Weather Records on 27 August 1977

793 weather records were set or tied worldwide on 27 August 1977. Highest significance: Jonkoping, SE.

Key Facts for 27 August 1977

On 27 August 1977, 793 weather records were set or tied at long-record stations worldwide.
350 were record highs and 205 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 19 monthly and 770 daily.
Jonkoping set a daily record precipitation of 32.0 mm (1.3 in) on 27 August 1977.
Across 165 earlier years (1807 to 2026) the same calendar date averaged 435 records.

Record Map

793 stations

793 station records on 27 August 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 August 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jonkoping	Sweden	Record daily precipitation	32.0 mm (1.3 in)	62 of 100 (Major)
Ladysmith 3W	United States	Record daily precipitation	89.9 mm (3.5 in)	57 of 100 (Notable)
Tower 2S	United States	Record daily precipitation	57.2 mm (2.3 in)	56 of 100 (Notable)
Newberry-Luce Co Rd Commission	United States	Record daily precipitation	47.0 mm (1.9 in)	53 of 100 (Notable)
Elk Rvr	United States	Record daily precipitation	109.2 mm (4.3 in)	53 of 100 (Notable)
Weyerhaeuser 1N	United States	Record daily precipitation	89.9 mm (3.5 in)	52 of 100 (Notable)
Taipu	Brazil	Record daily precipitation	60.4 mm (2.4 in)	49 of 100 (Notable)
Creston 2 SW	United States	Record daily precipitation	125.0 mm (4.9 in)	49 of 100 (Notable)
Island Park	United States	Record daily precipitation	30.2 mm (1.2 in)	48 of 100 (Notable)
Campbell	United States	Record daily precipitation	76.7 mm (3.0 in)	48 of 100 (Notable)
Moose Lake 1 SSE	United States	Record daily precipitation	55.1 mm (2.2 in)	48 of 100 (Notable)
Academy 2NE	United States	Record daily precipitation	48.3 mm (1.9 in)	48 of 100 (Notable)
Vale	United States	Record daily precipitation	46.0 mm (1.8 in)	46 of 100 (Notable)
Usugli	Russia	Record daily precipitation	40.2 mm (1.6 in)	45 of 100 (Notable)
Babbitt 2 SE	United States	Record daily precipitation	56.6 mm (2.2 in)	45 of 100 (Notable)
Ekefors	Sweden	Record daily precipitation	35.0 mm (1.4 in)	44 of 100 (Notable)
Landsort	Sweden	Record daily precipitation	39.3 mm (1.5 in)	44 of 100 (Notable)
Ottertail	United States	Record daily precipitation	63.8 mm (2.5 in)	43 of 100 (Notable)
Deer Creek Dam	United States	Record low maximum temperature	15.0 C (59.0 F)	43 of 100 (Notable)
Willmar Wwtp	United States	Record daily precipitation	57.4 mm (2.3 in)	42 of 100 (Notable)
Newell	United States	Record daily precipitation	35.1 mm (1.4 in)	41 of 100 (Notable)
Saint Paul Is AP	United States	Record high maximum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Mc Cormick 9 E	United States	Record daily precipitation	42.7 mm (1.7 in)	40 of 100 (Notable)
Green Rvr	United States	Record low maximum temperature	12.2 C (54.0 F)	39 of 100 (Notable)
Nykopings_Flygplats	Sweden	Record daily precipitation	35.7 mm (1.4 in)	38 of 100 (Notable)
Milaca	United States	Record daily precipitation	35.1 mm (1.4 in)	38 of 100 (Notable)
Logan Utah St UNIV	United States	Record low maximum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Hayward Rs	United States	Record daily precipitation	57.4 mm (2.3 in)	38 of 100 (Notable)
Moosonee Ua	Canada	Record daily precipitation	34.8 mm (1.4 in)	37 of 100 (Notable)
Sosnovo-Ozerskoe	Russia	Record daily precipitation	40.7 mm (1.6 in)	37 of 100 (Notable)
Flahult	Sweden	Record daily precipitation	44.2 mm (1.7 in)	37 of 100 (Notable)
Valley Head	United States	Record high minimum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Jonesboro	United States	Record daily precipitation	60.5 mm (2.4 in)	37 of 100 (Notable)
Newton	United States	Record daily precipitation	61.5 mm (2.4 in)	37 of 100 (Notable)
Carrollton	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Lead	United States	Record daily precipitation	26.4 mm (1.0 in)	37 of 100 (Notable)
Tyler	United States	Record daily precipitation	35.8 mm (1.4 in)	36 of 100 (Notable)
Huichapan	Mexico	Record daily precipitation	49.8 mm (2.0 in)	35 of 100 (Notable)
Alberga	Sweden	Record daily precipitation	32.2 mm (1.3 in)	35 of 100 (Notable)
Gravette	United States	Record high minimum temperature	25.0 C (77.0 F)	35 of 100 (Notable)
Table Rock 4N	United States	Record daily precipitation	50.0 mm (2.0 in)	35 of 100 (Notable)
Wells	United States	Record low maximum temperature	16.7 C (62.1 F)	35 of 100 (Notable)
Alexandria	United States	Record daily precipitation	35.1 mm (1.4 in)	35 of 100 (Notable)
Partoun	United States	Record low maximum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Brule Rs	United States	Record daily precipitation	42.4 mm (1.7 in)	35 of 100 (Notable)
Long Lake Dam	United States	Record daily precipitation	50.3 mm (2.0 in)	35 of 100 (Notable)
Ojo de Agua	Mexico	Record low minimum temperature	10.0 C (50.0 F)	34 of 100 (Routine)
Soraby	Sweden	Record daily precipitation	27.6 mm (1.1 in)	34 of 100 (Routine)
Pocahontas 1	United States	Record high minimum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Cloquet	United States	Record daily precipitation	26.2 mm (1.0 in)	34 of 100 (Routine)
Virginia City	United States	Record low maximum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Amery	United States	Record daily precipitation	77.5 mm (3.1 in)	34 of 100 (Routine)
Border 3 N	United States	Record low maximum temperature	15.0 C (59.0 F)	34 of 100 (Routine)
Cumberland	United States	Record daily precipitation	67.3 mm (2.6 in)	33 of 100 (Routine)
Cameron Falls	Canada	Record daily precipitation	30.7 mm (1.2 in)	32 of 100 (Routine)
Paulistrom	Sweden	Record daily precipitation	30.1 mm (1.2 in)	32 of 100 (Routine)
Britt 3E	United States	Record high minimum temperature	23.3 C (73.9 F)	32 of 100 (Routine)
Heber	United States	Record low maximum temperature	18.3 C (64.9 F)	32 of 100 (Routine)
Laketown	United States	Record low maximum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Myton	United States	Record low maximum temperature	21.7 C (71.1 F)	32 of 100 (Routine)

Counts by Type and Timescale

793 records

Records set or tied on 27 August 1977 by type: Highest daily maximum 45, Lowest daily maximum 159, Highest daily minimum 305, Lowest daily minimum 46, Heaviest daily rainfall 237, Heaviest daily snowfall 1.

Records on 27 August 1977 by type
Record type	Records
Highest daily maximum	45
Lowest daily maximum	159
Highest daily minimum	305
Lowest daily minimum	46
Heaviest daily rainfall	237
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 27 August 1977 by timescale: all-time 4, monthly 19, daily 770.

How Much Records Were Beaten By

593 broken records

Margins by which the 593 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 75.2. Ties are not counted.

Top 20 by Significance

27 August 1977

Top 20 records on 27 August 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 August 1977	Jonkoping, SE	daily rain	32.0 mm (1.3 in)	13.3 mm (0.5 in)	117 years	62 of 100 (Major)
27 August 1977	Ladysmith 3W, US	daily rain	89.9 mm (3.5 in)	62.7 mm (2.5 in)	35 years	57 of 100 (Notable)
27 August 1977	Tower 2S, US	daily rain	57.2 mm (2.3 in)	38.1 mm (1.5 in)	50 years	56 of 100 (Notable)
27 August 1977	Newberry-Luce Co Rd Commission, US	daily rain	47.0 mm (1.9 in)	38.1 mm (1.5 in)	28 years	53 of 100 (Notable)
27 August 1977	Elk Rvr, US	daily rain	109.2 mm (4.3 in)	75.2 mm (3.0 in)	35 years	53 of 100 (Notable)
27 August 1977	Weyerhaeuser 1N, US	daily rain	89.9 mm (3.5 in)	61.2 mm (2.4 in)	16 years	52 of 100 (Notable)
27 August 1977	Taipu, BR	daily rain	60.4 mm (2.4 in)	50.4 mm (2.0 in)	12 years	49 of 100 (Notable)
27 August 1977	Creston 2 SW, US	all-time rain	125.0 mm (4.9 in)	9.4 mm (0.37 in)	54 years	49 of 100 (Notable)
27 August 1977	Island Park, US	daily rain	30.2 mm (1.2 in)	22.8 mm (0.9 in)	31 years	48 of 100 (Notable)
27 August 1977	Campbell, US	daily rain	76.7 mm (3.0 in)	30.0 mm (1.2 in)	50 years	48 of 100 (Notable)
27 August 1977	Moose Lake 1 SSE, US	daily rain	55.1 mm (2.2 in)	38.6 mm (1.5 in)	30 years	48 of 100 (Notable)
27 August 1977	Academy 2NE, US	daily rain	48.3 mm (1.9 in)	35.6 mm (1.4 in)	34 years	48 of 100 (Notable)
27 August 1977	Vale, US	daily rain	46.0 mm (1.8 in)	28.2 mm (1.1 in)	22 years	46 of 100 (Notable)
27 August 1977	Usugli, RU	daily rain	40.2 mm (1.6 in)	26.9 mm (1.1 in)	38 years	45 of 100 (Notable)
27 August 1977	Babbitt 2 SE, US	daily rain	56.6 mm (2.2 in)	41.6 mm (1.6 in)	18 years	45 of 100 (Notable)
27 August 1977	Ekefors, SE	daily rain	35.0 mm (1.4 in)	23.0 mm (0.9 in)	15 years	44 of 100 (Notable)
27 August 1977	Landsort, SE	daily rain	39.3 mm (1.5 in)	18.8 mm (0.7 in)	39 years	44 of 100 (Notable)
27 August 1977	Ottertail, US	daily rain	63.8 mm (2.5 in)	44.7 mm (1.8 in)	35 years	43 of 100 (Notable)
27 August 1977	Deer Creek Dam, US	daily low max	15.0 C (59.0 F)	10.0 C (18.0 F)	30 years	43 of 100 (Notable)
27 August 1977	Willmar Wwtp, US	daily rain	57.4 mm (2.3 in)	33.8 mm (1.3 in)	36 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

1807 to 1977

Records set or tied on this calendar date in each year from 1807 to 1977. 1977 had 793 records.

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

Records on 08-27 in each year
Year	Records
1807	3
1810	1
1811	1
1813	1
1816	1
1827	1
1829	1
1834	1
1846	1
1847	1
1848	1
1854	1
1857	1
1858	1
1859	1
1863	1
1864	3
1865	2
1869	1
1870	1
1871	1
1874	1
1876	1
1877	4
1880	1
1881	2
1882	1
1884	3
1885	2
1886	2
1887	2
1889	1
1890	10
1891	4
1892	1
1894	7
1895	1
1896	4
1899	5
1900	5
1901	6
1902	2
1903	22
1904	4
1905	16
1906	27
1907	9
1908	10
1909	10
1910	6
1911	16
1912	40
1913	10
1914	31
1915	37
1916	106
1917	57
1918	18
1919	78
1920	36
1921	27
1922	52
1923	63
1924	245
1925	102
1926	143
1927	395
1928	197
1929	80
1930	247
1931	205
1932	355
1933	368
1934	249
1935	348
1936	806
1937	679
1938	374
1939	191
1940	468
1941	504
1942	476
1943	581
1944	811
1945	414
1946	345
1947	291
1948	987
1949	475
1950	380
1951	415
1952	402
1953	712
1954	594
1955	485
1956	387
1957	615
1958	213
1959	522
1960	365
1961	365
1962	577
1963	335
1964	400
1965	440
1966	406
1967	887
1968	517
1969	780
1970	1,361
1971	640
1972	722
1973	1,519
1974	722
1975	506
1976	565
1977	793
1978	671
1979	917
1980	478
1981	998
1982	828
1983	823
1984	683
1985	660
1986	1,072
1987	1,356
1988	601
1989	854
1990	761
1991	813
1992	1,657
1993	1,087
1994	696
1995	1,143
1996	968
1997	1,189
1998	1,387
1999	1,258
2000	865
2001	1,304
2002	1,027
2003	916
2004	1,037
2005	733
2006	1,090
2007	958
2008	885
2009	701
2010	1,045
2011	1,518
2012	626
2013	629
2014	582
2015	832
2016	968
2017	838
2018	933
2019	1,013
2020	777
2021	635
2022	470
2023	953
2024	600
2025	1,218
2026	815

Download the Data

Data for records on 1977-08-27: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 10	495
10 to 20	54
20 to 30	24
30 to 40	11
40 to 50	4
50 to 60	2
60 to 70	2
70 to 80	1