Weather Records on 4 April 1971

560 weather records were set or tied worldwide on 4 April 1971. Highest significance: Humansdorp (Pol), ZA.

Key Facts for 4 April 1971

On 4 April 1971, 560 weather records were set or tied at long-record stations worldwide.
59 were record highs and 165 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 25 monthly and 535 daily.
Humansdorp (Pol) set a daily record precipitation of 100.0 mm (3.9 in) on 4 April 1971.
Across 155 earlier years (1794 to 2026) the same calendar date averaged 504 records.

Record Map

560 stations

560 station records on 4 April 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 April 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Humansdorp (Pol)	South Africa	Record daily precipitation	100.0 mm (3.9 in)	64 of 100 (Major)
Swellendam (Bos)	South Africa	Record daily precipitation	122.5 mm (4.8 in)	62 of 100 (Major)
Lowville	United States	Record snow depth	43.2 cm (17.0 in)	61 of 100 (Major)
Dassieshoek	South Africa	Record daily precipitation	85.5 mm (3.4 in)	60 of 100 (Major)
Riversdale	South Africa	Record daily precipitation	55.0 mm (2.2 in)	59 of 100 (Notable)
Tierra Blanca (Smn)	Mexico	Record daily precipitation	69.9 mm (2.8 in)	58 of 100 (Notable)
Verwoedburg-Mu"Lytteltn"	South Africa	Record daily precipitation	36.5 mm (1.4 in)	57 of 100 (Notable)
Zuur Anys	South Africa	Record daily precipitation	104.4 mm (4.1 in)	55 of 100 (Notable)
Protem	South Africa	Record daily precipitation	49.5 mm (1.9 in)	52 of 100 (Notable)
Tanhurst Est, Umzint	South Africa	Record daily precipitation	76.5 mm (3.0 in)	50 of 100 (Notable)
Woodville (Bos)	South Africa	Record daily precipitation	69.0 mm (2.7 in)	49 of 100 (Notable)
Witelsbos (Bos)	South Africa	Record daily precipitation	101.0 mm (4.0 in)	49 of 100 (Notable)
Blackdown	South Africa	Record daily precipitation	44.5 mm (1.8 in)	47 of 100 (Notable)
Nylsvley	South Africa	Record daily precipitation	53.0 mm (2.1 in)	47 of 100 (Notable)
Cape St. Francis	South Africa	Record daily precipitation	40.0 mm (1.6 in)	46 of 100 (Notable)
Kameeldrift-Irr	South Africa	Record daily precipitation	67.0 mm (2.6 in)	46 of 100 (Notable)
De Hoop	South Africa	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
Cramond, Albert Fall	South Africa	Record daily precipitation	46.2 mm (1.8 in)	44 of 100 (Notable)
Oceanside Marina	United States	Record high maximum temperature	28.9 C (84.0 F)	44 of 100 (Notable)
Bonrook	Australia	Record daily precipitation	52.1 mm (2.1 in)	42 of 100 (Notable)
Millwood (Bos)	South Africa	Record daily precipitation	74.0 mm (2.9 in)	42 of 100 (Notable)
Grootvlei (Pol)	South Africa	Record daily precipitation	32.5 mm (1.3 in)	42 of 100 (Notable)
Willeroo	Australia	Record daily precipitation	57.7 mm (2.3 in)	41 of 100 (Notable)
Maclear (Mag)	South Africa	Record daily precipitation	45.5 mm (1.8 in)	41 of 100 (Notable)
Seymour (Mag)	South Africa	Record daily precipitation	47.0 mm (1.9 in)	40 of 100 (Notable)
Klipkop-Irr	South Africa	Record daily precipitation	46.0 mm (1.8 in)	40 of 100 (Notable)
Newcastle Waters	Australia	Record daily precipitation	66.0 mm (2.6 in)	39 of 100 (Notable)
Fort Cunynghame (Bos)	South Africa	Record daily precipitation	29.5 mm (1.2 in)	39 of 100 (Notable)
Maraisburg (Gm)	South Africa	Record daily precipitation	69.5 mm (2.7 in)	39 of 100 (Notable)
Canton 4 SE	United States	Record snow depth	43.2 cm (17.0 in)	39 of 100 (Notable)
Burrundie Railway Station	Australia	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Curralinho	Brazil	Record daily precipitation	55.5 mm (2.2 in)	38 of 100 (Notable)
Cape St James	Canada	Record daily precipitation	35.8 mm (1.4 in)	38 of 100 (Notable)
Elderslie, Tweedie	South Africa	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Doornkuil	South Africa	Record daily precipitation	71.5 mm (2.8 in)	38 of 100 (Notable)
Harrison 1 NNW	United States	Record snow depth	27.9 cm (11.0 in)	38 of 100 (Notable)
Pine Creek	Australia	Record daily precipitation	54.9 mm (2.2 in)	37 of 100 (Notable)
Exwell Park	South Africa	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Vlaklaagte	South Africa	Record daily precipitation	45.0 mm (1.8 in)	37 of 100 (Notable)
Chasm Falls	United States	Record snow depth	86.4 cm (34.0 in)	37 of 100 (Notable)
Mnt Fletcher (Tnk)	South Africa	Record daily precipitation	30.0 mm (1.2 in)	36 of 100 (Notable)
Sub-Nigel (Gm)	South Africa	Record daily precipitation	65.0 mm (2.6 in)	36 of 100 (Notable)
The Downs	South Africa	Record daily precipitation	45.0 mm (1.8 in)	36 of 100 (Notable)
Almaty	Kazakhstan	Record daily precipitation	33.1 mm (1.3 in)	35 of 100 (Notable)
Bizana (Bos)	South Africa	Record daily precipitation	25.0 mm (1.0 in)	35 of 100 (Notable)
Koster (Pol)	South Africa	Record daily precipitation	60.0 mm (2.4 in)	35 of 100 (Notable)
Pretoria-Fountains	South Africa	Record daily precipitation	41.0 mm (1.6 in)	35 of 100 (Notable)
St Marks 5 SSE	United States	Record low maximum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Sarita 7 E	United States	Record daily precipitation	38.1 mm (1.5 in)	35 of 100 (Notable)
Brownsville	United States	Record daily precipitation	39.1 mm (1.5 in)	35 of 100 (Notable)
Morgenrood	South Africa	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)
Kafferskraal	South Africa	Record daily precipitation	43.0 mm (1.7 in)	34 of 100 (Routine)
Hughenden	South Africa	Record daily precipitation	42.0 mm (1.7 in)	33 of 100 (Routine)
Winthrop 1 WSW	United States	Record snow depth	50.8 cm (20.0 in)	33 of 100 (Routine)
Summit WSO AP	United States	Record daily snowfall	5.8 cm (2.3 in)	33 of 100 (Routine)
Mount Barker	Australia	Record high minimum temperature	21.7 C (71.1 F)	32 of 100 (Routine)
Manati 2 E	Puerto Rico [United States]	Record low maximum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Manina (Bos)	South Africa	Record daily precipitation	41.9 mm (1.6 in)	32 of 100 (Routine)
Bergplaats	South Africa	Record daily precipitation	45.5 mm (1.8 in)	32 of 100 (Routine)
Utuado	Puerto Rico [United States]	Record low maximum temperature	23.9 C (75.0 F)	31 of 100 (Routine)

Counts by Type and Timescale

560 records

Records set or tied on 4 April 1971 by type: Highest daily maximum 27, Lowest daily maximum 45, Highest daily minimum 32, Lowest daily minimum 120, Heaviest daily rainfall 299, Heaviest daily snowfall 15, Deepest snow cover 22.

Records on 4 April 1971 by type
Record type	Records
Highest daily maximum	27
Lowest daily maximum	45
Highest daily minimum	32
Lowest daily minimum	120
Heaviest daily rainfall	299
Heaviest daily snowfall	15
Deepest snow cover	22

Records on 4 April 1971 by timescale: all-time 0, monthly 25, daily 535.

How Much Records Were Beaten By

480 broken records

Margins by which the 480 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 331.0. Ties are not counted.

Top 20 by Significance

4 April 1971

Top 20 records on 4 April 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 April 1971	Humansdorp (Pol), ZA	daily rain	100.0 mm (3.9 in)	77.1 mm (3.0 in)	52 years	64 of 100 (Major)
4 April 1971	Swellendam (Bos), ZA	monthly rain	122.5 mm (4.8 in)	59.0 mm (2.3 in)	29 years	62 of 100 (Major)
4 April 1971	Lowville, US	daily snow depth	43.2 cm (17.0 in)	28.0 cm (11.0 in)	46 years	61 of 100 (Major)
4 April 1971	Dassieshoek, ZA	monthly rain	85.5 mm (3.4 in)	41.3 mm (1.6 in)	21 years	60 of 100 (Major)
4 April 1971	Riversdale, ZA	daily rain	55.0 mm (2.2 in)	38.2 mm (1.5 in)	49 years	59 of 100 (Notable)
4 April 1971	Tierra Blanca (Smn), MX	daily rain	69.9 mm (2.8 in)	58.7 mm (2.3 in)	45 years	58 of 100 (Notable)
4 April 1971	Verwoedburg-Mu"Lytteltn", ZA	daily rain	36.5 mm (1.4 in)	29.6 mm (1.2 in)	44 years	57 of 100 (Notable)
4 April 1971	Zuur Anys, ZA	monthly rain	104.4 mm (4.1 in)	51.9 mm (2.0 in)	3 years	55 of 100 (Notable)
4 April 1971	Protem, ZA	daily rain	49.5 mm (1.9 in)	39.3 mm (1.5 in)	29 years	52 of 100 (Notable)
4 April 1971	Tanhurst Est, Umzint, ZA	daily rain	76.5 mm (3.0 in)	50.8 mm (2.0 in)	20 years	50 of 100 (Notable)
4 April 1971	Woodville (Bos), ZA	daily rain	69.0 mm (2.7 in)	61.0 mm (2.4 in)	13 years	49 of 100 (Notable)
4 April 1971	Witelsbos (Bos), ZA	daily rain	101.0 mm (4.0 in)	48.9 mm (1.9 in)	29 years	49 of 100 (Notable)
4 April 1971	Blackdown, ZA	daily rain	44.5 mm (1.8 in)	40.0 mm (1.6 in)	9 years	47 of 100 (Notable)
4 April 1971	Nylsvley, ZA	daily rain	53.0 mm (2.1 in)	33.9 mm (1.3 in)	40 years	47 of 100 (Notable)
4 April 1971	Cape St. Francis, ZA	daily rain	40.0 mm (1.6 in)	26.0 mm (1.0 in)	29 years	46 of 100 (Notable)
4 April 1971	Kameeldrift-Irr, ZA	daily rain	67.0 mm (2.6 in)	53.0 mm (2.1 in)	8 years	46 of 100 (Notable)
4 April 1971	De Hoop, ZA	daily rain	31.5 mm (1.2 in)	25.4 mm (1.0 in)	18 years	45 of 100 (Notable)
4 April 1971	Cramond, Albert Fall, ZA	daily rain	46.2 mm (1.8 in)	25.9 mm (1.0 in)	40 years	44 of 100 (Notable)
4 April 1971	Oceanside Marina, US	daily high max	28.9 C (84.0 F)	5.6 C (10.1 F)	53 years	44 of 100 (Notable)
4 April 1971	Bonrook, AU	daily rain	52.1 mm (2.1 in)	33.3 mm (1.3 in)	60 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

1794 to 1971

Records set or tied on this calendar date in each year from 1794 to 1971. 1971 had 560 records.

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

Records on 04-04 in each year
Year	Records
1794	1
1808	1
1809	1
1815	2
1819	1
1853	1
1857	1
1873	1
1874	2
1877	2
1878	1
1879	3
1880	2
1881	3
1882	1
1883	1
1884	1
1885	1
1886	2
1887	1
1888	1
1891	1
1892	6
1893	2
1895	2
1896	3
1897	4
1898	7
1899	4
1900	7
1901	12
1902	2
1903	17
1904	6
1905	23
1906	7
1907	9
1908	20
1909	15
1910	48
1911	55
1912	25
1913	31
1914	13
1915	52
1916	65
1917	36
1918	37
1919	27
1920	89
1921	205
1922	39
1923	101
1924	51
1925	126
1926	206
1927	203
1928	625
1929	1,320
1930	86
1931	201
1932	193
1933	167
1934	656
1935	402
1936	714
1937	344
1938	201
1939	243
1940	392
1941	353
1942	537
1943	456
1944	975
1945	806
1946	459
1947	397
1948	202
1949	458
1950	1,044
1951	352
1952	348
1953	332
1954	742
1955	448
1956	426
1957	984
1958	492
1959	524
1960	756
1961	525
1962	308
1963	586
1964	675
1965	443
1966	469
1967	438
1968	640
1969	424
1970	438
1971	560
1972	695
1973	511
1974	1,356
1975	1,981
1976	353
1977	780
1978	497
1979	984
1980	690
1981	1,393
1982	1,251
1983	1,202
1984	762
1985	865
1986	810
1987	2,317
1988	1,119
1989	668
1990	826
1991	957
1992	1,270
1993	733
1994	726
1995	935
1996	699
1997	1,538
1998	931
1999	1,575
2000	1,371
2001	1,040
2002	989
2003	1,055
2004	782
2005	1,070
2006	911
2007	1,009
2008	860
2009	1,068
2010	758
2011	1,155
2012	830
2013	938
2014	705
2015	452
2016	795
2017	603
2018	1,196
2019	407
2020	914
2021	1,341
2022	1,014
2023	2,058
2024	966
2025	1,330
2026	894

Download the Data

Data for records on 1971-04-04: 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	455
50 to 100	16
100 to 150	2
150 to 200	2
200 to 250	3
250 to 300	1
300 to 350	1