20.3 cm (8.0 in)	13.9 cm (5.5 in)	68 years	57 of 100 (Notable)
15 April 1970	Marayur, IN	daily rain	83.8 mm (3.3 in)	63.5 mm (2.5 in)	39 years	56 of 100 (Notable)
15 April 1970	Tagus, US	daily rain	34.3 mm (1.4 in)	29.2 mm (1.1 in)	40 years	56 of 100 (Notable)
15 April 1970	Clausthal-Zellerfeld, DE	daily snow depth	60.0 cm (23.6 in)	32.0 cm (12.6 in)	78 years	54 of 100 (Notable)
15 April 1970	Forks 4 NNE, US	daily rain	25.9 mm (1.0 in)	18.8 mm (0.7 in)	40 years	53 of 100 (Notable)
15 April 1970	Sidney, US	monthly snow depth	22.9 cm (9.0 in)	7.7 cm (3.0 in)	59 years	53 of 100 (Notable)
15 April 1970	Hopewell 1 SE, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	60 years	53 of 100 (Notable)
15 April 1970	Lustre 4 NNW, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	47 years	52 of 100 (Notable)
15 April 1970	Timber Lake, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	57 years	52 of 100 (Notable)
15 April 1970	Yellow Grass, CA	daily snowfall	15.2 cm (6.0 in)	12.7 cm (5.0 in)	45 years	51 of 100 (Notable)
15 April 1970	Rolla 1NE, US	daily snowfall	23.9 cm (9.4 in)	23.1 cm (9.1 in)	16 years	51 of 100 (Notable)
15 April 1970	Altastenberg, DE	daily snow depth	153.0 cm (60.2 in)	112.0 cm (44.1 in)	8 years	50 of 100 (Notable)
15 April 1970	Morden Cda, CA	daily snowfall	26.2 cm (10.3 in)	22.4 cm (8.8 in)	21 years	49 of 100 (Notable)
15 April 1970	Hettinger, US	daily snow depth	10.2 cm (4.0 in)	7.7 cm (3.0 in)	41 years	49 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 1970

Records set or tied on this calendar date in each year from 1801 to 1970. 1970 had 841 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 1970-04-15: 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 200	683
200 to 400	8
400 to 600	1
600 to 800	1
800 to 1000	1
1000 to 1200	2