Weather Records on 31 August 1985

854 weather records were set or tied worldwide on 31 August 1985. Highest significance: Lupi Upper 442, US.

Key Facts for 31 August 1985

On 31 August 1985, 854 weather records were set or tied at long-record stations worldwide.
383 were record highs and 213 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 41 monthly and 813 daily.
Lupi Upper 442 set a monthly record daily precipitation of 274.3 mm (10.8 in) on 31 August 1985.
Across 165 earlier years (1796 to 2026) the same calendar date averaged 433 records.

Record Map

854 stations

854 station records on 31 August 1985 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 August 1985: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lupi Upper 442	United States	Record daily precipitation	274.3 mm (10.8 in)	63 of 100 (Major)
Jayuya	Puerto Rico [United States]	Record daily precipitation	98.0 mm (3.9 in)	61 of 100 (Major)
Middleboro	United States	Record daily precipitation	80.3 mm (3.2 in)	60 of 100 (Major)
Ipswich	United States	Record daily precipitation	83.1 mm (3.3 in)	59 of 100 (Notable)
Deland 1 SSE	United States	Record high minimum temperature	26.1 C (79.0 F)	50 of 100 (Notable)
Gainesville 3 WSW	United States	Record daily precipitation	97.5 mm (3.8 in)	48 of 100 (Notable)
Hyannis	United States	Record daily precipitation	104.1 mm (4.1 in)	47 of 100 (Notable)
Cornwall	United States	Record low maximum temperature	14.4 C (57.9 F)	47 of 100 (Notable)
Ushibuka	Japan	Record daily precipitation	123.5 mm (4.9 in)	46 of 100 (Notable)
Newberry	United States	Record daily precipitation	52.3 mm (2.1 in)	46 of 100 (Notable)
Finca Cuxtepeques	Mexico	Record daily precipitation	90.4 mm (3.6 in)	45 of 100 (Notable)
Middleton	United States	Record daily precipitation	83.3 mm (3.3 in)	45 of 100 (Notable)
Dimbokro	Cote D'Ivoire	Record daily precipitation	50.0 mm (2.0 in)	43 of 100 (Notable)
Madison	United States	Record low maximum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
Gardiner	United States	Record low maximum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Richland	United States	Record high minimum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
Fazenda da Guarda (Parque)	Brazil	Record daily precipitation	38.0 mm (1.5 in)	42 of 100 (Notable)
Rochester	United States	Record daily precipitation	89.9 mm (3.5 in)	42 of 100 (Notable)
Summerville 4W	United States	Record daily precipitation	79.5 mm (3.1 in)	42 of 100 (Notable)
Athens	United States	Record high maximum temperature	41.1 C (106.0 F)	42 of 100 (Notable)
Leroy 5 WSW	United States	Record high minimum temperature	19.4 C (66.9 F)	40 of 100 (Notable)
Lincolnton	United States	Record daily precipitation	54.1 mm (2.1 in)	40 of 100 (Notable)
Haverhill	United States	Record low maximum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
Guadalupe Y Calvo (Smn)	Mexico	Record daily precipitation	65.5 mm (2.6 in)	39 of 100 (Notable)
Washington	United States	Record high maximum temperature	38.9 C (102.0 F)	38 of 100 (Notable)
Edgartown	United States	Record daily precipitation	153.4 mm (6.0 in)	38 of 100 (Notable)
Hatchville	United States	Record daily precipitation	79.5 mm (3.1 in)	38 of 100 (Notable)
Cross City 1 E	United States	Record daily precipitation	152.4 mm (6.0 in)	37 of 100 (Notable)
Winter Haven	United States	Record low maximum temperature	27.8 C (82.0 F)	37 of 100 (Notable)
Nagasaki	Japan	Record daily precipitation	124.5 mm (4.9 in)	36 of 100 (Notable)
Keanae 346	United States	Record daily precipitation	256.5 mm (10.1 in)	36 of 100 (Notable)
Framingham	United States	Record daily precipitation	38.9 mm (1.5 in)	35 of 100 (Notable)
Clover Valley	United States	Record high minimum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Clearfield	United States	Record daily precipitation	54.6 mm (2.1 in)	35 of 100 (Notable)
Live Oak	United States	Record daily precipitation	74.7 mm (2.9 in)	34 of 100 (Routine)
Doctortown 1 WSW	United States	Record daily precipitation	51.3 mm (2.0 in)	34 of 100 (Routine)
Ft Duchesne	United States	Record high maximum temperature	36.7 C (98.1 F)	34 of 100 (Routine)
Erebango	Brazil	Record daily precipitation	159.7 mm (6.3 in)	33 of 100 (Routine)
Federal Pt	United States	Record low maximum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Live Oak	United States	Record low maximum temperature	24.4 C (75.9 F)	33 of 100 (Routine)
Driggs	United States	Record high minimum temperature	13.9 C (57.0 F)	33 of 100 (Routine)
Laurens	United States	Record daily precipitation	48.3 mm (1.9 in)	33 of 100 (Routine)
Jacksonville Cecil Fld NAS	United States	Record daily precipitation	78.5 mm (3.1 in)	33 of 100 (Routine)
Durham	United States	Record low maximum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Concordia ASOS	United States	Record high maximum temperature	40.0 C (104.0 F)	32 of 100 (Routine)
Gatton Allan Street	Australia	Record daily precipitation	31.0 mm (1.2 in)	31 of 100 (Routine)
Mt Whitestone	Australia	Record daily precipitation	32.2 mm (1.3 in)	31 of 100 (Routine)
Gondar	Ethiopia	Record low maximum temperature	17.3 C (63.1 F)	31 of 100 (Routine)
Holbrook	United States	Record high maximum temperature	37.8 C (100.0 F)	31 of 100 (Routine)
Longmont 2 ESE	United States	Record high minimum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Westcliffe	United States	Record high maximum temperature	31.7 C (89.1 F)	31 of 100 (Routine)
Richfield	United States	Record high maximum temperature	41.1 C (106.0 F)	31 of 100 (Routine)
Moab	United States	Record high maximum temperature	40.0 C (104.0 F)	31 of 100 (Routine)
Buffalo	United States	Record high minimum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Diversion Dam	United States	Record high minimum temperature	16.7 C (62.1 F)	31 of 100 (Routine)
Jacksonville NAS	United States	Record daily precipitation	70.9 mm (2.8 in)	31 of 100 (Routine)
Akron 4 E	United States	Record high maximum temperature	37.8 C (100.0 F)	30 of 100 (Routine)
Lamar	United States	Record high minimum temperature	22.2 C (72.0 F)	30 of 100 (Routine)
Peterboro 2 S	United States	Record low maximum temperature	12.8 C (55.0 F)	30 of 100 (Routine)
Pelion 0.8 NW	United States	Record daily precipitation	69.3 mm (2.7 in)	30 of 100 (Routine)

Counts by Type and Timescale

854 records

Records set or tied on 31 August 1985 by type: Highest daily maximum 196, Lowest daily maximum 145, Highest daily minimum 187, Lowest daily minimum 68, Heaviest daily rainfall 258.

Records on 31 August 1985 by type
Record type	Records
Highest daily maximum	196
Lowest daily maximum	145
Highest daily minimum	187
Lowest daily minimum	68
Heaviest daily rainfall	258
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 August 1985 by timescale: all-time 0, monthly 41, daily 813.

How Much Records Were Beaten By

655 broken records

Margins by which the 655 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 99.2. Ties are not counted.

Top 20 by Significance

31 August 1985

Top 20 records on 31 August 1985 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 August 1985	Lupi Upper 442, US	monthly rain	274.3 mm (10.8 in)	83.0 mm (3.3 in)	40 years	63 of 100 (Major)
31 August 1985	Jayuya, PR	daily rain	98.0 mm (3.9 in)	67.0 mm (2.6 in)	67 years	61 of 100 (Major)
31 August 1985	Middleboro, US	daily rain	80.3 mm (3.2 in)	45.5 mm (1.8 in)	74 years	60 of 100 (Major)
31 August 1985	Ipswich, US	daily rain	83.1 mm (3.3 in)	51.1 mm (2.0 in)	44 years	59 of 100 (Notable)
31 August 1985	Deland 1 SSE, US	daily high min	26.1 C (79.0 F)	2.2 C (4.0 F)	84 years	50 of 100 (Notable)
31 August 1985	Gainesville 3 WSW, US	daily rain	97.5 mm (3.8 in)	65.5 mm (2.6 in)	24 years	48 of 100 (Notable)
31 August 1985	Hyannis, US	daily rain	104.1 mm (4.1 in)	29.4 mm (1.2 in)	74 years	47 of 100 (Notable)
31 August 1985	Cornwall, US	monthly low max	14.4 C (57.9 F)	0.6 C (1.1 F)	90 years	47 of 100 (Notable)
31 August 1985	Ushibuka, JP	daily rain	123.5 mm (4.9 in)	99.2 mm (3.9 in)	27 years	46 of 100 (Notable)
31 August 1985	Newberry, US	daily rain	52.3 mm (2.1 in)	16.7 mm (0.7 in)	91 years	46 of 100 (Notable)
31 August 1985	Finca Cuxtepeques, MX	daily rain	90.4 mm (3.6 in)	57.1 mm (2.2 in)	22 years	45 of 100 (Notable)
31 August 1985	Middleton, US	daily rain	83.3 mm (3.3 in)	44.9 mm (1.8 in)	2 years	45 of 100 (Notable)
31 August 1985	Dimbokro, CI	daily rain	50.0 mm (2.0 in)	26.9 mm (1.1 in)	35 years	43 of 100 (Notable)
31 August 1985	Madison, US	monthly low max	23.3 C (73.9 F)	0.6 C (1.1 F)	74 years	43 of 100 (Notable)
31 August 1985	Gardiner, US	monthly low max	12.8 C (55.0 F)	1.1 C (2.0 F)	70 years	43 of 100 (Notable)
31 August 1985	Richland, US	daily high min	23.3 C (73.9 F)	6.1 C (11.0 F)	66 years	43 of 100 (Notable)
31 August 1985	Fazenda da Guarda (Parque), BR	daily rain	38.0 mm (1.5 in)	31.4 mm (1.2 in)	15 years	42 of 100 (Notable)
31 August 1985	Rochester, US	daily rain	89.9 mm (3.5 in)	57.4 mm (2.3 in)	8 years	42 of 100 (Notable)
31 August 1985	Summerville 4W, US	daily rain	79.5 mm (3.1 in)	27.2 mm (1.1 in)	72 years	42 of 100 (Notable)
31 August 1985	Athens, US	daily high max	41.1 C (106.0 F)	2.8 C (5.0 F)	80 years	42 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 1985

Records set or tied on this calendar date in each year from 1796 to 1985. 1985 had 854 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 1985-08-31: 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 20	610
20 to 40	29
40 to 60	9
60 to 80	3
80 to 100	4