Weather Records on 20 April 1939

158 weather records were set or tied worldwide on 20 April 1939. Highest significance: Srirangpatnam, IN.

Key Facts for 20 April 1939

On 20 April 1939, 158 weather records were set or tied at long-record stations worldwide.
47 were record highs and 67 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 155 daily.
Srirangpatnam set a daily record precipitation of 33.5 mm (1.3 in) on 20 April 1939.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 464 records.

Record Map

158 stations

158 station records on 20 April 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Srirangpatnam	India	Record daily precipitation	33.5 mm (1.3 in)	41 of 100 (Notable)
Narrandera (Back Brewarrena)	Australia	Record daily precipitation	38.9 mm (1.5 in)	40 of 100 (Notable)
Kaikalur	India	Record daily precipitation	29.2 mm (1.1 in)	39 of 100 (Notable)
Samnanger	Norway	Record daily precipitation	121.3 mm (4.8 in)	38 of 100 (Notable)
Myklebust I Breim	Norway	Record daily precipitation	29.0 mm (1.1 in)	34 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record high maximum temperature	15.0 C (59.0 F)	26 of 100 (Routine)
1 WSW Princeton	United States	Record low maximum temperature	2.8 C (37.0 F)	22 of 100 (Routine)
Redding Fire STN 2	United States	Record high minimum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Vik I Sogn III	Norway	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Tunnsjo	Norway	Record daily precipitation	13.6 mm (0.5 in)	20 of 100 (Routine)
Narva	Estonia	Record daily precipitation	13.8 mm (0.5 in)	20 of 100 (Routine)
Plum Island	United States	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Pakri	Estonia	Record daily precipitation	8.8 mm (0.35 in)	20 of 100 (Routine)
Ostas I Hegra	Norway	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Lien I Selbu	Norway	Record daily precipitation	11.3 mm (0.4 in)	20 of 100 (Routine)
Biser	Russia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Nerchinskij Zavod	Russia	Record daily precipitation	4.2 mm (0.17 in)	20 of 100 (Routine)
Globe Rs	United States	Record high maximum temperature	35.0 C (95.0 F)	20 of 100 (Routine)
Biloxi	United States	Record low maximum temperature	18.3 C (64.9 F)	20 of 100 (Routine)
Te Kowai Exp STN	Australia	Record low minimum temperature	9.7 C (49.5 F)	19 of 100 (Routine)
Cobar (Paddington)	Australia	Record daily precipitation	3.8 mm (0.15 in)	19 of 100 (Routine)
Little Falls	United States	Record daily precipitation	27.4 mm (1.1 in)	19 of 100 (Routine)
Brownsville	United States	Record low minimum temperature	3.9 C (39.0 F)	19 of 100 (Routine)
Mackay Post Office	Australia	Record low minimum temperature	12.5 C (54.5 F)	18 of 100 (Routine)
Bundaberg Post Office	Australia	Record low maximum temperature	24.2 C (75.6 F)	18 of 100 (Routine)
Burnett Heads Niell St	Australia	Record daily precipitation	31.8 mm (1.3 in)	18 of 100 (Routine)
Wolfville	Canada	Record high minimum temperature	8.3 C (46.9 F)	18 of 100 (Routine)
Urvakonda	India	Record daily precipitation	5.1 mm (0.20 in)	18 of 100 (Routine)
Tiruvannamalai	India	Record daily precipitation	24.9 mm (1.0 in)	18 of 100 (Routine)
Hornindal	Norway	Record daily precipitation	28.5 mm (1.1 in)	18 of 100 (Routine)
Blagovescensk	Russia	Record high minimum temperature	4.7 C (40.5 F)	18 of 100 (Routine)
Berkeley	United States	Record low maximum temperature	11.7 C (53.1 F)	18 of 100 (Routine)
Amite	United States	Record low minimum temperature	-0.6 C (30.9 F)	18 of 100 (Routine)
Central Michigan UNIV	United States	Record daily precipitation	7.1 mm (0.28 in)	18 of 100 (Routine)
Minden	United States	Record high minimum temperature	11.1 C (52.0 F)	18 of 100 (Routine)
Wilpena Head Station	Australia	Record daily precipitation	5.1 mm (0.20 in)	17 of 100 (Routine)
Jervis Bay (Point Perpendicula	Australia	Record daily precipitation	35.1 mm (1.4 in)	17 of 100 (Routine)
Boonton 1 SE	United States	Record daily precipitation	38.9 mm (1.5 in)	17 of 100 (Routine)
Bosque del Apache	United States	Record low minimum temperature	-3.3 C (26.1 F)	17 of 100 (Routine)
Hay River	Canada	Record high maximum temperature	20.6 C (69.1 F)	16 of 100 (Routine)
Karlstad	Sweden	Record high minimum temperature	7.3 C (45.1 F)	16 of 100 (Routine)
Louisville 1 E	United States	Record low minimum temperature	5.0 C (41.0 F)	16 of 100 (Routine)
Leakesville 6 WSW	United States	Record low minimum temperature	2.2 C (36.0 F)	16 of 100 (Routine)
Lewisburg Exp STN	United States	Record low maximum temperature	10.6 C (51.1 F)	16 of 100 (Routine)
Thomasville	United States	Record low minimum temperature	1.7 C (35.1 F)	15 of 100 (Routine)
Mena	United States	Record low minimum temperature	3.3 C (37.9 F)	15 of 100 (Routine)
San Jacinto	United States	Record high maximum temperature	35.6 C (96.1 F)	15 of 100 (Routine)
Gardiner	United States	Record daily precipitation	26.9 mm (1.1 in)	15 of 100 (Routine)
Hattiesburg 5SW	United States	Record low minimum temperature	1.7 C (35.1 F)	15 of 100 (Routine)
Laurel	United States	Record low minimum temperature	1.7 C (35.1 F)	15 of 100 (Routine)
Louisville	United States	Record low minimum temperature	1.7 C (35.1 F)	15 of 100 (Routine)
University	United States	Record low minimum temperature	2.2 C (36.0 F)	15 of 100 (Routine)
Fergana	Uzbekistan	Record low minimum temperature	-0.7 C (30.7 F)	15 of 100 (Routine)
Fort Simpson	Canada	Record high minimum temperature	2.2 C (36.0 F)	14 of 100 (Routine)
Kjahta	Russia	Record high minimum temperature	4.5 C (40.1 F)	14 of 100 (Routine)
Svenska Hogarna	Sweden	Record daily precipitation	5.4 mm (0.21 in)	14 of 100 (Routine)
Brookhaven City	United States	Record low minimum temperature	2.8 C (37.0 F)	14 of 100 (Routine)
Doniphan	United States	Record low maximum temperature	9.4 C (48.9 F)	14 of 100 (Routine)
Elkins	United States	Record high minimum temperature	13.3 C (55.9 F)	14 of 100 (Routine)
Tishomingo Natl Wr	United States	Record low minimum temperature	1.1 C (34.0 F)	14 of 100 (Routine)

Counts by Type and Timescale

158 records

Records set or tied on 20 April 1939 by type: Highest daily maximum 25, Lowest daily maximum 14, Highest daily minimum 22, Lowest daily minimum 53, Heaviest daily rainfall 44.

Records on 20 April 1939 by type
Record type	Records
Highest daily maximum	25
Lowest daily maximum	14
Highest daily minimum	22
Lowest daily minimum	53
Heaviest daily rainfall	44
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 April 1939 by timescale: all-time 0, monthly 3, daily 155.

How Much Records Were Beaten By

120 broken records

Margins by which the 120 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 31.5. Ties are not counted.

Top 20 by Significance

20 April 1939

Top 20 records on 20 April 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 1939	Srirangpatnam, IN	daily rain	33.5 mm (1.3 in)	31.5 mm (1.2 in)	18 years	41 of 100 (Notable)
20 April 1939	Narrandera (Back Brewarrena), AU	daily rain	38.9 mm (1.5 in)	18.6 mm (0.7 in)	47 years	40 of 100 (Notable)
20 April 1939	Kaikalur, IN	daily rain	29.2 mm (1.1 in)	28.4 mm (1.1 in)	22 years	39 of 100 (Notable)
20 April 1939	Samnanger, NO	monthly rain	121.3 mm (4.8 in)	27.7 mm (1.1 in)	18 years	38 of 100 (Notable)
20 April 1939	Myklebust I Breim, NO	daily rain	29.0 mm (1.1 in)	12.5 mm (0.5 in)	38 years	34 of 100 (Routine)
20 April 1939	Aleksandrovsk-Sahalinskij, RU	daily high max	15.0 C (59.0 F)	4.3 C (7.7 F)	40 years	26 of 100 (Routine)
20 April 1939	1 WSW Princeton, US	daily low max	2.8 C (37.0 F)	5.0 C (9.0 F)	34 years	22 of 100 (Routine)
20 April 1939	Redding Fire STN 2, US	daily high min	18.3 C (64.9 F)	2.7 C (4.9 F)	32 years	21 of 100 (Routine)
20 April 1939	Vik I Sogn III, NO	daily rain	20.1 mm (0.8 in)	11.3 mm (0.4 in)	24 years	20 of 100 (Routine)
20 April 1939	Tunnsjo, NO	daily rain	13.6 mm (0.5 in)	8.0 mm (0.31 in)	4 years	20 of 100 (Routine)
20 April 1939	Narva, EE	daily rain	13.8 mm (0.5 in)	6.9 mm (0.27 in)	17 years	20 of 100 (Routine)
20 April 1939	Plum Island, US	daily rain	17.8 mm (0.7 in)	17.5 mm (0.7 in)	9 years	20 of 100 (Routine)
20 April 1939	Pakri, EE	daily rain	8.8 mm (0.35 in)	3.2 mm (0.13 in)	41 years	20 of 100 (Routine)
20 April 1939	Ostas I Hegra, NO	daily rain	23.1 mm (0.9 in)	4.9 mm (0.19 in)	38 years	20 of 100 (Routine)
20 April 1939	Lien I Selbu, NO	daily rain	11.3 mm (0.4 in)	4.6 mm (0.18 in)	24 years	20 of 100 (Routine)
20 April 1939	Biser, RU	daily rain	12.2 mm (0.5 in)	4.9 mm (0.19 in)	6 years	20 of 100 (Routine)
20 April 1939	Nerchinskij Zavod, RU	daily rain	4.2 mm (0.17 in)	1.8 mm (0.07 in)	41 years	20 of 100 (Routine)
20 April 1939	Globe Rs, US	monthly high max	35.0 C (95.0 F)	0.6 C (1.1 F)	19 years	20 of 100 (Routine)
20 April 1939	Biloxi, US	daily low max	18.3 C (64.9 F)	1.7 C (3.1 F)	37 years	20 of 100 (Routine)
20 April 1939	Te Kowai Exp STN, AU	daily low min	9.7 C (49.5 F)	2.5 C (4.5 F)	28 years	19 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

1807 to 1939

Records set or tied on this calendar date in each year from 1807 to 1939. 1939 had 158 records.

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

Records on 04-20 in each year
Year	Records
1807	3
1817	1
1838	1
1849	2
1851	1
1852	4
1854	1
1858	1
1860	1
1864	1
1865	3
1868	1
1869	1
1870	1
1872	1
1874	3
1875	4
1876	1
1878	2
1880	2
1881	2
1884	1
1885	1
1886	2
1889	1
1891	2
1892	1
1893	6
1894	8
1895	7
1896	3
1897	6
1898	1
1899	1
1901	8
1902	3
1903	14
1904	31
1905	9
1906	12
1907	18
1908	14
1909	22
1910	25
1911	18
1912	12
1913	19
1914	46
1915	45
1916	19
1917	33
1918	42
1919	17
1920	49
1921	27
1922	40
1923	157
1924	113
1925	169
1926	310
1927	442
1928	212
1929	182
1930	87
1931	255
1932	166
1933	279
1934	384
1935	384
1936	311
1937	427
1938	339
1939	158
1940	519
1941	558
1942	223
1943	670
1944	304
1945	391
1946	395
1947	308
1948	493
1949	477
1950	329
1951	690
1952	552
1953	1,071
1954	377
1955	623
1956	384
1957	730
1958	327
1959	563
1960	472
1961	1,078
1962	487
1963	595
1964	749
1965	724
1966	1,174
1967	864
1968	975
1969	382
1970	948
1971	765
1972	531
1973	982
1974	673
1975	344
1976	661
1977	693
1978	800
1979	495
1980	1,539
1981	706
1982	906
1983	1,844
1984	922
1985	1,140
1986	770
1987	1,447
1988	1,144
1989	1,187
1990	1,495
1991	1,075
1992	1,009
1993	772
1994	756
1995	1,351
1996	970
1997	833
1998	1,490
1999	674
2000	931
2001	752
2002	1,081
2003	758
2004	567
2005	707
2006	859
2007	582
2008	1,110
2009	845
2010	693
2011	1,477
2012	726
2013	1,520
2014	384
2015	702
2016	650
2017	734
2018	1,309
2019	1,019
2020	449
2021	1,215
2022	596
2023	828
2024	673
2025	836
2026	533

Download the Data

Data for records on 1939-04-20: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	98
5 to 10	10
10 to 15	4
15 to 20	4
20 to 25	0
25 to 30	3
30 to 35	1