Weather Records on 15 December 1986

502 weather records were set or tied worldwide on 15 December 1986. Highest significance: Pierce 1 E, US.

Key Facts for 15 December 1986

On 15 December 1986, 502 weather records were set or tied at long-record stations worldwide.
161 were record highs and 56 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 11 monthly and 490 daily.
Pierce 1 E set a daily record precipitation of 76.5 mm (3.0 in) on 15 December 1986.
Across 168 earlier years (1793 to 2025) the same calendar date averaged 455 records.

Record Map

502 stations

502 station records on 15 December 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 December 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pierce 1 E	United States	Record daily precipitation	76.5 mm (3.0 in)	54 of 100 (Notable)
Bay City Wtr Wks	United States	Record daily precipitation	76.7 mm (3.0 in)	53 of 100 (Notable)
Columbus	United States	Record daily precipitation	67.3 mm (2.6 in)	53 of 100 (Notable)
La Grange	United States	Record daily precipitation	67.6 mm (2.7 in)	50 of 100 (Notable)
Wharton	United States	Record daily precipitation	68.1 mm (2.7 in)	48 of 100 (Notable)
Washington Sp	United States	Record daily precipitation	63.8 mm (2.5 in)	44 of 100 (Notable)
Schulenburg	United States	Record daily precipitation	67.6 mm (2.7 in)	42 of 100 (Notable)
Sealy	United States	Record daily precipitation	71.1 mm (2.8 in)	42 of 100 (Notable)
Gonzales 2S	United States	Record daily precipitation	53.3 mm (2.1 in)	41 of 100 (Notable)
Brenham	United States	Record daily precipitation	52.3 mm (2.1 in)	40 of 100 (Notable)
Port Arthur SE Tx Rgnl AP	United States	Record daily precipitation	80.8 mm (3.2 in)	40 of 100 (Notable)
Poteet	United States	Record daily precipitation	38.1 mm (1.5 in)	39 of 100 (Notable)
Kurnell (Caltex Oil Refinery)	Australia	Record daily precipitation	53.4 mm (2.1 in)	37 of 100 (Notable)
Joinville (Rvpsc)	Brazil	Record daily precipitation	50.3 mm (2.0 in)	36 of 100 (Notable)
Gvarv	Norway	Record daily precipitation	26.0 mm (1.0 in)	36 of 100 (Notable)
Shenkursk	Russia	Record low minimum temperature	-35.1 C (-31.2 F)	36 of 100 (Notable)
Biser	Russia	Record low minimum temperature	-37.4 C (-35.3 F)	36 of 100 (Notable)
Danevang 1 W	United States	Record daily precipitation	53.3 mm (2.1 in)	36 of 100 (Notable)
Flatonia 4SE	United States	Record daily precipitation	62.2 mm (2.4 in)	36 of 100 (Notable)
Waelder 7 S	United States	Record daily precipitation	53.3 mm (2.1 in)	36 of 100 (Notable)
Chichibu	Japan	Record daily precipitation	30.0 mm (1.2 in)	35 of 100 (Notable)
Floresville	United States	Record daily precipitation	51.1 mm (2.0 in)	35 of 100 (Notable)
Kumagaya	Japan	Record daily precipitation	32.5 mm (1.3 in)	34 of 100 (Routine)
Vytegra	Russia	Record low minimum temperature	-37.3 C (-35.1 F)	34 of 100 (Routine)
Jeddo 3S	United States	Record daily precipitation	69.6 mm (2.7 in)	33 of 100 (Routine)
Port Lavaca 2	United States	Record daily precipitation	29.2 mm (1.1 in)	33 of 100 (Routine)
Dacus	United States	Record daily precipitation	59.2 mm (2.3 in)	32 of 100 (Routine)
Richmond	United States	Record daily precipitation	44.7 mm (1.8 in)	31 of 100 (Routine)
Sugar Land	United States	Record daily precipitation	53.6 mm (2.1 in)	31 of 100 (Routine)
Houston Indep Hts	United States	Record daily precipitation	65.0 mm (2.6 in)	30 of 100 (Routine)
Katy City	United States	Record daily precipitation	54.4 mm (2.1 in)	30 of 100 (Routine)
Gage	United States	Record daily precipitation	28.4 mm (1.1 in)	29 of 100 (Routine)
Ndumu	South Africa	Record daily precipitation	32.5 mm (1.3 in)	28 of 100 (Routine)
Smithville	United States	Record daily precipitation	57.2 mm (2.3 in)	28 of 100 (Routine)
Fazenda Vista Redonda	Brazil	Record daily precipitation	44.6 mm (1.8 in)	27 of 100 (Routine)
Lagunillas	Mexico	Record daily precipitation	30.0 mm (1.2 in)	27 of 100 (Routine)
Troicko-Pecherskoe	Russia	Record low maximum temperature	-39.7 C (-39.5 F)	27 of 100 (Routine)
Cherdyn'	Russia	Record low minimum temperature	-41.9 C (-43.4 F)	27 of 100 (Routine)
Hunt 3 SW	United States	Record daily precipitation	29.2 mm (1.1 in)	27 of 100 (Routine)
Vologda	Russia	Record low minimum temperature	-33.3 C (-27.9 F)	26 of 100 (Routine)
Giddings 5E	United States	Record daily precipitation	56.6 mm (2.2 in)	26 of 100 (Routine)
Laverton Raaf	Australia	Record low minimum temperature	3.6 C (38.5 F)	25 of 100 (Routine)
Kvikkjokk-Arrenjarka	Sweden	Record low maximum temperature	-27.4 C (-17.3 F)	25 of 100 (Routine)
Okeene	United States	Record high minimum temperature	7.2 C (45.0 F)	25 of 100 (Routine)
Runge	United States	Record daily precipitation	33.5 mm (1.3 in)	25 of 100 (Routine)
Eagle	United States	Record high maximum temperature	-1.1 C (30.0 F)	25 of 100 (Routine)
Houston Wb City	United States	Record daily precipitation	51.8 mm (2.0 in)	25 of 100 (Routine)
Yonago	Japan	Record daily precipitation	31.5 mm (1.2 in)	24 of 100 (Routine)
Talisman I	Mexico	Record low minimum temperature	15.6 C (60.1 F)	24 of 100 (Routine)
Petrun	Russia	Record low maximum temperature	-40.5 C (-40.9 F)	24 of 100 (Routine)
Syktyvkar	Russia	Record low maximum temperature	-34.1 C (-29.4 F)	24 of 100 (Routine)
Hallettsville 2 N	United States	Record daily precipitation	39.6 mm (1.6 in)	24 of 100 (Routine)
Shirakawa	Japan	Record daily precipitation	27.0 mm (1.1 in)	23 of 100 (Routine)
Helena 1 SSE	United States	Record high minimum temperature	7.2 C (45.0 F)	23 of 100 (Routine)
Dilley	United States	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Falls City 7 WSW	United States	Record daily precipitation	37.1 mm (1.5 in)	23 of 100 (Routine)
Tomball	United States	Record daily precipitation	36.8 mm (1.4 in)	23 of 100 (Routine)
Kalapa	Australia	Record daily precipitation	36.0 mm (1.4 in)	22 of 100 (Routine)
Usina Sao Jose	Brazil	Record daily precipitation	30.7 mm (1.2 in)	22 of 100 (Routine)
Ogulin	Croatia	Record daily precipitation	35.5 mm (1.4 in)	22 of 100 (Routine)

Counts by Type and Timescale

502 records

Records set or tied on 15 December 1986 by type: Highest daily maximum 69, Lowest daily maximum 19, Highest daily minimum 92, Lowest daily minimum 37, Heaviest daily rainfall 282, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 15 December 1986 by type
Record type	Records
Highest daily maximum	69
Lowest daily maximum	19
Highest daily minimum	92
Lowest daily minimum	37
Heaviest daily rainfall	282
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 15 December 1986 by timescale: all-time 1, monthly 11, daily 490.

How Much Records Were Beaten By

417 broken records

Margins by which the 417 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 57.2. Ties are not counted.

Top 20 by Significance

15 December 1986

Top 20 records on 15 December 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 December 1986	Pierce 1 E, US	daily rain	76.5 mm (3.0 in)	52.4 mm (2.1 in)	36 years	54 of 100 (Notable)
15 December 1986	Bay City Wtr Wks, US	daily rain	76.7 mm (3.0 in)	31.0 mm (1.2 in)	76 years	53 of 100 (Notable)
15 December 1986	Columbus, US	daily rain	67.3 mm (2.6 in)	32.2 mm (1.3 in)	75 years	53 of 100 (Notable)
15 December 1986	La Grange, US	daily rain	67.6 mm (2.7 in)	37.6 mm (1.5 in)	48 years	50 of 100 (Notable)
15 December 1986	Wharton, US	daily rain	68.1 mm (2.7 in)	46.0 mm (1.8 in)	19 years	48 of 100 (Notable)
15 December 1986	Washington Sp, US	daily rain	63.8 mm (2.5 in)	44.2 mm (1.7 in)	13 years	44 of 100 (Notable)
15 December 1986	Schulenburg, US	daily rain	67.6 mm (2.7 in)	37.1 mm (1.5 in)	45 years	42 of 100 (Notable)
15 December 1986	Sealy, US	daily rain	71.1 mm (2.8 in)	32.7 mm (1.3 in)	56 years	42 of 100 (Notable)
15 December 1986	Gonzales 2S, US	daily rain	53.3 mm (2.1 in)	24.6 mm (1.0 in)	39 years	41 of 100 (Notable)
15 December 1986	Brenham, US	daily rain	52.3 mm (2.1 in)	14.2 mm (0.6 in)	75 years	40 of 100 (Notable)
15 December 1986	Port Arthur SE Tx Rgnl AP, US	daily rain	80.8 mm (3.2 in)	57.2 mm (2.3 in)	27 years	40 of 100 (Notable)
15 December 1986	Poteet, US	daily rain	38.1 mm (1.5 in)	22.9 mm (0.9 in)	20 years	39 of 100 (Notable)
15 December 1986	Kurnell (Caltex Oil Refinery), AU	daily rain	53.4 mm (2.1 in)	34.6 mm (1.4 in)	24 years	37 of 100 (Notable)
15 December 1986	Joinville (Rvpsc), BR	daily rain	50.3 mm (2.0 in)	26.3 mm (1.0 in)	28 years	36 of 100 (Notable)
15 December 1986	Gvarv, NO	daily rain	26.0 mm (1.0 in)	7.7 mm (0.30 in)	52 years	36 of 100 (Notable)
15 December 1986	Shenkursk, RU	daily low min	-35.1 C (-31.2 F)	1.6 C (2.9 F)	89 years	36 of 100 (Notable)
15 December 1986	Biser, RU	daily low min	-37.4 C (-35.3 F)	0.8 C (1.4 F)	89 years	36 of 100 (Notable)
15 December 1986	Danevang 1 W, US	daily rain	53.3 mm (2.1 in)	16.5 mm (0.6 in)	56 years	36 of 100 (Notable)
15 December 1986	Flatonia 4SE, US	daily rain	62.2 mm (2.4 in)	25.9 mm (1.0 in)	27 years	36 of 100 (Notable)
15 December 1986	Waelder 7 S, US	daily rain	53.3 mm (2.1 in)	28.9 mm (1.1 in)	36 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

1793 to 1986

Records set or tied on this calendar date in each year from 1793 to 1986. 1986 had 502 records.

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

Records on 12-15 in each year
Year	Records
1793	1
1796	1
1798	1
1800	1
1808	3
1810	1
1814	3
1815	1
1825	1
1831	1
1840	2
1844	2
1846	3
1847	1
1854	3
1859	2
1863	1
1864	1
1866	1
1867	2
1868	1
1869	1
1870	1
1873	1
1874	1
1878	4
1879	2
1880	2
1881	3
1882	2
1883	1
1885	1
1886	1
1889	3
1890	1
1891	2
1892	4
1893	1
1894	4
1895	1
1896	5
1897	2
1899	12
1900	5
1901	21
1902	3
1903	7
1904	9
1905	6
1906	9
1907	10
1908	5
1909	5
1910	4
1911	23
1912	42
1913	13
1914	239
1915	180
1916	40
1917	40
1918	54
1919	28
1920	35
1921	26
1922	65
1923	132
1924	358
1925	187
1926	226
1927	235
1928	388
1929	500
1930	160
1931	284
1932	385
1933	796
1934	199
1935	140
1936	286
1937	310
1938	100
1939	637
1940	464
1941	373
1942	385
1943	486
1944	281
1945	420
1946	521
1947	634
1948	1,239
1949	135
1950	292
1951	962
1952	367
1953	270
1954	413
1955	371
1956	531
1957	304
1958	531
1959	560
1960	313
1961	883
1962	979
1963	670
1964	371
1965	759
1966	275
1967	948
1968	510
1969	352
1970	215
1971	1,739
1972	1,159
1973	615
1974	511
1975	1,230
1976	349
1977	963
1978	499
1979	560
1980	1,085
1981	1,243
1982	831
1983	1,229
1984	1,397
1985	1,077
1986	502
1987	1,740
1988	519
1989	2,753
1990	846
1991	636
1992	1,263
1993	734
1994	676
1995	848
1996	727
1997	1,521
1998	1,216
1999	621
2000	1,154
2001	1,026
2002	831
2003	846
2004	795
2005	953
2006	1,491
2007	973
2008	1,789
2009	930
2010	1,705
2011	780
2012	1,058
2013	701
2014	1,045
2015	1,398
2016	1,024
2017	332
2018	539
2019	547
2020	400
2021	1,182
2022	1,057
2023	794
2024	369
2025	2,115

Download the Data

Data for records on 1986-12-15: 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	348
10 to 20	43
20 to 30	13
30 to 40	8
40 to 50	3
50 to 60	2