Weather Records on 11 August 1985

804 weather records were set or tied worldwide on 11 August 1985. Highest significance: Hamilton, US.

Key Facts for 11 August 1985

On 11 August 1985, 804 weather records were set or tied at long-record stations worldwide.
207 were record highs and 439 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 20 monthly and 782 daily.
Hamilton set a daily record low maximum temperature of 13.9 C (57.0 F) on 11 August 1985.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

804 stations

804 station records on 11 August 1985 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 1985: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hamilton	United States	Record low maximum temperature	13.9 C (57.0 F)	52 of 100 (Notable)
Holter Dam	United States	Record daily precipitation	29.0 mm (1.1 in)	52 of 100 (Notable)
Butte Bert Mooney AP	United States	Record low maximum temperature	9.4 C (48.9 F)	52 of 100 (Notable)
Ternej	Russia	Record daily precipitation	172.8 mm (6.8 in)	51 of 100 (Notable)
Rudnaja Pristan	Russia	Record daily precipitation	168.5 mm (6.6 in)	51 of 100 (Notable)
Valsjon	Sweden	Record daily precipitation	41.2 mm (1.6 in)	48 of 100 (Notable)
Brookings	United States	Record high maximum temperature	38.3 C (100.9 F)	48 of 100 (Notable)
Augusta	United States	Record daily precipitation	29.0 mm (1.1 in)	46 of 100 (Notable)
Ogden Pioneer Ph	United States	Record low maximum temperature	21.7 C (71.1 F)	46 of 100 (Notable)
Porjus	Sweden	Record daily precipitation	65.2 mm (2.6 in)	45 of 100 (Notable)
Wells	United States	Record low maximum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
Lewistown AP	United States	Record low maximum temperature	12.2 C (54.0 F)	42 of 100 (Notable)
Fenn Rs	United States	Record low maximum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
Dillon U of Montana Western	United States	Record low maximum temperature	16.1 C (61.0 F)	40 of 100 (Notable)
Combolcha	Ethiopia	Record low minimum temperature	5.0 C (41.0 F)	39 of 100 (Notable)
Divide	United States	Record low maximum temperature	11.1 C (52.0 F)	39 of 100 (Notable)
Fairfield	United States	Record daily precipitation	28.4 mm (1.1 in)	39 of 100 (Notable)
Winifred	United States	Record daily precipitation	25.9 mm (1.0 in)	39 of 100 (Notable)
Wisdom	United States	Record low maximum temperature	12.2 C (54.0 F)	39 of 100 (Notable)
Cascade 1 NW	United States	Record low maximum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Ft Hall 1 NNE	United States	Record low maximum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Boulder	United States	Record low maximum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Seneca	United States	Record low maximum temperature	11.7 C (53.1 F)	38 of 100 (Notable)
Kirov	Russia	Record high minimum temperature	19.7 C (67.5 F)	37 of 100 (Notable)
Cedarville	United States	Record low minimum temperature	3.3 C (37.9 F)	37 of 100 (Notable)
McCall	United States	Record low maximum temperature	13.9 C (57.0 F)	37 of 100 (Notable)
Warren	United States	Record low maximum temperature	12.2 C (54.0 F)	37 of 100 (Notable)
Roseau	United States	Record low maximum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Judith Gap	United States	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Cuero	United States	Record low minimum temperature	16.7 C (62.1 F)	37 of 100 (Notable)
Lowman	United States	Record low maximum temperature	19.4 C (66.9 F)	36 of 100 (Notable)
Weiser	United States	Record low maximum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Lincoln Rs	United States	Record low maximum temperature	9.4 C (48.9 F)	36 of 100 (Notable)
Seeley Lake Rs	United States	Record low maximum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Stevensville	United States	Record low maximum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
O'Neill	United States	Record daily precipitation	63.5 mm (2.5 in)	36 of 100 (Notable)
St. Petersburg	Russia	Record high maximum temperature	29.8 C (85.6 F)	35 of 100 (Notable)
Palkem	Sweden	Record daily precipitation	62.1 mm (2.4 in)	35 of 100 (Notable)
American Falls 6 NE	United States	Record low maximum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Glenns Ferry	United States	Record low maximum temperature	23.9 C (75.0 F)	35 of 100 (Notable)
Porthill	United States	Record low minimum temperature	4.4 C (39.9 F)	35 of 100 (Notable)
Indianola 1SW	United States	Record low minimum temperature	7.2 C (45.0 F)	35 of 100 (Notable)
Marshalltown	United States	Record low minimum temperature	6.7 C (44.1 F)	35 of 100 (Notable)
Gibson Dam	United States	Record daily precipitation	26.9 mm (1.1 in)	35 of 100 (Notable)
Holter Dam	United States	Record low maximum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Norris Madison Pwr House	United States	Record low maximum temperature	16.7 C (62.1 F)	35 of 100 (Notable)
Winifred	United States	Record low maximum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Niznij Novgorod	Russia	Record high minimum temperature	21.0 C (69.8 F)	34 of 100 (Routine)
Oakley	United States	Record low maximum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Keosauqua	United States	Record low minimum temperature	7.2 C (45.0 F)	34 of 100 (Routine)
Princeton	United States	Record low minimum temperature	9.4 C (48.9 F)	34 of 100 (Routine)
Augusta	United States	Record low maximum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Ennis	United States	Record low maximum temperature	13.9 C (57.0 F)	34 of 100 (Routine)
Roy 8 NE	United States	Record daily precipitation	26.2 mm (1.0 in)	34 of 100 (Routine)
Aurora	United States	Record low minimum temperature	8.3 C (46.9 F)	34 of 100 (Routine)
Keene	United States	Record high minimum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Winnemucca AP	United States	Record low minimum temperature	2.2 C (36.0 F)	34 of 100 (Routine)
Bliss 4 NW	United States	Record low maximum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Chazy	United States	Record high minimum temperature	21.7 C (71.1 F)	33 of 100 (Routine)
Hartford-Bradley Intl AP	United States	Record daily precipitation	69.3 mm (2.7 in)	33 of 100 (Routine)

Counts by Type and Timescale

804 records

Records set or tied on 11 August 1985 by type: Highest daily maximum 78, Lowest daily maximum 220, Highest daily minimum 129, Lowest daily minimum 219, Heaviest daily rainfall 157, Heaviest daily snowfall 1.

Records on 11 August 1985 by type
Record type	Records
Highest daily maximum	78
Lowest daily maximum	220
Highest daily minimum	129
Lowest daily minimum	219
Heaviest daily rainfall	157
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 11 August 1985 by timescale: all-time 2, monthly 20, daily 782.

How Much Records Were Beaten By

646 broken records

Margins by which the 646 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 134.1. Ties are not counted.

Top 20 by Significance

11 August 1985

Top 20 records on 11 August 1985 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 1985	Hamilton, US	daily low max	13.9 C (57.0 F)	8.3 C (14.9 F)	85 years	52 of 100 (Notable)
11 August 1985	Holter Dam, US	daily rain	29.0 mm (1.1 in)	14.5 mm (0.6 in)	64 years	52 of 100 (Notable)
11 August 1985	Butte Bert Mooney AP, US	daily low max	9.4 C (48.9 F)	8.4 C (15.1 F)	84 years	52 of 100 (Notable)
11 August 1985	Ternej, RU	daily rain	172.8 mm (6.8 in)	123.5 mm (4.9 in)	19 years	51 of 100 (Notable)
11 August 1985	Rudnaja Pristan, RU	daily rain	168.5 mm (6.6 in)	134.1 mm (5.3 in)	20 years	51 of 100 (Notable)
11 August 1985	Valsjon, SE	monthly rain	41.2 mm (1.6 in)	11.7 mm (0.5 in)	34 years	48 of 100 (Notable)
11 August 1985	Brookings, US	all-time high max	38.3 C (100.9 F)	0.5 C (0.9 F)	67 years	48 of 100 (Notable)
11 August 1985	Augusta, US	daily rain	29.0 mm (1.1 in)	14.5 mm (0.6 in)	64 years	46 of 100 (Notable)
11 August 1985	Ogden Pioneer Ph, US	daily low max	21.7 C (71.1 F)	5.0 C (9.0 F)	83 years	46 of 100 (Notable)
11 August 1985	Porjus, SE	monthly rain	65.2 mm (2.6 in)	15.2 mm (0.6 in)	24 years	45 of 100 (Notable)
11 August 1985	Wells, US	daily low max	17.8 C (64.0 F)	7.8 C (14.0 F)	44 years	43 of 100 (Notable)
11 August 1985	Lewistown AP, US	daily low max	12.2 C (54.0 F)	4.5 C (8.1 F)	84 years	42 of 100 (Notable)
11 August 1985	Fenn Rs, US	daily low max	15.0 C (59.0 F)	12.2 C (22.0 F)	38 years	40 of 100 (Notable)
11 August 1985	Dillon U of Montana Western, US	daily low max	16.1 C (61.0 F)	5.6 C (10.1 F)	59 years	40 of 100 (Notable)
11 August 1985	Combolcha, ET	daily low min	5.0 C (41.0 F)	5.0 C (9.0 F)	32 years	39 of 100 (Notable)
11 August 1985	Divide, US	daily low max	11.1 C (52.0 F)	9.5 C (17.1 F)	35 years	39 of 100 (Notable)
11 August 1985	Fairfield, US	daily rain	28.4 mm (1.1 in)	22.8 mm (0.9 in)	11 years	39 of 100 (Notable)
11 August 1985	Winifred, US	daily rain	25.9 mm (1.0 in)	21.6 mm (0.9 in)	11 years	39 of 100 (Notable)
11 August 1985	Wisdom, US	daily low max	12.2 C (54.0 F)	8.4 C (15.1 F)	52 years	39 of 100 (Notable)
11 August 1985	Cascade 1 NW, US	daily low max	15.6 C (60.1 F)	10.0 C (18.0 F)	36 years	38 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 1985

Records set or tied on this calendar date in each year from 1793 to 1985. 1985 had 804 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 1985-08-11: 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 2026-10-17 (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	632
20 to 40	10
40 to 60	2
60 to 80	0
80 to 100	0
100 to 120	0
120 to 140	2