Weather Records on 18 August 1924

225 weather records were set or tied worldwide on 18 August 1924. Highest significance: Sarna, SE.

Key Facts for 18 August 1924

On 18 August 1924, 225 weather records were set or tied at long-record stations worldwide.
17 were record highs and 155 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 220 daily.
Sarna set a daily record precipitation of 63.7 mm (2.5 in) on 18 August 1924.
Across 171 earlier years (1797 to 2026) the same calendar date averaged 442 records.

Record Map

225 stations

225 station records on 18 August 1924 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 August 1924: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sarna	Sweden	Record daily precipitation	63.7 mm (2.5 in)	45 of 100 (Notable)
Astoria	United States	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Newport	United States	Record daily precipitation	35.1 mm (1.4 in)	40 of 100 (Notable)
Grundy Ctr	United States	Record daily precipitation	118.9 mm (4.7 in)	39 of 100 (Notable)
Fairmont	United States	Record daily precipitation	105.7 mm (4.2 in)	35 of 100 (Notable)
Heerde	Netherlands	Record daily precipitation	29.8 mm (1.2 in)	31 of 100 (Routine)
Double Island Point Lighthouse	Australia	Record daily precipitation	46.2 mm (1.8 in)	30 of 100 (Routine)
Grand Meadow	United States	Record low maximum temperature	15.6 C (60.1 F)	28 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record daily precipitation	32.2 mm (1.3 in)	25 of 100 (Routine)
Redding Fire STN 2	United States	Record low maximum temperature	19.4 C (66.9 F)	25 of 100 (Routine)
Dubuque River	United States	Record low maximum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Minneapolis Wb Dwtn	United States	Record low maximum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Eau Claire	United States	Record low maximum temperature	18.9 C (66.0 F)	24 of 100 (Routine)
La Crosse Wb City	United States	Record low maximum temperature	16.1 C (61.0 F)	24 of 100 (Routine)
Ukiah	United States	Record low maximum temperature	21.7 C (71.1 F)	23 of 100 (Routine)
St John's	Canada	Record high maximum temperature	26.7 C (80.1 F)	21 of 100 (Routine)
Fayette	United States	Record low maximum temperature	17.2 C (63.0 F)	21 of 100 (Routine)
Grundy Ctr	United States	Record low maximum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
La Crosse Wb City	United States	Record daily precipitation	48.3 mm (1.9 in)	21 of 100 (Routine)
St Cloud State Clg	United States	Record low maximum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Mt Angel	United States	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Portland Rfc City	United States	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
New Westminster	Canada	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Chatillon-Sur-Seine	France	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Prince Albert Road (Sar)	South Africa	Record daily precipitation	6.6 mm (0.26 in)	20 of 100 (Routine)
Port Townsend	United States	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Guelph Oac	Canada	Record low maximum temperature	19.4 C (66.9 F)	20 of 100 (Routine)
Bird Rocks	Canada	Record high minimum temperature	16.7 C (62.1 F)	20 of 100 (Routine)
Milwaukee Wb City	United States	Record low maximum temperature	17.8 C (64.0 F)	20 of 100 (Routine)
Putten (Gld)	Netherlands	Record daily precipitation	22.0 mm (0.9 in)	19 of 100 (Routine)
Bloukrans (Bos)	South Africa	Record daily precipitation	23.4 mm (0.9 in)	19 of 100 (Routine)
Algona	United States	Record daily precipitation	41.9 mm (1.6 in)	19 of 100 (Routine)
Forest City 2 NNE	United States	Record low maximum temperature	18.9 C (66.0 F)	19 of 100 (Routine)
Toledo 3N	United States	Record low maximum temperature	20.6 C (69.1 F)	19 of 100 (Routine)
Collegeville St John's	United States	Record low maximum temperature	15.6 C (60.1 F)	19 of 100 (Routine)
Ashland	United States	Record daily precipitation	8.4 mm (0.33 in)	19 of 100 (Routine)
Anacortes	United States	Record daily precipitation	18.8 mm (0.7 in)	19 of 100 (Routine)
Madison Wb City	United States	Record low maximum temperature	17.8 C (64.0 F)	19 of 100 (Routine)
Meadow Valley Rs	United States	Record low maximum temperature	17.8 C (64.0 F)	19 of 100 (Routine)
Neillsville 3ESE	United States	Record low maximum temperature	17.8 C (64.0 F)	19 of 100 (Routine)
Houston Wb City	United States	Record high minimum temperature	25.6 C (78.1 F)	19 of 100 (Routine)
Salem AP (McNary Field)	United States	Record daily precipitation	10.9 mm (0.4 in)	19 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low minimum temperature	12.8 C (55.0 F)	19 of 100 (Routine)
Coolah (Binnia St)	Australia	Record daily precipitation	22.1 mm (0.9 in)	18 of 100 (Routine)
Redding Fire STN 2	United States	Record daily precipitation	6.4 mm (0.25 in)	18 of 100 (Routine)
Iowa Falls	United States	Record low maximum temperature	19.4 C (66.9 F)	18 of 100 (Routine)
St Peter	United States	Record low maximum temperature	18.9 C (66.0 F)	18 of 100 (Routine)
Dalby Post Office	Australia	Record daily precipitation	6.6 mm (0.26 in)	17 of 100 (Routine)
Lake Moraine	United States	Record high minimum temperature	11.1 C (52.0 F)	17 of 100 (Routine)
Wentworth 2.5 WNW	United States	Record low maximum temperature	20.0 C (68.0 F)	17 of 100 (Routine)
Aberdeen	United States	Record daily precipitation	10.2 mm (0.4 in)	17 of 100 (Routine)
Medford	United States	Record low maximum temperature	18.3 C (64.9 F)	17 of 100 (Routine)
Watertown Wwtp	United States	Record daily precipitation	23.9 mm (0.9 in)	17 of 100 (Routine)
Goldstream Lake	Canada	Record daily precipitation	10.9 mm (0.4 in)	16 of 100 (Routine)
Independence	United States	Record low maximum temperature	21.1 C (70.0 F)	16 of 100 (Routine)
Marshalltown	United States	Record low maximum temperature	19.4 C (66.9 F)	16 of 100 (Routine)
Farmington 3NW	United States	Record low maximum temperature	18.3 C (64.9 F)	16 of 100 (Routine)
New London	United States	Record low maximum temperature	12.8 C (55.0 F)	16 of 100 (Routine)
Bird Island	United States	Record low maximum temperature	20.0 C (68.0 F)	15 of 100 (Routine)
New Ulm 2 SE	United States	Record low maximum temperature	17.8 C (64.0 F)	15 of 100 (Routine)

Counts by Type and Timescale

225 records

Records set or tied on 18 August 1924 by type: Highest daily maximum 10, Lowest daily maximum 90, Highest daily minimum 7, Lowest daily minimum 65, Heaviest daily rainfall 53.

Records on 18 August 1924 by type
Record type	Records
Highest daily maximum	10
Lowest daily maximum	90
Highest daily minimum	7
Lowest daily minimum	65
Heaviest daily rainfall	53
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 August 1924 by timescale: all-time 0, monthly 5, daily 220.

How Much Records Were Beaten By

172 broken records

Margins by which the 172 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 55.4. Ties are not counted.

Top 20 by Significance

18 August 1924

Top 20 records on 18 August 1924 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 August 1924	Sarna, SE	daily rain	63.7 mm (2.5 in)	43.8 mm (1.7 in)	4 years	45 of 100 (Notable)
18 August 1924	Astoria, US	daily rain	34.0 mm (1.3 in)	21.8 mm (0.9 in)	32 years	43 of 100 (Notable)
18 August 1924	Newport, US	daily rain	35.1 mm (1.4 in)	28.0 mm (1.1 in)	8 years	40 of 100 (Notable)
18 August 1924	Grundy Ctr, US	daily rain	118.9 mm (4.7 in)	55.4 mm (2.2 in)	12 years	39 of 100 (Notable)
18 August 1924	Fairmont, US	monthly rain	105.7 mm (4.2 in)	23.1 mm (0.9 in)	19 years	35 of 100 (Notable)
18 August 1924	Heerde, NL	daily rain	29.8 mm (1.2 in)	17.3 mm (0.7 in)	9 years	31 of 100 (Routine)
18 August 1924	Double Island Point Lighthouse, AU	daily rain	46.2 mm (1.8 in)	24.4 mm (1.0 in)	15 years	30 of 100 (Routine)
18 August 1924	Grand Meadow, US	daily low max	15.6 C (60.1 F)	7.2 C (13.0 F)	28 years	28 of 100 (Routine)
18 August 1924	Vasteras-Hasslo, SE	daily rain	32.2 mm (1.3 in)	9.8 mm (0.39 in)	11 years	25 of 100 (Routine)
18 August 1924	Redding Fire STN 2, US	monthly low max	19.4 C (66.9 F)	1.7 C (3.1 F)	27 years	25 of 100 (Routine)
18 August 1924	Dubuque River, US	daily low max	16.7 C (62.1 F)	5.0 C (9.0 F)	26 years	25 of 100 (Routine)
18 August 1924	Minneapolis Wb Dwtn, US	daily low max	16.7 C (62.1 F)	5.5 C (9.9 F)	28 years	24 of 100 (Routine)
18 August 1924	Eau Claire, US	daily low max	18.9 C (66.0 F)	5.0 C (9.0 F)	27 years	24 of 100 (Routine)
18 August 1924	La Crosse Wb City, US	daily low max	16.1 C (61.0 F)	3.9 C (7.0 F)	33 years	24 of 100 (Routine)
18 August 1924	Ukiah, US	daily low max	21.7 C (71.1 F)	5.0 C (9.0 F)	30 years	23 of 100 (Routine)
18 August 1924	St John's, CA	daily high max	26.7 C (80.1 F)	1.1 C (2.0 F)	48 years	21 of 100 (Routine)
18 August 1924	Fayette, US	daily low max	17.2 C (63.0 F)	5.0 C (9.0 F)	25 years	21 of 100 (Routine)
18 August 1924	Grundy Ctr, US	daily low max	18.9 C (66.0 F)	3.9 C (7.0 F)	27 years	21 of 100 (Routine)
18 August 1924	La Crosse Wb City, US	daily rain	48.3 mm (1.9 in)	5.1 mm (0.20 in)	45 years	21 of 100 (Routine)
18 August 1924	St Cloud State Clg, US	daily low max	16.7 C (62.1 F)	4.4 C (7.9 F)	27 years	21 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

1797 to 1924

Records set or tied on this calendar date in each year from 1797 to 1924. 1924 had 225 records.

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

Records on 08-18 in each year
Year	Records
1797	2
1805	1
1816	1
1827	1
1829	1
1830	1
1833	1
1841	1
1844	1
1845	3
1846	1
1847	1
1849	1
1851	1
1852	1
1853	1
1854	2
1855	1
1856	1
1861	1
1864	2
1866	1
1868	2
1869	1
1870	2
1872	1
1873	1
1875	3
1876	1
1878	1
1879	2
1883	3
1885	3
1886	3
1887	3
1888	2
1889	1
1890	1
1891	2
1892	6
1893	4
1894	4
1895	1
1898	4
1899	6
1900	2
1901	10
1902	8
1903	6
1904	8
1905	10
1906	40
1907	7
1908	21
1909	24
1910	16
1911	11
1912	21
1913	43
1914	37
1915	60
1916	71
1917	70
1918	53
1919	34
1920	51
1921	39
1922	129
1923	90
1924	225
1925	300
1926	168
1927	269
1928	141
1929	181
1930	150
1931	241
1932	382
1933	431
1934	638
1935	424
1936	766
1937	308
1938	243
1939	381
1940	434
1941	467
1942	333
1943	738
1944	325
1945	400
1946	416
1947	958
1948	315
1949	393
1950	683
1951	355
1952	405
1953	323
1954	622
1955	795
1956	580
1957	380
1958	580
1959	537
1960	599
1961	415
1962	428
1963	760
1964	443
1965	525
1966	573
1967	623
1968	795
1969	530
1970	597
1971	381
1972	493
1973	734
1974	639
1975	844
1976	917
1977	1,112
1978	854
1979	1,309
1980	771
1981	1,386
1982	563
1983	1,420
1984	600
1985	765
1986	861
1987	1,609
1988	1,351
1989	952
1990	920
1991	533
1992	1,497
1993	706
1994	1,027
1995	1,882
1996	760
1997	1,191
1998	923
1999	888
2000	1,183
2001	1,036
2002	1,306
2003	860
2004	1,050
2005	865
2006	842
2007	1,116
2008	1,265
2009	839
2010	1,167
2011	1,239
2012	1,247
2013	752
2014	751
2015	880
2016	704
2017	565
2018	462
2019	615
2020	1,541
2021	1,118
2022	1,237
2023	1,094
2024	696
2025	455
2026	545

Download the Data

Data for records on 1924-08-18: 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 10	158
10 to 20	7
20 to 30	5
30 to 40	0
40 to 50	1
50 to 60	1