Weather Records on 29 August 1977

770 weather records were set or tied worldwide on 29 August 1977. Highest significance: Demjanskoe, RU.

Key Facts for 29 August 1977

On 29 August 1977, 770 weather records were set or tied at long-record stations worldwide.
341 were record highs and 150 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 27 monthly and 737 daily.
Demjanskoe set an all-time record daily precipitation of 70.4 mm (2.8 in) on 29 August 1977.
Across 161 earlier years (1807 to 2026) the same calendar date averaged 449 records.

Record Map

770 stations

770 station records on 29 August 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 29 August 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Demjanskoe	Russia	Record daily precipitation	70.4 mm (2.8 in)	68 of 100 (Major)
Mantova	Italy	Record daily precipitation	47.8 mm (1.9 in)	65 of 100 (Major)
Standish 4NE	United States	Record daily precipitation	48.8 mm (1.9 in)	56 of 100 (Notable)
Pomeroy	United States	Record daily precipitation	35.1 mm (1.4 in)	56 of 100 (Notable)
Pocahontas 1	United States	Record daily precipitation	102.4 mm (4.0 in)	55 of 100 (Notable)
Port Hastings	Canada	Record high maximum temperature	32.8 C (91.0 F)	52 of 100 (Notable)
Mt Vernon 3 NE	United States	Record daily precipitation	81.3 mm (3.2 in)	52 of 100 (Notable)
Fulton	United States	Record daily precipitation	61.5 mm (2.4 in)	52 of 100 (Notable)
Keokuk L&D 19	United States	Record daily precipitation	38.4 mm (1.5 in)	51 of 100 (Notable)
Dundee 6 NNW	United States	Record daily precipitation	52.1 mm (2.1 in)	49 of 100 (Notable)
Eufaula 6 SSW	United States	Record daily precipitation	99.1 mm (3.9 in)	48 of 100 (Notable)
Mannford 6 NW	United States	Record daily precipitation	106.4 mm (4.2 in)	47 of 100 (Notable)
Yeso 2 S	United States	Record daily precipitation	72.4 mm (2.9 in)	46 of 100 (Notable)
Zimnegorskij Majak	Russia	Record daily precipitation	26.9 mm (1.1 in)	45 of 100 (Notable)
Tungokocen	Russia	Record daily precipitation	53.3 mm (2.1 in)	45 of 100 (Notable)
Poteau	United States	Record daily precipitation	101.1 mm (4.0 in)	45 of 100 (Notable)
Sallisaw 2 NW	United States	Record daily precipitation	67.8 mm (2.7 in)	45 of 100 (Notable)
Morgantown Muni AP	United States	Record high minimum temperature	23.3 C (73.9 F)	45 of 100 (Notable)
San Luis Obispo Poly	United States	Record high minimum temperature	20.6 C (69.1 F)	44 of 100 (Notable)
Ft Duchesne	United States	Record low maximum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Bge C Lac Chateauvert	Canada	Record daily precipitation	44.2 mm (1.7 in)	42 of 100 (Notable)
Barrage Gouin	Canada	Record daily precipitation	41.9 mm (1.6 in)	42 of 100 (Notable)
Jabalpur	India	Record daily precipitation	110.0 mm (4.3 in)	42 of 100 (Notable)
Cnory	Georgia	Record daily precipitation	44.0 mm (1.7 in)	41 of 100 (Notable)
St Charles Elm Pt	United States	Record daily precipitation	53.6 mm (2.1 in)	41 of 100 (Notable)
Walgett Council Depot	Australia	Record high maximum temperature	28.6 C (83.5 F)	39 of 100 (Notable)
Forbes (Camp Street)	Australia	Record high maximum temperature	27.0 C (80.6 F)	39 of 100 (Notable)
Berkeley	United States	Record high minimum temperature	18.3 C (64.9 F)	39 of 100 (Notable)
Healdsburg	United States	Record high minimum temperature	21.1 C (70.0 F)	39 of 100 (Notable)
Conchas Dam	United States	Record daily precipitation	41.4 mm (1.6 in)	38 of 100 (Notable)
Usina Tamoio (Bela Vista)	Brazil	Record daily precipitation	41.8 mm (1.6 in)	37 of 100 (Notable)
Arteaga (Smn)	Mexico	Record daily precipitation	159.8 mm (6.3 in)	37 of 100 (Notable)
Ocampo	Mexico	Record daily precipitation	45.0 mm (1.8 in)	37 of 100 (Notable)
Navojoa	Mexico	Record daily precipitation	78.2 mm (3.1 in)	37 of 100 (Notable)
Lindsay 2 W	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)
Startup 1 E	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)
Waterford (Tycor)	Ireland	Record daily precipitation	29.0 mm (1.1 in)	36 of 100 (Notable)
Bucyrus	United States	Record high minimum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Nuri	Mexico	Record daily precipitation	61.0 mm (2.4 in)	35 of 100 (Notable)
Paragould	United States	Record daily precipitation	25.7 mm (1.0 in)	35 of 100 (Notable)
Fredonia	United States	Record daily precipitation	56.1 mm (2.2 in)	35 of 100 (Notable)
Ft Atkinson Wwtp	United States	Record daily precipitation	51.8 mm (2.0 in)	35 of 100 (Notable)
Palmerville	Australia	Record low maximum temperature	27.5 C (81.5 F)	34 of 100 (Routine)
Stockton Fire STN 4	United States	Record high minimum temperature	20.6 C (69.1 F)	34 of 100 (Routine)
Ft Gibson Dam	United States	Record daily precipitation	57.2 mm (2.3 in)	34 of 100 (Routine)
Madill	United States	Record daily precipitation	67.8 mm (2.7 in)	34 of 100 (Routine)
Bourke Post Office	Australia	Record high maximum temperature	29.1 C (84.4 F)	33 of 100 (Routine)
Tambe (Itambe)	Brazil	Record daily precipitation	50.0 mm (2.0 in)	33 of 100 (Routine)
Chico UNIV Farm	United States	Record high minimum temperature	23.3 C (73.9 F)	33 of 100 (Routine)
San Jose	United States	Record high minimum temperature	17.2 C (63.0 F)	33 of 100 (Routine)
Grafton	United States	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Canton L&D 20	United States	Record daily precipitation	35.8 mm (1.4 in)	33 of 100 (Routine)
Fruitland	United States	Record low minimum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
Nowata	United States	Record daily precipitation	74.7 mm (2.9 in)	33 of 100 (Routine)
Lafayette Rgnl AP	United States	Record high minimum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Miramichi A	Canada	Record high minimum temperature	22.9 C (73.2 F)	32 of 100 (Routine)
Caitas de Felipe Pescador	Mexico	Record daily precipitation	39.9 mm (1.6 in)	32 of 100 (Routine)
Farmland 5 NNW	United States	Record high minimum temperature	20.6 C (69.1 F)	32 of 100 (Routine)
Centralia	United States	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Vandalia	United States	Record daily precipitation	45.5 mm (1.8 in)	32 of 100 (Routine)

Counts by Type and Timescale

770 records

Records set or tied on 29 August 1977 by type: Highest daily maximum 121, Lowest daily maximum 88, Highest daily minimum 220, Lowest daily minimum 62, Heaviest daily rainfall 279.

Records on 29 August 1977 by type
Record type	Records
Highest daily maximum	121
Lowest daily maximum	88
Highest daily minimum	220
Lowest daily minimum	62
Heaviest daily rainfall	279
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 29 August 1977 by timescale: all-time 6, monthly 27, daily 737.

How Much Records Were Beaten By

596 broken records

Margins by which the 596 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.7. Ties are not counted.

Top 20 by Significance

29 August 1977

Top 20 records on 29 August 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 August 1977	Demjanskoe, RU	all-time rain	70.4 mm (2.8 in)	21.6 mm (0.9 in)	32 years	68 of 100 (Major)
29 August 1977	Mantova, IT	daily rain	47.8 mm (1.9 in)	26.3 mm (1.0 in)	131 years	65 of 100 (Major)
29 August 1977	Standish 4NE, US	daily rain	48.8 mm (1.9 in)	42.7 mm (1.7 in)	27 years	56 of 100 (Notable)
29 August 1977	Pomeroy, US	monthly rain	35.1 mm (1.4 in)	7.2 mm (0.28 in)	80 years	56 of 100 (Notable)
29 August 1977	Pocahontas 1, US	daily rain	102.4 mm (4.0 in)	46.5 mm (1.8 in)	60 years	55 of 100 (Notable)
29 August 1977	Port Hastings, CA	monthly high max	32.8 C (91.0 F)	1.1 C (2.0 F)	98 years	52 of 100 (Notable)
29 August 1977	Mt Vernon 3 NE, US	daily rain	81.3 mm (3.2 in)	33.8 mm (1.3 in)	81 years	52 of 100 (Notable)
29 August 1977	Fulton, US	daily rain	61.5 mm (2.4 in)	33.8 mm (1.3 in)	68 years	52 of 100 (Notable)
29 August 1977	Keokuk L&D 19, US	daily rain	38.4 mm (1.5 in)	26.2 mm (1.0 in)	81 years	51 of 100 (Notable)
29 August 1977	Dundee 6 NNW, US	daily rain	52.1 mm (2.1 in)	36.1 mm (1.4 in)	52 years	49 of 100 (Notable)
29 August 1977	Eufaula 6 SSW, US	daily rain	99.1 mm (3.9 in)	43.7 mm (1.7 in)	58 years	48 of 100 (Notable)
29 August 1977	Mannford 6 NW, US	daily rain	106.4 mm (4.2 in)	80.7 mm (3.2 in)	14 years	47 of 100 (Notable)
29 August 1977	Yeso 2 S, US	daily rain	72.4 mm (2.9 in)	68.1 mm (2.7 in)	11 years	46 of 100 (Notable)
29 August 1977	Zimnegorskij Majak, RU	daily rain	26.9 mm (1.1 in)	20.0 mm (0.8 in)	40 years	45 of 100 (Notable)
29 August 1977	Tungokocen, RU	daily rain	53.3 mm (2.1 in)	26.4 mm (1.0 in)	24 years	45 of 100 (Notable)
29 August 1977	Poteau, US	monthly rain	101.1 mm (4.0 in)	26.7 mm (1.1 in)	36 years	45 of 100 (Notable)
29 August 1977	Sallisaw 2 NW, US	daily rain	67.8 mm (2.7 in)	37.3 mm (1.5 in)	58 years	45 of 100 (Notable)
29 August 1977	Morgantown Muni AP, US	daily high min	23.3 C (73.9 F)	2.2 C (4.0 F)	96 years	45 of 100 (Notable)
29 August 1977	San Luis Obispo Poly, US	monthly high min	20.6 C (69.1 F)	2.8 C (5.0 F)	42 years	44 of 100 (Notable)
29 August 1977	Ft Duchesne, US	daily low max	15.6 C (60.1 F)	6.6 C (11.9 F)	50 years	44 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 770 records.

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

Records on 08-29 in each year
Year	Records
1807	4
1814	2
1827	1
1834	1
1835	1
1837	1
1839	1
1844	1
1845	1
1850	1
1851	4
1863	1
1864	1
1865	2
1866	1
1869	1
1870	1
1875	1
1877	4
1878	1
1880	1
1881	1
1884	1
1885	3
1886	3
1887	1
1889	1
1891	1
1893	3
1894	6
1895	2
1896	10
1897	4
1898	2
1899	1
1900	1
1901	6
1902	7
1903	21
1904	7
1905	21
1906	14
1907	5
1908	12
1909	25
1910	9
1911	44
1912	36
1913	21
1914	32
1915	36
1916	59
1917	41
1918	28
1919	34
1920	76
1921	102
1922	41
1923	66
1924	250
1925	222
1926	403
1927	214
1928	288
1929	139
1930	170
1931	181
1932	675
1933	435
1934	459
1935	632
1936	297
1937	430
1938	253
1939	332
1940	395
1941	384
1942	654
1943	334
1944	338
1945	390
1946	702
1947	419
1948	1,096
1949	470
1950	557
1951	917
1952	345
1953	1,189
1954	438
1955	365
1956	351
1957	392
1958	240
1959	496
1960	499
1961	501
1962	400
1963	672
1964	483
1965	1,095
1966	463
1967	511
1968	887
1969	691
1970	481
1971	514
1972	635
1973	679
1974	874
1975	517
1976	547
1977	770
1978	755
1979	581
1980	521
1981	869
1982	1,164
1983	883
1984	1,230
1985	551
1986	2,408
1987	659
1988	1,237
1989	728
1990	1,009
1991	806
1992	1,417
1993	1,306
1994	596
1995	1,090
1996	1,056
1997	957
1998	1,452
1999	756
2000	1,076
2001	743
2002	921
2003	964
2004	813
2005	993
2006	1,156
2007	959
2008	716
2009	1,110
2010	1,184
2011	1,252
2012	901
2013	739
2014	419
2015	798
2016	576
2017	1,162
2018	890
2019	789
2020	827
2021	567
2022	437
2023	677
2024	1,047
2025	664
2026	797

Download the Data

Data for records on 1977-08-29: 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	531
20 to 40	55
40 to 60	8
60 to 80	1
80 to 100	1