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

Weather Records on 4 May 1864

3 weather records were set or tied worldwide on 4 May 1864. Highest significance: Praha-Klementinum, CZ.

Key Facts for 4 May 1864

  • On 4 May 1864, 3 weather records were set or tied at long-record stations worldwide.
  • 0 were record highs and 3 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 2 daily.
  • Praha-Klementinum set a daily record low minimum temperature of -0.3 C (31.5 F) on 4 May 1864.
  • Across 162 earlier years (1795 to 2025) the same calendar date averaged 432 records.

Record Map

3 stations
Weather records on 4 May 1864 3 station records on 4 May 1864 are marked on the map, coloured by record type.
3 station records on 4 May 1864 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 4 May 1864: highest significance records shown on the map
StationCountryTypeValueSignificance
Praha-KlementinumCzech RepublicRecord low minimum temperature-0.3 C (31.5 F)19 of 100 (Routine)
Jena SternwarteGermanyRecord low maximum temperature6.9 C (44.4 F)7 of 100 (Routine)
Praha-KlementinumCzech RepublicRecord low maximum temperature6.1 C (43.0 F)4 of 100 (Routine)

Counts by Type and Timescale

3 records
Records on 4 May 1864 by type Records set or tied on 4 May 1864 by type: Lowest daily maximum 2, Lowest daily minimum 1. 01122Highest daily maximum: 0Lowest daily maximum: 2Highest daily minimum: 0Lowest daily minimum: 1Heaviest daily rainfall: 0Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 4 May 1864 by type: Lowest daily maximum 2, Lowest daily minimum 1.
Records on 4 May 1864 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum2
Highest daily minimum0
Lowest daily minimum1
Heaviest daily rainfall0
Heaviest daily snowfall0
Deepest snow cover0
Records on 4 May 1864 by timescale Records on 4 May 1864 by timescale: all-time 0, monthly 1, daily 2. 01122all-time: 0monthly: 1daily: 2all-timemonthlydaily
Records on 4 May 1864 by timescale: all-time 0, monthly 1, daily 2.
Records on 4 May 1864 by timescale
TimescaleRecords
all-time0
monthly1
daily2

How Much Records Were Beaten By

2 broken records
Histogram of margins by which records were beaten on 4 May 1864 Margins by which the 2 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 1.2. Ties are not counted. 001110.0 to 0.2: 10.2 to 0.4: 00.4 to 0.6: 00.6 to 0.8: 00.8 to 1.0: 01.0 to 1.2: 10.0 to 0.20.2 to 0.40.4 to 0.60.6 to 0.80.8 to 1.01.0 to 1.2
Margins by which the 2 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 1.2. Ties are not counted.
Histogram of margins by which records were beaten on 4 May 1864
MarginRecords
0.0 to 0.21
0.2 to 0.40
0.4 to 0.60
0.6 to 0.80
0.8 to 1.00
1.0 to 1.21

Top 20 by Significance

4 May 1864
Top 3 records on 4 May 1864 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
4 May 1864Praha-Klementinum, CZdaily low min-0.3 C (31.5 F)1.2 C (2.2 F)24 years19 of 100 (Routine)
4 May 1864Jena Sternwarte, DEdaily low max6.9 C (44.4 F)0.1 C (0.2 F)12 years7 of 100 (Routine)
4 May 1864Praha-Klementinum, CZmonthly low max (Tie)6.1 C (43.0 F)tie3 years4 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

1795 to 1864
Records on 05-04 in each year Records set or tied on this calendar date in each year from 1795 to 1864. 1864 had 3 records. 05001,0001,5002,0001795: 11796: 11820: 11836: 21840: 11847: 11850: 21851: 21852: 11856: 31858: 11859: 11861: 21862: 11864: 31865: 21868: 31869: 11870: 21875: 11877: 21878: 11879: 11880: 11882: 11885: 11886: 11888: 11889: 41890: 11892: 41893: 31894: 61895: 31896: 31897: 21898: 21899: 21900: 21902: 51903: 81904: 81905: 191906: 51907: 371908: 181909: 131910: 141911: 371912: 121913: 631914: 211915: 751916: 571917: 601918: 301919: 691920: 431921: 621922: 2831923: 821924: 881925: 801926: 2301927: 1121928: 2051929: 1771930: 2691931: 1691932: 1041933: 2741934: 4561935: 5181936: 3131937: 2301938: 4451939: 2951940: 6021941: 4361942: 8201943: 3581944: 8721945: 6541946: 4631947: 6491948: 5781949: 1,1301950: 9531951: 2921952: 6981953: 3891954: 1,0451955: 4711956: 4331957: 4331958: 4141959: 6131960: 4431961: 4661962: 2651963: 3131964: 5701965: 4331966: 1,1131967: 9281968: 3041969: 3771970: 4541971: 8101972: 3641973: 3131974: 3671975: 6831976: 5541977: 7361978: 1,0161979: 1,5291980: 5111981: 6671982: 5911983: 5391984: 8851985: 8211986: 1,1281987: 1,0041988: 5911989: 7431990: 1,4611991: 1,0881992: 9331993: 7911994: 8211995: 9741996: 1,2981997: 9621998: 8981999: 1,1672000: 1,3982001: 1,3452002: 1,3432003: 1,1582004: 1,3412005: 1,1522006: 6502007: 6992008: 6242009: 7272010: 9992011: 1,0232012: 1,3432013: 1,4472014: 6022015: 6222016: 4632017: 6692018: 9662019: 5712020: 5012021: 6132022: 4662023: 6782024: 8852025: 4571795186918961914193119481965198219992016
Records set or tied on this calendar date in each year from 1795 to 1864. 1864 had 3 records.
Counts for years before the ledger starts come from the same station rules.
Records on 05-04 in each year
YearRecords
17951
17961
18201
18362
18401
18471
18502
18512
18521
18563
18581
18591
18612
18621
18643
18652
18683
18691
18702
18751
18772
18781
18791
18801
18821
18851
18861
18881
18894
18901
18924
18933
18946
18953
18963
18972
18982
18992
19002
19025
19038
19048
190519
19065
190737
190818
190913
191014
191137
191212
191363
191421
191575
191657
191760
191830
191969
192043
192162
1922283
192382
192488
192580
1926230
1927112
1928205
1929177
1930269
1931169
1932104
1933274
1934456
1935518
1936313
1937230
1938445
1939295
1940602
1941436
1942820
1943358
1944872
1945654
1946463
1947649
1948578
19491,130
1950953
1951292
1952698
1953389
19541,045
1955471
1956433
1957433
1958414
1959613
1960443
1961466
1962265
1963313
1964570
1965433
19661,113
1967928
1968304
1969377
1970454
1971810
1972364
1973313
1974367
1975683
1976554
1977736
19781,016
19791,529
1980511
1981667
1982591
1983539
1984885
1985821
19861,128
19871,004
1988591
1989743
19901,461
19911,088
1992933
1993791
1994821
1995974
19961,298
1997962
1998898
19991,167
20001,398
20011,345
20021,343
20031,158
20041,341
20051,152
2006650
2007699
2008624
2009727
2010999
20111,023
20121,343
20131,447
2014602
2015622
2016463
2017669
2018966
2019571
2020501
2021613
2022466
2023678
2024885
2025457

Download the Data

  • Data for records on 1864-05-04: 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).