Weather Records on 16 August 1977

831 weather records were set or tied worldwide on 16 August 1977. Highest significance: Yuma Citrus STN, US.

Key Facts for 16 August 1977

On 16 August 1977, 831 weather records were set or tied at long-record stations worldwide.
195 were record highs and 267 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 31 monthly and 795 daily.
Yuma Citrus STN set an all-time record daily precipitation of 109.0 mm (4.3 in) on 16 August 1977.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 464 records.

Record Map

831 stations

831 station records on 16 August 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 16 August 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yuma Citrus STN	United States	Record daily precipitation	109.0 mm (4.3 in)	76 of 100 (Major)
Oxford	United Kingdom	Record daily precipitation	38.0 mm (1.5 in)	72 of 100 (Major)
Luverne	United States	Record daily precipitation	82.8 mm (3.3 in)	72 of 100 (Major)
Yuma Valley	United States	Record daily precipitation	163.8 mm (6.4 in)	68 of 100 (Major)
Elsinore	United States	Record daily precipitation	47.0 mm (1.9 in)	68 of 100 (Major)
Iowa City	United States	Record daily precipitation	88.9 mm (3.5 in)	67 of 100 (Major)
Brawley 2 SW	United States	Record daily precipitation	94.7 mm (3.7 in)	63 of 100 (Major)
Webster City	United States	Record daily precipitation	91.4 mm (3.6 in)	63 of 100 (Major)
Ft Dodge 5NNW	United States	Record daily precipitation	86.9 mm (3.4 in)	62 of 100 (Major)
Trenton Ont Hydro	Canada	Record daily precipitation	67.3 mm (2.6 in)	61 of 100 (Major)
Belle Plaine	United States	Record daily precipitation	152.9 mm (6.0 in)	59 of 100 (Notable)
Charles City	United States	Record daily precipitation	61.0 mm (2.4 in)	59 of 100 (Notable)
Grinnell 3 SW	United States	Record daily precipitation	72.4 mm (2.9 in)	59 of 100 (Notable)
Toledo 3N	United States	Record daily precipitation	148.6 mm (5.9 in)	59 of 100 (Notable)
Boone	United States	Record daily precipitation	66.5 mm (2.6 in)	57 of 100 (Notable)
Fairmont	United States	Record daily precipitation	89.9 mm (3.5 in)	57 of 100 (Notable)
Aquidaba	Brazil	Record daily precipitation	50.4 mm (2.0 in)	55 of 100 (Notable)
Dumont	United States	Record daily precipitation	97.3 mm (3.8 in)	55 of 100 (Notable)
Estherville 4E	United States	Record daily precipitation	63.5 mm (2.5 in)	55 of 100 (Notable)
Cedar Rapids #1	United States	Record daily precipitation	86.6 mm (3.4 in)	54 of 100 (Notable)
Niland	United States	Record daily precipitation	62.5 mm (2.5 in)	53 of 100 (Notable)
Lucknow	Canada	Record daily precipitation	99.8 mm (3.9 in)	52 of 100 (Notable)
St Andrews	Canada	Record daily precipitation	33.0 mm (1.3 in)	51 of 100 (Notable)
N Loup	United States	Record daily precipitation	64.8 mm (2.6 in)	51 of 100 (Notable)
Rio Pequeno	Brazil	Record daily precipitation	50.0 mm (2.0 in)	50 of 100 (Notable)
Williamsburg 1E	United States	Record daily precipitation	81.3 mm (3.2 in)	50 of 100 (Notable)
Clarion	United States	Record daily precipitation	64.8 mm (2.6 in)	49 of 100 (Notable)
Montezuma 1 W	United States	Record daily precipitation	80.8 mm (3.2 in)	49 of 100 (Notable)
Traipu	Brazil	Record daily precipitation	46.6 mm (1.8 in)	48 of 100 (Notable)
Lagarto	Brazil	Record daily precipitation	26.0 mm (1.0 in)	48 of 100 (Notable)
Minjilky	Kazakhstan	Record daily precipitation	39.5 mm (1.6 in)	48 of 100 (Notable)
Jefferson	United States	Record daily precipitation	57.9 mm (2.3 in)	47 of 100 (Notable)
Durham	Canada	Record daily precipitation	63.5 mm (2.5 in)	46 of 100 (Notable)
Ust-Koksa	Russia	Record daily precipitation	33.7 mm (1.3 in)	45 of 100 (Notable)
Rothamsted	United Kingdom	Record daily precipitation	28.7 mm (1.1 in)	45 of 100 (Notable)
Newport	United States	Record high maximum temperature	26.7 C (80.1 F)	45 of 100 (Notable)
N Is NAS	United States	Record daily precipitation	33.0 mm (1.3 in)	45 of 100 (Notable)
Major Gercino	Brazil	Record daily precipitation	58.4 mm (2.3 in)	44 of 100 (Notable)
Port Dalhousie	Canada	Record daily precipitation	35.0 mm (1.4 in)	44 of 100 (Notable)
Belleville	Canada	Record low maximum temperature	18.0 C (64.4 F)	44 of 100 (Notable)
Dijon-Longvic	France	Record daily precipitation	34.1 mm (1.3 in)	44 of 100 (Notable)
Palm Springs	United States	Record low maximum temperature	27.8 C (82.0 F)	44 of 100 (Notable)
Trombudo Central	Brazil	Record daily precipitation	47.2 mm (1.9 in)	43 of 100 (Notable)
Mount Forest	Canada	Record daily precipitation	81.2 mm (3.2 in)	43 of 100 (Notable)
Gadag	India	Record daily precipitation	53.1 mm (2.1 in)	43 of 100 (Notable)
Kara-Tjurek	Russia	Record daily precipitation	31.4 mm (1.2 in)	43 of 100 (Notable)
Anamosa 1 WNW	United States	Record daily precipitation	72.1 mm (2.8 in)	43 of 100 (Notable)
Kanawha	United States	Record daily precipitation	93.2 mm (3.7 in)	43 of 100 (Notable)
Taio (Pcd)	Brazil	Record daily precipitation	75.3 mm (3.0 in)	42 of 100 (Notable)
Iowa Falls	United States	Record daily precipitation	56.1 mm (2.2 in)	42 of 100 (Notable)
Marshalltown	United States	Record daily precipitation	140.7 mm (5.5 in)	42 of 100 (Notable)
Chamberlain	United States	Record daily precipitation	27.9 mm (1.1 in)	42 of 100 (Notable)
Beatrice	Canada	Record low maximum temperature	14.0 C (57.2 F)	41 of 100 (Notable)
Morris W Cntrl Rsch & Outreach	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Monticello 2E	United States	Record daily precipitation	32.0 mm (1.3 in)	41 of 100 (Notable)
Mexicali (Smn)	Mexico	Record daily precipitation	40.4 mm (1.6 in)	40 of 100 (Notable)
Presa Rodriguez	Mexico	Record daily precipitation	49.0 mm (1.9 in)	40 of 100 (Notable)
Ongudaj	Russia	Record daily precipitation	29.4 mm (1.2 in)	40 of 100 (Notable)
Mormon Flat	United States	Record daily precipitation	56.4 mm (2.2 in)	40 of 100 (Notable)
Window Rock 4 SW	United States	Record daily precipitation	43.2 mm (1.7 in)	40 of 100 (Notable)

Counts by Type and Timescale

831 records

Records set or tied on 16 August 1977 by type: Highest daily maximum 81, Lowest daily maximum 191, Highest daily minimum 114, Lowest daily minimum 76, Heaviest daily rainfall 369.

Records on 16 August 1977 by type
Record type	Records
Highest daily maximum	81
Lowest daily maximum	191
Highest daily minimum	114
Lowest daily minimum	76
Heaviest daily rainfall	369
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 16 August 1977 by timescale: all-time 5, monthly 31, daily 795.

How Much Records Were Beaten By

679 broken records

Margins by which the 679 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 123.2. Ties are not counted.

Top 20 by Significance

16 August 1977

Top 20 records on 16 August 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 August 1977	Yuma Citrus STN, US	all-time rain	109.0 mm (4.3 in)	33.1 mm (1.3 in)	55 years	76 of 100 (Major)
16 August 1977	Oxford, GB	daily rain	38.0 mm (1.5 in)	20.2 mm (0.8 in)	97 years	72 of 100 (Major)
16 August 1977	Luverne, US	daily rain	82.8 mm (3.3 in)	62.0 mm (2.4 in)	81 years	72 of 100 (Major)
16 August 1977	Yuma Valley, US	all-time rain	163.8 mm (6.4 in)	114.3 mm (4.5 in)	13 years	68 of 100 (Major)
16 August 1977	Elsinore, US	monthly rain	47.0 mm (1.9 in)	18.6 mm (0.7 in)	73 years	68 of 100 (Major)
16 August 1977	Iowa City, US	daily rain	88.9 mm (3.5 in)	48.8 mm (1.9 in)	83 years	67 of 100 (Major)
16 August 1977	Brawley 2 SW, US	monthly rain	94.7 mm (3.7 in)	49.0 mm (1.9 in)	25 years	63 of 100 (Major)
16 August 1977	Webster City, US	daily rain	91.4 mm (3.6 in)	55.1 mm (2.2 in)	50 years	63 of 100 (Major)
16 August 1977	Ft Dodge 5NNW, US	daily rain	86.9 mm (3.4 in)	59.0 mm (2.3 in)	54 years	62 of 100 (Major)
16 August 1977	Trenton Ont Hydro, CA	daily rain	67.3 mm (2.6 in)	38.9 mm (1.5 in)	58 years	61 of 100 (Major)
16 August 1977	Belle Plaine, US	daily rain	152.9 mm (6.0 in)	123.2 mm (4.9 in)	39 years	59 of 100 (Notable)
16 August 1977	Charles City, US	daily rain	61.0 mm (2.4 in)	34.3 mm (1.4 in)	80 years	59 of 100 (Notable)
16 August 1977	Grinnell 3 SW, US	daily rain	72.4 mm (2.9 in)	54.6 mm (2.1 in)	70 years	59 of 100 (Notable)
16 August 1977	Toledo 3N, US	daily rain	148.6 mm (5.9 in)	118.1 mm (4.6 in)	39 years	59 of 100 (Notable)
16 August 1977	Boone, US	daily rain	66.5 mm (2.6 in)	43.9 mm (1.7 in)	67 years	57 of 100 (Notable)
16 August 1977	Fairmont, US	daily rain	89.9 mm (3.5 in)	45.4 mm (1.8 in)	59 years	57 of 100 (Notable)
16 August 1977	Aquidaba, BR	daily rain	50.4 mm (2.0 in)	26.4 mm (1.0 in)	51 years	55 of 100 (Notable)
16 August 1977	Dumont, US	daily rain	97.3 mm (3.8 in)	71.9 mm (2.8 in)	39 years	55 of 100 (Notable)
16 August 1977	Estherville 4E, US	daily rain	63.5 mm (2.5 in)	31.2 mm (1.2 in)	81 years	55 of 100 (Notable)
16 August 1977	Cedar Rapids #1, US	daily rain	86.6 mm (3.4 in)	31.5 mm (1.2 in)	83 years	54 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 831 records.

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

Records on 08-16 in each year
Year	Records
1793	1
1802	2
1811	1
1827	1
1833	1
1835	1
1838	1
1841	1
1844	2
1850	1
1856	1
1861	2
1862	1
1863	1
1868	2
1869	1
1871	1
1873	1
1875	2
1876	5
1878	1
1879	3
1880	2
1882	2
1883	2
1885	4
1886	1
1887	2
1888	5
1890	5
1891	2
1893	6
1894	1
1895	4
1896	5
1897	4
1898	6
1899	2
1900	3
1901	7
1902	5
1903	12
1904	9
1905	9
1906	11
1907	20
1908	31
1909	25
1910	14
1911	16
1912	30
1913	88
1914	10
1915	32
1916	147
1917	27
1918	72
1919	13
1920	144
1921	42
1922	148
1923	135
1924	139
1925	92
1926	165
1927	314
1928	207
1929	509
1930	158
1931	336
1932	348
1933	260
1934	504
1935	496
1936	728
1937	818
1938	700
1939	340
1940	287
1941	371
1942	447
1943	579
1944	467
1945	370
1946	313
1947	477
1948	342
1949	345
1950	305
1951	423
1952	552
1953	558
1954	648
1955	558
1956	413
1957	402
1958	1,013
1959	354
1960	518
1961	866
1962	423
1963	897
1964	831
1965	565
1966	433
1967	829
1968	824
1969	684
1970	386
1971	641
1972	997
1973	592
1974	689
1975	766
1976	1,153
1977	831
1978	835
1979	1,698
1980	855
1981	766
1982	516
1983	1,251
1984	662
1985	1,063
1986	811
1987	1,120
1988	1,594
1989	730
1990	702
1991	601
1992	2,027
1993	820
1994	1,075
1995	1,542
1996	678
1997	1,284
1998	865
1999	697
2000	873
2001	1,136
2002	1,258
2003	1,220
2004	1,239
2005	813
2006	894
2007	1,442
2008	1,183
2009	1,128
2010	1,239
2011	896
2012	670
2013	770
2014	640
2015	841
2016	786
2017	672
2018	412
2019	430
2020	1,382
2021	825
2022	1,145
2023	1,354
2024	765
2025	661
2026	661

Download the Data

Data for records on 1977-08-16: 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	599
20 to 40	56
40 to 60	19
60 to 80	2
80 to 100	0
100 to 120	2
120 to 140	1