Weather Records on 22 May 1977

648 weather records were set or tied worldwide on 22 May 1977. Highest significance: Lake Margaret Dam, AU.

Key Facts for 22 May 1977

On 22 May 1977, 648 weather records were set or tied at long-record stations worldwide.
409 were record highs and 83 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 53 monthly and 592 daily.
Lake Margaret Dam set a daily record precipitation of 113.5 mm (4.5 in) on 22 May 1977.
Across 160 earlier years (1806 to 2026) the same calendar date averaged 444 records.

Record Map

648 stations

648 station records on 22 May 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 22 May 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lake Margaret Dam	Australia	Record daily precipitation	113.5 mm (4.5 in)	63 of 100 (Major)
Atoyac (Smn)	Mexico	Record daily precipitation	60.5 mm (2.4 in)	53 of 100 (Notable)
Mayville	United States	Record daily precipitation	52.6 mm (2.1 in)	50 of 100 (Notable)
Woodstock	Canada	Record high maximum temperature	35.6 C (96.1 F)	46 of 100 (Notable)
Ravenna	United States	Record daily precipitation	85.6 mm (3.4 in)	46 of 100 (Notable)
Pointe Au Pere	Canada	Record high maximum temperature	28.3 C (82.9 F)	45 of 100 (Notable)
Witelsbos (Bos)	South Africa	Record daily precipitation	62.0 mm (2.4 in)	44 of 100 (Notable)
Port Alfred	South Africa	Record daily precipitation	38.0 mm (1.5 in)	43 of 100 (Notable)
St George	Canada	Record high maximum temperature	38.0 C (100.4 F)	42 of 100 (Notable)
Miller	United States	Record daily precipitation	38.9 mm (1.5 in)	40 of 100 (Notable)
Mellen 4 NE	United States	Record daily precipitation	48.8 mm (1.9 in)	40 of 100 (Notable)
Huntingdon	Canada	Record high maximum temperature	32.2 C (90.0 F)	39 of 100 (Notable)
Springview 2NW	United States	Record daily precipitation	35.6 mm (1.4 in)	39 of 100 (Notable)
Durham	Canada	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
Tadoussac	Canada	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
La Pocatiere Cda	Canada	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
Tarwin Lower (Riverside)	Australia	Record daily precipitation	26.8 mm (1.1 in)	36 of 100 (Notable)
Lucknow	Canada	Record high maximum temperature	32.8 C (91.0 F)	36 of 100 (Notable)
La Pocatiere Cda	Canada	Record high minimum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
John Martin Dam	United States	Record daily precipitation	50.3 mm (2.0 in)	36 of 100 (Notable)
Wallace 2W	United States	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
San Remo	Australia	Record daily precipitation	28.0 mm (1.1 in)	35 of 100 (Notable)
Wonthaggi	Australia	Record daily precipitation	29.0 mm (1.1 in)	35 of 100 (Notable)
Fish Creek (Hoddle Range)	Australia	Record daily precipitation	40.0 mm (1.6 in)	34 of 100 (Routine)
Inverloch	Australia	Record daily precipitation	30.8 mm (1.2 in)	34 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	10.0 C (50.0 F)	34 of 100 (Routine)
Moncton	Canada	Record high maximum temperature	33.9 C (93.0 F)	34 of 100 (Routine)
Parrsboro	Canada	Record high maximum temperature	29.0 C (84.2 F)	34 of 100 (Routine)
Kyra	Russia	Record daily precipitation	25.2 mm (1.0 in)	34 of 100 (Routine)
Mc Cook	United States	Record daily precipitation	40.6 mm (1.6 in)	34 of 100 (Routine)
Franklinville	United States	Record high maximum temperature	32.2 C (90.0 F)	34 of 100 (Routine)
Fort McPherson	Canada	Record low maximum temperature	-3.3 C (26.1 F)	33 of 100 (Routine)
La Malbaie	Canada	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Nicosia	Cyprus	Record high minimum temperature	19.0 C (66.2 F)	33 of 100 (Routine)
Frankfort 2NE	United States	Record high minimum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Chambers	United States	Record daily precipitation	36.3 mm (1.4 in)	33 of 100 (Routine)
Arcade	United States	Record high maximum temperature	31.7 C (89.1 F)	33 of 100 (Routine)
Illalangi	Australia	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
Pickle Lake (Aut)	Canada	Record daily precipitation	26.8 mm (1.1 in)	32 of 100 (Routine)
Gagetown 2	Canada	Record high maximum temperature	34.0 C (93.2 F)	32 of 100 (Routine)
Griggsville	United States	Record high minimum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Presque Isle	United States	Record high maximum temperature	32.8 C (91.0 F)	32 of 100 (Routine)
Mc Leod 3 E	United States	Record daily precipitation	38.6 mm (1.5 in)	32 of 100 (Routine)
Chamberlain	United States	Record daily precipitation	59.7 mm (2.4 in)	32 of 100 (Routine)
Queenstown (Copper Mine)	Australia	Record daily precipitation	70.8 mm (2.8 in)	31 of 100 (Routine)
Kenora A	Canada	Record daily precipitation	29.0 mm (1.1 in)	31 of 100 (Routine)
Montreal McGill	Canada	Record high maximum temperature	31.7 C (89.1 F)	31 of 100 (Routine)
Nicolet	Canada	Record high maximum temperature	32.8 C (91.0 F)	31 of 100 (Routine)
Harrington Harbour	Canada	Record high maximum temperature	18.8 C (65.8 F)	31 of 100 (Routine)
Galeana (Smn)	Mexico	Record high minimum temperature	23.9 C (75.0 F)	31 of 100 (Routine)
Imeny_T.G.Shevchenko	Ukraine	Record daily precipitation	44.3 mm (1.7 in)	31 of 100 (Routine)
Carbondale Sewage Plt	United States	Record high minimum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Ottawa 4SW	United States	Record high minimum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Delphi 2 N	United States	Record high minimum temperature	21.1 C (70.0 F)	31 of 100 (Routine)
Farmland 5 NNW	United States	Record high minimum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Baldwin	United States	Record high minimum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Milbank 4 NW	United States	Record daily precipitation	29.2 mm (1.1 in)	31 of 100 (Routine)
Drummondville	Canada	Record high maximum temperature	33.9 C (93.0 F)	30 of 100 (Routine)
Sorel	Canada	Record high maximum temperature	33.3 C (91.9 F)	30 of 100 (Routine)
Chicoutimi	Canada	Record high maximum temperature	33.3 C (91.9 F)	30 of 100 (Routine)

Counts by Type and Timescale

648 records

Records set or tied on 22 May 1977 by type: Highest daily maximum 221, Lowest daily maximum 47, Highest daily minimum 188, Lowest daily minimum 36, Heaviest daily rainfall 154, Heaviest daily snowfall 2.

Records on 22 May 1977 by type
Record type	Records
Highest daily maximum	221
Lowest daily maximum	47
Highest daily minimum	188
Lowest daily minimum	36
Heaviest daily rainfall	154
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 22 May 1977 by timescale: all-time 3, monthly 53, daily 592.

How Much Records Were Beaten By

520 broken records

Margins by which the 520 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 70.3. Ties are not counted.

Top 20 by Significance

22 May 1977

Top 20 records on 22 May 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 May 1977	Lake Margaret Dam, AU	daily rain	113.5 mm (4.5 in)	70.3 mm (2.8 in)	59 years	63 of 100 (Major)
22 May 1977	Atoyac (Smn), MX	daily rain	60.5 mm (2.4 in)	55.7 mm (2.2 in)	51 years	53 of 100 (Notable)
22 May 1977	Mayville, US	daily rain	52.6 mm (2.1 in)	30.2 mm (1.2 in)	31 years	50 of 100 (Notable)
22 May 1977	Woodstock, CA	monthly high max	35.6 C (96.1 F)	0.6 C (1.1 F)	88 years	46 of 100 (Notable)
22 May 1977	Ravenna, US	daily rain	85.6 mm (3.4 in)	42.2 mm (1.7 in)	12 years	46 of 100 (Notable)
22 May 1977	Pointe Au Pere, CA	monthly high max	28.3 C (82.9 F)	1.6 C (2.9 F)	73 years	45 of 100 (Notable)
22 May 1977	Witelsbos (Bos), ZA	daily rain	62.0 mm (2.4 in)	32.5 mm (1.3 in)	64 years	44 of 100 (Notable)
22 May 1977	Port Alfred, ZA	daily rain	38.0 mm (1.5 in)	14.1 mm (0.6 in)	88 years	43 of 100 (Notable)
22 May 1977	St George, CA	all-time high max	38.0 C (100.4 F)	2.4 C (4.3 F)	41 years	42 of 100 (Notable)
22 May 1977	Miller, US	daily rain	38.9 mm (1.5 in)	13.2 mm (0.5 in)	70 years	40 of 100 (Notable)
22 May 1977	Mellen 4 NE, US	daily rain	48.8 mm (1.9 in)	25.9 mm (1.0 in)	32 years	40 of 100 (Notable)
22 May 1977	Huntingdon, CA	daily high max	32.2 C (90.0 F)	2.2 C (4.0 F)	89 years	39 of 100 (Notable)
22 May 1977	Springview 2NW, US	daily rain	35.6 mm (1.4 in)	12.7 mm (0.5 in)	66 years	39 of 100 (Notable)
22 May 1977	Durham, CA	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	89 years	37 of 100 (Notable)
22 May 1977	Tadoussac, CA	monthly high max	31.7 C (89.1 F)	1.7 C (3.1 F)	62 years	37 of 100 (Notable)
22 May 1977	La Pocatiere Cda, CA	monthly high max	31.7 C (89.1 F)	0.6 C (1.1 F)	64 years	37 of 100 (Notable)
22 May 1977	Tarwin Lower (Riverside), AU	daily rain	26.8 mm (1.1 in)	6.0 mm (0.24 in)	66 years	36 of 100 (Notable)
22 May 1977	Lucknow, CA	daily high max	32.8 C (91.0 F)	0.6 C (1.1 F)	89 years	36 of 100 (Notable)
22 May 1977	La Pocatiere Cda, CA	monthly high min	21.1 C (70.0 F)	2.2 C (4.0 F)	47 years	36 of 100 (Notable)
22 May 1977	John Martin Dam, US	daily rain	50.3 mm (2.0 in)	31.2 mm (1.2 in)	28 years	36 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

1806 to 1977

Records set or tied on this calendar date in each year from 1806 to 1977. 1977 had 648 records.

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

Records on 05-22 in each year
Year	Records
1806	1
1837	4
1840	1
1841	1
1845	1
1846	1
1847	2
1857	1
1861	1
1862	1
1864	1
1865	1
1866	5
1867	3
1870	2
1872	1
1874	2
1875	1
1877	1
1881	1
1883	3
1885	1
1886	5
1887	3
1889	2
1890	4
1891	1
1892	2
1894	3
1895	2
1896	5
1897	3
1898	3
1899	3
1900	2
1901	3
1902	5
1903	7
1904	6
1905	11
1906	15
1907	45
1908	20
1909	19
1910	6
1911	77
1912	20
1913	15
1914	30
1915	23
1916	22
1917	43
1918	50
1919	402
1920	27
1921	85
1922	60
1923	63
1924	196
1925	382
1926	165
1927	250
1928	168
1929	210
1930	121
1931	489
1932	306
1933	307
1934	292
1935	162
1936	490
1937	192
1938	313
1939	407
1940	364
1941	640
1942	379
1943	385
1944	490
1945	334
1946	277
1947	340
1948	322
1949	534
1950	456
1951	294
1952	442
1953	632
1954	558
1955	556
1956	617
1957	774
1958	584
1959	713
1960	455
1961	446
1962	662
1963	1,149
1964	775
1965	367
1966	434
1967	1,222
1968	502
1969	593
1970	306
1971	479
1972	462
1973	446
1974	613
1975	772
1976	476
1977	648
1978	558
1979	674
1980	997
1981	1,427
1982	558
1983	1,025
1984	907
1985	736
1986	724
1987	810
1988	641
1989	722
1990	1,193
1991	1,200
1992	1,159
1993	922
1994	517
1995	823
1996	1,139
1997	1,154
1998	995
1999	610
2000	1,124
2001	1,371
2002	2,020
2003	822
2004	1,111
2005	1,002
2006	1,174
2007	1,113
2008	967
2009	1,075
2010	1,051
2011	745
2012	1,039
2013	1,216
2014	828
2015	938
2016	807
2017	613
2018	495
2019	1,372
2020	631
2021	915
2022	1,248
2023	400
2024	861
2025	778
2026	473

Download the Data

Data for records on 1977-05-22: 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 10	479
10 to 20	25
20 to 30	9
30 to 40	4
40 to 50	1
50 to 60	1
60 to 70	0
70 to 80	1