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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Weather Records on 18 July 1878

4 weather records were set or tied worldwide on 18 July 1878. Highest significance: Armagh, GB.

Key Facts for 18 July 1878

  • On 18 July 1878, 4 weather records were set or tied at long-record stations worldwide.
  • 3 were record highs and 0 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 4 daily.
  • Armagh set a daily record high minimum temperature of 15.1 C (59.2 F) on 18 July 1878.
  • Across 155 earlier years (1793 to 2025) the same calendar date averaged 462 records.

Record Map

4 stations
Weather records on 18 July 1878 4 station records on 18 July 1878 are marked on the map, coloured by record type.
4 station records on 18 July 1878 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 18 July 1878: highest significance records shown on the map
StationCountryTypeValueSignificance
ArmaghUnited KingdomRecord high minimum temperature15.1 C (59.2 F)16 of 100 (Routine)
Adelaide West TerraceAustraliaRecord daily precipitation21.8 mm (0.9 in)12 of 100 (Routine)
TorontoCanadaRecord high minimum temperature22.2 C (72.0 F)10 of 100 (Routine)
Newark Liberty Intl APUnited StatesRecord high maximum temperature36.1 C (97.0 F)10 of 100 (Routine)

Counts by Type and Timescale

4 records
Records on 18 July 1878 by type Records set or tied on 18 July 1878 by type: Highest daily maximum 1, Highest daily minimum 2, Heaviest daily rainfall 1. 01122Highest daily maximum: 1Lowest daily maximum: 0Highest daily minimum: 2Lowest daily minimum: 0Heaviest daily rainfall: 1Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 18 July 1878 by type: Highest daily maximum 1, Highest daily minimum 2, Heaviest daily rainfall 1.
Records on 18 July 1878 by type
Record typeRecords
Highest daily maximum1
Lowest daily maximum0
Highest daily minimum2
Lowest daily minimum0
Heaviest daily rainfall1
Heaviest daily snowfall0
Deepest snow cover0
Records on 18 July 1878 by timescale Records on 18 July 1878 by timescale: all-time 0, monthly 0, daily 4. 01234all-time: 0monthly: 0daily: 4all-timemonthlydaily
Records on 18 July 1878 by timescale: all-time 0, monthly 0, daily 4.
Records on 18 July 1878 by timescale
TimescaleRecords
all-time0
monthly0
daily4

How Much Records Were Beaten By

4 broken records
Histogram of margins by which records were beaten on 18 July 1878 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 2.7. Ties are not counted. 011220.0 to 0.5: 00.5 to 1.0: 21.0 to 1.5: 01.5 to 2.0: 12.0 to 2.5: 02.5 to 3.0: 10.0 to 0.50.5 to 1.01.0 to 1.51.5 to 2.02.0 to 2.52.5 to 3.0
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 2.7. Ties are not counted.
Histogram of margins by which records were beaten on 18 July 1878
MarginRecords
0.0 to 0.50
0.5 to 1.02
1.0 to 1.50
1.5 to 2.01
2.0 to 2.50
2.5 to 3.01

Top 20 by Significance

18 July 1878
Top 4 records on 18 July 1878 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
18 July 1878Armagh, GBdaily high min15.1 C (59.2 F)1.6 C (2.9 F)20 years16 of 100 (Routine)
18 July 1878Adelaide West Terrace, AUdaily rain21.8 mm (0.9 in)2.7 mm (0.11 in)12 years12 of 100 (Routine)
18 July 1878Toronto, CAdaily high min22.2 C (72.0 F)0.5 C (0.9 F)23 years10 of 100 (Routine)
18 July 1878Newark Liberty Intl AP, USdaily high max36.1 C (97.0 F)0.5 C (0.9 F)21 years10 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 1878
Records on 07-18 in each year Records set or tied on this calendar date in each year from 1793 to 1878. 1878 had 4 records. 05001,0001,5002,0001793: 21801: 11845: 11847: 11851: 11858: 11862: 11863: 21865: 11866: 21871: 21872: 11874: 11877: 11878: 41880: 11881: 21883: 21886: 21887: 21888: 11889: 21890: 41891: 11892: 21895: 11896: 21897: 61898: 21899: 31900: 81901: 51902: 31903: 141904: 71905: 221906: 131907: 121908: 391909: 111910: 331911: 421912: 281913: 211914: 471915: 951916: 2351917: 2651918: 581919: 381920: 591921: 671922: 1381923: 1261924: 3061925: 2171926: 1911927: 851928: 1081929: 1231930: 4621931: 3821932: 3431933: 2281934: 5021935: 2121936: 6651937: 3341938: 3061939: 4241940: 3521941: 3491942: 6611943: 2771944: 3331945: 3501946: 3341947: 3851948: 2891949: 5211950: 6321951: 3071952: 5971953: 4931954: 5011955: 4231956: 4661957: 3251958: 4751959: 5481960: 6691961: 2801962: 5161963: 2691964: 5231965: 7071966: 5451967: 7351968: 9981969: 5901970: 5301971: 6251972: 7011973: 9761974: 7291975: 6431976: 1,0471977: 8391978: 8811979: 8211980: 7471981: 6241982: 7491983: 1,0711984: 1,0001985: 5821986: 9081987: 1,8451988: 1,0011989: 1,2331990: 1,0531991: 5891992: 1,1351993: 1,0131994: 7201995: 9041996: 1,1571997: 7851998: 1,1691999: 9002000: 1,2142001: 9092002: 8402003: 1,1592004: 9852005: 1,2102006: 1,2852007: 1,2672008: 5932009: 1,7572010: 8782011: 1,1482012: 1,0702013: 9202014: 1,3482015: 7462016: 6092017: 4262018: 6952019: 5442020: 3602021: 6722022: 1,0652023: 8642024: 5802025: 7791793188119021918193419501966198219982014
Records set or tied on this calendar date in each year from 1793 to 1878. 1878 had 4 records.
Counts for years before the ledger starts come from the same station rules.
Records on 07-18 in each year
YearRecords
17932
18011
18451
18471
18511
18581
18621
18632
18651
18662
18712
18721
18741
18771
18784
18801
18812
18832
18862
18872
18881
18892
18904
18911
18922
18951
18962
18976
18982
18993
19008
19015
19023
190314
19047
190522
190613
190712
190839
190911
191033
191142
191228
191321
191447
191595
1916235
1917265
191858
191938
192059
192167
1922138
1923126
1924306
1925217
1926191
192785
1928108
1929123
1930462
1931382
1932343
1933228
1934502
1935212
1936665
1937334
1938306
1939424
1940352
1941349
1942661
1943277
1944333
1945350
1946334
1947385
1948289
1949521
1950632
1951307
1952597
1953493
1954501
1955423
1956466
1957325
1958475
1959548
1960669
1961280
1962516
1963269
1964523
1965707
1966545
1967735
1968998
1969590
1970530
1971625
1972701
1973976
1974729
1975643
19761,047
1977839
1978881
1979821
1980747
1981624
1982749
19831,071
19841,000
1985582
1986908
19871,845
19881,001
19891,233
19901,053
1991589
19921,135
19931,013
1994720
1995904
19961,157
1997785
19981,169
1999900
20001,214
2001909
2002840
20031,159
2004985
20051,210
20061,285
20071,267
2008593
20091,757
2010878
20111,148
20121,070
2013920
20141,348
2015746
2016609
2017426
2018695
2019544
2020360
2021672
20221,065
2023864
2024580
2025779

Download the Data

  • Data for records on 1878-07-18: 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 2026-10-18 (18 October 2026). Records are computed by this site and are not official.

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