Weather Records on 20 December 1990

1,885 weather records were set or tied worldwide on 20 December 1990. Highest significance: Pirassununga, BR.

Key Facts for 20 December 1990

On 20 December 1990, 1,885 weather records were set or tied at long-record stations worldwide.
260 were record highs and 1,032 were record lows, counting maximum and minimum temperature.
By timescale, 23 were all-time records, 119 monthly and 1,743 daily.
Pirassununga set an all-time record daily precipitation of 164.1 mm (6.5 in) on 20 December 1990.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 458 records.

Record Map

1,885 stations

1,885 station records on 20 December 1990 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 1990: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pirassununga	Brazil	Record daily precipitation	164.1 mm (6.5 in)	64 of 100 (Major)
Minersville	United States	Record daily snowfall	43.2 cm (17.0 in)	59 of 100 (Notable)
Leech Lake	United States	Record daily snowfall	20.3 cm (8.0 in)	58 of 100 (Notable)
Hawthorne AP	United States	Record snow depth	10.2 cm (4.0 in)	57 of 100 (Notable)
Napoleon	United States	Record daily snowfall	12.7 cm (5.0 in)	57 of 100 (Notable)
Detroit Lakes 1 NNE	United States	Record daily snowfall	15.2 cm (6.0 in)	56 of 100 (Notable)
Spearfish	United States	Record low maximum temperature	-28.3 C (-18.9 F)	56 of 100 (Notable)
Kuusiku	Estonia	Record daily precipitation	29.4 mm (1.2 in)	55 of 100 (Notable)
Fosston 1 E	United States	Record daily precipitation	26.2 mm (1.0 in)	54 of 100 (Notable)
Park City G.C.	United States	Record low minimum temperature	-34.4 C (-29.9 F)	52 of 100 (Notable)
Fergus Falls	United States	Record daily snowfall	15.2 cm (6.0 in)	51 of 100 (Notable)
Wadena 3 S	United States	Record daily snowfall	16.5 cm (6.5 in)	50 of 100 (Notable)
Grand Rapids Forestry Lab	United States	Record daily snowfall	13.5 cm (5.3 in)	49 of 100 (Notable)
Lovelock	United States	Record low maximum temperature	-12.8 C (9.0 F)	49 of 100 (Notable)
Dubois	United States	Record low maximum temperature	-30.6 C (-23.1 F)	49 of 100 (Notable)
Baudette	United States	Record daily snowfall	15.2 cm (6.0 in)	48 of 100 (Notable)
Itasca UNIV of Minn	United States	Record daily snowfall	19.1 cm (7.5 in)	48 of 100 (Notable)
Forman 5 SSE	United States	Record daily snowfall	15.2 cm (6.0 in)	48 of 100 (Notable)
Florence	United States	Record daily precipitation	38.1 mm (1.5 in)	47 of 100 (Notable)
Mojave	United States	Record daily snowfall	8.9 cm (3.5 in)	47 of 100 (Notable)
Bemidji	United States	Record daily snowfall	20.3 cm (8.0 in)	47 of 100 (Notable)
N Bend SW Oregon Rgnl AP	United States	Record low maximum temperature	-2.8 C (27.0 F)	47 of 100 (Notable)
Fosston 1 E	United States	Record daily snowfall	17.8 cm (7.0 in)	46 of 100 (Notable)
Warroad	United States	Record daily snowfall	10.2 cm (4.0 in)	46 of 100 (Notable)
Norris Madison Pwr House	United States	Record low maximum temperature	-27.8 C (-18.0 F)	46 of 100 (Notable)
Brookings	United States	Record low maximum temperature	1.1 C (34.0 F)	46 of 100 (Notable)
Victor 4 N	United States	Record daily snowfall	15.2 cm (6.0 in)	46 of 100 (Notable)
Old Faithful	United States	Record low minimum temperature	-42.8 C (-45.0 F)	46 of 100 (Notable)
Anacortes	United States	Record low maximum temperature	-6.7 C (19.9 F)	45 of 100 (Notable)
Newport	United States	Record low minimum temperature	-11.7 C (10.9 F)	45 of 100 (Notable)
Mineiros Do Tiete (Cpef)	Brazil	Record daily precipitation	97.2 mm (3.8 in)	44 of 100 (Notable)
Ennis	United States	Record low maximum temperature	-27.8 C (-18.0 F)	44 of 100 (Notable)
Hamilton	United States	Record low minimum temperature	-30.6 C (-23.1 F)	44 of 100 (Notable)
Wisdom	United States	Record low maximum temperature	-28.9 C (-20.0 F)	44 of 100 (Notable)
Anaconda	United States	Record low maximum temperature	-23.3 C (-9.9 F)	43 of 100 (Notable)
Grand Marais	United States	Record daily snowfall	20.3 cm (8.0 in)	42 of 100 (Notable)
Dodson 1 WNW	United States	Record daily snowfall	7.6 cm (3.0 in)	42 of 100 (Notable)
Chadron 3SW	United States	Record low minimum temperature	-36.1 C (-33.0 F)	42 of 100 (Notable)
Pettibone	United States	Record daily snowfall	12.7 cm (5.0 in)	42 of 100 (Notable)
Snoqualmie Falls	United States	Record low minimum temperature	-13.9 C (7.0 F)	42 of 100 (Notable)
Seattle Urban Site	United States	Record low minimum temperature	-11.7 C (10.9 F)	42 of 100 (Notable)
Hebgen Dam	United States	Record low maximum temperature	-31.1 C (-24.0 F)	41 of 100 (Notable)
John Day	United States	Record daily snowfall	10.2 cm (4.0 in)	41 of 100 (Notable)
Summit Lake	United States	Record daily snowfall	27.9 cm (11.0 in)	41 of 100 (Notable)
Cheyenne	United States	Record low maximum temperature	-27.8 C (-18.0 F)	41 of 100 (Notable)
Seattle Urban Site	United States	Record low maximum temperature	-6.1 C (21.0 F)	41 of 100 (Notable)
Surigao	Philippines	Record high minimum temperature	26.8 C (80.2 F)	40 of 100 (Notable)
Williams	United States	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Half Moon Bay	United States	Record low minimum temperature	-3.9 C (25.0 F)	40 of 100 (Notable)
San Rafael-Civic Ctr	United States	Record low minimum temperature	-0.6 C (30.9 F)	40 of 100 (Notable)
Ukiah	United States	Record low maximum temperature	2.8 C (37.0 F)	40 of 100 (Notable)
Riggins	United States	Record low maximum temperature	-7.8 C (18.0 F)	40 of 100 (Notable)
Red Lodge	United States	Record low maximum temperature	-30.6 C (-23.1 F)	40 of 100 (Notable)
Grizzly	United States	Record low minimum temperature	-31.1 C (-24.0 F)	40 of 100 (Notable)
Black Rock	United States	Record daily snowfall	15.2 cm (6.0 in)	40 of 100 (Notable)
Winnemucca AP	United States	Record low maximum temperature	-13.9 C (7.0 F)	40 of 100 (Notable)
Los Gatos	United States	Record low maximum temperature	6.1 C (43.0 F)	39 of 100 (Notable)
Virginia City	United States	Record low maximum temperature	-30.0 C (-22.0 F)	39 of 100 (Notable)
Centralia	United States	Record low maximum temperature	-5.6 C (21.9 F)	39 of 100 (Notable)
Diablo Dam	United States	Record low maximum temperature	-11.7 C (10.9 F)	39 of 100 (Notable)

Counts by Type and Timescale

1,885 records

Records set or tied on 20 December 1990 by type: Highest daily maximum 144, Lowest daily maximum 574, Highest daily minimum 116, Lowest daily minimum 458, Heaviest daily rainfall 348, Heaviest daily snowfall 177, Deepest snow cover 68.

Records on 20 December 1990 by type
Record type	Records
Highest daily maximum	144
Lowest daily maximum	574
Highest daily minimum	116
Lowest daily minimum	458
Heaviest daily rainfall	348
Heaviest daily snowfall	177
Deepest snow cover	68

Records on 20 December 1990 by timescale: all-time 23, monthly 119, daily 1,743.

How Much Records Were Beaten By

1,583 broken records

Margins by which the 1,583 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 279.0. Ties are not counted.

Top 20 by Significance

20 December 1990

Top 20 records on 20 December 1990 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 1990	Pirassununga, BR	all-time rain	164.1 mm (6.5 in)	52.2 mm (2.1 in)	29 years	64 of 100 (Major)
20 December 1990	Minersville, US	monthly snowfall	43.2 cm (17.0 in)	22.9 cm (9.0 in)	2 years	59 of 100 (Notable)
20 December 1990	Leech Lake, US	daily snowfall	20.3 cm (8.0 in)	10.1 cm (4.0 in)	75 years	58 of 100 (Notable)
20 December 1990	Hawthorne AP, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	41 years	57 of 100 (Notable)
20 December 1990	Napoleon, US	daily snowfall	12.7 cm (5.0 in)	7.6 cm (3.0 in)	77 years	57 of 100 (Notable)
20 December 1990	Detroit Lakes 1 NNE, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	72 years	56 of 100 (Notable)
20 December 1990	Spearfish, US	all-time low max	-28.3 C (-18.9 F)	0.5 C (0.9 F)	91 years	56 of 100 (Notable)
20 December 1990	Kuusiku, EE	monthly rain	29.4 mm (1.2 in)	9.0 mm (0.35 in)	36 years	55 of 100 (Notable)
20 December 1990	Fosston 1 E, US	daily rain	26.2 mm (1.0 in)	18.1 mm (0.7 in)	23 years	54 of 100 (Notable)
20 December 1990	Park City G.C., US	all-time low min	-34.4 C (-29.9 F)	1.1 C (2.0 F)	73 years	52 of 100 (Notable)
20 December 1990	Fergus Falls, US	daily snowfall	15.2 cm (6.0 in)	10.9 cm (4.3 in)	24 years	51 of 100 (Notable)
20 December 1990	Wadena 3 S, US	daily snowfall	16.5 cm (6.5 in)	12.7 cm (5.0 in)	12 years	50 of 100 (Notable)
20 December 1990	Grand Rapids Forestry Lab, US	daily snowfall	13.5 cm (5.3 in)	11.0 cm (4.3 in)	41 years	49 of 100 (Notable)
20 December 1990	Lovelock, US	daily low max	-12.8 C (9.0 F)	8.4 C (15.1 F)	84 years	49 of 100 (Notable)
20 December 1990	Dubois, US	all-time low max	-30.6 C (-23.1 F)	6.2 C (11.2 F)	39 years	49 of 100 (Notable)
20 December 1990	Baudette, US	daily snowfall	15.2 cm (6.0 in)	7.6 cm (3.0 in)	76 years	48 of 100 (Notable)
20 December 1990	Itasca UNIV of Minn, US	daily snowfall	19.1 cm (7.5 in)	11.5 cm (4.5 in)	35 years	48 of 100 (Notable)
20 December 1990	Forman 5 SSE, US	daily snowfall	15.2 cm (6.0 in)	7.6 cm (3.0 in)	60 years	48 of 100 (Notable)
20 December 1990	Florence, US	daily rain	38.1 mm (1.5 in)	15.5 mm (0.6 in)	76 years	47 of 100 (Notable)
20 December 1990	Mojave, US	daily snowfall	8.9 cm (3.5 in)	7.9 cm (3.1 in)	80 years	47 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 1990

Records set or tied on this calendar date in each year from 1793 to 1990. 1990 had 1,885 records.

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

Records on 12-20 in each year
Year	Records
1793	1
1795	1
1804	1
1805	2
1808	1
1815	1
1828	1
1837	1
1846	1
1855	8
1858	1
1860	1
1866	1
1867	1
1868	1
1869	1
1871	2
1874	3
1875	1
1877	2
1878	1
1879	1
1880	1
1881	1
1882	1
1884	4
1885	1
1886	4
1889	4
1890	2
1891	2
1892	1
1894	2
1895	8
1896	1
1897	4
1898	2
1899	1
1900	7
1901	8
1902	14
1903	17
1904	9
1905	5
1906	5
1907	11
1908	5
1909	22
1910	17
1911	24
1912	27
1913	7
1914	43
1915	18
1916	45
1917	33
1918	18
1919	25
1920	22
1921	101
1922	88
1923	215
1924	332
1925	96
1926	163
1927	200
1928	93
1929	256
1930	67
1931	536
1932	170
1933	492
1934	265
1935	152
1936	416
1937	181
1938	240
1939	308
1940	965
1941	633
1942	817
1943	193
1944	340
1945	430
1946	327
1947	385
1948	345
1949	1,141
1950	758
1951	926
1952	394
1953	385
1954	416
1955	726
1956	471
1957	1,354
1958	382
1959	142
1960	354
1961	369
1962	475
1963	875
1964	499
1965	353
1966	555
1967	1,370
1968	482
1969	514
1970	518
1971	441
1972	448
1973	1,184
1974	328
1975	610
1976	382
1977	484
1978	910
1979	600
1980	667
1981	1,681
1982	712
1983	2,995
1984	1,411
1985	1,035
1986	321
1987	1,179
1988	760
1989	1,812
1990	1,885
1991	1,172
1992	1,134
1993	1,266
1994	813
1995	1,128
1996	1,448
1997	651
1998	1,110
1999	938
2000	1,150
2001	523
2002	943
2003	1,315
2004	836
2005	515
2006	1,387
2007	986
2008	1,356
2009	1,502
2010	2,055
2011	846
2012	1,131
2013	584
2014	524
2015	1,238
2016	603
2017	688
2018	592
2019	731
2020	554
2021	442
2022	567
2023	1,242
2024	897
2025	1,166

Download the Data

Data for records on 1990-12-20: 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 50	1,495
50 to 100	64
100 to 150	18
150 to 200	4
200 to 250	1
250 to 300	1