Weather Records on 1 May 1941

333 weather records were set or tied worldwide on 1 May 1941. Highest significance: Pierson, CA.

Key Facts for 1 May 1941

On 1 May 1941, 333 weather records were set or tied at long-record stations worldwide.
141 were record highs and 21 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 14 monthly and 319 daily.
Pierson set a monthly record daily precipitation of 84.8 mm (3.3 in) on 1 May 1941.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 443 records.

Record Map

333 stations

333 station records on 1 May 1941 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 1941: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pierson	Canada	Record daily precipitation	84.8 mm (3.3 in)	57 of 100 (Notable)
Roermond	Netherlands	Record daily precipitation	32.5 mm (1.3 in)	56 of 100 (Notable)
Ancho	United States	Record daily precipitation	69.9 mm (2.8 in)	53 of 100 (Notable)
Gorakhpur	India	Record daily precipitation	43.4 mm (1.7 in)	49 of 100 (Notable)
Jalpaiguri	India	Record daily precipitation	141.2 mm (5.6 in)	47 of 100 (Notable)
Bihar	India	Record daily precipitation	36.8 mm (1.4 in)	45 of 100 (Notable)
Marungapuri	India	Record daily precipitation	63.5 mm (2.5 in)	45 of 100 (Notable)
Bansgaon	India	Record daily precipitation	29.2 mm (1.1 in)	42 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record daily precipitation	98.8 mm (3.9 in)	41 of 100 (Notable)
Kodumudi	India	Record daily precipitation	54.9 mm (2.2 in)	38 of 100 (Notable)
Carlsbad	United States	Record daily precipitation	29.2 mm (1.1 in)	38 of 100 (Notable)
Chatham	Canada	Record low minimum temperature	-6.1 C (21.0 F)	37 of 100 (Notable)
Purnea	India	Record daily precipitation	42.7 mm (1.7 in)	35 of 100 (Notable)
Potkabari	India	Record daily precipitation	66.3 mm (2.6 in)	35 of 100 (Notable)
Douglas Smelter	United States	Record low maximum temperature	12.8 C (55.0 F)	35 of 100 (Notable)
Ft Stanton	United States	Record daily precipitation	26.4 mm (1.0 in)	35 of 100 (Notable)
Gondwara(Kohra)	India	Record daily precipitation	44.5 mm (1.8 in)	33 of 100 (Routine)
Charlotte	United States	Record daily precipitation	36.6 mm (1.4 in)	33 of 100 (Routine)
Khutauna	India	Record daily precipitation	125.7 mm (4.9 in)	32 of 100 (Routine)
Tucumcari	United States	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Belthangady	India	Record daily precipitation	73.2 mm (2.9 in)	31 of 100 (Routine)
Chaukuri	India	Record daily precipitation	29.2 mm (1.1 in)	31 of 100 (Routine)
Strydenberg (Pol)	South Africa	Record daily precipitation	27.9 mm (1.1 in)	31 of 100 (Routine)
Brejo Santo	Brazil	Record daily precipitation	59.1 mm (2.3 in)	30 of 100 (Routine)
Mayaguez City	Puerto Rico [United States]	Record high minimum temperature	25.0 C (77.0 F)	29 of 100 (Routine)
San Jon	United States	Record daily precipitation	58.7 mm (2.3 in)	29 of 100 (Routine)
Jefferson	United States	Record daily precipitation	33.3 mm (1.3 in)	29 of 100 (Routine)
Bettiah	India	Record daily precipitation	29.2 mm (1.1 in)	28 of 100 (Routine)
Ageon	India	Record daily precipitation	25.4 mm (1.0 in)	28 of 100 (Routine)
Escanaba	United States	Record high minimum temperature	11.1 C (52.0 F)	28 of 100 (Routine)
Somwarpet	India	Record daily precipitation	46.2 mm (1.8 in)	27 of 100 (Routine)
Naples 1 SW	United States	Record daily precipitation	49.5 mm (1.9 in)	27 of 100 (Routine)
Revelstoke	Canada	Record high minimum temperature	9.4 C (48.9 F)	26 of 100 (Routine)
Dhanaha	India	Record daily precipitation	45.7 mm (1.8 in)	26 of 100 (Routine)
Sussex	Canada	Record low minimum temperature	-6.7 C (19.9 F)	25 of 100 (Routine)
Rajmahal	India	Record daily precipitation	58.4 mm (2.3 in)	25 of 100 (Routine)
Porthill	United States	Record high minimum temperature	11.7 C (53.1 F)	24 of 100 (Routine)
Priest Rvr Exp STN	United States	Record high minimum temperature	11.7 C (53.1 F)	24 of 100 (Routine)
Kishanganj	India	Record daily precipitation	40.6 mm (1.6 in)	23 of 100 (Routine)
Northport	United States	Record high minimum temperature	11.7 C (53.1 F)	23 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record high minimum temperature	24.4 C (75.9 F)	22 of 100 (Routine)
Ponce 4 E	Puerto Rico [United States]	Record high minimum temperature	24.4 C (75.9 F)	22 of 100 (Routine)
Grenora	United States	Record high minimum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Kingston	United States	Record high maximum temperature	26.7 C (80.1 F)	22 of 100 (Routine)
Rocky Mt	United States	Record high minimum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Tot-Ma	Russia	Record low minimum temperature	-10.0 C (14.0 F)	21 of 100 (Routine)
St Joseph	United States	Record daily precipitation	37.8 mm (1.5 in)	21 of 100 (Routine)
Corona	United States	Record daily precipitation	25.9 mm (1.0 in)	21 of 100 (Routine)
Jamestown State Hosp	United States	Record high minimum temperature	11.1 C (52.0 F)	21 of 100 (Routine)
Colville	United States	Record high minimum temperature	11.7 C (53.1 F)	21 of 100 (Routine)
Northport	United States	Record daily precipitation	23.9 mm (0.9 in)	20 of 100 (Routine)
Redrock 1 NNE	United States	Record daily precipitation	17.5 mm (0.7 in)	20 of 100 (Routine)
Kelowna	Canada	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Santa Fe	United States	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Tucson WFO	United States	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Socorro	United States	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Petropavlovsk	Kazakhstan	Record daily precipitation	11.0 mm (0.4 in)	20 of 100 (Routine)
Achinsk	Russia	Record daily precipitation	11.5 mm (0.5 in)	20 of 100 (Routine)
Oracle	United States	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Willcox	United States	Record daily precipitation	18.8 mm (0.7 in)	20 of 100 (Routine)

Counts by Type and Timescale

333 records

Records set or tied on 1 May 1941 by type: Highest daily maximum 43, Lowest daily maximum 5, Highest daily minimum 98, Lowest daily minimum 16, Heaviest daily rainfall 169, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 1 May 1941 by type
Record type	Records
Highest daily maximum	43
Lowest daily maximum	5
Highest daily minimum	98
Lowest daily minimum	16
Heaviest daily rainfall	169
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 1 May 1941 by timescale: all-time 0, monthly 14, daily 319.

How Much Records Were Beaten By

276 broken records

Margins by which the 276 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 121.4. Ties are not counted.

Top 20 by Significance

1 May 1941

Top 20 records on 1 May 1941 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 1941	Pierson, CA	monthly rain	84.8 mm (3.3 in)	39.1 mm (1.5 in)	13 years	57 of 100 (Notable)
1 May 1941	Roermond, NL	daily rain	32.5 mm (1.3 in)	14.9 mm (0.6 in)	62 years	56 of 100 (Notable)
1 May 1941	Ancho, US	monthly rain	69.9 mm (2.8 in)	26.7 mm (1.1 in)	0 years	53 of 100 (Notable)
1 May 1941	Gorakhpur, IN	daily rain	43.4 mm (1.7 in)	43.4 mm (1.7 in)	40 years	49 of 100 (Notable)
1 May 1941	Jalpaiguri, IN	daily rain	141.2 mm (5.6 in)	121.4 mm (4.8 in)	12 years	47 of 100 (Notable)
1 May 1941	Bihar, IN	daily rain	36.8 mm (1.4 in)	36.8 mm (1.4 in)	40 years	45 of 100 (Notable)
1 May 1941	Marungapuri, IN	daily rain	63.5 mm (2.5 in)	52.1 mm (2.1 in)	35 years	45 of 100 (Notable)
1 May 1941	Bansgaon, IN	daily rain	29.2 mm (1.1 in)	29.2 mm (1.1 in)	40 years	42 of 100 (Notable)
1 May 1941	Aibonito 1 S, PR	daily rain	98.8 mm (3.9 in)	70.9 mm (2.8 in)	8 years	41 of 100 (Notable)
1 May 1941	Kodumudi, IN	daily rain	54.9 mm (2.2 in)	46.0 mm (1.8 in)	26 years	38 of 100 (Notable)
1 May 1941	Carlsbad, US	daily rain	29.2 mm (1.1 in)	24.1 mm (0.9 in)	10 years	38 of 100 (Notable)
1 May 1941	Chatham, CA	monthly low min	-6.1 C (21.0 F)	0.5 C (0.9 F)	67 years	37 of 100 (Notable)
1 May 1941	Purnea, IN	daily rain	42.7 mm (1.7 in)	40.7 mm (1.6 in)	11 years	35 of 100 (Notable)
1 May 1941	Potkabari, IN	daily rain	66.3 mm (2.6 in)	52.6 mm (2.1 in)	7 years	35 of 100 (Notable)
1 May 1941	Douglas Smelter, US	monthly low max	12.8 C (55.0 F)	4.4 C (7.9 F)	33 years	35 of 100 (Notable)
1 May 1941	Ft Stanton, US	daily rain	26.4 mm (1.0 in)	16.7 mm (0.7 in)	19 years	35 of 100 (Notable)
1 May 1941	Gondwara(Kohra), IN	daily rain	44.5 mm (1.8 in)	42.2 mm (1.7 in)	14 years	33 of 100 (Routine)
1 May 1941	Charlotte, US	daily rain	36.6 mm (1.4 in)	18.8 mm (0.7 in)	31 years	33 of 100 (Routine)
1 May 1941	Khutauna, IN	monthly rain	125.7 mm (4.9 in)	30.7 mm (1.2 in)	3 years	32 of 100 (Routine)
1 May 1941	Tucumcari, US	daily rain	50.8 mm (2.0 in)	32.8 mm (1.3 in)	22 years	32 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

1795 to 1941

Records set or tied on this calendar date in each year from 1795 to 1941. 1941 had 333 records.

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

Records on 05-01 in each year
Year	Records
1795	1
1802	1
1804	1
1814	1
1818	1
1835	1
1836	1
1840	1
1846	2
1847	1
1850	1
1851	1
1857	1
1860	1
1861	1
1864	2
1865	1
1868	2
1872	1
1875	4
1878	2
1879	2
1880	3
1881	2
1884	1
1885	1
1886	2
1887	2
1888	2
1889	3
1890	2
1891	5
1892	6
1893	2
1894	5
1896	1
1897	4
1898	1
1899	8
1900	1
1901	5
1902	7
1903	9
1904	9
1905	13
1906	12
1907	31
1908	20
1909	49
1910	13
1911	22
1912	18
1913	54
1914	23
1915	27
1916	27
1917	37
1918	34
1919	150
1920	186
1921	41
1922	92
1923	64
1924	63
1925	118
1926	500
1927	125
1928	190
1929	142
1930	263
1931	537
1932	220
1933	706
1934	305
1935	276
1936	368
1937	218
1938	304
1939	227
1940	731
1941	333
1942	1,036
1943	526
1944	229
1945	350
1946	415
1947	655
1948	774
1949	405
1950	439
1951	894
1952	557
1953	917
1954	1,506
1955	772
1956	1,106
1957	359
1958	448
1959	764
1960	737
1961	588
1962	615
1963	704
1964	312
1965	360
1966	707
1967	948
1968	426
1969	429
1970	1,075
1971	444
1972	562
1973	841
1974	589
1975	286
1976	673
1977	545
1978	1,202
1979	612
1980	507
1981	1,265
1982	508
1983	1,423
1984	640
1985	789
1986	512
1987	1,098
1988	1,058
1989	949
1990	922
1991	633
1992	1,201
1993	1,101
1994	1,210
1995	1,365
1996	1,439
1997	804
1998	951
1999	932
2000	809
2001	1,106
2002	1,221
2003	964
2004	887
2005	1,320
2006	734
2007	857
2008	979
2009	679
2010	1,151
2011	716
2012	796
2013	976
2014	941
2015	550
2016	844
2017	1,163
2018	519
2019	788
2020	1,099
2021	834
2022	319
2023	912
2024	458
2025	430
2026	623

Download the Data

Data for records on 1941-05-01: 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 20	244
20 to 40	22
40 to 60	8
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	1