Weather Records on 9 August 2018

972 weather records were set or tied worldwide on 9 August 2018. Highest significance: Rison, US.

Key Facts for 9 August 2018

On 9 August 2018, 972 weather records were set or tied at long-record stations worldwide.
706 were record highs and 45 were record lows, counting maximum and minimum temperature.
By timescale, 15 were all-time records, 62 monthly and 895 daily.
Rison set a daily record precipitation of 139.7 mm (5.5 in) on 9 August 2018.
Across 156 earlier years (1798 to 2026) the same calendar date averaged 471 records.

Record Map

972 stations

972 station records on 9 August 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 August 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rison	United States	Record daily precipitation	139.7 mm (5.5 in)	68 of 100 (Major)
Nuuanu Rsch 4 783	United States	Record daily precipitation	161.0 mm (6.3 in)	63 of 100 (Major)
Annex Creek	United States	Record daily precipitation	78.7 mm (3.1 in)	60 of 100 (Major)
Krasnoufimsk	Russia	Record daily precipitation	44.5 mm (1.8 in)	58 of 100 (Notable)
Livingston 2 NNE	United States	Record daily precipitation	82.8 mm (3.3 in)	58 of 100 (Notable)
Dongfang	China	Record daily precipitation	200.7 mm (7.9 in)	57 of 100 (Notable)
Papenburg	Germany	Record daily precipitation	36.0 mm (1.4 in)	55 of 100 (Notable)
Skagway	United States	Record daily precipitation	33.5 mm (1.3 in)	55 of 100 (Notable)
Blokzijl	Netherlands	Record daily precipitation	51.4 mm (2.0 in)	54 of 100 (Notable)
Oldeholtpade	Netherlands	Record daily precipitation	49.0 mm (1.9 in)	53 of 100 (Notable)
St. Anna Parochie	Netherlands	Record daily precipitation	53.3 mm (2.1 in)	51 of 100 (Notable)
Frederiksoord	Netherlands	Record daily precipitation	31.4 mm (1.2 in)	51 of 100 (Notable)
Tonopah	United States	Record high maximum temperature	36.1 C (97.0 F)	51 of 100 (Notable)
Susquehanna	United States	Record daily precipitation	58.2 mm (2.3 in)	51 of 100 (Notable)
Pine Bluff	United States	Record daily precipitation	54.1 mm (2.1 in)	50 of 100 (Notable)
Midland	Australia	Record daily precipitation	60.4 mm (2.4 in)	48 of 100 (Notable)
Berlin-Dahlem	Germany	Record high minimum temperature	20.8 C (69.4 F)	48 of 100 (Notable)
Hope 3 NE	United States	Record daily precipitation	106.7 mm (4.2 in)	48 of 100 (Notable)
Rohwer 2 NNE	United States	Record daily precipitation	79.0 mm (3.1 in)	47 of 100 (Notable)
Hardy	United States	Record daily precipitation	42.7 mm (1.7 in)	46 of 100 (Notable)
Lewisburg 3 N	United States	Record high minimum temperature	22.2 C (72.0 F)	46 of 100 (Notable)
Baker City AP	United States	Record high maximum temperature	42.2 C (108.0 F)	46 of 100 (Notable)
Someren	Netherlands	Record daily precipitation	43.2 mm (1.7 in)	45 of 100 (Notable)
Murfreesboro 1W	United States	Record daily precipitation	99.1 mm (3.9 in)	45 of 100 (Notable)
Hoonah	United States	Record daily precipitation	36.6 mm (1.4 in)	45 of 100 (Notable)
Drachten	Netherlands	Record daily precipitation	44.4 mm (1.7 in)	44 of 100 (Notable)
Kelso	United States	Record daily precipitation	63.0 mm (2.5 in)	44 of 100 (Notable)
Priest Rvr Exp STN	United States	Record high maximum temperature	38.9 C (102.0 F)	44 of 100 (Notable)
Laurens	United States	Record daily precipitation	30.2 mm (1.2 in)	44 of 100 (Notable)
Ulricehamn	Sweden	Record high minimum temperature	17.9 C (64.2 F)	43 of 100 (Notable)
Middleboro	United States	Record high minimum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
Toolangi (Mount St Leonard Dpi	Australia	Record daily precipitation	40.3 mm (1.6 in)	42 of 100 (Notable)
Stiege	Germany	Record high maximum temperature	32.2 C (90.0 F)	42 of 100 (Notable)
Kolka	Latvia	Record high maximum temperature	32.1 C (89.8 F)	42 of 100 (Notable)
Uppsala_Aut	Sweden	Record high minimum temperature	19.0 C (66.2 F)	42 of 100 (Notable)
Prescott 2 NNW	United States	Record daily precipitation	80.3 mm (3.2 in)	42 of 100 (Notable)
Ashton 1N	United States	Record high maximum temperature	36.1 C (97.0 F)	42 of 100 (Notable)
Tartu-Toravere	Estonia	Record high maximum temperature	32.1 C (89.8 F)	41 of 100 (Notable)
Tahoka	United States	Record daily precipitation	53.3 mm (2.1 in)	41 of 100 (Notable)
Kaena Pt 841.3	United States	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Angermunde	Germany	Record high minimum temperature	19.3 C (66.7 F)	40 of 100 (Notable)
Vasteras-Hasslo	Sweden	Record high minimum temperature	19.8 C (67.6 F)	40 of 100 (Notable)
Mukdahan	Thailand	Record daily precipitation	108.7 mm (4.3 in)	40 of 100 (Notable)
Foreman	United States	Record daily precipitation	69.9 mm (2.8 in)	40 of 100 (Notable)
Glenbrook	United States	Record low minimum temperature	1.1 C (34.0 F)	40 of 100 (Notable)
Gustavus	United States	Record daily precipitation	36.6 mm (1.4 in)	40 of 100 (Notable)
Qionghai	China	Record daily precipitation	159.5 mm (6.3 in)	39 of 100 (Notable)
Waren	Germany	Record high minimum temperature	18.5 C (65.3 F)	39 of 100 (Notable)
Gorredijk	Netherlands	Record daily precipitation	42.5 mm (1.7 in)	39 of 100 (Notable)
Dayton Mcd	United States	Record daily precipitation	34.8 mm (1.4 in)	39 of 100 (Notable)
Vardoe	Norway	Record daily precipitation	25.0 mm (1.0 in)	38 of 100 (Notable)
Halmstad	Sweden	Record high minimum temperature	18.5 C (65.3 F)	38 of 100 (Notable)
Bismarck 2 SE	United States	Record daily precipitation	91.4 mm (3.6 in)	38 of 100 (Notable)
Newport Beach Harbor	United States	Record high maximum temperature	29.4 C (84.9 F)	38 of 100 (Notable)
Kingston	United States	Record high minimum temperature	23.9 C (75.0 F)	38 of 100 (Notable)
Camarillo AP	United States	Record high maximum temperature	33.9 C (93.0 F)	38 of 100 (Notable)
Wilgarrup	Australia	Record daily precipitation	51.4 mm (2.0 in)	37 of 100 (Notable)
Langley	United States	Record daily precipitation	94.2 mm (3.7 in)	37 of 100 (Notable)
Malvern	United States	Record daily precipitation	87.9 mm (3.5 in)	37 of 100 (Notable)
Ft Bidwell	United States	Record high maximum temperature	37.8 C (100.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

972 records

Records set or tied on 9 August 2018 by type: Highest daily maximum 379, Lowest daily maximum 18, Highest daily minimum 327, Lowest daily minimum 27, Heaviest daily rainfall 221.

Records on 9 August 2018 by type
Record type	Records
Highest daily maximum	379
Lowest daily maximum	18
Highest daily minimum	327
Lowest daily minimum	27
Heaviest daily rainfall	221
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 9 August 2018 by timescale: all-time 15, monthly 62, daily 895.

How Much Records Were Beaten By

797 broken records

Margins by which the 797 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 139.4. Ties are not counted.

Top 20 by Significance

9 August 2018

Top 20 records on 9 August 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 August 2018	Rison, US	daily rain	139.7 mm (5.5 in)	107.7 mm (4.2 in)	63 years	68 of 100 (Major)
9 August 2018	Nuuanu Rsch 4 783, US	daily rain	161.0 mm (6.3 in)	71.6 mm (2.8 in)	51 years	63 of 100 (Major)
9 August 2018	Annex Creek, US	daily rain	78.7 mm (3.1 in)	41.1 mm (1.6 in)	84 years	60 of 100 (Major)
9 August 2018	Krasnoufimsk, RU	daily rain	44.5 mm (1.8 in)	21.0 mm (0.8 in)	51 years	58 of 100 (Notable)
9 August 2018	Livingston 2 NNE, US	daily rain	82.8 mm (3.3 in)	60.4 mm (2.4 in)	59 years	58 of 100 (Notable)
9 August 2018	Dongfang, CN	daily rain	200.7 mm (7.9 in)	139.4 mm (5.5 in)	60 years	57 of 100 (Notable)
9 August 2018	Papenburg, DE	daily rain	36.0 mm (1.4 in)	22.1 mm (0.9 in)	36 years	55 of 100 (Notable)
9 August 2018	Skagway, US	daily rain	33.5 mm (1.3 in)	11.7 mm (0.5 in)	84 years	55 of 100 (Notable)
9 August 2018	Blokzijl, NL	daily rain	51.4 mm (2.0 in)	20.2 mm (0.8 in)	67 years	54 of 100 (Notable)
9 August 2018	Oldeholtpade, NL	daily rain	49.0 mm (1.9 in)	31.2 mm (1.2 in)	25 years	53 of 100 (Notable)
9 August 2018	St. Anna Parochie, NL	daily rain	53.3 mm (2.1 in)	32.6 mm (1.3 in)	16 years	51 of 100 (Notable)
9 August 2018	Frederiksoord, NL	daily rain	31.4 mm (1.2 in)	17.7 mm (0.7 in)	60 years	51 of 100 (Notable)
9 August 2018	Tonopah, US	monthly high max	36.1 C (97.0 F)	0.5 C (0.9 F)	116 years	51 of 100 (Notable)
9 August 2018	Susquehanna, US	daily rain	58.2 mm (2.3 in)	33.3 mm (1.3 in)	48 years	51 of 100 (Notable)
9 August 2018	Pine Bluff, US	daily rain	54.1 mm (2.1 in)	17.3 mm (0.7 in)	105 years	50 of 100 (Notable)
9 August 2018	Midland, AU	monthly rain	60.4 mm (2.4 in)	6.8 mm (0.27 in)	72 years	48 of 100 (Notable)
9 August 2018	Berlin-Dahlem, DE	daily high min	20.8 C (69.4 F)	2.5 C (4.5 F)	141 years	48 of 100 (Notable)
9 August 2018	Hope 3 NE, US	daily rain	106.7 mm (4.2 in)	50.6 mm (2.0 in)	33 years	48 of 100 (Notable)
9 August 2018	Rohwer 2 NNE, US	daily rain	79.0 mm (3.1 in)	53.9 mm (2.1 in)	33 years	47 of 100 (Notable)
9 August 2018	Hardy, US	daily rain	42.7 mm (1.7 in)	12.0 mm (0.5 in)	112 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

1798 to 2018

Records set or tied on this calendar date in each year from 1798 to 2018. 2018 had 972 records.

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

Records on 08-09 in each year
Year	Records
1798	2
1800	1
1838	1
1845	3
1856	1
1859	3
1861	1
1863	2
1868	1
1870	1
1871	1
1873	1
1875	1
1878	1
1881	3
1884	2
1886	1
1887	1
1888	1
1889	1
1890	1
1891	4
1892	4
1893	3
1894	3
1895	1
1896	3
1897	7
1898	12
1899	4
1900	8
1901	3
1902	3
1903	6
1904	9
1905	5
1906	15
1907	9
1908	9
1909	51
1910	16
1911	44
1912	47
1913	76
1914	21
1915	61
1916	37
1917	46
1918	210
1919	49
1920	289
1921	36
1922	70
1923	73
1924	143
1925	307
1926	142
1927	391
1928	220
1929	127
1930	570
1931	399
1932	194
1933	250
1934	654
1935	587
1936	519
1937	351
1938	379
1939	480
1940	455
1941	372
1942	527
1943	366
1944	647
1945	365
1946	307
1947	544
1948	440
1949	715
1950	407
1951	405
1952	317
1953	363
1954	377
1955	433
1956	278
1957	347
1958	417
1959	453
1960	459
1961	347
1962	636
1963	500
1964	755
1965	632
1966	568
1967	457
1968	1,037
1969	527
1970	751
1971	543
1972	1,089
1973	547
1974	660
1975	790
1976	883
1977	453
1978	784
1979	630
1980	945
1981	941
1982	935
1983	839
1984	683
1985	714
1986	509
1987	927
1988	625
1989	2,082
1990	799
1991	988
1992	1,699
1993	702
1994	1,097
1995	1,417
1996	864
1997	1,446
1998	969
1999	1,370
2000	1,237
2001	1,485
2002	1,167
2003	1,344
2004	941
2005	1,001
2006	828
2007	1,687
2008	667
2009	1,028
2010	1,393
2011	1,177
2012	843
2013	761
2014	531
2015	595
2016	634
2017	773
2018	972
2019	717
2020	643
2021	523
2022	793
2023	820
2024	952
2025	799
2026	1,019

Download the Data

Data for records on 2018-08-09: 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	763
20 to 40	21
40 to 60	5
60 to 80	6
80 to 100	0
100 to 120	1
120 to 140	1