Weather Records on 17 May 1964

417 weather records were set or tied worldwide on 17 May 1964. Highest significance: Deeral, AU.

Key Facts for 17 May 1964

On 17 May 1964, 417 weather records were set or tied at long-record stations worldwide.
308 were record highs and 35 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 414 daily.
Deeral set a daily record precipitation of 127.0 mm (5.0 in) on 17 May 1964.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 434 records.

Record Map

417 stations

417 station records on 17 May 1964 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 1964: highest significance records shown on the map
Station	Country	Type	Value	Significance
Deeral	Australia	Record daily precipitation	127.0 mm (5.0 in)	48 of 100 (Notable)
Mowbray	Australia	Record daily precipitation	51.3 mm (2.0 in)	48 of 100 (Notable)
Cape Agulhas	South Africa	Record daily precipitation	25.0 mm (1.0 in)	46 of 100 (Notable)
Sagar	India	Record daily precipitation	67.3 mm (2.6 in)	45 of 100 (Notable)
Mossman South Alchera Drive	Australia	Record daily precipitation	35.1 mm (1.4 in)	37 of 100 (Notable)
Forbes (Camp Street)	Australia	Record low minimum temperature	-1.7 C (28.9 F)	37 of 100 (Notable)
Villahermosa (Smn)	Mexico	Record daily precipitation	140.0 mm (5.5 in)	34 of 100 (Routine)
Morris	Canada	Record daily precipitation	29.0 mm (1.1 in)	33 of 100 (Routine)
Kluitjeskraal (Bos)	South Africa	Record daily precipitation	35.0 mm (1.4 in)	31 of 100 (Routine)
Mossman Central Mill	Australia	Record daily precipitation	34.8 mm (1.4 in)	30 of 100 (Routine)
Grenfell	Canada	Record high maximum temperature	31.7 C (89.1 F)	30 of 100 (Routine)
Moorcroft 3S	United States	Record high minimum temperature	12.8 C (55.0 F)	30 of 100 (Routine)
Nanjangud	India	Record daily precipitation	46.7 mm (1.8 in)	29 of 100 (Routine)
Tres Piedras	United States	Record high minimum temperature	7.2 C (45.0 F)	29 of 100 (Routine)
Ft Morgan	United States	Record high minimum temperature	15.0 C (59.0 F)	28 of 100 (Routine)
Hatteras	United States	Record low minimum temperature	11.7 C (53.1 F)	28 of 100 (Routine)
Japaratuba	Brazil	Record daily precipitation	74.2 mm (2.9 in)	27 of 100 (Routine)
Riggins	United States	Record high minimum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Saint Francis	United States	Record high minimum temperature	16.1 C (61.0 F)	27 of 100 (Routine)
Imperial	United States	Record high minimum temperature	16.7 C (62.1 F)	27 of 100 (Routine)
Humboldt	Canada	Record high maximum temperature	27.8 C (82.0 F)	26 of 100 (Routine)
Fairfield	United States	Record high maximum temperature	31.7 C (89.1 F)	26 of 100 (Routine)
Oelrichs	United States	Record high minimum temperature	11.1 C (52.0 F)	26 of 100 (Routine)
Pine Ridge	United States	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Logan Utah St UNIV	United States	Record high maximum temperature	30.0 C (86.0 F)	26 of 100 (Routine)
Centennial 1NE	United States	Record high minimum temperature	11.1 C (52.0 F)	26 of 100 (Routine)
Concordia ASOS	United States	Record high maximum temperature	33.3 C (91.9 F)	26 of 100 (Routine)
Scottsbluff W B Heilig Fld AP	United States	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Farias Brito	Brazil	Record daily precipitation	35.0 mm (1.4 in)	25 of 100 (Routine)
Marre-Sale	Russia	Record high maximum temperature	7.4 C (45.3 F)	25 of 100 (Routine)
Beloit	United States	Record high maximum temperature	35.0 C (95.0 F)	25 of 100 (Routine)
Red Cloud	United States	Record high minimum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Grafton	United States	Record high minimum temperature	10.6 C (51.1 F)	25 of 100 (Routine)
Champoton (Smn)	Mexico	Record daily precipitation	45.0 mm (1.8 in)	24 of 100 (Routine)
Challis	United States	Record high minimum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Eskridge	United States	Record high maximum temperature	31.7 C (89.1 F)	24 of 100 (Routine)
Coupeville 1 S	United States	Record low minimum temperature	-0.6 C (30.9 F)	24 of 100 (Routine)
Zamora	Spain	Record high minimum temperature	18.4 C (65.1 F)	23 of 100 (Routine)
Skegness	United Kingdom	Record high maximum temperature	22.2 C (72.0 F)	23 of 100 (Routine)
Bedford	United States	Record high maximum temperature	32.2 C (90.0 F)	23 of 100 (Routine)
Lamoni	United States	Record high maximum temperature	31.7 C (89.1 F)	23 of 100 (Routine)
Minneapolis	United States	Record high maximum temperature	34.4 C (93.9 F)	23 of 100 (Routine)
Beatrice	United States	Record high maximum temperature	33.3 C (91.9 F)	23 of 100 (Routine)
Ogallala	United States	Record high minimum temperature	16.1 C (61.0 F)	23 of 100 (Routine)
Weeping Water	United States	Record high minimum temperature	18.3 C (64.9 F)	23 of 100 (Routine)
Holy Cross	United States	Record low maximum temperature	1.7 C (35.1 F)	23 of 100 (Routine)
Walebing	Australia	Record high maximum temperature	30.0 C (86.0 F)	22 of 100 (Routine)
Salmon Arm	Canada	Record high minimum temperature	10.6 C (51.1 F)	22 of 100 (Routine)
Pte de Chassiron	France	Record high maximum temperature	30.0 C (86.0 F)	22 of 100 (Routine)
McNary 2N	United States	Record high minimum temperature	10.0 C (50.0 F)	22 of 100 (Routine)
New Meadows Rs	United States	Record high minimum temperature	9.4 C (48.9 F)	22 of 100 (Routine)
Quincy	United States	Record high maximum temperature	33.9 C (93.0 F)	22 of 100 (Routine)
Greenfield	United States	Record high maximum temperature	31.7 C (89.1 F)	22 of 100 (Routine)
Fairmont	United States	Record high maximum temperature	32.8 C (91.0 F)	22 of 100 (Routine)
Ft Meade	United States	Record high minimum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Morawa	Australia	Record high maximum temperature	31.1 C (88.0 F)	21 of 100 (Routine)
Merredin Research Station	Australia	Record high maximum temperature	28.9 C (84.0 F)	21 of 100 (Routine)
Nhill	Australia	Record low minimum temperature	-0.3 C (31.5 F)	21 of 100 (Routine)
Madrid - Retiro	Spain	Record high minimum temperature	18.6 C (65.5 F)	21 of 100 (Routine)
Caldwell	United States	Record high minimum temperature	12.2 C (54.0 F)	21 of 100 (Routine)

Counts by Type and Timescale

417 records

Records set or tied on 17 May 1964 by type: Highest daily maximum 154, Lowest daily maximum 18, Highest daily minimum 154, Lowest daily minimum 17, Heaviest daily rainfall 72, Heaviest daily snowfall 2.

Records on 17 May 1964 by type
Record type	Records
Highest daily maximum	154
Lowest daily maximum	18
Highest daily minimum	154
Lowest daily minimum	17
Heaviest daily rainfall	72
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 17 May 1964 by timescale: all-time 0, monthly 3, daily 414.

How Much Records Were Beaten By

312 broken records

Margins by which the 312 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 79.5. Ties are not counted.

Top 20 by Significance

17 May 1964

Top 20 records on 17 May 1964 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1964	Deeral, AU	daily rain	127.0 mm (5.0 in)	79.5 mm (3.1 in)	28 years	48 of 100 (Notable)
17 May 1964	Mowbray, AU	daily rain	51.3 mm (2.0 in)	39.4 mm (1.6 in)	32 years	48 of 100 (Notable)
17 May 1964	Cape Agulhas, ZA	daily rain	25.0 mm (1.0 in)	20.0 mm (0.8 in)	16 years	46 of 100 (Notable)
17 May 1964	Sagar, IN	daily rain	67.3 mm (2.6 in)	38.1 mm (1.5 in)	46 years	45 of 100 (Notable)
17 May 1964	Mossman South Alchera Drive, AU	daily rain	35.1 mm (1.4 in)	21.9 mm (0.9 in)	32 years	37 of 100 (Notable)
17 May 1964	Forbes (Camp Street), AU	daily low min	-1.7 C (28.9 F)	0.6 C (1.1 F)	90 years	37 of 100 (Notable)
17 May 1964	Villahermosa (Smn), MX	monthly rain	140.0 mm (5.5 in)	24.7 mm (1.0 in)	33 years	34 of 100 (Routine)
17 May 1964	Morris, CA	daily rain	29.0 mm (1.1 in)	17.6 mm (0.7 in)	1 year	33 of 100 (Routine)
17 May 1964	Kluitjeskraal (Bos), ZA	daily rain	35.0 mm (1.4 in)	9.6 mm (0.38 in)	59 years	31 of 100 (Routine)
17 May 1964	Mossman Central Mill, AU	daily rain	34.8 mm (1.4 in)	21.3 mm (0.8 in)	32 years	30 of 100 (Routine)
17 May 1964	Grenfell, CA	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	70 years	30 of 100 (Routine)
17 May 1964	Moorcroft 3S, US	daily high min	12.8 C (55.0 F)	3.4 C (6.1 F)	59 years	30 of 100 (Routine)
17 May 1964	Nanjangud, IN	daily rain	46.7 mm (1.8 in)	9.6 mm (0.38 in)	57 years	29 of 100 (Routine)
17 May 1964	Tres Piedras, US	daily high min	7.2 C (45.0 F)	2.2 C (4.0 F)	58 years	29 of 100 (Routine)
17 May 1964	Ft Morgan, US	daily high min	15.0 C (59.0 F)	1.7 C (3.1 F)	62 years	28 of 100 (Routine)
17 May 1964	Hatteras, US	daily low min	11.7 C (53.1 F)	0.5 C (0.9 F)	68 years	28 of 100 (Routine)
17 May 1964	Japaratuba, BR	daily rain	74.2 mm (2.9 in)	22.2 mm (0.9 in)	27 years	27 of 100 (Routine)
17 May 1964	Riggins, US	daily high min	12.8 C (55.0 F)	1.1 C (2.0 F)	63 years	27 of 100 (Routine)
17 May 1964	Saint Francis, US	daily high min	16.1 C (61.0 F)	2.8 C (5.0 F)	56 years	27 of 100 (Routine)
17 May 1964	Imperial, US	daily high min	16.7 C (62.1 F)	1.1 C (2.0 F)	62 years	27 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

1802 to 1964

Records set or tied on this calendar date in each year from 1802 to 1964. 1964 had 417 records.

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

Records on 05-17 in each year
Year	Records
1802	2
1803	1
1808	1
1816	1
1834	1
1837	1
1839	1
1847	2
1848	1
1851	1
1853	1
1855	1
1858	1
1859	1
1861	2
1862	2
1863	2
1864	1
1871	2
1872	2
1873	2
1874	4
1877	1
1878	1
1879	2
1880	1
1881	1
1882	2
1883	3
1885	1
1887	1
1888	2
1889	3
1891	8
1892	4
1893	3
1895	8
1896	2
1897	3
1898	6
1899	7
1900	12
1901	2
1902	3
1903	9
1904	12
1905	10
1906	22
1907	10
1908	5
1909	33
1910	16
1911	30
1912	16
1913	24
1914	24
1915	53
1916	49
1917	18
1918	56
1919	35
1920	46
1921	50
1922	30
1923	95
1924	80
1925	326
1926	133
1927	264
1928	127
1929	168
1930	421
1931	201
1932	288
1933	365
1934	373
1935	341
1936	270
1937	183
1938	340
1939	285
1940	338
1941	408
1942	589
1943	855
1944	521
1945	799
1946	586
1947	249
1948	412
1949	544
1950	371
1951	373
1952	777
1953	441
1954	298
1955	570
1956	1,166
1957	469
1958	331
1959	488
1960	402
1961	291
1962	1,325
1963	368
1964	417
1965	462
1966	489
1967	644
1968	564
1969	638
1970	711
1971	723
1972	610
1973	1,016
1974	1,302
1975	365
1976	426
1977	1,078
1978	872
1979	459
1980	768
1981	940
1982	476
1983	1,326
1984	925
1985	561
1986	921
1987	1,054
1988	1,096
1989	1,307
1990	1,135
1991	1,237
1992	1,025
1993	495
1994	858
1995	1,734
1996	1,706
1997	1,619
1998	1,080
1999	795
2000	825
2001	960
2002	964
2003	1,127
2004	769
2005	784
2006	1,522
2007	742
2008	1,309
2009	1,050
2010	880
2011	1,483
2012	711
2013	739
2014	1,062
2015	824
2016	741
2017	1,302
2018	726
2019	686
2020	496
2021	443
2022	479
2023	385
2024	566
2025	928
2026	745

Download the Data

Data for records on 1964-05-17: 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 10	291
10 to 20	11
20 to 30	7
30 to 40	2
40 to 50	0
50 to 60	0
60 to 70	0
70 to 80	1