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Built 2026-10-15 (15 October 2026)

Weather Records on 21 August 1903

6 weather records were set or tied worldwide on 21 August 1903. Highest significance: Uppsala_Aut, SE.

Key Facts for 21 August 1903

  • On 21 August 1903, 6 weather records were set or tied at long-record stations worldwide.
  • 0 were record highs and 1 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 6 daily.
  • Uppsala_Aut set a daily record precipitation of 13.9 mm (0.5 in) on 21 August 1903.
  • Across 164 earlier years (1800 to 2025) the same calendar date averaged 447 records.

Record Map

6 stations
Weather records on 21 August 1903 6 station records on 21 August 1903 are marked on the map, coloured by record type.
6 station records on 21 August 1903 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 21 August 1903: highest significance records shown on the map
StationCountryTypeValueSignificance
Uppsala_AutSwedenRecord daily precipitation13.9 mm (0.5 in)20 of 100 (Routine)
PortlandAustraliaRecord daily precipitation23.9 mm (0.9 in)20 of 100 (Routine)
StockholmSwedenRecord daily precipitation17.1 mm (0.7 in)16 of 100 (Routine)
Anticosti SW PointCanadaRecord daily precipitation16.8 mm (0.7 in)8 of 100 (Routine)
Cape NorthumberlandAustraliaRecord daily precipitation13.2 mm (0.5 in)2 of 100 (Routine)
GalwayIrelandRecord low maximum temperature16.7 C (62.1 F)1 of 100 (Routine)

Counts by Type and Timescale

6 records
Records on 21 August 1903 by type Records set or tied on 21 August 1903 by type: Lowest daily maximum 1, Heaviest daily rainfall 5. 0246Highest daily maximum: 0Lowest daily maximum: 1Highest daily minimum: 0Lowest daily minimum: 0Heaviest daily rainfall: 5Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 21 August 1903 by type: Lowest daily maximum 1, Heaviest daily rainfall 5.
Records on 21 August 1903 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum1
Highest daily minimum0
Lowest daily minimum0
Heaviest daily rainfall5
Heaviest daily snowfall0
Deepest snow cover0
Records on 21 August 1903 by timescale Records on 21 August 1903 by timescale: all-time 0, monthly 0, daily 6. 0246all-time: 0monthly: 0daily: 6all-timemonthlydaily
Records on 21 August 1903 by timescale: all-time 0, monthly 0, daily 6.
Records on 21 August 1903 by timescale
TimescaleRecords
all-time0
monthly0
daily6

How Much Records Were Beaten By

4 broken records
Histogram of margins by which records were beaten on 21 August 1903 Margins by which the 4 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 11.2. Ties are not counted. 001110 to 2: 02 to 4: 14 to 6: 16 to 8: 18 to 10: 010 to 12: 10 to 22 to 44 to 66 to 88 to 1010 to 12
Margins by which the 4 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 11.2. Ties are not counted.
Histogram of margins by which records were beaten on 21 August 1903
MarginRecords
0 to 20
2 to 41
4 to 61
6 to 81
8 to 100
10 to 121

Top 20 by Significance

21 August 1903
Top 6 records on 21 August 1903 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
21 August 1903Uppsala_Aut, SEdaily rain13.9 mm (0.5 in)3.2 mm (0.13 in)63 years20 of 100 (Routine)
21 August 1903Portland, AUdaily rain23.9 mm (0.9 in)11.2 mm (0.4 in)13 years20 of 100 (Routine)
21 August 1903Stockholm, SEdaily rain17.1 mm (0.7 in)6.4 mm (0.25 in)12 years16 of 100 (Routine)
21 August 1903Anticosti SW Point, CAdaily rain16.8 mm (0.7 in)4.9 mm (0.19 in)5 years8 of 100 (Routine)
21 August 1903Cape Northumberland, AUdaily rain (Tie)13.2 mm (0.5 in)tie22 years2 of 100 (Routine)
21 August 1903Galway, IEdaily low max (Tie)16.7 C (62.1 F)tie11 years1 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

1800 to 1903
Records on 08-21 in each year Records set or tied on this calendar date in each year from 1800 to 1903. 1903 had 6 records. 05001,0001,5002,0001800: 11802: 11804: 11807: 11816: 11818: 11832: 11834: 11839: 31843: 11847: 11849: 31850: 11851: 21863: 11866: 11867: 21870: 31871: 21872: 11873: 11876: 11877: 21879: 21884: 21885: 51886: 11887: 51888: 21889: 31890: 41891: 21893: 41894: 81895: 31896: 21897: 41898: 41899: 71900: 41901: 91902: 81903: 61904: 81905: 41906: 221907: 201908: 131909: 171910: 331911: 191912: 501913: 371914: 241915: 211916: 1061917: 1011918: 2021919: 191920: 591921: 341922: 581923: 1111924: 1351925: 2201926: 2271927: 2281928: 1101929: 2341930: 2971931: 2771932: 2641933: 3281934: 3201935: 3181936: 8071937: 7621938: 2391939: 6301940: 6831941: 1801942: 4151943: 4381944: 3461945: 5441946: 3901947: 9541948: 3051949: 5081950: 9581951: 6991952: 3681953: 3311954: 4971955: 8851956: 7011957: 4901958: 3891959: 7041960: 4901961: 6441962: 4691963: 3381964: 7941965: 4551966: 6611967: 5411968: 1,0141969: 6501970: 3731971: 6601972: 4411973: 4381974: 5641975: 5451976: 7561977: 7641978: 4451979: 7781980: 9041981: 1,0151982: 7691983: 1,4071984: 9751985: 6231986: 1,1661987: 7401988: 8891989: 8281990: 9101991: 8281992: 9571993: 6981994: 9681995: 9621996: 9501997: 1,2911998: 9481999: 7172000: 8612001: 7972002: 9652003: 1,2412004: 1,5852005: 1,0712006: 7972007: 1,8292008: 1,0122009: 1,3192010: 1,1552011: 1,0222012: 9902013: 5132014: 6242015: 6512016: 8902017: 3472018: 8142019: 6252020: 1,1402021: 7602022: 9132023: 1,8142024: 7772025: 1,2321800187018951912192919461963198019972014
Records set or tied on this calendar date in each year from 1800 to 1903. 1903 had 6 records.
Counts for years before the ledger starts come from the same station rules.
Records on 08-21 in each year
YearRecords
18001
18021
18041
18071
18161
18181
18321
18341
18393
18431
18471
18493
18501
18512
18631
18661
18672
18703
18712
18721
18731
18761
18772
18792
18842
18855
18861
18875
18882
18893
18904
18912
18934
18948
18953
18962
18974
18984
18997
19004
19019
19028
19036
19048
19054
190622
190720
190813
190917
191033
191119
191250
191337
191424
191521
1916106
1917101
1918202
191919
192059
192134
192258
1923111
1924135
1925220
1926227
1927228
1928110
1929234
1930297
1931277
1932264
1933328
1934320
1935318
1936807
1937762
1938239
1939630
1940683
1941180
1942415
1943438
1944346
1945544
1946390
1947954
1948305
1949508
1950958
1951699
1952368
1953331
1954497
1955885
1956701
1957490
1958389
1959704
1960490
1961644
1962469
1963338
1964794
1965455
1966661
1967541
19681,014
1969650
1970373
1971660
1972441
1973438
1974564
1975545
1976756
1977764
1978445
1979778
1980904
19811,015
1982769
19831,407
1984975
1985623
19861,166
1987740
1988889
1989828
1990910
1991828
1992957
1993698
1994968
1995962
1996950
19971,291
1998948
1999717
2000861
2001797
2002965
20031,241
20041,585
20051,071
2006797
20071,829
20081,012
20091,319
20101,155
20111,022
2012990
2013513
2014624
2015651
2016890
2017347
2018814
2019625
20201,140
2021760
2022913
20231,814
2024777
20251,232

Download the Data

  • Data for records on 1903-08-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).