Weather Records on 9 April 1971

576 weather records were set or tied worldwide on 9 April 1971. Highest significance: Bandon 2 NNE, US.

Key Facts for 9 April 1971

On 9 April 1971, 576 weather records were set or tied at long-record stations worldwide.
73 were record highs and 271 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 15 monthly and 561 daily.
Bandon 2 NNE set a monthly record daily precipitation of 83.8 mm (3.3 in) on 9 April 1971.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

576 stations

576 station records on 9 April 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 April 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bandon 2 NNE	United States	Record daily precipitation	83.8 mm (3.3 in)	65 of 100 (Major)
Corvallis State UNIV	United States	Record daily precipitation	46.5 mm (1.8 in)	64 of 100 (Major)
N Bend SW Oregon Rgnl AP	United States	Record daily precipitation	67.3 mm (2.6 in)	64 of 100 (Major)
Lowville	United States	Record snow depth	35.6 cm (14.0 in)	62 of 100 (Major)
Summit	United States	Record daily precipitation	52.8 mm (2.1 in)	60 of 100 (Major)
Reedsport	United States	Record daily precipitation	94.0 mm (3.7 in)	55 of 100 (Notable)
Hillsboro	United States	Record daily precipitation	33.5 mm (1.3 in)	54 of 100 (Notable)
Vancouver 4 NNE	United States	Record daily precipitation	31.0 mm (1.2 in)	54 of 100 (Notable)
Molalla	United States	Record daily precipitation	46.0 mm (1.8 in)	53 of 100 (Notable)
Horto Florestal	Brazil	Record daily precipitation	85.2 mm (3.4 in)	52 of 100 (Notable)
Corvallis	United States	Record daily precipitation	42.4 mm (1.7 in)	50 of 100 (Notable)
Waterloo	United States	Record daily precipitation	36.1 mm (1.4 in)	50 of 100 (Notable)
Corvallis Water Bureau	United States	Record daily precipitation	63.2 mm (2.5 in)	49 of 100 (Notable)
Willamina	United States	Record daily precipitation	47.8 mm (1.9 in)	49 of 100 (Notable)
Battle Ground	United States	Record daily precipitation	35.3 mm (1.4 in)	48 of 100 (Notable)
Pindobacu	Brazil	Record daily precipitation	72.2 mm (2.8 in)	46 of 100 (Notable)
Cherry Grove 2 S	United States	Record daily precipitation	33.5 mm (1.3 in)	46 of 100 (Notable)
Salem AP (McNary Field)	United States	Record daily precipitation	39.1 mm (1.5 in)	46 of 100 (Notable)
Newport	United States	Record daily precipitation	63.2 mm (2.5 in)	45 of 100 (Notable)
Haskins Dam	United States	Record daily precipitation	59.4 mm (2.3 in)	44 of 100 (Notable)
Oregon City	United States	Record daily precipitation	47.8 mm (1.9 in)	44 of 100 (Notable)
Aracatiacu	Brazil	Record daily precipitation	77.5 mm (3.1 in)	43 of 100 (Notable)
Ibiapina	Brazil	Record daily precipitation	112.1 mm (4.4 in)	42 of 100 (Notable)
Santa Maria Asuncion Tlaxiaco	Mexico	Record low minimum temperature	-3.3 C (26.1 F)	40 of 100 (Notable)
Mococa C4-018	Brazil	Record daily precipitation	57.8 mm (2.3 in)	39 of 100 (Notable)
Pocinhos (Joffily)	Brazil	Record daily precipitation	37.8 mm (1.5 in)	39 of 100 (Notable)
Karina	South Africa	Record daily precipitation	34.0 mm (1.3 in)	39 of 100 (Notable)
Silver Creek Falls	United States	Record daily precipitation	59.4 mm (2.3 in)	39 of 100 (Notable)
Portland Rfc City	United States	Record daily precipitation	35.1 mm (1.4 in)	39 of 100 (Notable)
Portland Intl AP	United States	Record daily precipitation	29.7 mm (1.2 in)	37 of 100 (Notable)
Vila Carmem	Brazil	Record daily precipitation	36.3 mm (1.4 in)	36 of 100 (Notable)
Detroit	United States	Record daily precipitation	30.0 mm (1.2 in)	36 of 100 (Notable)
St. Petersburg	Russia	Record high minimum temperature	4.7 C (40.5 F)	35 of 100 (Notable)
Stockport (Pol)	South Africa	Record daily precipitation	49.0 mm (1.9 in)	35 of 100 (Notable)
Tarpon Spgs Sewage Plt	United States	Record low minimum temperature	5.0 C (41.0 F)	35 of 100 (Notable)
Albany 3 SE	United States	Record low minimum temperature	0.6 C (33.1 F)	35 of 100 (Notable)
Ariel Dam	United States	Record daily precipitation	36.1 mm (1.4 in)	35 of 100 (Notable)
Carrabelle 1 NNW	United States	Record low minimum temperature	2.2 C (36.0 F)	34 of 100 (Routine)
De Funiak Springs 1 E	United States	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Bar Harbor 3 NW	United States	Record snow depth	20.3 cm (8.0 in)	34 of 100 (Routine)
Araraquara (US.Tamoio)	Brazil	Record daily precipitation	45.6 mm (1.8 in)	33 of 100 (Routine)
Chasm Falls	United States	Record snow depth	83.8 cm (33.0 in)	33 of 100 (Routine)
Paratinga	Brazil	Record daily precipitation	37.6 mm (1.5 in)	32 of 100 (Routine)
Fort McPherson	Canada	Record low minimum temperature	-37.8 C (-36.0 F)	32 of 100 (Routine)
Prospect 2 SW	United States	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Tanana AP	United States	Record low minimum temperature	-31.7 C (-25.1 F)	32 of 100 (Routine)
Mzimba	Malawi	Record daily precipitation	33.3 mm (1.3 in)	31 of 100 (Routine)
Villaflores (Smn)	Mexico	Record low minimum temperature	8.9 C (48.0 F)	31 of 100 (Routine)
Bonneville Dam	United States	Record daily precipitation	44.5 mm (1.8 in)	31 of 100 (Routine)
Forest Grove	United States	Record daily precipitation	32.8 mm (1.3 in)	31 of 100 (Routine)
Acude Sao Vicente	Brazil	Record daily precipitation	48.2 mm (1.9 in)	30 of 100 (Routine)
Canton 4 SE	United States	Record low minimum temperature	-7.2 C (19.0 F)	30 of 100 (Routine)
Rio Claro	Brazil	Record daily precipitation	30.8 mm (1.2 in)	29 of 100 (Routine)
Cedar Key 1 WSW	United States	Record low maximum temperature	17.2 C (63.0 F)	29 of 100 (Routine)
Douglas	United States	Record low minimum temperature	3.9 C (39.0 F)	29 of 100 (Routine)
Clinton Forestry HQ	United States	Record low minimum temperature	1.7 C (35.1 F)	29 of 100 (Routine)
Mc Minnville	United States	Record daily precipitation	41.1 mm (1.6 in)	29 of 100 (Routine)
Three Lynx	United States	Record daily precipitation	26.7 mm (1.1 in)	29 of 100 (Routine)
Northfield	United States	Record snow depth	38.1 cm (15.0 in)	29 of 100 (Routine)
Saint Johnsbury	United States	Record snow depth	15.2 cm (6.0 in)	29 of 100 (Routine)

Counts by Type and Timescale

576 records

Records set or tied on 9 April 1971 by type: Highest daily maximum 34, Lowest daily maximum 75, Highest daily minimum 39, Lowest daily minimum 196, Heaviest daily rainfall 204, Heaviest daily snowfall 10, Deepest snow cover 18.

Records on 9 April 1971 by type
Record type	Records
Highest daily maximum	34
Lowest daily maximum	75
Highest daily minimum	39
Lowest daily minimum	196
Heaviest daily rainfall	204
Heaviest daily snowfall	10
Deepest snow cover	18

Records on 9 April 1971 by timescale: all-time 0, monthly 15, daily 561.

How Much Records Were Beaten By

465 broken records

Margins by which the 465 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 533.0. Ties are not counted.

Top 20 by Significance

9 April 1971

Top 20 records on 9 April 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 April 1971	Bandon 2 NNE, US	monthly rain	83.8 mm (3.3 in)	24.4 mm (1.0 in)	58 years	65 of 100 (Major)
9 April 1971	Corvallis State UNIV, US	daily rain	46.5 mm (1.8 in)	27.7 mm (1.1 in)	56 years	64 of 100 (Major)
9 April 1971	N Bend SW Oregon Rgnl AP, US	daily rain	67.3 mm (2.6 in)	40.1 mm (1.6 in)	56 years	64 of 100 (Major)
9 April 1971	Lowville, US	daily snow depth	35.6 cm (14.0 in)	33.1 cm (13.0 in)	52 years	62 of 100 (Major)
9 April 1971	Summit, US	daily rain	52.8 mm (2.1 in)	28.7 mm (1.1 in)	56 years	60 of 100 (Major)
9 April 1971	Reedsport, US	monthly rain	94.0 mm (3.7 in)	48.0 mm (1.9 in)	8 years	55 of 100 (Notable)
9 April 1971	Hillsboro, US	daily rain	33.5 mm (1.3 in)	19.5 mm (0.8 in)	33 years	54 of 100 (Notable)
9 April 1971	Vancouver 4 NNE, US	daily rain	31.0 mm (1.2 in)	19.3 mm (0.8 in)	32 years	54 of 100 (Notable)
9 April 1971	Molalla, US	daily rain	46.0 mm (1.8 in)	32.0 mm (1.3 in)	33 years	53 of 100 (Notable)
9 April 1971	Horto Florestal, BR	monthly rain	85.2 mm (3.4 in)	37.2 mm (1.5 in)	13 years	52 of 100 (Notable)
9 April 1971	Corvallis, US	daily rain	42.4 mm (1.7 in)	34.0 mm (1.3 in)	24 years	50 of 100 (Notable)
9 April 1971	Waterloo, US	daily rain	36.1 mm (1.4 in)	21.9 mm (0.9 in)	30 years	50 of 100 (Notable)
9 April 1971	Corvallis Water Bureau, US	daily rain	63.2 mm (2.5 in)	47.5 mm (1.9 in)	22 years	49 of 100 (Notable)
9 April 1971	Willamina, US	daily rain	47.8 mm (1.9 in)	32.1 mm (1.3 in)	22 years	49 of 100 (Notable)
9 April 1971	Battle Ground, US	daily rain	35.3 mm (1.4 in)	19.8 mm (0.8 in)	40 years	48 of 100 (Notable)
9 April 1971	Pindobacu, BR	daily rain	72.2 mm (2.8 in)	46.7 mm (1.8 in)	22 years	46 of 100 (Notable)
9 April 1971	Cherry Grove 2 S, US	daily rain	33.5 mm (1.3 in)	23.3 mm (0.9 in)	24 years	46 of 100 (Notable)
9 April 1971	Salem AP (McNary Field), US	daily rain	39.1 mm (1.5 in)	20.6 mm (0.8 in)	0 years	46 of 100 (Notable)
9 April 1971	Newport, US	daily rain	63.2 mm (2.5 in)	32.0 mm (1.3 in)	0 years	45 of 100 (Notable)
9 April 1971	Haskins Dam, US	daily rain	59.4 mm (2.3 in)	43.9 mm (1.7 in)	0 years	44 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

1793 to 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 576 records.

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

Records on 04-09 in each year
Year	Records
1793	2
1798	1
1800	1
1805	1
1809	2
1812	2
1815	1
1818	1
1839	1
1842	2
1844	1
1846	1
1847	1
1849	1
1854	1
1856	1
1859	1
1862	1
1863	1
1864	1
1865	2
1866	2
1869	1
1871	2
1873	1
1877	1
1883	1
1884	1
1885	3
1886	1
1887	1
1888	3
1889	1
1890	7
1892	1
1893	1
1894	2
1895	4
1896	1
1897	3
1898	3
1899	9
1900	3
1901	8
1902	8
1903	12
1904	15
1905	21
1906	20
1907	21
1908	28
1909	25
1910	19
1911	21
1912	51
1913	16
1914	41
1915	89
1916	85
1917	105
1918	29
1919	67
1920	56
1921	114
1922	140
1923	79
1924	353
1925	129
1926	83
1927	260
1928	395
1929	402
1930	430
1931	193
1932	119
1933	320
1934	310
1935	398
1936	151
1937	172
1938	378
1939	282
1940	214
1941	297
1942	432
1943	752
1944	564
1945	1,055
1946	335
1947	174
1948	365
1949	179
1950	750
1951	304
1952	578
1953	638
1954	239
1955	484
1956	371
1957	502
1958	294
1959	634
1960	623
1961	879
1962	344
1963	390
1964	645
1965	651
1966	466
1967	743
1968	669
1969	898
1970	489
1971	576
1972	1,200
1973	1,695
1974	972
1975	968
1976	347
1977	1,693
1978	921
1979	855
1980	911
1981	785
1982	1,923
1983	1,170
1984	904
1985	1,424
1986	620
1987	604
1988	737
1989	1,402
1990	888
1991	1,545
1992	641
1993	687
1994	511
1995	1,296
1996	1,547
1997	2,686
1998	1,018
1999	1,848
2000	997
2001	1,947
2002	590
2003	1,781
2004	572
2005	998
2006	603
2007	1,412
2008	1,029
2009	802
2010	652
2011	1,480
2012	640
2013	1,245
2014	592
2015	664
2016	974
2017	759
2018	1,306
2019	716
2020	916
2021	642
2022	574
2023	512
2024	1,093
2025	530
2026	517

Download the Data

Data for records on 1971-04-09: 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 100	454
100 to 200	7
200 to 300	1
300 to 400	1
400 to 500	1
500 to 600	1