Weather Records on 9 April 1973

1,695 weather records were set or tied worldwide on 9 April 1973. Highest significance: Prairie du Chien, US.

Key Facts for 9 April 1973

On 9 April 1973, 1,695 weather records were set or tied at long-record stations worldwide.
59 were record highs and 941 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 146 monthly and 1,542 daily.
Prairie du Chien set a monthly record daily snowfall of 30.5 cm (12.0 in) on 9 April 1973.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 457 records.

Record Map

1,695 stations

1,695 station records on 9 April 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 April 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Prairie du Chien	United States	Record daily snowfall	30.5 cm (12.0 in)	76 of 100 (Major)
Forest City 2 NNE	United States	Record daily snowfall	25.4 cm (10.0 in)	71 of 100 (Major)
Knoxville	United States	Record daily snowfall	30.5 cm (12.0 in)	71 of 100 (Major)
Toledo 3N	United States	Record daily snowfall	20.3 cm (8.0 in)	71 of 100 (Major)
Prairie du Sac 2 N	United States	Record daily snowfall	29.5 cm (11.6 in)	71 of 100 (Major)
Grundy Ctr	United States	Record daily snowfall	20.3 cm (8.0 in)	69 of 100 (Major)
Sigourney	United States	Record daily snowfall	20.3 cm (8.0 in)	69 of 100 (Major)
Audubon	United States	Record daily snowfall	15.2 cm (6.0 in)	68 of 100 (Major)
Plymouth Wwtp	United States	Record daily snowfall	35.6 cm (14.0 in)	68 of 100 (Major)
Richland Ctr	United States	Record daily snowfall	30.5 cm (12.0 in)	68 of 100 (Major)
West Bend	United States	Record daily snowfall	33.0 cm (13.0 in)	68 of 100 (Major)
Wisconsin Dells Wwtp	United States	Record daily snowfall	30.5 cm (12.0 in)	68 of 100 (Major)
Cedar Rapids #1	United States	Record snow depth	33.0 cm (13.0 in)	67 of 100 (Major)
Indianola 1SW	United States	Record snow depth	35.6 cm (14.0 in)	66 of 100 (Major)
Ashfield Bowling Club	Australia	Record daily precipitation	83.8 mm (3.3 in)	64 of 100 (Major)
Dumont	United States	Record daily snowfall	33.0 cm (13.0 in)	64 of 100 (Major)
Port Washington	United States	Record daily snowfall	23.4 cm (9.2 in)	64 of 100 (Major)
Cedar Rapids #1	United States	Record daily snowfall	25.4 cm (10.0 in)	62 of 100 (Major)
Pella 1S	United States	Record daily snowfall	20.3 cm (8.0 in)	61 of 100 (Major)
Williamsburg 1E	United States	Record daily snowfall	15.2 cm (6.0 in)	61 of 100 (Major)
Decorah	United States	Record daily snowfall	26.7 cm (10.5 in)	60 of 100 (Major)
Humboldt 3 W	United States	Record daily snowfall	15.2 cm (6.0 in)	60 of 100 (Major)
Maquoketa	United States	Record snow depth	30.5 cm (12.0 in)	59 of 100 (Notable)
Muscoda	United States	Record daily snowfall	20.3 cm (8.0 in)	59 of 100 (Notable)
Muskegon Co AP	United States	Record daily snowfall	16.5 cm (6.5 in)	59 of 100 (Notable)
Busselton Shire	Australia	Record daily precipitation	52.3 mm (2.1 in)	58 of 100 (Notable)
Delaware 3 WSW	United States	Record daily snowfall	28.7 cm (11.3 in)	58 of 100 (Notable)
Greenfield	United States	Record daily snowfall	15.2 cm (6.0 in)	58 of 100 (Notable)
Iowa Falls	United States	Record daily snowfall	15.2 cm (6.0 in)	57 of 100 (Notable)
New Hampton	United States	Record daily snowfall	25.4 cm (10.0 in)	57 of 100 (Notable)
Cimarron 4 SW	United States	Record snow depth	30.5 cm (12.0 in)	57 of 100 (Notable)
Waukesha Wwtp	United States	Record daily precipitation	35.6 mm (1.4 in)	57 of 100 (Notable)
Nannup	Australia	Record daily precipitation	58.9 mm (2.3 in)	56 of 100 (Notable)
Grinnell 3 SW	United States	Record daily snowfall	12.7 cm (5.0 in)	56 of 100 (Notable)
Beloit	United States	Record daily precipitation	59.7 mm (2.4 in)	56 of 100 (Notable)
Chillicothe Radio Kchi	United States	Record daily snowfall	17.5 cm (6.9 in)	56 of 100 (Notable)
Milwaukee Mitchell AP	United States	Record daily snowfall	29.5 cm (11.6 in)	56 of 100 (Notable)
Cromer Golf Club	Australia	Record daily precipitation	103.6 mm (4.1 in)	55 of 100 (Notable)
Jervis Bay (Point Perpendicula	Australia	Record daily precipitation	206.2 mm (8.1 in)	55 of 100 (Notable)
Five Dock (Barnwell Park Golf	Australia	Record daily precipitation	196.9 mm (7.8 in)	54 of 100 (Notable)
Hampton	United States	Record daily snowfall	26.7 cm (10.5 in)	54 of 100 (Notable)
New Hampton	United States	Record snow depth	25.4 cm (10.0 in)	54 of 100 (Notable)
Hastings	United States	Record daily snowfall	9.4 cm (3.7 in)	54 of 100 (Notable)
Reedsburg Wwtp	United States	Record daily precipitation	35.3 mm (1.4 in)	54 of 100 (Notable)
Iowa City	United States	Record daily snowfall	25.4 cm (10.0 in)	53 of 100 (Notable)
Lansing	United States	Record daily snowfall	20.3 cm (8.0 in)	53 of 100 (Notable)
Portage Wwtp	United States	Record daily snowfall	12.7 cm (5.0 in)	53 of 100 (Notable)
Itamarati-SE	Brazil	Record daily precipitation	64.4 mm (2.5 in)	52 of 100 (Notable)
Belle Plaine	United States	Record daily snowfall	35.6 cm (14.0 in)	52 of 100 (Notable)
Iowa City	United States	Record snow depth	12.7 cm (5.0 in)	52 of 100 (Notable)
Freeport	United States	Record daily snowfall	22.9 cm (9.0 in)	51 of 100 (Notable)
Britt 3E	United States	Record daily snowfall	15.2 cm (6.0 in)	51 of 100 (Notable)
Vinton	United States	Record daily snowfall	20.3 cm (8.0 in)	51 of 100 (Notable)
Alton	United States	Record snow depth	61.0 cm (24.0 in)	51 of 100 (Notable)
Mondovi	United States	Record daily snowfall	20.3 cm (8.0 in)	51 of 100 (Notable)
Newport Bowling Club	Australia	Record daily precipitation	92.7 mm (3.6 in)	50 of 100 (Notable)
Allison	United States	Record daily snowfall	35.6 cm (14.0 in)	50 of 100 (Notable)
Fayette	United States	Record daily snowfall	15.2 cm (6.0 in)	50 of 100 (Notable)
Maquoketa	United States	Record daily snowfall	32.0 cm (12.6 in)	50 of 100 (Notable)
Oskaloosa	United States	Record daily snowfall	7.6 cm (3.0 in)	50 of 100 (Notable)

Counts by Type and Timescale

1,695 records

Records set or tied on 9 April 1973 by type: Highest daily maximum 22, Lowest daily maximum 539, Highest daily minimum 37, Lowest daily minimum 402, Heaviest daily rainfall 346, Heaviest daily snowfall 263, Deepest snow cover 86.

Records on 9 April 1973 by type
Record type	Records
Highest daily maximum	22
Lowest daily maximum	539
Highest daily minimum	37
Lowest daily minimum	402
Heaviest daily rainfall	346
Heaviest daily snowfall	263
Deepest snow cover	86

Records on 9 April 1973 by timescale: all-time 7, monthly 146, daily 1,542.

How Much Records Were Beaten By

1,441 broken records

Margins by which the 1,441 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 990.0. Ties are not counted.

Top 20 by Significance

9 April 1973

Top 20 records on 9 April 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 April 1973	Prairie du Chien, US	monthly snowfall	30.5 cm (12.0 in)	15.3 cm (6.0 in)	62 years	76 of 100 (Major)
9 April 1973	Forest City 2 NNE, US	daily snowfall	25.4 cm (10.0 in)	20.3 cm (8.0 in)	76 years	71 of 100 (Major)
9 April 1973	Knoxville, US	daily snowfall	30.5 cm (12.0 in)	30.5 cm (12.0 in)	77 years	71 of 100 (Major)
9 April 1973	Toledo 3N, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	77 years	71 of 100 (Major)
9 April 1973	Prairie du Sac 2 N, US	monthly snowfall	29.5 cm (11.6 in)	14.3 cm (5.6 in)	62 years	71 of 100 (Major)
9 April 1973	Grundy Ctr, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	79 years	69 of 100 (Major)
9 April 1973	Sigourney, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	73 years	69 of 100 (Major)
9 April 1973	Audubon, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	79 years	68 of 100 (Major)
9 April 1973	Plymouth Wwtp, US	monthly snowfall	35.6 cm (14.0 in)	15.3 cm (6.0 in)	62 years	68 of 100 (Major)
9 April 1973	Richland Ctr, US	monthly snowfall	30.5 cm (12.0 in)	18.8 cm (7.4 in)	43 years	68 of 100 (Major)
9 April 1973	West Bend, US	monthly snowfall	33.0 cm (13.0 in)	20.3 cm (8.0 in)	37 years	68 of 100 (Major)
9 April 1973	Wisconsin Dells Wwtp, US	monthly snowfall	30.5 cm (12.0 in)	16.5 cm (6.5 in)	44 years	68 of 100 (Major)
9 April 1973	Cedar Rapids #1, US	monthly snow depth	33.0 cm (13.0 in)	22.8 cm (9.0 in)	35 years	67 of 100 (Major)
9 April 1973	Indianola 1SW, US	daily snow depth	35.6 cm (14.0 in)	35.6 cm (14.0 in)	79 years	66 of 100 (Major)
9 April 1973	Ashfield Bowling Club, AU	daily rain	83.8 mm (3.3 in)	72.4 mm (2.9 in)	55 years	64 of 100 (Major)
9 April 1973	Dumont, US	monthly snowfall	33.0 cm (13.0 in)	20.3 cm (8.0 in)	36 years	64 of 100 (Major)
9 April 1973	Port Washington, US	daily snowfall	23.4 cm (9.2 in)	20.9 cm (8.2 in)	68 years	64 of 100 (Major)
9 April 1973	Cedar Rapids #1, US	monthly snowfall	25.4 cm (10.0 in)	7.6 cm (3.0 in)	76 years	62 of 100 (Major)
9 April 1973	Pella 1S, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	73 years	61 of 100 (Major)
9 April 1973	Williamsburg 1E, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	79 years	61 of 100 (Major)

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 1973

Records set or tied on this calendar date in each year from 1793 to 1973. 1973 had 1,695 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 1973-04-09: 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 200	1,419
200 to 400	19
400 to 600	2
600 to 800	0
800 to 1000	1