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Weather Records on 21 April 1904

10 weather records were set or tied worldwide on 21 April 1904. Highest significance: Halifax, CA.

Key Facts for 21 April 1904

  • On 21 April 1904, 10 weather records were set or tied at long-record stations worldwide.
  • 1 were record highs and 5 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 10 daily.
  • Halifax set a daily record snowfall of 16.8 cm (6.6 in) on 21 April 1904.
  • Across 159 earlier years (1793 to 2026) the same calendar date averaged 465 records.

Record Map

10 stations
Weather records on 21 April 1904 10 station records on 21 April 1904 are marked on the map, coloured by record type.
10 station records on 21 April 1904 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 21 April 1904: highest significance records shown on the map
StationCountryTypeValueSignificance
HalifaxCanadaRecord daily snowfall16.8 cm (6.6 in)37 of 100 (Notable)
TruroCanadaRecord daily snowfall14.7 cm (5.8 in)20 of 100 (Routine)
StratfordCanadaRecord low maximum temperature0.6 C (33.1 F)17 of 100 (Routine)
Nuwara EliyaSri LankaRecord low minimum temperature2.6 C (36.7 F)16 of 100 (Routine)
HalifaxCanadaRecord low maximum temperature2.2 C (36.0 F)13 of 100 (Routine)
TruroCanadaRecord daily precipitation14.7 mm (0.6 in)13 of 100 (Routine)
Kingston Queens UCanadaRecord daily snowfall0.5 cm (0.2 in)12 of 100 (Routine)
Dubuque RiverUnited StatesRecord low minimum temperature-3.3 C (26.1 F)12 of 100 (Routine)
Madison Wb CityUnited StatesRecord low minimum temperature-3.3 C (26.1 F)10 of 100 (Routine)
Fort SillUnited StatesRecord high minimum temperature17.8 C (64.0 F)9 of 100 (Routine)

Counts by Type and Timescale

10 records
Records on 21 April 1904 by type Records set or tied on 21 April 1904 by type: Lowest daily maximum 2, Highest daily minimum 1, Lowest daily minimum 3, Heaviest daily rainfall 1, Heaviest daily snowfall 3. 0123Highest daily maximum: 0Lowest daily maximum: 2Highest daily minimum: 1Lowest daily minimum: 3Heaviest daily rainfall: 1Heaviest daily snowfall: 3Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 21 April 1904 by type: Lowest daily maximum 2, Highest daily minimum 1, Lowest daily minimum 3, Heaviest daily rainfall 1, Heaviest daily snowfall 3.
Records on 21 April 1904 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum2
Highest daily minimum1
Lowest daily minimum3
Heaviest daily rainfall1
Heaviest daily snowfall3
Deepest snow cover0
Records on 21 April 1904 by timescale Records on 21 April 1904 by timescale: all-time 0, monthly 0, daily 10. 035810all-time: 0monthly: 0daily: 10all-timemonthlydaily
Records on 21 April 1904 by timescale: all-time 0, monthly 0, daily 10.
Records on 21 April 1904 by timescale
TimescaleRecords
all-time0
monthly0
daily10

How Much Records Were Beaten By

10 broken records
Histogram of margins by which records were beaten on 21 April 1904 Margins by which the 10 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 125.0. Ties are not counted. 024680 to 20: 820 to 40: 040 to 60: 160 to 80: 080 to 100: 0100 to 120: 0120 to 140: 10 to 2020 to 4040 to 6060 to 8080 to 100100 to 120120 to 140
Margins by which the 10 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 125.0. Ties are not counted.
Histogram of margins by which records were beaten on 21 April 1904
MarginRecords
0 to 208
20 to 400
40 to 601
60 to 800
80 to 1000
100 to 1200
120 to 1401

Top 20 by Significance

21 April 1904
Top 10 records on 21 April 1904 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
21 April 1904Halifax, CAdaily snowfall16.8 cm (6.6 in)12.5 cm (4.9 in)29 years37 of 100 (Notable)
21 April 1904Truro, CAdaily snowfall14.7 cm (5.8 in)4.5 cm (1.8 in)28 years20 of 100 (Routine)
21 April 1904Stratford, CAdaily low max0.6 C (33.1 F)3.3 C (5.9 F)30 years17 of 100 (Routine)
21 April 1904Nuwara Eliya, LKdaily low min2.6 C (36.7 F)1.3 C (2.3 F)26 years16 of 100 (Routine)
21 April 1904Halifax, CAdaily low max2.2 C (36.0 F)1.1 C (2.0 F)29 years13 of 100 (Routine)
21 April 1904Truro, CAdaily rain14.7 mm (0.6 in)2.5 mm (0.10 in)25 years13 of 100 (Routine)
21 April 1904Kingston Queens U, CAdaily snowfall0.5 cm (0.2 in)0.5 cm (0.2 in)31 years12 of 100 (Routine)
21 April 1904Dubuque River, USdaily low min-3.3 C (26.1 F)0.5 C (0.9 F)28 years12 of 100 (Routine)
21 April 1904Madison Wb City, USdaily low min-3.3 C (26.1 F)1.1 C (2.0 F)19 years10 of 100 (Routine)
21 April 1904Fort Sill, USdaily high min17.8 C (64.0 F)2.2 C (4.0 F)8 years9 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 1904
Records on 04-21 in each year Records set or tied on this calendar date in each year from 1793 to 1904. 1904 had 10 records. 05001,0001,5002,0001793: 11814: 11820: 11838: 11849: 21851: 11852: 31854: 11858: 31861: 21865: 31866: 11868: 11870: 11875: 41876: 21877: 11879: 31880: 11881: 11882: 11884: 11885: 21888: 11890: 11891: 11892: 11893: 21894: 41895: 11897: 11898: 21899: 21900: 71901: 171902: 71903: 31904: 101905: 181906: 51907: 171908: 251909: 201910: 331911: 91912: 221913: 141914: 2201915: 241916: 641917: 481918: 841919: 311920: 851921: 591922: 701923: 2231924: 1191925: 2951926: 1481927: 2841928: 2691929: 1931930: 1271931: 3581932: 3041933: 2011934: 4971935: 2661936: 2771937: 4161938: 2951939: 1101940: 4621941: 3061942: 2851943: 4811944: 2611945: 3671946: 4481947: 4591948: 3651949: 4481950: 5291951: 8841952: 6651953: 6401954: 5271955: 6071956: 4971957: 8241958: 3291959: 5051960: 8891961: 6471962: 3191963: 7781964: 1,1251965: 6581966: 7561967: 9031968: 6551969: 3881970: 7281971: 5461972: 5931973: 1,1631974: 5281975: 3601976: 4521977: 8541978: 7351979: 4491980: 1,9341981: 9441982: 1,0751983: 1,3661984: 1,2311985: 1,2451986: 9771987: 1,2901988: 8981989: 1,5571990: 1,4631991: 1,2911992: 1,7631993: 8471994: 8591995: 1,4761996: 7881997: 9641998: 8761999: 7522000: 9212001: 9672002: 1,3122003: 6072004: 5862005: 6932006: 7612007: 4802008: 1,3272009: 9832010: 8052011: 1,0532012: 6872013: 1,0152014: 3932015: 6212016: 5872017: 7972018: 8622019: 7312020: 3972021: 1,6082022: 4332023: 8872024: 7542025: 5062026: 8531793187718991915193119471963197919952011
Records set or tied on this calendar date in each year from 1793 to 1904. 1904 had 10 records.
Counts for years before the ledger starts come from the same station rules.
Records on 04-21 in each year
YearRecords
17931
18141
18201
18381
18492
18511
18523
18541
18583
18612
18653
18661
18681
18701
18754
18762
18771
18793
18801
18811
18821
18841
18852
18881
18901
18911
18921
18932
18944
18951
18971
18982
18992
19007
190117
19027
19033
190410
190518
19065
190717
190825
190920
191033
19119
191222
191314
1914220
191524
191664
191748
191884
191931
192085
192159
192270
1923223
1924119
1925295
1926148
1927284
1928269
1929193
1930127
1931358
1932304
1933201
1934497
1935266
1936277
1937416
1938295
1939110
1940462
1941306
1942285
1943481
1944261
1945367
1946448
1947459
1948365
1949448
1950529
1951884
1952665
1953640
1954527
1955607
1956497
1957824
1958329
1959505
1960889
1961647
1962319
1963778
19641,125
1965658
1966756
1967903
1968655
1969388
1970728
1971546
1972593
19731,163
1974528
1975360
1976452
1977854
1978735
1979449
19801,934
1981944
19821,075
19831,366
19841,231
19851,245
1986977
19871,290
1988898
19891,557
19901,463
19911,291
19921,763
1993847
1994859
19951,476
1996788
1997964
1998876
1999752
2000921
2001967
20021,312
2003607
2004586
2005693
2006761
2007480
20081,327
2009983
2010805
20111,053
2012687
20131,015
2014393
2015621
2016587
2017797
2018862
2019731
2020397
20211,608
2022433
2023887
2024754
2025506
2026853

Download the Data

  • Data for records on 1904-04-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).