Weather Records on 1 May 1909

49 weather records were set or tied worldwide on 1 May 1909. Highest significance: Cape Otway Lighthouse, AU.

Key Facts for 1 May 1909

On 1 May 1909, 49 weather records were set or tied at long-record stations worldwide.
0 were record highs and 25 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 38 daily.
Cape Otway Lighthouse set a daily record precipitation of 29.0 mm (1.1 in) on 1 May 1909.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 445 records.

Record Map

49 stations

49 station records on 1 May 1909 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 1909: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cape Otway Lighthouse	Australia	Record daily precipitation	29.0 mm (1.1 in)	45 of 100 (Notable)
Montreal McGill	Canada	Record daily precipitation	31.0 mm (1.2 in)	37 of 100 (Notable)
Wilsons Promontory Lighthouse	Australia	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Athens	United States	Record daily precipitation	42.2 mm (1.7 in)	33 of 100 (Routine)
Middletown 4 W	United States	Record low maximum temperature	5.0 C (41.0 F)	27 of 100 (Routine)
Santa Fe	United States	Record low minimum temperature	-6.7 C (19.9 F)	27 of 100 (Routine)
La Crosse Wb City	United States	Record low maximum temperature	1.7 C (35.1 F)	27 of 100 (Routine)
Madison Wb City	United States	Record low maximum temperature	1.1 C (34.0 F)	26 of 100 (Routine)
Port Arthur	Canada	Record low maximum temperature	-0.6 C (30.9 F)	25 of 100 (Routine)
Weldon	United States	Record daily precipitation	48.8 mm (1.9 in)	21 of 100 (Routine)
Dubuque River	United States	Record low maximum temperature	2.2 C (36.0 F)	21 of 100 (Routine)
Brome	Canada	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Atlantic City Marina	United States	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Peterborough	Canada	Record daily snowfall	2.5 cm (1.0 in)	20 of 100 (Routine)
Vastervik	Sweden	Record daily precipitation	10.5 mm (0.4 in)	18 of 100 (Routine)
Madison Wb City	United States	Record low minimum temperature	-2.2 C (28.0 F)	17 of 100 (Routine)
La Crosse Wb City	United States	Record low minimum temperature	-2.2 C (28.0 F)	15 of 100 (Routine)
Quebec	Canada	Record daily precipitation	24.1 mm (0.9 in)	13 of 100 (Routine)
Dubuque River	United States	Record low minimum temperature	-1.1 C (30.0 F)	13 of 100 (Routine)
Omeo Comparison	Australia	Record daily precipitation	6.4 mm (0.25 in)	12 of 100 (Routine)
Berlin-Dahlem	Germany	Record low maximum temperature	7.5 C (45.5 F)	12 of 100 (Routine)
Armagh	United Kingdom	Record low minimum temperature	-0.7 C (30.7 F)	12 of 100 (Routine)
Wagga Wagga (Kooringal)	Australia	Record low maximum temperature	14.2 C (57.6 F)	11 of 100 (Routine)
Collendina	Australia	Record daily precipitation	3.6 mm (0.14 in)	11 of 100 (Routine)
Chattanooga Wb City	United States	Record low maximum temperature	13.3 C (55.9 F)	10 of 100 (Routine)
Mount Gambier Post Office	Australia	Record daily precipitation	5.6 mm (0.22 in)	9 of 100 (Routine)
Yarrawonga Post Office	Australia	Record daily precipitation	3.0 mm (0.12 in)	9 of 100 (Routine)
Tranebjerg	Denmark	Record low maximum temperature	6.9 C (44.4 F)	9 of 100 (Routine)
Portland	United States	Record low minimum temperature	-0.6 C (30.9 F)	9 of 100 (Routine)
Concord	United States	Record low maximum temperature	6.1 C (43.0 F)	9 of 100 (Routine)
Clare Post Office	Australia	Record daily precipitation	7.1 mm (0.28 in)	8 of 100 (Routine)
Vineland	United States	Record daily precipitation	10.4 mm (0.4 in)	8 of 100 (Routine)
Philadelphia City	United States	Record daily precipitation	8.4 mm (0.33 in)	8 of 100 (Routine)
Port Albert	Australia	Record daily precipitation	15.7 mm (0.6 in)	7 of 100 (Routine)
Peterborough	Canada	Record daily precipitation	8.9 mm (0.35 in)	7 of 100 (Routine)
Portland	Australia	Record daily precipitation	6.1 mm (0.24 in)	6 of 100 (Routine)
Stornoway Airport	United Kingdom	Record low maximum temperature	6.1 C (43.0 F)	6 of 100 (Routine)
Milwaukee Wb City	United States	Record low maximum temperature	2.2 C (36.0 F)	5 of 100 (Routine)
Milwaukee Wb City	United States	Record low minimum temperature	-2.2 C (28.0 F)	5 of 100 (Routine)
Escanaba	United States	Record low maximum temperature	1.1 C (34.0 F)	5 of 100 (Routine)
Euston Post Office	Australia	Record daily precipitation	2.5 mm (0.10 in)	4 of 100 (Routine)
Mulwala Homestead	Australia	Record daily precipitation	2.5 mm (0.10 in)	4 of 100 (Routine)
Quebec	Canada	Record low maximum temperature	2.8 C (37.0 F)	4 of 100 (Routine)
Little Rock St Capitol	United States	Record low maximum temperature	14.4 C (57.9 F)	4 of 100 (Routine)
Portland	United States	Record low maximum temperature	4.4 C (39.9 F)	4 of 100 (Routine)
Nordby (Fano)	Denmark	Record low minimum temperature	1.4 C (34.5 F)	2 of 100 (Routine)
Wentworth Post Office	Australia	Record daily precipitation	1.0 mm (0.04 in)	1 of 100 (Routine)
Kingston Queens U	Canada	Record daily precipitation	21.8 mm (0.9 in)	1 of 100 (Routine)
Peterborough	Canada	Record low maximum temperature	5.6 C (42.1 F)	1 of 100 (Routine)

Counts by Type and Timescale

49 records

Records set or tied on 1 May 1909 by type: Lowest daily maximum 17, Lowest daily minimum 8, Heaviest daily rainfall 23, Heaviest daily snowfall 1.

Records on 1 May 1909 by type
Record type	Records
Highest daily maximum	0
Lowest daily maximum	17
Highest daily minimum	0
Lowest daily minimum	8
Heaviest daily rainfall	23
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 1 May 1909 by timescale: all-time 0, monthly 11, daily 38.

How Much Records Were Beaten By

40 broken records

Margins by which the 40 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 26.2. Ties are not counted.

Top 20 by Significance

1 May 1909

Top 20 records on 1 May 1909 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 1909	Cape Otway Lighthouse, AU	daily rain	29.0 mm (1.1 in)	19.9 mm (0.8 in)	16 years	45 of 100 (Notable)
1 May 1909	Montreal McGill, CA	daily rain	31.0 mm (1.2 in)	22.4 mm (0.9 in)	0 years	37 of 100 (Notable)
1 May 1909	Wilsons Promontory Lighthouse, AU	daily rain	35.6 mm (1.4 in)	21.4 mm (0.8 in)	16 years	34 of 100 (Routine)
1 May 1909	Athens, US	daily rain	42.2 mm (1.7 in)	26.2 mm (1.0 in)	35 years	33 of 100 (Routine)
1 May 1909	Middletown 4 W, US	monthly low max	5.0 C (41.0 F)	2.2 C (4.0 F)	33 years	27 of 100 (Routine)
1 May 1909	Santa Fe, US	monthly low min	-6.7 C (19.9 F)	2.3 C (4.1 F)	28 years	27 of 100 (Routine)
1 May 1909	La Crosse Wb City, US	monthly low max	1.7 C (35.1 F)	2.7 C (4.9 F)	33 years	27 of 100 (Routine)
1 May 1909	Madison Wb City, US	monthly low max	1.1 C (34.0 F)	1.7 C (3.1 F)	33 years	26 of 100 (Routine)
1 May 1909	Port Arthur, CA	monthly low max	-0.6 C (30.9 F)	2.3 C (4.1 F)	26 years	25 of 100 (Routine)
1 May 1909	Weldon, US	daily rain	48.8 mm (1.9 in)	20.4 mm (0.8 in)	23 years	21 of 100 (Routine)
1 May 1909	Dubuque River, US	monthly low max	2.2 C (36.0 F)	2.2 C (4.0 F)	18 years	21 of 100 (Routine)
1 May 1909	Brome, CA	daily rain	24.1 mm (0.9 in)	14.4 mm (0.6 in)	18 years	20 of 100 (Routine)
1 May 1909	Atlantic City Marina, US	daily rain	20.6 mm (0.8 in)	13.2 mm (0.5 in)	11 years	20 of 100 (Routine)
1 May 1909	Peterborough, CA	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	42 years	20 of 100 (Routine)
1 May 1909	Vastervik, SE	daily rain	10.5 mm (0.4 in)	0.7 mm (0.03 in)	41 years	18 of 100 (Routine)
1 May 1909	Madison Wb City, US	daily low min	-2.2 C (28.0 F)	1.6 C (2.9 F)	33 years	17 of 100 (Routine)
1 May 1909	La Crosse Wb City, US	daily low min	-2.2 C (28.0 F)	1.6 C (2.9 F)	31 years	15 of 100 (Routine)
1 May 1909	Quebec, CA	daily rain	24.1 mm (0.9 in)	7.1 mm (0.28 in)	0 years	13 of 100 (Routine)
1 May 1909	Dubuque River, US	daily low min	-1.1 C (30.0 F)	0.5 C (0.9 F)	31 years	13 of 100 (Routine)
1 May 1909	Omeo Comparison, AU	daily rain	6.4 mm (0.25 in)	1.6 mm (0.06 in)	26 years	12 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 1909

Records set or tied on this calendar date in each year from 1795 to 1909. 1909 had 49 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 1909-05-01: 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 5	31
5 to 10	1
10 to 15	2
15 to 20	1
20 to 25	3
25 to 30	2