Weather Records on 29 September 1977

800 weather records were set or tied worldwide on 29 September 1977. Highest significance: Winona, US.

Key Facts for 29 September 1977

On 29 September 1977, 800 weather records were set or tied at long-record stations worldwide.
336 were record highs and 151 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 28 monthly and 772 daily.
Winona set a daily record precipitation of 44.7 mm (1.8 in) on 29 September 1977.
Across 157 earlier years (1836 to 2026) the same calendar date averaged 447 records.

Record Map

800 stations

800 station records on 29 September 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 29 September 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Winona	United States	Record daily precipitation	44.7 mm (1.8 in)	62 of 100 (Major)
Big Delta AP	United States	Record daily snowfall	15.2 cm (6.0 in)	50 of 100 (Notable)
Lysebotn	Norway	Record daily precipitation	89.6 mm (3.5 in)	49 of 100 (Notable)
Russellville	United States	Record daily precipitation	87.6 mm (3.4 in)	48 of 100 (Notable)
Jay	United States	Record daily precipitation	116.8 mm (4.6 in)	48 of 100 (Notable)
Greenwood A	Canada	Record daily precipitation	53.5 mm (2.1 in)	47 of 100 (Notable)
Uman	Ukraine	Record low minimum temperature	-6.0 C (21.2 F)	46 of 100 (Notable)
Grand River Dam	United States	Record daily precipitation	97.3 mm (3.8 in)	44 of 100 (Notable)
Hattiesburg 5SW	United States	Record daily precipitation	70.6 mm (2.8 in)	43 of 100 (Notable)
Ozark Beach 2 NNE	United States	Record daily precipitation	62.5 mm (2.5 in)	43 of 100 (Notable)
Conway	United States	Record daily precipitation	91.9 mm (3.6 in)	41 of 100 (Notable)
Hulah Dam	United States	Record daily precipitation	88.9 mm (3.5 in)	41 of 100 (Notable)
Antoine 1 SW	United States	Record daily precipitation	90.2 mm (3.6 in)	40 of 100 (Notable)
Gilbert	United States	Record daily precipitation	70.9 mm (2.8 in)	40 of 100 (Notable)
Tshakhuma	South Africa	Record daily precipitation	29.0 mm (1.1 in)	39 of 100 (Notable)
Kisinev	Moldova	Record low minimum temperature	-2.4 C (27.7 F)	38 of 100 (Notable)
Wellington	United States	Record daily precipitation	45.7 mm (1.8 in)	38 of 100 (Notable)
Wolmada	South Africa	Record daily precipitation	25.0 mm (1.0 in)	37 of 100 (Notable)
New Meadows Rs	United States	Record daily precipitation	25.4 mm (1.0 in)	37 of 100 (Notable)
Santa Terezinha	Brazil	Record daily precipitation	27.4 mm (1.1 in)	36 of 100 (Notable)
Koosharem	United States	Record high minimum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Healdton 3 E	United States	Record high minimum temperature	23.3 C (73.9 F)	35 of 100 (Notable)
Big Delta AP	United States	Record snow depth	10.2 cm (4.0 in)	35 of 100 (Notable)
Parrsboro	Canada	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Paisley	United Kingdom	Record daily precipitation	28.9 mm (1.1 in)	34 of 100 (Routine)
Dardanelle	United States	Record daily precipitation	59.7 mm (2.4 in)	34 of 100 (Routine)
Warren 2 ENE	United States	Record daily precipitation	54.4 mm (2.1 in)	34 of 100 (Routine)
Healdton 3 E	United States	Record high maximum temperature	36.7 C (98.1 F)	34 of 100 (Routine)
San Saba	United States	Record high maximum temperature	37.8 C (100.0 F)	34 of 100 (Routine)
Cotegipe	Brazil	Record daily precipitation	46.3 mm (1.8 in)	33 of 100 (Routine)
Annapolis Royal	Canada	Record daily precipitation	62.2 mm (2.4 in)	33 of 100 (Routine)
Butte Falls 1 SE	United States	Record daily precipitation	46.0 mm (1.8 in)	33 of 100 (Routine)
Bowie	United States	Record high maximum temperature	38.9 C (102.0 F)	33 of 100 (Routine)
Dayton 1 WSW	United States	Record low maximum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Valparaiso	United States	Record daily precipitation	28.7 mm (1.1 in)	32 of 100 (Routine)
Miami	United States	Record daily precipitation	87.1 mm (3.4 in)	32 of 100 (Routine)
Georgetown	United States	Record high maximum temperature	36.7 C (98.1 F)	32 of 100 (Routine)
Duved	Sweden	Record daily precipitation	27.6 mm (1.1 in)	31 of 100 (Routine)
Henichesk	Ukraine	Record low maximum temperature	9.6 C (49.3 F)	31 of 100 (Routine)
Newhope 3 E	United States	Record daily precipitation	58.4 mm (2.3 in)	31 of 100 (Routine)
Lamar	United States	Record high minimum temperature	16.7 C (62.1 F)	31 of 100 (Routine)
Curtis	United States	Record high minimum temperature	16.7 C (62.1 F)	31 of 100 (Routine)
Spavinaw	United States	Record daily precipitation	81.3 mm (3.2 in)	31 of 100 (Routine)
Menard	United States	Record high maximum temperature	37.8 C (100.0 F)	31 of 100 (Routine)
Midland 4 ENE	United States	Record high maximum temperature	38.9 C (102.0 F)	31 of 100 (Routine)
Stratford	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Black Rock	United States	Record high minimum temperature	11.1 C (52.0 F)	31 of 100 (Routine)
Snoqualmie Falls	United States	Record low maximum temperature	11.7 C (53.1 F)	31 of 100 (Routine)
Kentville Cda	Canada	Record daily precipitation	49.6 mm (2.0 in)	30 of 100 (Routine)
Risnes I Fjotland	Norway	Record daily precipitation	59.6 mm (2.3 in)	30 of 100 (Routine)
Tajshet	Russia	Record low minimum temperature	-10.2 C (13.6 F)	30 of 100 (Routine)
Chernivtsi	Ukraine	Record low minimum temperature	-4.4 C (24.1 F)	30 of 100 (Routine)
Nikolaev	Ukraine	Record low minimum temperature	-0.7 C (30.7 F)	30 of 100 (Routine)
Mineral	United States	Record daily precipitation	36.3 mm (1.4 in)	30 of 100 (Routine)
Syracuse 1NE	United States	Record high minimum temperature	17.8 C (64.0 F)	30 of 100 (Routine)
Hope	United States	Record high maximum temperature	37.2 C (99.0 F)	30 of 100 (Routine)
Calarasi	Romania	Record low minimum temperature	-2.6 C (27.3 F)	29 of 100 (Routine)
Bucuresti-Baneasa	Romania	Record low minimum temperature	-2.1 C (28.2 F)	29 of 100 (Routine)
Oktjabrskij-Gorodok	Russia	Record low maximum temperature	4.7 C (40.5 F)	29 of 100 (Routine)
Black Rock	United States	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)

Counts by Type and Timescale

800 records

Records set or tied on 29 September 1977 by type: Highest daily maximum 139, Lowest daily maximum 83, Highest daily minimum 197, Lowest daily minimum 68, Heaviest daily rainfall 310, Heaviest daily snowfall 2, Deepest snow cover 1.

Records on 29 September 1977 by type
Record type	Records
Highest daily maximum	139
Lowest daily maximum	83
Highest daily minimum	197
Lowest daily minimum	68
Heaviest daily rainfall	310
Heaviest daily snowfall	2
Deepest snow cover	1

Records on 29 September 1977 by timescale: all-time 0, monthly 28, daily 772.

How Much Records Were Beaten By

658 broken records

Margins by which the 658 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 139.0. Ties are not counted.

Top 20 by Significance

29 September 1977

Top 20 records on 29 September 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 September 1977	Winona, US	daily rain	44.7 mm (1.8 in)	25.6 mm (1.0 in)	83 years	62 of 100 (Major)
29 September 1977	Big Delta AP, US	daily snowfall	15.2 cm (6.0 in)	13.9 cm (5.5 in)	16 years	50 of 100 (Notable)
29 September 1977	Lysebotn, NO	daily rain	89.6 mm (3.5 in)	42.4 mm (1.7 in)	22 years	49 of 100 (Notable)
29 September 1977	Russellville, US	daily rain	87.6 mm (3.4 in)	47.0 mm (1.9 in)	34 years	48 of 100 (Notable)
29 September 1977	Jay, US	daily rain	116.8 mm (4.6 in)	95.5 mm (3.8 in)	18 years	48 of 100 (Notable)
29 September 1977	Greenwood A, CA	daily rain	53.5 mm (2.1 in)	37.0 mm (1.5 in)	14 years	47 of 100 (Notable)
29 September 1977	Uman, UA	monthly low min	-6.0 C (21.2 F)	2.3 C (4.1 F)	75 years	46 of 100 (Notable)
29 September 1977	Grand River Dam, US	daily rain	97.3 mm (3.8 in)	65.0 mm (2.6 in)	34 years	44 of 100 (Notable)
29 September 1977	Hattiesburg 5SW, US	daily rain	70.6 mm (2.8 in)	46.5 mm (1.8 in)	38 years	43 of 100 (Notable)
29 September 1977	Ozark Beach 2 NNE, US	daily rain	62.5 mm (2.5 in)	35.8 mm (1.4 in)	51 years	43 of 100 (Notable)
29 September 1977	Conway, US	daily rain	91.9 mm (3.6 in)	39.1 mm (1.5 in)	43 years	41 of 100 (Notable)
29 September 1977	Hulah Dam, US	daily rain	88.9 mm (3.5 in)	64.0 mm (2.5 in)	22 years	41 of 100 (Notable)
29 September 1977	Antoine 1 SW, US	daily rain	90.2 mm (3.6 in)	67.3 mm (2.6 in)	4 years	40 of 100 (Notable)
29 September 1977	Gilbert, US	daily rain	70.9 mm (2.8 in)	53.9 mm (2.1 in)	4 years	40 of 100 (Notable)
29 September 1977	Tshakhuma, ZA	daily rain	29.0 mm (1.1 in)	17.1 mm (0.7 in)	67 years	39 of 100 (Notable)
29 September 1977	Kisinev, MD	monthly low min	-2.4 C (27.7 F)	1.0 C (1.8 F)	60 years	38 of 100 (Notable)
29 September 1977	Wellington, US	daily rain	45.7 mm (1.8 in)	45.4 mm (1.8 in)	7 years	38 of 100 (Notable)
29 September 1977	Wolmada, ZA	daily rain	25.0 mm (1.0 in)	16.6 mm (0.7 in)	35 years	37 of 100 (Notable)
29 September 1977	New Meadows Rs, US	daily rain	25.4 mm (1.0 in)	14.5 mm (0.6 in)	28 years	37 of 100 (Notable)
29 September 1977	Santa Terezinha, BR	daily rain	27.4 mm (1.1 in)	17.6 mm (0.7 in)	0 years	36 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

1836 to 1977

Records set or tied on this calendar date in each year from 1836 to 1977. 1977 had 800 records.

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

Records on 09-29 in each year
Year	Records
1836	1
1843	1
1854	2
1859	2
1861	1
1862	1
1864	1
1867	1
1868	1
1869	2
1871	1
1873	3
1874	1
1877	2
1881	1
1882	1
1883	2
1884	2
1885	4
1886	1
1887	1
1888	3
1889	3
1890	4
1892	4
1893	1
1894	4
1895	4
1897	5
1898	4
1899	9
1900	3
1901	7
1902	14
1903	11
1904	26
1905	11
1906	16
1907	26
1908	20
1909	10
1910	10
1911	64
1912	27
1913	20
1914	24
1915	43
1916	184
1917	19
1918	36
1919	38
1920	22
1921	148
1922	33
1923	89
1924	264
1925	166
1926	195
1927	236
1928	212
1929	243
1930	71
1931	204
1932	234
1933	353
1934	394
1935	188
1936	399
1937	276
1938	423
1939	407
1940	346
1941	511
1942	858
1943	390
1944	398
1945	899
1946	265
1947	467
1948	334
1949	398
1950	472
1951	475
1952	404
1953	1,079
1954	814
1955	375
1956	380
1957	636
1958	309
1959	1,066
1960	143
1961	447
1962	481
1963	996
1964	1,154
1965	689
1966	498
1967	1,250
1968	184
1969	279
1970	629
1971	797
1972	637
1973	769
1974	730
1975	365
1976	636
1977	800
1978	569
1979	581
1980	874
1981	747
1982	911
1983	920
1984	1,447
1985	1,789
1986	1,624
1987	641
1988	554
1989	710
1990	416
1991	747
1992	833
1993	620
1994	967
1995	1,033
1996	1,356
1997	683
1998	1,295
1999	1,440
2000	965
2001	846
2002	557
2003	924
2004	754
2005	1,163
2006	695
2007	929
2008	461
2009	700
2010	1,110
2011	1,572
2012	737
2013	623
2014	548
2015	724
2016	912
2017	433
2018	582
2019	2,193
2020	444
2021	790
2022	600
2023	866
2024	1,391
2025	516
2026	544

Download the Data

Data for records on 1977-09-29: 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	621
20 to 40	25
40 to 60	7
60 to 80	3
80 to 100	1
100 to 120	0
120 to 140	1