Weather Records on 15 December 1971

1,739 weather records were set or tied worldwide on 15 December 1971. Highest significance: Iowa City, US.

Key Facts for 15 December 1971

On 15 December 1971, 1,739 weather records were set or tied at long-record stations worldwide.
717 were record highs and 82 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 106 monthly and 1,632 daily.
Iowa City set a monthly record daily precipitation of 72.6 mm (2.9 in) on 15 December 1971.
Across 168 earlier years (1793 to 2025) the same calendar date averaged 448 records.

Record Map

1,739 stations

1,739 station records on 15 December 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 December 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Iowa City	United States	Record daily precipitation	72.6 mm (2.9 in)	77 of 100 (Major)
Bloomfield	United States	Record daily precipitation	85.1 mm (3.4 in)	75 of 100 (Major)
Victoria River Downs	Australia	Record daily precipitation	167.9 mm (6.6 in)	72 of 100 (Major)
Dixon Wwtp	United States	Record daily precipitation	45.5 mm (1.8 in)	70 of 100 (Major)
Brunswick	United States	Record daily precipitation	73.7 mm (2.9 in)	70 of 100 (Major)
Lake City Exp Farm	United States	Record daily precipitation	34.0 mm (1.3 in)	68 of 100 (Major)
Tiskilwa 2 SE	United States	Record daily precipitation	50.8 mm (2.0 in)	67 of 100 (Major)
Harrisonville	United States	Record daily precipitation	51.6 mm (2.0 in)	67 of 100 (Major)
Lamar 7N	United States	Record daily precipitation	58.4 mm (2.3 in)	67 of 100 (Major)
Windsor	United States	Record daily precipitation	48.3 mm (1.9 in)	67 of 100 (Major)
Joliet	United States	Record daily precipitation	43.2 mm (1.7 in)	67 of 100 (Major)
Newkirk 5NE	United States	Record daily precipitation	96.5 mm (3.8 in)	66 of 100 (Major)
Washington	United States	Record daily precipitation	80.5 mm (3.2 in)	65 of 100 (Major)
Oswego 1 N	United States	Record daily precipitation	59.7 mm (2.4 in)	65 of 100 (Major)
Charleston	United States	Record daily precipitation	48.5 mm (1.9 in)	64 of 100 (Major)
Pana	United States	Record daily precipitation	54.9 mm (2.2 in)	64 of 100 (Major)
Lexington 3E	United States	Record daily precipitation	64.3 mm (2.5 in)	63 of 100 (Major)
Palmyra	United States	Record daily precipitation	40.6 mm (1.6 in)	63 of 100 (Major)
St Charles Elm Pt	United States	Record daily precipitation	40.6 mm (1.6 in)	63 of 100 (Major)
Memphis	United States	Record daily precipitation	82.0 mm (3.2 in)	62 of 100 (Major)
Moscow U of I	United States	Record snow depth	66.0 cm (26.0 in)	60 of 100 (Major)
Port Washington	United States	Record daily precipitation	51.1 mm (2.0 in)	60 of 100 (Major)
Alice Downs	Australia	Record daily precipitation	157.5 mm (6.2 in)	59 of 100 (Notable)
Steffenville	United States	Record daily precipitation	55.4 mm (2.2 in)	59 of 100 (Notable)
Oshkosh	United States	Record daily precipitation	31.5 mm (1.2 in)	59 of 100 (Notable)
Texas Downs	Australia	Record daily precipitation	146.1 mm (5.8 in)	58 of 100 (Notable)
Greenville	United States	Record daily precipitation	49.0 mm (1.9 in)	58 of 100 (Notable)
Maquoketa	United States	Record daily precipitation	67.6 mm (2.7 in)	58 of 100 (Notable)
Evart	United States	Record daily precipitation	40.6 mm (1.6 in)	58 of 100 (Notable)
Green Bay	United States	Record daily precipitation	29.5 mm (1.2 in)	58 of 100 (Notable)
Hillsboro	United States	Record daily precipitation	57.7 mm (2.3 in)	57 of 100 (Notable)
Keithsburg	United States	Record daily precipitation	57.9 mm (2.3 in)	57 of 100 (Notable)
Marengo	United States	Record daily precipitation	49.5 mm (1.9 in)	57 of 100 (Notable)
Wapello	United States	Record daily precipitation	53.3 mm (2.1 in)	57 of 100 (Notable)
Big Rapids Wtp	United States	Record daily precipitation	42.7 mm (1.7 in)	57 of 100 (Notable)
Frankfort 2NE	United States	Record daily precipitation	31.5 mm (1.2 in)	57 of 100 (Notable)
Appleton	United States	Record daily precipitation	33.3 mm (1.3 in)	57 of 100 (Notable)
Oconomowoc Wwtp	United States	Record daily precipitation	41.7 mm (1.6 in)	57 of 100 (Notable)
West Bend	United States	Record daily precipitation	45.5 mm (1.8 in)	57 of 100 (Notable)
Mabel Downs	Australia	Record daily precipitation	114.3 mm (4.5 in)	56 of 100 (Notable)
Aledo	United States	Record daily precipitation	50.8 mm (2.0 in)	56 of 100 (Notable)
Monmouth	United States	Record daily precipitation	53.8 mm (2.1 in)	56 of 100 (Notable)
Clinton #1	United States	Record daily precipitation	52.1 mm (2.1 in)	56 of 100 (Notable)
Clinton 2	United States	Record daily precipitation	56.6 mm (2.2 in)	56 of 100 (Notable)
Fairfield	United States	Record daily precipitation	53.1 mm (2.1 in)	56 of 100 (Notable)
Mt Pleasant 1 SW	United States	Record daily precipitation	58.4 mm (2.3 in)	56 of 100 (Notable)
Vinton	United States	Record daily precipitation	38.1 mm (1.5 in)	56 of 100 (Notable)
Ft Scott	United States	Record daily precipitation	77.0 mm (3.0 in)	56 of 100 (Notable)
Fredonia	United States	Record daily precipitation	43.9 mm (1.7 in)	56 of 100 (Notable)
Paola	United States	Record daily precipitation	58.7 mm (2.3 in)	56 of 100 (Notable)
Newaygo Hardy Dam	United States	Record daily precipitation	44.7 mm (1.8 in)	56 of 100 (Notable)
Dodgeville Wwtp	United States	Record daily precipitation	33.3 mm (1.3 in)	56 of 100 (Notable)
Kewaunee	United States	Record daily precipitation	37.3 mm (1.5 in)	56 of 100 (Notable)
Richland Ctr	United States	Record daily precipitation	29.0 mm (1.1 in)	56 of 100 (Notable)
Havana	United States	Record daily precipitation	48.3 mm (1.9 in)	55 of 100 (Notable)
Clarence	United States	Record daily precipitation	62.2 mm (2.4 in)	55 of 100 (Notable)
Tipton	United States	Record daily precipitation	80.0 mm (3.1 in)	55 of 100 (Notable)
Walnut 4S	United States	Record daily precipitation	48.3 mm (1.9 in)	55 of 100 (Notable)
Cheboygan	United States	Record daily precipitation	27.7 mm (1.1 in)	55 of 100 (Notable)
Onaway 4N	United States	Record daily precipitation	32.8 mm (1.3 in)	55 of 100 (Notable)

Counts by Type and Timescale

1,739 records

Records set or tied on 15 December 1971 by type: Highest daily maximum 495, Lowest daily maximum 44, Highest daily minimum 222, Lowest daily minimum 38, Heaviest daily rainfall 812, Heaviest daily snowfall 68, Deepest snow cover 60.

Records on 15 December 1971 by type
Record type	Records
Highest daily maximum	495
Lowest daily maximum	44
Highest daily minimum	222
Lowest daily minimum	38
Heaviest daily rainfall	812
Heaviest daily snowfall	68
Deepest snow cover	60

Records on 15 December 1971 by timescale: all-time 1, monthly 106, daily 1,632.

How Much Records Were Beaten By

1,529 broken records

Margins by which the 1,529 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 431.0. Ties are not counted.

Top 20 by Significance

15 December 1971

Top 20 records on 15 December 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 December 1971	Iowa City, US	monthly rain	72.6 mm (2.9 in)	26.9 mm (1.1 in)	75 years	77 of 100 (Major)
15 December 1971	Bloomfield, US	monthly rain	85.1 mm (3.4 in)	30.5 mm (1.2 in)	64 years	75 of 100 (Major)
15 December 1971	Victoria River Downs, AU	daily rain	167.9 mm (6.6 in)	108.5 mm (4.3 in)	80 years	72 of 100 (Major)
15 December 1971	Dixon Wwtp, US	daily rain	45.5 mm (1.8 in)	28.7 mm (1.1 in)	77 years	70 of 100 (Major)
15 December 1971	Brunswick, US	daily rain	73.7 mm (2.9 in)	53.4 mm (2.1 in)	77 years	70 of 100 (Major)
15 December 1971	Lake City Exp Farm, US	daily rain	34.0 mm (1.3 in)	21.3 mm (0.8 in)	66 years	68 of 100 (Major)
15 December 1971	Tiskilwa 2 SE, US	daily rain	50.8 mm (2.0 in)	41.7 mm (1.6 in)	68 years	67 of 100 (Major)
15 December 1971	Harrisonville, US	daily rain	51.6 mm (2.0 in)	40.2 mm (1.6 in)	68 years	67 of 100 (Major)
15 December 1971	Lamar 7N, US	daily rain	58.4 mm (2.3 in)	49.3 mm (1.9 in)	68 years	67 of 100 (Major)
15 December 1971	Windsor, US	daily rain	48.3 mm (1.9 in)	38.4 mm (1.5 in)	76 years	67 of 100 (Major)
15 December 1971	Joliet, US	daily rain	43.2 mm (1.7 in)	28.0 mm (1.1 in)	77 years	67 of 100 (Major)
15 December 1971	Newkirk 5NE, US	monthly rain	96.5 mm (3.8 in)	37.3 mm (1.5 in)	37 years	66 of 100 (Major)
15 December 1971	Washington, US	monthly rain	80.5 mm (3.2 in)	37.3 mm (1.5 in)	28 years	65 of 100 (Major)
15 December 1971	Oswego 1 N, US	daily rain	59.7 mm (2.4 in)	49.5 mm (1.9 in)	60 years	65 of 100 (Major)
15 December 1971	Charleston, US	daily rain	48.5 mm (1.9 in)	33.0 mm (1.3 in)	68 years	64 of 100 (Major)
15 December 1971	Pana, US	daily rain	54.9 mm (2.2 in)	34.6 mm (1.4 in)	68 years	64 of 100 (Major)
15 December 1971	Lexington 3E, US	monthly rain	64.3 mm (2.5 in)	18.6 mm (0.7 in)	75 years	63 of 100 (Major)
15 December 1971	Palmyra, US	daily rain	40.6 mm (1.6 in)	30.4 mm (1.2 in)	76 years	63 of 100 (Major)
15 December 1971	St Charles Elm Pt, US	daily rain	40.6 mm (1.6 in)	32.5 mm (1.3 in)	77 years	63 of 100 (Major)
15 December 1971	Memphis, US	monthly rain	82.0 mm (3.2 in)	33.0 mm (1.3 in)	28 years	62 of 100 (Major)

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 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 1,739 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 1971-12-15: 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 100	1,507
100 to 200	13
200 to 300	8
300 to 400	0
400 to 500	1