Weather Records on 27 July 2009

829 weather records were set or tied worldwide on 27 July 2009. Highest significance: Velikie Luki, RU.

Key Facts for 27 July 2009

On 27 July 2009, 829 weather records were set or tied at long-record stations worldwide.
496 were record highs and 174 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 16 monthly and 806 daily.
Velikie Luki set a daily record precipitation of 56.1 mm (2.2 in) on 27 July 2009.
Across 162 earlier years (1805 to 2026) the same calendar date averaged 451 records.

Record Map

829 stations

829 station records on 27 July 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 July 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Velikie Luki	Russia	Record daily precipitation	56.1 mm (2.2 in)	73 of 100 (Major)
Highwood 7 NE	United States	Record daily precipitation	61.7 mm (2.4 in)	64 of 100 (Major)
Great Falls 16St	United States	Record daily precipitation	32.3 mm (1.3 in)	63 of 100 (Major)
Elkhart	United States	Record daily precipitation	48.3 mm (1.9 in)	56 of 100 (Notable)
Haugan 1 W	United States	Record daily precipitation	29.0 mm (1.1 in)	55 of 100 (Notable)
Ostaskov	Russia	Record daily precipitation	49.0 mm (1.9 in)	54 of 100 (Notable)
Hungry Horse Dam	United States	Record daily precipitation	34.3 mm (1.4 in)	54 of 100 (Notable)
Vitebsk	Belarus	Record daily precipitation	50.0 mm (2.0 in)	52 of 100 (Notable)
Hartley 4 ESE	United States	Record daily precipitation	61.7 mm (2.4 in)	51 of 100 (Notable)
Ovando 9 SSE	United States	Record daily precipitation	27.9 mm (1.1 in)	49 of 100 (Notable)
Gomel	Belarus	Record daily precipitation	66.0 mm (2.6 in)	48 of 100 (Notable)
Yap Island WSO AP	Federated States of Micronesia	Record daily precipitation	209.8 mm (8.3 in)	47 of 100 (Notable)
San Diego Curupatzeo	Mexico	Record high maximum temperature	40.0 C (104.0 F)	46 of 100 (Notable)
Acajete	Mexico	Record daily precipitation	41.9 mm (1.6 in)	46 of 100 (Notable)
Williamsport	United States	Record daily precipitation	31.5 mm (1.2 in)	46 of 100 (Notable)
Zelenchukskaja	Russia	Record daily precipitation	48.0 mm (1.9 in)	45 of 100 (Notable)
Kosciusko	United States	Record low maximum temperature	25.6 C (78.1 F)	44 of 100 (Notable)
Gorki	Belarus	Record daily precipitation	31.0 mm (1.2 in)	43 of 100 (Notable)
Higgins	United States	Record daily precipitation	27.7 mm (1.1 in)	43 of 100 (Notable)
Olga 2 SE	United States	Record high minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Salem AP (McNary Field)	United States	Record high minimum temperature	21.1 C (70.0 F)	43 of 100 (Notable)
Newport	United States	Record low maximum temperature	12.2 C (54.0 F)	43 of 100 (Notable)
Gyshgy	Turkmenistan	Record high maximum temperature	42.0 C (107.6 F)	42 of 100 (Notable)
Loma	United States	Record daily precipitation	27.9 mm (1.1 in)	42 of 100 (Notable)
Perryton	United States	Record daily precipitation	56.4 mm (2.2 in)	42 of 100 (Notable)
Olga 2 SE	United States	Record high maximum temperature	30.0 C (86.0 F)	42 of 100 (Notable)
Tepelmeme de Morelos	Mexico	Record high maximum temperature	32.8 C (91.0 F)	41 of 100 (Notable)
Charlevoix	United States	Record low maximum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Albemarle	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Wallops Is Nasa Test Facility	United States	Record daily precipitation	150.1 mm (5.9 in)	41 of 100 (Notable)
Huntingdon	United States	Record low minimum temperature	5.0 C (41.0 F)	40 of 100 (Notable)
Fort Huachuca	United States	Record high minimum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Helena AP ASOS	United States	Record daily precipitation	28.4 mm (1.1 in)	40 of 100 (Notable)
Rapelje	United States	Record low maximum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Cole Creek	United States	Record daily precipitation	40.6 mm (1.6 in)	39 of 100 (Notable)
Presa la Calera	Mexico	Record low minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Toropec	Russia	Record daily precipitation	51.3 mm (2.0 in)	38 of 100 (Notable)
Fowler 1 SE	United States	Record daily precipitation	38.6 mm (1.5 in)	38 of 100 (Notable)
Rogers Pass 9 NNE	United States	Record daily precipitation	49.3 mm (1.9 in)	38 of 100 (Notable)
Senno	Belarus	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Kuusamo Toranginaho	Finland	Record daily precipitation	44.0 mm (1.7 in)	37 of 100 (Notable)
Valier	United States	Record daily precipitation	26.7 mm (1.1 in)	37 of 100 (Notable)
Orsha	Belarus	Record daily precipitation	37.1 mm (1.5 in)	36 of 100 (Notable)
Zhlobin	Belarus	Record daily precipitation	63.0 mm (2.5 in)	36 of 100 (Notable)
Ajiro	Japan	Record daily precipitation	70.1 mm (2.8 in)	36 of 100 (Notable)
San Pedro Piedra Gorda -Ciuda	Mexico	Record high maximum temperature	35.0 C (95.0 F)	36 of 100 (Notable)
Sewanee	United States	Record low maximum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
El Paso de Iritu	Mexico	Record high maximum temperature	45.0 C (113.0 F)	35 of 100 (Notable)
Culiacan (Dge)	Mexico	Record high minimum temperature	29.4 C (84.9 F)	35 of 100 (Notable)
Watersmeet	United States	Record low maximum temperature	13.3 C (55.9 F)	35 of 100 (Notable)
Grebbeshult	Sweden	Record daily precipitation	26.8 mm (1.1 in)	34 of 100 (Routine)
Ejido Reata	Mexico	Record low minimum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Gulkana AP	United States	Record high minimum temperature	14.4 C (57.9 F)	33 of 100 (Routine)
Pago Pago WSO AP	American Samoa [United States]	Record daily precipitation	74.2 mm (2.9 in)	32 of 100 (Routine)
Rossared	Sweden	Record daily precipitation	28.6 mm (1.1 in)	32 of 100 (Routine)
Notla 3 SE	United States	Record daily precipitation	41.4 mm (1.6 in)	32 of 100 (Routine)
Palmer 3 ESE	United States	Record high maximum temperature	35.0 C (95.0 F)	32 of 100 (Routine)
Presa de Guadalupe	Mexico	Record low maximum temperature	23.9 C (75.0 F)	31 of 100 (Routine)
Coahuayutla	Mexico	Record low maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Magdalena	Mexico	Record high minimum temperature	20.6 C (69.1 F)	31 of 100 (Routine)

Counts by Type and Timescale

829 records

Records set or tied on 27 July 2009 by type: Highest daily maximum 270, Lowest daily maximum 78, Highest daily minimum 226, Lowest daily minimum 96, Heaviest daily rainfall 159.

Records on 27 July 2009 by type
Record type	Records
Highest daily maximum	270
Lowest daily maximum	78
Highest daily minimum	226
Lowest daily minimum	96
Heaviest daily rainfall	159
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 July 2009 by timescale: all-time 7, monthly 16, daily 806.

How Much Records Were Beaten By

533 broken records

Margins by which the 533 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 104.4. Ties are not counted.

Top 20 by Significance

27 July 2009

Top 20 records on 27 July 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 2009	Velikie Luki, RU	daily rain	56.1 mm (2.2 in)	23.8 mm (0.9 in)	127 years	73 of 100 (Major)
27 July 2009	Highwood 7 NE, US	daily rain	61.7 mm (2.4 in)	44.4 mm (1.7 in)	60 years	64 of 100 (Major)
27 July 2009	Great Falls 16St, US	daily rain	32.3 mm (1.3 in)	15.3 mm (0.6 in)	100 years	63 of 100 (Major)
27 July 2009	Elkhart, US	daily rain	48.3 mm (1.9 in)	25.4 mm (1.0 in)	94 years	56 of 100 (Notable)
27 July 2009	Haugan 1 W, US	daily rain	29.0 mm (1.1 in)	12.7 mm (0.5 in)	68 years	55 of 100 (Notable)
27 July 2009	Ostaskov, RU	daily rain	49.0 mm (1.9 in)	27.7 mm (1.1 in)	52 years	54 of 100 (Notable)
27 July 2009	Hungry Horse Dam, US	daily rain	34.3 mm (1.4 in)	26.4 mm (1.0 in)	32 years	54 of 100 (Notable)
27 July 2009	Vitebsk, BY	daily rain	50.0 mm (2.0 in)	23.5 mm (0.9 in)	55 years	52 of 100 (Notable)
27 July 2009	Hartley 4 ESE, US	daily rain	61.7 mm (2.4 in)	32.2 mm (1.3 in)	60 years	51 of 100 (Notable)
27 July 2009	Ovando 9 SSE, US	daily rain	27.9 mm (1.1 in)	23.8 mm (0.9 in)	20 years	49 of 100 (Notable)
27 July 2009	Gomel, BY	daily rain	66.0 mm (2.6 in)	43.2 mm (1.7 in)	10 years	48 of 100 (Notable)
27 July 2009	Yap Island WSO AP, FM	daily rain	209.8 mm (8.3 in)	104.4 mm (4.1 in)	7 years	47 of 100 (Notable)
27 July 2009	San Diego Curupatzeo, MX	daily high max	40.0 C (104.0 F)	3.3 C (5.9 F)	84 years	46 of 100 (Notable)
27 July 2009	Acajete, MX	daily rain	41.9 mm (1.6 in)	23.9 mm (0.9 in)	64 years	46 of 100 (Notable)
27 July 2009	Williamsport, US	daily rain	31.5 mm (1.2 in)	24.4 mm (1.0 in)	67 years	46 of 100 (Notable)
27 July 2009	Zelenchukskaja, RU	daily rain	48.0 mm (1.9 in)	22.8 mm (0.9 in)	48 years	45 of 100 (Notable)
27 July 2009	Kosciusko, US	daily low max	25.6 C (78.1 F)	1.1 C (2.0 F)	108 years	44 of 100 (Notable)
27 July 2009	Gorki, BY	daily rain	31.0 mm (1.2 in)	9.5 mm (0.37 in)	72 years	43 of 100 (Notable)
27 July 2009	Higgins, US	daily rain	27.7 mm (1.1 in)	20.1 mm (0.8 in)	60 years	43 of 100 (Notable)
27 July 2009	Olga 2 SE, US	daily high min	15.6 C (60.1 F)	0.6 C (1.1 F)	107 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

1805 to 2009

Records set or tied on this calendar date in each year from 1805 to 2009. 2009 had 829 records.

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

Records on 07-27 in each year
Year	Records
1805	1
1815	2
1820	1
1832	2
1847	1
1852	1
1856	2
1857	2
1862	1
1863	1
1867	2
1868	4
1870	1
1871	1
1872	2
1873	1
1875	1
1876	2
1877	2
1881	2
1882	1
1883	5
1884	2
1886	1
1887	3
1888	3
1889	4
1890	5
1891	1
1893	2
1894	1
1895	2
1896	1
1897	5
1898	2
1899	4
1900	5
1901	11
1902	4
1903	13
1904	13
1905	7
1906	16
1907	14
1908	17
1909	18
1910	7
1911	51
1912	89
1913	43
1914	44
1915	31
1916	143
1917	46
1918	103
1919	86
1920	67
1921	123
1922	95
1923	142
1924	71
1925	234
1926	131
1927	69
1928	222
1929	177
1930	786
1931	429
1932	172
1933	414
1934	471
1935	289
1936	971
1937	407
1938	287
1939	284
1940	632
1941	457
1942	258
1943	326
1944	398
1945	337
1946	680
1947	389
1948	485
1949	418
1950	797
1951	207
1952	476
1953	248
1954	294
1955	521
1956	325
1957	372
1958	491
1959	395
1960	385
1961	277
1962	1,009
1963	584
1964	335
1965	434
1966	594
1967	559
1968	391
1969	588
1970	379
1971	1,083
1972	790
1973	751
1974	403
1975	588
1976	426
1977	878
1978	583
1979	749
1980	760
1981	1,233
1982	584
1983	1,455
1984	1,613
1985	571
1986	836
1987	1,108
1988	936
1989	1,103
1990	846
1991	763
1992	791
1993	1,317
1994	1,851
1995	1,192
1996	950
1997	1,173
1998	1,363
1999	820
2000	1,019
2001	1,265
2002	816
2003	1,064
2004	1,552
2005	1,743
2006	1,321
2007	904
2008	784
2009	829
2010	1,330
2011	1,007
2012	823
2013	1,110
2014	591
2015	744
2016	564
2017	460
2018	737
2019	597
2020	842
2021	1,131
2022	855
2023	826
2024	646
2025	853
2026	1,170

Download the Data

Data for records on 2009-07-27: 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	505
20 to 40	23
40 to 60	4
60 to 80	0
80 to 100	0
100 to 120	1