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

Weather Records on 15 August 1861

3 weather records were set or tied worldwide on 15 August 1861. Highest significance: Praha-Klementinum, CZ.

Key Facts for 15 August 1861

  • On 15 August 1861, 3 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 3 daily.
  • Praha-Klementinum set a daily record high maximum temperature of 31.4 C (88.5 F) on 15 August 1861.
  • Across 167 earlier years (1793 to 2025) the same calendar date averaged 454 records.

Record Map

3 stations
Weather records on 15 August 1861 3 station records on 15 August 1861 are marked on the map, coloured by record type.
3 station records on 15 August 1861 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 15 August 1861: highest significance records shown on the map
StationCountryTypeValueSignificance
Praha-KlementinumCzech RepublicRecord high maximum temperature31.4 C (88.5 F)27 of 100 (Routine)
MilanItalyRecord high maximum temperature36.9 C (98.4 F)23 of 100 (Routine)
BolognaItalyRecord high minimum temperature27.3 C (81.1 F)19 of 100 (Routine)

Counts by Type and Timescale

3 records
Records on 15 August 1861 by type Records set or tied on 15 August 1861 by type: Highest daily maximum 2, Highest daily minimum 1. 01122Highest daily maximum: 2Lowest daily maximum: 0Highest daily minimum: 1Lowest daily minimum: 0Heaviest daily rainfall: 0Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 15 August 1861 by type: Highest daily maximum 2, Highest daily minimum 1.
Records on 15 August 1861 by type
Record typeRecords
Highest daily maximum2
Lowest daily maximum0
Highest daily minimum1
Lowest daily minimum0
Heaviest daily rainfall0
Heaviest daily snowfall0
Deepest snow cover0
Records on 15 August 1861 by timescale Records on 15 August 1861 by timescale: all-time 0, monthly 0, daily 3. 0123all-time: 0monthly: 0daily: 3all-timemonthlydaily
Records on 15 August 1861 by timescale: all-time 0, monthly 0, daily 3.
Records on 15 August 1861 by timescale
TimescaleRecords
all-time0
monthly0
daily3

How Much Records Were Beaten By

3 broken records
Histogram of margins by which records were beaten on 15 August 1861 Margins by which the 3 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 3.9. Ties are not counted. 001110.0 to 0.5: 00.5 to 1.0: 11.0 to 1.5: 11.5 to 2.0: 02.0 to 2.5: 02.5 to 3.0: 03.0 to 3.5: 03.5 to 4.0: 10.0 to 0.50.5 to 1.01.0 to 1.51.5 to 2.02.0 to 2.52.5 to 3.03.0 to 3.53.5 to 4.0
Margins by which the 3 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 3.9. Ties are not counted.
Histogram of margins by which records were beaten on 15 August 1861
MarginRecords
0.0 to 0.50
0.5 to 1.01
1.0 to 1.51
1.5 to 2.00
2.0 to 2.50
2.5 to 3.00
3.0 to 3.50
3.5 to 4.01

Top 20 by Significance

15 August 1861
Top 3 records on 15 August 1861 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
15 August 1861Praha-Klementinum, CZdaily high max31.4 C (88.5 F)0.7 C (1.3 F)60 years27 of 100 (Routine)
15 August 1861Milan, ITdaily high max36.9 C (98.4 F)3.9 C (7.0 F)4 years23 of 100 (Routine)
15 August 1861Bologna, ITdaily high min27.3 C (81.1 F)1.0 C (1.8 F)40 years19 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 1861
Records on 08-15 in each year Records set or tied on this calendar date in each year from 1793 to 1861. 1861 had 3 records. 05001,0001,5002,0001793: 21802: 11805: 11812: 11821: 11838: 21839: 11841: 11844: 11845: 31852: 11854: 11856: 11858: 11861: 31867: 11868: 21869: 11873: 21875: 11876: 21877: 11878: 11879: 11880: 31881: 21882: 21883: 11884: 21885: 31886: 11887: 11888: 31890: 21891: 21892: 31893: 31895: 11896: 91897: 31898: 11899: 21900: 61901: 51902: 101903: 51904: 171905: 261906: 81907: 141908: 151909: 301910: 161911: 261912: 341913: 421914: 111915: 261916: 2231917: 321918: 231919: 221920: 591921: 551922: 861923: 1161924: 2201925: 911926: 1151927: 2231928: 2711929: 5861930: 2741931: 3511932: 3681933: 2681934: 9921935: 4141936: 8671937: 5741938: 6811939: 4501940: 3721941: 2891942: 3771943: 4261944: 6101945: 4331946: 2851947: 5591948: 3661949: 5591950: 3171951: 5971952: 5961953: 4491954: 4811955: 5391956: 3901957: 3551958: 1,0921959: 5151960: 4171961: 7041962: 1,0521963: 9721964: 1,1851965: 5351966: 3401967: 6871968: 1,0021969: 5831970: 3821971: 8991972: 6131973: 4991974: 5121975: 4901976: 1,3451977: 5501978: 8411979: 1,7881980: 7451981: 5881982: 4791983: 9551984: 6221985: 9151986: 1,2831987: 1,0981988: 1,4791989: 4951990: 7581991: 7781992: 1,6381993: 8311994: 1,0731995: 1,2981996: 9291997: 9271998: 8611999: 9562000: 9322001: 1,2542002: 1,3072003: 1,2482004: 1,4242005: 1,0672006: 9232007: 1,3172008: 9642009: 1,0382010: 1,6222011: 7702012: 6542013: 7112014: 5832015: 7592016: 7072017: 5322018: 3252019: 4282020: 1,3232021: 8962022: 6912023: 1,4022024: 7292025: 7731793186918911909192619431960197719942011
Records set or tied on this calendar date in each year from 1793 to 1861. 1861 had 3 records.
Counts for years before the ledger starts come from the same station rules.
Records on 08-15 in each year
YearRecords
17932
18021
18051
18121
18211
18382
18391
18411
18441
18453
18521
18541
18561
18581
18613
18671
18682
18691
18732
18751
18762
18771
18781
18791
18803
18812
18822
18831
18842
18853
18861
18871
18883
18902
18912
18923
18933
18951
18969
18973
18981
18992
19006
19015
190210
19035
190417
190526
19068
190714
190815
190930
191016
191126
191234
191342
191411
191526
1916223
191732
191823
191922
192059
192155
192286
1923116
1924220
192591
1926115
1927223
1928271
1929586
1930274
1931351
1932368
1933268
1934992
1935414
1936867
1937574
1938681
1939450
1940372
1941289
1942377
1943426
1944610
1945433
1946285
1947559
1948366
1949559
1950317
1951597
1952596
1953449
1954481
1955539
1956390
1957355
19581,092
1959515
1960417
1961704
19621,052
1963972
19641,185
1965535
1966340
1967687
19681,002
1969583
1970382
1971899
1972613
1973499
1974512
1975490
19761,345
1977550
1978841
19791,788
1980745
1981588
1982479
1983955
1984622
1985915
19861,283
19871,098
19881,479
1989495
1990758
1991778
19921,638
1993831
19941,073
19951,298
1996929
1997927
1998861
1999956
2000932
20011,254
20021,307
20031,248
20041,424
20051,067
2006923
20071,317
2008964
20091,038
20101,622
2011770
2012654
2013711
2014583
2015759
2016707
2017532
2018325
2019428
20201,323
2021896
2022691
20231,402
2024729
2025773

Download the Data

  • Data for records on 1861-08-15: 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).