Weather Records on 17 December 1977

1,024 weather records were set or tied worldwide on 17 December 1977. Highest significance: Bridgeport, US.

Key Facts for 17 December 1977

On 17 December 1977, 1,024 weather records were set or tied at long-record stations worldwide.
553 were record highs and 37 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 23 monthly and 1,001 daily.
Bridgeport set a daily record precipitation of 49.8 mm (2.0 in) on 17 December 1977.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 460 records.

Record Map

1,024 stations

1,024 station records on 17 December 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 December 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bridgeport	United States	Record daily precipitation	49.8 mm (2.0 in)	65 of 100 (Major)
Monterey	United States	Record daily precipitation	75.4 mm (3.0 in)	65 of 100 (Major)
Stephan 2 NW	United States	Record daily snowfall	12.7 cm (5.0 in)	64 of 100 (Major)
Le Mars	United States	Record daily precipitation	25.9 mm (1.0 in)	54 of 100 (Notable)
Midale	Canada	Record daily snowfall	19.8 cm (7.8 in)	52 of 100 (Notable)
Lewiston	United States	Record snow depth	35.6 cm (14.0 in)	51 of 100 (Notable)
Austin #2	United States	Record daily precipitation	28.7 mm (1.1 in)	51 of 100 (Notable)
Manassas 3 NW	United States	Record daily precipitation	53.1 mm (2.1 in)	51 of 100 (Notable)
Drake	United States	Record daily snowfall	11.9 cm (4.7 in)	50 of 100 (Notable)
Khorog	Tajikistan	Record daily precipitation	36.6 mm (1.4 in)	49 of 100 (Notable)
Buena Vista 2S	United States	Record daily snowfall	10.2 cm (4.0 in)	49 of 100 (Notable)
Spreckels Hwy Brg	United States	Record daily precipitation	43.9 mm (1.7 in)	47 of 100 (Notable)
Los Banos Arburua Rch	United States	Record daily precipitation	35.3 mm (1.4 in)	46 of 100 (Notable)
Carson City	United States	Record daily precipitation	48.8 mm (1.9 in)	46 of 100 (Notable)
Salinas AP	United States	Record daily precipitation	66.5 mm (2.6 in)	46 of 100 (Notable)
Adin Rs	United States	Record daily precipitation	28.7 mm (1.1 in)	44 of 100 (Notable)
Lodi	United States	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Onawa 3NW	United States	Record daily precipitation	27.9 mm (1.1 in)	44 of 100 (Notable)
Glenbrook	United States	Record daily precipitation	34.3 mm (1.4 in)	44 of 100 (Notable)
Ellsworth 1E	United States	Record daily precipitation	25.9 mm (1.0 in)	44 of 100 (Notable)
Loxahatchee	United States	Record daily precipitation	64.5 mm (2.5 in)	43 of 100 (Notable)
Bishop AP	United States	Record daily precipitation	39.1 mm (1.5 in)	43 of 100 (Notable)
Riverside 7 SSW	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Clark	United States	Record daily snowfall	16.5 cm (6.5 in)	42 of 100 (Notable)
Merced	United States	Record daily precipitation	27.9 mm (1.1 in)	41 of 100 (Notable)
Highmore	United States	Record daily snowfall	10.2 cm (4.0 in)	41 of 100 (Notable)
Boissevain	Canada	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Boissevain	Canada	Record daily snowfall	25.4 cm (10.0 in)	40 of 100 (Notable)
Thunder Bay A	Canada	Record daily precipitation	26.8 mm (1.1 in)	40 of 100 (Notable)
Morris W Cntrl Rsch & Outreach	United States	Record high minimum temperature	0.6 C (33.1 F)	40 of 100 (Notable)
Arthur 4NW	United States	Record daily snowfall	20.3 cm (8.0 in)	40 of 100 (Notable)
Bison	United States	Record daily snowfall	5.1 cm (2.0 in)	40 of 100 (Notable)
Maple Creek	Canada	Record daily snowfall	14.2 cm (5.6 in)	39 of 100 (Notable)
McCloud	United States	Record daily snowfall	45.7 cm (18.0 in)	39 of 100 (Notable)
Lakeview 2 NNW	United States	Record daily snowfall	15.2 cm (6.0 in)	39 of 100 (Notable)
Marquette	United States	Record high minimum temperature	2.8 C (37.0 F)	39 of 100 (Notable)
Tekamah	United States	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Paradise Valley 1 NW	United States	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
Bowman	United States	Record snow depth	50.8 cm (20.0 in)	38 of 100 (Notable)
Ruby Lake Nwr	United States	Record daily snowfall	19.1 cm (7.5 in)	37 of 100 (Notable)
Kalumburu Mission	Australia	Record daily precipitation	66.8 mm (2.6 in)	36 of 100 (Notable)
Marengo	United States	Record high minimum temperature	6.1 C (43.0 F)	36 of 100 (Notable)
Monmouth	United States	Record high minimum temperature	6.1 C (43.0 F)	36 of 100 (Notable)
Clinton #1	United States	Record high minimum temperature	5.0 C (41.0 F)	36 of 100 (Notable)
Bottineau	United States	Record daily precipitation	25.9 mm (1.0 in)	36 of 100 (Notable)
Waukesha Wwtp	United States	Record high minimum temperature	5.6 C (42.1 F)	36 of 100 (Notable)
S Bend AP	United States	Record high minimum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Burlingame	United States	Record daily precipitation	35.1 mm (1.4 in)	35 of 100 (Notable)
Ottawa 4SW	United States	Record high minimum temperature	6.7 C (44.1 F)	35 of 100 (Notable)
Alton	United States	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Iowa City	United States	Record high minimum temperature	3.9 C (39.0 F)	35 of 100 (Notable)
Mandan Exp STN	United States	Record snow depth	38.1 cm (15.0 in)	35 of 100 (Notable)
Sulphur Springs	United States	Record high maximum temperature	25.6 C (78.1 F)	35 of 100 (Notable)
Watertown Wwtp	United States	Record high minimum temperature	4.4 C (39.9 F)	35 of 100 (Notable)
Big Sur STN	United States	Record daily precipitation	101.6 mm (4.0 in)	34 of 100 (Routine)
Danville	United States	Record high minimum temperature	9.4 C (48.9 F)	34 of 100 (Routine)
Flora 5 NW	United States	Record high minimum temperature	9.4 C (48.9 F)	34 of 100 (Routine)
Anderson 1 N	United States	Record high minimum temperature	7.8 C (46.0 F)	34 of 100 (Routine)
St Peter	United States	Record high minimum temperature	3.3 C (37.9 F)	34 of 100 (Routine)
Gann Valley 4NW	United States	Record daily snowfall	10.2 cm (4.0 in)	34 of 100 (Routine)

Counts by Type and Timescale

1,024 records

Records set or tied on 17 December 1977 by type: Highest daily maximum 140, Lowest daily maximum 12, Highest daily minimum 413, Lowest daily minimum 25, Heaviest daily rainfall 322, Heaviest daily snowfall 97, Deepest snow cover 15.

Records on 17 December 1977 by type
Record type	Records
Highest daily maximum	140
Lowest daily maximum	12
Highest daily minimum	413
Lowest daily minimum	25
Heaviest daily rainfall	322
Heaviest daily snowfall	97
Deepest snow cover	15

Records on 17 December 1977 by timescale: all-time 0, monthly 23, daily 1,001.

How Much Records Were Beaten By

842 broken records

Margins by which the 842 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

17 December 1977

Top 20 records on 17 December 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 December 1977	Bridgeport, US	daily rain	49.8 mm (2.0 in)	40.1 mm (1.6 in)	63 years	65 of 100 (Major)
17 December 1977	Monterey, US	daily rain	75.4 mm (3.0 in)	49.5 mm (1.9 in)	63 years	65 of 100 (Major)
17 December 1977	Stephan 2 NW, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	74 years	64 of 100 (Major)
17 December 1977	Le Mars, US	daily rain	25.9 mm (1.0 in)	16.0 mm (0.6 in)	68 years	54 of 100 (Notable)
17 December 1977	Midale, CA	daily snowfall	19.8 cm (7.8 in)	12.2 cm (4.8 in)	52 years	52 of 100 (Notable)
17 December 1977	Lewiston, US	daily snow depth	35.6 cm (14.0 in)	35.6 cm (14.0 in)	39 years	51 of 100 (Notable)
17 December 1977	Austin #2, US	daily rain	28.7 mm (1.1 in)	17.3 mm (0.7 in)	20 years	51 of 100 (Notable)
17 December 1977	Manassas 3 NW, US	daily rain	53.1 mm (2.1 in)	31.0 mm (1.2 in)	55 years	51 of 100 (Notable)
17 December 1977	Drake, US	daily snowfall	11.9 cm (4.7 in)	11.9 cm (4.7 in)	44 years	50 of 100 (Notable)
17 December 1977	Khorog, TJ	monthly rain	36.6 mm (1.4 in)	10.7 mm (0.4 in)	20 years	49 of 100 (Notable)
17 December 1977	Buena Vista 2S, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	77 years	49 of 100 (Notable)
17 December 1977	Spreckels Hwy Brg, US	daily rain	43.9 mm (1.7 in)	28.7 mm (1.1 in)	28 years	47 of 100 (Notable)
17 December 1977	Los Banos Arburua Rch, US	daily rain	35.3 mm (1.4 in)	28.7 mm (1.1 in)	7 years	46 of 100 (Notable)
17 December 1977	Carson City, US	daily rain	48.8 mm (1.9 in)	33.3 mm (1.3 in)	20 years	46 of 100 (Notable)
17 December 1977	Salinas AP, US	daily rain	66.5 mm (2.6 in)	56.3 mm (2.2 in)	7 years	46 of 100 (Notable)
17 December 1977	Adin Rs, US	daily rain	28.7 mm (1.1 in)	17.3 mm (0.7 in)	22 years	44 of 100 (Notable)
17 December 1977	Lodi, US	daily rain	33.0 mm (1.3 in)	11.9 mm (0.5 in)	82 years	44 of 100 (Notable)
17 December 1977	Onawa 3NW, US	daily rain	27.9 mm (1.1 in)	19.8 mm (0.8 in)	10 years	44 of 100 (Notable)
17 December 1977	Glenbrook, US	daily rain	34.3 mm (1.4 in)	21.6 mm (0.9 in)	67 years	44 of 100 (Notable)
17 December 1977	Ellsworth 1E, US	daily rain	25.9 mm (1.0 in)	17.0 mm (0.7 in)	16 years	44 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 1977

Records set or tied on this calendar date in each year from 1793 to 1977. 1977 had 1,024 records.

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

Records on 12-17 in each year
Year	Records
1793	2
1796	1
1806	2
1808	2
1814	1
1815	1
1839	1
1845	1
1846	4
1847	1
1848	1
1859	3
1866	1
1867	1
1868	1
1869	2
1873	2
1876	3
1877	2
1878	1
1879	2
1881	2
1885	1
1886	1
1888	2
1889	2
1890	4
1892	4
1893	2
1894	4
1895	3
1896	4
1897	4
1898	2
1899	1
1900	6
1901	5
1902	47
1903	2
1904	14
1905	2
1906	17
1907	9
1908	13
1909	5
1910	37
1911	12
1912	15
1913	21
1914	17
1915	31
1916	21
1917	21
1918	21
1919	109
1920	97
1921	94
1922	120
1923	170
1924	505
1925	79
1926	172
1927	143
1928	359
1929	221
1930	362
1931	217
1932	684
1933	710
1934	200
1935	87
1936	504
1937	379
1938	118
1939	1,126
1940	248
1941	261
1942	507
1943	444
1944	189
1945	621
1946	207
1947	258
1948	316
1949	296
1950	294
1951	773
1952	277
1953	283
1954	409
1955	419
1956	448
1957	686
1958	540
1959	548
1960	492
1961	911
1962	676
1963	531
1964	1,239
1965	482
1966	516
1967	1,121
1968	338
1969	238
1970	820
1971	781
1972	601
1973	1,016
1974	390
1975	474
1976	507
1977	1,024
1978	710
1979	951
1980	1,116
1981	1,354
1982	569
1983	1,264
1984	1,618
1985	1,210
1986	743
1987	1,191
1988	481
1989	2,905
1990	866
1991	577
1992	1,461
1993	761
1994	685
1995	956
1996	1,212
1997	1,279
1998	695
1999	901
2000	1,566
2001	1,262
2002	858
2003	751
2004	554
2005	806
2006	1,307
2007	1,100
2008	1,354
2009	926
2010	1,405
2011	430
2012	942
2013	718
2014	370
2015	1,378
2016	1,521
2017	408
2018	498
2019	917
2020	768
2021	908
2022	595
2023	931
2024	560
2025	1,198

Download the Data

Data for records on 1977-12-17: 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	798
50 to 100	29
100 to 150	9
150 to 200	1
200 to 250	3
250 to 300	0
300 to 350	1
350 to 400	1