Weather Records on 4 May 2009

727 weather records were set or tied worldwide on 4 May 2009. Highest significance: Cottage Grove 2E, US.

Key Facts for 4 May 2009

On 4 May 2009, 727 weather records were set or tied at long-record stations worldwide.
363 were record highs and 103 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 20 monthly and 701 daily.
Cottage Grove 2E set a daily record precipitation of 39.9 mm (1.6 in) on 4 May 2009.
Across 163 earlier years (1795 to 2026) the same calendar date averaged 429 records.

Record Map

727 stations

727 station records on 4 May 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 May 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cottage Grove 2E	United States	Record daily precipitation	39.9 mm (1.6 in)	66 of 100 (Major)
Emory	United States	Record daily precipitation	137.4 mm (5.4 in)	58 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record daily precipitation	74.9 mm (2.9 in)	54 of 100 (Notable)
Leakesville 6 WSW	United States	Record daily precipitation	251.2 mm (9.9 in)	53 of 100 (Notable)
Warren 2 ENE	United States	Record daily precipitation	150.4 mm (5.9 in)	49 of 100 (Notable)
Saint Charles	United States	Record daily precipitation	81.3 mm (3.2 in)	48 of 100 (Notable)
Marion Forks Fish Hatchery	United States	Record daily precipitation	49.5 mm (1.9 in)	48 of 100 (Notable)
Shippensburg	United States	Record daily precipitation	47.5 mm (1.9 in)	48 of 100 (Notable)
Glenville	United States	Record daily precipitation	53.6 mm (2.1 in)	48 of 100 (Notable)
Waynesboro 2 W	United States	Record daily precipitation	104.1 mm (4.1 in)	47 of 100 (Notable)
Oneida	United States	Record daily precipitation	95.3 mm (3.8 in)	47 of 100 (Notable)
Hamlin	United States	Record daily precipitation	61.0 mm (2.4 in)	47 of 100 (Notable)
Eureka WFO Woodley Is	United States	Record daily precipitation	44.2 mm (1.7 in)	47 of 100 (Notable)
Maud	United States	Record daily precipitation	126.0 mm (5.0 in)	46 of 100 (Notable)
Weaverville	United States	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
Weston	United States	Record daily precipitation	53.3 mm (2.1 in)	45 of 100 (Notable)
Anniston Metro AP	United States	Record daily precipitation	69.9 mm (2.8 in)	45 of 100 (Notable)
Sumrall	United States	Record daily precipitation	90.2 mm (3.6 in)	44 of 100 (Notable)
Fairmont	United States	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Town Bluff Dam	United States	Record daily precipitation	147.3 mm (5.8 in)	43 of 100 (Notable)
Romney 1 SW	United States	Record daily precipitation	45.7 mm (1.8 in)	43 of 100 (Notable)
Gunnedah Pool	Australia	Record low minimum temperature	-0.5 C (31.1 F)	42 of 100 (Notable)
Rison	United States	Record low maximum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Ville Platte	United States	Record daily precipitation	99.6 mm (3.9 in)	42 of 100 (Notable)
Willard 4 SW	United States	Record high minimum temperature	21.1 C (70.0 F)	42 of 100 (Notable)
Crossville Ed & Rsch STN	United States	Record daily precipitation	89.2 mm (3.5 in)	42 of 100 (Notable)
Satus Pass 2 SSW	United States	Record daily precipitation	25.9 mm (1.0 in)	42 of 100 (Notable)
Winfield Locks	United States	Record daily precipitation	45.2 mm (1.8 in)	42 of 100 (Notable)
Franklin 2 NE	United States	Record low maximum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Morgantown Muni AP	United States	Record daily precipitation	56.4 mm (2.2 in)	41 of 100 (Notable)
Pensacola Rgnl AP	United States	Record daily precipitation	73.4 mm (2.9 in)	41 of 100 (Notable)
Buckatunna 1 NE	United States	Record daily precipitation	101.6 mm (4.0 in)	40 of 100 (Notable)
Collins	United States	Record daily precipitation	68.6 mm (2.7 in)	40 of 100 (Notable)
Hohenwald	United States	Record daily precipitation	30.2 mm (1.2 in)	40 of 100 (Notable)
Burnsville Lake	United States	Record daily precipitation	44.7 mm (1.8 in)	40 of 100 (Notable)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	40.0 C (104.0 F)	39 of 100 (Notable)
Pensacola Forest Sherman NAS	United States	Record daily precipitation	59.7 mm (2.4 in)	39 of 100 (Notable)
Chatom	United States	Record daily precipitation	109.2 mm (4.3 in)	38 of 100 (Notable)
Rosepine Rsch STN	United States	Record daily precipitation	81.0 mm (3.2 in)	38 of 100 (Notable)
Penang Intl	Malaysia	Record daily precipitation	103.1 mm (4.1 in)	37 of 100 (Notable)
Hagerstown 1E	United States	Record daily precipitation	35.1 mm (1.4 in)	37 of 100 (Notable)
Hattiesburg 5SW	United States	Record daily precipitation	51.3 mm (2.0 in)	37 of 100 (Notable)
Laurel	United States	Record daily precipitation	88.6 mm (3.5 in)	37 of 100 (Notable)
Choteau	United States	Record snow depth	15.2 cm (6.0 in)	37 of 100 (Notable)
Blue Canyon Nyack AP	United States	Record daily precipitation	39.9 mm (1.6 in)	37 of 100 (Notable)
Edenton	United States	Record high minimum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Chambersburg 1 ESE	United States	Record daily precipitation	38.1 mm (1.5 in)	36 of 100 (Notable)
Mud Ridge	United States	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
Sosnovo-Ozerskoe	Russia	Record high maximum temperature	24.5 C (76.1 F)	35 of 100 (Notable)
Abbott	United States	Record daily precipitation	64.8 mm (2.6 in)	35 of 100 (Notable)
Mt Shasta	United States	Record daily precipitation	29.2 mm (1.1 in)	35 of 100 (Notable)
Richardson Gr Sp	United States	Record daily precipitation	29.7 mm (1.2 in)	35 of 100 (Notable)
Prentiss	United States	Record daily precipitation	84.8 mm (3.3 in)	34 of 100 (Routine)
Doniphan	United States	Record low maximum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Hebbronville	United States	Record high maximum temperature	43.3 C (109.9 F)	34 of 100 (Routine)
Dunlow 1 SW	United States	Record daily precipitation	52.1 mm (2.1 in)	34 of 100 (Routine)
Centreville	United States	Record daily precipitation	71.9 mm (2.8 in)	33 of 100 (Routine)
Cheraw	United States	Record high minimum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Spencer	United States	Record daily precipitation	35.6 mm (1.4 in)	33 of 100 (Routine)
Circle Hot Springs	United States	Record high maximum temperature	21.7 C (71.1 F)	33 of 100 (Routine)

Counts by Type and Timescale

727 records

Records set or tied on 4 May 2009 by type: Highest daily maximum 173, Lowest daily maximum 57, Highest daily minimum 190, Lowest daily minimum 46, Heaviest daily rainfall 256, Heaviest daily snowfall 2, Deepest snow cover 3.

Records on 4 May 2009 by type
Record type	Records
Highest daily maximum	173
Lowest daily maximum	57
Highest daily minimum	190
Lowest daily minimum	46
Heaviest daily rainfall	256
Heaviest daily snowfall	2
Deepest snow cover	3

Records on 4 May 2009 by timescale: all-time 6, monthly 20, daily 701.

How Much Records Were Beaten By

566 broken records

Margins by which the 566 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

4 May 2009

Top 20 records on 4 May 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 May 2009	Cottage Grove 2E, US	daily rain	39.9 mm (1.6 in)	19.8 mm (0.8 in)	84 years	66 of 100 (Major)
4 May 2009	Emory, US	daily rain	137.4 mm (5.4 in)	73.1 mm (2.9 in)	40 years	58 of 100 (Notable)
4 May 2009	Aibonito 1 S, PR	daily rain	74.9 mm (2.9 in)	48.2 mm (1.9 in)	50 years	54 of 100 (Notable)
4 May 2009	Leakesville 6 WSW, US	monthly rain	251.2 mm (9.9 in)	57.7 mm (2.3 in)	28 years	53 of 100 (Notable)
4 May 2009	Warren 2 ENE, US	monthly rain	150.4 mm (5.9 in)	23.1 mm (0.9 in)	56 years	49 of 100 (Notable)
4 May 2009	Saint Charles, US	daily rain	81.3 mm (3.2 in)	38.4 mm (1.5 in)	56 years	48 of 100 (Notable)
4 May 2009	Marion Forks Fish Hatchery, US	daily rain	49.5 mm (1.9 in)	24.9 mm (1.0 in)	32 years	48 of 100 (Notable)
4 May 2009	Shippensburg, US	daily rain	47.5 mm (1.9 in)	27.2 mm (1.1 in)	34 years	48 of 100 (Notable)
4 May 2009	Glenville, US	daily rain	53.6 mm (2.1 in)	26.9 mm (1.1 in)	34 years	48 of 100 (Notable)
4 May 2009	Waynesboro 2 W, US	daily rain	104.1 mm (4.1 in)	50.8 mm (2.0 in)	42 years	47 of 100 (Notable)
4 May 2009	Oneida, US	monthly rain	95.3 mm (3.8 in)	19.6 mm (0.8 in)	55 years	47 of 100 (Notable)
4 May 2009	Hamlin, US	daily rain	61.0 mm (2.4 in)	29.2 mm (1.1 in)	26 years	47 of 100 (Notable)
4 May 2009	Eureka WFO Woodley Is, US	daily rain	44.2 mm (1.7 in)	29.2 mm (1.1 in)	6 years	47 of 100 (Notable)
4 May 2009	Maud, US	monthly rain	126.0 mm (5.0 in)	23.1 mm (0.9 in)	59 years	46 of 100 (Notable)
4 May 2009	Weaverville, US	daily rain	31.5 mm (1.2 in)	11.2 mm (0.4 in)	68 years	45 of 100 (Notable)
4 May 2009	Weston, US	daily rain	53.3 mm (2.1 in)	24.9 mm (1.0 in)	34 years	45 of 100 (Notable)
4 May 2009	Anniston Metro AP, US	daily rain	69.9 mm (2.8 in)	21.6 mm (0.9 in)	67 years	45 of 100 (Notable)
4 May 2009	Sumrall, US	daily rain	90.2 mm (3.6 in)	44.0 mm (1.7 in)	56 years	44 of 100 (Notable)
4 May 2009	Fairmont, US	daily rain	33.0 mm (1.3 in)	3.8 mm (0.15 in)	104 years	44 of 100 (Notable)
4 May 2009	Town Bluff Dam, US	monthly rain	147.3 mm (5.8 in)	46.5 mm (1.8 in)	22 years	43 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

1795 to 2009

Records set or tied on this calendar date in each year from 1795 to 2009. 2009 had 727 records.

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

Records on 05-04 in each year
Year	Records
1795	1
1796	1
1820	1
1836	2
1840	1
1847	1
1850	2
1851	2
1852	1
1856	3
1858	1
1859	1
1861	2
1862	1
1864	3
1865	2
1868	3
1869	1
1870	2
1875	1
1877	2
1878	1
1879	1
1880	1
1882	1
1885	1
1886	1
1888	1
1889	4
1890	1
1892	4
1893	3
1894	6
1895	3
1896	3
1897	2
1898	2
1899	2
1900	2
1902	5
1903	8
1904	8
1905	19
1906	5
1907	37
1908	18
1909	13
1910	14
1911	37
1912	12
1913	63
1914	21
1915	75
1916	57
1917	60
1918	30
1919	69
1920	43
1921	62
1922	283
1923	82
1924	88
1925	80
1926	230
1927	112
1928	205
1929	177
1930	269
1931	169
1932	104
1933	274
1934	456
1935	518
1936	313
1937	230
1938	445
1939	295
1940	602
1941	436
1942	820
1943	358
1944	872
1945	654
1946	463
1947	649
1948	578
1949	1,130
1950	953
1951	292
1952	698
1953	389
1954	1,045
1955	471
1956	433
1957	433
1958	414
1959	613
1960	443
1961	466
1962	265
1963	313
1964	570
1965	433
1966	1,113
1967	928
1968	304
1969	377
1970	454
1971	810
1972	364
1973	313
1974	367
1975	683
1976	554
1977	736
1978	1,016
1979	1,529
1980	511
1981	667
1982	591
1983	539
1984	885
1985	821
1986	1,128
1987	1,004
1988	591
1989	743
1990	1,461
1991	1,088
1992	933
1993	791
1994	821
1995	974
1996	1,298
1997	962
1998	898
1999	1,167
2000	1,398
2001	1,345
2002	1,343
2003	1,158
2004	1,341
2005	1,152
2006	650
2007	699
2008	624
2009	727
2010	999
2011	1,023
2012	1,343
2013	1,447
2014	602
2015	622
2016	463
2017	669
2018	972
2019	574
2020	504
2021	616
2022	470
2023	681
2024	885
2025	456
2026	554

Download the Data

Data for records on 2009-05-04: 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 20	510
20 to 40	40
40 to 60	12
60 to 80	2
80 to 100	0
100 to 120	1
120 to 140	0
140 to 160	1