Weather Records on 17 August 2012

1,215 weather records were set or tied worldwide on 17 August 2012. Highest significance: Mundoora, AU.

Key Facts for 17 August 2012

On 17 August 2012, 1,215 weather records were set or tied at long-record stations worldwide.
378 were record highs and 473 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 19 monthly and 1,193 daily.
Mundoora set a monthly record daily precipitation of 66.0 mm (2.6 in) on 17 August 2012.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 469 records.

Record Map

1,215 stations

1,215 station records on 17 August 2012 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 2012: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mundoora	Australia	Record daily precipitation	66.0 mm (2.6 in)	74 of 100 (Major)
Geranium	Australia	Record daily precipitation	25.4 mm (1.0 in)	69 of 100 (Major)
American River	Australia	Record daily precipitation	28.2 mm (1.1 in)	67 of 100 (Major)
Vandalia	United States	Record daily precipitation	68.8 mm (2.7 in)	64 of 100 (Major)
Gaya	India	Record daily precipitation	156.0 mm (6.1 in)	63 of 100 (Major)
Willunga	Australia	Record daily precipitation	28.0 mm (1.1 in)	60 of 100 (Major)
Kosciusko	United States	Record daily precipitation	53.3 mm (2.1 in)	59 of 100 (Notable)
Utsira Fyr	Norway	Record daily precipitation	44.1 mm (1.7 in)	56 of 100 (Notable)
Kanmantoo	Australia	Record daily precipitation	28.2 mm (1.1 in)	55 of 100 (Notable)
Woodland	United States	Record daily precipitation	70.1 mm (2.8 in)	53 of 100 (Notable)
Mason City	United States	Record low minimum temperature	5.0 C (41.0 F)	53 of 100 (Notable)
Nairne	Australia	Record daily precipitation	30.5 mm (1.2 in)	52 of 100 (Notable)
Bay Minette	United States	Record daily precipitation	68.6 mm (2.7 in)	52 of 100 (Notable)
Jackson Exp STN	United States	Record daily precipitation	74.4 mm (2.9 in)	52 of 100 (Notable)
Dongfang	China	Record daily precipitation	323.6 mm (12.7 in)	51 of 100 (Notable)
Evergreen	United States	Record daily precipitation	36.3 mm (1.4 in)	50 of 100 (Notable)
Millicent	Australia	Record daily precipitation	30.2 mm (1.2 in)	49 of 100 (Notable)
Dos Bocas	Mexico	Record daily precipitation	68.8 mm (2.7 in)	49 of 100 (Notable)
Marshall	United States	Record daily precipitation	76.2 mm (3.0 in)	49 of 100 (Notable)
Chapala	Mexico	Record daily precipitation	41.9 mm (1.6 in)	48 of 100 (Notable)
Greeley	United States	Record low minimum temperature	3.9 C (39.0 F)	48 of 100 (Notable)
Strathalbyn	Australia	Record daily precipitation	27.4 mm (1.1 in)	47 of 100 (Notable)
Penola Post Office	Australia	Record daily precipitation	29.6 mm (1.2 in)	47 of 100 (Notable)
Greenville	United States	Record daily precipitation	63.5 mm (2.5 in)	47 of 100 (Notable)
Osceola	United States	Record low minimum temperature	7.2 C (45.0 F)	47 of 100 (Notable)
Marion 1 SSW	United States	Record daily precipitation	65.0 mm (2.6 in)	47 of 100 (Notable)
Brassua Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Springview 2NW	United States	Record low minimum temperature	3.9 C (39.0 F)	47 of 100 (Notable)
Tyler Pounds Fld	United States	Record daily precipitation	40.1 mm (1.6 in)	47 of 100 (Notable)
Cape Willoughby	Australia	Record daily precipitation	33.2 mm (1.3 in)	46 of 100 (Notable)
Robe Comparison	Australia	Record daily precipitation	31.6 mm (1.2 in)	46 of 100 (Notable)
Chetumal Intl	Mexico	Record daily precipitation	115.6 mm (4.6 in)	46 of 100 (Notable)
Samaria	Mexico	Record low maximum temperature	26.1 C (79.0 F)	46 of 100 (Notable)
Gardiner	United States	Record daily precipitation	62.0 mm (2.4 in)	46 of 100 (Notable)
Victor Harbor (Berrima)	Australia	Record daily precipitation	39.4 mm (1.6 in)	45 of 100 (Notable)
Magdagaci	Russia	Record daily precipitation	55.9 mm (2.2 in)	45 of 100 (Notable)
Glenwood 2WNW	United States	Record low minimum temperature	5.0 C (41.0 F)	45 of 100 (Notable)
Flandreau	United States	Record low minimum temperature	3.9 C (39.0 F)	45 of 100 (Notable)
Allerton	United States	Record low minimum temperature	10.6 C (51.1 F)	44 of 100 (Notable)
Winterset 4N	United States	Record low minimum temperature	6.1 C (43.0 F)	44 of 100 (Notable)
Beaver City	United States	Record low minimum temperature	7.2 C (45.0 F)	44 of 100 (Notable)
Concordia ASOS	United States	Record low minimum temperature	9.4 C (48.9 F)	44 of 100 (Notable)
Emory	United States	Record daily precipitation	50.0 mm (2.0 in)	43 of 100 (Notable)
Kalangadoo	Australia	Record daily precipitation	29.0 mm (1.1 in)	42 of 100 (Notable)
Indianola 1SW	United States	Record low minimum temperature	7.8 C (46.0 F)	42 of 100 (Notable)
Logan 1 WNW	United States	Record low minimum temperature	6.1 C (43.0 F)	42 of 100 (Notable)
Webster City	United States	Record low minimum temperature	6.7 C (44.1 F)	42 of 100 (Notable)
Coldwater	United States	Record low minimum temperature	13.3 C (55.9 F)	42 of 100 (Notable)
Lodgepole	United States	Record low maximum temperature	20.0 C (68.0 F)	42 of 100 (Notable)
Madrid	United States	Record low maximum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Elk	United States	Record high minimum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
Sulphur Springs	United States	Record daily precipitation	32.8 mm (1.3 in)	42 of 100 (Notable)
Benito Juarez	Mexico	Record daily precipitation	29.5 mm (1.2 in)	41 of 100 (Notable)
Finca la Soledad	Mexico	Record daily precipitation	70.9 mm (2.8 in)	41 of 100 (Notable)
Canyon Dam	United States	Record high minimum temperature	16.1 C (61.0 F)	41 of 100 (Notable)
Forest City 2 NNE	United States	Record low minimum temperature	6.7 C (44.1 F)	41 of 100 (Notable)
Maryville 2E	United States	Record low minimum temperature	8.9 C (48.0 F)	41 of 100 (Notable)
Tekamah	United States	Record low minimum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Wessington Springs	United States	Record low minimum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Burlington Muni AP	United States	Record low minimum temperature	11.1 C (52.0 F)	41 of 100 (Notable)

Counts by Type and Timescale

1,215 records

Records set or tied on 17 August 2012 by type: Highest daily maximum 177, Lowest daily maximum 172, Highest daily minimum 201, Lowest daily minimum 301, Heaviest daily rainfall 364.

Records on 17 August 2012 by type
Record type	Records
Highest daily maximum	177
Lowest daily maximum	172
Highest daily minimum	201
Lowest daily minimum	301
Heaviest daily rainfall	364
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 2012 by timescale: all-time 3, monthly 19, daily 1,193.

How Much Records Were Beaten By

944 broken records

Margins by which the 944 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 112.8. Ties are not counted.

Top 20 by Significance

17 August 2012

Top 20 records on 17 August 2012 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 2012	Mundoora, AU	monthly rain	66.0 mm (2.6 in)	31.5 mm (1.2 in)	47 years	74 of 100 (Major)
17 August 2012	Geranium, AU	daily rain	25.4 mm (1.0 in)	13.2 mm (0.5 in)	90 years	69 of 100 (Major)
17 August 2012	American River, AU	daily rain	28.2 mm (1.1 in)	15.5 mm (0.6 in)	90 years	67 of 100 (Major)
17 August 2012	Vandalia, US	daily rain	68.8 mm (2.7 in)	47.2 mm (1.9 in)	64 years	64 of 100 (Major)
17 August 2012	Gaya, IN	daily rain	156.0 mm (6.1 in)	79.5 mm (3.1 in)	70 years	63 of 100 (Major)
17 August 2012	Willunga, AU	daily rain	28.0 mm (1.1 in)	10.5 mm (0.4 in)	106 years	60 of 100 (Major)
17 August 2012	Kosciusko, US	daily rain	53.3 mm (2.1 in)	27.9 mm (1.1 in)	111 years	59 of 100 (Notable)
17 August 2012	Utsira Fyr, NO	daily rain	44.1 mm (1.7 in)	28.8 mm (1.1 in)	48 years	56 of 100 (Notable)
17 August 2012	Kanmantoo, AU	daily rain	28.2 mm (1.1 in)	7.9 mm (0.31 in)	106 years	55 of 100 (Notable)
17 August 2012	Woodland, US	daily rain	70.1 mm (2.8 in)	43.9 mm (1.7 in)	31 years	53 of 100 (Notable)
17 August 2012	Mason City, US	daily low min	5.0 C (41.0 F)	5.0 C (9.0 F)	116 years	53 of 100 (Notable)
17 August 2012	Nairne, AU	daily rain	30.5 mm (1.2 in)	8.1 mm (0.32 in)	112 years	52 of 100 (Notable)
17 August 2012	Bay Minette, US	daily rain	68.6 mm (2.7 in)	21.9 mm (0.9 in)	97 years	52 of 100 (Notable)
17 August 2012	Jackson Exp STN, US	daily rain	74.4 mm (2.9 in)	22.3 mm (0.9 in)	91 years	52 of 100 (Notable)
17 August 2012	Dongfang, CN	daily rain	323.6 mm (12.7 in)	112.8 mm (4.4 in)	55 years	51 of 100 (Notable)
17 August 2012	Evergreen, US	daily rain	36.3 mm (1.4 in)	15.0 mm (0.6 in)	101 years	50 of 100 (Notable)
17 August 2012	Millicent, AU	daily rain	30.2 mm (1.2 in)	13.7 mm (0.5 in)	47 years	49 of 100 (Notable)
17 August 2012	Dos Bocas, MX	daily rain	68.8 mm (2.7 in)	47.0 mm (1.9 in)	23 years	49 of 100 (Notable)
17 August 2012	Marshall, US	daily rain	76.2 mm (3.0 in)	25.1 mm (1.0 in)	86 years	49 of 100 (Notable)
17 August 2012	Chapala, MX	daily rain	41.9 mm (1.6 in)	35.0 mm (1.4 in)	41 years	48 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 2012

Records set or tied on this calendar date in each year from 1797 to 2012. 2012 had 1,215 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	1,528
2021	800
2022	1,427
2023	1,032
2024	740
2025	538
2026	535

Download the Data

Data for records on 2012-08-17: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	908
20 to 40	26
40 to 60	6
60 to 80	1
80 to 100	1
100 to 120	2