Weather Records on 11 August 2017

619 weather records were set or tied worldwide on 11 August 2017. Highest significance: Fossil, US.

Key Facts for 11 August 2017

On 11 August 2017, 619 weather records were set or tied at long-record stations worldwide.
269 were record highs and 170 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 16 monthly and 601 daily.
Fossil set an all-time record daily precipitation of 106.7 mm (4.2 in) on 11 August 2017.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 460 records.

Record Map

619 stations

619 station records on 11 August 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fossil	United States	Record daily precipitation	106.7 mm (4.2 in)	89 of 100 (Exceptional)
Bridgeport 5 NW	United States	Record daily precipitation	86.9 mm (3.4 in)	71 of 100 (Major)
Troy	United States	Record daily precipitation	103.6 mm (4.1 in)	65 of 100 (Major)
Apache	United States	Record daily precipitation	65.3 mm (2.6 in)	65 of 100 (Major)
Giessen/Wettenberg	Germany	Record daily precipitation	53.3 mm (2.1 in)	64 of 100 (Major)
Baden-Baden-Geroldsau	Germany	Record daily precipitation	59.9 mm (2.4 in)	63 of 100 (Major)
Villanueva	United States	Record daily precipitation	53.3 mm (2.1 in)	59 of 100 (Notable)
Biedenkopf	Germany	Record daily precipitation	54.9 mm (2.2 in)	56 of 100 (Notable)
Alsfeld-Eifa	Germany	Record daily precipitation	39.5 mm (1.6 in)	55 of 100 (Notable)
Bad Hersfeld	Germany	Record daily precipitation	35.8 mm (1.4 in)	54 of 100 (Notable)
Melsungen-Burstoss	Germany	Record daily precipitation	42.7 mm (1.7 in)	54 of 100 (Notable)
Dillenburg	Germany	Record daily precipitation	45.0 mm (1.8 in)	54 of 100 (Notable)
Oak Knoll W C	United States	Record daily precipitation	27.2 mm (1.1 in)	53 of 100 (Notable)
Pasighat	India	Record daily precipitation	228.1 mm (9.0 in)	52 of 100 (Notable)
Willow Rsvr	United States	Record daily precipitation	66.5 mm (2.6 in)	51 of 100 (Notable)
Gilserberg-Moischeid	Germany	Record daily precipitation	45.0 mm (1.8 in)	49 of 100 (Notable)
Malacca	Malaysia	Record daily precipitation	151.9 mm (6.0 in)	49 of 100 (Notable)
Kleiner Feldberg/Taunus	Germany	Record daily precipitation	39.7 mm (1.6 in)	46 of 100 (Notable)
Plant City	United States	Record high maximum temperature	37.2 C (99.0 F)	46 of 100 (Notable)
Lippstadt-Bokenforde	Germany	Record daily precipitation	36.6 mm (1.4 in)	45 of 100 (Notable)
Bad-Stunzel Berleburg	Germany	Record daily precipitation	44.9 mm (1.8 in)	45 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record low maximum temperature	0.2 C (32.4 F)	45 of 100 (Notable)
Neosho	United States	Record daily precipitation	87.6 mm (3.4 in)	45 of 100 (Notable)
Frankfurt/Main-Westend	Germany	Record daily precipitation	29.9 mm (1.2 in)	44 of 100 (Notable)
Big Bay 1NW	United States	Record daily precipitation	56.4 mm (2.2 in)	44 of 100 (Notable)
Erick	United States	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Rogersville 1 NE	United States	Record low maximum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Rastatt	Germany	Record daily precipitation	40.8 mm (1.6 in)	43 of 100 (Notable)
Makaweli 965	United States	Record high minimum temperature	25.0 C (77.0 F)	43 of 100 (Notable)
Birx/Rhon	Germany	Record daily precipitation	28.3 mm (1.1 in)	42 of 100 (Notable)
Rock Mills	United States	Record daily precipitation	105.7 mm (4.2 in)	42 of 100 (Notable)
Sedan	United States	Record daily precipitation	61.7 mm (2.4 in)	42 of 100 (Notable)
Saarbrucken/Ensheim	Germany	Record daily precipitation	29.6 mm (1.2 in)	41 of 100 (Notable)
Asslar Klein-Altenstadten	Germany	Record daily precipitation	61.6 mm (2.4 in)	41 of 100 (Notable)
Saint Johns	United States	Record low maximum temperature	23.3 C (73.9 F)	41 of 100 (Notable)
Marshall	United States	Record low maximum temperature	23.9 C (75.0 F)	41 of 100 (Notable)
Hanna 4 SSE	United States	Record daily precipitation	68.6 mm (2.7 in)	41 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record low maximum temperature	14.6 C (58.3 F)	40 of 100 (Notable)
Hohenpeissenberg	Germany	Record low maximum temperature	10.7 C (51.3 F)	40 of 100 (Notable)
Altastenberg	Germany	Record daily precipitation	44.3 mm (1.7 in)	40 of 100 (Notable)
Twistetal-Muhlhausen	Germany	Record daily precipitation	34.0 mm (1.3 in)	40 of 100 (Notable)
Bad Marienberg	Germany	Record daily precipitation	46.6 mm (1.8 in)	40 of 100 (Notable)
Amga	Russia	Record daily precipitation	36.1 mm (1.4 in)	40 of 100 (Notable)
Sayre	United States	Record daily precipitation	63.5 mm (2.5 in)	40 of 100 (Notable)
Hobart Muni AP	United States	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Aschaffenburg	Germany	Record daily precipitation	28.8 mm (1.1 in)	39 of 100 (Notable)
Three Lynx	United States	Record high minimum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Grundau-Breitenborn	Germany	Record daily precipitation	30.4 mm (1.2 in)	38 of 100 (Notable)
Bentley	United States	Record daily precipitation	80.5 mm (3.2 in)	38 of 100 (Notable)
Poplar Bluff	United States	Record low maximum temperature	26.1 C (79.0 F)	38 of 100 (Notable)
Golden	United States	Record daily precipitation	31.0 mm (1.2 in)	38 of 100 (Notable)
Jarud Qi	China	Record daily precipitation	48.3 mm (1.9 in)	37 of 100 (Notable)
Kr. Marburg-Biedenkopf Colbe	Germany	Record daily precipitation	62.1 mm (2.4 in)	37 of 100 (Notable)
Astana	Kazakhstan	Record low maximum temperature	16.0 C (60.8 F)	37 of 100 (Notable)
Sotchi	Russia	Record high maximum temperature	34.1 C (93.4 F)	37 of 100 (Notable)
Galesburg 1NNE	United States	Record daily precipitation	88.9 mm (3.5 in)	37 of 100 (Notable)
Wakeeney	United States	Record daily precipitation	46.7 mm (1.8 in)	37 of 100 (Notable)
Bunkie	United States	Record daily precipitation	53.3 mm (2.1 in)	37 of 100 (Notable)
Celle	Germany	Record daily precipitation	33.1 mm (1.3 in)	36 of 100 (Notable)
Aldan	Russia	Record high minimum temperature	18.6 C (65.5 F)	36 of 100 (Notable)

Counts by Type and Timescale

619 records

Records set or tied on 11 August 2017 by type: Highest daily maximum 95, Lowest daily maximum 140, Highest daily minimum 174, Lowest daily minimum 30, Heaviest daily rainfall 180.

Records on 11 August 2017 by type
Record type	Records
Highest daily maximum	95
Lowest daily maximum	140
Highest daily minimum	174
Lowest daily minimum	30
Heaviest daily rainfall	180
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 2017 by timescale: all-time 2, monthly 16, daily 601.

How Much Records Were Beaten By

510 broken records

Margins by which the 510 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 87.1. Ties are not counted.

Top 20 by Significance

11 August 2017

Top 20 records on 11 August 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 2017	Fossil, US	all-time rain	106.7 mm (4.2 in)	55.9 mm (2.2 in)	66 years	89 of 100 (Exceptional)
11 August 2017	Bridgeport 5 NW, US	daily rain	86.9 mm (3.4 in)	48.8 mm (1.9 in)	80 years	71 of 100 (Major)
11 August 2017	Troy, US	daily rain	103.6 mm (4.1 in)	49.5 mm (1.9 in)	80 years	65 of 100 (Major)
11 August 2017	Apache, US	daily rain	65.3 mm (2.6 in)	36.3 mm (1.4 in)	100 years	65 of 100 (Major)
11 August 2017	Giessen/Wettenberg, DE	daily rain	53.3 mm (2.1 in)	31.9 mm (1.3 in)	59 years	64 of 100 (Major)
11 August 2017	Baden-Baden-Geroldsau, DE	daily rain	59.9 mm (2.4 in)	36.0 mm (1.4 in)	59 years	63 of 100 (Major)
11 August 2017	Villanueva, US	daily rain	53.3 mm (2.1 in)	30.4 mm (1.2 in)	64 years	59 of 100 (Notable)
11 August 2017	Biedenkopf, DE	daily rain	54.9 mm (2.2 in)	15.5 mm (0.6 in)	84 years	56 of 100 (Notable)
11 August 2017	Alsfeld-Eifa, DE	daily rain	39.5 mm (1.6 in)	32.8 mm (1.3 in)	36 years	55 of 100 (Notable)
11 August 2017	Bad Hersfeld, DE	daily rain	35.8 mm (1.4 in)	19.3 mm (0.8 in)	52 years	54 of 100 (Notable)
11 August 2017	Melsungen-Burstoss, DE	daily rain	42.7 mm (1.7 in)	21.9 mm (0.9 in)	52 years	54 of 100 (Notable)
11 August 2017	Dillenburg, DE	daily rain	45.0 mm (1.8 in)	14.7 mm (0.6 in)	84 years	54 of 100 (Notable)
11 August 2017	Oak Knoll W C, US	daily rain	27.2 mm (1.1 in)	19.6 mm (0.8 in)	67 years	53 of 100 (Notable)
11 August 2017	Pasighat, IN	daily rain	228.1 mm (9.0 in)	87.1 mm (3.4 in)	71 years	52 of 100 (Notable)
11 August 2017	Willow Rsvr, US	daily rain	66.5 mm (2.6 in)	41.6 mm (1.6 in)	34 years	51 of 100 (Notable)
11 August 2017	Gilserberg-Moischeid, DE	daily rain	45.0 mm (1.8 in)	11.1 mm (0.4 in)	84 years	49 of 100 (Notable)
11 August 2017	Malacca, MY	monthly rain	151.9 mm (6.0 in)	40.9 mm (1.6 in)	34 years	49 of 100 (Notable)
11 August 2017	Kleiner Feldberg/Taunus, DE	daily rain	39.7 mm (1.6 in)	11.5 mm (0.5 in)	79 years	46 of 100 (Notable)
11 August 2017	Plant City, US	daily high max	37.2 C (99.0 F)	1.1 C (2.0 F)	114 years	46 of 100 (Notable)
11 August 2017	Lippstadt-Bokenforde, DE	daily rain	36.6 mm (1.4 in)	29.1 mm (1.1 in)	12 years	45 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

1793 to 2017

Records set or tied on this calendar date in each year from 1793 to 2017. 2017 had 619 records.

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

Records on 08-11 in each year
Year	Records
1793	1
1796	1
1811	1
1815	2
1838	1
1839	1
1841	1
1851	1
1855	1
1858	1
1861	2
1862	1
1863	1
1864	6
1865	1
1866	6
1869	4
1871	1
1875	1
1879	2
1881	1
1883	1
1885	1
1888	1
1889	4
1890	4
1891	1
1892	4
1893	1
1894	1
1895	2
1896	5
1897	3
1898	2
1899	3
1900	4
1901	4
1902	13
1903	12
1904	19
1905	9
1906	6
1907	8
1908	10
1909	41
1910	9
1911	24
1912	46
1913	43
1914	26
1915	27
1916	64
1917	217
1918	29
1919	18
1920	54
1921	201
1922	98
1923	80
1924	149
1925	219
1926	140
1927	190
1928	174
1929	354
1930	471
1931	453
1932	281
1933	416
1934	620
1935	499
1936	541
1937	356
1938	315
1939	389
1940	359
1941	807
1942	390
1943	345
1944	936
1945	401
1946	419
1947	709
1948	306
1949	471
1950	320
1951	296
1952	417
1953	283
1954	536
1955	319
1956	457
1957	305
1958	494
1959	337
1960	461
1961	429
1962	662
1963	493
1964	677
1965	793
1966	1,037
1967	1,071
1968	619
1969	533
1970	526
1971	711
1972	823
1973	451
1974	596
1975	753
1976	529
1977	845
1978	433
1979	797
1980	929
1981	645
1982	1,232
1983	1,095
1984	822
1985	804
1986	563
1987	885
1988	1,119
1989	983
1990	760
1991	822
1992	928
1993	840
1994	1,173
1995	1,324
1996	1,147
1997	1,512
1998	1,232
1999	1,152
2000	924
2001	811
2002	1,152
2003	1,601
2004	1,478
2005	1,031
2006	896
2007	1,428
2008	945
2009	836
2010	2,289
2011	1,106
2012	953
2013	470
2014	556
2015	696
2016	1,340
2017	619
2018	861
2019	758
2020	688
2021	834
2022	661
2023	757
2024	643
2025	722
2026	765

Download the Data

Data for records on 2017-08-11: 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 2026-10-16 (16 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	478
20 to 40	22
40 to 60	8
60 to 80	1
80 to 100	1