Weather Records on 9 May 1927

343 weather records were set or tied worldwide on 9 May 1927. Highest significance: Marengo, US.

Key Facts for 9 May 1927

On 9 May 1927, 343 weather records were set or tied at long-record stations worldwide.
190 were record highs and 48 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 9 monthly and 334 daily.
Marengo set a daily record precipitation of 62.2 mm (2.4 in) on 9 May 1927.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 433 records.

Record Map

343 stations

343 station records on 9 May 1927 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 1927: highest significance records shown on the map
Station	Country	Type	Value	Significance
Marengo	United States	Record daily precipitation	62.2 mm (2.4 in)	49 of 100 (Notable)
Jamestown State Hosp	United States	Record daily precipitation	46.2 mm (1.8 in)	45 of 100 (Notable)
Geilo	Norway	Record snow depth	140.0 cm (55.1 in)	43 of 100 (Notable)
Glendive	United States	Record daily snowfall	15.2 cm (6.0 in)	43 of 100 (Notable)
Morden	Canada	Record daily precipitation	45.7 mm (1.8 in)	40 of 100 (Notable)
Minto	United States	Record daily precipitation	39.4 mm (1.6 in)	40 of 100 (Notable)
Oconto 4 W	United States	Record daily precipitation	46.2 mm (1.8 in)	40 of 100 (Notable)
St Albans	Canada	Record daily snowfall	17.0 cm (6.7 in)	39 of 100 (Notable)
Miles City	United States	Record daily snowfall	17.8 cm (7.0 in)	38 of 100 (Notable)
Tiskilwa 2 SE	United States	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Walnut	United States	Record daily precipitation	40.9 mm (1.6 in)	37 of 100 (Notable)
Camp Crook	United States	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)
Pocahontas 1	United States	Record daily precipitation	52.6 mm (2.1 in)	35 of 100 (Notable)
Hamilton	Canada	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
New London	United States	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Welland	Canada	Record daily precipitation	34.8 mm (1.4 in)	33 of 100 (Routine)
Jackson	United States	Record daily precipitation	52.1 mm (2.1 in)	32 of 100 (Routine)
Hohenpeissenberg	Germany	Record daily precipitation	38.6 mm (1.5 in)	30 of 100 (Routine)
Buffalo	United States	Record daily precipitation	29.0 mm (1.1 in)	30 of 100 (Routine)
Napoleon	United States	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Stevens Pt	United States	Record daily precipitation	46.7 mm (1.8 in)	30 of 100 (Routine)
Bee Branch	United States	Record daily precipitation	50.8 mm (2.0 in)	28 of 100 (Routine)
Aberdeen	United States	Record daily precipitation	42.7 mm (1.7 in)	28 of 100 (Routine)
Treherne	Canada	Record daily precipitation	28.2 mm (1.1 in)	27 of 100 (Routine)
Treherne	Canada	Record daily snowfall	5.1 cm (2.0 in)	26 of 100 (Routine)
Woodstock	Canada	Record daily precipitation	40.9 mm (1.6 in)	26 of 100 (Routine)
Bardstown	United States	Record high minimum temperature	24.4 C (75.9 F)	26 of 100 (Routine)
Addison	United States	Record daily precipitation	33.5 mm (1.3 in)	26 of 100 (Routine)
Angelica	United States	Record daily precipitation	32.0 mm (1.3 in)	26 of 100 (Routine)
Wiarton	Canada	Record daily precipitation	44.5 mm (1.8 in)	25 of 100 (Routine)
Dickinson Exp STN	United States	Record daily precipitation	41.1 mm (1.6 in)	25 of 100 (Routine)
Manitowoc	United States	Record daily precipitation	41.7 mm (1.6 in)	24 of 100 (Routine)
Prairie du Chien	United States	Record daily precipitation	40.6 mm (1.6 in)	24 of 100 (Routine)
Monmouth	United States	Record daily precipitation	31.2 mm (1.2 in)	23 of 100 (Routine)
Marengo	United States	Record high minimum temperature	22.8 C (73.0 F)	23 of 100 (Routine)
Poplar 2 E	United States	Record daily snowfall	5.1 cm (2.0 in)	23 of 100 (Routine)
Spearfish	United States	Record low maximum temperature	0.0 C (32.0 F)	23 of 100 (Routine)
La Crosse River	United States	Record daily precipitation	26.4 mm (1.0 in)	23 of 100 (Routine)
Salem	United States	Record high minimum temperature	22.2 C (72.0 F)	22 of 100 (Routine)
Decorah	United States	Record daily precipitation	40.6 mm (1.6 in)	22 of 100 (Routine)
St John Bethlehem Aca	United States	Record high minimum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Orono	United States	Record low minimum temperature	-3.9 C (25.0 F)	22 of 100 (Routine)
Big Rapids Wtp	United States	Record daily precipitation	30.7 mm (1.2 in)	22 of 100 (Routine)
Steele 4N	United States	Record daily precipitation	25.4 mm (1.0 in)	22 of 100 (Routine)
Waukesha Wwtp	United States	Record daily precipitation	27.9 mm (1.1 in)	22 of 100 (Routine)
Lexington Bluegrass AP	United States	Record high minimum temperature	21.1 C (70.0 F)	22 of 100 (Routine)
Berkeley	United States	Record high minimum temperature	14.4 C (57.9 F)	21 of 100 (Routine)
Brooksville Chin Hill	United States	Record high maximum temperature	37.2 C (99.0 F)	21 of 100 (Routine)
Columbus	United States	Record high minimum temperature	20.0 C (68.0 F)	21 of 100 (Routine)
Richmond Wtr Wks	United States	Record high minimum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Amenia	United States	Record daily precipitation	34.3 mm (1.4 in)	21 of 100 (Routine)
Camp Crook	United States	Record low maximum temperature	0.0 C (32.0 F)	21 of 100 (Routine)
Laramie	United States	Record low maximum temperature	-2.2 C (28.0 F)	21 of 100 (Routine)
Chattanooga Wb City	United States	Record high minimum temperature	20.0 C (68.0 F)	21 of 100 (Routine)
Barrie	Canada	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Robertson	South Africa	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Baku	Azerbaijan	Record daily precipitation	6.0 mm (0.24 in)	20 of 100 (Routine)
Colinroobie	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Miles City	United States	Record snow depth	7.6 cm (3.0 in)	20 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high maximum temperature	30.6 C (87.1 F)	20 of 100 (Routine)

Counts by Type and Timescale

343 records

Records set or tied on 9 May 1927 by type: Highest daily maximum 56, Lowest daily maximum 30, Highest daily minimum 134, Lowest daily minimum 18, Heaviest daily rainfall 96, Heaviest daily snowfall 7, Deepest snow cover 2.

Records on 9 May 1927 by type
Record type	Records
Highest daily maximum	56
Lowest daily maximum	30
Highest daily minimum	134
Lowest daily minimum	18
Heaviest daily rainfall	96
Heaviest daily snowfall	7
Deepest snow cover	2

Records on 9 May 1927 by timescale: all-time 0, monthly 9, daily 334.

How Much Records Were Beaten By

297 broken records

Margins by which the 297 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 940.0. Ties are not counted.

Top 20 by Significance

9 May 1927

Top 20 records on 9 May 1927 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1927	Marengo, US	daily rain	62.2 mm (2.4 in)	57.1 mm (2.2 in)	22 years	49 of 100 (Notable)
9 May 1927	Jamestown State Hosp, US	daily rain	46.2 mm (1.8 in)	36.0 mm (1.4 in)	16 years	45 of 100 (Notable)
9 May 1927	Geilo, NO	daily snow depth	140.0 cm (55.1 in)	94.0 cm (37.0 in)	1 year	43 of 100 (Notable)
9 May 1927	Glendive, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	33 years	43 of 100 (Notable)
9 May 1927	Morden, CA	daily rain	45.7 mm (1.8 in)	25.9 mm (1.0 in)	30 years	40 of 100 (Notable)
9 May 1927	Minto, US	daily rain	39.4 mm (1.6 in)	30.0 mm (1.2 in)	16 years	40 of 100 (Notable)
9 May 1927	Oconto 4 W, US	daily rain	46.2 mm (1.8 in)	33.5 mm (1.3 in)	2 years	40 of 100 (Notable)
9 May 1927	St Albans, CA	daily snowfall	17.0 cm (6.7 in)	15.5 cm (6.1 in)	24 years	39 of 100 (Notable)
9 May 1927	Miles City, US	daily snowfall	17.8 cm (7.0 in)	16.8 cm (6.6 in)	8 years	38 of 100 (Notable)
9 May 1927	Tiskilwa 2 SE, US	daily rain	43.9 mm (1.7 in)	28.4 mm (1.1 in)	26 years	37 of 100 (Notable)
9 May 1927	Walnut, US	daily rain	40.9 mm (1.6 in)	34.3 mm (1.4 in)	8 years	37 of 100 (Notable)
9 May 1927	Camp Crook, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	30 years	37 of 100 (Notable)
9 May 1927	Pocahontas 1, US	daily rain	52.6 mm (2.1 in)	31.8 mm (1.3 in)	29 years	35 of 100 (Notable)
9 May 1927	Hamilton, CA	daily rain	31.8 mm (1.3 in)	19.6 mm (0.8 in)	26 years	34 of 100 (Routine)
9 May 1927	New London, US	daily rain	47.0 mm (1.9 in)	36.3 mm (1.4 in)	8 years	34 of 100 (Routine)
9 May 1927	Welland, CA	daily rain	34.8 mm (1.4 in)	20.8 mm (0.8 in)	12 years	33 of 100 (Routine)
9 May 1927	Jackson, US	daily rain	52.1 mm (2.1 in)	35.1 mm (1.4 in)	29 years	32 of 100 (Routine)
9 May 1927	Hohenpeissenberg, DE	daily rain	38.6 mm (1.5 in)	10.9 mm (0.4 in)	21 years	30 of 100 (Routine)
9 May 1927	Buffalo, US	daily rain	29.0 mm (1.1 in)	15.5 mm (0.6 in)	18 years	30 of 100 (Routine)
9 May 1927	Napoleon, US	daily rain	35.6 mm (1.4 in)	22.1 mm (0.9 in)	0 years	30 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

1793 to 1927

Records set or tied on this calendar date in each year from 1793 to 1927. 1927 had 343 records.

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

Records on 05-09 in each year
Year	Records
1793	1
1795	1
1806	1
1810	1
1823	1
1834	1
1838	1
1843	1
1845	2
1846	1
1848	1
1850	2
1855	2
1857	1
1858	1
1861	1
1862	1
1864	2
1865	2
1867	2
1872	1
1873	2
1874	1
1875	2
1879	4
1880	3
1882	1
1883	2
1884	3
1885	3
1889	3
1890	3
1891	3
1892	1
1893	1
1895	2
1896	4
1897	3
1898	3
1899	2
1900	2
1901	9
1902	8
1903	9
1904	14
1905	34
1906	41
1907	11
1908	16
1909	34
1910	45
1911	23
1912	23
1913	15
1914	43
1915	27
1916	26
1917	50
1918	49
1919	47
1920	56
1921	102
1922	45
1923	461
1924	262
1925	123
1926	196
1927	343
1928	302
1929	166
1930	526
1931	411
1932	132
1933	482
1934	750
1935	111
1936	622
1937	128
1938	171
1939	345
1940	237
1941	335
1942	180
1943	524
1944	412
1945	538
1946	278
1947	1,145
1948	379
1949	417
1950	660
1951	188
1952	348
1953	507
1954	489
1955	288
1956	722
1957	505
1958	355
1959	252
1960	748
1961	516
1962	435
1963	1,103
1964	503
1965	730
1966	994
1967	681
1968	545
1969	653
1970	372
1971	338
1972	587
1973	386
1974	699
1975	465
1976	714
1977	931
1978	649
1979	1,605
1980	1,030
1981	639
1982	523
1983	872
1984	892
1985	829
1986	1,253
1987	1,481
1988	594
1989	1,347
1990	850
1991	759
1992	1,476
1993	967
1994	573
1995	960
1996	1,260
1997	1,088
1998	1,182
1999	970
2000	1,114
2001	969
2002	1,489
2003	1,802
2004	926
2005	851
2006	738
2007	765
2008	693
2009	816
2010	764
2011	1,104
2012	686
2013	684
2014	754
2015	689
2016	917
2017	539
2018	879
2019	1,043
2020	1,673
2021	501
2022	1,308
2023	474
2024	792
2025	622
2026	309

Download the Data

Data for records on 1927-05-09: 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 200	296
200 to 400	0
400 to 600	0
600 to 800	0
800 to 1000	1