Weather Records on 20 September 2015

439 weather records were set or tied worldwide on 20 September 2015. Highest significance: Drohobych, UA.

Key Facts for 20 September 2015

On 20 September 2015, 439 weather records were set or tied at long-record stations worldwide.
350 were record highs and 30 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 434 daily.
Drohobych set a daily record precipitation of 41.9 mm (1.6 in) on 20 September 2015.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 442 records.

Record Map

439 stations

439 station records on 20 September 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Drohobych	Ukraine	Record daily precipitation	41.9 mm (1.6 in)	60 of 100 (Major)
Hilo Intl AP 87	United States	Record daily precipitation	175.5 mm (6.9 in)	56 of 100 (Notable)
Kuressaare	Estonia	Record daily precipitation	30.8 mm (1.2 in)	51 of 100 (Notable)
Khust	Ukraine	Record daily precipitation	31.0 mm (1.2 in)	51 of 100 (Notable)
Kushiro	Japan	Record daily precipitation	119.1 mm (4.7 in)	49 of 100 (Notable)
Hamakuapoko 485	United States	Record daily precipitation	33.0 mm (1.3 in)	48 of 100 (Notable)
Voronez	Russia	Record high minimum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Clearwater	United States	Record high minimum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Camarillo AP	United States	Record high maximum temperature	33.9 C (93.0 F)	43 of 100 (Notable)
Vasilevici	Belarus	Record high minimum temperature	14.2 C (57.6 F)	42 of 100 (Notable)
Juzhno-Kurilsk	Russia	Record daily precipitation	105.2 mm (4.1 in)	42 of 100 (Notable)
Kursk	Russia	Record high minimum temperature	16.8 C (62.2 F)	42 of 100 (Notable)
Kiev	Ukraine	Record high maximum temperature	30.4 C (86.7 F)	42 of 100 (Notable)
Middleboro	United States	Record high maximum temperature	28.9 C (84.0 F)	42 of 100 (Notable)
Arhangelsk	Russia	Record high minimum temperature	12.5 C (54.5 F)	41 of 100 (Notable)
Kalispell Glacier AP	United States	Record high minimum temperature	12.8 C (55.0 F)	41 of 100 (Notable)
Coupeville 1 S	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Bogoroditskoye-Fenino	Russia	Record high maximum temperature	29.1 C (84.4 F)	40 of 100 (Notable)
San Carlos Rsvr	United States	Record low maximum temperature	21.1 C (70.0 F)	39 of 100 (Notable)
Cut Bank AP	United States	Record high minimum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Yongan	China	Record daily precipitation	56.4 mm (2.2 in)	38 of 100 (Notable)
Kem-Port	Russia	Record high minimum temperature	11.7 C (53.1 F)	38 of 100 (Notable)
Perelyub	Russia	Record high minimum temperature	17.2 C (63.0 F)	37 of 100 (Notable)
Brody	Ukraine	Record daily precipitation	34.0 mm (1.3 in)	37 of 100 (Notable)
Szeged	Hungary	Record high minimum temperature	17.0 C (62.6 F)	36 of 100 (Notable)
Tajshet	Russia	Record low minimum temperature	-6.3 C (20.7 F)	36 of 100 (Notable)
Shepetivka	Ukraine	Record high minimum temperature	16.0 C (60.8 F)	36 of 100 (Notable)
Pte de la Hague	France	Record low minimum temperature	8.9 C (48.0 F)	35 of 100 (Notable)
Kamennaja-Step	Russia	Record high maximum temperature	29.2 C (84.6 F)	35 of 100 (Notable)
Lviv	Ukraine	Record daily precipitation	37.1 mm (1.5 in)	35 of 100 (Notable)
Nashua 2 NNW	United States	Record high minimum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
N Is NAS	United States	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)
Krasnoshelye	Russia	Record high minimum temperature	9.7 C (49.5 F)	34 of 100 (Routine)
Bezenchuk	Russia	Record high minimum temperature	16.2 C (61.2 F)	34 of 100 (Routine)
Kent	United States	Record high minimum temperature	17.8 C (64.0 F)	34 of 100 (Routine)
Kostuckovichi	Belarus	Record high minimum temperature	15.9 C (60.6 F)	33 of 100 (Routine)
Ahmadabad	India	Record low maximum temperature	26.0 C (78.8 F)	32 of 100 (Routine)
Kotlas	Russia	Record high minimum temperature	12.4 C (54.3 F)	32 of 100 (Routine)
Chula Vista	United States	Record high maximum temperature	36.1 C (97.0 F)	32 of 100 (Routine)
Longview	United States	Record high minimum temperature	15.6 C (60.1 F)	32 of 100 (Routine)
Poljarnoe	Russia	Record high minimum temperature	10.7 C (51.3 F)	31 of 100 (Routine)
Saratow	Russia	Record high maximum temperature	30.1 C (86.2 F)	31 of 100 (Routine)
Monterey	United States	Record high minimum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Mohonk Lake	United States	Record high minimum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Crescent 5WSW	United States	Record daily precipitation	29.5 mm (1.2 in)	31 of 100 (Routine)
Encarnacion	Paraguay	Record daily precipitation	78.5 mm (3.1 in)	30 of 100 (Routine)
Poretskoye	Russia	Record high minimum temperature	15.5 C (59.9 F)	30 of 100 (Routine)
Sretensk	Russia	Record high minimum temperature	8.1 C (46.6 F)	30 of 100 (Routine)
Bolsoy Santar	Russia	Record high minimum temperature	10.8 C (51.4 F)	30 of 100 (Routine)
Nattavaara_A	Sweden	Record high minimum temperature	8.2 C (46.8 F)	30 of 100 (Routine)
Reno AP	United States	Record high maximum temperature	34.4 C (93.9 F)	30 of 100 (Routine)
Imperial Beach Ream Fld NAS	United States	Record high maximum temperature	32.8 C (91.0 F)	30 of 100 (Routine)
Veraval	India	Record low maximum temperature	27.8 C (82.0 F)	29 of 100 (Routine)
Temir	Kazakhstan	Record high minimum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
Cluj Napoca	Romania	Record high minimum temperature	15.5 C (59.9 F)	29 of 100 (Routine)
Woodland	United States	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Sitka AP	United States	Record low maximum temperature	9.4 C (48.9 F)	29 of 100 (Routine)
Penza	Russia	Record high minimum temperature	15.3 C (59.5 F)	28 of 100 (Routine)
Newton Exp STN	United States	Record high maximum temperature	37.2 C (99.0 F)	28 of 100 (Routine)
Paauilo 221	United States	Record daily precipitation	42.2 mm (1.7 in)	28 of 100 (Routine)

Counts by Type and Timescale

439 records

Records set or tied on 20 September 2015 by type: Highest daily maximum 132, Lowest daily maximum 12, Highest daily minimum 218, Lowest daily minimum 18, Heaviest daily rainfall 59.

Records on 20 September 2015 by type
Record type	Records
Highest daily maximum	132
Lowest daily maximum	12
Highest daily minimum	218
Lowest daily minimum	18
Heaviest daily rainfall	59
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 September 2015 by timescale: all-time 0, monthly 5, daily 434.

How Much Records Were Beaten By

368 broken records

Margins by which the 368 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 122.4. Ties are not counted.

Top 20 by Significance

20 September 2015

Top 20 records on 20 September 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 2015	Drohobych, UA	daily rain	41.9 mm (1.6 in)	25.8 mm (1.0 in)	52 years	60 of 100 (Major)
20 September 2015	Hilo Intl AP 87, US	daily rain	175.5 mm (6.9 in)	122.4 mm (4.8 in)	34 years	56 of 100 (Notable)
20 September 2015	Kuressaare, EE	daily rain	30.8 mm (1.2 in)	13.7 mm (0.5 in)	66 years	51 of 100 (Notable)
20 September 2015	Khust, UA	daily rain	31.0 mm (1.2 in)	21.3 mm (0.8 in)	62 years	51 of 100 (Notable)
20 September 2015	Kushiro, JP	daily rain	119.1 mm (4.7 in)	68.0 mm (2.7 in)	24 years	49 of 100 (Notable)
20 September 2015	Hamakuapoko 485, US	daily rain	33.0 mm (1.3 in)	15.0 mm (0.6 in)	44 years	48 of 100 (Notable)
20 September 2015	Voronez, RU	daily high min	17.8 C (64.0 F)	2.5 C (4.5 F)	96 years	44 of 100 (Notable)
20 September 2015	Clearwater, US	daily high min	15.6 C (60.1 F)	1.7 C (3.1 F)	116 years	44 of 100 (Notable)
20 September 2015	Camarillo AP, US	daily high max	33.9 C (93.0 F)	6.7 C (12.1 F)	56 years	43 of 100 (Notable)
20 September 2015	Vasilevici, BY	daily high min	14.2 C (57.6 F)	1.3 C (2.3 F)	97 years	42 of 100 (Notable)
20 September 2015	Juzhno-Kurilsk, RU	daily rain	105.2 mm (4.1 in)	54.7 mm (2.2 in)	20 years	42 of 100 (Notable)
20 September 2015	Kursk, RU	daily high min	16.8 C (62.2 F)	0.8 C (1.4 F)	101 years	42 of 100 (Notable)
20 September 2015	Kiev, UA	daily high max	30.4 C (86.7 F)	1.2 C (2.2 F)	101 years	42 of 100 (Notable)
20 September 2015	Middleboro, US	daily high max	28.9 C (84.0 F)	1.1 C (2.0 F)	119 years	42 of 100 (Notable)
20 September 2015	Arhangelsk, RU	daily high min	12.5 C (54.5 F)	0.5 C (0.9 F)	115 years	41 of 100 (Notable)
20 September 2015	Kalispell Glacier AP, US	daily high min	12.8 C (55.0 F)	0.6 C (1.1 F)	116 years	41 of 100 (Notable)
20 September 2015	Coupeville 1 S, US	daily high min	15.6 C (60.1 F)	2.3 C (4.1 F)	76 years	41 of 100 (Notable)
20 September 2015	Bogoroditskoye-Fenino, RU	daily high max	29.1 C (84.4 F)	0.3 C (0.5 F)	101 years	40 of 100 (Notable)
20 September 2015	San Carlos Rsvr, US	daily low max	21.1 C (70.0 F)	5.6 C (10.1 F)	49 years	39 of 100 (Notable)
20 September 2015	Cut Bank AP, US	daily high min	13.9 C (57.0 F)	2.8 C (5.0 F)	76 years	39 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 2015

Records set or tied on this calendar date in each year from 1812 to 2015. 2015 had 439 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 2015-09-20: 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 20	359
20 to 40	6
40 to 60	1
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	1