Weather Records on 20 October 1977

467 weather records were set or tied worldwide on 20 October 1977. Highest significance: Pilgrims Rest (Pol), ZA.

Key Facts for 20 October 1977

On 20 October 1977, 467 weather records were set or tied at long-record stations worldwide.
201 were record highs and 105 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 460 daily.
Pilgrims Rest (Pol) set a daily record precipitation of 62.5 mm (2.5 in) on 20 October 1977.
Across 160 earlier years (1806 to 2025) the same calendar date averaged 457 records.

Record Map

467 stations

467 station records on 20 October 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 October 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pilgrims Rest (Pol)	South Africa	Record daily precipitation	62.5 mm (2.5 in)	61 of 100 (Major)
Ust-Koksa	Russia	Record daily precipitation	48.7 mm (1.9 in)	57 of 100 (Notable)
Asmara	Eritrea	Record daily precipitation	27.0 mm (1.1 in)	53 of 100 (Notable)
Kameeldrift-Irr	South Africa	Record daily precipitation	42.5 mm (1.7 in)	49 of 100 (Notable)
Grootpoort	South Africa	Record daily precipitation	72.0 mm (2.8 in)	48 of 100 (Notable)
Vaalkop	South Africa	Record daily precipitation	75.0 mm (3.0 in)	45 of 100 (Notable)
Mapumulo (Tnk)	South Africa	Record daily precipitation	65.0 mm (2.6 in)	44 of 100 (Notable)
Arhangelsk	Russia	Record low maximum temperature	-4.8 C (23.4 F)	37 of 100 (Notable)
Yerevan	Armenia	Record low minimum temperature	-0.7 C (30.7 F)	36 of 100 (Notable)
Burpengary Ulmann Rd	Australia	Record daily precipitation	54.2 mm (2.1 in)	36 of 100 (Notable)
Jhb-Braamfontein (Cem)	South Africa	Record daily precipitation	29.5 mm (1.2 in)	35 of 100 (Notable)
Waterkloof	South Africa	Record daily precipitation	28.3 mm (1.1 in)	35 of 100 (Notable)
Elandspoort	South Africa	Record daily precipitation	41.0 mm (1.6 in)	35 of 100 (Notable)
Mmabatho Arpt	South Africa	Record daily precipitation	48.0 mm (1.9 in)	34 of 100 (Routine)
Buxton	United Kingdom	Record high minimum temperature	11.6 C (52.9 F)	33 of 100 (Routine)
Castle Dale	United States	Record high minimum temperature	8.9 C (48.0 F)	33 of 100 (Routine)
Pilanesberg-Pol	South Africa	Record daily precipitation	58.0 mm (2.3 in)	32 of 100 (Routine)
Nicosia	Cyprus	Record low maximum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Makwassie	South Africa	Record daily precipitation	26.0 mm (1.0 in)	31 of 100 (Routine)
Oliphantspoort	South Africa	Record daily precipitation	27.8 mm (1.1 in)	31 of 100 (Routine)
Georgetown	United States	Record high maximum temperature	32.2 C (90.0 F)	31 of 100 (Routine)
Aachen	Germany	Record high minimum temperature	13.0 C (55.4 F)	30 of 100 (Routine)
Klipfontein	South Africa	Record daily precipitation	35.2 mm (1.4 in)	30 of 100 (Routine)
Schierke	Germany	Record high maximum temperature	19.8 C (67.6 F)	29 of 100 (Routine)
Clausthal-Zellerfeld	Germany	Record high maximum temperature	17.5 C (63.5 F)	29 of 100 (Routine)
Rietpan	South Africa	Record daily precipitation	41.1 mm (1.6 in)	29 of 100 (Routine)
Doornkom	South Africa	Record daily precipitation	27.0 mm (1.1 in)	29 of 100 (Routine)
Klipkop-Irr	South Africa	Record daily precipitation	30.3 mm (1.2 in)	29 of 100 (Routine)
Bernburg/Saale (Nord)	Germany	Record high maximum temperature	21.4 C (70.5 F)	28 of 100 (Routine)
Den Helder-1	Netherlands	Record high maximum temperature	18.4 C (65.1 F)	28 of 100 (Routine)
Pretoria-Fountains	South Africa	Record daily precipitation	27.0 mm (1.1 in)	28 of 100 (Routine)
Grapevine Dam	United States	Record high maximum temperature	31.1 C (88.0 F)	28 of 100 (Routine)
Narjan Mar	Russia	Record low minimum temperature	-20.0 C (-4.0 F)	27 of 100 (Routine)
Twyfelspoort	South Africa	Record daily precipitation	27.5 mm (1.1 in)	27 of 100 (Routine)
Botataboomen	South Africa	Record daily precipitation	45.5 mm (1.8 in)	27 of 100 (Routine)
Valparaiso	United States	Record daily precipitation	33.8 mm (1.3 in)	27 of 100 (Routine)
Montrose	United States	Record daily precipitation	28.7 mm (1.1 in)	27 of 100 (Routine)
Big Delta AP	United States	Record snow depth	33.0 cm (13.0 in)	27 of 100 (Routine)
Uccle	Belgium	Record high minimum temperature	13.3 C (55.9 F)	26 of 100 (Routine)
Kojnas	Russia	Record low minimum temperature	-16.8 C (1.8 F)	26 of 100 (Routine)
Pretoria-New Cemetry	South Africa	Record daily precipitation	27.0 mm (1.1 in)	26 of 100 (Routine)
Nietverdiend (Pol)	South Africa	Record daily precipitation	45.0 mm (1.8 in)	26 of 100 (Routine)
Mochudi	Botswana	Record daily precipitation	28.5 mm (1.1 in)	25 of 100 (Routine)
Shenkursk	Russia	Record low maximum temperature	-5.0 C (23.0 F)	25 of 100 (Routine)
Pretoria-Burgerspark	South Africa	Record daily precipitation	25.0 mm (1.0 in)	25 of 100 (Routine)
Enzelberg	South Africa	Record daily precipitation	27.0 mm (1.1 in)	25 of 100 (Routine)
Deland 1 SSE	United States	Record low minimum temperature	7.2 C (45.0 F)	25 of 100 (Routine)
Catemaco	Mexico	Record low maximum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Hoseda Hard	Russia	Record low minimum temperature	-25.2 C (-13.4 F)	24 of 100 (Routine)
Zwartruggens (Pol)	South Africa	Record daily precipitation	25.5 mm (1.0 in)	24 of 100 (Routine)
Rooikop	South Africa	Record daily precipitation	34.5 mm (1.4 in)	24 of 100 (Routine)
Naalehu 14	United States	Record low minimum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Gagetown 2	Canada	Record daily precipitation	37.6 mm (1.5 in)	23 of 100 (Routine)
Pechora	Russia	Record low minimum temperature	-24.2 C (-11.6 F)	23 of 100 (Routine)
Oktyabr Skoye	Russia	Record low maximum temperature	-12.0 C (10.4 F)	23 of 100 (Routine)
Tot-Ma	Russia	Record low maximum temperature	-5.6 C (21.9 F)	23 of 100 (Routine)
Chita	Russia	Record high maximum temperature	16.5 C (61.7 F)	23 of 100 (Routine)
Bon Accord Dam	South Africa	Record daily precipitation	36.0 mm (1.4 in)	23 of 100 (Routine)
Kafferskraal	South Africa	Record daily precipitation	33.0 mm (1.3 in)	23 of 100 (Routine)
Barcelona/Aeropuerto	Spain	Record high minimum temperature	18.6 C (65.5 F)	23 of 100 (Routine)

Counts by Type and Timescale

467 records

Records set or tied on 20 October 1977 by type: Highest daily maximum 129, Lowest daily maximum 54, Highest daily minimum 72, Lowest daily minimum 51, Heaviest daily rainfall 158, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 20 October 1977 by type
Record type	Records
Highest daily maximum	129
Lowest daily maximum	54
Highest daily minimum	72
Lowest daily minimum	51
Heaviest daily rainfall	158
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 20 October 1977 by timescale: all-time 0, monthly 7, daily 460.

How Much Records Were Beaten By

383 broken records

Margins by which the 383 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.0. Ties are not counted.

Top 20 by Significance

20 October 1977

Top 20 records on 20 October 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 October 1977	Pilgrims Rest (Pol), ZA	daily rain	62.5 mm (2.5 in)	39.6 mm (1.6 in)	52 years	61 of 100 (Major)
20 October 1977	Ust-Koksa, RU	monthly rain	48.7 mm (1.9 in)	21.5 mm (0.8 in)	11 years	57 of 100 (Notable)
20 October 1977	Asmara, ER	daily rain	27.0 mm (1.1 in)	27.0 mm (1.1 in)	34 years	53 of 100 (Notable)
20 October 1977	Kameeldrift-Irr, ZA	daily rain	42.5 mm (1.7 in)	35.6 mm (1.4 in)	26 years	49 of 100 (Notable)
20 October 1977	Grootpoort, ZA	daily rain	72.0 mm (2.8 in)	46.3 mm (1.8 in)	36 years	48 of 100 (Notable)
20 October 1977	Vaalkop, ZA	monthly rain	75.0 mm (3.0 in)	26.0 mm (1.0 in)	12 years	45 of 100 (Notable)
20 October 1977	Mapumulo (Tnk), ZA	daily rain	65.0 mm (2.6 in)	41.5 mm (1.6 in)	8 years	44 of 100 (Notable)
20 October 1977	Arhangelsk, RU	daily low max	-4.8 C (23.4 F)	0.8 C (1.4 F)	90 years	37 of 100 (Notable)
20 October 1977	Yerevan, AM	daily low min	-0.7 C (30.7 F)	1.3 C (2.3 F)	80 years	36 of 100 (Notable)
20 October 1977	Burpengary Ulmann Rd, AU	daily rain	54.2 mm (2.1 in)	27.5 mm (1.1 in)	34 years	36 of 100 (Notable)
20 October 1977	Jhb-Braamfontein (Cem), ZA	daily rain	29.5 mm (1.2 in)	12.2 mm (0.5 in)	52 years	35 of 100 (Notable)
20 October 1977	Waterkloof, ZA	daily rain	28.3 mm (1.1 in)	13.8 mm (0.5 in)	52 years	35 of 100 (Notable)
20 October 1977	Elandspoort, ZA	daily rain	41.0 mm (1.6 in)	21.2 mm (0.8 in)	31 years	35 of 100 (Notable)
20 October 1977	Mmabatho Arpt, ZA	daily rain	48.0 mm (1.9 in)	26.4 mm (1.0 in)	8 years	34 of 100 (Routine)
20 October 1977	Buxton, GB	daily high min	11.6 C (52.9 F)	1.6 C (2.9 F)	64 years	33 of 100 (Routine)
20 October 1977	Castle Dale, US	daily high min	8.9 C (48.0 F)	2.8 C (5.0 F)	68 years	33 of 100 (Routine)
20 October 1977	Pilanesberg-Pol, ZA	daily rain	58.0 mm (2.3 in)	17.4 mm (0.7 in)	38 years	32 of 100 (Routine)
20 October 1977	Nicosia, CY	daily low max	20.0 C (68.0 F)	1.1 C (2.0 F)	67 years	31 of 100 (Routine)
20 October 1977	Makwassie, ZA	daily rain	26.0 mm (1.0 in)	14.8 mm (0.6 in)	38 years	31 of 100 (Routine)
20 October 1977	Oliphantspoort, ZA	daily rain	27.8 mm (1.1 in)	11.3 mm (0.4 in)	52 years	31 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 1977

Records set or tied on this calendar date in each year from 1806 to 1977. 1977 had 467 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 1977-10-20: 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	368
20 to 40	12
40 to 60	2
60 to 80	0
80 to 100	0
100 to 120	1