Weather Records on 30 September 2018

717 weather records were set or tied worldwide on 30 September 2018. Highest significance: Markovo, RU.

Key Facts for 30 September 2018

On 30 September 2018, 717 weather records were set or tied at long-record stations worldwide.
298 were record highs and 304 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 54 monthly and 663 daily.
Markovo set a daily record precipitation of 25.4 mm (1.0 in) on 30 September 2018.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 438 records.

Record Map

717 stations

717 station records on 30 September 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Markovo	Russia	Record daily precipitation	25.4 mm (1.0 in)	69 of 100 (Major)
Ulupalakua Rch 250	United States	Record daily precipitation	59.2 mm (2.3 in)	58 of 100 (Notable)
Fukuyama	Japan	Record daily precipitation	109.0 mm (4.3 in)	51 of 100 (Notable)
Cape Moreton Lighthouse	Australia	Record daily precipitation	45.0 mm (1.8 in)	49 of 100 (Notable)
Miyakonojo	Japan	Record daily precipitation	261.1 mm (10.3 in)	48 of 100 (Notable)
Avon Park 2 W	United States	Record high minimum temperature	25.0 C (77.0 F)	48 of 100 (Notable)
Desert Nwr	United States	Record high minimum temperature	23.9 C (75.0 F)	47 of 100 (Notable)
Pomeroy	United States	Record low minimum temperature	-5.6 C (21.9 F)	47 of 100 (Notable)
Kleve	Germany	Record low minimum temperature	1.2 C (34.2 F)	46 of 100 (Notable)
Dime Box	United States	Record daily precipitation	122.9 mm (4.8 in)	46 of 100 (Notable)
Richfield Radio Ksvc	United States	Record high minimum temperature	13.3 C (55.9 F)	46 of 100 (Notable)
Allerton	United States	Record low maximum temperature	11.1 C (52.0 F)	45 of 100 (Notable)
New London	United States	Record low maximum temperature	6.7 C (44.1 F)	45 of 100 (Notable)
Kula Hospital 267	United States	Record daily precipitation	81.3 mm (3.2 in)	45 of 100 (Notable)
Ostrov Vrangelja	Russia	Record high maximum temperature	6.9 C (44.4 F)	44 of 100 (Notable)
Stevens Pt	United States	Record low maximum temperature	6.1 C (43.0 F)	44 of 100 (Notable)
Hellinikon	Greece	Record daily precipitation	51.8 mm (2.0 in)	43 of 100 (Notable)
Floresville	United States	Record daily precipitation	56.4 mm (2.2 in)	43 of 100 (Notable)
Marinette	United States	Record low maximum temperature	8.3 C (46.9 F)	43 of 100 (Notable)
Tadotsu	Japan	Record daily precipitation	132.1 mm (5.2 in)	42 of 100 (Notable)
Chilton	United States	Record low maximum temperature	8.9 C (48.0 F)	42 of 100 (Notable)
Mauston 1 SE	United States	Record low maximum temperature	8.9 C (48.0 F)	42 of 100 (Notable)
Sturgeon Bay Exp Farm	United States	Record low maximum temperature	7.8 C (46.0 F)	42 of 100 (Notable)
Nome AP	United States	Record high minimum temperature	10.0 C (50.0 F)	42 of 100 (Notable)
Grand Meadow	United States	Record low maximum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Canton	United States	Record low maximum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Winter	United States	Record low maximum temperature	5.6 C (42.1 F)	41 of 100 (Notable)
Choteau	United States	Record low maximum temperature	-0.6 C (30.9 F)	40 of 100 (Notable)
Kotzebue AP	United States	Record high maximum temperature	12.8 C (55.0 F)	40 of 100 (Notable)
Ostrov Vrangelja	Russia	Record high minimum temperature	5.1 C (41.2 F)	39 of 100 (Notable)
Conrad	United States	Record low maximum temperature	0.6 C (33.1 F)	39 of 100 (Notable)
Black Rock	United States	Record high minimum temperature	15.6 C (60.1 F)	39 of 100 (Notable)
San Francisco Dwtn	United States	Record high minimum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Nome AP	United States	Record high maximum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Bad-Ahrweiler Neuenahr	Germany	Record low minimum temperature	0.1 C (32.2 F)	38 of 100 (Notable)
Crescent City	United States	Record high minimum temperature	24.4 C (75.9 F)	38 of 100 (Notable)
Fishtail	United States	Record daily snowfall	6.4 cm (2.5 in)	38 of 100 (Notable)
Ladysmith 3W	United States	Record low maximum temperature	5.0 C (41.0 F)	38 of 100 (Notable)
Hanksville	United States	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Ft Lauderdale	United States	Record high minimum temperature	26.7 C (80.1 F)	37 of 100 (Notable)
Valentine	United States	Record low maximum temperature	5.6 C (42.1 F)	37 of 100 (Notable)
Yonago	Japan	Record daily precipitation	180.1 mm (7.1 in)	36 of 100 (Notable)
Cape Agulhas	South Africa	Record high maximum temperature	26.5 C (79.7 F)	36 of 100 (Notable)
Bright Angel Rs	United States	Record high minimum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Alexandria	United States	Record low maximum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Tooele	United States	Record high minimum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Marshfield Exp Farm	United States	Record low maximum temperature	5.6 C (42.1 F)	36 of 100 (Notable)
Lake Echo Power Station	Australia	Record daily precipitation	58.6 mm (2.3 in)	35 of 100 (Notable)
Kr. Marburg-Biedenkopf Colbe	Germany	Record low minimum temperature	-0.8 C (30.6 F)	35 of 100 (Notable)
Moab	United States	Record high minimum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
New Hampton	United States	Record low maximum temperature	6.1 C (43.0 F)	34 of 100 (Routine)
Oakland	United States	Record low maximum temperature	9.4 C (48.9 F)	34 of 100 (Routine)
Big Bay 1NW	United States	Record low maximum temperature	5.6 C (42.1 F)	34 of 100 (Routine)
Forestburg 4 NNE	United States	Record low maximum temperature	7.8 C (46.0 F)	34 of 100 (Routine)
Shawano 2SSW	United States	Record low maximum temperature	6.7 C (44.1 F)	34 of 100 (Routine)
Dusseldorf	Germany	Record low minimum temperature	1.8 C (35.2 F)	33 of 100 (Routine)
Giessen/Wettenberg	Germany	Record low minimum temperature	-0.1 C (31.8 F)	33 of 100 (Routine)
Saigo	Japan	Record daily precipitation	115.1 mm (4.5 in)	33 of 100 (Routine)
Suntar	Russia	Record high maximum temperature	18.2 C (64.8 F)	33 of 100 (Routine)
Calvinia	South Africa	Record high maximum temperature	36.3 C (97.3 F)	33 of 100 (Routine)

Counts by Type and Timescale

717 records

Records set or tied on 30 September 2018 by type: Highest daily maximum 98, Lowest daily maximum 211, Highest daily minimum 200, Lowest daily minimum 93, Heaviest daily rainfall 96, Heaviest daily snowfall 12, Deepest snow cover 7.

Records on 30 September 2018 by type
Record type	Records
Highest daily maximum	98
Lowest daily maximum	211
Highest daily minimum	200
Lowest daily minimum	93
Heaviest daily rainfall	96
Heaviest daily snowfall	12
Deepest snow cover	7

Records on 30 September 2018 by timescale: all-time 0, monthly 54, daily 663.

How Much Records Were Beaten By

558 broken records

Margins by which the 558 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 121.6. Ties are not counted.

Top 20 by Significance

30 September 2018

Top 20 records on 30 September 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 2018	Markovo, RU	daily rain	25.4 mm (1.0 in)	14.1 mm (0.6 in)	100 years	69 of 100 (Major)
30 September 2018	Ulupalakua Rch 250, US	daily rain	59.2 mm (2.3 in)	48.8 mm (1.9 in)	49 years	58 of 100 (Notable)
30 September 2018	Fukuyama, JP	daily rain	109.0 mm (4.3 in)	66.5 mm (2.6 in)	39 years	51 of 100 (Notable)
30 September 2018	Cape Moreton Lighthouse, AU	daily rain	45.0 mm (1.8 in)	21.4 mm (0.8 in)	64 years	49 of 100 (Notable)
30 September 2018	Miyakonojo, JP	daily rain	261.1 mm (10.3 in)	121.6 mm (4.8 in)	39 years	48 of 100 (Notable)
30 September 2018	Avon Park 2 W, US	daily high min	25.0 C (77.0 F)	1.1 C (2.0 F)	103 years	48 of 100 (Notable)
30 September 2018	Desert Nwr, US	daily high min	23.9 C (75.0 F)	7.2 C (13.0 F)	72 years	47 of 100 (Notable)
30 September 2018	Pomeroy, US	monthly low min	-5.6 C (21.9 F)	1.2 C (2.2 F)	84 years	47 of 100 (Notable)
30 September 2018	Kleve, DE	monthly low min	1.2 C (34.2 F)	0.2 C (0.4 F)	87 years	46 of 100 (Notable)
30 September 2018	Dime Box, US	daily rain	122.9 mm (4.8 in)	83.3 mm (3.3 in)	5 years	46 of 100 (Notable)
30 September 2018	Richfield Radio Ksvc, US	daily high min	13.3 C (55.9 F)	2.7 C (4.9 F)	100 years	46 of 100 (Notable)
30 September 2018	Allerton, US	daily low max	11.1 C (52.0 F)	2.8 C (5.0 F)	111 years	45 of 100 (Notable)
30 September 2018	New London, US	daily low max	6.7 C (44.1 F)	2.7 C (4.9 F)	118 years	45 of 100 (Notable)
30 September 2018	Kula Hospital 267, US	daily rain	81.3 mm (3.2 in)	63.5 mm (2.5 in)	4 years	45 of 100 (Notable)
30 September 2018	Ostrov Vrangelja, RU	daily high max	6.9 C (44.4 F)	3.1 C (5.6 F)	84 years	44 of 100 (Notable)
30 September 2018	Stevens Pt, US	daily low max	6.1 C (43.0 F)	2.2 C (4.0 F)	109 years	44 of 100 (Notable)
30 September 2018	Hellinikon, GR	monthly rain	51.8 mm (2.0 in)	11.4 mm (0.4 in)	40 years	43 of 100 (Notable)
30 September 2018	Floresville, US	daily rain	56.4 mm (2.2 in)	31.0 mm (1.2 in)	72 years	43 of 100 (Notable)
30 September 2018	Marinette, US	daily low max	8.3 C (46.9 F)	2.3 C (4.1 F)	97 years	43 of 100 (Notable)
30 September 2018	Tadotsu, JP	daily rain	132.1 mm (5.2 in)	57.6 mm (2.3 in)	39 years	42 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

1806 to 2018

Records set or tied on this calendar date in each year from 1806 to 2018. 2018 had 717 records.

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

Records on 09-30 in each year
Year	Records
1806	1
1813	1
1817	1
1819	2
1834	1
1841	1
1842	1
1847	1
1853	1
1854	1
1855	1
1861	1
1862	1
1866	1
1868	2
1869	3
1870	1
1874	1
1877	1
1878	1
1881	5
1883	2
1885	1
1886	3
1887	1
1888	4
1889	1
1892	2
1893	3
1894	8
1895	5
1896	2
1897	3
1898	3
1899	12
1900	4
1901	11
1902	7
1903	9
1904	14
1905	25
1906	14
1907	16
1908	18
1909	10
1910	5
1911	47
1912	47
1913	10
1914	33
1915	84
1916	209
1917	19
1918	45
1919	28
1920	71
1921	61
1922	71
1923	183
1924	243
1925	211
1926	194
1927	486
1928	560
1929	181
1930	110
1931	225
1932	363
1933	437
1934	398
1935	209
1936	432
1937	417
1938	428
1939	371
1940	316
1941	482
1942	405
1943	404
1944	369
1945	889
1946	320
1947	433
1948	267
1949	366
1950	731
1951	597
1952	504
1953	1,136
1954	1,059
1955	406
1956	350
1957	663
1958	442
1959	1,159
1960	161
1961	618
1962	202
1963	818
1964	332
1965	459
1966	592
1967	859
1968	449
1969	465
1970	334
1971	1,359
1972	676
1973	407
1974	742
1975	686
1976	775
1977	870
1978	399
1979	479
1980	832
1981	688
1982	806
1983	1,102
1984	1,267
1985	1,892
1986	1,805
1987	649
1988	453
1989	713
1990	665
1991	949
1992	980
1993	988
1994	816
1995	1,061
1996	1,396
1997	729
1998	1,206
1999	1,144
2000	887
2001	699
2002	677
2003	1,079
2004	573
2005	761
2006	617
2007	841
2008	585
2009	826
2010	1,059
2011	1,258
2012	637
2013	634
2014	529
2015	997
2016	746
2017	404
2018	717
2019	2,192
2020	554
2021	823
2022	563
2023	1,012
2024	948
2025	559
2026	529

Download the Data

Data for records on 2018-09-30: 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	521
20 to 40	20
40 to 60	9
60 to 80	6
80 to 100	1
100 to 120	0
120 to 140	1