Weather Records on 12 May 1939

233 weather records were set or tied worldwide on 12 May 1939. Highest significance: Makaweli 965, US.

Key Facts for 12 May 1939

On 12 May 1939, 233 weather records were set or tied at long-record stations worldwide.
58 were record highs and 91 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 232 daily.
Makaweli 965 set a monthly record daily precipitation of 82.3 mm (3.2 in) on 12 May 1939.
Across 164 earlier years (1814 to 2026) the same calendar date averaged 454 records.

Record Map

233 stations

233 station records on 12 May 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 May 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Makaweli 965	United States	Record daily precipitation	82.3 mm (3.2 in)	56 of 100 (Notable)
Prince Rupert	Canada	Record daily precipitation	61.2 mm (2.4 in)	51 of 100 (Notable)
E Lawai 934	United States	Record daily precipitation	75.2 mm (3.0 in)	49 of 100 (Notable)
Ulm	Germany	Record daily precipitation	30.4 mm (1.2 in)	45 of 100 (Notable)
Cookhouse (Sar)	South Africa	Record daily precipitation	69.9 mm (2.8 in)	45 of 100 (Notable)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	36.8 mm (1.4 in)	37 of 100 (Notable)
Guthrie 5S	United States	Record daily precipitation	56.4 mm (2.2 in)	37 of 100 (Notable)
Milan	Italy	Record daily precipitation	50.4 mm (2.0 in)	33 of 100 (Routine)
Tulbagh (Pol)	South Africa	Record daily precipitation	38.6 mm (1.5 in)	32 of 100 (Routine)
St John's	Canada	Record high maximum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Koloa 936	United States	Record daily precipitation	47.0 mm (1.9 in)	25 of 100 (Routine)
Durbanville (Pol)	South Africa	Record daily precipitation	26.4 mm (1.0 in)	23 of 100 (Routine)
Paarl (Tnk)	South Africa	Record daily precipitation	53.3 mm (2.1 in)	23 of 100 (Routine)
Port Blair	India	Record daily precipitation	57.2 mm (2.3 in)	22 of 100 (Routine)
Napa State Hospital	United States	Record high maximum temperature	34.4 C (93.9 F)	22 of 100 (Routine)
Salekhard	Russia	Record daily precipitation	19.7 mm (0.8 in)	20 of 100 (Routine)
Pieter Meintjies (Sar)	South Africa	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record daily precipitation	19.0 mm (0.7 in)	20 of 100 (Routine)
Kunzelsau	Germany	Record daily precipitation	18.7 mm (0.7 in)	20 of 100 (Routine)
Quorn	Australia	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Ozena	United States	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Ft Duchesne	United States	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Bookaloo	Australia	Record daily precipitation	10.9 mm (0.4 in)	20 of 100 (Routine)
Quorn (Depot Flat)	Australia	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Port Augusta (Yarley)	Australia	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Woomera (Arcoona)	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Paskeville	Australia	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Ohringen	Germany	Record daily precipitation	23.2 mm (0.9 in)	20 of 100 (Routine)
Ellwangen-Rindelbach	Germany	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Berlin (Sar)	South Africa	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Rawsonville (Pol)	South Africa	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Yarrie	Australia	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Hobart (Ellerslie Road)	Australia	Record high maximum temperature	22.6 C (72.7 F)	20 of 100 (Routine)
Tot-Ma	Russia	Record low minimum temperature	-4.9 C (23.2 F)	20 of 100 (Routine)
Anderson	United States	Record low maximum temperature	13.9 C (57.0 F)	20 of 100 (Routine)
Taos	United States	Record high minimum temperature	9.4 C (48.9 F)	20 of 100 (Routine)
Morganton	United States	Record high minimum temperature	20.6 C (69.1 F)	20 of 100 (Routine)
Oconto 4 W	United States	Record low minimum temperature	-4.4 C (24.1 F)	20 of 100 (Routine)
Qualco (Kaluna Vineyards)	Australia	Record daily precipitation	7.1 mm (0.28 in)	19 of 100 (Routine)
Calvinia	South Africa	Record daily precipitation	10.0 mm (0.4 in)	19 of 100 (Routine)
Stratton	United States	Record daily precipitation	9.4 mm (0.37 in)	19 of 100 (Routine)
Honomanu 450	United States	Record high maximum temperature	27.2 C (81.0 F)	19 of 100 (Routine)
Vrugbaar	South Africa	Record daily precipitation	33.3 mm (1.3 in)	18 of 100 (Routine)
Rocky Ford 2 SE	United States	Record low maximum temperature	8.9 C (48.0 F)	18 of 100 (Routine)
Dulce	United States	Record high minimum temperature	7.2 C (45.0 F)	18 of 100 (Routine)
Tarboro 1 S	United States	Record low maximum temperature	16.1 C (61.0 F)	18 of 100 (Routine)
Harrogate	Australia	Record daily precipitation	19.1 mm (0.8 in)	17 of 100 (Routine)
Uralsk	Kazakhstan	Record low minimum temperature	-0.7 C (30.7 F)	17 of 100 (Routine)
Kazan	Russia	Record low maximum temperature	2.1 C (35.8 F)	17 of 100 (Routine)
Nevada City	United States	Record high maximum temperature	34.4 C (93.9 F)	17 of 100 (Routine)
Neosho	United States	Record low maximum temperature	15.6 C (60.1 F)	17 of 100 (Routine)
Ft Robinson	United States	Record daily precipitation	18.5 mm (0.7 in)	17 of 100 (Routine)
Newkirk 5NE	United States	Record low maximum temperature	15.6 C (60.1 F)	17 of 100 (Routine)
Melbourne Regional Office	Australia	Record high minimum temperature	15.3 C (59.5 F)	16 of 100 (Routine)
Welgelegen(Middlemnt	South Africa	Record daily precipitation	15.0 mm (0.6 in)	16 of 100 (Routine)
Livingston	United States	Record low minimum temperature	-4.4 C (24.1 F)	16 of 100 (Routine)
Madrid	United States	Record daily precipitation	8.6 mm (0.34 in)	16 of 100 (Routine)
Chandler	United States	Record low maximum temperature	16.7 C (62.1 F)	16 of 100 (Routine)
Kingfisher	United States	Record low maximum temperature	16.7 C (62.1 F)	16 of 100 (Routine)
Blanco	United States	Record high maximum temperature	35.0 C (95.0 F)	16 of 100 (Routine)

Counts by Type and Timescale

233 records

Records set or tied on 12 May 1939 by type: Highest daily maximum 33, Lowest daily maximum 48, Highest daily minimum 25, Lowest daily minimum 43, Heaviest daily rainfall 84.

Records on 12 May 1939 by type
Record type	Records
Highest daily maximum	33
Lowest daily maximum	48
Highest daily minimum	25
Lowest daily minimum	43
Heaviest daily rainfall	84
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 May 1939 by timescale: all-time 0, monthly 1, daily 232.

How Much Records Were Beaten By

165 broken records

Margins by which the 165 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 58.7. Ties are not counted.

Top 20 by Significance

12 May 1939

Top 20 records on 12 May 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 May 1939	Makaweli 965, US	monthly rain	82.3 mm (3.2 in)	26.2 mm (1.0 in)	25 years	56 of 100 (Notable)
12 May 1939	Prince Rupert, CA	daily rain	61.2 mm (2.4 in)	51.5 mm (2.0 in)	29 years	51 of 100 (Notable)
12 May 1939	E Lawai 934, US	daily rain	75.2 mm (3.0 in)	39.6 mm (1.6 in)	25 years	49 of 100 (Notable)
12 May 1939	Ulm, DE	daily rain	30.4 mm (1.2 in)	21.3 mm (0.8 in)	16 years	45 of 100 (Notable)
12 May 1939	Cookhouse (Sar), ZA	daily rain	69.9 mm (2.8 in)	58.7 mm (2.3 in)	4 years	45 of 100 (Notable)
12 May 1939	Kaisersbach-Cronhutte, DE	daily rain	36.8 mm (1.4 in)	12.0 mm (0.5 in)	48 years	37 of 100 (Notable)
12 May 1939	Guthrie 5S, US	daily rain	56.4 mm (2.2 in)	46.2 mm (1.8 in)	24 years	37 of 100 (Notable)
12 May 1939	Milan, IT	daily rain	50.4 mm (2.0 in)	8.2 mm (0.32 in)	60 years	33 of 100 (Routine)
12 May 1939	Tulbagh (Pol), ZA	daily rain	38.6 mm (1.5 in)	27.2 mm (1.1 in)	1 year	32 of 100 (Routine)
12 May 1939	St John's, CA	daily high max	21.7 C (71.1 F)	1.7 C (3.1 F)	59 years	26 of 100 (Routine)
12 May 1939	Koloa 936, US	daily rain	47.0 mm (1.9 in)	13.2 mm (0.5 in)	25 years	25 of 100 (Routine)
12 May 1939	Durbanville (Pol), ZA	daily rain	26.4 mm (1.0 in)	9.1 mm (0.36 in)	37 years	23 of 100 (Routine)
12 May 1939	Paarl (Tnk), ZA	daily rain	53.3 mm (2.1 in)	11.6 mm (0.5 in)	36 years	23 of 100 (Routine)
12 May 1939	Port Blair, IN	daily rain	57.2 mm (2.3 in)	22.4 mm (0.9 in)	34 years	22 of 100 (Routine)
12 May 1939	Napa State Hospital, US	daily high max	34.4 C (93.9 F)	2.7 C (4.9 F)	43 years	22 of 100 (Routine)
12 May 1939	Salekhard, RU	daily rain	19.7 mm (0.8 in)	6.7 mm (0.26 in)	30 years	20 of 100 (Routine)
12 May 1939	Pieter Meintjies (Sar), ZA	daily rain	17.8 mm (0.7 in)	17.8 mm (0.7 in)	38 years	20 of 100 (Routine)
12 May 1939	Augsburg (Sankt Stephan), DE	daily rain	19.0 mm (0.7 in)	7.8 mm (0.31 in)	51 years	20 of 100 (Routine)
12 May 1939	Kunzelsau, DE	daily rain	18.7 mm (0.7 in)	8.1 mm (0.32 in)	48 years	20 of 100 (Routine)
12 May 1939	Quorn, AU	daily rain	12.7 mm (0.5 in)	6.6 mm (0.26 in)	50 years	20 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

1814 to 1939

Records set or tied on this calendar date in each year from 1814 to 1939. 1939 had 233 records.

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

Records on 05-12 in each year
Year	Records
1814	2
1823	1
1825	1
1827	1
1834	1
1837	1
1838	1
1845	1
1847	1
1848	1
1849	2
1851	1
1855	2
1860	2
1862	2
1863	1
1867	1
1868	1
1872	2
1874	1
1877	1
1878	1
1879	1
1881	4
1882	5
1884	3
1885	2
1886	3
1887	1
1888	1
1889	1
1890	1
1891	4
1894	1
1895	1
1896	1
1897	7
1898	3
1900	3
1901	6
1902	5
1903	7
1904	11
1905	10
1906	20
1907	53
1908	12
1909	4
1910	9
1911	37
1912	46
1913	6
1914	36
1915	50
1916	42
1917	54
1918	113
1919	42
1920	19
1921	64
1922	43
1923	109
1924	245
1925	275
1926	121
1927	167
1928	192
1929	172
1930	500
1931	350
1932	199
1933	476
1934	293
1935	404
1936	329
1937	214
1938	394
1939	233
1940	440
1941	568
1942	418
1943	803
1944	368
1945	389
1946	653
1947	286
1948	390
1949	414
1950	283
1951	427
1952	711
1953	891
1954	305
1955	265
1956	1,568
1957	454
1958	714
1959	740
1960	1,583
1961	381
1962	713
1963	777
1964	401
1965	196
1966	909
1967	810
1968	890
1969	506
1970	698
1971	668
1972	641
1973	393
1974	702
1975	418
1976	541
1977	855
1978	802
1979	763
1980	684
1981	855
1982	763
1983	1,281
1984	887
1985	1,199
1986	473
1987	1,295
1988	619
1989	856
1990	617
1991	1,177
1992	1,022
1993	1,208
1994	738
1995	1,190
1996	1,420
1997	921
1998	1,576
1999	881
2000	1,486
2001	1,015
2002	1,027
2003	861
2004	1,054
2005	1,369
2006	797
2007	630
2008	858
2009	687
2010	1,250
2011	1,119
2012	660
2013	689
2014	949
2015	958
2016	421
2017	529
2018	819
2019	784
2020	1,338
2021	712
2022	1,930
2023	429
2024	447
2025	940
2026	1,110

Download the Data

Data for records on 1939-05-12: 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 10	142
10 to 20	15
20 to 30	4
30 to 40	1
40 to 50	1
50 to 60	2