Weather Records on 27 August 2018

933 weather records were set or tied worldwide on 27 August 2018. Highest significance: Moloaa 1145, US.

Key Facts for 27 August 2018

On 27 August 2018, 933 weather records were set or tied at long-record stations worldwide.
382 were record highs and 289 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 20 monthly and 912 daily.
Moloaa 1145 set a daily record precipitation of 85.9 mm (3.4 in) on 27 August 2018.
Across 165 earlier years (1807 to 2026) the same calendar date averaged 434 records.

Record Map

933 stations

933 station records on 27 August 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 August 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Moloaa 1145	United States	Record daily precipitation	85.9 mm (3.4 in)	68 of 100 (Major)
Koloa 936	United States	Record daily precipitation	90.4 mm (3.6 in)	61 of 100 (Major)
Koloko Rsvr 1137	United States	Record daily precipitation	65.3 mm (2.6 in)	61 of 100 (Major)
Mahaulepu 941.1	United States	Record daily precipitation	74.9 mm (2.9 in)	61 of 100 (Major)
Montague 4 NW	United States	Record daily precipitation	101.3 mm (4.0 in)	59 of 100 (Notable)
Puhi 1013	United States	Record daily precipitation	72.9 mm (2.9 in)	59 of 100 (Notable)
Halenanaho 1006	United States	Record daily precipitation	114.3 mm (4.5 in)	58 of 100 (Notable)
Maracay - B.A. Sucr	Venezuela	Record daily precipitation	199.9 mm (7.9 in)	58 of 100 (Notable)
Bailing-Miao	China	Record daily precipitation	103.4 mm (4.1 in)	56 of 100 (Notable)
Duolun	China	Record daily precipitation	87.1 mm (3.4 in)	55 of 100 (Notable)
Horicon Wwtp	United States	Record daily precipitation	81.5 mm (3.2 in)	52 of 100 (Notable)
La Crosse Muni AP	United States	Record daily precipitation	77.2 mm (3.0 in)	52 of 100 (Notable)
Manitowoc	United States	Record daily precipitation	79.8 mm (3.1 in)	48 of 100 (Notable)
Oshkosh	United States	Record daily precipitation	50.8 mm (2.0 in)	48 of 100 (Notable)
Streator 2SE	United States	Record high minimum temperature	23.9 C (75.0 F)	47 of 100 (Notable)
Frankfort 2NE	United States	Record daily precipitation	41.9 mm (1.6 in)	47 of 100 (Notable)
Sylvan Lake	United States	Record daily precipitation	45.7 mm (1.8 in)	47 of 100 (Notable)
Flatwillow 4 ENE	United States	Record daily precipitation	27.9 mm (1.1 in)	46 of 100 (Notable)
Wibaux 2 E	United States	Record low maximum temperature	11.1 C (52.0 F)	46 of 100 (Notable)
Mt Mary College	United States	Record daily precipitation	61.0 mm (2.4 in)	46 of 100 (Notable)
Werris Creek Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	45 of 100 (Notable)
Oceanside Marina	United States	Record high minimum temperature	21.7 C (71.1 F)	45 of 100 (Notable)
Mahinahina 466	United States	Record daily precipitation	46.2 mm (1.8 in)	45 of 100 (Notable)
Pauoa Flats 784	United States	Record daily precipitation	68.1 mm (2.7 in)	45 of 100 (Notable)
Lewistown AP	United States	Record low maximum temperature	11.1 C (52.0 F)	45 of 100 (Notable)
Novi Sad	Serbia	Record daily precipitation	31.0 mm (1.2 in)	44 of 100 (Notable)
Morris 1NW	United States	Record high minimum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Alta 1 NNW	United States	Record low maximum temperature	11.7 C (53.1 F)	44 of 100 (Notable)
Kula Hospital 267	United States	Record daily precipitation	56.1 mm (2.2 in)	44 of 100 (Notable)
Casey	United States	Record high minimum temperature	23.3 C (73.9 F)	43 of 100 (Notable)
Hartford Wwtp	United States	Record daily precipitation	116.8 mm (4.6 in)	43 of 100 (Notable)
The Warriups	Australia	Record daily precipitation	25.0 mm (1.0 in)	42 of 100 (Notable)
Cairns Post Office	Australia	Record high maximum temperature	31.2 C (88.2 F)	42 of 100 (Notable)
Chandbali	India	Record daily precipitation	96.0 mm (3.8 in)	42 of 100 (Notable)
Decatur Wtp	United States	Record high minimum temperature	24.4 C (75.9 F)	42 of 100 (Notable)
Walnut	United States	Record high minimum temperature	23.3 C (73.9 F)	42 of 100 (Notable)
Greenville 2 NNE	United States	Record daily precipitation	57.2 mm (2.3 in)	42 of 100 (Notable)
Culbertson	United States	Record low maximum temperature	14.4 C (57.9 F)	42 of 100 (Notable)
Arhangelsk	Russia	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Meeker	United States	Record high minimum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Minonk	United States	Record high minimum temperature	23.3 C (73.9 F)	41 of 100 (Notable)
Rochester	United States	Record high minimum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
W Lafayette 6 NW	United States	Record high minimum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
Franklin	United States	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Chippewa Falls	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Plymouth Wwtp	United States	Record daily precipitation	75.9 mm (3.0 in)	41 of 100 (Notable)
Tambacounda	Senegal	Record high maximum temperature	38.5 C (101.3 F)	40 of 100 (Notable)
Monmouth	United States	Record high minimum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Mosby 4 ENE	United States	Record daily precipitation	29.0 mm (1.1 in)	40 of 100 (Notable)
Morgan	United States	Record high minimum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Hatton 9 SE	United States	Record low maximum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Grassy Lake	United States	Record daily precipitation	27.9 mm (1.1 in)	40 of 100 (Notable)
Hart 3 WSW	United States	Record daily precipitation	59.4 mm (2.3 in)	39 of 100 (Notable)
Fond du Lac Wwtp	United States	Record daily precipitation	69.9 mm (2.8 in)	38 of 100 (Notable)
Koloa Mauka 994	United States	Record daily precipitation	182.9 mm (7.2 in)	38 of 100 (Notable)
Moanalua 770	United States	Record daily precipitation	26.7 mm (1.1 in)	38 of 100 (Notable)
Kupino	Russia	Record daily precipitation	25.9 mm (1.0 in)	37 of 100 (Notable)
Lamoni	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Chilton	United States	Record daily precipitation	89.7 mm (3.5 in)	37 of 100 (Notable)
Shanghi Summit	United States	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)

Counts by Type and Timescale

933 records

Records set or tied on 27 August 2018 by type: Highest daily maximum 78, Lowest daily maximum 237, Highest daily minimum 304, Lowest daily minimum 52, Heaviest daily rainfall 262.

Records on 27 August 2018 by type
Record type	Records
Highest daily maximum	78
Lowest daily maximum	237
Highest daily minimum	304
Lowest daily minimum	52
Heaviest daily rainfall	262
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 August 2018 by timescale: all-time 1, monthly 20, daily 912.

How Much Records Were Beaten By

704 broken records

Margins by which the 704 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 157.0. Ties are not counted.

Top 20 by Significance

27 August 2018

Top 20 records on 27 August 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 August 2018	Moloaa 1145, US	daily rain	85.9 mm (3.4 in)	76.8 mm (3.0 in)	64 years	68 of 100 (Major)
27 August 2018	Koloa 936, US	daily rain	90.4 mm (3.6 in)	61.7 mm (2.4 in)	37 years	61 of 100 (Major)
27 August 2018	Koloko Rsvr 1137, US	daily rain	65.3 mm (2.6 in)	38.4 mm (1.5 in)	48 years	61 of 100 (Major)
27 August 2018	Mahaulepu 941.1, US	daily rain	74.9 mm (2.9 in)	60.9 mm (2.4 in)	37 years	61 of 100 (Major)
27 August 2018	Montague 4 NW, US	daily rain	101.3 mm (4.0 in)	51.5 mm (2.0 in)	40 years	59 of 100 (Notable)
27 August 2018	Puhi 1013, US	daily rain	72.9 mm (2.9 in)	52.1 mm (2.1 in)	37 years	59 of 100 (Notable)
27 August 2018	Halenanaho 1006, US	daily rain	114.3 mm (4.5 in)	85.9 mm (3.4 in)	37 years	58 of 100 (Notable)
27 August 2018	Maracay - B.A. Sucr, VE	daily rain	199.9 mm (7.9 in)	157.0 mm (6.2 in)	43 years	58 of 100 (Notable)
27 August 2018	Bailing-Miao, CN	all-time rain	103.4 mm (4.1 in)	12.6 mm (0.5 in)	56 years	56 of 100 (Notable)
27 August 2018	Duolun, CN	daily rain	87.1 mm (3.4 in)	66.7 mm (2.6 in)	31 years	55 of 100 (Notable)
27 August 2018	Horicon Wwtp, US	daily rain	81.5 mm (3.2 in)	45.9 mm (1.8 in)	44 years	52 of 100 (Notable)
27 August 2018	La Crosse Muni AP, US	daily rain	77.2 mm (3.0 in)	42.9 mm (1.7 in)	37 years	52 of 100 (Notable)
27 August 2018	Manitowoc, US	daily rain	79.8 mm (3.1 in)	32.8 mm (1.3 in)	36 years	48 of 100 (Notable)
27 August 2018	Oshkosh, US	daily rain	50.8 mm (2.0 in)	10.7 mm (0.4 in)	108 years	48 of 100 (Notable)
27 August 2018	Streator 2SE, US	daily high min	23.9 C (75.0 F)	2.8 C (5.0 F)	108 years	47 of 100 (Notable)
27 August 2018	Frankfort 2NE, US	daily rain	41.9 mm (1.6 in)	11.4 mm (0.4 in)	95 years	47 of 100 (Notable)
27 August 2018	Sylvan Lake, US	monthly rain	45.7 mm (1.8 in)	12.7 mm (0.5 in)	33 years	47 of 100 (Notable)
27 August 2018	Flatwillow 4 ENE, US	daily rain	27.9 mm (1.1 in)	19.0 mm (0.7 in)	40 years	46 of 100 (Notable)
27 August 2018	Wibaux 2 E, US	daily low max	11.1 C (52.0 F)	3.3 C (5.9 F)	104 years	46 of 100 (Notable)
27 August 2018	Mt Mary College, US	daily rain	61.0 mm (2.4 in)	37.1 mm (1.5 in)	33 years	46 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 2018

Records set or tied on this calendar date in each year from 1807 to 2018. 2018 had 933 records.

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

Records on 08-27 in each year
Year	Records
1807	3
1810	1
1811	1
1813	1
1816	1
1827	1
1829	1
1834	1
1846	1
1847	1
1848	1
1854	1
1857	1
1858	1
1859	1
1863	1
1864	3
1865	2
1869	1
1870	1
1871	1
1874	1
1876	1
1877	4
1880	1
1881	2
1882	1
1884	3
1885	2
1886	2
1887	2
1889	1
1890	10
1891	4
1892	1
1894	7
1895	1
1896	4
1899	5
1900	5
1901	6
1902	2
1903	22
1904	4
1905	16
1906	27
1907	9
1908	10
1909	10
1910	6
1911	16
1912	40
1913	10
1914	31
1915	37
1916	106
1917	57
1918	18
1919	78
1920	36
1921	27
1922	52
1923	63
1924	245
1925	102
1926	143
1927	395
1928	197
1929	80
1930	247
1931	205
1932	355
1933	368
1934	249
1935	348
1936	806
1937	679
1938	374
1939	191
1940	468
1941	504
1942	476
1943	581
1944	811
1945	414
1946	345
1947	291
1948	987
1949	475
1950	380
1951	415
1952	402
1953	712
1954	594
1955	485
1956	387
1957	615
1958	213
1959	522
1960	365
1961	365
1962	577
1963	335
1964	400
1965	440
1966	406
1967	887
1968	517
1969	780
1970	1,361
1971	640
1972	722
1973	1,519
1974	722
1975	506
1976	565
1977	793
1978	671
1979	917
1980	478
1981	998
1982	828
1983	823
1984	683
1985	660
1986	1,072
1987	1,356
1988	601
1989	854
1990	761
1991	813
1992	1,657
1993	1,087
1994	696
1995	1,143
1996	968
1997	1,189
1998	1,387
1999	1,258
2000	865
2001	1,304
2002	1,027
2003	916
2004	1,037
2005	733
2006	1,090
2007	958
2008	885
2009	701
2010	1,045
2011	1,518
2012	626
2013	629
2014	582
2015	832
2016	968
2017	838
2018	933
2019	1,013
2020	777
2021	635
2022	470
2023	953
2024	600
2025	1,218
2026	815

Download the Data

Data for records on 2018-08-27: 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 20	670
20 to 40	21
40 to 60	7
60 to 80	4
80 to 100	1
100 to 120	0
120 to 140	0
140 to 160	1