Weather Records on 12 July 1987

1,189 weather records were set or tied worldwide on 12 July 1987. Highest significance: Webster City, US.

Key Facts for 12 July 1987

On 12 July 1987, 1,189 weather records were set or tied at long-record stations worldwide.
466 were record highs and 475 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 33 monthly and 1,155 daily.
Webster City set a daily record precipitation of 129.5 mm (5.1 in) on 12 July 1987.
Across 158 earlier years (1796 to 2026) the same calendar date averaged 447 records.

Record Map

1,189 stations

1,189 station records on 12 July 1987 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 July 1987: highest significance records shown on the map
Station	Country	Type	Value	Significance
Webster City	United States	Record daily precipitation	129.5 mm (5.1 in)	71 of 100 (Major)
Chatham Exp Fa	United States	Record daily precipitation	73.7 mm (2.9 in)	67 of 100 (Major)
Reading Wb City	United States	Record daily precipitation	73.2 mm (2.9 in)	62 of 100 (Major)
Middletown	United States	Record daily precipitation	74.4 mm (2.9 in)	58 of 100 (Notable)
Ft Dodge 5NNW	United States	Record daily precipitation	97.8 mm (3.9 in)	56 of 100 (Notable)
Unionville	United States	Record daily precipitation	68.1 mm (2.7 in)	54 of 100 (Notable)
Wanakena Rngr School	United States	Record daily precipitation	73.7 mm (2.9 in)	53 of 100 (Notable)
Canton 4 SE	United States	Record daily precipitation	104.1 mm (4.1 in)	53 of 100 (Notable)
Blue Earth	United States	Record daily precipitation	99.1 mm (3.9 in)	52 of 100 (Notable)
Jewell	United States	Record daily precipitation	104.6 mm (4.1 in)	51 of 100 (Notable)
Storm Lake	United States	Record daily precipitation	93.7 mm (3.7 in)	51 of 100 (Notable)
Tenosique (Smn)	Mexico	Record daily precipitation	91.7 mm (3.6 in)	50 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record low maximum temperature	14.4 C (57.9 F)	50 of 100 (Notable)
Walden	United States	Record low maximum temperature	12.2 C (54.0 F)	49 of 100 (Notable)
Marcus Hook	United States	Record daily precipitation	63.2 mm (2.5 in)	49 of 100 (Notable)
Irapuato	Mexico	Record low minimum temperature	10.0 C (50.0 F)	48 of 100 (Notable)
Grafton	United States	Record high minimum temperature	21.7 C (71.1 F)	48 of 100 (Notable)
Washburn	United States	Record low maximum temperature	15.6 C (60.1 F)	48 of 100 (Notable)
Williamson	United States	Record daily precipitation	49.3 mm (1.9 in)	48 of 100 (Notable)
Cave Run Lake	United States	Record daily precipitation	57.2 mm (2.3 in)	46 of 100 (Notable)
Theilman 1SSW	United States	Record daily precipitation	112.3 mm (4.4 in)	46 of 100 (Notable)
Turkey	United States	Record daily precipitation	50.8 mm (2.0 in)	46 of 100 (Notable)
Grand Marais 2 E	United States	Record daily precipitation	53.3 mm (2.1 in)	46 of 100 (Notable)
Ida Grove 5NW	United States	Record daily precipitation	59.7 mm (2.4 in)	45 of 100 (Notable)
W Manchester 3 WSW	United States	Record daily precipitation	66.8 mm (2.6 in)	45 of 100 (Notable)
Crystal Falls 6 NE	United States	Record daily precipitation	59.9 mm (2.4 in)	44 of 100 (Notable)
Skedemosse	Sweden	Record daily precipitation	30.1 mm (1.2 in)	43 of 100 (Notable)
Eldora	United States	Record daily precipitation	66.3 mm (2.6 in)	43 of 100 (Notable)
Hampton	United States	Record daily precipitation	75.4 mm (3.0 in)	43 of 100 (Notable)
Dillon U of Montana Western	United States	Record daily precipitation	31.0 mm (1.2 in)	43 of 100 (Notable)
Des Moines	United States	Record daily precipitation	47.2 mm (1.9 in)	43 of 100 (Notable)
Portsmouth-Sciotoville	United States	Record daily precipitation	51.3 mm (2.0 in)	43 of 100 (Notable)
Ferron	United States	Record low maximum temperature	20.6 C (69.1 F)	43 of 100 (Notable)
Lovozero	Russia	Record daily precipitation	33.0 mm (1.3 in)	42 of 100 (Notable)
Orebro	Sweden	Record low minimum temperature	5.9 C (42.6 F)	42 of 100 (Notable)
Clarion	United States	Record daily precipitation	82.3 mm (3.2 in)	42 of 100 (Notable)
Natl Arboretum Dc	United States	Record daily precipitation	73.7 mm (2.9 in)	42 of 100 (Notable)
Wells	United States	Record daily precipitation	80.0 mm (3.1 in)	42 of 100 (Notable)
Florida	United States	Record low minimum temperature	8.3 C (46.9 F)	42 of 100 (Notable)
Blair	United States	Record daily precipitation	85.3 mm (3.4 in)	42 of 100 (Notable)
Moorcroft 3S	United States	Record low minimum temperature	1.1 C (34.0 F)	42 of 100 (Notable)
Savsjo	Sweden	Record daily precipitation	33.1 mm (1.3 in)	41 of 100 (Notable)
Cheyenne Wells 2NE	United States	Record low minimum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Plainville 4WNW	United States	Record daily precipitation	91.7 mm (3.6 in)	41 of 100 (Notable)
Benton Harbor AP	United States	Record high maximum temperature	35.0 C (95.0 F)	41 of 100 (Notable)
Princeton	United States	Record daily precipitation	58.9 mm (2.3 in)	41 of 100 (Notable)
Stephan 2 NW	United States	Record low maximum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Lovell	United States	Record low maximum temperature	14.4 C (57.9 F)	41 of 100 (Notable)
Rockwell City	United States	Record daily precipitation	48.3 mm (1.9 in)	40 of 100 (Notable)
Denton 2 E	United States	Record daily precipitation	58.7 mm (2.3 in)	40 of 100 (Notable)
Jerome	United States	Record daily precipitation	58.9 mm (2.3 in)	40 of 100 (Notable)
Bishkek	Kyrgyzstan	Record daily precipitation	34.4 mm (1.4 in)	39 of 100 (Notable)
Stewart	United States	Record daily precipitation	66.0 mm (2.6 in)	39 of 100 (Notable)
Crow Agency	United States	Record daily precipitation	30.0 mm (1.2 in)	39 of 100 (Notable)
Lancaster	United States	Record high maximum temperature	32.2 C (90.0 F)	39 of 100 (Notable)
Minot Exp STN	United States	Record low maximum temperature	13.3 C (55.9 F)	39 of 100 (Notable)
Fergana	Uzbekistan	Record low maximum temperature	23.2 C (73.8 F)	39 of 100 (Notable)
Santa Rosa	United States	Record low maximum temperature	19.4 C (66.9 F)	38 of 100 (Notable)
Algona	United States	Record daily precipitation	43.4 mm (1.7 in)	38 of 100 (Notable)
Dubuque L&D 11	United States	Record high minimum temperature	27.2 C (81.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

1,189 records

Records set or tied on 12 July 1987 by type: Highest daily maximum 160, Lowest daily maximum 262, Highest daily minimum 306, Lowest daily minimum 213, Heaviest daily rainfall 248.

Records on 12 July 1987 by type
Record type	Records
Highest daily maximum	160
Lowest daily maximum	262
Highest daily minimum	306
Lowest daily minimum	213
Heaviest daily rainfall	248
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 July 1987 by timescale: all-time 1, monthly 33, daily 1,155.

How Much Records Were Beaten By

871 broken records

Margins by which the 871 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 90.6. Ties are not counted.

Top 20 by Significance

12 July 1987

Top 20 records on 12 July 1987 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 July 1987	Webster City, US	daily rain	129.5 mm (5.1 in)	90.6 mm (3.6 in)	74 years	71 of 100 (Major)
12 July 1987	Chatham Exp Fa, US	daily rain	73.7 mm (2.9 in)	43.2 mm (1.7 in)	72 years	67 of 100 (Major)
12 July 1987	Reading Wb City, US	daily rain	73.2 mm (2.9 in)	35.6 mm (1.4 in)	89 years	62 of 100 (Major)
12 July 1987	Middletown, US	daily rain	74.4 mm (2.9 in)	51.3 mm (2.0 in)	40 years	58 of 100 (Notable)
12 July 1987	Ft Dodge 5NNW, US	daily rain	97.8 mm (3.9 in)	61.0 mm (2.4 in)	26 years	56 of 100 (Notable)
12 July 1987	Unionville, US	daily rain	68.1 mm (2.7 in)	35.6 mm (1.4 in)	81 years	54 of 100 (Notable)
12 July 1987	Wanakena Rngr School, US	daily rain	73.7 mm (2.9 in)	37.6 mm (1.5 in)	36 years	53 of 100 (Notable)
12 July 1987	Canton 4 SE, US	monthly rain	104.1 mm (4.1 in)	25.9 mm (1.0 in)	36 years	53 of 100 (Notable)
12 July 1987	Blue Earth, US	daily rain	99.1 mm (3.9 in)	90.5 mm (3.6 in)	29 years	52 of 100 (Notable)
12 July 1987	Jewell, US	daily rain	104.6 mm (4.1 in)	84.0 mm (3.3 in)	26 years	51 of 100 (Notable)
12 July 1987	Storm Lake, US	daily rain	93.7 mm (3.7 in)	49.2 mm (1.9 in)	26 years	51 of 100 (Notable)
12 July 1987	Tenosique (Smn), MX	daily rain	91.7 mm (3.6 in)	44.7 mm (1.8 in)	49 years	50 of 100 (Notable)
12 July 1987	Yellowstone Park Mammoth, US	daily low max	14.4 C (57.9 F)	5.6 C (10.1 F)	92 years	50 of 100 (Notable)
12 July 1987	Walden, US	monthly low max	12.2 C (54.0 F)	1.1 C (2.0 F)	90 years	49 of 100 (Notable)
12 July 1987	Marcus Hook, US	daily rain	63.2 mm (2.5 in)	46.4 mm (1.8 in)	48 years	49 of 100 (Notable)
12 July 1987	Irapuato, MX	daily low min	10.0 C (50.0 F)	2.8 C (5.0 F)	64 years	48 of 100 (Notable)
12 July 1987	Grafton, US	monthly high min	21.7 C (71.1 F)	1.1 C (2.0 F)	92 years	48 of 100 (Notable)
12 July 1987	Washburn, US	daily low max	15.6 C (60.1 F)	7.7 C (13.9 F)	73 years	48 of 100 (Notable)
12 July 1987	Williamson, US	daily rain	49.3 mm (1.9 in)	20.9 mm (0.8 in)	80 years	48 of 100 (Notable)
12 July 1987	Cave Run Lake, US	daily rain	57.2 mm (2.3 in)	21.6 mm (0.9 in)	76 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

1796 to 1987

Records set or tied on this calendar date in each year from 1796 to 1987. 1987 had 1,189 records.

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

Records on 07-12 in each year
Year	Records
1796	1
1816	1
1821	2
1841	1
1847	2
1848	2
1850	3
1851	1
1858	1
1860	2
1866	1
1870	2
1873	1
1874	2
1875	1
1876	2
1879	1
1880	2
1882	1
1886	4
1887	1
1888	4
1889	1
1890	4
1891	3
1892	2
1893	1
1894	4
1895	7
1896	3
1897	2
1898	1
1900	2
1901	5
1902	2
1903	11
1904	13
1905	28
1906	22
1907	19
1908	46
1909	24
1910	12
1911	93
1912	19
1913	20
1914	57
1915	16
1916	39
1917	163
1918	99
1919	56
1920	37
1921	94
1922	42
1923	85
1924	68
1925	231
1926	272
1927	84
1928	79
1929	137
1930	561
1931	309
1932	305
1933	609
1934	348
1935	379
1936	1,082
1937	353
1938	257
1939	509
1940	623
1941	796
1942	363
1943	421
1944	446
1945	1,118
1946	234
1947	319
1948	379
1949	357
1950	485
1951	765
1952	680
1953	688
1954	907
1955	263
1956	474
1957	381
1958	434
1959	459
1960	466
1961	606
1962	447
1963	418
1964	898
1965	457
1966	614
1967	502
1968	466
1969	745
1970	298
1971	538
1972	716
1973	633
1974	617
1975	1,321
1976	812
1977	377
1978	635
1979	555
1980	998
1981	645
1982	526
1983	955
1984	871
1985	558
1986	1,015
1987	1,189
1988	961
1989	559
1990	1,489
1991	1,028
1992	1,167
1993	1,443
1994	904
1995	1,070
1996	964
1997	800
1998	1,244
1999	1,397
2000	796
2001	856
2002	1,537
2003	910
2004	799
2005	1,068
2006	1,038
2007	749
2008	719
2009	707
2010	1,450
2011	1,468
2012	979
2013	570
2014	437
2015	618
2016	740
2017	586
2018	398
2019	598
2020	875
2021	830
2022	507
2023	839
2024	968
2025	567
2026	1,100

Download the Data

Data for records on 1987-07-12: 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).