Weather Records on 17 August 2026

535 weather records were set or tied worldwide on 17 August 2026. Highest significance: Pohnpei WSO, FM.

Key Facts for 17 August 2026

On 17 August 2026, 535 weather records were set or tied at long-record stations worldwide.
408 were record highs and 26 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 15 monthly and 519 daily.
Pohnpei WSO set a daily record precipitation of 158.0 mm (6.2 in) on 17 August 2026.
Across 162 earlier years (1797 to 2025) the same calendar date averaged 473 records.

Record Map

535 stations

535 station records on 17 August 2026 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 2026: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pohnpei WSO	Federated States of Micronesia	Record daily precipitation	158.0 mm (6.2 in)	68 of 100 (Major)
Tadotsu	Japan	Record daily precipitation	148.0 mm (5.8 in)	62 of 100 (Major)
Makaweli 965	United States	Record low maximum temperature	26.7 C (80.1 F)	61 of 100 (Major)
Puhi 1013	United States	Record daily precipitation	64.8 mm (2.6 in)	60 of 100 (Major)
Wakamatsu	Japan	Record daily precipitation	270.0 mm (10.6 in)	57 of 100 (Notable)
Tajima	Japan	Record daily precipitation	74.0 mm (2.9 in)	57 of 100 (Notable)
Clarksburg Benedum AP	United States	Record daily precipitation	52.6 mm (2.1 in)	57 of 100 (Notable)
Pueblo Mem AP	United States	Record daily precipitation	40.6 mm (1.6 in)	57 of 100 (Notable)
Koloa 936	United States	Record daily precipitation	63.5 mm (2.5 in)	55 of 100 (Notable)
Fordyce	United States	Record high minimum temperature	27.8 C (82.0 F)	54 of 100 (Notable)
Lulea Flygplats	Sweden	Record daily precipitation	52.5 mm (2.1 in)	52 of 100 (Notable)
Rodupp	Sweden	Record daily precipitation	56.2 mm (2.2 in)	52 of 100 (Notable)
Waihee 837.5	United States	Record daily precipitation	61.0 mm (2.4 in)	52 of 100 (Notable)
Kangos	Sweden	Record daily precipitation	43.0 mm (1.7 in)	51 of 100 (Notable)
Hakodate	Japan	Record daily precipitation	243.5 mm (9.6 in)	49 of 100 (Notable)
Mito	Japan	Record daily precipitation	205.5 mm (8.1 in)	49 of 100 (Notable)
Brannberg_D	Sweden	Record daily precipitation	57.4 mm (2.3 in)	49 of 100 (Notable)
Gallivare_A	Sweden	Record daily precipitation	28.8 mm (1.1 in)	48 of 100 (Notable)
Boden	Sweden	Record daily precipitation	55.0 mm (2.2 in)	47 of 100 (Notable)
Logan	United States	Record daily precipitation	39.6 mm (1.6 in)	46 of 100 (Notable)
Aiea Hts 764.6	United States	Record daily precipitation	49.0 mm (1.9 in)	45 of 100 (Notable)
Kapaka Farm 904.1	United States	Record daily precipitation	78.7 mm (3.1 in)	44 of 100 (Notable)
Kii-Kahuku 911	United States	Record daily precipitation	45.2 mm (1.8 in)	44 of 100 (Notable)
Donaldsonville 4 SW	United States	Record high minimum temperature	25.6 C (78.1 F)	43 of 100 (Notable)
Ulleungdo	Korea, South	Record daily precipitation	142.4 mm (5.6 in)	42 of 100 (Notable)
Saltillo	Mexico	Record high minimum temperature	23.8 C (74.8 F)	42 of 100 (Notable)
Pocahontas 1	United States	Record high minimum temperature	25.0 C (77.0 F)	42 of 100 (Notable)
Water Valley	United States	Record high minimum temperature	25.6 C (78.1 F)	42 of 100 (Notable)
Woodward	United States	Record daily precipitation	28.4 mm (1.1 in)	42 of 100 (Notable)
Utwa	Federated States of Micronesia	Record daily precipitation	102.9 mm (4.1 in)	41 of 100 (Notable)
Saltillo	Mexico	Record high maximum temperature	39.4 C (102.9 F)	41 of 100 (Notable)
Tarendo	Sweden	Record daily precipitation	38.5 mm (1.5 in)	41 of 100 (Notable)
Quicksand	United States	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Smithfield	United States	Record high maximum temperature	38.9 C (102.0 F)	41 of 100 (Notable)
Bucyrus	United States	Record high minimum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
Cookeville	United States	Record high minimum temperature	22.2 C (72.0 F)	41 of 100 (Notable)
Naryn	Kyrgyzstan	Record high minimum temperature	17.2 C (63.0 F)	40 of 100 (Notable)
Koloa Mauka 994	United States	Record daily precipitation	71.1 mm (2.8 in)	39 of 100 (Notable)
Lakeland Linder Rgnl AP	United States	Record high minimum temperature	26.7 C (80.1 F)	39 of 100 (Notable)
Lead Hill	United States	Record high minimum temperature	23.9 C (75.0 F)	38 of 100 (Notable)
Samburg Wr	United States	Record high minimum temperature	25.6 C (78.1 F)	38 of 100 (Notable)
Marysville	United States	Record high minimum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Springfield Exp STN	United States	Record high minimum temperature	25.0 C (77.0 F)	37 of 100 (Notable)
Fajardo	Puerto Rico [United States]	Record high minimum temperature	27.2 C (81.0 F)	36 of 100 (Notable)
Wynne	United States	Record high minimum temperature	26.7 C (80.1 F)	36 of 100 (Notable)
Loxahatchee Nwr	United States	Record high maximum temperature	38.3 C (100.9 F)	36 of 100 (Notable)
Gravette	United States	Record high minimum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Pleasant Hill	United States	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Dickson	United States	Record high minimum temperature	23.3 C (73.9 F)	35 of 100 (Notable)
Tampa Intl AP	United States	Record high minimum temperature	27.2 C (81.0 F)	35 of 100 (Notable)
Saittarova_D	Sweden	Record daily precipitation	37.2 mm (1.5 in)	34 of 100 (Routine)
Kurgan-Tyube	Tajikistan	Record high minimum temperature	22.6 C (72.7 F)	34 of 100 (Routine)
Jamestown 2 NW	United States	Record daily precipitation	34.3 mm (1.4 in)	34 of 100 (Routine)
Lake Charles Chenault	United States	Record high minimum temperature	26.4 C (79.5 F)	34 of 100 (Routine)
Porto	Portugal	Record high maximum temperature	36.6 C (97.9 F)	33 of 100 (Routine)
Greensboro	United States	Record high maximum temperature	40.0 C (104.0 F)	33 of 100 (Routine)
Indio Fire STN	United States	Record high maximum temperature	46.1 C (115.0 F)	33 of 100 (Routine)
Mill Gap	United States	Record daily precipitation	37.8 mm (1.5 in)	33 of 100 (Routine)
Jacksonville	United States	Record high minimum temperature	26.1 C (79.0 F)	33 of 100 (Routine)
Monroe Rgnl AP	United States	Record high maximum temperature	40.6 C (105.1 F)	33 of 100 (Routine)

Counts by Type and Timescale

535 records

Records set or tied on 17 August 2026 by type: Highest daily maximum 107, Lowest daily maximum 12, Highest daily minimum 301, Lowest daily minimum 14, Heaviest daily rainfall 101.

Records on 17 August 2026 by type
Record type	Records
Highest daily maximum	107
Lowest daily maximum	12
Highest daily minimum	301
Lowest daily minimum	14
Heaviest daily rainfall	101
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 2026 by timescale: all-time 1, monthly 15, daily 519.

How Much Records Were Beaten By

362 broken records

Margins by which the 362 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 144.4. Ties are not counted.

Top 20 by Significance

17 August 2026

Top 20 records on 17 August 2026 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 2026	Pohnpei WSO, FM	daily rain	158.0 mm (6.2 in)	99.1 mm (3.9 in)	71 years	68 of 100 (Major)
17 August 2026	Tadotsu, JP	daily rain	148.0 mm (5.8 in)	102.0 mm (4.0 in)	51 years	62 of 100 (Major)
17 August 2026	Makaweli 965, US	daily low max	26.7 C (80.1 F)	2.2 C (4.0 F)	115 years	61 of 100 (Major)
17 August 2026	Puhi 1013, US	daily rain	64.8 mm (2.6 in)	27.2 mm (1.1 in)	60 years	60 of 100 (Major)
17 August 2026	Wakamatsu, JP	monthly rain	270.0 mm (10.6 in)	129.0 mm (5.1 in)	0 years	57 of 100 (Notable)
17 August 2026	Tajima, JP	daily rain	74.0 mm (2.9 in)	49.3 mm (1.9 in)	63 years	57 of 100 (Notable)
17 August 2026	Clarksburg Benedum AP, US	daily rain	52.6 mm (2.1 in)	29.0 mm (1.1 in)	79 years	57 of 100 (Notable)
17 August 2026	Pueblo Mem AP, US	daily rain	40.6 mm (1.6 in)	28.2 mm (1.1 in)	64 years	57 of 100 (Notable)
17 August 2026	Koloa 936, US	daily rain	63.5 mm (2.5 in)	26.4 mm (1.0 in)	44 years	55 of 100 (Notable)
17 August 2026	Fordyce, US	monthly high min	27.8 C (82.0 F)	1.1 C (2.0 F)	115 years	54 of 100 (Notable)
17 August 2026	Lulea Flygplats, SE	daily rain	52.5 mm (2.1 in)	25.6 mm (1.0 in)	44 years	52 of 100 (Notable)
17 August 2026	Rodupp, SE	daily rain	56.2 mm (2.2 in)	42.3 mm (1.7 in)	32 years	52 of 100 (Notable)
17 August 2026	Waihee 837.5, US	daily rain	61.0 mm (2.4 in)	46.5 mm (1.8 in)	28 years	52 of 100 (Notable)
17 August 2026	Kangos, SE	daily rain	43.0 mm (1.7 in)	21.7 mm (0.9 in)	48 years	51 of 100 (Notable)
17 August 2026	Hakodate, JP	daily rain	243.5 mm (9.6 in)	144.4 mm (5.7 in)	8 years	49 of 100 (Notable)
17 August 2026	Mito, JP	daily rain	205.5 mm (8.1 in)	102.9 mm (4.1 in)	9 years	49 of 100 (Notable)
17 August 2026	Brannberg_D, SE	daily rain	57.4 mm (2.3 in)	43.6 mm (1.7 in)	4 years	49 of 100 (Notable)
17 August 2026	Gallivare_A, SE	daily rain	28.8 mm (1.1 in)	5.3 mm (0.21 in)	135 years	48 of 100 (Notable)
17 August 2026	Boden, SE	monthly rain	55.0 mm (2.2 in)	9.6 mm (0.38 in)	51 years	47 of 100 (Notable)
17 August 2026	Logan, US	daily rain	39.6 mm (1.6 in)	10.6 mm (0.4 in)	92 years	46 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

1797 to 2026

Records set or tied on this calendar date in each year from 1797 to 2026. 2026 had 535 records.

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

Records on 08-17 in each year
Year	Records
1797	2
1802	2
1820	2
1837	1
1838	2
1841	2
1842	1
1845	2
1853	1
1854	1
1856	1
1857	1
1861	3
1862	1
1867	1
1868	3
1869	1
1872	1
1875	2
1876	5
1879	1
1881	1
1882	1
1883	2
1885	3
1886	1
1888	5
1891	1
1892	3
1893	2
1894	3
1895	2
1896	3
1897	1
1898	5
1899	8
1900	3
1901	14
1902	7
1903	6
1904	2
1905	11
1906	28
1907	9
1908	26
1909	24
1910	17
1911	18
1912	31
1913	79
1914	41
1915	28
1916	33
1917	35
1918	112
1919	37
1920	110
1921	37
1922	169
1923	161
1924	171
1925	130
1926	182
1927	228
1928	131
1929	243
1930	138
1931	302
1932	360
1933	260
1934	377
1935	437
1936	670
1937	726
1938	466
1939	364
1940	341
1941	378
1942	461
1943	743
1944	531
1945	387
1946	433
1947	682
1948	475
1949	371
1950	522
1951	413
1952	470
1953	345
1954	685
1955	465
1956	407
1957	504
1958	519
1959	543
1960	533
1961	998
1962	445
1963	650
1964	410
1965	641
1966	496
1967	679
1968	953
1969	593
1970	467
1971	447
1972	1,044
1973	750
1974	582
1975	612
1976	797
1977	1,216
1978	814
1979	1,464
1980	895
1981	1,112
1982	554
1983	1,574
1984	726
1985	948
1986	916
1987	1,150
1988	1,608
1989	687
1990	949
1991	560
1992	1,813
1993	803
1994	1,038
1995	1,724
1996	752
1997	1,544
1998	1,003
1999	697
2000	994
2001	1,101
2002	1,266
2003	948
2004	1,046
2005	722
2006	814
2007	1,646
2008	1,301
2009	922
2010	1,105
2011	956
2012	1,215
2013	802
2014	997
2015	890
2016	748
2017	544
2018	518
2019	467
2020	1,529
2021	800
2022	1,428
2023	1,032
2024	740
2025	538
2026	535

Download the Data

Data for records on 2026-08-17: 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Margin	Records
0 to 20	341
20 to 40	10
40 to 60	4
60 to 80	2
80 to 100	1
100 to 120	2
120 to 140	1
140 to 160	1