Weather Records on 17 May 1950

371 weather records were set or tied worldwide on 17 May 1950. Highest significance: Pirie (Bos), ZA.

Key Facts for 17 May 1950

On 17 May 1950, 371 weather records were set or tied at long-record stations worldwide.
27 were record highs and 94 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 26 monthly and 345 daily.
Pirie (Bos) set a monthly record daily precipitation of 100.3 mm (3.9 in) on 17 May 1950.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 435 records.

Record Map

371 stations

371 station records on 17 May 1950 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 1950: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pirie (Bos)	South Africa	Record daily precipitation	100.3 mm (3.9 in)	75 of 100 (Major)
Cata (Bos)	South Africa	Record daily precipitation	114.3 mm (4.5 in)	68 of 100 (Major)
Yardley Chase	South Africa	Record daily precipitation	30.5 mm (1.2 in)	62 of 100 (Major)
Tarkastad (Pol)	South Africa	Record daily precipitation	44.2 mm (1.7 in)	61 of 100 (Major)
Isidinge (Bos)	South Africa	Record daily precipitation	126.2 mm (5.0 in)	59 of 100 (Notable)
Kologha (Bos)	South Africa	Record daily precipitation	82.8 mm (3.3 in)	59 of 100 (Notable)
Steynsburg	South Africa	Record daily precipitation	38.9 mm (1.5 in)	59 of 100 (Notable)
Rocklands	South Africa	Record daily precipitation	45.2 mm (1.8 in)	58 of 100 (Notable)
Fogo	Canada	Record daily precipitation	46.5 mm (1.8 in)	57 of 100 (Notable)
Izeleni (Bos)	South Africa	Record daily precipitation	98.6 mm (3.9 in)	57 of 100 (Notable)
Hofmeyer (Mun)	South Africa	Record daily precipitation	40.9 mm (1.6 in)	57 of 100 (Notable)
Sterkstroom (Pol)	South Africa	Record daily precipitation	43.7 mm (1.7 in)	56 of 100 (Notable)
Mtn View 91	United States	Record daily precipitation	125.5 mm (4.9 in)	56 of 100 (Notable)
Huxley	South Africa	Record daily precipitation	44.5 mm (1.8 in)	54 of 100 (Notable)
Katberg (Bos)	South Africa	Record daily precipitation	71.4 mm (2.8 in)	53 of 100 (Notable)
Waterfall	South Africa	Record daily precipitation	87.9 mm (3.5 in)	52 of 100 (Notable)
Waterland	South Africa	Record daily precipitation	29.0 mm (1.1 in)	52 of 100 (Notable)
Fort Beaufort	South Africa	Record daily precipitation	53.6 mm (2.1 in)	51 of 100 (Notable)
Cyferfontein	South Africa	Record daily precipitation	25.9 mm (1.0 in)	51 of 100 (Notable)
Buxton (Bos)	South Africa	Record daily precipitation	79.8 mm (3.1 in)	50 of 100 (Notable)
Fountain Head	South Africa	Record daily precipitation	49.5 mm (1.9 in)	49 of 100 (Notable)
Fort Cunynghame (Bos)	South Africa	Record daily precipitation	62.2 mm (2.4 in)	49 of 100 (Notable)
Contest	South Africa	Record daily precipitation	29.0 mm (1.1 in)	49 of 100 (Notable)
Cullendale	South Africa	Record daily precipitation	36.8 mm (1.4 in)	48 of 100 (Notable)
Kubusie (Bos)	South Africa	Record daily precipitation	78.7 mm (3.1 in)	48 of 100 (Notable)
Elliot	South Africa	Record daily precipitation	64.8 mm (2.6 in)	48 of 100 (Notable)
Seymour (Mag)	South Africa	Record daily precipitation	48.8 mm (1.9 in)	47 of 100 (Notable)
Mill Holme	South Africa	Record daily precipitation	61.2 mm (2.4 in)	47 of 100 (Notable)
Tafelberg Hall	South Africa	Record daily precipitation	41.4 mm (1.6 in)	47 of 100 (Notable)
Waverley	South Africa	Record daily precipitation	52.1 mm (2.1 in)	47 of 100 (Notable)
Uitkyk	South Africa	Record daily precipitation	43.2 mm (1.7 in)	47 of 100 (Notable)
Hogsback (Bos)	South Africa	Record daily precipitation	57.2 mm (2.3 in)	46 of 100 (Notable)
Bloemhof	South Africa	Record daily precipitation	51.3 mm (2.0 in)	46 of 100 (Notable)
Makapuu Point 724	United States	Record daily precipitation	71.9 mm (2.8 in)	46 of 100 (Notable)
Teresina	Brazil	Record daily precipitation	90.0 mm (3.5 in)	45 of 100 (Notable)
Telpoort	South Africa	Record daily precipitation	27.9 mm (1.1 in)	45 of 100 (Notable)
Olaa 92	United States	Record daily precipitation	97.3 mm (3.8 in)	45 of 100 (Notable)
Bettiah	India	Record daily precipitation	43.2 mm (1.7 in)	44 of 100 (Notable)
Lorraine	South Africa	Record daily precipitation	50.8 mm (2.0 in)	44 of 100 (Notable)
Nkobongo (Agr)	South Africa	Record daily precipitation	49.3 mm (1.9 in)	44 of 100 (Notable)
Ewa Plantation 741	United States	Record daily precipitation	45.2 mm (1.8 in)	44 of 100 (Notable)
Kieskamahoek (Pol)	South Africa	Record daily precipitation	56.4 mm (2.2 in)	43 of 100 (Notable)
Wolfridge (Bos)	South Africa	Record daily precipitation	96.5 mm (3.8 in)	42 of 100 (Notable)
Wellwood	South Africa	Record daily precipitation	38.6 mm (1.5 in)	42 of 100 (Notable)
Saltora	India	Record daily precipitation	38.1 mm (1.5 in)	41 of 100 (Notable)
Kareehoek"Kareefontein"	South Africa	Record daily precipitation	65.0 mm (2.6 in)	41 of 100 (Notable)
Grootdam	South Africa	Record daily precipitation	42.4 mm (1.7 in)	41 of 100 (Notable)
Quilimane	South Africa	Record daily precipitation	25.1 mm (1.0 in)	41 of 100 (Notable)
Daveyhurst Mulwarrie	Australia	Record daily precipitation	27.2 mm (1.1 in)	39 of 100 (Notable)
Grahamstown	South Africa	Record daily precipitation	52.1 mm (2.1 in)	39 of 100 (Notable)
Fort Fordyce (Bos)	South Africa	Record daily precipitation	121.7 mm (4.8 in)	39 of 100 (Notable)
Gordonville	South Africa	Record daily precipitation	49.3 mm (1.9 in)	39 of 100 (Notable)
Edenburg (Pol)	South Africa	Record daily precipitation	25.9 mm (1.0 in)	39 of 100 (Notable)
Mount Coke (Bos)	South Africa	Record daily precipitation	90.2 mm (3.6 in)	38 of 100 (Notable)
Jahanabad	India	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Dontsa	South Africa	Record daily precipitation	81.3 mm (3.2 in)	37 of 100 (Notable)
Beaverlodge Cda	Canada	Record daily precipitation	27.4 mm (1.1 in)	36 of 100 (Notable)
Albertvale	South Africa	Record daily precipitation	35.3 mm (1.4 in)	36 of 100 (Notable)
Manor Holme	South Africa	Record daily precipitation	53.8 mm (2.1 in)	36 of 100 (Notable)
Invergwali	South Africa	Record daily precipitation	39.1 mm (1.5 in)	35 of 100 (Notable)

Counts by Type and Timescale

371 records

Records set or tied on 17 May 1950 by type: Highest daily maximum 7, Lowest daily maximum 74, Highest daily minimum 20, Lowest daily minimum 20, Heaviest daily rainfall 246, Heaviest daily snowfall 4.

Records on 17 May 1950 by type
Record type	Records
Highest daily maximum	7
Lowest daily maximum	74
Highest daily minimum	20
Lowest daily minimum	20
Heaviest daily rainfall	246
Heaviest daily snowfall	4
Deepest snow cover	0

Records on 17 May 1950 by timescale: all-time 0, monthly 26, daily 345.

How Much Records Were Beaten By

326 broken records

Margins by which the 326 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.6. Ties are not counted.

Top 20 by Significance

17 May 1950

Top 20 records on 17 May 1950 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1950	Pirie (Bos), ZA	monthly rain	100.3 mm (3.9 in)	41.1 mm (1.6 in)	64 years	75 of 100 (Major)
17 May 1950	Cata (Bos), ZA	monthly rain	114.3 mm (4.5 in)	57.7 mm (2.3 in)	44 years	68 of 100 (Major)
17 May 1950	Yardley Chase, ZA	daily rain	30.5 mm (1.2 in)	25.9 mm (1.0 in)	61 years	62 of 100 (Major)
17 May 1950	Tarkastad (Pol), ZA	daily rain	44.2 mm (1.7 in)	30.7 mm (1.2 in)	61 years	61 of 100 (Major)
17 May 1950	Isidinge (Bos), ZA	monthly rain	126.2 mm (5.0 in)	41.1 mm (1.6 in)	15 years	59 of 100 (Notable)
17 May 1950	Kologha (Bos), ZA	monthly rain	82.8 mm (3.3 in)	30.5 mm (1.2 in)	15 years	59 of 100 (Notable)
17 May 1950	Steynsburg, ZA	daily rain	38.9 mm (1.5 in)	26.5 mm (1.0 in)	68 years	59 of 100 (Notable)
17 May 1950	Rocklands, ZA	daily rain	45.2 mm (1.8 in)	36.8 mm (1.4 in)	44 years	58 of 100 (Notable)
17 May 1950	Fogo, CA	monthly rain	46.5 mm (1.8 in)	10.9 mm (0.4 in)	73 years	57 of 100 (Notable)
17 May 1950	Izeleni (Bos), ZA	monthly rain	98.6 mm (3.9 in)	46.5 mm (1.8 in)	10 years	57 of 100 (Notable)
17 May 1950	Hofmeyer (Mun), ZA	daily rain	40.9 mm (1.6 in)	37.1 mm (1.5 in)	43 years	57 of 100 (Notable)
17 May 1950	Sterkstroom (Pol), ZA	daily rain	43.7 mm (1.7 in)	27.7 mm (1.1 in)	44 years	56 of 100 (Notable)
17 May 1950	Mtn View 91, US	daily rain	125.5 mm (4.9 in)	73.4 mm (2.9 in)	40 years	56 of 100 (Notable)
17 May 1950	Huxley, ZA	daily rain	44.5 mm (1.8 in)	40.2 mm (1.6 in)	36 years	54 of 100 (Notable)
17 May 1950	Katberg (Bos), ZA	monthly rain	71.4 mm (2.8 in)	18.1 mm (0.7 in)	62 years	53 of 100 (Notable)
17 May 1950	Waterfall, ZA	daily rain	87.9 mm (3.5 in)	83.6 mm (3.3 in)	32 years	52 of 100 (Notable)
17 May 1950	Waterland, ZA	daily rain	29.0 mm (1.1 in)	29.0 mm (1.1 in)	33 years	52 of 100 (Notable)
17 May 1950	Fort Beaufort, ZA	daily rain	53.6 mm (2.1 in)	38.6 mm (1.5 in)	15 years	51 of 100 (Notable)
17 May 1950	Cyferfontein, ZA	daily rain	25.9 mm (1.0 in)	25.9 mm (1.0 in)	36 years	51 of 100 (Notable)
17 May 1950	Buxton (Bos), ZA	monthly rain	79.8 mm (3.1 in)	29.0 mm (1.1 in)	5 years	50 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

1802 to 1950

Records set or tied on this calendar date in each year from 1802 to 1950. 1950 had 371 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 1950-05-17: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	258
20 to 40	49
40 to 60	16
60 to 80	2
80 to 100	1