Weather Records on 17 April 1951

441 weather records were set or tied worldwide on 17 April 1951. Highest significance: Bool Lagoon, AU.

Key Facts for 17 April 1951

On 17 April 1951, 441 weather records were set or tied at long-record stations worldwide.
58 were record highs and 229 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 437 daily.
Bool Lagoon set a monthly record daily precipitation of 66.0 mm (2.6 in) on 17 April 1951.
Across 166 earlier years (1799 to 2026) the same calendar date averaged 453 records.

Record Map

441 stations

441 station records on 17 April 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 April 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bool Lagoon	Australia	Record daily precipitation	66.0 mm (2.6 in)	55 of 100 (Notable)
Lake Louise	Canada	Record daily precipitation	35.6 mm (1.4 in)	52 of 100 (Notable)
Lake Louise	Canada	Record daily snowfall	35.6 cm (14.0 in)	49 of 100 (Notable)
Pacific Salt	Australia	Record daily precipitation	68.6 mm (2.7 in)	48 of 100 (Notable)
Mykland	Norway	Record snow depth	155.0 cm (61.0 in)	43 of 100 (Notable)
Bajag	India	Record daily precipitation	39.4 mm (1.6 in)	42 of 100 (Notable)
Cleve (Pineside)	Australia	Record daily precipitation	27.9 mm (1.1 in)	38 of 100 (Notable)
Irikkur	India	Record daily precipitation	66.0 mm (2.6 in)	38 of 100 (Notable)
Paulo Afonso	Brazil	Record daily precipitation	79.0 mm (3.1 in)	33 of 100 (Routine)
Bom Jesus da Lapa	Brazil	Record daily precipitation	43.3 mm (1.7 in)	33 of 100 (Routine)
Englesberg Village	Australia	Record daily precipitation	35.8 mm (1.4 in)	32 of 100 (Routine)
Hedal I Valdres	Norway	Record snow depth	135.0 cm (53.1 in)	32 of 100 (Routine)
Risnes I Fjotland	Norway	Record snow depth	106.0 cm (41.7 in)	30 of 100 (Routine)
Bathurst	Canada	Record high minimum temperature	2.2 C (36.0 F)	29 of 100 (Routine)
Postmyr I Drangedal	Norway	Record snow depth	175.0 cm (68.9 in)	29 of 100 (Routine)
Kahuku 912	United States	Record high minimum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Santa Rita de Cassia	Brazil	Record daily precipitation	65.0 mm (2.6 in)	28 of 100 (Routine)
Freiburg	Germany	Record high minimum temperature	11.6 C (52.9 F)	28 of 100 (Routine)
Pocahontas 1	United States	Record low minimum temperature	-2.2 C (28.0 F)	28 of 100 (Routine)
Russellville	United States	Record low minimum temperature	-1.7 C (28.9 F)	28 of 100 (Routine)
Broome Post Office	Australia	Record high minimum temperature	27.8 C (82.0 F)	27 of 100 (Routine)
Guayama 1SW	Puerto Rico [United States]	Record high maximum temperature	34.4 C (93.9 F)	27 of 100 (Routine)
Yreka	United States	Record high minimum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Yerevan	Armenia	Record high minimum temperature	13.1 C (55.6 F)	26 of 100 (Routine)
Irwin	United States	Record daily snowfall	5.1 cm (2.0 in)	26 of 100 (Routine)
Amcor - Petrie Mill	Australia	Record daily precipitation	47.0 mm (1.9 in)	25 of 100 (Routine)
Tuddal	Norway	Record snow depth	132.0 cm (52.0 in)	25 of 100 (Routine)
Aseral	Norway	Record snow depth	135.0 cm (53.1 in)	25 of 100 (Routine)
Longreach Post Office	Australia	Record high maximum temperature	37.8 C (100.0 F)	24 of 100 (Routine)
Hiasen I Sigdal	Norway	Record snow depth	134.0 cm (52.8 in)	24 of 100 (Routine)
Effingham 3SW	United States	Record low minimum temperature	-2.8 C (27.0 F)	24 of 100 (Routine)
Poplar Bluff	United States	Record low minimum temperature	-1.7 C (28.9 F)	24 of 100 (Routine)
Coalstoun Lakes	Australia	Record daily precipitation	32.0 mm (1.3 in)	23 of 100 (Routine)
Harrisville Post Office	Australia	Record daily precipitation	25.4 mm (1.0 in)	23 of 100 (Routine)
Quesnel	Canada	Record low minimum temperature	-10.6 C (12.9 F)	23 of 100 (Routine)
Calgary Int'l A	Canada	Record daily snowfall	13.5 cm (5.3 in)	23 of 100 (Routine)
Princeton	United States	Record low minimum temperature	-4.4 C (24.1 F)	23 of 100 (Routine)
Pine Rvr Dam	United States	Record low minimum temperature	-12.8 C (9.0 F)	23 of 100 (Routine)
Lakeview 2 NNW	United States	Record high minimum temperature	7.2 C (45.0 F)	23 of 100 (Routine)
Emery	United States	Record high minimum temperature	8.9 C (48.0 F)	23 of 100 (Routine)
Old Halls Creek	Australia	Record high minimum temperature	26.7 C (80.1 F)	22 of 100 (Routine)
Herefoss	Norway	Record snow depth	128.0 cm (50.4 in)	22 of 100 (Routine)
Zametchino	Russia	Record high minimum temperature	7.5 C (45.5 F)	22 of 100 (Routine)
1 N McLeansboro	United States	Record low minimum temperature	-2.2 C (28.0 F)	22 of 100 (Routine)
1 WSW Princeton	United States	Record low minimum temperature	-2.8 C (27.0 F)	22 of 100 (Routine)
Elkader 6 SSW	United States	Record low minimum temperature	-7.8 C (18.0 F)	22 of 100 (Routine)
Owensboro 3ENE	United States	Record low minimum temperature	-2.8 C (27.0 F)	22 of 100 (Routine)
Jeanerette 5 NW	United States	Record low maximum temperature	20.0 C (68.0 F)	22 of 100 (Routine)
Brainerd	United States	Record low minimum temperature	-8.9 C (16.0 F)	22 of 100 (Routine)
Georgetown Post Office	Australia	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Tiruchchirapalli	India	Record daily precipitation	59.7 mm (2.4 in)	21 of 100 (Routine)
Quincy Exp STN	United States	Record low maximum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
Columbus	United States	Record low maximum temperature	6.1 C (43.0 F)	21 of 100 (Routine)
Kosciusko	United States	Record low minimum temperature	-0.6 C (30.9 F)	21 of 100 (Routine)
Golconda	United States	Record high minimum temperature	7.8 C (46.0 F)	21 of 100 (Routine)
Hillsboro	United States	Record low minimum temperature	-3.9 C (25.0 F)	21 of 100 (Routine)
Streaky Bay	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Port Kenny (Yandra)	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Wakool (Calimo)	Australia	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Alturas	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)

Counts by Type and Timescale

441 records

Records set or tied on 17 April 1951 by type: Highest daily maximum 18, Lowest daily maximum 74, Highest daily minimum 40, Lowest daily minimum 155, Heaviest daily rainfall 118, Heaviest daily snowfall 21, Deepest snow cover 15.

Records on 17 April 1951 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	74
Highest daily minimum	40
Lowest daily minimum	155
Heaviest daily rainfall	118
Heaviest daily snowfall	21
Deepest snow cover	15

Records on 17 April 1951 by timescale: all-time 0, monthly 4, daily 437.

How Much Records Were Beaten By

347 broken records

Margins by which the 347 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 750.0. Ties are not counted.

Top 20 by Significance

17 April 1951

Top 20 records on 17 April 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 April 1951	Bool Lagoon, AU	monthly rain	66.0 mm (2.6 in)	22.6 mm (0.9 in)	8 years	55 of 100 (Notable)
17 April 1951	Lake Louise, CA	daily rain	35.6 mm (1.4 in)	24.2 mm (1.0 in)	32 years	52 of 100 (Notable)
17 April 1951	Lake Louise, CA	daily snowfall	35.6 cm (14.0 in)	32.8 cm (12.9 in)	22 years	49 of 100 (Notable)
17 April 1951	Pacific Salt, AU	daily rain	68.6 mm (2.7 in)	52.6 mm (2.1 in)	40 years	48 of 100 (Notable)
17 April 1951	Mykland, NO	daily snow depth	155.0 cm (61.0 in)	75.0 cm (29.5 in)	50 years	43 of 100 (Notable)
17 April 1951	Bajag, IN	daily rain	39.4 mm (1.6 in)	36.1 mm (1.4 in)	8 years	42 of 100 (Notable)
17 April 1951	Cleve (Pineside), AU	daily rain	27.9 mm (1.1 in)	17.2 mm (0.7 in)	12 years	38 of 100 (Notable)
17 April 1951	Irikkur, IN	daily rain	66.0 mm (2.6 in)	43.4 mm (1.7 in)	42 years	38 of 100 (Notable)
17 April 1951	Paulo Afonso, BR	daily rain	79.0 mm (3.1 in)	43.7 mm (1.7 in)	26 years	33 of 100 (Routine)
17 April 1951	Bom Jesus da Lapa, BR	daily rain	43.3 mm (1.7 in)	29.2 mm (1.1 in)	32 years	33 of 100 (Routine)
17 April 1951	Englesberg Village, AU	daily rain	35.8 mm (1.4 in)	10.7 mm (0.4 in)	61 years	32 of 100 (Routine)
17 April 1951	Hedal I Valdres, NO	daily snow depth	135.0 cm (53.1 in)	37.0 cm (14.6 in)	46 years	32 of 100 (Routine)
17 April 1951	Risnes I Fjotland, NO	daily snow depth	106.0 cm (41.7 in)	31.0 cm (12.2 in)	33 years	30 of 100 (Routine)
17 April 1951	Bathurst, CA	daily high min	2.2 C (36.0 F)	0.5 C (0.9 F)	67 years	29 of 100 (Routine)
17 April 1951	Postmyr I Drangedal, NO	daily snow depth	175.0 cm (68.9 in)	40.0 cm (15.7 in)	50 years	29 of 100 (Routine)
17 April 1951	Kahuku 912, US	daily high min	23.9 C (75.0 F)	2.2 C (4.0 F)	44 years	29 of 100 (Routine)
17 April 1951	Santa Rita de Cassia, BR	daily rain	65.0 mm (2.6 in)	35.0 mm (1.4 in)	0 years	28 of 100 (Routine)
17 April 1951	Freiburg, DE	daily high min	11.6 C (52.9 F)	1.1 C (2.0 F)	62 years	28 of 100 (Routine)
17 April 1951	Pocahontas 1, US	daily low min	-2.2 C (28.0 F)	3.3 C (5.9 F)	46 years	28 of 100 (Routine)
17 April 1951	Russellville, US	daily low min	-1.7 C (28.9 F)	4.5 C (8.1 F)	45 years	28 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 1951

Records set or tied on this calendar date in each year from 1799 to 1951. 1951 had 441 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 1951-04-17: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 100	334
100 to 200	5
200 to 300	0
300 to 400	6
400 to 500	1
500 to 600	0
600 to 700	0
700 to 800	1