Weather Records on 20 July 1987

1,156 weather records were set or tied worldwide on 20 July 1987. Highest significance: Aldinga Post Office, AU.

Key Facts for 20 July 1987

On 20 July 1987, 1,156 weather records were set or tied at long-record stations worldwide.
402 were record highs and 461 were record lows, counting maximum and minimum temperature.
By timescale, 8 were all-time records, 37 monthly and 1,111 daily.
Aldinga Post Office set a daily record precipitation of 28.0 mm (1.1 in) on 20 July 1987.
Across 161 earlier years (1809 to 2026) the same calendar date averaged 455 records.

Record Map

1,156 stations

1,156 station records on 20 July 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 July 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Aldinga Post Office	Australia	Record daily precipitation	28.0 mm (1.1 in)	66 of 100 (Major)
Kukuihaele Hic 199	United States	Record daily precipitation	83.1 mm (3.3 in)	62 of 100 (Major)
Haina 214	United States	Record daily precipitation	58.9 mm (2.3 in)	60 of 100 (Major)
Lyrup	Australia	Record daily precipitation	27.0 mm (1.1 in)	58 of 100 (Notable)
Kukaiau 222	United States	Record daily precipitation	110.7 mm (4.4 in)	57 of 100 (Notable)
Lake Eildon	Australia	Record daily precipitation	38.6 mm (1.5 in)	56 of 100 (Notable)
Tidewater	United States	Record daily precipitation	30.0 mm (1.2 in)	56 of 100 (Notable)
Scheveningen	Netherlands	Record daily precipitation	35.5 mm (1.4 in)	54 of 100 (Notable)
Portola	United States	Record low maximum temperature	15.6 C (60.1 F)	49 of 100 (Notable)
Hilo Intl AP 87	United States	Record daily precipitation	132.1 mm (5.2 in)	49 of 100 (Notable)
Hamley Bridge	Australia	Record daily precipitation	30.8 mm (1.2 in)	48 of 100 (Notable)
Mansfield (Post Office)	Australia	Record daily precipitation	37.0 mm (1.5 in)	48 of 100 (Notable)
Loenen Aan de Vecht	Netherlands	Record daily precipitation	92.0 mm (3.6 in)	47 of 100 (Notable)
Steinkopf (Pol)	South Africa	Record daily precipitation	35.0 mm (1.4 in)	47 of 100 (Notable)
Heber	United States	Record daily precipitation	38.1 mm (1.5 in)	47 of 100 (Notable)
Auburn	Australia	Record daily precipitation	25.8 mm (1.0 in)	46 of 100 (Notable)
Gospic	Croatia	Record high minimum temperature	20.4 C (68.7 F)	46 of 100 (Notable)
Cape St. Francis	South Africa	Record daily precipitation	51.0 mm (2.0 in)	46 of 100 (Notable)
Deseret	United States	Record low maximum temperature	26.1 C (79.0 F)	45 of 100 (Notable)
Otatitlan	Mexico	Record low minimum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
Black Mountain	Australia	Record daily precipitation	32.0 mm (1.3 in)	42 of 100 (Notable)
Irapuato	Mexico	Record low minimum temperature	10.0 C (50.0 F)	42 of 100 (Notable)
Americus	United States	Record low minimum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Aneth Plt	United States	Record low maximum temperature	26.1 C (79.0 F)	42 of 100 (Notable)
Castle Dale	United States	Record low minimum temperature	2.8 C (37.0 F)	42 of 100 (Notable)
Litang	China	Record daily precipitation	36.6 mm (1.4 in)	41 of 100 (Notable)
Nueva Esperanza	Mexico	Record high minimum temperature	26.1 C (79.0 F)	41 of 100 (Notable)
Haiwee	United States	Record low maximum temperature	25.6 C (78.1 F)	41 of 100 (Notable)
Hailey 3 NNW	United States	Record low minimum temperature	2.2 C (36.0 F)	41 of 100 (Notable)
Geyser Rch	United States	Record low maximum temperature	23.3 C (73.9 F)	41 of 100 (Notable)
Buzau	Romania	Record high maximum temperature	39.2 C (102.6 F)	40 of 100 (Notable)
Thomasville 7 NE	United States	Record low minimum temperature	17.2 C (63.0 F)	40 of 100 (Notable)
Waynesboro 2 S	United States	Record low minimum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
Moroni	United States	Record low maximum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Hawkhurst	Australia	Record daily precipitation	33.4 mm (1.3 in)	39 of 100 (Notable)
Petrovskij Zavod	Russia	Record daily precipitation	40.9 mm (1.6 in)	39 of 100 (Notable)
Soldier Summit	United States	Record low minimum temperature	-1.1 C (30.0 F)	39 of 100 (Notable)
Minneapolis-St Paul Intl AP	United States	Record daily precipitation	69.9 mm (2.8 in)	39 of 100 (Notable)
Barstow-Daggett AP	United States	Record low maximum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Passau-Maierhof	Germany	Record daily precipitation	26.9 mm (1.1 in)	38 of 100 (Notable)
Lisse	Netherlands	Record daily precipitation	27.9 mm (1.1 in)	38 of 100 (Notable)
Vinga	Sweden	Record daily precipitation	28.3 mm (1.1 in)	38 of 100 (Notable)
Walnut Creek	United States	Record daily precipitation	35.1 mm (1.4 in)	38 of 100 (Notable)
Talbotton	United States	Record low minimum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
New England	United States	Record daily precipitation	29.2 mm (1.1 in)	38 of 100 (Notable)
Arteaga	Mexico	Record high minimum temperature	22.8 C (73.0 F)	37 of 100 (Notable)
Fruitland	United States	Record low minimum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
Blackville 3 W	United States	Record low minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Ookala 223	United States	Record daily precipitation	82.0 mm (3.2 in)	37 of 100 (Notable)
Butte Bert Mooney AP	United States	Record low minimum temperature	1.7 C (35.1 F)	37 of 100 (Notable)
Wirrabara Forest	Australia	Record daily precipitation	38.2 mm (1.5 in)	36 of 100 (Notable)
Vardoe	Norway	Record high maximum temperature	27.0 C (80.6 F)	36 of 100 (Notable)
Arad	Romania	Record high maximum temperature	36.3 C (97.3 F)	36 of 100 (Notable)
Grebbeshult	Sweden	Record daily precipitation	34.0 mm (1.3 in)	36 of 100 (Notable)
Point Arena	United States	Record low minimum temperature	4.4 C (39.9 F)	36 of 100 (Notable)
Wishek	United States	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Osijek	Croatia	Record high minimum temperature	20.2 C (68.4 F)	35 of 100 (Notable)
Nueva Esperanza	Mexico	Record daily precipitation	53.1 mm (2.1 in)	35 of 100 (Notable)
Atil	Mexico	Record low minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Millen 4 N	United States	Record low minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)

Counts by Type and Timescale

1,156 records

Records set or tied on 20 July 1987 by type: Highest daily maximum 173, Lowest daily maximum 171, Highest daily minimum 229, Lowest daily minimum 290, Heaviest daily rainfall 293.

Records on 20 July 1987 by type
Record type	Records
Highest daily maximum	173
Lowest daily maximum	171
Highest daily minimum	229
Lowest daily minimum	290
Heaviest daily rainfall	293
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 July 1987 by timescale: all-time 8, monthly 37, daily 1,111.

How Much Records Were Beaten By

908 broken records

Margins by which the 908 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 96.5. Ties are not counted.

Top 20 by Significance

20 July 1987

Top 20 records on 20 July 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 July 1987	Aldinga Post Office, AU	daily rain	28.0 mm (1.1 in)	14.5 mm (0.6 in)	91 years	66 of 100 (Major)
20 July 1987	Kukuihaele Hic 199, US	daily rain	83.1 mm (3.3 in)	38.6 mm (1.5 in)	56 years	62 of 100 (Major)
20 July 1987	Haina 214, US	daily rain	58.9 mm (2.3 in)	35.0 mm (1.4 in)	56 years	60 of 100 (Major)
20 July 1987	Lyrup, AU	daily rain	27.0 mm (1.1 in)	19.1 mm (0.8 in)	30 years	58 of 100 (Notable)
20 July 1987	Kukaiau 222, US	daily rain	110.7 mm (4.4 in)	76.9 mm (3.0 in)	36 years	57 of 100 (Notable)
20 July 1987	Lake Eildon, AU	daily rain	38.6 mm (1.5 in)	13.7 mm (0.5 in)	89 years	56 of 100 (Notable)
20 July 1987	Tidewater, US	daily rain	30.0 mm (1.2 in)	26.2 mm (1.0 in)	42 years	56 of 100 (Notable)
20 July 1987	Scheveningen, NL	daily rain	35.5 mm (1.4 in)	22.1 mm (0.9 in)	28 years	54 of 100 (Notable)
20 July 1987	Portola, US	daily low max	15.6 C (60.1 F)	8.8 C (15.8 F)	65 years	49 of 100 (Notable)
20 July 1987	Hilo Intl AP 87, US	daily rain	132.1 mm (5.2 in)	96.5 mm (3.8 in)	21 years	49 of 100 (Notable)
20 July 1987	Hamley Bridge, AU	daily rain	30.8 mm (1.2 in)	8.2 mm (0.32 in)	60 years	48 of 100 (Notable)
20 July 1987	Mansfield (Post Office), AU	daily rain	37.0 mm (1.5 in)	21.6 mm (0.9 in)	2 years	48 of 100 (Notable)
20 July 1987	Loenen Aan de Vecht, NL	daily rain	92.0 mm (3.6 in)	74.2 mm (2.9 in)	13 years	47 of 100 (Notable)
20 July 1987	Steinkopf (Pol), ZA	daily rain	35.0 mm (1.4 in)	14.7 mm (0.6 in)	61 years	47 of 100 (Notable)
20 July 1987	Heber, US	daily rain	38.1 mm (1.5 in)	20.1 mm (0.8 in)	1 year	47 of 100 (Notable)
20 July 1987	Auburn, AU	daily rain	25.8 mm (1.0 in)	5.7 mm (0.22 in)	91 years	46 of 100 (Notable)
20 July 1987	Gospic, HR	monthly high min	20.4 C (68.7 F)	0.4 C (0.7 F)	84 years	46 of 100 (Notable)
20 July 1987	Cape St. Francis, ZA	daily rain	51.0 mm (2.0 in)	22.0 mm (0.9 in)	54 years	46 of 100 (Notable)
20 July 1987	Deseret, US	daily low max	26.1 C (79.0 F)	2.8 C (5.0 F)	91 years	45 of 100 (Notable)
20 July 1987	Otatitlan, MX	daily low min	17.8 C (64.0 F)	2.8 C (5.0 F)	46 years	43 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

1809 to 1987

Records set or tied on this calendar date in each year from 1809 to 1987. 1987 had 1,156 records.

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

Records on 07-20 in each year
Year	Records
1809	1
1810	1
1811	2
1832	2
1844	2
1850	1
1859	2
1863	1
1865	4
1866	1
1867	1
1868	1
1870	1
1872	1
1874	2
1876	1
1877	2
1879	3
1880	1
1881	2
1882	1
1883	2
1885	1
1886	2
1887	1
1888	1
1889	2
1890	5
1892	7
1893	1
1894	1
1895	1
1897	4
1898	2
1899	4
1900	9
1901	3
1902	13
1903	6
1904	10
1905	6
1906	8
1907	12
1908	31
1909	6
1910	27
1911	12
1912	33
1913	28
1914	20
1915	163
1916	117
1917	57
1918	53
1919	40
1920	16
1921	55
1922	52
1923	173
1924	112
1925	125
1926	411
1927	106
1928	366
1929	480
1930	598
1931	362
1932	338
1933	201
1934	857
1935	386
1936	358
1937	213
1938	392
1939	336
1940	325
1941	270
1942	609
1943	326
1944	470
1945	278
1946	482
1947	635
1948	385
1949	807
1950	563
1951	448
1952	488
1953	316
1954	512
1955	377
1956	545
1957	351
1958	536
1959	605
1960	758
1961	338
1962	327
1963	457
1964	416
1965	1,110
1966	469
1967	455
1968	389
1969	649
1970	890
1971	619
1972	1,062
1973	804
1974	489
1975	470
1976	580
1977	899
1978	663
1979	1,249
1980	925
1981	1,048
1982	580
1983	1,117
1984	799
1985	604
1986	848
1987	1,156
1988	1,103
1989	1,183
1990	724
1991	1,024
1992	1,137
1993	901
1994	611
1995	961
1996	1,365
1997	903
1998	1,682
1999	815
2000	1,393
2001	755
2002	986
2003	1,313
2004	978
2005	1,266
2006	1,487
2007	1,124
2008	663
2009	1,533
2010	1,154
2011	1,339
2012	817
2013	850
2014	1,000
2015	812
2016	744
2017	398
2018	930
2019	867
2020	524
2021	683
2022	1,108
2023	812
2024	737
2025	680
2026	863

Download the Data

Data for records on 1987-07-20: 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	880
20 to 40	22
40 to 60	2
60 to 80	3
80 to 100	1