Weather Records on 30 January 1939

630 weather records were set or tied worldwide on 30 January 1939. Highest significance: Philadelphia City, US.

Key Facts for 30 January 1939

On 30 January 1939, 630 weather records were set or tied at long-record stations worldwide.
31 were record highs and 17 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 613 daily.
Philadelphia City set a daily record precipitation of 45.5 mm (1.8 in) on 30 January 1939.
Across 162 earlier years (1796 to 2026) the same calendar date averaged 504 records.

Record Map

630 stations

630 station records on 30 January 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 January 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Philadelphia City	United States	Record daily precipitation	45.5 mm (1.8 in)	58 of 100 (Notable)
Havana	United States	Record daily snowfall	25.4 cm (10.0 in)	56 of 100 (Notable)
Bloomington Normal	United States	Record daily snowfall	30.5 cm (12.0 in)	54 of 100 (Notable)
Collegeville St Joe AP	United States	Record daily snowfall	21.6 cm (8.5 in)	54 of 100 (Notable)
Port Dover	Canada	Record daily snowfall	22.9 cm (9.0 in)	53 of 100 (Notable)
Jacksonville 2E	United States	Record daily snowfall	22.9 cm (9.0 in)	52 of 100 (Notable)
Haskinville	United States	Record daily precipitation	34.5 mm (1.4 in)	52 of 100 (Notable)
Philadelphia Shawmont	United States	Record daily precipitation	50.0 mm (2.0 in)	52 of 100 (Notable)
Lincoln	United States	Record daily snowfall	26.9 cm (10.6 in)	51 of 100 (Notable)
Pickens 1	United States	Record daily precipitation	70.1 mm (2.8 in)	50 of 100 (Notable)
Hamilton	Canada	Record daily snowfall	30.0 cm (11.8 in)	49 of 100 (Notable)
Great Falls	United States	Record daily precipitation	52.3 mm (2.1 in)	49 of 100 (Notable)
Skaneateles	United States	Record daily precipitation	27.9 mm (1.1 in)	49 of 100 (Notable)
Mt Pocono 2 N	United States	Record daily precipitation	50.8 mm (2.0 in)	49 of 100 (Notable)
Simcoe	Canada	Record daily snowfall	15.2 cm (6.0 in)	48 of 100 (Notable)
Griggsville	United States	Record daily snowfall	22.9 cm (9.0 in)	48 of 100 (Notable)
Ottawa 4SW	United States	Record daily snowfall	24.1 cm (9.5 in)	48 of 100 (Notable)
Harrisburg - Coop	United States	Record daily precipitation	35.1 mm (1.4 in)	48 of 100 (Notable)
Hamilton	Canada	Record daily precipitation	30.0 mm (1.2 in)	47 of 100 (Notable)
Delaware Cy Reedy Poin	United States	Record daily precipitation	57.2 mm (2.3 in)	47 of 100 (Notable)
Roebling	United States	Record daily precipitation	46.5 mm (1.8 in)	47 of 100 (Notable)
Frederick Police Brks	United States	Record daily precipitation	48.8 mm (1.9 in)	46 of 100 (Notable)
Ithaca Cornell UNIV	United States	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
Lancaster 2 NE Pump St	United States	Record daily precipitation	39.4 mm (1.6 in)	45 of 100 (Notable)
Ny City Cntrl Park	United States	Record daily precipitation	30.2 mm (1.2 in)	45 of 100 (Notable)
Belvidere	United States	Record daily precipitation	40.6 mm (1.6 in)	44 of 100 (Notable)
Ephrata	United States	Record daily precipitation	38.1 mm (1.5 in)	44 of 100 (Notable)
Napoleon	United States	Record daily snowfall	25.4 cm (10.0 in)	43 of 100 (Notable)
George School	United States	Record daily precipitation	43.9 mm (1.7 in)	43 of 100 (Notable)
Brantford	Canada	Record daily snowfall	22.9 cm (9.0 in)	42 of 100 (Notable)
Darlington	United States	Record daily precipitation	45.7 mm (1.8 in)	42 of 100 (Notable)
Northfield	United States	Record daily precipitation	50.8 mm (2.0 in)	42 of 100 (Notable)
Georgetown	Canada	Record daily snowfall	20.3 cm (8.0 in)	41 of 100 (Notable)
Morokweng (Pol)	South Africa	Record daily precipitation	37.6 mm (1.5 in)	41 of 100 (Notable)
Ft Wayne City	United States	Record daily snowfall	15.7 cm (6.2 in)	41 of 100 (Notable)
Culvers Lake	United States	Record daily precipitation	33.0 mm (1.3 in)	41 of 100 (Notable)
Wilkes Barre	United States	Record daily precipitation	36.6 mm (1.4 in)	41 of 100 (Notable)
York 3 SSW Pump STN	United States	Record daily precipitation	32.8 mm (1.3 in)	41 of 100 (Notable)
Woodstock	Canada	Record daily snowfall	20.3 cm (8.0 in)	40 of 100 (Notable)
Valparaiso Wtr Wks	United States	Record daily snowfall	25.4 cm (10.0 in)	40 of 100 (Notable)
Takoma Park # 1	United States	Record daily precipitation	53.8 mm (2.1 in)	40 of 100 (Notable)
Springfield Elmwood Av	United States	Record daily precipitation	38.1 mm (1.5 in)	40 of 100 (Notable)
Pottsville	United States	Record daily precipitation	37.1 mm (1.5 in)	40 of 100 (Notable)
Newark Liberty Intl AP	United States	Record daily precipitation	27.2 mm (1.1 in)	40 of 100 (Notable)
Nelsdrift	South Africa	Record daily precipitation	66.0 mm (2.6 in)	39 of 100 (Notable)
Conway	United States	Record daily precipitation	58.4 mm (2.3 in)	39 of 100 (Notable)
Riverton	United States	Record daily precipitation	42.9 mm (1.7 in)	39 of 100 (Notable)
Peoria City Office	United States	Record daily snowfall	19.8 cm (7.8 in)	39 of 100 (Notable)
Atlantic City Marina	United States	Record daily precipitation	32.0 mm (1.3 in)	38 of 100 (Notable)
Reading Wb City	United States	Record daily precipitation	34.3 mm (1.4 in)	38 of 100 (Notable)
Pontiac	United States	Record daily snowfall	22.9 cm (9.0 in)	37 of 100 (Notable)
Lockwood	United States	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)
Carlisle	United States	Record daily precipitation	31.0 mm (1.2 in)	37 of 100 (Notable)
Belleville	Canada	Record daily snowfall	25.4 cm (10.0 in)	36 of 100 (Notable)
Plainfield	United States	Record daily precipitation	33.3 mm (1.3 in)	36 of 100 (Notable)
Buffalo	United States	Record daily snowfall	21.6 cm (8.5 in)	36 of 100 (Notable)
Greensboro	United States	Record daily precipitation	43.4 mm (1.7 in)	36 of 100 (Notable)
Defiance	United States	Record daily precipitation	25.1 mm (1.0 in)	36 of 100 (Notable)
Marion	United States	Record daily precipitation	36.1 mm (1.4 in)	36 of 100 (Notable)
Hanover	United States	Record daily precipitation	30.2 mm (1.2 in)	36 of 100 (Notable)

Counts by Type and Timescale

630 records

Records set or tied on 30 January 1939 by type: Highest daily maximum 2, Lowest daily maximum 10, Highest daily minimum 29, Lowest daily minimum 7, Heaviest daily rainfall 470, Heaviest daily snowfall 96, Deepest snow cover 16.

Records on 30 January 1939 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	10
Highest daily minimum	29
Lowest daily minimum	7
Heaviest daily rainfall	470
Heaviest daily snowfall	96
Deepest snow cover	16

Records on 30 January 1939 by timescale: all-time 0, monthly 17, daily 613.

How Much Records Were Beaten By

587 broken records

Margins by which the 587 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 267.0. Ties are not counted.

Top 20 by Significance

30 January 1939

Top 20 records on 30 January 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 January 1939	Philadelphia City, US	daily rain	45.5 mm (1.8 in)	34.3 mm (1.4 in)	44 years	58 of 100 (Notable)
30 January 1939	Havana, US	daily snowfall	25.4 cm (10.0 in)	20.3 cm (8.0 in)	40 years	56 of 100 (Notable)
30 January 1939	Bloomington Normal, US	daily snowfall	30.5 cm (12.0 in)	26.7 cm (10.5 in)	35 years	54 of 100 (Notable)
30 January 1939	Collegeville St Joe AP, US	daily snowfall	21.6 cm (8.5 in)	17.8 cm (7.0 in)	35 years	54 of 100 (Notable)
30 January 1939	Port Dover, CA	daily snowfall	22.9 cm (9.0 in)	15.0 cm (5.9 in)	45 years	53 of 100 (Notable)
30 January 1939	Jacksonville 2E, US	daily snowfall	22.9 cm (9.0 in)	19.1 cm (7.5 in)	28 years	52 of 100 (Notable)
30 January 1939	Haskinville, US	daily rain	34.5 mm (1.4 in)	22.8 mm (0.9 in)	36 years	52 of 100 (Notable)
30 January 1939	Philadelphia Shawmont, US	daily rain	50.0 mm (2.0 in)	39.8 mm (1.6 in)	28 years	52 of 100 (Notable)
30 January 1939	Lincoln, US	daily snowfall	26.9 cm (10.6 in)	20.5 cm (8.1 in)	28 years	51 of 100 (Notable)
30 January 1939	Pickens 1, US	daily rain	70.1 mm (2.8 in)	49.8 mm (2.0 in)	24 years	50 of 100 (Notable)
30 January 1939	Hamilton, CA	daily snowfall	30.0 cm (11.8 in)	23.6 cm (9.3 in)	37 years	49 of 100 (Notable)
30 January 1939	Great Falls, US	daily rain	52.3 mm (2.1 in)	31.0 mm (1.2 in)	44 years	49 of 100 (Notable)
30 January 1939	Skaneateles, US	daily rain	27.9 mm (1.1 in)	17.7 mm (0.7 in)	29 years	49 of 100 (Notable)
30 January 1939	Mt Pocono 2 N, US	daily rain	50.8 mm (2.0 in)	44.2 mm (1.7 in)	21 years	49 of 100 (Notable)
30 January 1939	Simcoe, CA	daily snowfall	15.2 cm (6.0 in)	12.7 cm (5.0 in)	53 years	48 of 100 (Notable)
30 January 1939	Griggsville, US	daily snowfall	22.9 cm (9.0 in)	17.8 cm (7.0 in)	28 years	48 of 100 (Notable)
30 January 1939	Ottawa 4SW, US	daily snowfall	24.1 cm (9.5 in)	17.7 cm (7.0 in)	33 years	48 of 100 (Notable)
30 January 1939	Harrisburg - Coop, US	daily rain	35.1 mm (1.4 in)	24.9 mm (1.0 in)	44 years	48 of 100 (Notable)
30 January 1939	Hamilton, CA	daily rain	30.0 mm (1.2 in)	23.1 mm (0.9 in)	69 years	47 of 100 (Notable)
30 January 1939	Delaware Cy Reedy Poin, US	daily rain	57.2 mm (2.3 in)	43.5 mm (1.7 in)	13 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

1796 to 1939

Records set or tied on this calendar date in each year from 1796 to 1939. 1939 had 630 records.

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

Records on 01-30 in each year
Year	Records
1796	1
1801	2
1826	1
1830	2
1843	3
1846	3
1854	2
1855	1
1858	1
1859	1
1860	1
1862	1
1863	1
1867	2
1868	1
1869	1
1871	1
1872	1
1873	2
1879	1
1880	1
1881	2
1883	1
1884	4
1886	2
1887	1
1888	2
1890	1
1891	2
1892	4
1893	1
1894	1
1895	7
1897	1
1898	7
1899	7
1900	4
1901	5
1902	5
1903	11
1904	4
1905	8
1906	14
1907	9
1908	44
1909	27
1910	17
1911	35
1912	28
1913	35
1914	62
1915	58
1916	68
1917	113
1918	369
1919	33
1920	48
1921	41
1922	49
1923	126
1924	194
1925	179
1926	185
1927	141
1928	110
1929	416
1930	161
1931	648
1932	347
1933	137
1934	974
1935	305
1936	650
1937	379
1938	323
1939	630
1940	270
1941	380
1942	333
1943	470
1944	320
1945	275
1946	380
1947	1,314
1948	578
1949	1,271
1950	952
1951	1,227
1952	320
1953	508
1954	768
1955	435
1956	577
1957	638
1958	677
1959	282
1960	435
1961	464
1962	632
1963	738
1964	321
1965	772
1966	2,109
1967	885
1968	799
1969	1,258
1970	360
1971	1,370
1972	418
1973	578
1974	1,208
1975	934
1976	501
1977	759
1978	789
1979	2,085
1980	815
1981	654
1982	906
1983	785
1984	984
1985	678
1986	788
1987	1,006
1988	1,375
1989	1,508
1990	1,034
1991	766
1992	1,302
1993	764
1994	904
1995	924
1996	1,287
1997	793
1998	407
1999	1,169
2000	1,116
2001	1,319
2002	2,839
2003	1,086
2004	1,348
2005	906
2006	1,040
2007	673
2008	698
2009	737
2010	1,349
2011	668
2012	827
2013	1,984
2014	1,175
2015	658
2016	1,155
2017	507
2018	678
2019	990
2020	347
2021	442
2022	458
2023	1,298
2024	1,586
2025	688
2026	429

Download the Data

Data for records on 1939-01-30: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 50	527
50 to 100	32
100 to 150	13
150 to 200	11
200 to 250	3
250 to 300	1