Weather Records on 29 May 1917

43 weather records were set or tied worldwide on 29 May 1917. Highest significance: Jena Sternwarte, DE.

Key Facts for 29 May 1917

On 29 May 1917, 43 weather records were set or tied at long-record stations worldwide.
19 were record highs and 19 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 39 daily.
Jena Sternwarte set a daily record precipitation of 30.3 mm (1.2 in) on 29 May 1917.
Across 167 earlier years (1794 to 2026) the same calendar date averaged 425 records.

Record Map

43 stations

43 station records on 29 May 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 29 May 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jena Sternwarte	Germany	Record daily precipitation	30.3 mm (1.2 in)	36 of 100 (Notable)
Vanersborg	Sweden	Record high maximum temperature	28.0 C (82.4 F)	24 of 100 (Routine)
Vestervig	Denmark	Record high maximum temperature	27.2 C (81.0 F)	22 of 100 (Routine)
Swift Current	Canada	Record low minimum temperature	-6.7 C (19.9 F)	20 of 100 (Routine)
Mackay Post Office	Australia	Record daily precipitation	20.8 mm (0.8 in)	19 of 100 (Routine)
Middletown 4 W	United States	Record low maximum temperature	10.0 C (50.0 F)	19 of 100 (Routine)
Concord	United States	Record low maximum temperature	7.2 C (45.0 F)	19 of 100 (Routine)
Blue Hill Coop	United States	Record daily precipitation	31.2 mm (1.2 in)	17 of 100 (Routine)
Chatham	Canada	Record low minimum temperature	0.6 C (33.1 F)	16 of 100 (Routine)
Portland	United States	Record low maximum temperature	7.2 C (45.0 F)	16 of 100 (Routine)
Tranebjerg	Denmark	Record high maximum temperature	23.8 C (74.8 F)	15 of 100 (Routine)
Jonkoping	Sweden	Record high maximum temperature	27.0 C (80.6 F)	15 of 100 (Routine)
Skara 1	Sweden	Record high maximum temperature	28.5 C (83.3 F)	15 of 100 (Routine)
Buffalo	United States	Record low maximum temperature	9.4 C (48.9 F)	15 of 100 (Routine)
State College	United States	Record low maximum temperature	11.1 C (52.0 F)	15 of 100 (Routine)
Harnosand	Sweden	Record high maximum temperature	22.5 C (72.5 F)	14 of 100 (Routine)
Stockholm	Sweden	Record high minimum temperature	13.0 C (55.4 F)	14 of 100 (Routine)
Sveg	Sweden	Record high maximum temperature	25.1 C (77.2 F)	12 of 100 (Routine)
Jonkoping	Sweden	Record high minimum temperature	12.0 C (53.6 F)	11 of 100 (Routine)
Orebro	Sweden	Record high maximum temperature	27.0 C (80.6 F)	11 of 100 (Routine)
Portland	United States	Record daily precipitation	27.7 mm (1.1 in)	11 of 100 (Routine)
Vastervik	Sweden	Record high minimum temperature	11.5 C (52.7 F)	9 of 100 (Routine)
Gavle	Sweden	Record high maximum temperature	27.0 C (80.6 F)	9 of 100 (Routine)
Umea	Sweden	Record high maximum temperature	24.0 C (75.2 F)	9 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record high maximum temperature	27.2 C (81.0 F)	8 of 100 (Routine)
Halmstad	Sweden	Record high maximum temperature	27.0 C (80.6 F)	8 of 100 (Routine)
Setauket Strong	United States	Record low maximum temperature	12.2 C (54.0 F)	8 of 100 (Routine)
Bad Muskau	Germany	Record daily precipitation	7.4 mm (0.29 in)	7 of 100 (Routine)
Uppsala_Aut	Sweden	Record high minimum temperature	14.0 C (57.2 F)	7 of 100 (Routine)
Northfield	United States	Record low maximum temperature	7.8 C (46.0 F)	7 of 100 (Routine)
Stockholm	Sweden	Record high maximum temperature	26.5 C (79.7 F)	6 of 100 (Routine)
Calgary Int'l A	Canada	Record low maximum temperature	5.6 C (42.1 F)	5 of 100 (Routine)
Gavle	Sweden	Record high minimum temperature	14.0 C (57.2 F)	5 of 100 (Routine)
Port Arthur	Canada	Record low maximum temperature	10.0 C (50.0 F)	3 of 100 (Routine)
Gunnedah Pool	Australia	Record low maximum temperature	14.4 C (57.9 F)	2 of 100 (Routine)
Qu'appelle	Canada	Record low minimum temperature	-3.9 C (25.0 F)	2 of 100 (Routine)
St Albans	Canada	Record low maximum temperature	11.1 C (52.0 F)	2 of 100 (Routine)
Jokkmokk	Sweden	Record high minimum temperature	7.0 C (44.6 F)	2 of 100 (Routine)
San Diego Wbo	United States	Record low maximum temperature	16.1 C (61.0 F)	2 of 100 (Routine)
Blue Hill Coop	United States	Record low maximum temperature	7.2 C (45.0 F)	2 of 100 (Routine)
Anticosti SW Point	Canada	Record low minimum temperature	0.0 C (32.0 F)	1 of 100 (Routine)
Yarmouth	Canada	Record low maximum temperature	7.2 C (45.0 F)	1 of 100 (Routine)
Morgantown 1	United States	Record low minimum temperature	3.9 C (39.0 F)	1 of 100 (Routine)

Counts by Type and Timescale

43 records

Records set or tied on 29 May 1917 by type: Highest daily maximum 13, Lowest daily maximum 14, Highest daily minimum 6, Lowest daily minimum 5, Heaviest daily rainfall 5.

Records on 29 May 1917 by type
Record type	Records
Highest daily maximum	13
Lowest daily maximum	14
Highest daily minimum	6
Lowest daily minimum	5
Heaviest daily rainfall	5
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 29 May 1917 by timescale: all-time 0, monthly 4, daily 39.

How Much Records Were Beaten By

31 broken records

Margins by which the 31 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 12.2. Ties are not counted.

Top 20 by Significance

29 May 1917

Top 20 records on 29 May 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 May 1917	Jena Sternwarte, DE	daily rain	30.3 mm (1.2 in)	2.3 mm (0.09 in)	77 years	36 of 100 (Notable)
29 May 1917	Vanersborg, SE	monthly high max	28.0 C (82.4 F)	1.5 C (2.7 F)	28 years	24 of 100 (Routine)
29 May 1917	Vestervig, DK	monthly high max	27.2 C (81.0 F)	0.4 C (0.7 F)	28 years	22 of 100 (Routine)
29 May 1917	Swift Current, CA	daily low min	-6.7 C (19.9 F)	4.5 C (8.1 F)	24 years	20 of 100 (Routine)
29 May 1917	Mackay Post Office, AU	daily rain	20.8 mm (0.8 in)	12.2 mm (0.5 in)	23 years	19 of 100 (Routine)
29 May 1917	Middletown 4 W, US	daily low max	10.0 C (50.0 F)	3.3 C (5.9 F)	32 years	19 of 100 (Routine)
29 May 1917	Concord, US	daily low max	7.2 C (45.0 F)	3.4 C (6.1 F)	32 years	19 of 100 (Routine)
29 May 1917	Blue Hill Coop, US	daily rain	31.2 mm (1.2 in)	8.1 mm (0.32 in)	22 years	17 of 100 (Routine)
29 May 1917	Chatham, CA	daily low min	0.6 C (33.1 F)	0.5 C (0.9 F)	37 years	16 of 100 (Routine)
29 May 1917	Portland, US	daily low max	7.2 C (45.0 F)	2.2 C (4.0 F)	29 years	16 of 100 (Routine)
29 May 1917	Tranebjerg, DK	daily high max	23.8 C (74.8 F)	1.0 C (1.8 F)	31 years	15 of 100 (Routine)
29 May 1917	Jonkoping, SE	daily high max	27.0 C (80.6 F)	1.5 C (2.7 F)	31 years	15 of 100 (Routine)
29 May 1917	Skara 1, SE	monthly high max	28.5 C (83.3 F)	0.5 C (0.9 F)	6 years	15 of 100 (Routine)
29 May 1917	Buffalo, US	daily low max	9.4 C (48.9 F)	1.2 C (2.2 F)	32 years	15 of 100 (Routine)
29 May 1917	State College, US	daily low max	11.1 C (52.0 F)	1.7 C (3.1 F)	32 years	15 of 100 (Routine)
29 May 1917	Harnosand, SE	daily high max	22.5 C (72.5 F)	0.5 C (0.9 F)	34 years	14 of 100 (Routine)
29 May 1917	Stockholm, SE	daily high min	13.0 C (55.4 F)	0.5 C (0.9 F)	34 years	14 of 100 (Routine)
29 May 1917	Sveg, SE	daily high max	25.1 C (77.2 F)	0.6 C (1.1 F)	27 years	12 of 100 (Routine)
29 May 1917	Jonkoping, SE	daily high min	12.0 C (53.6 F)	1.0 C (1.8 F)	19 years	11 of 100 (Routine)
29 May 1917	Orebro, SE	daily high max	27.0 C (80.6 F)	2.0 C (3.6 F)	14 years	11 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

1794 to 1917

Records set or tied on this calendar date in each year from 1794 to 1917. 1917 had 43 records.

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

Records on 05-29 in each year
Year	Records
1794	1
1817	1
1818	1
1832	1
1834	1
1836	2
1844	1
1847	2
1852	1
1854	1
1858	1
1860	2
1862	1
1864	2
1865	3
1867	1
1868	1
1869	2
1870	1
1871	2
1875	1
1876	1
1881	2
1882	3
1883	1
1884	3
1885	1
1886	1
1887	1
1888	3
1889	3
1890	1
1891	1
1892	5
1893	5
1894	4
1895	1
1896	1
1897	3
1898	3
1899	6
1900	2
1901	13
1902	14
1903	5
1904	3
1905	7
1906	23
1907	16
1908	26
1909	6
1910	14
1911	26
1912	32
1913	24
1914	40
1915	17
1916	27
1917	43
1918	38
1919	92
1920	33
1921	170
1922	62
1923	103
1924	137
1925	84
1926	155
1927	290
1928	104
1929	331
1930	252
1931	429
1932	228
1933	346
1934	753
1935	114
1936	420
1937	311
1938	316
1939	309
1940	156
1941	629
1942	531
1943	246
1944	258
1945	326
1946	281
1947	1,298
1948	420
1949	347
1950	359
1951	493
1952	413
1953	501
1954	269
1955	454
1956	512
1957	251
1958	455
1959	352
1960	259
1961	608
1962	894
1963	378
1964	537
1965	455
1966	357
1967	562
1968	579
1969	762
1970	410
1971	885
1972	609
1973	517
1974	623
1975	599
1976	975
1977	458
1978	707
1979	750
1980	920
1981	601
1982	1,170
1983	1,266
1984	1,871
1985	1,006
1986	840
1987	1,119
1988	1,132
1989	874
1990	1,135
1991	1,387
1992	1,551
1993	558
1994	658
1995	929
1996	1,177
1997	1,119
1998	1,228
1999	863
2000	1,354
2001	958
2002	594
2003	1,164
2004	835
2005	904
2006	1,438
2007	1,246
2008	784
2009	618
2010	995
2011	1,540
2012	962
2013	731
2014	605
2015	462
2016	511
2017	732
2018	1,386
2019	929
2020	937
2021	854
2022	698
2023	392
2024	618
2025	578
2026	788

Download the Data

Data for records on 1917-05-29: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 2	21
2 to 4	7
4 to 6	1
6 to 8	0
8 to 10	1
10 to 12	0
12 to 14	1