Weather Records on 30 May 1917

42 weather records were set or tied worldwide on 30 May 1917. Highest significance: Innisfail, AU.

Key Facts for 30 May 1917

On 30 May 1917, 42 weather records were set or tied at long-record stations worldwide.
13 were record highs and 20 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 40 daily.
Innisfail set a daily record precipitation of 124.2 mm (4.9 in) on 30 May 1917.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 441 records.

Record Map

42 stations

42 station records on 30 May 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Innisfail	Australia	Record daily precipitation	124.2 mm (4.9 in)	43 of 100 (Notable)
Jonkoping	Sweden	Record high minimum temperature	15.4 C (59.7 F)	24 of 100 (Routine)
Saint John	Canada	Record low maximum temperature	5.6 C (42.1 F)	23 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record high minimum temperature	14.5 C (58.1 F)	21 of 100 (Routine)
Przhevalsk	Kyrgyzstan	Record daily precipitation	21.4 mm (0.8 in)	20 of 100 (Routine)
Edmonton	Canada	Record low minimum temperature	-4.4 C (24.1 F)	19 of 100 (Routine)
Calgary Int'l A	Canada	Record low minimum temperature	-3.3 C (26.1 F)	19 of 100 (Routine)
Stony Mountain	Canada	Record low minimum temperature	-5.0 C (23.0 F)	19 of 100 (Routine)
St Albans	Canada	Record low minimum temperature	-8.9 C (16.0 F)	18 of 100 (Routine)
Gorlitz	Germany	Record daily precipitation	19.7 mm (0.8 in)	18 of 100 (Routine)
Port Douglas - Warner St	Australia	Record daily precipitation	13.5 mm (0.5 in)	17 of 100 (Routine)
Qu'appelle	Canada	Record low minimum temperature	-4.4 C (24.1 F)	16 of 100 (Routine)
Whitehead	Canada	Record daily precipitation	30.5 mm (1.2 in)	16 of 100 (Routine)
Kirov	Russia	Record daily precipitation	18.4 mm (0.7 in)	16 of 100 (Routine)
Walgett Council Depot	Australia	Record high maximum temperature	23.9 C (75.0 F)	14 of 100 (Routine)
Minnedosa	Canada	Record low minimum temperature	-6.1 C (21.0 F)	14 of 100 (Routine)
Sandvig	Denmark	Record high minimum temperature	12.3 C (54.1 F)	14 of 100 (Routine)
Uppsala_Aut	Sweden	Record high minimum temperature	14.2 C (57.6 F)	14 of 100 (Routine)
Swift Current	Canada	Record low minimum temperature	-5.6 C (21.9 F)	13 of 100 (Routine)
Fredericton Unb	Canada	Record low maximum temperature	7.2 C (45.0 F)	13 of 100 (Routine)
Boras	Sweden	Record high minimum temperature	13.0 C (55.4 F)	12 of 100 (Routine)
Dubuque River	United States	Record daily precipitation	16.3 mm (0.6 in)	10 of 100 (Routine)
Visby_Flygplats	Sweden	Record high maximum temperature	24.8 C (76.6 F)	9 of 100 (Routine)
Herberton White St	Australia	Record daily precipitation	9.1 mm (0.36 in)	8 of 100 (Routine)
Yarmouth	Canada	Record low maximum temperature	8.9 C (48.0 F)	8 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record high minimum temperature	13.5 C (56.3 F)	8 of 100 (Routine)
Vanersborg	Sweden	Record high minimum temperature	13.7 C (56.7 F)	8 of 100 (Routine)
Huron Rgnl AP	United States	Record low maximum temperature	13.9 C (57.0 F)	8 of 100 (Routine)
Cardwell Marine Pde	Australia	Record daily precipitation	15.7 mm (0.6 in)	7 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	9.0 C (48.2 F)	5 of 100 (Routine)
Sydney	Canada	Record low maximum temperature	6.7 C (44.1 F)	4 of 100 (Routine)
Winnipeg St Johns Coll	Canada	Record low minimum temperature	-3.9 C (25.0 F)	3 of 100 (Routine)
London South	Canada	Record low minimum temperature	1.7 C (35.1 F)	3 of 100 (Routine)
Middletown 4 W	United States	Record low maximum temperature	13.9 C (57.0 F)	3 of 100 (Routine)
Fort National	Algeria	Record low minimum temperature	7.0 C (44.6 F)	2 of 100 (Routine)
Edmonton	Canada	Record low maximum temperature	13.9 C (57.0 F)	1 of 100 (Routine)
Chatham	Canada	Record low maximum temperature	8.9 C (48.0 F)	1 of 100 (Routine)
Halifax	Canada	Record low maximum temperature	7.2 C (45.0 F)	1 of 100 (Routine)
Orebro	Sweden	Record high minimum temperature	14.0 C (57.2 F)	1 of 100 (Routine)
Gavle	Sweden	Record high minimum temperature	13.5 C (56.3 F)	1 of 100 (Routine)
Stockholm	Sweden	Record high maximum temperature	26.0 C (78.8 F)	1 of 100 (Routine)
Blue Hill Coop	United States	Record low minimum temperature	5.0 C (41.0 F)	1 of 100 (Routine)

Counts by Type and Timescale

42 records

Records set or tied on 30 May 1917 by type: Highest daily maximum 3, Lowest daily maximum 9, Highest daily minimum 10, Lowest daily minimum 11, Heaviest daily rainfall 9.

Records on 30 May 1917 by type
Record type	Records
Highest daily maximum	3
Lowest daily maximum	9
Highest daily minimum	10
Lowest daily minimum	11
Heaviest daily rainfall	9
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 May 1917 by timescale: all-time 0, monthly 2, daily 40.

How Much Records Were Beaten By

30 broken records

Margins by which the 30 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 86.1. Ties are not counted.

Top 20 by Significance

30 May 1917

Top 20 records on 30 May 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1917	Innisfail, AU	daily rain	124.2 mm (4.9 in)	86.1 mm (3.4 in)	26 years	43 of 100 (Notable)
30 May 1917	Jonkoping, SE	monthly high min	15.4 C (59.7 F)	1.4 C (2.5 F)	25 years	24 of 100 (Routine)
30 May 1917	Saint John, CA	daily low max	5.6 C (42.1 F)	3.8 C (6.8 F)	32 years	23 of 100 (Routine)
30 May 1917	Vasteras-Hasslo, SE	monthly high min	14.5 C (58.1 F)	0.5 C (0.9 F)	25 years	21 of 100 (Routine)
30 May 1917	Przhevalsk, KG	daily rain	21.4 mm (0.8 in)	11.3 mm (0.4 in)	23 years	20 of 100 (Routine)
30 May 1917	Edmonton, CA	daily low min	-4.4 C (24.1 F)	3.3 C (5.9 F)	26 years	19 of 100 (Routine)
30 May 1917	Calgary Int'l A, CA	daily low min	-3.3 C (26.1 F)	3.3 C (5.9 F)	26 years	19 of 100 (Routine)
30 May 1917	Stony Mountain, CA	daily low min	-5.0 C (23.0 F)	2.2 C (4.0 F)	37 years	19 of 100 (Routine)
30 May 1917	St Albans, CA	daily low min	-8.9 C (16.0 F)	3.9 C (7.0 F)	27 years	18 of 100 (Routine)
30 May 1917	Gorlitz, DE	daily rain	19.7 mm (0.8 in)	3.6 mm (0.14 in)	34 years	18 of 100 (Routine)
30 May 1917	Port Douglas - Warner St, AU	daily rain	13.5 mm (0.5 in)	6.1 mm (0.24 in)	26 years	17 of 100 (Routine)
30 May 1917	Qu'appelle, CA	daily low min	-4.4 C (24.1 F)	2.2 C (4.0 F)	28 years	16 of 100 (Routine)
30 May 1917	Whitehead, CA	daily rain	30.5 mm (1.2 in)	7.6 mm (0.30 in)	19 years	16 of 100 (Routine)
30 May 1917	Kirov, RU	daily rain	18.4 mm (0.7 in)	2.8 mm (0.11 in)	25 years	16 of 100 (Routine)
30 May 1917	Walgett Council Depot, AU	daily high max	23.9 C (75.0 F)	0.6 C (1.1 F)	32 years	14 of 100 (Routine)
30 May 1917	Minnedosa, CA	daily low min	-6.1 C (21.0 F)	1.7 C (3.1 F)	27 years	14 of 100 (Routine)
30 May 1917	Sandvig, DK	daily high min	12.3 C (54.1 F)	0.3 C (0.5 F)	31 years	14 of 100 (Routine)
30 May 1917	Uppsala_Aut, SE	daily high min	14.2 C (57.6 F)	1.7 C (3.1 F)	12 years	14 of 100 (Routine)
30 May 1917	Swift Current, CA	daily low min	-5.6 C (21.9 F)	1.2 C (2.2 F)	26 years	13 of 100 (Routine)
30 May 1917	Fredericton Unb, CA	daily low max	7.2 C (45.0 F)	3.4 C (6.1 F)	10 years	13 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

1818 to 1917

Records set or tied on this calendar date in each year from 1818 to 1917. 1917 had 42 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1917-05-30: 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	29
20 to 40	0
40 to 60	0
60 to 80	0
80 to 100	1