Weather Records on 14 August 1977

562 weather records were set or tied worldwide on 14 August 1977. Highest significance: Waiawa 943, US.

Key Facts for 14 August 1977

On 14 August 1977, 562 weather records were set or tied at long-record stations worldwide.
208 were record highs and 134 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 20 monthly and 539 daily.
Waiawa 943 set a daily record precipitation of 43.2 mm (1.7 in) on 14 August 1977.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 462 records.

Record Map

562 stations

562 station records on 14 August 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 14 August 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Waiawa 943	United States	Record daily precipitation	43.2 mm (1.7 in)	59 of 100 (Notable)
Madisonville	United States	Record daily precipitation	170.9 mm (6.7 in)	58 of 100 (Notable)
Santa Gertrudis	Mexico	Record daily precipitation	182.9 mm (7.2 in)	53 of 100 (Notable)
Melrose	United States	Record daily precipitation	54.6 mm (2.1 in)	49 of 100 (Notable)
Todos Santos (Dge)	Mexico	Record daily precipitation	57.4 mm (2.3 in)	48 of 100 (Notable)
New Iberia AP - Acadiana Rgnl	United States	Record daily precipitation	70.1 mm (2.8 in)	47 of 100 (Notable)
Glasgow	United States	Record daily precipitation	54.4 mm (2.1 in)	45 of 100 (Notable)
W Liberty 3NW	United States	Record daily precipitation	73.9 mm (2.9 in)	45 of 100 (Notable)
Ashland	United States	Record daily precipitation	69.1 mm (2.7 in)	44 of 100 (Notable)
Loreto	Mexico	Record daily precipitation	103.0 mm (4.1 in)	42 of 100 (Notable)
Loreto (Dge)	Mexico	Record daily precipitation	102.9 mm (4.1 in)	42 of 100 (Notable)
San Jose del Cabo	Mexico	Record daily precipitation	105.9 mm (4.2 in)	42 of 100 (Notable)
Santa Rosa	United States	Record daily precipitation	47.0 mm (1.9 in)	42 of 100 (Notable)
Hungry Horse Dam	United States	Record daily precipitation	27.7 mm (1.1 in)	41 of 100 (Notable)
Sparta Wwtp	United States	Record daily precipitation	45.2 mm (1.8 in)	40 of 100 (Notable)
Hogsett Rc Byrd Dam	United States	Record daily precipitation	42.4 mm (1.7 in)	40 of 100 (Notable)
Comondu	Mexico	Record daily precipitation	86.4 mm (3.4 in)	38 of 100 (Notable)
La Ribera	Mexico	Record daily precipitation	59.9 mm (2.4 in)	38 of 100 (Notable)
Vincennes 4 E	United States	Record daily precipitation	60.2 mm (2.4 in)	38 of 100 (Notable)
Tullahoma	United States	Record daily precipitation	39.4 mm (1.6 in)	38 of 100 (Notable)
Kermit	United States	Record daily precipitation	105.4 mm (4.1 in)	38 of 100 (Notable)
Tucson WFO	United States	Record high minimum temperature	27.2 C (81.0 F)	37 of 100 (Notable)
Ft Duchesne	United States	Record high minimum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Cabo San Lucas	Mexico	Record daily precipitation	174.0 mm (6.9 in)	36 of 100 (Notable)
San Pedro	Mexico	Record low maximum temperature	26.7 C (80.1 F)	36 of 100 (Notable)
Vanceburg	United States	Record daily precipitation	68.6 mm (2.7 in)	36 of 100 (Notable)
Williston Sloulin Fld	United States	Record low minimum temperature	3.3 C (37.9 F)	36 of 100 (Notable)
Caduao	Mexico	Record daily precipitation	99.8 mm (3.9 in)	35 of 100 (Notable)
La Purisima	Mexico	Record daily precipitation	34.8 mm (1.4 in)	35 of 100 (Notable)
El Chico	Mexico	Record daily precipitation	64.3 mm (2.5 in)	35 of 100 (Notable)
Omak 4 N	United States	Record high minimum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Bella Coola	Canada	Record high maximum temperature	31.5 C (88.7 F)	34 of 100 (Routine)
Fords Ferry Dam 5O	United States	Record daily precipitation	54.6 mm (2.1 in)	34 of 100 (Routine)
Shelbyville 1 E	United States	Record daily precipitation	40.4 mm (1.6 in)	34 of 100 (Routine)
Waynesburg 7 NE	United States	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Jasper	United States	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Redington	United States	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Sidney	United States	Record low minimum temperature	2.2 C (36.0 F)	33 of 100 (Routine)
Mokpo	Korea, South	Record low minimum temperature	18.3 C (64.9 F)	32 of 100 (Routine)
Pocomoke City	United States	Record high minimum temperature	25.6 C (78.1 F)	32 of 100 (Routine)
Babb 6 NE	United States	Record daily precipitation	34.0 mm (1.3 in)	32 of 100 (Routine)
Hemlock	United States	Record low minimum temperature	7.8 C (46.0 F)	32 of 100 (Routine)
Buckingham	United States	Record daily precipitation	29.2 mm (1.1 in)	32 of 100 (Routine)
Sedro-Woolley	United States	Record high maximum temperature	31.1 C (88.0 F)	32 of 100 (Routine)
Tallahassee	United States	Record low maximum temperature	25.0 C (77.0 F)	32 of 100 (Routine)
Cape St James	Canada	Record high maximum temperature	23.3 C (73.9 F)	31 of 100 (Routine)
Regina Int'l A	Canada	Record low minimum temperature	3.1 C (37.6 F)	31 of 100 (Routine)
Heppner	United States	Record high minimum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Kanalohuluhulu 1075	United States	Record daily precipitation	33.0 mm (1.3 in)	31 of 100 (Routine)
Puerto Madero	Mexico	Record low minimum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
El Nogal	Mexico	Record low maximum temperature	16.1 C (61.0 F)	30 of 100 (Routine)
Puerto Vallarta	Mexico	Record low maximum temperature	25.6 C (78.1 F)	30 of 100 (Routine)
San Blas	Mexico	Record low maximum temperature	27.8 C (82.0 F)	30 of 100 (Routine)
Canon City	United States	Record daily precipitation	25.7 mm (1.0 in)	30 of 100 (Routine)
Gladstone L/D 18	United States	Record daily precipitation	34.5 mm (1.4 in)	30 of 100 (Routine)
Auburn 5 ESE	United States	Record daily precipitation	70.6 mm (2.8 in)	30 of 100 (Routine)
Condon	United States	Record high minimum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Everett	United States	Record high maximum temperature	29.4 C (84.9 F)	30 of 100 (Routine)
Winfield Locks	United States	Record daily precipitation	36.6 mm (1.4 in)	30 of 100 (Routine)
Kamloops	Canada	Record high minimum temperature	20.6 C (69.1 F)	29 of 100 (Routine)

Counts by Type and Timescale

562 records

Records set or tied on 14 August 1977 by type: Highest daily maximum 68, Lowest daily maximum 72, Highest daily minimum 140, Lowest daily minimum 62, Heaviest daily rainfall 220.

Records on 14 August 1977 by type
Record type	Records
Highest daily maximum	68
Lowest daily maximum	72
Highest daily minimum	140
Lowest daily minimum	62
Heaviest daily rainfall	220
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 14 August 1977 by timescale: all-time 3, monthly 20, daily 539.

How Much Records Were Beaten By

434 broken records

Margins by which the 434 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 93.5. Ties are not counted.

Top 20 by Significance

14 August 1977

Top 20 records on 14 August 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
14 August 1977	Waiawa 943, US	daily rain	43.2 mm (1.7 in)	28.7 mm (1.1 in)	59 years	59 of 100 (Notable)
14 August 1977	Madisonville, US	monthly rain	170.9 mm (6.7 in)	84.0 mm (3.3 in)	18 years	58 of 100 (Notable)
14 August 1977	Santa Gertrudis, MX	monthly rain	182.9 mm (7.2 in)	93.5 mm (3.7 in)	0 years	53 of 100 (Notable)
14 August 1977	Melrose, US	daily rain	54.6 mm (2.1 in)	28.4 mm (1.1 in)	67 years	49 of 100 (Notable)
14 August 1977	Todos Santos (Dge), MX	daily rain	57.4 mm (2.3 in)	57.1 mm (2.2 in)	18 years	48 of 100 (Notable)
14 August 1977	New Iberia AP - Acadiana Rgnl, US	daily rain	70.1 mm (2.8 in)	35.3 mm (1.4 in)	62 years	47 of 100 (Notable)
14 August 1977	Glasgow, US	daily rain	54.4 mm (2.1 in)	34.1 mm (1.3 in)	56 years	45 of 100 (Notable)
14 August 1977	W Liberty 3NW, US	daily rain	73.9 mm (2.9 in)	49.0 mm (1.9 in)	11 years	45 of 100 (Notable)
14 August 1977	Ashland, US	daily rain	69.1 mm (2.7 in)	43.7 mm (1.7 in)	8 years	44 of 100 (Notable)
14 August 1977	Loreto, MX	monthly rain	103.0 mm (4.1 in)	40.5 mm (1.6 in)	9 years	42 of 100 (Notable)
14 August 1977	Loreto (Dge), MX	monthly rain	102.9 mm (4.1 in)	40.4 mm (1.6 in)	9 years	42 of 100 (Notable)
14 August 1977	San Jose del Cabo, MX	daily rain	105.9 mm (4.2 in)	87.9 mm (3.5 in)	32 years	42 of 100 (Notable)
14 August 1977	Santa Rosa, US	daily rain	47.0 mm (1.9 in)	23.6 mm (0.9 in)	59 years	42 of 100 (Notable)
14 August 1977	Hungry Horse Dam, US	daily rain	27.7 mm (1.1 in)	24.9 mm (1.0 in)	14 years	41 of 100 (Notable)
14 August 1977	Sparta Wwtp, US	daily rain	45.2 mm (1.8 in)	37.1 mm (1.5 in)	36 years	40 of 100 (Notable)
14 August 1977	Hogsett Rc Byrd Dam, US	daily rain	42.4 mm (1.7 in)	25.9 mm (1.0 in)	36 years	40 of 100 (Notable)
14 August 1977	Comondu, MX	all-time rain	86.4 mm (3.4 in)	4.1 mm (0.16 in)	38 years	38 of 100 (Notable)
14 August 1977	La Ribera, MX	daily rain	59.9 mm (2.4 in)	45.7 mm (1.8 in)	18 years	38 of 100 (Notable)
14 August 1977	Vincennes 4 E, US	daily rain	60.2 mm (2.4 in)	29.7 mm (1.2 in)	32 years	38 of 100 (Notable)
14 August 1977	Tullahoma, US	daily rain	39.4 mm (1.6 in)	14.0 mm (0.6 in)	66 years	38 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

1793 to 1977

Records set or tied on this calendar date in each year from 1793 to 1977. 1977 had 562 records.

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

Records on 08-14 in each year
Year	Records
1793	2
1807	1
1815	1
1818	1
1825	1
1833	2
1839	1
1841	1
1843	1
1845	2
1856	2
1857	1
1859	1
1861	1
1864	3
1865	1
1866	2
1868	1
1870	1
1871	1
1872	1
1873	1
1874	1
1876	4
1882	1
1884	1
1885	3
1886	1
1887	3
1889	2
1890	1
1891	1
1892	3
1893	2
1894	2
1895	3
1896	5
1897	5
1898	2
1899	2
1900	1
1901	1
1902	8
1903	8
1904	3
1905	10
1906	8
1907	6
1908	28
1909	35
1910	10
1911	30
1912	56
1913	24
1914	16
1915	17
1916	109
1917	38
1918	60
1919	103
1920	56
1921	61
1922	54
1923	92
1924	319
1925	128
1926	182
1927	147
1928	233
1929	449
1930	627
1931	410
1932	314
1933	349
1934	470
1935	314
1936	612
1937	354
1938	519
1939	376
1940	489
1941	467
1942	364
1943	583
1944	709
1945	572
1946	511
1947	658
1948	373
1949	374
1950	402
1951	458
1952	560
1953	312
1954	457
1955	535
1956	426
1957	281
1958	421
1959	495
1960	414
1961	663
1962	885
1963	811
1964	1,394
1965	451
1966	388
1967	902
1968	1,315
1969	482
1970	398
1971	677
1972	552
1973	489
1974	542
1975	461
1976	1,060
1977	562
1978	834
1979	1,115
1980	544
1981	719
1982	539
1983	775
1984	598
1985	1,095
1986	775
1987	1,157
1988	1,301
1989	728
1990	737
1991	856
1992	1,709
1993	887
1994	1,149
1995	1,444
1996	954
1997	922
1998	1,100
1999	1,329
2000	1,117
2001	806
2002	1,576
2003	1,913
2004	1,936
2005	1,340
2006	1,073
2007	1,340
2008	798
2009	818
2010	1,704
2011	772
2012	758
2013	612
2014	651
2015	931
2016	824
2017	559
2018	397
2019	578
2020	1,009
2021	932
2022	771
2023	1,116
2024	1,045
2025	798
2026	1,211

Download the Data

Data for records on 1977-08-14: 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	392
20 to 40	30
40 to 60	9
60 to 80	0
80 to 100	3