Weather Records on 20 September 2007

645 weather records were set or tied worldwide on 20 September 2007. Highest significance: Little Falls 2NNE, US.

Key Facts for 20 September 2007

On 20 September 2007, 645 weather records were set or tied at long-record stations worldwide.
294 were record highs and 220 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 21 monthly and 624 daily.
Little Falls 2NNE set a daily record precipitation of 88.9 mm (3.5 in) on 20 September 2007.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 441 records.

Record Map

645 stations

645 station records on 20 September 2007 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 2007: highest significance records shown on the map
Station	Country	Type	Value	Significance
Little Falls 2NNE	United States	Record daily precipitation	88.9 mm (3.5 in)	76 of 100 (Major)
Glenwood 2WNW	United States	Record daily precipitation	87.1 mm (3.4 in)	63 of 100 (Major)
Webster	United States	Record daily precipitation	103.1 mm (4.1 in)	60 of 100 (Major)
Vajda-Guba	Russia	Record daily precipitation	33.7 mm (1.3 in)	55 of 100 (Notable)
Milan 1NW	United States	Record daily precipitation	89.7 mm (3.5 in)	55 of 100 (Notable)
Tashkent	Uzbekistan	Record low maximum temperature	11.5 C (52.7 F)	53 of 100 (Notable)
Morris W Cntrl Rsch & Outreach	United States	Record daily precipitation	78.5 mm (3.1 in)	52 of 100 (Notable)
Calera	Mexico	Record high maximum temperature	35.0 C (95.0 F)	49 of 100 (Notable)
Raymond 3 NE	United States	Record daily precipitation	40.1 mm (1.6 in)	47 of 100 (Notable)
Summit 1 W	United States	Record daily precipitation	102.1 mm (4.0 in)	47 of 100 (Notable)
Berkeley	United States	Record low minimum temperature	7.8 C (46.0 F)	46 of 100 (Notable)
Dayton 1 WSW	United States	Record low minimum temperature	-4.4 C (24.1 F)	46 of 100 (Notable)
Mayaguez City	Puerto Rico [United States]	Record high minimum temperature	23.9 C (75.0 F)	44 of 100 (Notable)
Port Alsworth	United States	Record daily precipitation	48.8 mm (1.9 in)	44 of 100 (Notable)
Calera	Mexico	Record high minimum temperature	20.0 C (68.0 F)	43 of 100 (Notable)
Lake Solano	United States	Record daily precipitation	31.2 mm (1.2 in)	43 of 100 (Notable)
Oroville	United States	Record daily precipitation	48.3 mm (1.9 in)	42 of 100 (Notable)
Linjiang	China	Record daily precipitation	59.7 mm (2.4 in)	41 of 100 (Notable)
Browns Valley	United States	Record daily precipitation	76.2 mm (3.0 in)	41 of 100 (Notable)
Hillsboro	United States	Record high minimum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Daytona Beach	United States	Record low maximum temperature	24.4 C (75.9 F)	40 of 100 (Notable)
Pogranichnyj	Russia	Record high minimum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
Cornudas Svc STN	United States	Record daily precipitation	29.2 mm (1.1 in)	38 of 100 (Notable)
Cuetzalan del Progreso	Mexico	Record high maximum temperature	38.9 C (102.0 F)	36 of 100 (Notable)
Riverside Fire STN 3	United States	Record low maximum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Crescent City	United States	Record low maximum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
Daytona Beach	United States	Record daily precipitation	82.6 mm (3.3 in)	36 of 100 (Notable)
Manuel Avila Camacho	Mexico	Record low minimum temperature	12.2 C (54.0 F)	35 of 100 (Notable)
Ganyu	China	Record daily precipitation	124.3 mm (4.9 in)	34 of 100 (Routine)
El Derrame	Mexico	Record low minimum temperature	5.0 C (41.0 F)	34 of 100 (Routine)
Kern River Ph 3	United States	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Dayton 1 WSW	United States	Record low maximum temperature	12.8 C (55.0 F)	34 of 100 (Routine)
Chiconautla	Mexico	Record high minimum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Mosquero 1 NE	United States	Record high minimum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Tamdy	Uzbekistan	Record low maximum temperature	14.1 C (57.4 F)	33 of 100 (Routine)
Bely Island	Russia	Record high minimum temperature	4.6 C (40.3 F)	32 of 100 (Routine)
Valley	United Kingdom	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Minneapolis-St Paul Intl AP	United States	Record daily precipitation	32.0 mm (1.3 in)	32 of 100 (Routine)
Lijing	China	Record low minimum temperature	5.4 C (41.7 F)	31 of 100 (Routine)
Mae Sariang	Thailand	Record daily precipitation	53.6 mm (2.1 in)	31 of 100 (Routine)
Ft Jones Rs	United States	Record low maximum temperature	13.9 C (57.0 F)	31 of 100 (Routine)
Palmdale	United States	Record low maximum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Key West NAS	United States	Record high maximum temperature	33.3 C (91.9 F)	31 of 100 (Routine)
Chengshantou	China	Record daily precipitation	72.1 mm (2.8 in)	30 of 100 (Routine)
Hachinohe	Japan	Record high maximum temperature	31.6 C (88.9 F)	30 of 100 (Routine)
Quito	Mexico	Record low minimum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
New Plymouth AWS	New Zealand	Record high maximum temperature	20.9 C (69.6 F)	30 of 100 (Routine)
Maliye_Karmakuly	Russia	Record high minimum temperature	7.8 C (46.0 F)	30 of 100 (Routine)
Martin	United States	Record high minimum temperature	17.8 C (64.0 F)	30 of 100 (Routine)
Moab	United States	Record high minimum temperature	20.6 C (69.1 F)	30 of 100 (Routine)
Kailua 446	United States	Record low minimum temperature	14.4 C (57.9 F)	30 of 100 (Routine)
Bengbu	China	Record daily precipitation	31.6 mm (1.2 in)	29 of 100 (Routine)
Fukaura	Japan	Record high minimum temperature	22.5 C (72.5 F)	29 of 100 (Routine)
Pasadena	United States	Record low maximum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Palmdale AP	United States	Record low maximum temperature	19.4 C (66.9 F)	29 of 100 (Routine)
Cimbaj	Uzbekistan	Record low maximum temperature	7.7 C (45.9 F)	29 of 100 (Routine)
Dandong	China	Record daily precipitation	54.8 mm (2.2 in)	28 of 100 (Routine)
Ulleungdo	Korea, South	Record high maximum temperature	27.7 C (81.9 F)	28 of 100 (Routine)
Murmansk	Russia	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record daily precipitation	42.2 mm (1.7 in)	28 of 100 (Routine)

Counts by Type and Timescale

645 records

Records set or tied on 20 September 2007 by type: Highest daily maximum 143, Lowest daily maximum 114, Highest daily minimum 151, Lowest daily minimum 106, Heaviest daily rainfall 129, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 20 September 2007 by type
Record type	Records
Highest daily maximum	143
Lowest daily maximum	114
Highest daily minimum	151
Lowest daily minimum	106
Heaviest daily rainfall	129
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 20 September 2007 by timescale: all-time 0, monthly 21, daily 624.

How Much Records Were Beaten By

490 broken records

Margins by which the 490 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 69.8. Ties are not counted.

Top 20 by Significance

20 September 2007

Top 20 records on 20 September 2007 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 2007	Little Falls 2NNE, US	daily rain	88.9 mm (3.5 in)	60.2 mm (2.4 in)	86 years	76 of 100 (Major)
20 September 2007	Glenwood 2WNW, US	daily rain	87.1 mm (3.4 in)	69.8 mm (2.7 in)	45 years	63 of 100 (Major)
20 September 2007	Webster, US	monthly rain	103.1 mm (4.1 in)	33.2 mm (1.3 in)	17 years	60 of 100 (Major)
20 September 2007	Vajda-Guba, RU	daily rain	33.7 mm (1.3 in)	20.7 mm (0.8 in)	17 years	55 of 100 (Notable)
20 September 2007	Milan 1NW, US	monthly rain	89.7 mm (3.5 in)	5.4 mm (0.21 in)	106 years	55 of 100 (Notable)
20 September 2007	Tashkent, UZ	daily low max	11.5 C (52.7 F)	5.7 C (10.3 F)	122 years	53 of 100 (Notable)
20 September 2007	Morris W Cntrl Rsch & Outreach, US	monthly rain	78.5 mm (3.1 in)	2.3 mm (0.09 in)	110 years	52 of 100 (Notable)
20 September 2007	Calera, MX	daily high max	35.0 C (95.0 F)	6.1 C (11.0 F)	44 years	49 of 100 (Notable)
20 September 2007	Raymond 3 NE, US	daily rain	40.1 mm (1.6 in)	22.1 mm (0.9 in)	56 years	47 of 100 (Notable)
20 September 2007	Summit 1 W, US	monthly rain	102.1 mm (4.0 in)	27.2 mm (1.1 in)	17 years	47 of 100 (Notable)
20 September 2007	Berkeley, US	daily low min	7.8 C (46.0 F)	1.1 C (2.0 F)	101 years	46 of 100 (Notable)
20 September 2007	Dayton 1 WSW, US	daily low min	-4.4 C (24.1 F)	2.2 C (4.0 F)	111 years	46 of 100 (Notable)
20 September 2007	Mayaguez City, PR	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	105 years	44 of 100 (Notable)
20 September 2007	Port Alsworth, US	daily rain	48.8 mm (1.9 in)	20.9 mm (0.8 in)	30 years	44 of 100 (Notable)
20 September 2007	Calera, MX	daily high min	20.0 C (68.0 F)	5.0 C (9.0 F)	44 years	43 of 100 (Notable)
20 September 2007	Lake Solano, US	daily rain	31.2 mm (1.2 in)	28.2 mm (1.1 in)	2 years	43 of 100 (Notable)
20 September 2007	Oroville, US	daily rain	48.3 mm (1.9 in)	35.6 mm (1.4 in)	2 years	42 of 100 (Notable)
20 September 2007	Linjiang, CN	daily rain	59.7 mm (2.4 in)	30.6 mm (1.2 in)	20 years	41 of 100 (Notable)
20 September 2007	Browns Valley, US	daily rain	76.2 mm (3.0 in)	38.6 mm (1.5 in)	13 years	41 of 100 (Notable)
20 September 2007	Hillsboro, US	daily high min	16.7 C (62.1 F)	0.6 C (1.1 F)	111 years	41 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

1812 to 2007

Records set or tied on this calendar date in each year from 1812 to 2007. 2007 had 645 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 2007-09-20: 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	451
10 to 20	17
20 to 30	13
30 to 40	6
40 to 50	0
50 to 60	0
60 to 70	3