Weather Records on 27 May 1979

899 weather records were set or tied worldwide on 27 May 1979. Highest significance: Fort Vermilion Cda, CA.

Key Facts for 27 May 1979

On 27 May 1979, 899 weather records were set or tied at long-record stations worldwide.
201 were record highs and 279 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 18 monthly and 881 daily.
Fort Vermilion Cda set a daily record precipitation of 30.2 mm (1.2 in) on 27 May 1979.
Across 164 earlier years (1797 to 2026) the same calendar date averaged 415 records.

Record Map

899 stations

899 station records on 27 May 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 May 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fort Vermilion Cda	Canada	Record daily precipitation	30.2 mm (1.2 in)	58 of 100 (Notable)
Uplo	Sweden	Record daily precipitation	51.6 mm (2.0 in)	56 of 100 (Notable)
Ocala	United States	Record low minimum temperature	7.2 C (45.0 F)	54 of 100 (Notable)
Fort Reliance	Canada	Record daily precipitation	30.4 mm (1.2 in)	53 of 100 (Notable)
Wangaratta	Australia	Record daily precipitation	26.2 mm (1.0 in)	51 of 100 (Notable)
Stomne	Sweden	Record daily precipitation	29.9 mm (1.2 in)	50 of 100 (Notable)
Kergunyah South	Australia	Record daily precipitation	40.0 mm (1.6 in)	47 of 100 (Notable)
Komga (Pol)	South Africa	Record daily precipitation	32.0 mm (1.3 in)	47 of 100 (Notable)
Orderville	United States	Record daily precipitation	26.4 mm (1.0 in)	46 of 100 (Notable)
Koonamore	Australia	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Deniliquin (Wilkinson St)	Australia	Record daily precipitation	27.6 mm (1.1 in)	45 of 100 (Notable)
Arvika	Sweden	Record daily precipitation	30.4 mm (1.2 in)	45 of 100 (Notable)
Saint Leo	United States	Record low minimum temperature	12.2 C (54.0 F)	45 of 100 (Notable)
Springhurst	Australia	Record daily precipitation	26.0 mm (1.0 in)	44 of 100 (Notable)
Live Oak	United States	Record low minimum temperature	7.2 C (45.0 F)	44 of 100 (Notable)
Tallangatta (Bullioh)	Australia	Record daily precipitation	35.4 mm (1.4 in)	43 of 100 (Notable)
Cottbus	Germany	Record daily precipitation	31.8 mm (1.3 in)	43 of 100 (Notable)
Havrestrom	Sweden	Record daily precipitation	37.0 mm (1.5 in)	43 of 100 (Notable)
Wentworth (Burtundy)	Australia	Record daily precipitation	26.0 mm (1.0 in)	42 of 100 (Notable)
Murray Lock Number 9	Australia	Record daily precipitation	26.2 mm (1.0 in)	42 of 100 (Notable)
Boorhaman	Australia	Record daily precipitation	31.4 mm (1.2 in)	42 of 100 (Notable)
Yellowknife Hydro	Canada	Record daily snowfall	14.7 cm (5.8 in)	41 of 100 (Notable)
Albion	United States	Record daily precipitation	26.9 mm (1.1 in)	41 of 100 (Notable)
Hay River A	Canada	Record daily snowfall	10.8 cm (4.3 in)	40 of 100 (Notable)
Dilke	Canada	Record daily precipitation	38.0 mm (1.5 in)	40 of 100 (Notable)
Borgviksbruk	Sweden	Record daily precipitation	32.2 mm (1.3 in)	40 of 100 (Notable)
Lake City 2 E	United States	Record low minimum temperature	8.3 C (46.9 F)	40 of 100 (Notable)
Invergordon	Australia	Record daily precipitation	30.0 mm (1.2 in)	39 of 100 (Notable)
Nazare	Brazil	Record daily precipitation	71.5 mm (2.8 in)	39 of 100 (Notable)
Gunnedah Pool	Australia	Record high minimum temperature	13.4 C (56.1 F)	37 of 100 (Notable)
Indigo	Australia	Record daily precipitation	25.0 mm (1.0 in)	37 of 100 (Notable)
Rutherglen Research	Australia	Record daily precipitation	28.0 mm (1.1 in)	37 of 100 (Notable)
Arhangelsk	Russia	Record high maximum temperature	26.9 C (80.4 F)	37 of 100 (Notable)
St Petersburg	United States	Record low minimum temperature	17.2 C (63.0 F)	37 of 100 (Notable)
Derry 4 SW	United States	Record low maximum temperature	8.9 C (48.0 F)	37 of 100 (Notable)
Miepoll South	Australia	Record daily precipitation	29.0 mm (1.1 in)	36 of 100 (Notable)
Glenwood Spgs #2	United States	Record high minimum temperature	11.7 C (53.1 F)	36 of 100 (Notable)
Ft Myers Page Fld AP	United States	Record low minimum temperature	15.6 C (60.1 F)	36 of 100 (Notable)
Iliamna AP	United States	Record high minimum temperature	8.9 C (48.0 F)	36 of 100 (Notable)
Hatfield (the Vale)	Australia	Record daily precipitation	25.0 mm (1.0 in)	35 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record high minimum temperature	17.0 C (62.6 F)	35 of 100 (Notable)
Redbank	Australia	Record daily precipitation	26.0 mm (1.0 in)	35 of 100 (Notable)
Agassiz Cda	Canada	Record low maximum temperature	12.0 C (53.6 F)	35 of 100 (Notable)
Alingsas_D	Sweden	Record daily precipitation	37.0 mm (1.5 in)	35 of 100 (Notable)
Inverness 3 SE	United States	Record low minimum temperature	11.1 C (52.0 F)	35 of 100 (Notable)
Tashkent	Uzbekistan	Record low maximum temperature	19.6 C (67.3 F)	35 of 100 (Notable)
Woomargama Estate	Australia	Record daily precipitation	37.6 mm (1.5 in)	34 of 100 (Routine)
Koetong	Australia	Record daily precipitation	59.2 mm (2.3 in)	34 of 100 (Routine)
Kargopol	Russia	Record high minimum temperature	14.5 C (58.1 F)	34 of 100 (Routine)
Federal Pt	United States	Record low minimum temperature	10.6 C (51.1 F)	34 of 100 (Routine)
Waycross 4 NE	United States	Record low minimum temperature	6.1 C (43.0 F)	34 of 100 (Routine)
Walgett Council Depot	Australia	Record high minimum temperature	17.3 C (63.1 F)	33 of 100 (Routine)
Waaia	Australia	Record daily precipitation	25.6 mm (1.0 in)	33 of 100 (Routine)
Eurobin	Australia	Record daily precipitation	51.2 mm (2.0 in)	33 of 100 (Routine)
Syktyvkar	Russia	Record high maximum temperature	27.4 C (81.3 F)	33 of 100 (Routine)
Tangambalanga NE Dairy	Australia	Record daily precipitation	36.4 mm (1.4 in)	32 of 100 (Routine)
Fort Nelson A	Canada	Record daily precipitation	28.1 mm (1.1 in)	32 of 100 (Routine)
Jarnbergsas	Sweden	Record daily precipitation	39.1 mm (1.5 in)	32 of 100 (Routine)
Transtrand_D	Sweden	Record daily precipitation	26.6 mm (1.0 in)	32 of 100 (Routine)
Brooksville Chin Hill	United States	Record low minimum temperature	12.8 C (55.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

899 records

Records set or tied on 27 May 1979 by type: Highest daily maximum 63, Lowest daily maximum 138, Highest daily minimum 138, Lowest daily minimum 141, Heaviest daily rainfall 410, Heaviest daily snowfall 9.

Records on 27 May 1979 by type
Record type	Records
Highest daily maximum	63
Lowest daily maximum	138
Highest daily minimum	138
Lowest daily minimum	141
Heaviest daily rainfall	410
Heaviest daily snowfall	9
Deepest snow cover	0

Records on 27 May 1979 by timescale: all-time 0, monthly 18, daily 881.

How Much Records Were Beaten By

767 broken records

Margins by which the 767 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 72.0. Ties are not counted.

Top 20 by Significance

27 May 1979

Top 20 records on 27 May 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 1979	Fort Vermilion Cda, CA	daily rain	30.2 mm (1.2 in)	20.8 mm (0.8 in)	56 years	58 of 100 (Notable)
27 May 1979	Uplo, SE	monthly rain	51.6 mm (2.0 in)	22.6 mm (0.9 in)	10 years	56 of 100 (Notable)
27 May 1979	Ocala, US	daily low min	7.2 C (45.0 F)	7.2 C (13.0 F)	77 years	54 of 100 (Notable)
27 May 1979	Fort Reliance, CA	monthly rain	30.4 mm (1.2 in)	16.1 mm (0.6 in)	1 year	53 of 100 (Notable)
27 May 1979	Wangaratta, AU	daily rain	26.2 mm (1.0 in)	12.5 mm (0.5 in)	88 years	51 of 100 (Notable)
27 May 1979	Stomne, SE	daily rain	29.9 mm (1.2 in)	22.2 mm (0.9 in)	30 years	50 of 100 (Notable)
27 May 1979	Kergunyah South, AU	daily rain	40.0 mm (1.6 in)	17.6 mm (0.7 in)	77 years	47 of 100 (Notable)
27 May 1979	Komga (Pol), ZA	daily rain	32.0 mm (1.3 in)	12.9 mm (0.5 in)	94 years	47 of 100 (Notable)
27 May 1979	Orderville, US	daily rain	26.4 mm (1.0 in)	15.5 mm (0.6 in)	44 years	46 of 100 (Notable)
27 May 1979	Koonamore, AU	daily rain	30.0 mm (1.2 in)	10.4 mm (0.4 in)	85 years	45 of 100 (Notable)
27 May 1979	Deniliquin (Wilkinson St), AU	daily rain	27.6 mm (1.1 in)	7.5 mm (0.30 in)	86 years	45 of 100 (Notable)
27 May 1979	Arvika, SE	daily rain	30.4 mm (1.2 in)	22.0 mm (0.9 in)	8 years	45 of 100 (Notable)
27 May 1979	Saint Leo, US	daily low min	12.2 C (54.0 F)	3.4 C (6.1 F)	77 years	45 of 100 (Notable)
27 May 1979	Springhurst, AU	daily rain	26.0 mm (1.0 in)	12.0 mm (0.5 in)	72 years	44 of 100 (Notable)
27 May 1979	Live Oak, US	daily low min	7.2 C (45.0 F)	4.5 C (8.1 F)	78 years	44 of 100 (Notable)
27 May 1979	Tallangatta (Bullioh), AU	daily rain	35.4 mm (1.4 in)	10.0 mm (0.4 in)	77 years	43 of 100 (Notable)
27 May 1979	Cottbus, DE	daily rain	31.8 mm (1.3 in)	9.9 mm (0.39 in)	58 years	43 of 100 (Notable)
27 May 1979	Havrestrom, SE	daily rain	37.0 mm (1.5 in)	31.8 mm (1.3 in)	2 years	43 of 100 (Notable)
27 May 1979	Wentworth (Burtundy), AU	daily rain	26.0 mm (1.0 in)	6.4 mm (0.25 in)	88 years	42 of 100 (Notable)
27 May 1979	Murray Lock Number 9, AU	daily rain	26.2 mm (1.0 in)	17.8 mm (0.7 in)	18 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

1797 to 1979

Records set or tied on this calendar date in each year from 1797 to 1979. 1979 had 899 records.

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

Records on 05-27 in each year
Year	Records
1797	1
1817	1
1818	1
1834	2
1836	4
1839	1
1845	1
1846	1
1847	1
1849	1
1852	1
1858	1
1860	1
1863	1
1864	3
1868	4
1869	1
1874	1
1876	1
1879	3
1880	5
1881	2
1883	1
1884	1
1885	1
1886	1
1888	1
1889	3
1890	5
1891	2
1892	8
1893	5
1894	13
1895	4
1896	3
1897	1
1898	3
1899	2
1900	4
1901	7
1902	12
1903	7
1904	11
1905	7
1906	28
1907	23
1908	16
1909	7
1910	31
1911	53
1912	27
1913	19
1914	92
1915	63
1916	26
1917	23
1918	39
1919	38
1920	40
1921	56
1922	36
1923	86
1924	92
1925	291
1926	107
1927	183
1928	81
1929	195
1930	99
1931	367
1932	265
1933	284
1934	393
1935	128
1936	468
1937	298
1938	492
1939	312
1940	138
1941	436
1942	657
1943	160
1944	479
1945	272
1946	424
1947	485
1948	324
1949	366
1950	697
1951	578
1952	258
1953	603
1954	367
1955	571
1956	491
1957	367
1958	619
1959	449
1960	421
1961	1,504
1962	460
1963	421
1964	317
1965	652
1966	398
1967	492
1968	605
1969	850
1970	326
1971	612
1972	508
1973	943
1974	630
1975	404
1976	589
1977	663
1978	814
1979	899
1980	644
1981	891
1982	838
1983	1,253
1984	834
1985	873
1986	696
1987	1,037
1988	777
1989	904
1990	804
1991	1,429
1992	1,413
1993	835
1994	848
1995	815
1996	1,378
1997	919
1998	1,079
1999	876
2000	1,347
2001	898
2002	511
2003	918
2004	838
2005	1,094
2006	1,171
2007	886
2008	914
2009	858
2010	955
2011	1,055
2012	1,475
2013	607
2014	835
2015	537
2016	622
2017	541
2018	1,355
2019	960
2020	906
2021	414
2022	653
2023	405
2024	904
2025	761
2026	1,185

Download the Data

Data for records on 1979-05-27: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 10	658
10 to 20	91
20 to 30	10
30 to 40	4
40 to 50	1
50 to 60	1
60 to 70	1
70 to 80	1