Weather Records on 21 April 1980

1,934 weather records were set or tied worldwide on 21 April 1980. Highest significance: Butte Falls 1 SE, US.

Key Facts for 21 April 1980

On 21 April 1980, 1,934 weather records were set or tied at long-record stations worldwide.
1,244 were record highs and 193 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 312 monthly and 1,620 daily.
Butte Falls 1 SE set a daily record precipitation of 28.4 mm (1.1 in) on 21 April 1980.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 453 records.

Record Map

1,934 stations

1,934 station records on 21 April 1980 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 1980: highest significance records shown on the map
Station	Country	Type	Value	Significance
Butte Falls 1 SE	United States	Record daily precipitation	28.4 mm (1.1 in)	64 of 100 (Major)
Muloorina Station (Muloorina H	Australia	Record daily precipitation	54.0 mm (2.1 in)	63 of 100 (Major)
Teresa Dale	Australia	Record daily precipitation	50.0 mm (2.0 in)	57 of 100 (Notable)
Mount Gould	Australia	Record daily precipitation	35.0 mm (1.4 in)	55 of 100 (Notable)
Harvey Post Office	Australia	Record daily precipitation	54.0 mm (2.1 in)	53 of 100 (Notable)
Tailem Bend	Australia	Record daily precipitation	40.4 mm (1.6 in)	53 of 100 (Notable)
Jarrahdale	Australia	Record daily precipitation	95.0 mm (3.7 in)	49 of 100 (Notable)
Wanneroo	Australia	Record daily precipitation	40.0 mm (1.6 in)	49 of 100 (Notable)
Narra Tarra	Australia	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Cuballing	Australia	Record daily precipitation	26.0 mm (1.0 in)	45 of 100 (Notable)
Wonnaminta	Australia	Record daily precipitation	31.7 mm (1.2 in)	45 of 100 (Notable)
Newton	United States	Record high maximum temperature	33.3 C (91.9 F)	45 of 100 (Notable)
Milan 1NW	United States	Record high minimum temperature	16.7 C (62.1 F)	45 of 100 (Notable)
Clear Lake	United States	Record high minimum temperature	14.4 C (57.9 F)	45 of 100 (Notable)
Dubois Exp STN	United States	Record high minimum temperature	15.0 C (59.0 F)	44 of 100 (Notable)
Charles City	United States	Record high maximum temperature	33.3 C (91.9 F)	44 of 100 (Notable)
Mundiwindi	Australia	Record daily precipitation	37.0 mm (1.5 in)	43 of 100 (Notable)
Caledonia	United States	Record high maximum temperature	33.9 C (93.0 F)	43 of 100 (Notable)
Erudina	Australia	Record daily precipitation	34.0 mm (1.3 in)	42 of 100 (Notable)
Cottage Grove Dam	United States	Record daily precipitation	34.3 mm (1.4 in)	42 of 100 (Notable)
Drain	United States	Record daily precipitation	34.0 mm (1.3 in)	42 of 100 (Notable)
Riddle	United States	Record daily precipitation	30.0 mm (1.2 in)	42 of 100 (Notable)
Nanutarra	Australia	Record daily precipitation	81.0 mm (3.2 in)	41 of 100 (Notable)
Karratha Station	Australia	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Glen Mervyn	Australia	Record daily precipitation	27.8 mm (1.1 in)	41 of 100 (Notable)
Ft Meade	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Neds Creek	Australia	Record daily precipitation	29.0 mm (1.1 in)	40 of 100 (Notable)
Greenview	United States	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Long Prairie	United States	Record high maximum temperature	35.0 C (95.0 F)	40 of 100 (Notable)
Roseau	United States	Record high maximum temperature	32.8 C (91.0 F)	40 of 100 (Notable)
Wishek	United States	Record high maximum temperature	33.9 C (93.0 F)	40 of 100 (Notable)
Castlewood	United States	Record high maximum temperature	36.1 C (97.0 F)	40 of 100 (Notable)
Hopewell 1 SE	United States	Record high maximum temperature	36.1 C (97.0 F)	40 of 100 (Notable)
Howard	United States	Record high maximum temperature	35.6 C (96.1 F)	40 of 100 (Notable)
Moosomin	Canada	Record high minimum temperature	13.0 C (55.4 F)	39 of 100 (Notable)
Le Mars	United States	Record high maximum temperature	35.6 C (96.1 F)	39 of 100 (Notable)
Mason City	United States	Record high maximum temperature	33.9 C (93.0 F)	39 of 100 (Notable)
New Ulm 2 SE	United States	Record high maximum temperature	35.0 C (95.0 F)	39 of 100 (Notable)
St Peter	United States	Record high maximum temperature	34.4 C (93.9 F)	39 of 100 (Notable)
Mohall	United States	Record high maximum temperature	33.3 C (91.9 F)	39 of 100 (Notable)
Napoleon	United States	Record high minimum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Lovell	United States	Record high maximum temperature	30.6 C (87.1 F)	39 of 100 (Notable)
Bunbury Post Office	Australia	Record daily precipitation	33.2 mm (1.3 in)	38 of 100 (Notable)
Wooroloo	Australia	Record daily precipitation	30.2 mm (1.2 in)	38 of 100 (Notable)
Nicosia	Cyprus	Record high minimum temperature	15.7 C (60.3 F)	38 of 100 (Notable)
Carson	United States	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Faulkton	United States	Record high minimum temperature	16.1 C (61.0 F)	38 of 100 (Notable)
Lead	United States	Record high maximum temperature	28.9 C (84.0 F)	38 of 100 (Notable)
Murdo	United States	Record high maximum temperature	36.7 C (98.1 F)	38 of 100 (Notable)
Pollock	United States	Record high maximum temperature	36.1 C (97.0 F)	38 of 100 (Notable)
Watertown Rgnl AP	United States	Record high maximum temperature	35.0 C (95.0 F)	38 of 100 (Notable)
Redwood Falls Muni AP	United States	Record high maximum temperature	35.6 C (96.1 F)	38 of 100 (Notable)
Roebourne	Australia	Record daily precipitation	34.0 mm (1.3 in)	37 of 100 (Notable)
New Norcia	Australia	Record daily precipitation	25.2 mm (1.0 in)	37 of 100 (Notable)
Council	United States	Record high minimum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Oskaloosa	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Bozeman Montana State UNIV	United States	Record high minimum temperature	8.9 C (48.0 F)	37 of 100 (Notable)
Langdon Exp Farm	United States	Record high minimum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Intl Falls Intl AP	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Milgun	Australia	Record daily precipitation	29.4 mm (1.2 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,934 records

Records set or tied on 21 April 1980 by type: Highest daily maximum 781, Lowest daily maximum 131, Highest daily minimum 463, Lowest daily minimum 62, Heaviest daily rainfall 469, Heaviest daily snowfall 6, Deepest snow cover 22.

Records on 21 April 1980 by type
Record type	Records
Highest daily maximum	781
Lowest daily maximum	131
Highest daily minimum	463
Lowest daily minimum	62
Heaviest daily rainfall	469
Heaviest daily snowfall	6
Deepest snow cover	22

Records on 21 April 1980 by timescale: all-time 2, monthly 312, daily 1,620.

How Much Records Were Beaten By

1,647 broken records

Margins by which the 1,647 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

21 April 1980

Top 20 records on 21 April 1980 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1980	Butte Falls 1 SE, US	daily rain	28.4 mm (1.1 in)	22.0 mm (0.9 in)	68 years	64 of 100 (Major)
21 April 1980	Muloorina Station (Muloorina H, AU	monthly rain	54.0 mm (2.1 in)	13.4 mm (0.5 in)	90 years	63 of 100 (Major)
21 April 1980	Teresa Dale, AU	daily rain	50.0 mm (2.0 in)	38.1 mm (1.5 in)	42 years	57 of 100 (Notable)
21 April 1980	Mount Gould, AU	daily rain	35.0 mm (1.4 in)	29.9 mm (1.2 in)	73 years	55 of 100 (Notable)
21 April 1980	Harvey Post Office, AU	daily rain	54.0 mm (2.1 in)	30.6 mm (1.2 in)	23 years	53 of 100 (Notable)
21 April 1980	Tailem Bend, AU	daily rain	40.4 mm (1.6 in)	24.7 mm (1.0 in)	20 years	53 of 100 (Notable)
21 April 1980	Jarrahdale, AU	monthly rain	95.0 mm (3.7 in)	24.9 mm (1.0 in)	29 years	49 of 100 (Notable)
21 April 1980	Wanneroo, AU	daily rain	40.0 mm (1.6 in)	28.6 mm (1.1 in)	10 years	49 of 100 (Notable)
21 April 1980	Narra Tarra, AU	daily rain	34.0 mm (1.3 in)	21.6 mm (0.9 in)	50 years	45 of 100 (Notable)
21 April 1980	Cuballing, AU	daily rain	26.0 mm (1.0 in)	15.8 mm (0.6 in)	63 years	45 of 100 (Notable)
21 April 1980	Wonnaminta, AU	daily rain	31.7 mm (1.2 in)	19.8 mm (0.8 in)	42 years	45 of 100 (Notable)
21 April 1980	Newton, US	monthly high max	33.3 C (91.9 F)	1.6 C (2.9 F)	84 years	45 of 100 (Notable)
21 April 1980	Milan 1NW, US	monthly high min	16.7 C (62.1 F)	1.1 C (2.0 F)	85 years	45 of 100 (Notable)
21 April 1980	Clear Lake, US	daily high min	14.4 C (57.9 F)	8.8 C (15.8 F)	72 years	45 of 100 (Notable)
21 April 1980	Dubois Exp STN, US	monthly high min	15.0 C (59.0 F)	6.1 C (11.0 F)	49 years	44 of 100 (Notable)
21 April 1980	Charles City, US	monthly high max	33.3 C (91.9 F)	1.1 C (2.0 F)	84 years	44 of 100 (Notable)
21 April 1980	Mundiwindi, AU	daily rain	37.0 mm (1.5 in)	30.1 mm (1.2 in)	37 years	43 of 100 (Notable)
21 April 1980	Caledonia, US	monthly high max	33.9 C (93.0 F)	3.3 C (5.9 F)	69 years	43 of 100 (Notable)
21 April 1980	Erudina, AU	daily rain	34.0 mm (1.3 in)	21.3 mm (0.8 in)	62 years	42 of 100 (Notable)
21 April 1980	Cottage Grove Dam, US	daily rain	34.3 mm (1.4 in)	17.5 mm (0.7 in)	25 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

1793 to 1980

Records set or tied on this calendar date in each year from 1793 to 1980. 1980 had 1,934 records.

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

Records on 04-21 in each year
Year	Records
1793	1
1814	1
1820	1
1838	1
1849	2
1851	1
1852	3
1854	1
1858	3
1861	2
1865	3
1866	1
1868	1
1870	1
1875	4
1876	2
1877	1
1879	3
1880	1
1881	1
1882	1
1884	1
1885	2
1888	1
1890	1
1891	1
1892	1
1893	2
1894	4
1895	1
1897	1
1898	2
1899	2
1900	7
1901	17
1902	7
1903	3
1904	10
1905	18
1906	5
1907	17
1908	25
1909	20
1910	33
1911	9
1912	22
1913	14
1914	220
1915	24
1916	64
1917	48
1918	84
1919	31
1920	85
1921	59
1922	70
1923	223
1924	119
1925	295
1926	148
1927	284
1928	269
1929	193
1930	127
1931	358
1932	304
1933	201
1934	497
1935	266
1936	277
1937	416
1938	295
1939	110
1940	462
1941	306
1942	285
1943	481
1944	261
1945	367
1946	448
1947	459
1948	365
1949	448
1950	529
1951	884
1952	665
1953	640
1954	527
1955	607
1956	497
1957	824
1958	329
1959	505
1960	889
1961	647
1962	319
1963	778
1964	1,125
1965	658
1966	756
1967	903
1968	655
1969	388
1970	728
1971	546
1972	593
1973	1,163
1974	528
1975	360
1976	452
1977	854
1978	735
1979	449
1980	1,934
1981	944
1982	1,075
1983	1,366
1984	1,231
1985	1,245
1986	977
1987	1,290
1988	898
1989	1,557
1990	1,463
1991	1,291
1992	1,763
1993	847
1994	859
1995	1,476
1996	788
1997	964
1998	876
1999	752
2000	921
2001	967
2002	1,312
2003	607
2004	586
2005	693
2006	761
2007	480
2008	1,327
2009	983
2010	805
2011	1,053
2012	687
2013	1,015
2014	393
2015	621
2016	587
2017	797
2018	862
2019	731
2020	397
2021	1,608
2022	433
2023	886
2024	754
2025	506
2026	853

Download the Data

Data for records on 1980-04-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 25	1,625
25 to 50	18
50 to 75	3
75 to 100	0
100 to 125	0
125 to 150	0
150 to 175	0
175 to 200	1