Weather Records on 17 April 2017

469 weather records were set or tied worldwide on 17 April 2017. Highest significance: Koloa Mauka 994, US.

Key Facts for 17 April 2017

On 17 April 2017, 469 weather records were set or tied at long-record stations worldwide.
240 were record highs and 63 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 8 monthly and 461 daily.
Koloa Mauka 994 set a daily record precipitation of 146.8 mm (5.8 in) on 17 April 2017.
Across 166 earlier years (1799 to 2026) the same calendar date averaged 452 records.

Record Map

469 stations

469 station records on 17 April 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 April 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Koloa Mauka 994	United States	Record daily precipitation	146.8 mm (5.8 in)	68 of 100 (Major)
Sewanee	United States	Record daily precipitation	91.4 mm (3.6 in)	65 of 100 (Major)
Ralston	United States	Record daily precipitation	92.7 mm (3.6 in)	59 of 100 (Notable)
Quelimane	Mozambique	Record daily precipitation	141.0 mm (5.6 in)	57 of 100 (Notable)
Antlers	United States	Record daily precipitation	63.5 mm (2.5 in)	57 of 100 (Notable)
La Pryor	United States	Record daily precipitation	95.3 mm (3.8 in)	57 of 100 (Notable)
Mengzi	China	Record daily precipitation	42.7 mm (1.7 in)	56 of 100 (Notable)
Napoopoo 28	United States	Record daily precipitation	38.6 mm (1.5 in)	56 of 100 (Notable)
Lincang	China	Record daily precipitation	70.9 mm (2.8 in)	55 of 100 (Notable)
Kunming	China	Record daily precipitation	29.2 mm (1.1 in)	53 of 100 (Notable)
Brownfield	United States	Record daily precipitation	85.6 mm (3.4 in)	53 of 100 (Notable)
Nevertire	Australia	Record daily precipitation	30.2 mm (1.2 in)	51 of 100 (Notable)
Woodstock	United States	Record high minimum temperature	14.4 C (57.9 F)	51 of 100 (Notable)
Lijing	China	Record daily precipitation	35.3 mm (1.4 in)	50 of 100 (Notable)
Morgantown L&D	United States	Record daily precipitation	39.1 mm (1.5 in)	50 of 100 (Notable)
St. Brandon (St. Ra	Mauritius	Record daily precipitation	68.1 mm (2.7 in)	49 of 100 (Notable)
Gravette	United States	Record daily precipitation	56.9 mm (2.2 in)	49 of 100 (Notable)
Iizuka	Japan	Record daily precipitation	108.0 mm (4.3 in)	47 of 100 (Notable)
Sibu	Malaysia	Record daily precipitation	154.7 mm (6.1 in)	47 of 100 (Notable)
Sta. Cruz de Tenerife	Spain	Record high maximum temperature	31.2 C (88.2 F)	47 of 100 (Notable)
Hirado	Japan	Record daily precipitation	152.9 mm (6.0 in)	46 of 100 (Notable)
Lockwood	United States	Record daily precipitation	30.2 mm (1.2 in)	46 of 100 (Notable)
Cheviot	United States	Record daily precipitation	55.1 mm (2.2 in)	45 of 100 (Notable)
Lehigh 4 SW	United States	Record daily precipitation	41.4 mm (1.6 in)	45 of 100 (Notable)
Tenerife/Los Rodeos	Spain	Record high maximum temperature	32.7 C (90.9 F)	44 of 100 (Notable)
Little Rock AFB	United States	Record daily precipitation	86.4 mm (3.4 in)	44 of 100 (Notable)
Mansfield	United States	Record daily precipitation	38.4 mm (1.5 in)	42 of 100 (Notable)
Boise City 2 E	United States	Record high minimum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Spring Branch 2SE	United States	Record daily precipitation	78.5 mm (3.1 in)	42 of 100 (Notable)
Kent	United States	Record high minimum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Bayard	United States	Record high minimum temperature	12.2 C (54.0 F)	42 of 100 (Notable)
Sta. Cruz de Tenerife	Spain	Record high minimum temperature	20.9 C (69.6 F)	41 of 100 (Notable)
Richfield	United States	Record high minimum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Wallace	United States	Record high minimum temperature	9.4 C (48.9 F)	41 of 100 (Notable)
Saigo	Japan	Record daily precipitation	48.0 mm (1.9 in)	40 of 100 (Notable)
Vilnius	Lithuania	Record low maximum temperature	2.4 C (36.3 F)	40 of 100 (Notable)
Man	Cote D'Ivoire	Record high maximum temperature	36.5 C (97.7 F)	39 of 100 (Notable)
Tenerife/Sur	Spain	Record high maximum temperature	32.1 C (89.8 F)	38 of 100 (Notable)
Honaunau 27	United States	Record daily precipitation	31.8 mm (1.3 in)	38 of 100 (Notable)
Bowman Dam	United States	Record daily precipitation	49.5 mm (1.9 in)	37 of 100 (Notable)
Lisboa Geofisica	Portugal	Record high maximum temperature	27.0 C (80.6 F)	36 of 100 (Notable)
Indio Fire STN	United States	Record high minimum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
San Luis Obispo Poly	United States	Record high minimum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Clay City 6SSE	United States	Record daily precipitation	56.4 mm (2.2 in)	35 of 100 (Notable)
Tecumseh 1W	United States	Record daily precipitation	25.4 mm (1.0 in)	35 of 100 (Notable)
Annette AP	United States	Record high maximum temperature	17.8 C (64.0 F)	35 of 100 (Notable)
Middletown	United States	Record daily precipitation	52.8 mm (2.1 in)	34 of 100 (Routine)
Neosho	United States	Record daily precipitation	59.4 mm (2.3 in)	34 of 100 (Routine)
Spavinaw	United States	Record daily precipitation	62.2 mm (2.4 in)	34 of 100 (Routine)
Fairmont	United States	Record daily precipitation	25.4 mm (1.0 in)	34 of 100 (Routine)
Middlebourne 3 ESE	United States	Record daily precipitation	27.9 mm (1.1 in)	34 of 100 (Routine)
Mae Sot	Thailand	Record low maximum temperature	29.5 C (85.1 F)	33 of 100 (Routine)
Walnut 4S	United States	Record daily precipitation	34.8 mm (1.4 in)	33 of 100 (Routine)
Clarksville Wwtp	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Annex Creek	United States	Record high maximum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Apuka	Russia	Record high maximum temperature	3.4 C (38.1 F)	32 of 100 (Routine)
Vladivostok	Russia	Record high minimum temperature	6.8 C (44.2 F)	32 of 100 (Routine)
Mwanza	Tanzania	Record daily precipitation	73.9 mm (2.9 in)	32 of 100 (Routine)
Saint Anthony	United States	Record high minimum temperature	5.0 C (41.0 F)	32 of 100 (Routine)
Puerto Montt	Chile	Record high maximum temperature	23.8 C (74.8 F)	31 of 100 (Routine)

Counts by Type and Timescale

469 records

Records set or tied on 17 April 2017 by type: Highest daily maximum 61, Lowest daily maximum 27, Highest daily minimum 179, Lowest daily minimum 36, Heaviest daily rainfall 161, Heaviest daily snowfall 1, Deepest snow cover 4.

Records on 17 April 2017 by type
Record type	Records
Highest daily maximum	61
Lowest daily maximum	27
Highest daily minimum	179
Lowest daily minimum	36
Heaviest daily rainfall	161
Heaviest daily snowfall	1
Deepest snow cover	4

Records on 17 April 2017 by timescale: all-time 0, monthly 8, daily 461.

How Much Records Were Beaten By

376 broken records

Margins by which the 376 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 116.8. Ties are not counted.

Top 20 by Significance

17 April 2017

Top 20 records on 17 April 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 April 2017	Koloa Mauka 994, US	daily rain	146.8 mm (5.8 in)	116.8 mm (4.6 in)	71 years	68 of 100 (Major)
17 April 2017	Sewanee, US	daily rain	91.4 mm (3.6 in)	42.9 mm (1.7 in)	116 years	65 of 100 (Major)
17 April 2017	Ralston, US	daily rain	92.7 mm (3.6 in)	52.8 mm (2.1 in)	48 years	59 of 100 (Notable)
17 April 2017	Quelimane, MZ	daily rain	141.0 mm (5.6 in)	107.5 mm (4.2 in)	38 years	57 of 100 (Notable)
17 April 2017	Antlers, US	daily rain	63.5 mm (2.5 in)	35.1 mm (1.4 in)	99 years	57 of 100 (Notable)
17 April 2017	La Pryor, US	daily rain	95.3 mm (3.8 in)	56.7 mm (2.2 in)	38 years	57 of 100 (Notable)
17 April 2017	Mengzi, CN	daily rain	42.7 mm (1.7 in)	23.8 mm (0.9 in)	60 years	56 of 100 (Notable)
17 April 2017	Napoopoo 28, US	daily rain	38.6 mm (1.5 in)	18.3 mm (0.7 in)	90 years	56 of 100 (Notable)
17 April 2017	Lincang, CN	monthly rain	70.9 mm (2.8 in)	16.8 mm (0.7 in)	26 years	55 of 100 (Notable)
17 April 2017	Kunming, CN	daily rain	29.2 mm (1.1 in)	16.5 mm (0.6 in)	50 years	53 of 100 (Notable)
17 April 2017	Brownfield, US	monthly rain	85.6 mm (3.4 in)	32.5 mm (1.3 in)	19 years	53 of 100 (Notable)
17 April 2017	Nevertire, AU	daily rain	30.2 mm (1.2 in)	25.2 mm (1.0 in)	24 years	51 of 100 (Notable)
17 April 2017	Woodstock, US	monthly high min	14.4 C (57.9 F)	0.5 C (0.9 F)	101 years	51 of 100 (Notable)
17 April 2017	Lijing, CN	daily rain	35.3 mm (1.4 in)	26.9 mm (1.1 in)	15 years	50 of 100 (Notable)
17 April 2017	Morgantown L&D, US	daily rain	39.1 mm (1.5 in)	14.7 mm (0.6 in)	78 years	50 of 100 (Notable)
17 April 2017	St. Brandon (St. Ra, MU	daily rain	68.1 mm (2.7 in)	51.2 mm (2.0 in)	32 years	49 of 100 (Notable)
17 April 2017	Gravette, US	daily rain	56.9 mm (2.2 in)	21.8 mm (0.9 in)	87 years	49 of 100 (Notable)
17 April 2017	Iizuka, JP	daily rain	108.0 mm (4.3 in)	68.9 mm (2.7 in)	8 years	47 of 100 (Notable)
17 April 2017	Sibu, MY	daily rain	154.7 mm (6.1 in)	115.6 mm (4.6 in)	8 years	47 of 100 (Notable)
17 April 2017	Sta. Cruz de Tenerife, ES	daily high max	31.2 C (88.2 F)	4.4 C (7.9 F)	56 years	47 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 2017

Records set or tied on this calendar date in each year from 1799 to 2017. 2017 had 469 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 2017-04-17: 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	342
20 to 40	21
40 to 60	8
60 to 80	1
80 to 100	0
100 to 120	4