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Built 2026-10-19 (19 October 2026)

Weather Records on 12 August 1903

14 weather records were set or tied worldwide on 12 August 1903. Highest significance: Kalmar_D, SE.

Key Facts for 12 August 1903

  • On 12 August 1903, 14 weather records were set or tied at long-record stations worldwide.
  • 0 were record highs and 11 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 14 daily.
  • Kalmar_D set a daily record precipitation of 25.8 mm (1.0 in) on 12 August 1903.
  • Across 166 earlier years (1793 to 2026) the same calendar date averaged 450 records.

Record Map

14 stations
Weather records on 12 August 1903 14 station records on 12 August 1903 are marked on the map, coloured by record type.
14 station records on 12 August 1903 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 12 August 1903: highest significance records shown on the map
StationCountryTypeValueSignificance
Kalmar_DSwedenRecord daily precipitation25.8 mm (1.0 in)29 of 100 (Routine)
Jacksonville Wb CityUnited StatesRecord daily precipitation50.3 mm (2.0 in)24 of 100 (Routine)
StratfordCanadaRecord low minimum temperature4.4 C (39.9 F)23 of 100 (Routine)
ArmaghUnited KingdomRecord low minimum temperature6.2 C (43.2 F)16 of 100 (Routine)
Wilmington Wb CityUnited StatesRecord daily precipitation33.8 mm (1.3 in)16 of 100 (Routine)
TranebjergDenmarkRecord low maximum temperature13.6 C (56.5 F)13 of 100 (Routine)
Stornoway AirportUnited KingdomRecord low minimum temperature4.4 C (39.9 F)13 of 100 (Routine)
Cape Otway LighthouseAustraliaRecord low maximum temperature11.1 C (52.0 F)12 of 100 (Routine)
HalifaxCanadaRecord low maximum temperature15.6 C (60.1 F)11 of 100 (Routine)
SydneyCanadaRecord low maximum temperature17.2 C (63.0 F)9 of 100 (Routine)
Milwaukee Wb CityUnited StatesRecord low maximum temperature18.9 C (66.0 F)9 of 100 (Routine)
Cleveland 2717 EuclidUnited StatesRecord low maximum temperature18.3 C (64.9 F)4 of 100 (Routine)
PeterboroughCanadaRecord low maximum temperature19.4 C (66.9 F)0 of 100 (Routine)
Milwaukee Wb CityUnited StatesRecord low minimum temperature11.7 C (53.1 F)0 of 100 (Routine)

Counts by Type and Timescale

14 records
Records on 12 August 1903 by type Records set or tied on 12 August 1903 by type: Lowest daily maximum 7, Lowest daily minimum 4, Heaviest daily rainfall 3. 02468Highest daily maximum: 0Lowest daily maximum: 7Highest daily minimum: 0Lowest daily minimum: 4Heaviest daily rainfall: 3Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 12 August 1903 by type: Lowest daily maximum 7, Lowest daily minimum 4, Heaviest daily rainfall 3.
Records on 12 August 1903 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum7
Highest daily minimum0
Lowest daily minimum4
Heaviest daily rainfall3
Heaviest daily snowfall0
Deepest snow cover0
Records on 12 August 1903 by timescale Records on 12 August 1903 by timescale: all-time 0, monthly 0, daily 14. 051015all-time: 0monthly: 0daily: 14all-timemonthlydaily
Records on 12 August 1903 by timescale: all-time 0, monthly 0, daily 14.
Records on 12 August 1903 by timescale
TimescaleRecords
all-time0
monthly0
daily14

How Much Records Were Beaten By

12 broken records
Histogram of margins by which records were beaten on 12 August 1903 Margins by which the 12 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 22.9. Ties are not counted. 0358100 to 5: 95 to 10: 010 to 15: 215 to 20: 020 to 25: 10 to 55 to 1010 to 1515 to 2020 to 25
Margins by which the 12 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 22.9. Ties are not counted.
Histogram of margins by which records were beaten on 12 August 1903
MarginRecords
0 to 59
5 to 100
10 to 152
15 to 200
20 to 251

Top 20 by Significance

12 August 1903
Top 14 records on 12 August 1903 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
12 August 1903Kalmar_D, SEdaily rain25.8 mm (1.0 in)12.5 mm (0.5 in)7 years29 of 100 (Routine)
12 August 1903Jacksonville Wb City, USdaily rain50.3 mm (2.0 in)22.9 mm (0.9 in)24 years24 of 100 (Routine)
12 August 1903Stratford, CAdaily low min4.4 C (39.9 F)4.5 C (8.1 F)34 years23 of 100 (Routine)
12 August 1903Armagh, GBdaily low min6.2 C (43.2 F)0.1 C (0.2 F)33 years16 of 100 (Routine)
12 August 1903Wilmington Wb City, USdaily rain33.8 mm (1.3 in)12.5 mm (0.5 in)24 years16 of 100 (Routine)
12 August 1903Tranebjerg, DKdaily low max13.6 C (56.5 F)0.7 C (1.3 F)29 years13 of 100 (Routine)
12 August 1903Stornoway Airport, GBdaily low min4.4 C (39.9 F)1.2 C (2.2 F)17 years13 of 100 (Routine)
12 August 1903Cape Otway Lighthouse, AUdaily low max11.1 C (52.0 F)0.6 C (1.1 F)20 years12 of 100 (Routine)
12 August 1903Halifax, CAdaily low max15.6 C (60.1 F)2.7 C (4.9 F)1 year11 of 100 (Routine)
12 August 1903Sydney, CAdaily low max17.2 C (63.0 F)0.6 C (1.1 F)19 years9 of 100 (Routine)
12 August 1903Milwaukee Wb City, USdaily low max18.9 C (66.0 F)1.1 C (2.0 F)14 years9 of 100 (Routine)
12 August 1903Cleveland 2717 Euclid, USdaily low max18.3 C (64.9 F)0.6 C (1.1 F)0 years4 of 100 (Routine)
12 August 1903Peterborough, CAdaily low max (Tie)19.4 C (66.9 F)tie0 years0 of 100 (Routine)
12 August 1903Milwaukee Wb City, USdaily low min (Tie)11.7 C (53.1 F)tie0 years0 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 08-12 in each year Records set or tied on this calendar date in each year from 1793 to 1903. 1903 had 14 records. 05001,0001,5002,0001793: 11796: 11811: 21814: 11815: 11825: 11843: 11851: 11854: 11855: 21856: 11861: 11864: 31865: 11867: 11868: 11871: 21872: 11873: 11874: 21875: 31876: 21879: 11881: 21883: 11884: 11885: 11887: 21888: 21889: 41890: 41891: 41892: 21893: 11894: 11895: 61896: 21897: 41898: 11899: 101900: 11901: 51902: 91903: 141904: 131905: 161906: 81907: 81908: 311909: 421910: 161911: 331912: 401913: 391914: 261915: 461916: 311917: 1341918: 371919: 421920: 261921: 1741922: 711923: 891924: 2671925: 1501926: 1541927: 1451928: 1731929: 2761930: 5011931: 7081932: 4181933: 2711934: 4711935: 4081936: 5911937: 3561938: 2371939: 2821940: 5451941: 4811942: 2571943: 5231944: 5951945: 2951946: 6551947: 7291948: 3841949: 4691950: 4421951: 3571952: 5331953: 2271954: 9691955: 5901956: 2651957: 3841958: 4061959: 3881960: 7071961: 3811962: 4661963: 5591964: 1,3461965: 9771966: 7771967: 1,1351968: 4441969: 6291970: 4221971: 4861972: 4731973: 4421974: 5601975: 5931976: 4951977: 7471978: 5711979: 1,1921980: 6921981: 6651982: 7891983: 9231984: 6651985: 9351986: 6151987: 9351988: 1,5181989: 8271990: 7271991: 7261992: 1,1341993: 9361994: 8611995: 1,6541996: 1,3361997: 1,3631998: 1,2151999: 1,3252000: 7412001: 8552002: 1,3452003: 1,7522004: 1,8722005: 1,0852006: 8742007: 1,2092008: 9702009: 8142010: 1,9072011: 9032012: 9102013: 4272014: 7872015: 7572016: 1,2902017: 5332018: 5712019: 6952020: 7302021: 9802022: 6162023: 7792024: 6592025: 6392026: 8491793187218941911192819451962197919962013
Records set or tied on this calendar date in each year from 1793 to 1903. 1903 had 14 records.
Counts for years before the ledger starts come from the same station rules.
Records on 08-12 in each year
YearRecords
17931
17961
18112
18141
18151
18251
18431
18511
18541
18552
18561
18611
18643
18651
18671
18681
18712
18721
18731
18742
18753
18762
18791
18812
18831
18841
18851
18872
18882
18894
18904
18914
18922
18931
18941
18956
18962
18974
18981
189910
19001
19015
19029
190314
190413
190516
19068
19078
190831
190942
191016
191133
191240
191339
191426
191546
191631
1917134
191837
191942
192026
1921174
192271
192389
1924267
1925150
1926154
1927145
1928173
1929276
1930501
1931708
1932418
1933271
1934471
1935408
1936591
1937356
1938237
1939282
1940545
1941481
1942257
1943523
1944595
1945295
1946655
1947729
1948384
1949469
1950442
1951357
1952533
1953227
1954969
1955590
1956265
1957384
1958406
1959388
1960707
1961381
1962466
1963559
19641,346
1965977
1966777
19671,135
1968444
1969629
1970422
1971486
1972473
1973442
1974560
1975593
1976495
1977747
1978571
19791,192
1980692
1981665
1982789
1983923
1984665
1985935
1986615
1987935
19881,518
1989827
1990727
1991726
19921,134
1993936
1994861
19951,654
19961,336
19971,363
19981,215
19991,325
2000741
2001855
20021,345
20031,752
20041,872
20051,085
2006874
20071,209
2008970
2009814
20101,907
2011903
2012910
2013427
2014787
2015757
20161,290
2017533
2018571
2019695
2020730
2021980
2022616
2023779
2024659
2025639
2026849

Download the Data

  • Data for records on 1903-08-12: 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).