Weather Records on 9 May 2015

689 weather records were set or tied worldwide on 9 May 2015. Highest significance: Custer, US.

Key Facts for 9 May 2015

On 9 May 2015, 689 weather records were set or tied at long-record stations worldwide.
283 were record highs and 150 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 18 monthly and 670 daily.
Custer set a daily record snowfall of 17.8 cm (7.0 in) on 9 May 2015.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 431 records.

Record Map

689 stations

689 station records on 9 May 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Custer	United States	Record daily snowfall	17.8 cm (7.0 in)	78 of 100 (Major)
Sidney 6NNW	United States	Record daily snowfall	15.2 cm (6.0 in)	70 of 100 (Major)
Mitchell 5E	United States	Record daily precipitation	54.6 mm (2.1 in)	67 of 100 (Major)
Wheatland 4N	United States	Record daily precipitation	40.6 mm (1.6 in)	66 of 100 (Major)
Scottsbluff W B Heilig Fld AP	United States	Record daily precipitation	75.2 mm (3.0 in)	64 of 100 (Major)
Phillips	United States	Record daily precipitation	53.3 mm (2.1 in)	63 of 100 (Major)
Limon	United States	Record daily precipitation	66.8 mm (2.6 in)	63 of 100 (Major)
Bridgeport	United States	Record daily precipitation	64.8 mm (2.6 in)	61 of 100 (Major)
Sidney Muni AP	United States	Record daily precipitation	79.0 mm (3.1 in)	57 of 100 (Notable)
Minatare Dam (Usbr)	United States	Record daily precipitation	62.5 mm (2.5 in)	55 of 100 (Notable)
Sumiha	Russia	Record daily precipitation	40.9 mm (1.6 in)	54 of 100 (Notable)
Surin	Thailand	Record daily precipitation	102.6 mm (4.0 in)	53 of 100 (Notable)
Timpanogos Cave	United States	Record daily precipitation	53.3 mm (2.1 in)	53 of 100 (Notable)
Zlatoust	Russia	Record daily precipitation	34.5 mm (1.4 in)	51 of 100 (Notable)
Shadrinsk	Russia	Record daily precipitation	41.4 mm (1.6 in)	50 of 100 (Notable)
Divnoe	Russia	Record daily precipitation	99.3 mm (3.9 in)	50 of 100 (Notable)
Mancos 1SW	United States	Record daily snowfall	5.1 cm (2.0 in)	50 of 100 (Notable)
Alpine	United States	Record daily precipitation	26.4 mm (1.0 in)	50 of 100 (Notable)
Guayama 1SW	Puerto Rico [United States]	Record high minimum temperature	26.7 C (80.1 F)	48 of 100 (Notable)
Benton	United States	Record daily precipitation	53.8 mm (2.1 in)	47 of 100 (Notable)
Crestone 2 SE	United States	Record daily snowfall	40.4 cm (15.9 in)	47 of 100 (Notable)
Cheyenne	United States	Record daily precipitation	28.2 mm (1.1 in)	47 of 100 (Notable)
Hopper	United States	Record daily precipitation	83.8 mm (3.3 in)	45 of 100 (Notable)
1 ENE Fairfield	United States	Record daily precipitation	41.1 mm (1.6 in)	45 of 100 (Notable)
Idabel	United States	Record daily precipitation	101.6 mm (4.0 in)	45 of 100 (Notable)
Arkadelphia 2 N	United States	Record daily precipitation	119.4 mm (4.7 in)	44 of 100 (Notable)
Alicia 2 NNE	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Renovo	United States	Record high maximum temperature	32.8 C (91.0 F)	43 of 100 (Notable)
Dimmitt	United States	Record daily precipitation	70.4 mm (2.8 in)	43 of 100 (Notable)
Hereford	United States	Record daily precipitation	29.5 mm (1.2 in)	43 of 100 (Notable)
Bryce Canyon Np Hqrs	United States	Record daily precipitation	40.6 mm (1.6 in)	43 of 100 (Notable)
Hecla 1E	United States	Record daily precipitation	31.5 mm (1.2 in)	43 of 100 (Notable)
Flagstaff AP	United States	Record daily snowfall	10.9 cm (4.3 in)	43 of 100 (Notable)
Akron Washington Co AP	United States	Record daily precipitation	39.1 mm (1.5 in)	43 of 100 (Notable)
Mt Morris 2W	United States	Record high maximum temperature	31.7 C (89.1 F)	42 of 100 (Notable)
Agate 3 E	United States	Record daily precipitation	40.1 mm (1.6 in)	41 of 100 (Notable)
Minatare Dam (Usbr)	United States	Record low maximum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Addison	United States	Record high maximum temperature	31.7 C (89.1 F)	41 of 100 (Notable)
Hiram	United States	Record high maximum temperature	31.1 C (88.0 F)	41 of 100 (Notable)
Albany	United States	Record daily precipitation	60.5 mm (2.4 in)	41 of 100 (Notable)
Kitoi Bay	United States	Record daily precipitation	65.5 mm (2.6 in)	40 of 100 (Notable)
Burnet	United States	Record daily precipitation	56.1 mm (2.2 in)	39 of 100 (Notable)
Petersburg 1	United States	Record high minimum temperature	10.0 C (50.0 F)	39 of 100 (Notable)
Parker Rsvr	United States	Record low minimum temperature	5.0 C (41.0 F)	38 of 100 (Notable)
Adel	United States	Record low minimum temperature	-7.2 C (19.0 F)	38 of 100 (Notable)
Crescent Lake Nwr	United States	Record daily precipitation	40.9 mm (1.6 in)	38 of 100 (Notable)
Onida 4 NW	United States	Record low maximum temperature	5.0 C (41.0 F)	38 of 100 (Notable)
Imperial Muni AP	United States	Record daily precipitation	51.1 mm (2.0 in)	38 of 100 (Notable)
Parker	United States	Record low maximum temperature	22.8 C (73.0 F)	37 of 100 (Notable)
Mayville	United States	Record low maximum temperature	5.0 C (41.0 F)	37 of 100 (Notable)
Wooster Exp STN	United States	Record high maximum temperature	31.1 C (88.0 F)	37 of 100 (Notable)
Conroe	United States	Record high minimum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Flomot 4 NE	United States	Record daily precipitation	68.6 mm (2.7 in)	37 of 100 (Notable)
Friona	United States	Record daily precipitation	33.5 mm (1.3 in)	37 of 100 (Notable)
Erie Intl AP	United States	Record high maximum temperature	30.6 C (87.1 F)	37 of 100 (Notable)
Troitsk	Russia	Record daily precipitation	46.7 mm (1.8 in)	36 of 100 (Notable)
Newhope 6 S	United States	Record daily precipitation	120.7 mm (4.8 in)	36 of 100 (Notable)
Northglenn	United States	Record daily precipitation	42.9 mm (1.7 in)	36 of 100 (Notable)
Rochester	United States	Record high minimum temperature	18.3 C (64.9 F)	36 of 100 (Notable)
Augustine 2E	United States	Record low maximum temperature	12.2 C (54.0 F)	36 of 100 (Notable)

Counts by Type and Timescale

689 records

Records set or tied on 9 May 2015 by type: Highest daily maximum 150, Lowest daily maximum 90, Highest daily minimum 133, Lowest daily minimum 60, Heaviest daily rainfall 214, Heaviest daily snowfall 25, Deepest snow cover 17.

Records on 9 May 2015 by type
Record type	Records
Highest daily maximum	150
Lowest daily maximum	90
Highest daily minimum	133
Lowest daily minimum	60
Heaviest daily rainfall	214
Heaviest daily snowfall	25
Deepest snow cover	17

Records on 9 May 2015 by timescale: all-time 1, monthly 18, daily 670.

How Much Records Were Beaten By

545 broken records

Margins by which the 545 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 188.0. Ties are not counted.

Top 20 by Significance

9 May 2015

Top 20 records on 9 May 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 2015	Custer, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	102 years	78 of 100 (Major)
9 May 2015	Sidney 6NNW, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	104 years	70 of 100 (Major)
9 May 2015	Mitchell 5E, US	daily rain	54.6 mm (2.1 in)	28.7 mm (1.1 in)	81 years	67 of 100 (Major)
9 May 2015	Wheatland 4N, US	daily rain	40.6 mm (1.6 in)	27.1 mm (1.1 in)	96 years	66 of 100 (Major)
9 May 2015	Scottsbluff W B Heilig Fld AP, US	monthly rain	75.2 mm (3.0 in)	13.7 mm (0.5 in)	96 years	64 of 100 (Major)
9 May 2015	Phillips, US	daily rain	53.3 mm (2.1 in)	41.1 mm (1.6 in)	57 years	63 of 100 (Major)
9 May 2015	Limon, US	daily rain	66.8 mm (2.6 in)	47.7 mm (1.9 in)	56 years	63 of 100 (Major)
9 May 2015	Bridgeport, US	daily rain	64.8 mm (2.6 in)	36.6 mm (1.4 in)	42 years	61 of 100 (Major)
9 May 2015	Sidney Muni AP, US	monthly rain	79.0 mm (3.1 in)	26.4 mm (1.0 in)	39 years	57 of 100 (Notable)
9 May 2015	Minatare Dam (Usbr), US	monthly rain	62.5 mm (2.5 in)	13.5 mm (0.5 in)	68 years	55 of 100 (Notable)
9 May 2015	Sumiha, RU	daily rain	40.9 mm (1.6 in)	35.2 mm (1.4 in)	20 years	54 of 100 (Notable)
9 May 2015	Surin, TH	daily rain	102.6 mm (4.0 in)	53.1 mm (2.1 in)	62 years	53 of 100 (Notable)
9 May 2015	Timpanogos Cave, US	daily rain	53.3 mm (2.1 in)	29.7 mm (1.2 in)	48 years	53 of 100 (Notable)
9 May 2015	Zlatoust, RU	daily rain	34.5 mm (1.4 in)	20.0 mm (0.8 in)	24 years	51 of 100 (Notable)
9 May 2015	Shadrinsk, RU	daily rain	41.4 mm (1.6 in)	25.7 mm (1.0 in)	6 years	50 of 100 (Notable)
9 May 2015	Divnoe, RU	all-time rain	99.3 mm (3.9 in)	1.1 mm (0.04 in)	70 years	50 of 100 (Notable)
9 May 2015	Mancos 1SW, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	115 years	50 of 100 (Notable)
9 May 2015	Alpine, US	daily rain	26.4 mm (1.0 in)	8.9 mm (0.35 in)	96 years	50 of 100 (Notable)
9 May 2015	Guayama 1SW, PR	daily high min	26.7 C (80.1 F)	1.1 C (2.0 F)	100 years	48 of 100 (Notable)
9 May 2015	Benton, US	daily rain	53.8 mm (2.1 in)	13.7 mm (0.5 in)	108 years	47 of 100 (Notable)

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 2015

Records set or tied on this calendar date in each year from 1793 to 2015. 2015 had 689 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 2015-05-09: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 25	496
25 to 50	26
50 to 75	15
75 to 100	3
100 to 125	1
125 to 150	0
150 to 175	1
175 to 200	3