Weather Records on 24 September 1986

1,207 weather records were set or tied worldwide on 24 September 1986. Highest significance: Chinook, US.

Key Facts for 24 September 1986

On 24 September 1986, 1,207 weather records were set or tied at long-record stations worldwide.
296 were record highs and 397 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 77 monthly and 1,128 daily.
Chinook set an all-time record daily precipitation of 139.7 mm (5.5 in) on 24 September 1986.
Across 166 earlier years (1803 to 2026) the same calendar date averaged 423 records.

Record Map

1,207 stations

1,207 station records on 24 September 1986 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 24 September 1986: highest significance records shown on the map
Station	Country	Type	Value	Significance
Chinook	United States	Record daily precipitation	139.7 mm (5.5 in)	83 of 100 (Exceptional)
Sandheads	India	Record daily precipitation	161.0 mm (6.3 in)	56 of 100 (Notable)
Colstrip	United States	Record daily precipitation	41.9 mm (1.6 in)	56 of 100 (Notable)
Sonora	United States	Record daily precipitation	31.5 mm (1.2 in)	53 of 100 (Notable)
Hill City	United States	Record daily precipitation	30.7 mm (1.2 in)	52 of 100 (Notable)
Santa Barbara	United States	Record daily precipitation	36.8 mm (1.4 in)	51 of 100 (Notable)
Montmorillon	France	Record daily precipitation	32.7 mm (1.3 in)	50 of 100 (Notable)
Soledad de Graciano	Mexico	Record daily precipitation	64.3 mm (2.5 in)	50 of 100 (Notable)
Broadus	United States	Record daily precipitation	39.9 mm (1.6 in)	50 of 100 (Notable)
Cedar Lake	United States	Record daily precipitation	64.5 mm (2.5 in)	50 of 100 (Notable)
Ely AP	United States	Record daily snowfall	9.4 cm (3.7 in)	49 of 100 (Notable)
Hiawatha	United States	Record daily precipitation	29.2 mm (1.1 in)	48 of 100 (Notable)
Dolores	United States	Record daily precipitation	35.8 mm (1.4 in)	47 of 100 (Notable)
Rico	United States	Record daily snowfall	14.0 cm (5.5 in)	47 of 100 (Notable)
Los Angeles Intl AP	United States	Record daily precipitation	36.6 mm (1.4 in)	46 of 100 (Notable)
Cortez	United States	Record daily precipitation	25.1 mm (1.0 in)	45 of 100 (Notable)
Rico	United States	Record snow depth	15.2 cm (6.0 in)	45 of 100 (Notable)
Winslow AP	United States	Record low maximum temperature	13.9 C (57.0 F)	45 of 100 (Notable)
Rockford Gtr Rockford AP	United States	Record daily precipitation	82.8 mm (3.3 in)	45 of 100 (Notable)
Clermont-Ferrand	France	Record daily precipitation	31.3 mm (1.2 in)	44 of 100 (Notable)
La Crescenta Fc251 C	United States	Record daily precipitation	41.4 mm (1.6 in)	44 of 100 (Notable)
Hermit 8 SE	United States	Record low maximum temperature	3.9 C (39.0 F)	44 of 100 (Notable)
Prospect 2 SW	United States	Record daily precipitation	39.9 mm (1.6 in)	44 of 100 (Notable)
Panguitch	United States	Record low maximum temperature	10.0 C (50.0 F)	44 of 100 (Notable)
Twin Lakes	United States	Record daily snowfall	12.7 cm (5.0 in)	42 of 100 (Notable)
Fairfield	United States	Record daily precipitation	80.8 mm (3.2 in)	42 of 100 (Notable)
Drain	United States	Record daily precipitation	28.4 mm (1.1 in)	42 of 100 (Notable)
Sundance	United States	Record daily precipitation	41.7 mm (1.6 in)	42 of 100 (Notable)
Williams	United States	Record low maximum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Sonoma	United States	Record low maximum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Mesa Verde Np	United States	Record daily precipitation	37.8 mm (1.5 in)	41 of 100 (Notable)
Detour Village	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Beaver	United States	Record low maximum temperature	8.9 C (48.0 F)	41 of 100 (Notable)
Newport	United States	Record daily precipitation	25.7 mm (1.0 in)	41 of 100 (Notable)
Santa Barbara Muni AP	United States	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Dzaore	Russia	Record daily precipitation	57.8 mm (2.3 in)	40 of 100 (Notable)
Hansboro 4 NNE	United States	Record high minimum temperature	18.9 C (66.0 F)	40 of 100 (Notable)
Loa	United States	Record low maximum temperature	10.6 C (51.1 F)	40 of 100 (Notable)
Martinsburg E W Virginia Rgnl	United States	Record high minimum temperature	21.1 C (70.0 F)	40 of 100 (Notable)
Miami	United States	Record low minimum temperature	6.7 C (44.1 F)	39 of 100 (Notable)
St Charles Elm Pt	United States	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Lake Spaulding	United States	Record daily precipitation	44.5 mm (1.8 in)	38 of 100 (Notable)
Carrollton	United States	Record daily precipitation	92.7 mm (3.6 in)	38 of 100 (Notable)
Saverton L&D 22	United States	Record daily precipitation	85.1 mm (3.4 in)	38 of 100 (Notable)
Kanab	United States	Record low maximum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Longview	United States	Record daily precipitation	33.5 mm (1.3 in)	38 of 100 (Notable)
Saltillo	Mexico	Record daily precipitation	56.0 mm (2.2 in)	37 of 100 (Notable)
Saltillo (Dge)	Mexico	Record daily precipitation	55.9 mm (2.2 in)	37 of 100 (Notable)
Litchfield Park	United States	Record low maximum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Corona	United States	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Dulce	United States	Record low maximum temperature	7.2 C (45.0 F)	37 of 100 (Notable)
Parker	United States	Record daily precipitation	49.5 mm (1.9 in)	37 of 100 (Notable)
Zion Np	United States	Record low maximum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Rainer Ohanapecosh	United States	Record daily precipitation	37.1 mm (1.5 in)	37 of 100 (Notable)
Greer	United States	Record daily precipitation	51.8 mm (2.0 in)	36 of 100 (Notable)
San Rafael-Civic Ctr	United States	Record low maximum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Chillicothe 2S	United States	Record daily precipitation	59.2 mm (2.3 in)	36 of 100 (Notable)
Hermann	United States	Record daily precipitation	128.3 mm (5.1 in)	36 of 100 (Notable)
Ogden Pioneer Ph	United States	Record daily precipitation	29.2 mm (1.1 in)	36 of 100 (Notable)
Los Angeles Downtown/Usc	United States	Record low maximum temperature	16.7 C (62.1 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,207 records

Records set or tied on 24 September 1986 by type: Highest daily maximum 108, Lowest daily maximum 268, Highest daily minimum 188, Lowest daily minimum 129, Heaviest daily rainfall 490, Heaviest daily snowfall 17, Deepest snow cover 7.

Records on 24 September 1986 by type
Record type	Records
Highest daily maximum	108
Lowest daily maximum	268
Highest daily minimum	188
Lowest daily minimum	129
Heaviest daily rainfall	490
Heaviest daily snowfall	17
Deepest snow cover	7

Records on 24 September 1986 by timescale: all-time 2, monthly 77, daily 1,128.

How Much Records Were Beaten By

969 broken records

Margins by which the 969 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

24 September 1986

Top 20 records on 24 September 1986 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 September 1986	Chinook, US	all-time rain	139.7 mm (5.5 in)	49.5 mm (1.9 in)	48 years	83 of 100 (Exceptional)
24 September 1986	Sandheads, IN	daily rain	161.0 mm (6.3 in)	78.4 mm (3.1 in)	52 years	56 of 100 (Notable)
24 September 1986	Colstrip, US	daily rain	41.9 mm (1.6 in)	24.6 mm (1.0 in)	55 years	56 of 100 (Notable)
24 September 1986	Sonora, US	daily rain	31.5 mm (1.2 in)	28.2 mm (1.1 in)	77 years	53 of 100 (Notable)
24 September 1986	Hill City, US	daily rain	30.7 mm (1.2 in)	22.8 mm (0.9 in)	31 years	52 of 100 (Notable)
24 September 1986	Santa Barbara, US	daily rain	36.8 mm (1.4 in)	23.8 mm (0.9 in)	77 years	51 of 100 (Notable)
24 September 1986	Montmorillon, FR	daily rain	32.7 mm (1.3 in)	24.7 mm (1.0 in)	36 years	50 of 100 (Notable)
24 September 1986	Soledad de Graciano, MX	daily rain	64.3 mm (2.5 in)	61.5 mm (2.4 in)	23 years	50 of 100 (Notable)
24 September 1986	Broadus, US	daily rain	39.9 mm (1.6 in)	28.0 mm (1.1 in)	16 years	50 of 100 (Notable)
24 September 1986	Cedar Lake, US	daily rain	64.5 mm (2.5 in)	24.6 mm (1.0 in)	80 years	50 of 100 (Notable)
24 September 1986	Ely AP, US	monthly snowfall	9.4 cm (3.7 in)	1.8 cm (0.7 in)	91 years	49 of 100 (Notable)
24 September 1986	Hiawatha, US	daily rain	29.2 mm (1.1 in)	16.5 mm (0.6 in)	56 years	48 of 100 (Notable)
24 September 1986	Dolores, US	daily rain	35.8 mm (1.4 in)	24.6 mm (1.0 in)	28 years	47 of 100 (Notable)
24 September 1986	Rico, US	daily snowfall	14.0 cm (5.5 in)	11.5 cm (4.5 in)	52 years	47 of 100 (Notable)
24 September 1986	Los Angeles Intl AP, US	daily rain	36.6 mm (1.4 in)	36.1 mm (1.4 in)	9 years	46 of 100 (Notable)
24 September 1986	Cortez, US	daily rain	25.1 mm (1.0 in)	13.9 mm (0.5 in)	53 years	45 of 100 (Notable)
24 September 1986	Rico, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	72 years	45 of 100 (Notable)
24 September 1986	Winslow AP, US	daily low max	13.9 C (57.0 F)	4.4 C (7.9 F)	85 years	45 of 100 (Notable)
24 September 1986	Rockford Gtr Rockford AP, US	daily rain	82.8 mm (3.3 in)	55.1 mm (2.2 in)	17 years	45 of 100 (Notable)
24 September 1986	Clermont-Ferrand, FR	daily rain	31.3 mm (1.2 in)	14.4 mm (0.6 in)	61 years	44 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

1803 to 1986

Records set or tied on this calendar date in each year from 1803 to 1986. 1986 had 1,207 records.

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

Records on 09-24 in each year
Year	Records
1803	1
1835	1
1836	1
1842	1
1847	1
1852	2
1854	2
1857	2
1858	1
1859	1
1860	1
1863	1
1864	1
1865	1
1866	1
1867	2
1868	1
1870	3
1871	1
1872	1
1873	1
1874	2
1875	2
1876	1
1877	3
1878	2
1881	5
1884	1
1885	2
1887	1
1889	5
1890	1
1891	2
1892	5
1893	1
1894	2
1895	7
1896	2
1898	1
1899	4
1900	5
1901	3
1902	10
1903	8
1904	9
1905	7
1906	5
1907	20
1908	23
1909	31
1910	8
1911	11
1912	49
1913	9
1914	23
1915	159
1916	253
1917	87
1918	7
1919	26
1920	69
1921	23
1922	49
1923	70
1924	175
1925	146
1926	630
1927	194
1928	603
1929	137
1930	488
1931	463
1932	354
1933	424
1934	367
1935	449
1936	329
1937	237
1938	355
1939	331
1940	319
1941	319
1942	918
1943	413
1944	334
1945	475
1946	425
1947	704
1948	422
1949	554
1950	778
1951	580
1952	425
1953	346
1954	269
1955	577
1956	427
1957	370
1958	725
1959	414
1960	487
1961	680
1962	360
1963	715
1964	329
1965	624
1966	410
1967	394
1968	433
1969	278
1970	1,046
1971	485
1972	480
1973	1,208
1974	1,204
1975	1,116
1976	556
1977	814
1978	619
1979	577
1980	633
1981	604
1982	702
1983	1,128
1984	1,565
1985	771
1986	1,207
1987	729
1988	740
1989	1,668
1990	969
1991	519
1992	1,250
1993	1,055
1994	842
1995	1,251
1996	676
1997	1,238
1998	945
1999	933
2000	1,966
2001	1,097
2002	885
2003	863
2004	600
2005	1,256
2006	1,306
2007	1,244
2008	633
2009	866
2010	1,340
2011	770
2012	545
2013	514
2014	764
2015	770
2016	732
2017	1,402
2018	497
2019	516
2020	754
2021	457
2022	395
2023	689
2024	778
2025	576
2026	389

Download the Data

Data for records on 1986-09-24: 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	899
20 to 40	54
40 to 60	9
60 to 80	4
80 to 100	1
100 to 120	1
120 to 140	0
140 to 160	1