Weather Records on 17 April 1977

906 weather records were set or tied worldwide on 17 April 1977. Highest significance: Seliatyn, UA.

Key Facts for 17 April 1977

On 17 April 1977, 906 weather records were set or tied at long-record stations worldwide.
499 were record highs and 179 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 889 daily.
Seliatyn set a monthly record daily precipitation of 55.1 mm (2.2 in) on 17 April 1977.
Across 166 earlier years (1799 to 2026) the same calendar date averaged 450 records.

Record Map

906 stations

906 station records on 17 April 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 April 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Seliatyn	Ukraine	Record daily precipitation	55.1 mm (2.2 in)	57 of 100 (Notable)
Slavsko	Ukraine	Record daily precipitation	40.9 mm (1.6 in)	55 of 100 (Notable)
Raymondville	United States	Record daily precipitation	49.8 mm (2.0 in)	48 of 100 (Notable)
Rotan	United States	Record daily precipitation	62.5 mm (2.5 in)	47 of 100 (Notable)
Emblem	United States	Record daily snowfall	10.2 cm (4.0 in)	45 of 100 (Notable)
Dululu Post Office	Australia	Record daily precipitation	47.2 mm (1.9 in)	41 of 100 (Notable)
Gonvick 2 W	United States	Record daily precipitation	27.9 mm (1.1 in)	41 of 100 (Notable)
Innsbruck	Austria	Record low minimum temperature	-3.4 C (25.9 F)	40 of 100 (Notable)
Gayndah Post Office	Australia	Record daily precipitation	43.0 mm (1.7 in)	38 of 100 (Notable)
Caledonia	United States	Record high maximum temperature	28.3 C (82.9 F)	38 of 100 (Notable)
Luverne	United States	Record high minimum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Roseau	United States	Record high minimum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Archer City 2W	United States	Record daily precipitation	51.6 mm (2.0 in)	38 of 100 (Notable)
Salzburg	Austria	Record low minimum temperature	-3.2 C (26.2 F)	37 of 100 (Notable)
Kolomyia	Ukraine	Record daily precipitation	55.9 mm (2.2 in)	37 of 100 (Notable)
Fairmont	United States	Record high minimum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Cooperstown	United States	Record high minimum temperature	10.0 C (50.0 F)	36 of 100 (Notable)
Ellendale	United States	Record high minimum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Nurnberg	Germany	Record low minimum temperature	-3.4 C (25.9 F)	35 of 100 (Notable)
Greencastle 1 W	United States	Record high maximum temperature	31.1 C (88.0 F)	35 of 100 (Notable)
Huron Rgnl AP	United States	Record high minimum temperature	12.2 C (54.0 F)	35 of 100 (Notable)
Fort McMurray A	Canada	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)
Indian Head Cda	Canada	Record high minimum temperature	6.7 C (44.1 F)	34 of 100 (Routine)
Dixon Wwtp	United States	Record high maximum temperature	31.1 C (88.0 F)	34 of 100 (Routine)
Mattoon	United States	Record high maximum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Aberdeen	United States	Record high minimum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Boissevain	Canada	Record high minimum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Oberstdorf	Germany	Record low minimum temperature	-10.2 C (13.6 F)	33 of 100 (Routine)
Ternopil	Ukraine	Record daily precipitation	25.9 mm (1.0 in)	33 of 100 (Routine)
Danville	United States	Record high maximum temperature	30.6 C (87.1 F)	33 of 100 (Routine)
Monmouth	United States	Record high maximum temperature	31.1 C (88.0 F)	33 of 100 (Routine)
Palestine	United States	Record high maximum temperature	31.1 C (88.0 F)	33 of 100 (Routine)
Delphi 2 N	United States	Record high maximum temperature	30.0 C (86.0 F)	33 of 100 (Routine)
Fayette	United States	Record high maximum temperature	30.6 C (87.1 F)	33 of 100 (Routine)
Howard	United States	Record high minimum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Franklin Sewage Plt	United States	Record high maximum temperature	31.7 C (89.1 F)	33 of 100 (Routine)
Mae Dagua de Dentro	Brazil	Record daily precipitation	121.2 mm (4.8 in)	32 of 100 (Routine)
Birtle	Canada	Record high minimum temperature	8.9 C (48.0 F)	32 of 100 (Routine)
Cypress River	Canada	Record high minimum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Charles City	United States	Record high minimum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Iowa City	United States	Record high maximum temperature	29.4 C (84.9 F)	32 of 100 (Routine)
Sigourney	United States	Record high maximum temperature	30.0 C (86.0 F)	32 of 100 (Routine)
S Haven	United States	Record high maximum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Imperial	United States	Record high minimum temperature	8.9 C (48.0 F)	32 of 100 (Routine)
Grand Forks UNIV (NWS)	United States	Record high minimum temperature	12.8 C (55.0 F)	32 of 100 (Routine)
Prairie du Chien	United States	Record high maximum temperature	30.0 C (86.0 F)	32 of 100 (Routine)
Dallarnil Telephone Exch	Australia	Record daily precipitation	32.0 mm (1.3 in)	31 of 100 (Routine)
Graz	Austria	Record low minimum temperature	-1.5 C (29.3 F)	31 of 100 (Routine)
Crookston NW Exp STN	United States	Record high minimum temperature	11.7 C (53.1 F)	31 of 100 (Routine)
Mayville	United States	Record high minimum temperature	12.8 C (55.0 F)	31 of 100 (Routine)
Willow City	United States	Record high minimum temperature	9.4 C (48.9 F)	31 of 100 (Routine)
Mangum	United States	Record daily precipitation	39.4 mm (1.6 in)	31 of 100 (Routine)
Armour	United States	Record high minimum temperature	13.3 C (55.9 F)	31 of 100 (Routine)
Robert Lee 4WSW	United States	Record daily precipitation	53.3 mm (2.1 in)	31 of 100 (Routine)
Sioux Falls	United States	Record high minimum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Redwood Falls Muni AP	United States	Record high minimum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Rannes Railway Station	Australia	Record daily precipitation	25.0 mm (1.0 in)	30 of 100 (Routine)
Wahpeton 3 N	United States	Record high minimum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Marshall	United States	Record high maximum temperature	32.2 C (90.0 F)	30 of 100 (Routine)
Watertown Rgnl AP	United States	Record high minimum temperature	11.1 C (52.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

906 records

Records set or tied on 17 April 1977 by type: Highest daily maximum 242, Lowest daily maximum 38, Highest daily minimum 257, Lowest daily minimum 141, Heaviest daily rainfall 213, Heaviest daily snowfall 6, Deepest snow cover 9.

Records on 17 April 1977 by type
Record type	Records
Highest daily maximum	242
Lowest daily maximum	38
Highest daily minimum	257
Lowest daily minimum	141
Heaviest daily rainfall	213
Heaviest daily snowfall	6
Deepest snow cover	9

Records on 17 April 1977 by timescale: all-time 0, monthly 17, daily 889.

How Much Records Were Beaten By

723 broken records

Margins by which the 723 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 400.0. Ties are not counted.

Top 20 by Significance

17 April 1977

Top 20 records on 17 April 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 April 1977	Seliatyn, UA	monthly rain	55.1 mm (2.2 in)	28.3 mm (1.1 in)	15 years	57 of 100 (Notable)
17 April 1977	Slavsko, UA	monthly rain	40.9 mm (1.6 in)	18.9 mm (0.7 in)	6 years	55 of 100 (Notable)
17 April 1977	Raymondville, US	daily rain	49.8 mm (2.0 in)	43.7 mm (1.7 in)	40 years	48 of 100 (Notable)
17 April 1977	Rotan, US	daily rain	62.5 mm (2.5 in)	36.6 mm (1.4 in)	43 years	47 of 100 (Notable)
17 April 1977	Emblem, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	64 years	45 of 100 (Notable)
17 April 1977	Dululu Post Office, AU	daily rain	47.2 mm (1.9 in)	34.5 mm (1.4 in)	23 years	41 of 100 (Notable)
17 April 1977	Gonvick 2 W, US	daily rain	27.9 mm (1.1 in)	14.7 mm (0.6 in)	50 years	41 of 100 (Notable)
17 April 1977	Innsbruck, AT	daily low min	-3.4 C (25.9 F)	1.4 C (2.5 F)	89 years	40 of 100 (Notable)
17 April 1977	Gayndah Post Office, AU	daily rain	43.0 mm (1.7 in)	12.5 mm (0.5 in)	66 years	38 of 100 (Notable)
17 April 1977	Caledonia, US	daily high max	28.3 C (82.9 F)	4.4 C (7.9 F)	80 years	38 of 100 (Notable)
17 April 1977	Luverne, US	daily high min	15.6 C (60.1 F)	3.4 C (6.1 F)	82 years	38 of 100 (Notable)
17 April 1977	Roseau, US	daily high min	12.8 C (55.0 F)	3.9 C (7.0 F)	81 years	38 of 100 (Notable)
17 April 1977	Archer City 2W, US	daily rain	51.6 mm (2.0 in)	45.0 mm (1.8 in)	18 years	38 of 100 (Notable)
17 April 1977	Salzburg, AT	daily low min	-3.2 C (26.2 F)	0.6 C (1.1 F)	89 years	37 of 100 (Notable)
17 April 1977	Kolomyia, UA	monthly rain	55.9 mm (2.2 in)	10.1 mm (0.4 in)	27 years	37 of 100 (Notable)
17 April 1977	Fairmont, US	daily high min	15.0 C (59.0 F)	2.2 C (4.0 F)	82 years	36 of 100 (Notable)
17 April 1977	Cooperstown, US	daily high min	10.0 C (50.0 F)	4.4 C (7.9 F)	71 years	36 of 100 (Notable)
17 April 1977	Ellendale, US	daily high min	10.6 C (51.1 F)	4.5 C (8.1 F)	68 years	36 of 100 (Notable)
17 April 1977	Nurnberg, DE	daily low min	-3.4 C (25.9 F)	0.2 C (0.4 F)	89 years	35 of 100 (Notable)
17 April 1977	Greencastle 1 W, US	daily high max	31.1 C (88.0 F)	2.2 C (4.0 F)	80 years	35 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

1799 to 1977

Records set or tied on this calendar date in each year from 1799 to 1977. 1977 had 906 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 1977-04-17: 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 50	713
50 to 100	5
100 to 150	1
150 to 200	1
200 to 250	1
250 to 300	1
300 to 350	0
350 to 400	1