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Built 2026-10-19 (19 October 2026)

Weather Records on 11 August 1903

12 weather records were set or tied worldwide on 11 August 1903. Highest significance: Clanwilliam (Pol), ZA.

Key Facts for 11 August 1903

  • On 11 August 1903, 12 weather records were set or tied at long-record stations worldwide.
  • 2 were record highs and 6 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 12 daily.
  • Clanwilliam (Pol) set a daily record precipitation of 8.6 mm (0.34 in) on 11 August 1903.
  • Across 161 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

12 stations
Weather records on 11 August 1903 12 station records on 11 August 1903 are marked on the map, coloured by record type.
12 station records on 11 August 1903 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 11 August 1903: highest significance records shown on the map
StationCountryTypeValueSignificance
Clanwilliam (Pol)South AfricaRecord daily precipitation8.6 mm (0.34 in)11 of 100 (Routine)
WoodstockCanadaRecord low maximum temperature19.4 C (66.9 F)10 of 100 (Routine)
Baltimore Customs HouseUnited StatesRecord daily precipitation30.5 mm (1.2 in)10 of 100 (Routine)
Wagga Wagga (Kooringal)AustraliaRecord high minimum temperature8.9 C (48.0 F)9 of 100 (Routine)
Toledo BladeUnited StatesRecord low maximum temperature21.7 C (71.1 F)9 of 100 (Routine)
Sydney (Observatory Hill)AustraliaRecord high minimum temperature13.1 C (55.6 F)8 of 100 (Routine)
Kingston Queens UCanadaRecord daily precipitation19.8 mm (0.8 in)5 of 100 (Routine)
Dublin Phoenix ParkIrelandRecord low minimum temperature4.4 C (39.9 F)4 of 100 (Routine)
Hastings Post OfficeAustraliaRecord daily precipitation6.1 mm (0.24 in)2 of 100 (Routine)
Milwaukee Wb CityUnited StatesRecord low minimum temperature12.2 C (54.0 F)2 of 100 (Routine)
Winnipeg St Johns CollCanadaRecord low minimum temperature5.0 C (41.0 F)1 of 100 (Routine)
ChathamCanadaRecord low minimum temperature8.9 C (48.0 F)1 of 100 (Routine)

Counts by Type and Timescale

12 records
Records on 11 August 1903 by type Records set or tied on 11 August 1903 by type: Lowest daily maximum 2, Highest daily minimum 2, Lowest daily minimum 4, Heaviest daily rainfall 4. 01234Highest daily maximum: 0Lowest daily maximum: 2Highest daily minimum: 2Lowest daily minimum: 4Heaviest daily rainfall: 4Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 11 August 1903 by type: Lowest daily maximum 2, Highest daily minimum 2, Lowest daily minimum 4, Heaviest daily rainfall 4.
Records on 11 August 1903 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum2
Highest daily minimum2
Lowest daily minimum4
Heaviest daily rainfall4
Heaviest daily snowfall0
Deepest snow cover0
Records on 11 August 1903 by timescale Records on 11 August 1903 by timescale: all-time 0, monthly 0, daily 12. 051015all-time: 0monthly: 0daily: 12all-timemonthlydaily
Records on 11 August 1903 by timescale: all-time 0, monthly 0, daily 12.
Records on 11 August 1903 by timescale
TimescaleRecords
all-time0
monthly0
daily12

How Much Records Were Beaten By

8 broken records
Histogram of margins by which records were beaten on 11 August 1903 Margins by which the 8 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 4.6. Ties are not counted. 01230 to 1: 31 to 2: 32 to 3: 13 to 4: 04 to 5: 10 to 11 to 22 to 33 to 44 to 5
Margins by which the 8 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 4.6. Ties are not counted.
Histogram of margins by which records were beaten on 11 August 1903
MarginRecords
0 to 13
1 to 23
2 to 31
3 to 40
4 to 51

Top 20 by Significance

11 August 1903
Top 12 records on 11 August 1903 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
11 August 1903Clanwilliam (Pol), ZAdaily rain8.6 mm (0.34 in)1.0 mm (0.04 in)25 years11 of 100 (Routine)
11 August 1903Woodstock, CAdaily low max19.4 C (66.9 F)1.2 C (2.2 F)13 years10 of 100 (Routine)
11 August 1903Baltimore Customs House, USdaily rain30.5 mm (1.2 in)4.6 mm (0.18 in)15 years10 of 100 (Routine)
11 August 1903Wagga Wagga (Kooringal), AUdaily high min8.9 C (48.0 F)1.1 C (2.0 F)11 years9 of 100 (Routine)
11 August 1903Toledo Blade, USdaily low max21.7 C (71.1 F)0.5 C (0.9 F)18 years9 of 100 (Routine)
11 August 1903Sydney (Observatory Hill), AUdaily high min13.1 C (55.6 F)0.5 C (0.9 F)8 years8 of 100 (Routine)
11 August 1903Kingston Queens U, CAdaily rain19.8 mm (0.8 in)2.3 mm (0.09 in)5 years5 of 100 (Routine)
11 August 1903Dublin Phoenix Park, IEdaily low min4.4 C (39.9 F)0.5 C (0.9 F)0 years4 of 100 (Routine)
11 August 1903Hastings Post Office, AUdaily rain (Tie)6.1 mm (0.24 in)tie22 years2 of 100 (Routine)
11 August 1903Milwaukee Wb City, USdaily low min (Tie)12.2 C (54.0 F)tie20 years2 of 100 (Routine)
11 August 1903Winnipeg St Johns Coll, CAdaily low min (Tie)5.0 C (41.0 F)tie14 years1 of 100 (Routine)
11 August 1903Chatham, CAdaily low min (Tie)8.9 C (48.0 F)tie14 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

1793 to 1903
Records on 08-11 in each year Records set or tied on this calendar date in each year from 1793 to 1903. 1903 had 12 records. 01,0002,0003,0001793: 11796: 11811: 11815: 21838: 11839: 11841: 11851: 11855: 11858: 11861: 21862: 11863: 11864: 61865: 11866: 61869: 41871: 11875: 11879: 21881: 11883: 11885: 11888: 11889: 41890: 41891: 11892: 41893: 11894: 11895: 21896: 51897: 31898: 21899: 31900: 41901: 41902: 131903: 121904: 191905: 91906: 61907: 81908: 101909: 411910: 91911: 241912: 461913: 431914: 261915: 271916: 641917: 2171918: 291919: 181920: 541921: 2011922: 981923: 801924: 1491925: 2191926: 1401927: 1901928: 1741929: 3541930: 4711931: 4531932: 2811933: 4161934: 6201935: 4991936: 5411937: 3561938: 3151939: 3891940: 3591941: 8071942: 3901943: 3451944: 9361945: 4011946: 4191947: 7091948: 3061949: 4711950: 3201951: 2961952: 4171953: 2831954: 5361955: 3191956: 4571957: 3051958: 4941959: 3371960: 4611961: 4291962: 6621963: 4931964: 6771965: 7931966: 1,0371967: 1,0711968: 6191969: 5331970: 5261971: 7111972: 8231973: 4511974: 5961975: 7531976: 5291977: 8451978: 4331979: 7971980: 9291981: 6451982: 1,2321983: 1,0951984: 8221985: 8041986: 5631987: 8851988: 1,1191989: 9831990: 7601991: 8221992: 9281993: 8401994: 1,1731995: 1,3241996: 1,1471997: 1,5121998: 1,2321999: 1,1522000: 9242001: 8112002: 1,1522003: 1,6012004: 1,4782005: 1,0312006: 8962007: 1,4282008: 9452009: 8362010: 2,2892011: 1,1062012: 9532013: 4702014: 5562015: 6962016: 1,3402017: 6192018: 8612019: 7582020: 6882021: 8342022: 6612023: 7572024: 6432025: 7222026: 7651793187118991916193319501967198420012018
Records set or tied on this calendar date in each year from 1793 to 1903. 1903 had 12 records.
Counts for years before the ledger starts come from the same station rules.
Records on 08-11 in each year
YearRecords
17931
17961
18111
18152
18381
18391
18411
18511
18551
18581
18612
18621
18631
18646
18651
18666
18694
18711
18751
18792
18811
18831
18851
18881
18894
18904
18911
18924
18931
18941
18952
18965
18973
18982
18993
19004
19014
190213
190312
190419
19059
19066
19078
190810
190941
19109
191124
191246
191343
191426
191527
191664
1917217
191829
191918
192054
1921201
192298
192380
1924149
1925219
1926140
1927190
1928174
1929354
1930471
1931453
1932281
1933416
1934620
1935499
1936541
1937356
1938315
1939389
1940359
1941807
1942390
1943345
1944936
1945401
1946419
1947709
1948306
1949471
1950320
1951296
1952417
1953283
1954536
1955319
1956457
1957305
1958494
1959337
1960461
1961429
1962662
1963493
1964677
1965793
19661,037
19671,071
1968619
1969533
1970526
1971711
1972823
1973451
1974596
1975753
1976529
1977845
1978433
1979797
1980929
1981645
19821,232
19831,095
1984822
1985804
1986563
1987885
19881,119
1989983
1990760
1991822
1992928
1993840
19941,173
19951,324
19961,147
19971,512
19981,232
19991,152
2000924
2001811
20021,152
20031,601
20041,478
20051,031
2006896
20071,428
2008945
2009836
20102,289
20111,106
2012953
2013470
2014556
2015696
20161,340
2017619
2018861
2019758
2020688
2021834
2022661
2023757
2024643
2025722
2026765

Download the Data

  • Data for records on 1903-08-11: 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 . Last revised (2026-10-15).