Weather Records on 31 August 1986

1,218 weather records were set or tied worldwide on 31 August 1986. Highest significance: Velikie Luki, RU.

Key Facts for 31 August 1986

On 31 August 1986, 1,218 weather records were set or tied at long-record stations worldwide.
127 were record highs and 863 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 179 monthly and 1,037 daily.
Velikie Luki set a daily record precipitation of 40.9 mm (1.6 in) on 31 August 1986.
Across 165 earlier years (1796 to 2026) the same calendar date averaged 431 records.

Record Map

1,218 stations

1,218 station records on 31 August 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 August 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Velikie Luki	Russia	Record daily precipitation	40.9 mm (1.6 in)	76 of 100 (Major)
San Jon	United States	Record daily precipitation	75.2 mm (3.0 in)	67 of 100 (Major)
Conrad	United States	Record daily precipitation	46.7 mm (1.8 in)	66 of 100 (Major)
Hobart Muni AP	United States	Record daily precipitation	87.4 mm (3.4 in)	65 of 100 (Major)
Newnan 7 WNW	United States	Record low maximum temperature	17.8 C (64.0 F)	60 of 100 (Major)
Choteau	United States	Record daily precipitation	27.9 mm (1.1 in)	57 of 100 (Notable)
Dundee 6 NNW	United States	Record daily precipitation	77.0 mm (3.0 in)	57 of 100 (Notable)
Galeana	Mexico	Record daily precipitation	86.9 mm (3.4 in)	56 of 100 (Notable)
Sayre	United States	Record daily precipitation	55.9 mm (2.2 in)	55 of 100 (Notable)
Crow Agency	United States	Record daily precipitation	56.1 mm (2.2 in)	54 of 100 (Notable)
Vysnij Volocek	Russia	Record daily precipitation	35.9 mm (1.4 in)	53 of 100 (Notable)
Altus Irig Rsch STN	United States	Record daily precipitation	61.0 mm (2.4 in)	53 of 100 (Notable)
Rome	United States	Record low maximum temperature	18.9 C (66.0 F)	52 of 100 (Notable)
Waynesboro 2 S	United States	Record low maximum temperature	18.9 C (66.0 F)	52 of 100 (Notable)
State UNIV	United States	Record low maximum temperature	20.0 C (68.0 F)	52 of 100 (Notable)
Walnut Canyon Nm	United States	Record daily precipitation	44.5 mm (1.8 in)	50 of 100 (Notable)
Deland 1 SSE	United States	Record daily precipitation	111.5 mm (4.4 in)	50 of 100 (Notable)
Experiment	United States	Record low minimum temperature	11.1 C (52.0 F)	50 of 100 (Notable)
Matador	United States	Record daily precipitation	59.7 mm (2.4 in)	50 of 100 (Notable)
Talbotton	United States	Record low maximum temperature	18.9 C (66.0 F)	49 of 100 (Notable)
Aiken 5SE	United States	Record low maximum temperature	18.9 C (66.0 F)	49 of 100 (Notable)
Verebye (Closed)	Russia	Record daily precipitation	32.7 mm (1.3 in)	48 of 100 (Notable)
Fitzgerald	United States	Record low minimum temperature	13.9 C (57.0 F)	48 of 100 (Notable)
Blackleaf	United States	Record daily precipitation	34.3 mm (1.4 in)	48 of 100 (Notable)
Pendroy 2 NNW	United States	Record daily precipitation	68.6 mm (2.7 in)	48 of 100 (Notable)
Concord	United States	Record low maximum temperature	20.0 C (68.0 F)	48 of 100 (Notable)
Double Four Rch	United States	Record daily precipitation	31.8 mm (1.3 in)	48 of 100 (Notable)
Guntersville	United States	Record low maximum temperature	22.8 C (73.0 F)	47 of 100 (Notable)
Albany 3 SE	United States	Record low maximum temperature	17.8 C (64.0 F)	47 of 100 (Notable)
Newberry	United States	Record low maximum temperature	18.9 C (66.0 F)	47 of 100 (Notable)
Interior 3 NE	United States	Record daily precipitation	36.8 mm (1.4 in)	47 of 100 (Notable)
Wellington	United States	Record daily precipitation	71.1 mm (2.8 in)	47 of 100 (Notable)
Ft Benton	United States	Record daily precipitation	32.0 mm (1.3 in)	46 of 100 (Notable)
Portsmouth-Sciotoville	United States	Record low minimum temperature	2.2 C (36.0 F)	46 of 100 (Notable)
Saluda	United States	Record low maximum temperature	18.3 C (64.9 F)	46 of 100 (Notable)
Ruston la Tech	United States	Record low minimum temperature	9.4 C (48.9 F)	45 of 100 (Notable)
Southport 5 N	United States	Record low minimum temperature	12.2 C (54.0 F)	45 of 100 (Notable)
Fayetteville (Pwc)	United States	Record low maximum temperature	18.3 C (64.9 F)	44 of 100 (Notable)
Louisburg	United States	Record low maximum temperature	19.4 C (66.9 F)	44 of 100 (Notable)
Cheraw	United States	Record low maximum temperature	17.2 C (63.0 F)	44 of 100 (Notable)
Siliguri	India	Record daily precipitation	138.9 mm (5.5 in)	43 of 100 (Notable)
Steynsrus (Mun)	South Africa	Record daily precipitation	39.5 mm (1.6 in)	43 of 100 (Notable)
Douglas	United States	Record low minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Thomaston 4SE	United States	Record low maximum temperature	19.4 C (66.9 F)	43 of 100 (Notable)
Geraldine	United States	Record daily precipitation	40.6 mm (1.6 in)	43 of 100 (Notable)
Loma	United States	Record daily precipitation	51.1 mm (2.0 in)	43 of 100 (Notable)
Winifred	United States	Record daily precipitation	37.1 mm (1.5 in)	43 of 100 (Notable)
Bay Minette	United States	Record low maximum temperature	23.9 C (75.0 F)	42 of 100 (Notable)
Lumpkin 2 SE	United States	Record low maximum temperature	26.1 C (79.0 F)	42 of 100 (Notable)
Millen 4 N	United States	Record low maximum temperature	20.6 C (69.1 F)	42 of 100 (Notable)
Skq Dam	United States	Record daily precipitation	32.3 mm (1.3 in)	42 of 100 (Notable)
Kingstree	United States	Record low maximum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Santuck	United States	Record low maximum temperature	20.0 C (68.0 F)	42 of 100 (Notable)
Eastman 1 W	United States	Record low minimum temperature	14.4 C (57.9 F)	41 of 100 (Notable)
Tiber Dam	United States	Record daily precipitation	33.0 mm (1.3 in)	41 of 100 (Notable)
Southport 5 N	United States	Record low maximum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Novgorod	Russia	Record daily precipitation	25.8 mm (1.0 in)	40 of 100 (Notable)
Holm	Russia	Record daily precipitation	34.0 mm (1.3 in)	40 of 100 (Notable)
Perm	Russia	Record low minimum temperature	-1.9 C (28.6 F)	40 of 100 (Notable)
Winnfield 3 N	United States	Record low minimum temperature	13.3 C (55.9 F)	40 of 100 (Notable)

Counts by Type and Timescale

1,218 records

Records set or tied on 31 August 1986 by type: Highest daily maximum 52, Lowest daily maximum 496, Highest daily minimum 75, Lowest daily minimum 367, Heaviest daily rainfall 228.

Records on 31 August 1986 by type
Record type	Records
Highest daily maximum	52
Lowest daily maximum	496
Highest daily minimum	75
Lowest daily minimum	367
Heaviest daily rainfall	228
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 August 1986 by timescale: all-time 2, monthly 179, daily 1,037.

How Much Records Were Beaten By

935 broken records

Margins by which the 935 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 63.5. Ties are not counted.

Top 20 by Significance

31 August 1986

Top 20 records on 31 August 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 August 1986	Velikie Luki, RU	daily rain	40.9 mm (1.6 in)	25.9 mm (1.0 in)	93 years	76 of 100 (Major)
31 August 1986	San Jon, US	daily rain	75.2 mm (3.0 in)	49.0 mm (1.9 in)	76 years	67 of 100 (Major)
31 August 1986	Conrad, US	daily rain	46.7 mm (1.8 in)	35.3 mm (1.4 in)	64 years	66 of 100 (Major)
31 August 1986	Hobart Muni AP, US	daily rain	87.4 mm (3.4 in)	63.5 mm (2.5 in)	61 years	65 of 100 (Major)
31 August 1986	Newnan 7 WNW, US	daily low max	17.8 C (64.0 F)	7.8 C (14.0 F)	76 years	60 of 100 (Major)
31 August 1986	Choteau, US	daily rain	27.9 mm (1.1 in)	15.2 mm (0.6 in)	89 years	57 of 100 (Notable)
31 August 1986	Dundee 6 NNW, US	daily rain	77.0 mm (3.0 in)	45.8 mm (1.8 in)	53 years	57 of 100 (Notable)
31 August 1986	Galeana, MX	all-time rain	86.9 mm (3.4 in)	22.1 mm (0.9 in)	36 years	56 of 100 (Notable)
31 August 1986	Sayre, US	daily rain	55.9 mm (2.2 in)	53.6 mm (2.1 in)	35 years	55 of 100 (Notable)
31 August 1986	Crow Agency, US	daily rain	56.1 mm (2.2 in)	45.4 mm (1.8 in)	23 years	54 of 100 (Notable)
31 August 1986	Vysnij Volocek, RU	daily rain	35.9 mm (1.4 in)	12.5 mm (0.5 in)	80 years	53 of 100 (Notable)
31 August 1986	Altus Irig Rsch STN, US	daily rain	61.0 mm (2.4 in)	39.2 mm (1.5 in)	69 years	53 of 100 (Notable)
31 August 1986	Rome, US	monthly low max	18.9 C (66.0 F)	2.2 C (4.0 F)	89 years	52 of 100 (Notable)
31 August 1986	Waynesboro 2 S, US	daily low max	18.9 C (66.0 F)	6.1 C (11.0 F)	75 years	52 of 100 (Notable)
31 August 1986	State UNIV, US	monthly low max	20.0 C (68.0 F)	1.7 C (3.1 F)	92 years	52 of 100 (Notable)
31 August 1986	Walnut Canyon Nm, US	daily rain	44.5 mm (1.8 in)	25.2 mm (1.0 in)	23 years	50 of 100 (Notable)
31 August 1986	Deland 1 SSE, US	daily rain	111.5 mm (4.4 in)	51.3 mm (2.0 in)	32 years	50 of 100 (Notable)
31 August 1986	Experiment, US	daily low min	11.1 C (52.0 F)	3.9 C (7.0 F)	77 years	50 of 100 (Notable)
31 August 1986	Matador, US	daily rain	59.7 mm (2.4 in)	51.8 mm (2.0 in)	23 years	50 of 100 (Notable)
31 August 1986	Talbotton, US	monthly low max	18.9 C (66.0 F)	1.1 C (2.0 F)	92 years	49 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

1796 to 1986

Records set or tied on this calendar date in each year from 1796 to 1986. 1986 had 1,218 records.

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

Records on 08-31 in each year
Year	Records
1796	1
1806	1
1807	2
1813	1
1814	1
1816	1
1827	1
1836	1
1846	1
1849	1
1851	1
1856	2
1858	1
1859	1
1860	1
1861	1
1863	1
1867	1
1869	1
1873	1
1875	1
1876	1
1877	2
1879	2
1881	3
1882	2
1885	1
1886	5
1887	1
1889	1
1890	2
1892	3
1893	1
1894	1
1895	1
1896	1
1897	5
1898	10
1899	4
1900	3
1901	5
1902	5
1903	16
1904	13
1905	8
1906	47
1907	6
1908	12
1909	39
1910	20
1911	31
1912	34
1913	40
1914	23
1915	71
1916	7
1917	60
1918	58
1919	25
1920	46
1921	86
1922	58
1923	63
1924	232
1925	111
1926	148
1927	103
1928	201
1929	300
1930	243
1931	192
1932	807
1933	424
1934	381
1935	540
1936	226
1937	508
1938	324
1939	296
1940	400
1941	528
1942	422
1943	650
1944	638
1945	572
1946	545
1947	473
1948	367
1949	409
1950	662
1951	910
1952	388
1953	1,054
1954	633
1955	539
1956	734
1957	317
1958	417
1959	496
1960	366
1961	625
1962	432
1963	415
1964	591
1965	886
1966	830
1967	952
1968	562
1969	474
1970	558
1971	326
1972	287
1973	793
1974	587
1975	658
1976	732
1977	621
1978	891
1979	400
1980	701
1981	692
1982	586
1983	788
1984	866
1985	854
1986	1,218
1987	836
1988	570
1989	622
1990	966
1991	848
1992	1,274
1993	1,286
1994	1,139
1995	1,077
1996	1,451
1997	943
1998	1,163
1999	988
2000	1,545
2001	944
2002	852
2003	1,232
2004	963
2005	1,782
2006	1,147
2007	1,110
2008	870
2009	1,224
2010	1,490
2011	994
2012	932
2013	771
2014	458
2015	1,074
2016	599
2017	596
2018	366
2019	781
2020	737
2021	553
2022	1,191
2023	600
2024	766
2025	307
2026	595

Download the Data

Data for records on 1986-08-31: 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 10	841
10 to 20	50
20 to 30	23
30 to 40	12
40 to 50	4
50 to 60	4
60 to 70	1