Weather Records on 15 December 2017

332 weather records were set or tied worldwide on 15 December 2017. Highest significance: Debrecen Airport, HU.

Key Facts for 15 December 2017

On 15 December 2017, 332 weather records were set or tied at long-record stations worldwide.
197 were record highs and 54 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 7 monthly and 324 daily.
Debrecen Airport set a monthly record daily precipitation of 44.2 mm (1.7 in) on 15 December 2017.
Across 168 earlier years (1793 to 2025) the same calendar date averaged 456 records.

Record Map

332 stations

332 station records on 15 December 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 December 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Debrecen Airport	Hungary	Record daily precipitation	44.2 mm (1.7 in)	67 of 100 (Major)
Haleakala Rch 432	United States	Record daily precipitation	109.2 mm (4.3 in)	50 of 100 (Notable)
Jokkmokk	Sweden	Record snow depth	84.0 cm (33.1 in)	46 of 100 (Notable)
Tete	Mozambique	Record daily precipitation	77.0 mm (3.0 in)	44 of 100 (Notable)
Pontiac Wwtp	United States	Record snow depth	25.4 cm (10.0 in)	41 of 100 (Notable)
Iron Mtn	United States	Record high minimum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
Cross Village 1E	United States	Record daily snowfall	23.9 cm (9.4 in)	40 of 100 (Notable)
Steele 4N	United States	Record high minimum temperature	-3.3 C (26.1 F)	40 of 100 (Notable)
Spokane Intl AP	United States	Record daily snowfall	18.0 cm (7.1 in)	40 of 100 (Notable)
Pecs Pogany	Hungary	Record daily precipitation	33.8 mm (1.3 in)	36 of 100 (Notable)
Colonia Juan Carras	Mexico	Record daily precipitation	32.0 mm (1.3 in)	36 of 100 (Notable)
Kocevje	Slovenia	Record daily precipitation	51.7 mm (2.0 in)	36 of 100 (Notable)
Bowman Dam	United States	Record high maximum temperature	18.9 C (66.0 F)	34 of 100 (Routine)
Lihue WSO AP 1020.1	United States	Record low maximum temperature	22.8 C (73.0 F)	34 of 100 (Routine)
Elsinore	United States	Record high maximum temperature	28.3 C (82.9 F)	33 of 100 (Routine)
Hetch Hetchy	United States	Record high minimum temperature	6.1 C (43.0 F)	32 of 100 (Routine)
Annex Creek	United States	Record high minimum temperature	2.8 C (37.0 F)	32 of 100 (Routine)
Mactan Cebu Intl	Philippines	Record low maximum temperature	24.4 C (75.9 F)	31 of 100 (Routine)
Sandberg	United States	Record high maximum temperature	23.9 C (75.0 F)	31 of 100 (Routine)
Pamplona (Observatorio)	Spain	Record daily precipitation	32.2 mm (1.3 in)	30 of 100 (Routine)
Lesquin	France	Record daily precipitation	26.4 mm (1.0 in)	29 of 100 (Routine)
Ouesso	Congo (Brazzaville)	Record high minimum temperature	23.0 C (73.4 F)	28 of 100 (Routine)
Stony Gorge Rsvr	United States	Record high maximum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
U C L A	United States	Record high minimum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Squaw Lake California	United States	Record high minimum temperature	17.8 C (64.0 F)	28 of 100 (Routine)
Lichinga	Mozambique	Record high maximum temperature	29.9 C (85.8 F)	27 of 100 (Routine)
Quelimane	Mozambique	Record daily precipitation	78.0 mm (3.1 in)	27 of 100 (Routine)
Sibiu	Romania	Record high maximum temperature	13.9 C (57.0 F)	27 of 100 (Routine)
Elatma	Russia	Record high minimum temperature	0.8 C (33.4 F)	27 of 100 (Routine)
Atakpane	Togo	Record high maximum temperature	35.1 C (95.2 F)	27 of 100 (Routine)
Wanaque Raymond Dam	United States	Record low minimum temperature	-15.6 C (3.9 F)	27 of 100 (Routine)
Kursk	Russia	Record high maximum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
Lattakia	Syria	Record high maximum temperature	23.4 C (74.1 F)	26 of 100 (Routine)
Campo	United States	Record high minimum temperature	11.1 C (52.0 F)	26 of 100 (Routine)
Walla Walla Rgnl AP	United States	Record daily snowfall	6.1 cm (2.4 in)	26 of 100 (Routine)
Wyndham Aero	Australia	Record daily precipitation	39.8 mm (1.6 in)	25 of 100 (Routine)
Hermit 8 SE	United States	Record high maximum temperature	13.3 C (55.9 F)	25 of 100 (Routine)
Upham 3 N	United States	Record high minimum temperature	-3.3 C (26.1 F)	25 of 100 (Routine)
Paso Robles Muni AP	United States	Record high maximum temperature	23.3 C (73.9 F)	25 of 100 (Routine)
Warmun	Australia	Record low minimum temperature	20.3 C (68.5 F)	24 of 100 (Routine)
Bilma	Niger	Record high minimum temperature	17.0 C (62.6 F)	24 of 100 (Routine)
Kajlastuj	Russia	Record low maximum temperature	-26.0 C (-14.8 F)	24 of 100 (Routine)
Balch Pwr House	United States	Record high maximum temperature	18.3 C (64.9 F)	24 of 100 (Routine)
Wilmington New Castle Co AP	United States	Record daily snowfall	5.3 cm (2.1 in)	24 of 100 (Routine)
Bettles AP	United States	Record high maximum temperature	-1.6 C (29.1 F)	24 of 100 (Routine)
M'Puoya	Congo (Brazzaville)	Record low minimum temperature	13.5 C (56.3 F)	23 of 100 (Routine)
Yasawa-I-Rara	Fiji	Record daily precipitation	41.5 mm (1.6 in)	23 of 100 (Routine)
Dibrugarh/Mohanbar	India	Record high minimum temperature	17.7 C (63.9 F)	23 of 100 (Routine)
Salalah	Oman	Record low maximum temperature	26.6 C (79.9 F)	23 of 100 (Routine)
Galati	Romania	Record high minimum temperature	4.0 C (39.2 F)	23 of 100 (Routine)
Ruth	United States	Record high maximum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Max	United States	Record high minimum temperature	-2.2 C (28.0 F)	23 of 100 (Routine)
Minchumina	United States	Record high maximum temperature	-2.2 C (28.0 F)	23 of 100 (Routine)
Jfk Intl AP	United States	Record low maximum temperature	-2.1 C (28.2 F)	23 of 100 (Routine)
Buhta Ambarcik	Russia	Record high minimum temperature	-13.4 C (7.9 F)	22 of 100 (Routine)
Cuyamaca	United States	Record high minimum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Saginaw #3	United States	Record snow depth	15.2 cm (6.0 in)	22 of 100 (Routine)
Riverdale	United States	Record high minimum temperature	0.0 C (32.0 F)	22 of 100 (Routine)
Minchumina	United States	Record high minimum temperature	-7.2 C (19.0 F)	22 of 100 (Routine)
S Lake Tahoe AP	United States	Record high maximum temperature	15.0 C (59.0 F)	22 of 100 (Routine)

Counts by Type and Timescale

332 records

Records set or tied on 15 December 2017 by type: Highest daily maximum 106, Lowest daily maximum 26, Highest daily minimum 91, Lowest daily minimum 28, Heaviest daily rainfall 51, Heaviest daily snowfall 12, Deepest snow cover 18.

Records on 15 December 2017 by type
Record type	Records
Highest daily maximum	106
Lowest daily maximum	26
Highest daily minimum	91
Lowest daily minimum	28
Heaviest daily rainfall	51
Heaviest daily snowfall	12
Deepest snow cover	18

Records on 15 December 2017 by timescale: all-time 1, monthly 7, daily 324.

How Much Records Were Beaten By

272 broken records

Margins by which the 272 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 177.0. Ties are not counted.

Top 20 by Significance

15 December 2017

Top 20 records on 15 December 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 December 2017	Debrecen Airport, HU	monthly rain	44.2 mm (1.7 in)	12.6 mm (0.5 in)	57 years	67 of 100 (Major)
15 December 2017	Haleakala Rch 432, US	daily rain	109.2 mm (4.3 in)	51.3 mm (2.0 in)	80 years	50 of 100 (Notable)
15 December 2017	Jokkmokk, SE	daily snow depth	84.0 cm (33.1 in)	10.0 cm (3.9 in)	104 years	46 of 100 (Notable)
15 December 2017	Tete, MZ	daily rain	77.0 mm (3.0 in)	37.5 mm (1.5 in)	56 years	44 of 100 (Notable)
15 December 2017	Pontiac Wwtp, US	daily snow depth	25.4 cm (10.0 in)	5.1 cm (2.0 in)	80 years	41 of 100 (Notable)
15 December 2017	Iron Mtn, US	daily high min	15.0 C (59.0 F)	2.8 C (5.0 F)	80 years	40 of 100 (Notable)
15 December 2017	Cross Village 1E, US	daily snowfall	23.9 cm (9.4 in)	11.5 cm (4.5 in)	34 years	40 of 100 (Notable)
15 December 2017	Steele 4N, US	daily high min	-3.3 C (26.1 F)	0.6 C (1.1 F)	110 years	40 of 100 (Notable)
15 December 2017	Spokane Intl AP, US	daily snowfall	18.0 cm (7.1 in)	5.8 cm (2.3 in)	54 years	40 of 100 (Notable)
15 December 2017	Pecs Pogany, HU	daily rain	33.8 mm (1.3 in)	4.2 mm (0.17 in)	62 years	36 of 100 (Notable)
15 December 2017	Colonia Juan Carras, MX	daily rain	32.0 mm (1.3 in)	29.7 mm (1.2 in)	32 years	36 of 100 (Notable)
15 December 2017	Kocevje, SI	daily rain	51.7 mm (2.0 in)	24.9 mm (1.0 in)	31 years	36 of 100 (Notable)
15 December 2017	Bowman Dam, US	daily high max	18.9 C (66.0 F)	1.1 C (2.0 F)	75 years	34 of 100 (Routine)
15 December 2017	Lihue WSO AP 1020.1, US	daily low max	22.8 C (73.0 F)	1.1 C (2.0 F)	67 years	34 of 100 (Routine)
15 December 2017	Elsinore, US	daily high max	28.3 C (82.9 F)	0.5 C (0.9 F)	75 years	33 of 100 (Routine)
15 December 2017	Hetch Hetchy, US	daily high min	6.1 C (43.0 F)	1.1 C (2.0 F)	64 years	32 of 100 (Routine)
15 December 2017	Annex Creek, US	daily high min	2.8 C (37.0 F)	0.6 C (1.1 F)	74 years	32 of 100 (Routine)
15 December 2017	Mactan Cebu Intl, PH	all-time low max	24.4 C (75.9 F)	0.4 C (0.7 F)	17 years	31 of 100 (Routine)
15 December 2017	Sandberg, US	monthly high max	23.9 C (75.0 F)	0.6 C (1.1 F)	40 years	31 of 100 (Routine)
15 December 2017	Pamplona (Observatorio), ES	daily rain	32.2 mm (1.3 in)	12.0 mm (0.5 in)	42 years	30 of 100 (Routine)

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 2017

Records set or tied on this calendar date in each year from 1793 to 2017. 2017 had 332 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 2017-12-15: 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 25	252
25 to 50	10
50 to 75	5
75 to 100	0
100 to 125	2
125 to 150	1
150 to 175	1
175 to 200	1