Weather Records on 17 April 1981

621 weather records were set or tied worldwide on 17 April 1981. Highest significance: Moyoguarda, MX.

Key Facts for 17 April 1981

On 17 April 1981, 621 weather records were set or tied at long-record stations worldwide.
265 were record highs and 140 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 612 daily.
Moyoguarda set a daily record precipitation of 32.3 mm (1.3 in) on 17 April 1981.
Across 166 earlier years (1799 to 2026) the same calendar date averaged 451 records.

Record Map

621 stations

621 station records on 17 April 1981 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 April 1981: highest significance records shown on the map
Station	Country	Type	Value	Significance
Moyoguarda	Mexico	Record daily precipitation	32.3 mm (1.3 in)	56 of 100 (Notable)
Bairro Alto	Brazil	Record daily precipitation	65.3 mm (2.6 in)	55 of 100 (Notable)
Cachoeira da Graca	Brazil	Record daily precipitation	48.1 mm (1.9 in)	55 of 100 (Notable)
Pariquera-Acu	Brazil	Record daily precipitation	73.5 mm (2.9 in)	50 of 100 (Notable)
Kirklington	South Africa	Record daily precipitation	56.5 mm (2.2 in)	50 of 100 (Notable)
Evangelista de Souza	Brazil	Record daily precipitation	143.0 mm (5.6 in)	49 of 100 (Notable)
Juquitiba	Brazil	Record daily precipitation	81.1 mm (3.2 in)	48 of 100 (Notable)
Itapecerica da Serra	Brazil	Record daily precipitation	69.4 mm (2.7 in)	47 of 100 (Notable)
Pedro Beicht	Brazil	Record daily precipitation	71.3 mm (2.8 in)	47 of 100 (Notable)
Hill End Post Office	Australia	Record daily precipitation	38.0 mm (1.5 in)	44 of 100 (Notable)
Juquia	Brazil	Record daily precipitation	67.6 mm (2.7 in)	44 of 100 (Notable)
Itariri	Brazil	Record daily precipitation	81.0 mm (3.2 in)	43 of 100 (Notable)
Pickle Lake (Aut)	Canada	Record daily snowfall	25.8 cm (10.2 in)	43 of 100 (Notable)
Rogersville 1 NE	United States	Record daily precipitation	42.7 mm (1.7 in)	37 of 100 (Notable)
Pitas	Brazil	Record daily precipitation	59.1 mm (2.3 in)	36 of 100 (Notable)
Elliotdale (Tnk)	South Africa	Record daily precipitation	70.0 mm (2.8 in)	36 of 100 (Notable)
Recalque Abc	Brazil	Record daily precipitation	48.6 mm (1.9 in)	35 of 100 (Notable)
Fazenda Santo Angelo	Brazil	Record daily precipitation	33.0 mm (1.3 in)	34 of 100 (Routine)
San Juan	Mexico	Record daily precipitation	96.5 mm (3.8 in)	34 of 100 (Routine)
Abilene	United States	Record high maximum temperature	32.2 C (90.0 F)	34 of 100 (Routine)
Aquiles Serdan 46	Mexico	Record daily precipitation	25.4 mm (1.0 in)	31 of 100 (Routine)
Sacaton	United States	Record high minimum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Cooperstown	United States	Record high maximum temperature	27.2 C (81.0 F)	31 of 100 (Routine)
Knoxville AP	United States	Record daily precipitation	25.1 mm (1.0 in)	31 of 100 (Routine)
Natividade da Serra	Brazil	Record daily precipitation	29.8 mm (1.2 in)	30 of 100 (Routine)
Allende (Smn)	Mexico	Record low minimum temperature	6.7 C (44.1 F)	30 of 100 (Routine)
Larned	United States	Record high maximum temperature	35.0 C (95.0 F)	30 of 100 (Routine)
Bowbells	United States	Record high maximum temperature	27.2 C (81.0 F)	30 of 100 (Routine)
Marathon	United States	Record low maximum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Picinguaba	Brazil	Record daily precipitation	71.2 mm (2.8 in)	29 of 100 (Routine)
Szombathely	Hungary	Record low minimum temperature	-2.0 C (28.4 F)	29 of 100 (Routine)
Canelo 1 NW	United States	Record high minimum temperature	11.7 C (53.1 F)	29 of 100 (Routine)
Appleton City	United States	Record high maximum temperature	32.2 C (90.0 F)	29 of 100 (Routine)
Camp Wood	United States	Record daily precipitation	67.8 mm (2.7 in)	29 of 100 (Routine)
Santo Amaro	Brazil	Record daily precipitation	31.2 mm (1.2 in)	28 of 100 (Routine)
Angermunde	Germany	Record low minimum temperature	-3.0 C (26.6 F)	28 of 100 (Routine)
Tonala (Smn)	Mexico	Record low minimum temperature	18.9 C (66.0 F)	28 of 100 (Routine)
Utuado	Puerto Rico [United States]	Record low maximum temperature	26.1 C (79.0 F)	28 of 100 (Routine)
Grand Lake 1 NW	United States	Record high minimum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Batavia	United States	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Cairo 3N	United States	Record high minimum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
Freguesia da Escada	Brazil	Record daily precipitation	25.3 mm (1.0 in)	27 of 100 (Routine)
Barra Do Capinzal	Brazil	Record daily precipitation	43.4 mm (1.7 in)	27 of 100 (Routine)
Acude Serrote	Brazil	Record daily precipitation	72.2 mm (2.8 in)	27 of 100 (Routine)
Potsdam	Germany	Record low minimum temperature	-2.7 C (27.1 F)	27 of 100 (Routine)
Lastovo	Croatia	Record daily precipitation	43.9 mm (1.7 in)	27 of 100 (Routine)
Moyale	Kenya	Record daily precipitation	58.2 mm (2.3 in)	27 of 100 (Routine)
Howard 2SE	United States	Record high maximum temperature	31.1 C (88.0 F)	27 of 100 (Routine)
Clover Valley	United States	Record high maximum temperature	22.8 C (73.0 F)	27 of 100 (Routine)
Granville	United States	Record high maximum temperature	28.9 C (84.0 F)	27 of 100 (Routine)
Pollock	United States	Record high minimum temperature	8.9 C (48.0 F)	27 of 100 (Routine)
Formosa Do Rio Preto (Pcd)	Brazil	Record daily precipitation	49.0 mm (1.9 in)	26 of 100 (Routine)
Saint Bernard	United States	Record high minimum temperature	18.9 C (66.0 F)	26 of 100 (Routine)
Mc Henry 3W	United States	Record high maximum temperature	27.8 C (82.0 F)	26 of 100 (Routine)
Mott	United States	Record high maximum temperature	27.8 C (82.0 F)	26 of 100 (Routine)
Kaneohe Mauka 781	United States	Record high minimum temperature	23.9 C (75.0 F)	26 of 100 (Routine)
Charleston - Yeager AP	United States	Record daily precipitation	25.1 mm (1.0 in)	26 of 100 (Routine)
Kuujjuarapik A	Canada	Record low minimum temperature	-26.4 C (-15.5 F)	25 of 100 (Routine)
Baddeck	Canada	Record low minimum temperature	-10.0 C (14.0 F)	25 of 100 (Routine)
Corozal Substn	Puerto Rico [United States]	Record low maximum temperature	24.4 C (75.9 F)	25 of 100 (Routine)

Counts by Type and Timescale

621 records

Records set or tied on 17 April 1981 by type: Highest daily maximum 122, Lowest daily maximum 49, Highest daily minimum 143, Lowest daily minimum 91, Heaviest daily rainfall 211, Heaviest daily snowfall 4, Deepest snow cover 1.

Records on 17 April 1981 by type
Record type	Records
Highest daily maximum	122
Lowest daily maximum	49
Highest daily minimum	143
Lowest daily minimum	91
Heaviest daily rainfall	211
Heaviest daily snowfall	4
Deepest snow cover	1

Records on 17 April 1981 by timescale: all-time 0, monthly 9, daily 612.

How Much Records Were Beaten By

506 broken records

Margins by which the 506 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 134.0. Ties are not counted.

Top 20 by Significance

17 April 1981

Top 20 records on 17 April 1981 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 April 1981	Moyoguarda, MX	daily rain	32.3 mm (1.3 in)	24.7 mm (1.0 in)	58 years	56 of 100 (Notable)
17 April 1981	Bairro Alto, BR	daily rain	65.3 mm (2.6 in)	45.6 mm (1.8 in)	39 years	55 of 100 (Notable)
17 April 1981	Cachoeira da Graca, BR	daily rain	48.1 mm (1.9 in)	37.9 mm (1.5 in)	44 years	55 of 100 (Notable)
17 April 1981	Pariquera-Acu, BR	daily rain	73.5 mm (2.9 in)	49.5 mm (1.9 in)	28 years	50 of 100 (Notable)
17 April 1981	Kirklington, ZA	daily rain	56.5 mm (2.2 in)	30.6 mm (1.2 in)	32 years	50 of 100 (Notable)
17 April 1981	Evangelista de Souza, BR	daily rain	143.0 mm (5.6 in)	95.0 mm (3.7 in)	18 years	49 of 100 (Notable)
17 April 1981	Juquitiba, BR	daily rain	81.1 mm (3.2 in)	45.8 mm (1.8 in)	28 years	48 of 100 (Notable)
17 April 1981	Itapecerica da Serra, BR	daily rain	69.4 mm (2.7 in)	46.9 mm (1.8 in)	16 years	47 of 100 (Notable)
17 April 1981	Pedro Beicht, BR	daily rain	71.3 mm (2.8 in)	46.8 mm (1.8 in)	10 years	47 of 100 (Notable)
17 April 1981	Hill End Post Office, AU	daily rain	38.0 mm (1.5 in)	10.3 mm (0.4 in)	91 years	44 of 100 (Notable)
17 April 1981	Juquia, BR	daily rain	67.6 mm (2.7 in)	48.4 mm (1.9 in)	28 years	44 of 100 (Notable)
17 April 1981	Itariri, BR	daily rain	81.0 mm (3.2 in)	65.8 mm (2.6 in)	8 years	43 of 100 (Notable)
17 April 1981	Pickle Lake (Aut), CA	daily snowfall	25.8 cm (10.2 in)	13.4 cm (5.3 in)	36 years	43 of 100 (Notable)
17 April 1981	Rogersville 1 NE, US	daily rain	42.7 mm (1.7 in)	10.4 mm (0.4 in)	60 years	37 of 100 (Notable)
17 April 1981	Pitas, BR	daily rain	59.1 mm (2.3 in)	28.4 mm (1.1 in)	26 years	36 of 100 (Notable)
17 April 1981	Elliotdale (Tnk), ZA	daily rain	70.0 mm (2.8 in)	30.0 mm (1.2 in)	26 years	36 of 100 (Notable)
17 April 1981	Recalque Abc, BR	daily rain	48.6 mm (1.9 in)	30.8 mm (1.2 in)	10 years	35 of 100 (Notable)
17 April 1981	Fazenda Santo Angelo, BR	daily rain	33.0 mm (1.3 in)	25.0 mm (1.0 in)	18 years	34 of 100 (Routine)
17 April 1981	San Juan, MX	daily rain	96.5 mm (3.8 in)	53.6 mm (2.1 in)	12 years	34 of 100 (Routine)
17 April 1981	Abilene, US	daily high max	32.2 C (90.0 F)	0.5 C (0.9 F)	86 years	34 of 100 (Routine)

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

1799 to 1981

Records set or tied on this calendar date in each year from 1799 to 1981. 1981 had 621 records.

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

Records on 04-17 in each year
Year	Records
1799	1
1807	1
1808	1
1815	1
1817	1
1818	1
1819	1
1823	1
1825	1
1830	1
1835	3
1837	1
1845	1
1847	2
1851	1
1852	3
1853	1
1854	1
1855	1
1857	1
1858	1
1862	1
1865	2
1868	1
1873	4
1874	1
1875	3
1877	4
1878	2
1880	2
1889	1
1890	2
1891	2
1892	4
1894	5
1895	1
1896	5
1897	6
1898	3
1899	1
1900	2
1901	4
1902	4
1903	5
1904	19
1905	11
1906	14
1907	16
1908	38
1909	7
1910	29
1911	33
1912	27
1913	20
1914	83
1915	30
1916	30
1917	32
1918	35
1919	39
1920	87
1921	148
1922	96
1923	71
1924	74
1925	103
1926	140
1927	256
1928	308
1929	145
1930	238
1931	216
1932	615
1933	261
1934	234
1935	374
1936	308
1937	439
1938	564
1939	618
1940	337
1941	460
1942	415
1943	285
1944	334
1945	475
1946	492
1947	461
1948	622
1949	439
1950	293
1951	441
1952	529
1953	818
1954	650
1955	394
1956	486
1957	277
1958	702
1959	434
1960	553
1961	667
1962	597
1963	702
1964	766
1965	411
1966	409
1967	935
1968	745
1969	728
1970	547
1971	924
1972	546
1973	589
1974	244
1975	666
1976	1,630
1977	906
1978	620
1979	810
1980	675
1981	621
1982	965
1983	1,365
1984	720
1985	917
1986	997
1987	960
1988	1,082
1989	638
1990	1,065
1991	614
1992	1,105
1993	847
1994	1,047
1995	1,211
1996	1,044
1997	889
1998	1,795
1999	1,730
2000	1,082
2001	1,013
2002	2,284
2003	1,037
2004	761
2005	572
2006	1,430
2007	863
2008	842
2009	779
2010	606
2011	982
2012	920
2013	1,796
2014	913
2015	813
2016	977
2017	469
2018	1,585
2019	458
2020	1,165
2021	701
2022	831
2023	628
2024	690
2025	1,058
2026	838

Download the Data

Data for records on 1981-04-17: 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 20	480
20 to 40	13
40 to 60	10
60 to 80	1
80 to 100	1
100 to 120	0
120 to 140	1