Weather Records on 20 October 1978

508 weather records were set or tied worldwide on 20 October 1978. Highest significance: Mulege, MX.

Key Facts for 20 October 1978

On 20 October 1978, 508 weather records were set or tied at long-record stations worldwide.
273 were record highs and 63 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 501 daily.
Mulege set a monthly record daily precipitation of 104.9 mm (4.1 in) on 20 October 1978.
Across 160 earlier years (1806 to 2025) the same calendar date averaged 457 records.

Record Map

508 stations

508 station records on 20 October 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 October 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mulege	Mexico	Record daily precipitation	104.9 mm (4.1 in)	60 of 100 (Major)
Oondooroo	Australia	Record daily precipitation	105.2 mm (4.1 in)	58 of 100 (Notable)
Atil	Mexico	Record daily precipitation	43.9 mm (1.7 in)	55 of 100 (Notable)
Man	Cote D'Ivoire	Record daily precipitation	86.1 mm (3.4 in)	52 of 100 (Notable)
Abidjan	Cote D'Ivoire	Record daily precipitation	128.3 mm (5.1 in)	48 of 100 (Notable)
Ojo de Agua	Mexico	Record daily precipitation	32.8 mm (1.3 in)	46 of 100 (Notable)
El Rosarito	Mexico	Record daily precipitation	31.8 mm (1.3 in)	45 of 100 (Notable)
Quiriego (Smn)	Mexico	Record daily precipitation	66.8 mm (2.6 in)	45 of 100 (Notable)
Tonichi	Mexico	Record daily precipitation	58.9 mm (2.3 in)	45 of 100 (Notable)
Garrigala	Turkmenistan	Record daily precipitation	27.9 mm (1.1 in)	45 of 100 (Notable)
Mecca Fire STN	United States	Record daily precipitation	46.5 mm (1.8 in)	42 of 100 (Notable)
Belmont	Australia	Record daily precipitation	78.0 mm (3.1 in)	41 of 100 (Notable)
Nogliki	Russia	Record daily precipitation	40.3 mm (1.6 in)	41 of 100 (Notable)
Guanambi	Brazil	Record daily precipitation	42.0 mm (1.7 in)	37 of 100 (Notable)
San Carlos Rsvr	United States	Record high minimum temperature	19.4 C (66.9 F)	36 of 100 (Notable)
Denair 3 NNE	United States	Record high minimum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Woodbine Station	Australia	Record daily precipitation	30.0 mm (1.2 in)	35 of 100 (Notable)
Torrens Creek Post Office	Australia	Record daily precipitation	36.8 mm (1.4 in)	34 of 100 (Routine)
Kailua 446	United States	Record high minimum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Boulia Airport	Australia	Record low maximum temperature	18.0 C (64.4 F)	33 of 100 (Routine)
Oliveira Dos Brejinhos	Brazil	Record daily precipitation	68.8 mm (2.7 in)	33 of 100 (Routine)
St George	United States	Record high minimum temperature	13.9 C (57.0 F)	33 of 100 (Routine)
Milray Station Wrc	Australia	Record daily precipitation	37.0 mm (1.5 in)	32 of 100 (Routine)
Lagoa Grande (Mmv)	Brazil	Record daily precipitation	62.2 mm (2.4 in)	32 of 100 (Routine)
Paramirim	Brazil	Record daily precipitation	41.7 mm (1.6 in)	32 of 100 (Routine)
Inukjuak Ua	Canada	Record daily snowfall	10.4 cm (4.1 in)	31 of 100 (Routine)
Grafton	United States	Record high maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Ipswich	United States	Record high maximum temperature	28.3 C (82.9 F)	31 of 100 (Routine)
Beaver	United States	Record high minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Gavar	Armenia	Record daily precipitation	28.3 mm (1.1 in)	30 of 100 (Routine)
Rio Do Peixe (Mmv)	Brazil	Record daily precipitation	51.8 mm (2.0 in)	30 of 100 (Routine)
Santa Rosalia (Dge)	Mexico	Record daily precipitation	47.8 mm (1.9 in)	30 of 100 (Routine)
Snowflake	United States	Record high minimum temperature	8.9 C (48.0 F)	30 of 100 (Routine)
Wakefield	Australia	Record daily precipitation	50.0 mm (2.0 in)	29 of 100 (Routine)
Fort Macleod	Canada	Record high minimum temperature	12.8 C (55.0 F)	29 of 100 (Routine)
Indio Fire STN	United States	Record high minimum temperature	20.0 C (68.0 F)	29 of 100 (Routine)
Camooweal Township	Australia	Record low maximum temperature	23.6 C (74.5 F)	28 of 100 (Routine)
Pekisko	Canada	Record daily snowfall	15.2 cm (6.0 in)	28 of 100 (Routine)
Chaplin	Canada	Record high maximum temperature	25.0 C (77.0 F)	28 of 100 (Routine)
Tempe	United States	Record high minimum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
Tehachapi	United States	Record high minimum temperature	13.3 C (55.9 F)	28 of 100 (Routine)
Caledonia	United States	Record high maximum temperature	22.8 C (73.0 F)	28 of 100 (Routine)
Okmulgee Wtr Wks	United States	Record high maximum temperature	31.7 C (89.1 F)	28 of 100 (Routine)
Tapirai-Jusante	Brazil	Record daily precipitation	58.1 mm (2.3 in)	27 of 100 (Routine)
Mexicali (Dge)	Mexico	Record daily precipitation	29.5 mm (1.2 in)	27 of 100 (Routine)
San Javier	Mexico	Record daily precipitation	37.3 mm (1.5 in)	27 of 100 (Routine)
Ft Valley	United States	Record high minimum temperature	2.2 C (36.0 F)	27 of 100 (Routine)
Big Timber	United States	Record high minimum temperature	10.6 C (51.1 F)	27 of 100 (Routine)
Oujda	Morocco	Record low minimum temperature	5.0 C (41.0 F)	26 of 100 (Routine)
Cabo San Lucas	Mexico	Record daily precipitation	31.0 mm (1.2 in)	26 of 100 (Routine)
Redlands	United States	Record high minimum temperature	16.1 C (61.0 F)	26 of 100 (Routine)
Charters Towers Post Office	Australia	Record low maximum temperature	25.7 C (78.3 F)	25 of 100 (Routine)
Jundah Post Office	Australia	Record daily precipitation	41.0 mm (1.6 in)	25 of 100 (Routine)
Paratinga	Brazil	Record daily precipitation	63.8 mm (2.5 in)	25 of 100 (Routine)
Sao Timoteo	Brazil	Record daily precipitation	34.3 mm (1.4 in)	25 of 100 (Routine)
Marre-Sale	Russia	Record low minimum temperature	-20.6 C (-5.1 F)	25 of 100 (Routine)
Oktjabrskaja	Russia	Record low minimum temperature	-2.1 C (28.2 F)	25 of 100 (Routine)
Central City	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
Cleburne	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
El-Golea	Algeria	Record low minimum temperature	5.6 C (42.1 F)	24 of 100 (Routine)

Counts by Type and Timescale

508 records

Records set or tied on 20 October 1978 by type: Highest daily maximum 136, Lowest daily maximum 33, Highest daily minimum 137, Lowest daily minimum 30, Heaviest daily rainfall 167, Heaviest daily snowfall 5.

Records on 20 October 1978 by type
Record type	Records
Highest daily maximum	136
Lowest daily maximum	33
Highest daily minimum	137
Lowest daily minimum	30
Heaviest daily rainfall	167
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 20 October 1978 by timescale: all-time 0, monthly 7, daily 501.

How Much Records Were Beaten By

386 broken records

Margins by which the 386 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 92.6. Ties are not counted.

Top 20 by Significance

20 October 1978

Top 20 records on 20 October 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 October 1978	Mulege, MX	monthly rain	104.9 mm (4.1 in)	54.6 mm (2.1 in)	21 years	60 of 100 (Major)
20 October 1978	Oondooroo, AU	monthly rain	105.2 mm (4.1 in)	72.7 mm (2.9 in)	8 years	58 of 100 (Notable)
20 October 1978	Atil, MX	daily rain	43.9 mm (1.7 in)	42.1 mm (1.7 in)	45 years	55 of 100 (Notable)
20 October 1978	Man, CI	daily rain	86.1 mm (3.4 in)	74.1 mm (2.9 in)	32 years	52 of 100 (Notable)
20 October 1978	Abidjan, CI	daily rain	128.3 mm (5.1 in)	92.6 mm (3.6 in)	19 years	48 of 100 (Notable)
20 October 1978	Ojo de Agua, MX	daily rain	32.8 mm (1.3 in)	32.8 mm (1.3 in)	36 years	46 of 100 (Notable)
20 October 1978	El Rosarito, MX	daily rain	31.8 mm (1.3 in)	31.8 mm (1.3 in)	36 years	45 of 100 (Notable)
20 October 1978	Quiriego (Smn), MX	daily rain	66.8 mm (2.6 in)	66.8 mm (2.6 in)	51 years	45 of 100 (Notable)
20 October 1978	Tonichi, MX	daily rain	58.9 mm (2.3 in)	54.1 mm (2.1 in)	27 years	45 of 100 (Notable)
20 October 1978	Garrigala, TM	daily rain	27.9 mm (1.1 in)	22.5 mm (0.9 in)	27 years	45 of 100 (Notable)
20 October 1978	Mecca Fire STN, US	monthly rain	46.5 mm (1.8 in)	4.6 mm (0.18 in)	71 years	42 of 100 (Notable)
20 October 1978	Belmont, AU	monthly rain	78.0 mm (3.1 in)	8.4 mm (0.33 in)	57 years	41 of 100 (Notable)
20 October 1978	Nogliki, RU	daily rain	40.3 mm (1.6 in)	21.8 mm (0.9 in)	39 years	41 of 100 (Notable)
20 October 1978	Guanambi, BR	daily rain	42.0 mm (1.7 in)	41.0 mm (1.6 in)	3 years	37 of 100 (Notable)
20 October 1978	San Carlos Rsvr, US	daily high min	19.4 C (66.9 F)	3.8 C (6.8 F)	72 years	36 of 100 (Notable)
20 October 1978	Denair 3 NNE, US	daily high min	15.0 C (59.0 F)	1.7 C (3.1 F)	78 years	36 of 100 (Notable)
20 October 1978	Woodbine Station, AU	daily rain	30.0 mm (1.2 in)	13.5 mm (0.5 in)	57 years	35 of 100 (Notable)
20 October 1978	Torrens Creek Post Office, AU	daily rain	36.8 mm (1.4 in)	19.0 mm (0.7 in)	32 years	34 of 100 (Routine)
20 October 1978	Kailua 446, US	daily high min	22.2 C (72.0 F)	1.1 C (2.0 F)	64 years	34 of 100 (Routine)
20 October 1978	Boulia Airport, AU	daily low max	18.0 C (64.4 F)	4.9 C (8.8 F)	47 years	33 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

1806 to 1978

Records set or tied on this calendar date in each year from 1806 to 1978. 1978 had 508 records.

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

Records on 10-20 in each year
Year	Records
1806	1
1835	1
1844	1
1846	1
1847	2
1851	1
1852	1
1858	1
1863	2
1864	2
1866	3
1867	1
1868	2
1872	2
1874	2
1875	3
1876	2
1877	1
1878	1
1880	3
1881	2
1884	1
1885	1
1886	1
1887	1
1888	6
1891	4
1892	4
1893	1
1894	3
1895	4
1896	9
1897	2
1898	7
1899	1
1900	8
1901	7
1902	5
1903	9
1904	13
1905	22
1906	28
1907	32
1908	26
1909	17
1910	31
1911	16
1912	6
1913	38
1914	16
1915	20
1916	72
1917	201
1918	34
1919	19
1920	81
1921	68
1922	83
1923	96
1924	182
1925	247
1926	147
1927	283
1928	92
1929	129
1930	672
1931	125
1932	331
1933	675
1934	422
1935	390
1936	370
1937	189
1938	231
1939	367
1940	757
1941	459
1942	152
1943	501
1944	288
1945	363
1946	310
1947	1,494
1948	320
1949	1,084
1950	619
1951	279
1952	520
1953	1,057
1954	262
1955	529
1956	283
1957	440
1958	461
1959	451
1960	671
1961	479
1962	733
1963	765
1964	598
1965	340
1966	857
1967	511
1968	244
1969	607
1970	710
1971	606
1972	1,724
1973	878
1974	1,122
1975	587
1976	1,304
1977	467
1978	508
1979	1,647
1980	350
1981	1,083
1982	1,191
1983	944
1984	1,562
1985	835
1986	823
1987	590
1988	737
1989	2,092
1990	609
1991	971
1992	1,174
1993	1,238
1994	650
1995	703
1996	1,417
1997	949
1998	683
1999	603
2000	737
2001	589
2002	985
2003	1,761
2004	1,861
2005	1,092
2006	1,170
2007	923
2008	477
2009	786
2010	539
2011	785
2012	945
2013	592
2014	851
2015	523
2016	947
2017	602
2018	394
2019	744
2020	1,010
2021	900
2022	834
2023	1,468
2024	707
2025	326

Download the Data

Data for records on 1978-10-20: 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	354
20 to 40	20
40 to 60	7
60 to 80	4
80 to 100	1