Weather Records on 18 September 1927

189 weather records were set or tied worldwide on 18 September 1927. Highest significance: Junsele, SE.

Key Facts for 18 September 1927

On 18 September 1927, 189 weather records were set or tied at long-record stations worldwide.
135 were record highs and 17 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 7 monthly and 181 daily.
Junsele set a monthly record daily precipitation of 44.1 mm (1.7 in) on 18 September 1927.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 423 records.

Record Map

189 stations

189 station records on 18 September 1927 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1927: highest significance records shown on the map
Station	Country	Type	Value	Significance
Junsele	Sweden	Record daily precipitation	44.1 mm (1.7 in)	50 of 100 (Notable)
Kvikkjokk-Arrenjarka	Sweden	Record daily precipitation	27.2 mm (1.1 in)	44 of 100 (Notable)
Johnstown	United States	Record daily precipitation	60.2 mm (2.4 in)	43 of 100 (Notable)
Harrisburg - Coop	United States	Record daily precipitation	63.8 mm (2.5 in)	36 of 100 (Notable)
Agassiz Cda	Canada	Record high minimum temperature	15.6 C (60.1 F)	26 of 100 (Routine)
Lebanon 3 W	United States	Record daily precipitation	49.5 mm (1.9 in)	25 of 100 (Routine)
S Bend AP	United States	Record daily precipitation	54.4 mm (2.1 in)	25 of 100 (Routine)
Beloit	United States	Record daily precipitation	56.6 mm (2.2 in)	24 of 100 (Routine)
Greensboro	United States	Record high maximum temperature	38.3 C (100.9 F)	21 of 100 (Routine)
Le Claire	United States	Record daily precipitation	56.4 mm (2.2 in)	21 of 100 (Routine)
Weissenburg	Germany	Record daily precipitation	18.2 mm (0.7 in)	20 of 100 (Routine)
Abitibi Post	Canada	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Susendal	Norway	Record daily precipitation	22.7 mm (0.9 in)	20 of 100 (Routine)
Blakely	United States	Record daily precipitation	25.1 mm (1.0 in)	20 of 100 (Routine)
Morrison	United States	Record daily precipitation	30.0 mm (1.2 in)	20 of 100 (Routine)
Aberdeen	United States	Record high maximum temperature	40.6 C (105.1 F)	20 of 100 (Routine)
Clinton #1	United States	Record daily precipitation	33.0 mm (1.3 in)	19 of 100 (Routine)
Galva	United States	Record daily precipitation	33.8 mm (1.3 in)	18 of 100 (Routine)
College STN 6 SW	United States	Record high maximum temperature	39.4 C (102.9 F)	18 of 100 (Routine)
Olga 2 SE	United States	Record high minimum temperature	15.6 C (60.1 F)	18 of 100 (Routine)
Point Pleasant	United States	Record high maximum temperature	37.2 C (99.0 F)	18 of 100 (Routine)
Coldwater St School	United States	Record daily precipitation	31.8 mm (1.3 in)	17 of 100 (Routine)
Grayling	United States	Record daily precipitation	24.9 mm (1.0 in)	17 of 100 (Routine)
Altoona Horseshoe Curv	United States	Record daily precipitation	24.4 mm (1.0 in)	17 of 100 (Routine)
Blanco	United States	Record high maximum temperature	39.4 C (102.9 F)	17 of 100 (Routine)
Tobolsk	Russia	Record high minimum temperature	11.1 C (52.0 F)	16 of 100 (Routine)
Clanton	United States	Record high maximum temperature	38.9 C (102.0 F)	16 of 100 (Routine)
Florence	United States	Record high maximum temperature	37.8 C (100.0 F)	16 of 100 (Routine)
Valley Head	United States	Record high maximum temperature	37.8 C (100.0 F)	16 of 100 (Routine)
New Iberia AP - Acadiana Rgnl	United States	Record high maximum temperature	35.0 C (95.0 F)	16 of 100 (Routine)
Bellefontaine	United States	Record high minimum temperature	22.2 C (72.0 F)	16 of 100 (Routine)
Jacksonville	United States	Record high minimum temperature	14.4 C (57.9 F)	16 of 100 (Routine)
Lakeview 2 NNW	United States	Record high minimum temperature	11.1 C (52.0 F)	16 of 100 (Routine)
State College	United States	Record daily precipitation	19.6 mm (0.8 in)	16 of 100 (Routine)
New Braunfels	United States	Record high maximum temperature	36.1 C (97.0 F)	16 of 100 (Routine)
Woodstock 2 NE	United States	Record high maximum temperature	38.9 C (102.0 F)	16 of 100 (Routine)
Olga 2 SE	United States	Record high maximum temperature	27.8 C (82.0 F)	16 of 100 (Routine)
Burketown Post Office	Australia	Record low minimum temperature	12.2 C (54.0 F)	15 of 100 (Routine)
Agassiz Cda	Canada	Record high maximum temperature	29.4 C (84.9 F)	15 of 100 (Routine)
Nurnberg	Germany	Record low maximum temperature	11.4 C (52.5 F)	15 of 100 (Routine)
Ventspils	Latvia	Record daily precipitation	21.3 mm (0.8 in)	15 of 100 (Routine)
Tuscumbia	United States	Record high maximum temperature	38.3 C (100.9 F)	15 of 100 (Routine)
Union Springs 9 S	United States	Record high minimum temperature	23.9 C (75.0 F)	15 of 100 (Routine)
Baton Rouge	United States	Record high minimum temperature	25.0 C (77.0 F)	15 of 100 (Routine)
Grand Coteau	United States	Record high maximum temperature	38.3 C (100.9 F)	15 of 100 (Routine)
Steele 4N	United States	Record low maximum temperature	8.9 C (48.0 F)	15 of 100 (Routine)
Kempten	Germany	Record daily precipitation	19.5 mm (0.8 in)	14 of 100 (Routine)
Evergreen	United States	Record high minimum temperature	26.1 C (79.0 F)	14 of 100 (Routine)
Westernport	United States	Record high maximum temperature	36.1 C (97.0 F)	14 of 100 (Routine)
Big Rapids Wtp	United States	Record daily precipitation	18.3 mm (0.7 in)	14 of 100 (Routine)
Booneville	United States	Record high maximum temperature	36.7 C (98.1 F)	14 of 100 (Routine)
Brookhaven City	United States	Record high maximum temperature	38.9 C (102.0 F)	14 of 100 (Routine)
Macon 2 NE	United States	Record high maximum temperature	40.0 C (104.0 F)	14 of 100 (Routine)
New Bremen	United States	Record high minimum temperature	21.7 C (71.1 F)	14 of 100 (Routine)
Wauseon Wtp	United States	Record high maximum temperature	35.0 C (95.0 F)	14 of 100 (Routine)
Mc Minnville	United States	Record high minimum temperature	16.7 C (62.1 F)	14 of 100 (Routine)
Uniontown 1 NE	United States	Record high maximum temperature	33.3 C (91.9 F)	14 of 100 (Routine)
Newport 1 NW	United States	Record high maximum temperature	36.1 C (97.0 F)	14 of 100 (Routine)
Texarkana Webb Fld	United States	Record high maximum temperature	38.9 C (102.0 F)	14 of 100 (Routine)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	26.2 mm (1.0 in)	13 of 100 (Routine)

Counts by Type and Timescale

189 records

Records set or tied on 18 September 1927 by type: Highest daily maximum 88, Lowest daily maximum 9, Highest daily minimum 47, Lowest daily minimum 8, Heaviest daily rainfall 37.

Records on 18 September 1927 by type
Record type	Records
Highest daily maximum	88
Lowest daily maximum	9
Highest daily minimum	47
Lowest daily minimum	8
Heaviest daily rainfall	37
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 September 1927 by timescale: all-time 1, monthly 7, daily 181.

How Much Records Were Beaten By

141 broken records

Margins by which the 141 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 39.4. Ties are not counted.

Top 20 by Significance

18 September 1927

Top 20 records on 18 September 1927 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1927	Junsele, SE	monthly rain	44.1 mm (1.7 in)	15.3 mm (0.6 in)	12 years	50 of 100 (Notable)
18 September 1927	Kvikkjokk-Arrenjarka, SE	daily rain	27.2 mm (1.1 in)	15.3 mm (0.6 in)	27 years	44 of 100 (Notable)
18 September 1927	Johnstown, US	daily rain	60.2 mm (2.4 in)	39.4 mm (1.6 in)	14 years	43 of 100 (Notable)
18 September 1927	Harrisburg - Coop, US	daily rain	63.8 mm (2.5 in)	30.3 mm (1.2 in)	32 years	36 of 100 (Notable)
18 September 1927	Agassiz Cda, CA	daily high min	15.6 C (60.1 F)	3.9 C (7.0 F)	34 years	26 of 100 (Routine)
18 September 1927	Lebanon 3 W, US	daily rain	49.5 mm (1.9 in)	26.1 mm (1.0 in)	8 years	25 of 100 (Routine)
18 September 1927	S Bend AP, US	daily rain	54.4 mm (2.1 in)	16.3 mm (0.6 in)	20 years	25 of 100 (Routine)
18 September 1927	Beloit, US	daily rain	56.6 mm (2.2 in)	22.6 mm (0.9 in)	20 years	24 of 100 (Routine)
18 September 1927	Greensboro, US	daily high max	38.3 C (100.9 F)	3.3 C (5.9 F)	30 years	21 of 100 (Routine)
18 September 1927	Le Claire, US	daily rain	56.4 mm (2.2 in)	23.4 mm (0.9 in)	8 years	21 of 100 (Routine)
18 September 1927	Weissenburg, DE	daily rain	18.2 mm (0.7 in)	5.7 mm (0.22 in)	29 years	20 of 100 (Routine)
18 September 1927	Abitibi Post, CA	daily rain	19.3 mm (0.8 in)	8.6 mm (0.34 in)	24 years	20 of 100 (Routine)
18 September 1927	Susendal, NO	daily rain	22.7 mm (0.9 in)	4.9 mm (0.19 in)	28 years	20 of 100 (Routine)
18 September 1927	Blakely, US	daily rain	25.1 mm (1.0 in)	14.4 mm (0.6 in)	34 years	20 of 100 (Routine)
18 September 1927	Morrison, US	daily rain	30.0 mm (1.2 in)	14.0 mm (0.6 in)	24 years	20 of 100 (Routine)
18 September 1927	Aberdeen, US	daily high max	40.6 C (105.1 F)	3.4 C (6.1 F)	30 years	20 of 100 (Routine)
18 September 1927	Clinton #1, US	daily rain	33.0 mm (1.3 in)	13.4 mm (0.5 in)	26 years	19 of 100 (Routine)
18 September 1927	Galva, US	daily rain	33.8 mm (1.3 in)	9.4 mm (0.37 in)	30 years	18 of 100 (Routine)
18 September 1927	College STN 6 SW, US	daily high max	39.4 C (102.9 F)	1.6 C (2.9 F)	34 years	18 of 100 (Routine)
18 September 1927	Olga 2 SE, US	daily high min	15.6 C (60.1 F)	2.8 C (5.0 F)	8 years	18 of 100 (Routine)

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

1803 to 1927

Records set or tied on this calendar date in each year from 1803 to 1927. 1927 had 189 records.

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

Records on 09-18 in each year
Year	Records
1803	1
1811	1
1814	1
1819	1
1829	1
1832	1
1834	1
1835	1
1837	2
1847	2
1848	1
1849	1
1851	4
1859	1
1861	1
1865	1
1869	1
1871	1
1875	1
1876	2
1877	1
1879	1
1880	1
1881	1
1882	1
1885	1
1886	4
1889	6
1890	1
1891	1
1893	4
1894	2
1895	2
1896	4
1897	3
1898	5
1899	3
1900	2
1901	10
1902	8
1903	58
1904	6
1905	22
1906	16
1907	4
1908	11
1909	17
1910	5
1911	8
1912	43
1913	44
1914	56
1915	41
1916	58
1917	99
1918	57
1919	48
1920	56
1921	213
1922	45
1923	114
1924	62
1925	269
1926	205
1927	189
1928	114
1929	309
1930	124
1931	429
1932	226
1933	370
1934	188
1935	281
1936	155
1937	422
1938	373
1939	190
1940	402
1941	318
1942	1,001
1943	624
1944	503
1945	732
1946	576
1947	927
1948	427
1949	356
1950	370
1951	320
1952	340
1953	245
1954	446
1955	672
1956	587
1957	429
1958	491
1959	829
1960	351
1961	478
1962	360
1963	453
1964	282
1965	1,172
1966	498
1967	357
1968	763
1969	424
1970	377
1971	1,245
1972	691
1973	593
1974	559
1975	976
1976	615
1977	619
1978	1,162
1979	709
1980	652
1981	1,671
1982	603
1983	936
1984	951
1985	636
1986	730
1987	1,244
1988	997
1989	778
1990	904
1991	1,377
1992	821
1993	747
1994	852
1995	935
1996	1,237
1997	935
1998	1,038
1999	583
2000	1,146
2001	993
2002	828
2003	815
2004	1,027
2005	781
2006	1,309
2007	670
2008	697
2009	692
2010	1,040
2011	1,050
2012	922
2013	666
2014	682
2015	934
2016	893
2017	518
2018	1,200
2019	768
2020	682
2021	582
2022	613
2023	639
2024	687
2025	471
2026	864

Download the Data

Data for records on 1927-09-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	116
5 to 10	13
10 to 15	4
15 to 20	3
20 to 25	2
25 to 30	1
30 to 35	1
35 to 40	1