Weather Records on 16 August 2009

1,128 weather records were set or tied worldwide on 16 August 2009. Highest significance: Greeley, US.

Key Facts for 16 August 2009

On 16 August 2009, 1,128 weather records were set or tied at long-record stations worldwide.
661 were record highs and 322 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 56 monthly and 1,070 daily.
Greeley set a daily record precipitation of 99.3 mm (3.9 in) on 16 August 2009.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 462 records.

Record Map

1,128 stations

1,128 station records on 16 August 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 16 August 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Greeley	United States	Record daily precipitation	99.3 mm (3.9 in)	69 of 100 (Major)
Armagh	United Kingdom	Record daily precipitation	50.0 mm (2.0 in)	68 of 100 (Major)
Elk Mtn	United States	Record daily precipitation	46.5 mm (1.8 in)	65 of 100 (Major)
Gulkana AP	United States	Record daily precipitation	31.0 mm (1.2 in)	65 of 100 (Major)
Chambers	United States	Record daily precipitation	71.1 mm (2.8 in)	58 of 100 (Notable)
Gallatin 1W	United States	Record daily precipitation	77.5 mm (3.1 in)	54 of 100 (Notable)
Cordova AP	United States	Record daily precipitation	102.9 mm (4.1 in)	53 of 100 (Notable)
Tenayuca	Mexico	Record high maximum temperature	36.7 C (98.1 F)	52 of 100 (Notable)
Ft Pierre 17 WSW	United States	Record daily precipitation	45.7 mm (1.8 in)	49 of 100 (Notable)
Highmore 23 N	United States	Record daily precipitation	66.0 mm (2.6 in)	49 of 100 (Notable)
Lysebotn	Norway	Record daily precipitation	51.0 mm (2.0 in)	48 of 100 (Notable)
Trinidad	United States	Record low minimum temperature	5.6 C (42.1 F)	47 of 100 (Notable)
Neligh	United States	Record daily precipitation	73.7 mm (2.9 in)	47 of 100 (Notable)
Ely AP	United States	Record low minimum temperature	-1.1 C (30.0 F)	46 of 100 (Notable)
Chadron 3SW	United States	Record daily precipitation	36.1 mm (1.4 in)	45 of 100 (Notable)
Yakutat AP	United States	Record daily precipitation	122.2 mm (4.8 in)	45 of 100 (Notable)
Roscoe	United States	Record daily precipitation	32.0 mm (1.3 in)	44 of 100 (Notable)
Thermopolis	United States	Record low maximum temperature	18.9 C (66.0 F)	44 of 100 (Notable)
Worland	United States	Record low maximum temperature	16.7 C (62.1 F)	44 of 100 (Notable)
Ramos Arizpe (Smn)	Mexico	Record high maximum temperature	38.9 C (102.0 F)	43 of 100 (Notable)
Harrison	United States	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Columbia 8 N	United States	Record daily precipitation	73.2 mm (2.9 in)	43 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record low minimum temperature	1.7 C (35.1 F)	43 of 100 (Notable)
Payette	United States	Record low maximum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Haugan 1 W	United States	Record low maximum temperature	12.2 C (54.0 F)	42 of 100 (Notable)
Buffalo	United States	Record low maximum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Cheyenne Wells 2NE	United States	Record low minimum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Anaconda	United States	Record low maximum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Great Falls 16St	United States	Record low maximum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Ravenna	United States	Record daily precipitation	45.7 mm (1.8 in)	41 of 100 (Notable)
Nancy-Ochey	France	Record daily precipitation	37.8 mm (1.5 in)	40 of 100 (Notable)
Appling 2 NW	United States	Record daily precipitation	78.7 mm (3.1 in)	40 of 100 (Notable)
Creighton	United States	Record daily precipitation	58.2 mm (2.3 in)	40 of 100 (Notable)
South Pass City	United States	Record low maximum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Biskra	Algeria	Record high minimum temperature	33.5 C (92.3 F)	39 of 100 (Notable)
Hazlehurst	United States	Record low maximum temperature	28.9 C (84.0 F)	39 of 100 (Notable)
Allerton	United States	Record daily precipitation	42.4 mm (1.7 in)	39 of 100 (Notable)
Pipestone	United States	Record daily precipitation	47.0 mm (1.9 in)	39 of 100 (Notable)
Ellsworth 1E	United States	Record daily precipitation	76.2 mm (3.0 in)	39 of 100 (Notable)
Marree Comparison	Australia	Record high minimum temperature	16.4 C (61.5 F)	38 of 100 (Notable)
Apalachicola AP	United States	Record daily precipitation	66.0 mm (2.6 in)	38 of 100 (Notable)
Arthur	United States	Record daily precipitation	35.6 mm (1.4 in)	38 of 100 (Notable)
Paxson	United States	Record daily precipitation	29.2 mm (1.1 in)	38 of 100 (Notable)
Ft Morgan	United States	Record low minimum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
Pathfinder Dam	United States	Record low maximum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Barrett Meadows	Australia	Record daily precipitation	36.8 mm (1.4 in)	36 of 100 (Notable)
Ajojucar	Mexico	Record high maximum temperature	35.0 C (95.0 F)	36 of 100 (Notable)
San Diego de Alejandria	Mexico	Record high minimum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Tortosa - Observatorio del Ebr	Spain	Record high maximum temperature	37.0 C (98.6 F)	36 of 100 (Notable)
Driggs	United States	Record low maximum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Warroad	United States	Record daily precipitation	72.1 mm (2.8 in)	36 of 100 (Notable)
Orovada 3 W	United States	Record low minimum temperature	1.7 C (35.1 F)	36 of 100 (Notable)
Addison	United States	Record high minimum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
Crater Lake Nps HQ	United States	Record low minimum temperature	-1.1 C (30.0 F)	36 of 100 (Notable)
Imperial Beach Ream Fld NAS	United States	Record low minimum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
El Palote	Mexico	Record high maximum temperature	35.6 C (96.1 F)	35 of 100 (Notable)
Meeker	United States	Record low minimum temperature	-0.6 C (30.9 F)	35 of 100 (Notable)
Mayville	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Akron Washington Co AP	United States	Record low minimum temperature	7.8 C (46.0 F)	35 of 100 (Notable)
Haines AP	United States	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)

Counts by Type and Timescale

1,128 records

Records set or tied on 16 August 2009 by type: Highest daily maximum 441, Lowest daily maximum 128, Highest daily minimum 220, Lowest daily minimum 194, Heaviest daily rainfall 145.

Records on 16 August 2009 by type
Record type	Records
Highest daily maximum	441
Lowest daily maximum	128
Highest daily minimum	220
Lowest daily minimum	194
Heaviest daily rainfall	145
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 16 August 2009 by timescale: all-time 2, monthly 56, daily 1,070.

How Much Records Were Beaten By

776 broken records

Margins by which the 776 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 57.4. Ties are not counted.

Top 20 by Significance

16 August 2009

Top 20 records on 16 August 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 August 2009	Greeley, US	daily rain	99.3 mm (3.9 in)	43.2 mm (1.7 in)	99 years	69 of 100 (Major)
16 August 2009	Armagh, GB	daily rain	50.0 mm (2.0 in)	16.7 mm (0.7 in)	148 years	68 of 100 (Major)
16 August 2009	Elk Mtn, US	monthly rain	46.5 mm (1.8 in)	20.8 mm (0.8 in)	31 years	65 of 100 (Major)
16 August 2009	Gulkana AP, US	daily rain	31.0 mm (1.2 in)	16.5 mm (0.6 in)	60 years	65 of 100 (Major)
16 August 2009	Chambers, US	daily rain	71.1 mm (2.8 in)	49.5 mm (1.9 in)	32 years	58 of 100 (Notable)
16 August 2009	Gallatin 1W, US	daily rain	77.5 mm (3.1 in)	24.2 mm (1.0 in)	115 years	54 of 100 (Notable)
16 August 2009	Cordova AP, US	daily rain	102.9 mm (4.1 in)	39.7 mm (1.6 in)	76 years	53 of 100 (Notable)
16 August 2009	Tenayuca, MX	monthly high max	36.7 C (98.1 F)	6.1 C (11.0 F)	26 years	52 of 100 (Notable)
16 August 2009	Ft Pierre 17 WSW, US	daily rain	45.7 mm (1.8 in)	34.3 mm (1.4 in)	32 years	49 of 100 (Notable)
16 August 2009	Highmore 23 N, US	daily rain	66.0 mm (2.6 in)	49.5 mm (1.9 in)	16 years	49 of 100 (Notable)
16 August 2009	Lysebotn, NO	daily rain	51.0 mm (2.0 in)	9.5 mm (0.37 in)	111 years	48 of 100 (Notable)
16 August 2009	Trinidad, US	daily low min	5.6 C (42.1 F)	2.2 C (4.0 F)	94 years	47 of 100 (Notable)
16 August 2009	Neligh, US	daily rain	73.7 mm (2.9 in)	42.2 mm (1.7 in)	28 years	47 of 100 (Notable)
16 August 2009	Ely AP, US	daily low min	-1.1 C (30.0 F)	2.2 C (4.0 F)	107 years	46 of 100 (Notable)
16 August 2009	Chadron 3SW, US	daily rain	36.1 mm (1.4 in)	6.6 mm (0.26 in)	94 years	45 of 100 (Notable)
16 August 2009	Yakutat AP, US	daily rain	122.2 mm (4.8 in)	34.3 mm (1.4 in)	67 years	45 of 100 (Notable)
16 August 2009	Roscoe, US	daily rain	32.0 mm (1.3 in)	23.6 mm (0.9 in)	50 years	44 of 100 (Notable)
16 August 2009	Thermopolis, US	daily low max	18.9 C (66.0 F)	3.9 C (7.0 F)	82 years	44 of 100 (Notable)
16 August 2009	Worland, US	daily low max	16.7 C (62.1 F)	4.4 C (7.9 F)	82 years	44 of 100 (Notable)
16 August 2009	Ramos Arizpe (Smn), MX	daily high max	38.9 C (102.0 F)	3.9 C (7.0 F)	79 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

1793 to 2009

Records set or tied on this calendar date in each year from 1793 to 2009. 2009 had 1,128 records.

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

Records on 08-16 in each year
Year	Records
1793	1
1802	2
1811	1
1827	1
1833	1
1835	1
1838	1
1841	1
1844	2
1850	1
1856	1
1861	2
1862	1
1863	1
1868	2
1869	1
1871	1
1873	1
1875	2
1876	5
1878	1
1879	3
1880	2
1882	2
1883	2
1885	4
1886	1
1887	2
1888	5
1890	5
1891	2
1893	6
1894	1
1895	4
1896	5
1897	4
1898	6
1899	2
1900	3
1901	7
1902	5
1903	12
1904	9
1905	9
1906	11
1907	20
1908	31
1909	25
1910	14
1911	16
1912	30
1913	88
1914	10
1915	32
1916	147
1917	27
1918	72
1919	13
1920	144
1921	42
1922	148
1923	135
1924	139
1925	92
1926	165
1927	314
1928	207
1929	509
1930	158
1931	336
1932	348
1933	260
1934	504
1935	496
1936	728
1937	818
1938	700
1939	340
1940	287
1941	371
1942	447
1943	579
1944	467
1945	370
1946	313
1947	477
1948	342
1949	345
1950	305
1951	423
1952	552
1953	558
1954	648
1955	558
1956	413
1957	402
1958	1,013
1959	354
1960	518
1961	866
1962	423
1963	897
1964	831
1965	565
1966	433
1967	829
1968	824
1969	684
1970	386
1971	641
1972	997
1973	592
1974	689
1975	766
1976	1,153
1977	831
1978	835
1979	1,698
1980	855
1981	766
1982	516
1983	1,251
1984	662
1985	1,063
1986	811
1987	1,120
1988	1,594
1989	730
1990	702
1991	601
1992	2,027
1993	820
1994	1,075
1995	1,542
1996	678
1997	1,284
1998	865
1999	697
2000	873
2001	1,136
2002	1,258
2003	1,220
2004	1,239
2005	813
2006	894
2007	1,442
2008	1,183
2009	1,128
2010	1,239
2011	896
2012	670
2013	770
2014	640
2015	841
2016	786
2017	672
2018	412
2019	430
2020	1,382
2021	825
2022	1,145
2023	1,354
2024	765
2025	661
2026	661

Download the Data

Data for records on 2009-08-16: 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 10	726
10 to 20	23
20 to 30	13
30 to 40	7
40 to 50	6
50 to 60	1