Weather Records on 28 August 1991

968 weather records were set or tied worldwide on 28 August 1991. Highest significance: Happy Valley Reservoir, AU.

Key Facts for 28 August 1991

On 28 August 1991, 968 weather records were set or tied at long-record stations worldwide.
564 were record highs and 195 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 26 monthly and 938 daily.
Happy Valley Reservoir set a daily record precipitation of 29.8 mm (1.2 in) on 28 August 1991.
Across 161 earlier years (1800 to 2026) the same calendar date averaged 454 records.

Record Map

968 stations

968 station records on 28 August 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 28 August 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Happy Valley Reservoir	Australia	Record daily precipitation	29.8 mm (1.2 in)	52 of 100 (Notable)
Verhnij Ufalej	Russia	Record daily precipitation	40.2 mm (1.6 in)	51 of 100 (Notable)
Lilydale Post Office	Australia	Record daily precipitation	42.0 mm (1.7 in)	49 of 100 (Notable)
Brackettville	United States	Record low minimum temperature	14.4 C (57.9 F)	48 of 100 (Notable)
Minidoka Dam	United States	Record daily precipitation	33.5 mm (1.3 in)	47 of 100 (Notable)
Washburn	United States	Record high minimum temperature	24.4 C (75.9 F)	47 of 100 (Notable)
Atil	Mexico	Record low minimum temperature	10.6 C (51.1 F)	46 of 100 (Notable)
Propria	Brazil	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Westhope	United States	Record high minimum temperature	25.6 C (78.1 F)	45 of 100 (Notable)
Evergreen	United States	Record daily precipitation	25.4 mm (1.0 in)	42 of 100 (Notable)
Walterboro 1 SW	United States	Record high minimum temperature	26.1 C (79.0 F)	42 of 100 (Notable)
Kent	United States	Record low maximum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Hattiesburg 5SW	United States	Record daily precipitation	39.9 mm (1.6 in)	41 of 100 (Notable)
Canyon Ferry Dam	United States	Record daily precipitation	26.7 mm (1.1 in)	41 of 100 (Notable)
Culbertson	United States	Record high minimum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Wilmot (Back Road)	Australia	Record daily precipitation	40.0 mm (1.6 in)	40 of 100 (Notable)
Grayling	United States	Record high maximum temperature	38.9 C (102.0 F)	40 of 100 (Notable)
Billings Wtp	United States	Record high minimum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Wishek	United States	Record high minimum temperature	20.0 C (68.0 F)	40 of 100 (Notable)
Republic	United States	Record high minimum temperature	12.8 C (55.0 F)	40 of 100 (Notable)
Belair (State Flora Nursery)	Australia	Record daily precipitation	32.8 mm (1.3 in)	39 of 100 (Notable)
N Fk Rs	United States	Record low maximum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Kremmling	United States	Record high minimum temperature	10.0 C (50.0 F)	39 of 100 (Notable)
Shelbyville Sewage Plt	United States	Record high minimum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Collins	United States	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Springview 2NW	United States	Record daily precipitation	29.2 mm (1.1 in)	39 of 100 (Notable)
Lahontan Dam	United States	Record low minimum temperature	7.2 C (45.0 F)	39 of 100 (Notable)
Towner 2 NE	United States	Record high minimum temperature	24.4 C (75.9 F)	39 of 100 (Notable)
Buffalo	United States	Record high minimum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Bishop AP	United States	Record low minimum temperature	4.4 C (39.9 F)	39 of 100 (Notable)
Hemse	Sweden	Record daily precipitation	34.6 mm (1.4 in)	38 of 100 (Notable)
Albion	United States	Record high minimum temperature	22.8 C (73.0 F)	38 of 100 (Notable)
Fergus Falls	United States	Record high minimum temperature	22.2 C (72.0 F)	38 of 100 (Notable)
Mc Clusky	United States	Record high minimum temperature	23.3 C (73.9 F)	38 of 100 (Notable)
Colony	United States	Record high minimum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Bismarck	United States	Record high minimum temperature	24.4 C (75.9 F)	37 of 100 (Notable)
Frankfort 2NE	United States	Record high maximum temperature	32.2 C (90.0 F)	36 of 100 (Notable)
Richmond Post Office	Australia	Record low minimum temperature	3.7 C (38.7 F)	35 of 100 (Notable)
Dartmouth Reservoir	Australia	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Tula	Mexico	Record daily precipitation	45.0 mm (1.8 in)	35 of 100 (Notable)
Alliance 1WNW	United States	Record high maximum temperature	37.2 C (99.0 F)	35 of 100 (Notable)
Lovelock	United States	Record low minimum temperature	2.8 C (37.0 F)	35 of 100 (Notable)
Ft Meade	United States	Record high minimum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Lead	United States	Record high minimum temperature	21.1 C (70.0 F)	35 of 100 (Notable)
Bordeaux-Merignac	France	Record high maximum temperature	36.2 C (97.2 F)	34 of 100 (Routine)
Tortosa - Observatorio del Ebr	Spain	Record high maximum temperature	36.6 C (97.9 F)	34 of 100 (Routine)
Nakhon Ratchasima	Thailand	Record daily precipitation	49.0 mm (1.9 in)	34 of 100 (Routine)
Visalia	United States	Record low maximum temperature	26.1 C (79.0 F)	34 of 100 (Routine)
Columbia	United States	Record daily precipitation	52.1 mm (2.1 in)	34 of 100 (Routine)
Dunn Ctr 1E	United States	Record high minimum temperature	23.9 C (75.0 F)	34 of 100 (Routine)
Belle Fourche	United States	Record high minimum temperature	22.8 C (73.0 F)	34 of 100 (Routine)
Dover 1 W	United States	Record high minimum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Tegjultja	Russia	Record daily precipitation	30.9 mm (1.2 in)	33 of 100 (Routine)
Crosby	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Hettinger	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Mott	United States	Record high maximum temperature	40.0 C (104.0 F)	33 of 100 (Routine)
Richardton Abbey	United States	Record high minimum temperature	22.8 C (73.0 F)	33 of 100 (Routine)
Dutch Harbor	United States	Record low minimum temperature	0.6 C (33.1 F)	33 of 100 (Routine)
Pocahontas 1	United States	Record daily precipitation	59.7 mm (2.4 in)	32 of 100 (Routine)
Medicine Lake 3 SE	United States	Record high minimum temperature	19.4 C (66.9 F)	32 of 100 (Routine)

Counts by Type and Timescale

968 records

Records set or tied on 28 August 1991 by type: Highest daily maximum 186, Lowest daily maximum 105, Highest daily minimum 378, Lowest daily minimum 90, Heaviest daily rainfall 209.

Records on 28 August 1991 by type
Record type	Records
Highest daily maximum	186
Lowest daily maximum	105
Highest daily minimum	378
Lowest daily minimum	90
Heaviest daily rainfall	209
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 28 August 1991 by timescale: all-time 4, monthly 26, daily 938.

How Much Records Were Beaten By

669 broken records

Margins by which the 669 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 35.3. Ties are not counted.

Top 20 by Significance

28 August 1991

Top 20 records on 28 August 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 August 1991	Happy Valley Reservoir, AU	daily rain	29.8 mm (1.2 in)	9.7 mm (0.38 in)	81 years	52 of 100 (Notable)
28 August 1991	Verhnij Ufalej, RU	daily rain	40.2 mm (1.6 in)	24.2 mm (1.0 in)	32 years	51 of 100 (Notable)
28 August 1991	Lilydale Post Office, AU	daily rain	42.0 mm (1.7 in)	10.2 mm (0.4 in)	93 years	49 of 100 (Notable)
28 August 1991	Brackettville, US	daily low min	14.4 C (57.9 F)	2.8 C (5.0 F)	84 years	48 of 100 (Notable)
28 August 1991	Minidoka Dam, US	monthly rain	33.5 mm (1.3 in)	10.9 mm (0.4 in)	27 years	47 of 100 (Notable)
28 August 1991	Washburn, US	daily high min	24.4 C (75.9 F)	4.4 C (7.9 F)	91 years	47 of 100 (Notable)
28 August 1991	Atil, MX	daily low min	10.6 C (51.1 F)	6.1 C (11.0 F)	36 years	46 of 100 (Notable)
28 August 1991	Propria, BR	daily rain	30.0 mm (1.2 in)	15.2 mm (0.6 in)	40 years	45 of 100 (Notable)
28 August 1991	Westhope, US	monthly high min	25.6 C (78.1 F)	1.2 C (2.2 F)	80 years	45 of 100 (Notable)
28 August 1991	Evergreen, US	daily rain	25.4 mm (1.0 in)	7.6 mm (0.30 in)	92 years	42 of 100 (Notable)
28 August 1991	Walterboro 1 SW, US	daily high min	26.1 C (79.0 F)	1.7 C (3.1 F)	88 years	42 of 100 (Notable)
28 August 1991	Kent, US	monthly low max	16.1 C (61.0 F)	0.6 C (1.1 F)	79 years	42 of 100 (Notable)
28 August 1991	Hattiesburg 5SW, US	daily rain	39.9 mm (1.6 in)	9.4 mm (0.37 in)	88 years	41 of 100 (Notable)
28 August 1991	Canyon Ferry Dam, US	daily rain	26.7 mm (1.1 in)	15.5 mm (0.6 in)	28 years	41 of 100 (Notable)
28 August 1991	Culbertson, US	daily high min	20.6 C (69.1 F)	2.8 C (5.0 F)	88 years	41 of 100 (Notable)
28 August 1991	Wilmot (Back Road), AU	daily rain	40.0 mm (1.6 in)	15.9 mm (0.6 in)	60 years	40 of 100 (Notable)
28 August 1991	Grayling, US	monthly high max	38.9 C (102.0 F)	1.1 C (2.0 F)	60 years	40 of 100 (Notable)
28 August 1991	Billings Wtp, US	daily high min	17.8 C (64.0 F)	2.2 C (4.0 F)	85 years	40 of 100 (Notable)
28 August 1991	Wishek, US	daily high min	20.0 C (68.0 F)	3.3 C (5.9 F)	85 years	40 of 100 (Notable)
28 August 1991	Republic, US	daily high min	12.8 C (55.0 F)	1.7 C (3.1 F)	86 years	40 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

1800 to 1991

Records set or tied on this calendar date in each year from 1800 to 1991. 1991 had 968 records.

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

Records on 08-28 in each year
Year	Records
1800	1
1807	4
1811	1
1814	2
1817	1
1835	1
1849	1
1850	1
1851	1
1854	1
1856	1
1858	1
1863	1
1864	4
1865	3
1870	2
1873	1
1874	1
1875	1
1876	1
1877	2
1880	3
1881	4
1884	1
1885	2
1886	1
1887	1
1889	1
1890	4
1891	1
1892	2
1893	3
1894	2
1895	4
1896	9
1897	3
1901	12
1902	2
1903	16
1904	13
1905	23
1906	12
1907	2
1908	10
1909	20
1910	5
1911	34
1912	44
1913	17
1914	40
1915	43
1916	141
1917	49
1918	43
1919	39
1920	80
1921	47
1922	60
1923	79
1924	207
1925	165
1926	241
1927	239
1928	252
1929	162
1930	152
1931	306
1932	383
1933	376
1934	346
1935	545
1936	531
1937	545
1938	325
1939	296
1940	368
1941	485
1942	461
1943	366
1944	592
1945	368
1946	495
1947	288
1948	1,133
1949	442
1950	492
1951	694
1952	447
1953	762
1954	499
1955	413
1956	327
1957	545
1958	288
1959	552
1960	470
1961	371
1962	469
1963	464
1964	556
1965	635
1966	338
1967	701
1968	864
1969	1,089
1970	617
1971	695
1972	651
1973	1,211
1974	816
1975	507
1976	505
1977	757
1978	774
1979	838
1980	424
1981	1,120
1982	1,009
1983	748
1984	886
1985	528
1986	1,995
1987	1,260
1988	953
1989	911
1990	983
1991	968
1992	1,814
1993	1,061
1994	688
1995	954
1996	1,109
1997	1,082
1998	1,415
1999	905
2000	1,028
2001	1,042
2002	903
2003	792
2004	966
2005	731
2006	1,244
2007	788
2008	889
2009	928
2010	914
2011	1,748
2012	682
2013	693
2014	590
2015	660
2016	812
2017	1,060
2018	1,110
2019	943
2020	1,008
2021	459
2022	388
2023	899
2024	862
2025	871
2026	873

Download the Data

Data for records on 1991-08-28: 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 5	561
5 to 10	63
10 to 15	25
15 to 20	11
20 to 25	4
25 to 30	4
30 to 35	0
35 to 40	1