Weather Records on 9 March 1966

478 weather records were set or tied worldwide on 9 March 1966. Highest significance: San Juan de Los Llanos, MX.

Key Facts for 9 March 1966

On 9 March 1966, 478 weather records were set or tied at long-record stations worldwide.
178 were record highs and 98 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 465 daily.
San Juan de Los Llanos set a monthly record daily precipitation of 41.9 mm (1.6 in) on 9 March 1966.
Across 169 earlier years (1798 to 2026) the same calendar date averaged 484 records.

Record Map

478 stations

478 station records on 9 March 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 March 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
San Juan de Los Llanos	Mexico	Record daily precipitation	41.9 mm (1.6 in)	66 of 100 (Major)
Mc Minnville	United States	Record daily precipitation	40.6 mm (1.6 in)	56 of 100 (Notable)
Portland Rfc City	United States	Record daily precipitation	39.4 mm (1.6 in)	54 of 100 (Notable)
Aiyansh	Canada	Record daily snowfall	39.6 cm (15.6 in)	53 of 100 (Notable)
Izana	Spain	Record daily precipitation	80.6 mm (3.2 in)	52 of 100 (Notable)
Fazenda Sobradinho	Brazil	Record daily precipitation	72.4 mm (2.9 in)	46 of 100 (Notable)
Priest Rvr Exp STN	United States	Record daily precipitation	48.3 mm (1.9 in)	45 of 100 (Notable)
Headworks Portland Wtr B	United States	Record daily precipitation	77.2 mm (3.0 in)	45 of 100 (Notable)
Ariel Dam	United States	Record daily precipitation	76.2 mm (3.0 in)	44 of 100 (Notable)
Telkwa	Canada	Record daily snowfall	16.8 cm (6.6 in)	43 of 100 (Notable)
Aiyansh	Canada	Record daily precipitation	39.6 mm (1.6 in)	42 of 100 (Notable)
Estacada 2 SE	United States	Record daily precipitation	61.0 mm (2.4 in)	41 of 100 (Notable)
Maracanau	Brazil	Record daily precipitation	72.3 mm (2.8 in)	40 of 100 (Notable)
Assiniboia	Canada	Record high maximum temperature	11.1 C (52.0 F)	39 of 100 (Notable)
Timber	United States	Record daily precipitation	86.4 mm (3.4 in)	39 of 100 (Notable)
Bandon 2 NNE	United States	Record daily precipitation	60.5 mm (2.4 in)	36 of 100 (Notable)
Summit	United States	Record daily precipitation	65.5 mm (2.6 in)	36 of 100 (Notable)
Annex Creek	United States	Record daily snowfall	53.3 cm (21.0 in)	35 of 100 (Notable)
Assiniboia	Canada	Record high minimum temperature	1.1 C (34.0 F)	34 of 100 (Routine)
Hillsboro	United States	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Kelso	United States	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Tiruvangadi	India	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Gaylord	United States	Record high maximum temperature	8.9 C (48.0 F)	33 of 100 (Routine)
Molalla	United States	Record daily precipitation	47.5 mm (1.9 in)	33 of 100 (Routine)
Oregon City	United States	Record daily precipitation	43.2 mm (1.7 in)	33 of 100 (Routine)
Bellingham 2 N	United States	Record daily precipitation	36.8 mm (1.4 in)	33 of 100 (Routine)
Kenai AP	United States	Record low maximum temperature	-12.2 C (10.0 F)	33 of 100 (Routine)
Darrington Rs	United States	Record daily precipitation	50.8 mm (2.0 in)	31 of 100 (Routine)
Pomeroy	United States	Record high minimum temperature	9.4 C (48.9 F)	31 of 100 (Routine)
Detroit	United States	Record daily precipitation	50.3 mm (2.0 in)	30 of 100 (Routine)
Longview	United States	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Summerland Cda	Canada	Record high minimum temperature	7.8 C (46.0 F)	29 of 100 (Routine)
Sandpoint Exp STN	United States	Record daily precipitation	41.1 mm (1.6 in)	29 of 100 (Routine)
Corvallis State UNIV	United States	Record daily precipitation	42.4 mm (1.7 in)	29 of 100 (Routine)
Elkton 3 SW	United States	Record daily precipitation	55.6 mm (2.2 in)	29 of 100 (Routine)
Camden 3 W	United States	Record low minimum temperature	-6.1 C (21.0 F)	29 of 100 (Routine)
Chodavaram	India	Record daily precipitation	51.0 mm (2.0 in)	28 of 100 (Routine)
Powers	United States	Record daily precipitation	71.4 mm (2.8 in)	28 of 100 (Routine)
Bremerton	United States	Record daily precipitation	51.3 mm (2.0 in)	28 of 100 (Routine)
Seward AP	United States	Record low maximum temperature	-11.1 C (12.0 F)	28 of 100 (Routine)
Huichapan	Mexico	Record low maximum temperature	15.0 C (59.0 F)	27 of 100 (Routine)
Shelton	United States	Record daily precipitation	57.4 mm (2.3 in)	27 of 100 (Routine)
Prentice #2	United States	Record high maximum temperature	11.7 C (53.1 F)	27 of 100 (Routine)
Drain	United States	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Pine Ridge	United States	Record high minimum temperature	1.7 C (35.1 F)	26 of 100 (Routine)
Sheboygan	United States	Record high maximum temperature	8.3 C (46.9 F)	26 of 100 (Routine)
Salem AP (McNary Field)	United States	Record daily precipitation	47.5 mm (1.9 in)	26 of 100 (Routine)
Cuitzeo	Mexico	Record low maximum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Tacambaro	Mexico	Record low maximum temperature	22.2 C (72.0 F)	25 of 100 (Routine)
Svyatoy Nos;Cape(Closed)	Russia	Record low minimum temperature	-23.1 C (-9.6 F)	25 of 100 (Routine)
Velikie Luki	Russia	Record high minimum temperature	1.5 C (34.7 F)	25 of 100 (Routine)
Crescent City 3 NNW	United States	Record daily precipitation	58.4 mm (2.3 in)	25 of 100 (Routine)
Ishpeming	United States	Record high maximum temperature	10.6 C (51.1 F)	25 of 100 (Routine)
O'Neill	United States	Record high minimum temperature	2.2 C (36.0 F)	25 of 100 (Routine)
Caroleen	United States	Record low minimum temperature	-7.8 C (18.0 F)	25 of 100 (Routine)
Willamina	United States	Record daily precipitation	64.8 mm (2.6 in)	25 of 100 (Routine)
Minocqua	United States	Record high maximum temperature	11.7 C (53.1 F)	25 of 100 (Routine)
Barras	Brazil	Record daily precipitation	92.6 mm (3.6 in)	24 of 100 (Routine)
Rhinelander	United States	Record high maximum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Tomahawk Spirit Rsvr	United States	Record high maximum temperature	9.4 C (48.9 F)	24 of 100 (Routine)

Counts by Type and Timescale

478 records

Records set or tied on 9 March 1966 by type: Highest daily maximum 64, Lowest daily maximum 47, Highest daily minimum 114, Lowest daily minimum 51, Heaviest daily rainfall 188, Heaviest daily snowfall 7, Deepest snow cover 7.

Records on 9 March 1966 by type
Record type	Records
Highest daily maximum	64
Lowest daily maximum	47
Highest daily minimum	114
Lowest daily minimum	51
Heaviest daily rainfall	188
Heaviest daily snowfall	7
Deepest snow cover	7

Records on 9 March 1966 by timescale: all-time 0, monthly 13, daily 465.

How Much Records Were Beaten By

373 broken records

Margins by which the 373 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 294.0. Ties are not counted.

Top 20 by Significance

9 March 1966

Top 20 records on 9 March 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 March 1966	San Juan de Los Llanos, MX	monthly rain	41.9 mm (1.6 in)	26.2 mm (1.0 in)	40 years	66 of 100 (Major)
9 March 1966	Mc Minnville, US	daily rain	40.6 mm (1.6 in)	24.1 mm (0.9 in)	68 years	56 of 100 (Notable)
9 March 1966	Portland Rfc City, US	daily rain	39.4 mm (1.6 in)	15.3 mm (0.6 in)	88 years	54 of 100 (Notable)
9 March 1966	Aiyansh, CA	daily snowfall	39.6 cm (15.6 in)	29.4 cm (11.6 in)	31 years	53 of 100 (Notable)
9 March 1966	Izana, ES	daily rain	80.6 mm (3.2 in)	75.3 mm (3.0 in)	29 years	52 of 100 (Notable)
9 March 1966	Fazenda Sobradinho, BR	daily rain	72.4 mm (2.9 in)	63.7 mm (2.5 in)	12 years	46 of 100 (Notable)
9 March 1966	Priest Rvr Exp STN, US	monthly rain	48.3 mm (1.9 in)	13.2 mm (0.5 in)	15 years	45 of 100 (Notable)
9 March 1966	Headworks Portland Wtr B, US	daily rain	77.2 mm (3.0 in)	43.9 mm (1.7 in)	8 years	45 of 100 (Notable)
9 March 1966	Ariel Dam, US	monthly rain	76.2 mm (3.0 in)	24.4 mm (1.0 in)	17 years	44 of 100 (Notable)
9 March 1966	Telkwa, CA	daily snowfall	16.8 cm (6.6 in)	10.4 cm (4.1 in)	13 years	43 of 100 (Notable)
9 March 1966	Aiyansh, CA	daily rain	39.6 mm (1.6 in)	17.5 mm (0.7 in)	36 years	42 of 100 (Notable)
9 March 1966	Estacada 2 SE, US	daily rain	61.0 mm (2.4 in)	32.0 mm (1.3 in)	19 years	41 of 100 (Notable)
9 March 1966	Maracanau, BR	daily rain	72.3 mm (2.8 in)	41.3 mm (1.6 in)	28 years	40 of 100 (Notable)
9 March 1966	Assiniboia, CA	daily high max	11.1 C (52.0 F)	17.2 C (31.0 F)	48 years	39 of 100 (Notable)
9 March 1966	Timber, US	monthly rain	86.4 mm (3.4 in)	18.1 mm (0.7 in)	34 years	39 of 100 (Notable)
9 March 1966	Bandon 2 NNE, US	daily rain	60.5 mm (2.4 in)	27.2 mm (1.1 in)	12 years	36 of 100 (Notable)
9 March 1966	Summit, US	daily rain	65.5 mm (2.6 in)	33.7 mm (1.3 in)	12 years	36 of 100 (Notable)
9 March 1966	Annex Creek, US	daily snowfall	53.3 cm (21.0 in)	20.3 cm (8.0 in)	40 years	35 of 100 (Notable)
9 March 1966	Assiniboia, CA	daily high min	1.1 C (34.0 F)	16.1 C (29.0 F)	48 years	34 of 100 (Routine)
9 March 1966	Hillsboro, US	daily rain	36.6 mm (1.4 in)	15.8 mm (0.6 in)	28 years	34 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

1798 to 1966

Records set or tied on this calendar date in each year from 1798 to 1966. 1966 had 478 records.

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

Records on 03-09 in each year
Year	Records
1798	1
1807	1
1808	2
1811	3
1813	2
1814	1
1815	1
1824	1
1834	1
1839	1
1840	1
1845	3
1846	1
1847	1
1849	1
1850	2
1855	1
1858	1
1860	1
1862	2
1863	2
1864	3
1866	1
1867	1
1869	1
1871	2
1872	1
1878	1
1880	2
1881	2
1882	3
1883	1
1885	1
1886	3
1888	1
1890	9
1891	4
1892	6
1893	6
1895	1
1896	3
1897	5
1898	2
1899	2
1901	3
1902	9
1903	29
1904	8
1905	7
1906	11
1907	6
1908	36
1909	14
1910	21
1911	35
1912	25
1913	100
1914	66
1915	39
1916	53
1917	52
1918	32
1919	57
1920	23
1921	89
1922	31
1923	148
1924	104
1925	211
1926	133
1927	107
1928	187
1929	210
1930	114
1931	387
1932	1,604
1933	136
1934	266
1935	288
1936	350
1937	172
1938	209
1939	400
1940	263
1941	366
1942	453
1943	679
1944	685
1945	107
1946	249
1947	249
1948	857
1949	436
1950	382
1951	777
1952	266
1953	338
1954	689
1955	629
1956	452
1957	547
1958	534
1959	138
1960	1,155
1961	416
1962	552
1963	349
1964	1,148
1965	305
1966	478
1967	731
1968	771
1969	858
1970	403
1971	457
1972	957
1973	930
1974	1,694
1975	639
1976	635
1977	1,418
1978	952
1979	856
1980	444
1981	1,199
1982	879
1983	996
1984	1,365
1985	710
1986	965
1987	1,043
1988	743
1989	1,504
1990	1,140
1991	447
1992	1,377
1993	658
1994	1,897
1995	1,910
1996	3,236
1997	759
1998	1,710
1999	1,369
2000	2,384
2001	838
2002	1,514
2003	1,120
2004	1,162
2005	937
2006	1,129
2007	634
2008	1,201
2009	1,110
2010	1,409
2011	958
2012	909
2013	1,015
2014	982
2015	655
2016	1,285
2017	678
2018	435
2019	901
2020	759
2021	746
2022	1,209
2023	1,119
2024	536
2025	656
2026	1,050

Download the Data

Data for records on 1966-03-09: 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).

Margin	Records
0 to 50	362
50 to 100	4
100 to 150	4
150 to 200	1
200 to 250	1
250 to 300	1