Weather Records on 20 August 1991

804 weather records were set or tied worldwide on 20 August 1991. Highest significance: Lawrence, US.

Key Facts for 20 August 1991

On 20 August 1991, 804 weather records were set or tied at long-record stations worldwide.
302 were record highs and 224 were record lows, counting maximum and minimum temperature.
By timescale, 9 were all-time records, 29 monthly and 766 daily.
Lawrence set a monthly record daily precipitation of 153.7 mm (6.1 in) on 20 August 1991.
Across 163 earlier years (1797 to 2026) the same calendar date averaged 453 records.

Record Map

804 stations

804 station records on 20 August 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 August 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lawrence	United States	Record daily precipitation	153.7 mm (6.1 in)	78 of 100 (Major)
Berlin	United States	Record daily precipitation	90.2 mm (3.6 in)	65 of 100 (Major)
Gardiner	United States	Record daily precipitation	151.4 mm (6.0 in)	64 of 100 (Major)
Farmington	United States	Record daily precipitation	78.0 mm (3.1 in)	63 of 100 (Major)
York Pond	United States	Record daily precipitation	74.9 mm (2.9 in)	62 of 100 (Major)
Stevenson Dam	United States	Record daily precipitation	110.5 mm (4.4 in)	61 of 100 (Major)
Newburyport	United States	Record daily precipitation	108.7 mm (4.3 in)	60 of 100 (Major)
Bradford	United States	Record daily precipitation	96.8 mm (3.8 in)	60 of 100 (Major)
Keene	United States	Record daily precipitation	77.7 mm (3.1 in)	59 of 100 (Notable)
Hardwick	United States	Record daily precipitation	103.1 mm (4.1 in)	58 of 100 (Notable)
Newport	United States	Record daily precipitation	71.1 mm (2.8 in)	58 of 100 (Notable)
Bellows Falls	United States	Record daily precipitation	56.4 mm (2.2 in)	58 of 100 (Notable)
Orono	United States	Record daily precipitation	50.3 mm (2.0 in)	57 of 100 (Notable)
Petersham 3 N	United States	Record daily precipitation	110.0 mm (4.3 in)	57 of 100 (Notable)
Lakeport 2	United States	Record daily precipitation	88.1 mm (3.5 in)	57 of 100 (Notable)
Lancaster	United States	Record daily precipitation	50.8 mm (2.0 in)	57 of 100 (Notable)
Amherst	United States	Record daily precipitation	79.2 mm (3.1 in)	55 of 100 (Notable)
Errol	United States	Record daily precipitation	63.0 mm (2.5 in)	55 of 100 (Notable)
Turgaj	Kazakhstan	Record low minimum temperature	0.0 C (32.0 F)	54 of 100 (Notable)
Holyoke	United States	Record daily precipitation	69.6 mm (2.7 in)	53 of 100 (Notable)
Lowell	United States	Record daily precipitation	139.2 mm (5.5 in)	53 of 100 (Notable)
Santa Maria Do Jetiba (Dnos)	Brazil	Record daily precipitation	42.1 mm (1.7 in)	52 of 100 (Notable)
Nikko	Japan	Record daily precipitation	252.0 mm (9.9 in)	52 of 100 (Notable)
Woodland	United States	Record daily precipitation	60.7 mm (2.4 in)	52 of 100 (Notable)
Kawaguchiko	Japan	Record daily precipitation	220.0 mm (8.7 in)	51 of 100 (Notable)
Bridgton 3 NW	United States	Record daily precipitation	88.4 mm (3.5 in)	51 of 100 (Notable)
New Salem	United States	Record daily precipitation	90.9 mm (3.6 in)	51 of 100 (Notable)
Santa Paula	United States	Record low minimum temperature	2.2 C (36.0 F)	50 of 100 (Notable)
Sanford 2 NNW	United States	Record daily precipitation	79.5 mm (3.1 in)	50 of 100 (Notable)
Kursk	Russia	Record daily precipitation	40.6 mm (1.6 in)	49 of 100 (Notable)
Saugatuck Rsvr	United States	Record daily precipitation	98.3 mm (3.9 in)	49 of 100 (Notable)
Lewiston	United States	Record daily precipitation	133.6 mm (5.3 in)	49 of 100 (Notable)
Ware	United States	Record daily precipitation	100.8 mm (4.0 in)	49 of 100 (Notable)
Monroe	United States	Record daily precipitation	91.9 mm (3.6 in)	49 of 100 (Notable)
Brackettville	United States	Record low minimum temperature	15.0 C (59.0 F)	49 of 100 (Notable)
Vernon	United States	Record daily precipitation	83.6 mm (3.3 in)	49 of 100 (Notable)
Jfk Intl AP	United States	Record daily precipitation	86.6 mm (3.4 in)	49 of 100 (Notable)
Valsugana Velha-Montante	Brazil	Record daily precipitation	58.6 mm (2.3 in)	48 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	127.3 mm (5.0 in)	48 of 100 (Notable)
Ilomantsi Kk	Finland	Record daily precipitation	35.2 mm (1.4 in)	46 of 100 (Notable)
Kumagaya	Japan	Record daily precipitation	158.0 mm (6.2 in)	46 of 100 (Notable)
Southbridge 3 SW	United States	Record daily precipitation	129.0 mm (5.1 in)	46 of 100 (Notable)
Westfield	United States	Record daily precipitation	95.5 mm (3.8 in)	46 of 100 (Notable)
West Medway	United States	Record daily precipitation	115.6 mm (4.6 in)	46 of 100 (Notable)
Norwalk Wwtp	United States	Record daily precipitation	52.6 mm (2.1 in)	46 of 100 (Notable)
South Newbury	United States	Record daily precipitation	60.5 mm (2.4 in)	46 of 100 (Notable)
Danbury	United States	Record daily precipitation	89.7 mm (3.5 in)	45 of 100 (Notable)
Falls Village	United States	Record daily precipitation	68.8 mm (2.7 in)	45 of 100 (Notable)
Unionville	United States	Record daily precipitation	86.4 mm (3.4 in)	45 of 100 (Notable)
Tully Lake	United States	Record daily precipitation	78.0 mm (3.1 in)	45 of 100 (Notable)
Bethlehem	United States	Record daily precipitation	58.9 mm (2.3 in)	45 of 100 (Notable)
Grafton	United States	Record daily precipitation	65.3 mm (2.6 in)	45 of 100 (Notable)
Put-In-Bay	United States	Record daily precipitation	53.3 mm (2.1 in)	45 of 100 (Notable)
Krasnokutskoe	Kazakhstan	Record daily precipitation	52.4 mm (2.1 in)	44 of 100 (Notable)
Shuttle Meadow Rsvr	United States	Record daily precipitation	101.1 mm (4.0 in)	44 of 100 (Notable)
Millinocket	United States	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Presque Isle	United States	Record daily precipitation	47.0 mm (1.9 in)	44 of 100 (Notable)
South Lyndeboro	United States	Record daily precipitation	136.9 mm (5.4 in)	44 of 100 (Notable)
Douglas	United States	Record low minimum temperature	14.4 C (57.9 F)	43 of 100 (Notable)
Mansfield Hollow Lake	United States	Record daily precipitation	140.0 mm (5.5 in)	42 of 100 (Notable)

Counts by Type and Timescale

804 records

Records set or tied on 20 August 1991 by type: Highest daily maximum 157, Lowest daily maximum 92, Highest daily minimum 145, Lowest daily minimum 132, Heaviest daily rainfall 278.

Records on 20 August 1991 by type
Record type	Records
Highest daily maximum	157
Lowest daily maximum	92
Highest daily minimum	145
Lowest daily minimum	132
Heaviest daily rainfall	278
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 August 1991 by timescale: all-time 9, monthly 29, daily 766.

How Much Records Were Beaten By

606 broken records

Margins by which the 606 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 153.8. Ties are not counted.

Top 20 by Significance

20 August 1991

Top 20 records on 20 August 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 1991	Lawrence, US	monthly rain	153.7 mm (6.1 in)	53.1 mm (2.1 in)	63 years	78 of 100 (Major)
20 August 1991	Berlin, US	daily rain	90.2 mm (3.6 in)	61.0 mm (2.4 in)	50 years	65 of 100 (Major)
20 August 1991	Gardiner, US	monthly rain	151.4 mm (6.0 in)	53.4 mm (2.1 in)	15 years	64 of 100 (Major)
20 August 1991	Farmington, US	daily rain	78.0 mm (3.1 in)	31.0 mm (1.2 in)	86 years	63 of 100 (Major)
20 August 1991	York Pond, US	daily rain	74.9 mm (2.9 in)	63.5 mm (2.5 in)	53 years	62 of 100 (Major)
20 August 1991	Stevenson Dam, US	daily rain	110.5 mm (4.4 in)	79.5 mm (3.1 in)	40 years	61 of 100 (Major)
20 August 1991	Newburyport, US	monthly rain	108.7 mm (4.3 in)	49.5 mm (1.9 in)	5 years	60 of 100 (Major)
20 August 1991	Bradford, US	daily rain	96.8 mm (3.8 in)	66.6 mm (2.6 in)	52 years	60 of 100 (Major)
20 August 1991	Keene, US	daily rain	77.7 mm (3.1 in)	27.7 mm (1.1 in)	86 years	59 of 100 (Notable)
20 August 1991	Hardwick, US	daily rain	103.1 mm (4.1 in)	68.3 mm (2.7 in)	40 years	58 of 100 (Notable)
20 August 1991	Newport, US	daily rain	71.1 mm (2.8 in)	52.8 mm (2.1 in)	40 years	58 of 100 (Notable)
20 August 1991	Bellows Falls, US	daily rain	56.4 mm (2.2 in)	41.7 mm (1.6 in)	50 years	58 of 100 (Notable)
20 August 1991	Orono, US	daily rain	50.3 mm (2.0 in)	24.1 mm (0.9 in)	88 years	57 of 100 (Notable)
20 August 1991	Petersham 3 N, US	daily rain	110.0 mm (4.3 in)	87.1 mm (3.4 in)	36 years	57 of 100 (Notable)
20 August 1991	Lakeport 2, US	daily rain	88.1 mm (3.5 in)	42.6 mm (1.7 in)	50 years	57 of 100 (Notable)
20 August 1991	Lancaster, US	daily rain	50.8 mm (2.0 in)	39.6 mm (1.6 in)	28 years	57 of 100 (Notable)
20 August 1991	Amherst, US	daily rain	79.2 mm (3.1 in)	27.6 mm (1.1 in)	86 years	55 of 100 (Notable)
20 August 1991	Errol, US	daily rain	63.0 mm (2.5 in)	32.8 mm (1.3 in)	50 years	55 of 100 (Notable)
20 August 1991	Turgaj, KZ	monthly low min	0.0 C (32.0 F)	2.9 C (5.2 F)	90 years	54 of 100 (Notable)
20 August 1991	Holyoke, US	daily rain	69.6 mm (2.7 in)	34.0 mm (1.3 in)	86 years	53 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 1991

Records set or tied on this calendar date in each year from 1797 to 1991. 1991 had 804 records.

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

Records on 08-20 in each year
Year	Records
1797	1
1807	1
1809	2
1816	1
1830	1
1832	1
1838	1
1840	1
1842	1
1846	1
1849	1
1850	1
1852	1
1858	3
1863	5
1867	4
1870	3
1871	1
1873	1
1875	2
1877	1
1883	2
1884	2
1885	6
1886	1
1888	1
1889	2
1890	2
1891	2
1892	6
1893	1
1894	1
1895	1
1896	5
1897	6
1898	1
1899	5
1900	7
1901	12
1902	3
1903	7
1904	30
1905	7
1906	26
1907	15
1908	21
1909	69
1910	7
1911	18
1912	25
1913	23
1914	15
1915	14
1916	74
1917	51
1918	69
1919	25
1920	47
1921	23
1922	52
1923	83
1924	132
1925	193
1926	187
1927	338
1928	101
1929	213
1930	318
1931	214
1932	299
1933	324
1934	376
1935	339
1936	543
1937	537
1938	250
1939	448
1940	695
1941	230
1942	429
1943	436
1944	355
1945	398
1946	349
1947	988
1948	403
1949	431
1950	1,341
1951	824
1952	425
1953	441
1954	476
1955	848
1956	678
1957	342
1958	281
1959	764
1960	465
1961	520
1962	684
1963	577
1964	629
1965	470
1966	1,094
1967	657
1968	862
1969	608
1970	414
1971	585
1972	522
1973	490
1974	565
1975	411
1976	894
1977	860
1978	563
1979	1,009
1980	991
1981	856
1982	620
1983	1,465
1984	696
1985	666
1986	819
1987	564
1988	991
1989	603
1990	1,262
1991	804
1992	1,168
1993	759
1994	719
1995	1,113
1996	900
1997	1,214
1998	802
1999	810
2000	989
2001	909
2002	1,208
2003	1,031
2004	1,333
2005	1,112
2006	851
2007	1,955
2008	1,170
2009	1,414
2010	1,028
2011	987
2012	1,086
2013	545
2014	582
2015	1,075
2016	872
2017	324
2018	657
2019	698
2020	1,051
2021	1,028
2022	1,038
2023	1,479
2024	589
2025	1,134
2026	985

Download the Data

Data for records on 1991-08-20: 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	514
20 to 40	50
40 to 60	25
60 to 80	12
80 to 100	2
100 to 120	1
120 to 140	0
140 to 160	2