Weather Records on 9 September 1979

878 weather records were set or tied worldwide on 9 September 1979. Highest significance: Mayaguez City, PR.

Key Facts for 9 September 1979

On 9 September 1979, 878 weather records were set or tied at long-record stations worldwide.
473 were record highs and 282 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 26 monthly and 851 daily.
Mayaguez City set a daily record low maximum temperature of 27.2 C (81.0 F) on 9 September 1979.
Across 162 earlier years (1806 to 2026) the same calendar date averaged 459 records.

Record Map

878 stations

878 station records on 9 September 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 September 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mayaguez City	Puerto Rico [United States]	Record low maximum temperature	27.2 C (81.0 F)	55 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record low maximum temperature	26.1 C (79.0 F)	49 of 100 (Notable)
Donaueschingen	Germany	Record daily precipitation	37.0 mm (1.5 in)	45 of 100 (Notable)
Wunstorf	Germany	Record daily precipitation	34.6 mm (1.4 in)	44 of 100 (Notable)
Mesa	United States	Record high minimum temperature	28.9 C (84.0 F)	43 of 100 (Notable)
Guantanamo Bay NAS	Cuba	Record daily precipitation	82.0 mm (3.2 in)	42 of 100 (Notable)
Amealco	Mexico	Record daily precipitation	64.8 mm (2.6 in)	42 of 100 (Notable)
Weimar-Schondorf	Germany	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Valle de Santiago	Mexico	Record daily precipitation	47.8 mm (1.9 in)	40 of 100 (Notable)
Brownsville	United States	Record daily precipitation	65.5 mm (2.6 in)	40 of 100 (Notable)
Herford	Germany	Record daily precipitation	37.6 mm (1.5 in)	39 of 100 (Notable)
Montpelier	United States	Record low maximum temperature	17.2 C (63.0 F)	38 of 100 (Notable)
Buffalo	United States	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Huamantla	Mexico	Record daily precipitation	39.9 mm (1.6 in)	37 of 100 (Notable)
Braunschweig-Gliesmarode	Germany	Record daily precipitation	26.3 mm (1.0 in)	36 of 100 (Notable)
San Ildelfonso Villa Alta	Mexico	Record low minimum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Tlaxco	Mexico	Record daily precipitation	49.5 mm (1.9 in)	36 of 100 (Notable)
Olga 2 SE	United States	Record high minimum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
Kaycee	United States	Record high maximum temperature	36.1 C (97.0 F)	36 of 100 (Notable)
Zinder	Niger	Record daily precipitation	39.6 mm (1.6 in)	35 of 100 (Notable)
Troicko-Pecherskoe	Russia	Record low minimum temperature	-3.2 C (26.2 F)	35 of 100 (Notable)
Redlands	United States	Record high maximum temperature	44.4 C (111.9 F)	34 of 100 (Routine)
Delta	United States	Record high maximum temperature	35.6 C (96.1 F)	34 of 100 (Routine)
Basin	United States	Record high maximum temperature	36.7 C (98.1 F)	34 of 100 (Routine)
Claremont Pomona Clg	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Deland 1 SSE	United States	Record high minimum temperature	24.4 C (75.9 F)	33 of 100 (Routine)
Carrollton Lock 1	United States	Record low maximum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
St Charles Elm Pt	United States	Record low minimum temperature	7.8 C (46.0 F)	33 of 100 (Routine)
Wessington Springs	United States	Record high maximum temperature	39.4 C (102.9 F)	33 of 100 (Routine)
Carlyle	Canada	Record daily precipitation	28.2 mm (1.1 in)	32 of 100 (Routine)
Wurzburg	Germany	Record daily precipitation	26.9 mm (1.1 in)	32 of 100 (Routine)
Viljujsk	Russia	Record low minimum temperature	-7.2 C (19.0 F)	32 of 100 (Routine)
Independence	United States	Record high maximum temperature	40.0 C (104.0 F)	32 of 100 (Routine)
Castle Rock	United States	Record high maximum temperature	33.9 C (93.0 F)	32 of 100 (Routine)
Gunnison 3SW	United States	Record high maximum temperature	29.4 C (84.9 F)	32 of 100 (Routine)
Bucyrus	United States	Record low maximum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Ft Duchesne	United States	Record high maximum temperature	35.0 C (95.0 F)	32 of 100 (Routine)
Moorcroft 3S	United States	Record high maximum temperature	36.7 C (98.1 F)	32 of 100 (Routine)
Coalville	United States	Record high minimum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Richmond Post Office	Australia	Record high maximum temperature	37.0 C (98.6 F)	31 of 100 (Routine)
Fort McMurray A	Canada	Record daily precipitation	31.4 mm (1.2 in)	31 of 100 (Routine)
Trier-Petrisberg	Germany	Record daily precipitation	28.0 mm (1.1 in)	31 of 100 (Routine)
Mesa	United States	Record high maximum temperature	42.8 C (109.0 F)	31 of 100 (Routine)
San Bernardino F S 226	United States	Record high maximum temperature	45.6 C (114.1 F)	31 of 100 (Routine)
Farmland 5 NNW	United States	Record low maximum temperature	16.7 C (62.1 F)	31 of 100 (Routine)
Rockville 1 NE	United States	Record low minimum temperature	4.4 C (39.9 F)	31 of 100 (Routine)
Flatwillow 4 ENE	United States	Record high minimum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Sidney	United States	Record high minimum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Elberta	United States	Record high minimum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Scottsbluff W B Heilig Fld AP	United States	Record high maximum temperature	37.8 C (100.0 F)	31 of 100 (Routine)
Illalangi	Australia	Record daily precipitation	28.6 mm (1.1 in)	30 of 100 (Routine)
Buckeye	United States	Record high minimum temperature	28.9 C (84.0 F)	30 of 100 (Routine)
Pasadena	United States	Record high maximum temperature	41.1 C (106.0 F)	30 of 100 (Routine)
Adrian 2 NNE	United States	Record low minimum temperature	3.3 C (37.9 F)	30 of 100 (Routine)
Ely AP	United States	Record high minimum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Verhojansk	Russia	Record low minimum temperature	-13.3 C (8.1 F)	29 of 100 (Routine)
Gvasjugi	Russia	Record daily precipitation	29.3 mm (1.2 in)	29 of 100 (Routine)
Riverside Fire STN 3	United States	Record high maximum temperature	43.9 C (111.0 F)	29 of 100 (Routine)
Brooksville Chin Hill	United States	Record daily precipitation	43.2 mm (1.7 in)	29 of 100 (Routine)
Rosedale	United States	Record low minimum temperature	10.6 C (51.1 F)	29 of 100 (Routine)

Counts by Type and Timescale

878 records

Records set or tied on 9 September 1979 by type: Highest daily maximum 252, Lowest daily maximum 137, Highest daily minimum 221, Lowest daily minimum 145, Heaviest daily rainfall 122, Heaviest daily snowfall 1.

Records on 9 September 1979 by type
Record type	Records
Highest daily maximum	252
Lowest daily maximum	137
Highest daily minimum	221
Lowest daily minimum	145
Heaviest daily rainfall	122
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 9 September 1979 by timescale: all-time 1, monthly 26, daily 851.

How Much Records Were Beaten By

624 broken records

Margins by which the 624 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 58.9. Ties are not counted.

Top 20 by Significance

9 September 1979

Top 20 records on 9 September 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 September 1979	Mayaguez City, PR	daily low max	27.2 C (81.0 F)	3.4 C (6.1 F)	70 years	55 of 100 (Notable)
9 September 1979	Ponce 4 E, PR	daily low max	26.1 C (79.0 F)	3.9 C (7.0 F)	40 years	49 of 100 (Notable)
9 September 1979	Donaueschingen, DE	daily rain	37.0 mm (1.5 in)	21.6 mm (0.9 in)	13 years	45 of 100 (Notable)
9 September 1979	Wunstorf, DE	daily rain	34.6 mm (1.4 in)	20.5 mm (0.8 in)	4 years	44 of 100 (Notable)
9 September 1979	Mesa, US	monthly high min	28.9 C (84.0 F)	1.1 C (2.0 F)	76 years	43 of 100 (Notable)
9 September 1979	Guantanamo Bay NAS, CU	daily rain	82.0 mm (3.2 in)	58.9 mm (2.3 in)	25 years	42 of 100 (Notable)
9 September 1979	Amealco, MX	daily rain	64.8 mm (2.6 in)	39.4 mm (1.6 in)	16 years	42 of 100 (Notable)
9 September 1979	Weimar-Schondorf, DE	daily rain	25.4 mm (1.0 in)	15.3 mm (0.6 in)	26 years	40 of 100 (Notable)
9 September 1979	Valle de Santiago, MX	daily rain	47.8 mm (1.9 in)	22.7 mm (0.9 in)	56 years	40 of 100 (Notable)
9 September 1979	Brownsville, US	daily rain	65.5 mm (2.6 in)	35.5 mm (1.4 in)	57 years	40 of 100 (Notable)
9 September 1979	Herford, DE	monthly rain	37.6 mm (1.5 in)	6.7 mm (0.26 in)	43 years	39 of 100 (Notable)
9 September 1979	Montpelier, US	daily low max	17.2 C (63.0 F)	3.9 C (7.0 F)	77 years	38 of 100 (Notable)
9 September 1979	Buffalo, US	daily high min	18.9 C (66.0 F)	3.3 C (5.9 F)	78 years	38 of 100 (Notable)
9 September 1979	Huamantla, MX	daily rain	39.9 mm (1.6 in)	26.9 mm (1.1 in)	16 years	37 of 100 (Notable)
9 September 1979	Braunschweig-Gliesmarode, DE	daily rain	26.3 mm (1.0 in)	15.3 mm (0.6 in)	4 years	36 of 100 (Notable)
9 September 1979	San Ildelfonso Villa Alta, MX	monthly low min	10.6 C (51.1 F)	1.1 C (2.0 F)	45 years	36 of 100 (Notable)
9 September 1979	Tlaxco, MX	daily rain	49.5 mm (1.9 in)	31.2 mm (1.2 in)	21 years	36 of 100 (Notable)
9 September 1979	Olga 2 SE, US	daily high min	13.9 C (57.0 F)	1.1 C (2.0 F)	76 years	36 of 100 (Notable)
9 September 1979	Kaycee, US	daily high max	36.1 C (97.0 F)	3.9 C (7.0 F)	74 years	36 of 100 (Notable)
9 September 1979	Zinder, NE	daily rain	39.6 mm (1.6 in)	10.4 mm (0.4 in)	69 years	35 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 1979

Records set or tied on this calendar date in each year from 1806 to 1979. 1979 had 878 records.

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

Records on 09-09 in each year
Year	Records
1806	1
1812	1
1813	1
1814	2
1834	1
1836	1
1845	1
1847	1
1848	1
1849	2
1850	1
1854	1
1864	2
1865	3
1866	3
1867	1
1869	1
1871	1
1873	1
1878	1
1879	1
1880	2
1883	3
1884	4
1886	1
1888	4
1889	1
1890	1
1891	1
1892	4
1893	4
1894	3
1895	7
1897	3
1898	5
1899	6
1900	1
1901	4
1902	5
1903	14
1904	9
1905	8
1906	24
1907	9
1908	5
1909	9
1910	17
1911	27
1912	48
1913	12
1914	69
1915	48
1916	16
1917	44
1918	40
1919	74
1920	145
1921	92
1922	115
1923	58
1924	232
1925	248
1926	168
1927	246
1928	108
1929	362
1930	211
1931	558
1932	302
1933	433
1934	256
1935	461
1936	297
1937	242
1938	416
1939	429
1940	294
1941	763
1942	357
1943	596
1944	719
1945	355
1946	366
1947	465
1948	307
1949	1,407
1950	426
1951	338
1952	511
1953	344
1954	283
1955	608
1956	742
1957	390
1958	419
1959	736
1960	492
1961	383
1962	847
1963	400
1964	488
1965	326
1966	366
1967	367
1968	440
1969	603
1970	584
1971	498
1972	464
1973	517
1974	689
1975	555
1976	773
1977	410
1978	702
1979	878
1980	829
1981	1,011
1982	814
1983	958
1984	1,304
1985	1,269
1986	1,026
1987	676
1988	836
1989	983
1990	762
1991	882
1992	620
1993	886
1994	892
1995	937
1996	809
1997	837
1998	1,667
1999	1,013
2000	811
2001	1,647
2002	1,355
2003	786
2004	1,603
2005	1,068
2006	917
2007	948
2008	1,161
2009	792
2010	1,049
2011	1,328
2012	681
2013	974
2014	590
2015	806
2016	1,210
2017	661
2018	876
2019	953
2020	2,579
2021	1,458
2022	1,094
2023	1,222
2024	1,146
2025	520
2026	815

Download the Data

Data for records on 1979-09-09: 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).