Daily records
Page built 2026-10-19
Data as of 2026-10-15
Search
Built 2026-10-19 (19 October 2026)

Weather Records on 20 April 1921

27 weather records were set or tied worldwide on 20 April 1921. Highest significance: Hopetown (Tnk), ZA.

Key Facts for 20 April 1921

  • On 20 April 1921, 27 weather records were set or tied at long-record stations worldwide.
  • 9 were record highs and 9 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 27 daily.
  • Hopetown (Tnk) set a daily record precipitation of 50.8 mm (2.0 in) on 20 April 1921.
  • Across 159 earlier years (1807 to 2026) the same calendar date averaged 465 records.

Record Map

27 stations
Weather records on 20 April 1921 27 station records on 20 April 1921 are marked on the map, coloured by record type.
27 station records on 20 April 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 20 April 1921: highest significance records shown on the map
StationCountryTypeValueSignificance
Hopetown (Tnk)South AfricaRecord daily precipitation50.8 mm (2.0 in)52 of 100 (Notable)
Richmond C/K (Tnk)South AfricaRecord daily precipitation39.1 mm (1.5 in)50 of 100 (Notable)
Rapid City ForrestCanadaRecord daily snowfall17.8 cm (7.0 in)35 of 100 (Notable)
Jena SternwarteGermanyRecord low minimum temperature-4.9 C (23.2 F)24 of 100 (Routine)
PesaroItalyRecord daily precipitation16.0 mm (0.6 in)20 of 100 (Routine)
St. PetersburgRussiaRecord daily precipitation16.2 mm (0.6 in)20 of 100 (Routine)
Rapid City ForrestCanadaRecord daily precipitation17.8 mm (0.7 in)17 of 100 (Routine)
Sydney (Observatory Hill)AustraliaRecord high maximum temperature27.9 C (82.2 F)16 of 100 (Routine)
Heinersreuth-VollhofGermanyRecord low minimum temperature-4.9 C (23.2 F)16 of 100 (Routine)
PlauenGermanyRecord low minimum temperature-4.4 C (24.1 F)16 of 100 (Routine)
ChathamCanadaRecord high maximum temperature18.9 C (66.0 F)15 of 100 (Routine)
ArhangelskRussiaRecord high minimum temperature7.7 C (45.9 F)14 of 100 (Routine)
Hot Springs 1 NNEUnited StatesRecord daily precipitation45.7 mm (1.8 in)13 of 100 (Routine)
Berlin-DahlemGermanyRecord low minimum temperature-1.6 C (29.1 F)12 of 100 (Routine)
WinterswijkNetherlandsRecord daily precipitation5.5 mm (0.22 in)12 of 100 (Routine)
Gainesville UNIV of FlUnited StatesRecord low minimum temperature6.7 C (44.1 F)12 of 100 (Routine)
Troicko-PecherskoeRussiaRecord high minimum temperature5.0 C (41.0 F)9 of 100 (Routine)
ChaplinCanadaRecord daily precipitation2.3 mm (0.09 in)7 of 100 (Routine)
SyktyvkarRussiaRecord high minimum temperature7.0 C (44.6 F)6 of 100 (Routine)
CottbusGermanyRecord low minimum temperature-2.6 C (27.3 F)5 of 100 (Routine)
KarlsruheGermanyRecord low minimum temperature-0.5 C (31.1 F)3 of 100 (Routine)
Huron Rgnl APUnited StatesRecord high minimum temperature11.7 C (53.1 F)3 of 100 (Routine)
GalwayIrelandRecord low minimum temperature0.6 C (33.1 F)2 of 100 (Routine)
TampaUnited StatesRecord low minimum temperature10.6 C (51.1 F)2 of 100 (Routine)
FranklinUnited StatesRecord high minimum temperature10.0 C (50.0 F)2 of 100 (Routine)
HaparandaSwedenRecord high minimum temperature1.0 C (33.8 F)1 of 100 (Routine)
KaresuandoSwedenRecord high maximum temperature9.0 C (48.2 F)1 of 100 (Routine)

Counts by Type and Timescale

27 records
Records on 20 April 1921 by type Records set or tied on 20 April 1921 by type: Highest daily maximum 3, Highest daily minimum 6, Lowest daily minimum 9, Heaviest daily rainfall 8, Heaviest daily snowfall 1. 035810Highest daily maximum: 3Lowest daily maximum: 0Highest daily minimum: 6Lowest daily minimum: 9Heaviest daily rainfall: 8Heaviest daily snowfall: 1Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 20 April 1921 by type: Highest daily maximum 3, Highest daily minimum 6, Lowest daily minimum 9, Heaviest daily rainfall 8, Heaviest daily snowfall 1.
Records on 20 April 1921 by type
Record typeRecords
Highest daily maximum3
Lowest daily maximum0
Highest daily minimum6
Lowest daily minimum9
Heaviest daily rainfall8
Heaviest daily snowfall1
Deepest snow cover0
Records on 20 April 1921 by timescale Records on 20 April 1921 by timescale: all-time 0, monthly 0, daily 27. 0102030all-time: 0monthly: 0daily: 27all-timemonthlydaily
Records on 20 April 1921 by timescale: all-time 0, monthly 0, daily 27.
Records on 20 April 1921 by timescale
TimescaleRecords
all-time0
monthly0
daily27

How Much Records Were Beaten By

20 broken records
Histogram of margins by which records were beaten on 20 April 1921 Margins by which the 20 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 153.0. Ties are not counted. 051015200 to 20: 1720 to 40: 240 to 60: 060 to 80: 080 to 100: 0100 to 120: 0120 to 140: 0140 to 160: 10 to 2020 to 4040 to 6060 to 8080 to 100100 to 120120 to 140140 to 160
Margins by which the 20 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 153.0. Ties are not counted.
Histogram of margins by which records were beaten on 20 April 1921
MarginRecords
0 to 2017
20 to 402
40 to 600
60 to 800
80 to 1000
100 to 1200
120 to 1400
140 to 1601

Top 20 by Significance

20 April 1921
Top 20 records on 20 April 1921 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
20 April 1921Hopetown (Tnk), ZAdaily rain50.8 mm (2.0 in)35.6 mm (1.4 in)29 years52 of 100 (Notable)
20 April 1921Richmond C/K (Tnk), ZAdaily rain39.1 mm (1.5 in)32.2 mm (1.3 in)30 years50 of 100 (Notable)
20 April 1921Rapid City Forrest, CAdaily snowfall17.8 cm (7.0 in)15.3 cm (6.0 in)16 years35 of 100 (Notable)
20 April 1921Jena Sternwarte, DEdaily low min-4.9 C (23.2 F)1.6 C (2.9 F)39 years24 of 100 (Routine)
20 April 1921Pesaro, ITdaily rain16.0 mm (0.6 in)4.0 mm (0.16 in)43 years20 of 100 (Routine)
20 April 1921St. Petersburg, RUdaily rain16.2 mm (0.6 in)3.6 mm (0.14 in)23 years20 of 100 (Routine)
20 April 1921Rapid City Forrest, CAdaily rain17.8 mm (0.7 in)13.0 mm (0.5 in)8 years17 of 100 (Routine)
20 April 1921Sydney (Observatory Hill), AUdaily high max27.9 C (82.2 F)1.3 C (2.3 F)21 years16 of 100 (Routine)
20 April 1921Heinersreuth-Vollhof, DEdaily low min-4.9 C (23.2 F)0.5 C (0.9 F)39 years16 of 100 (Routine)
20 April 1921Plauen, DEdaily low min-4.4 C (24.1 F)0.9 C (1.6 F)35 years16 of 100 (Routine)
20 April 1921Chatham, CAdaily high max18.9 C (66.0 F)0.6 C (1.1 F)35 years15 of 100 (Routine)
20 April 1921Arhangelsk, RUdaily high min7.7 C (45.9 F)4.3 C (7.7 F)11 years14 of 100 (Routine)
20 April 1921Hot Springs 1 NNE, USdaily rain45.7 mm (1.8 in)2.5 mm (0.10 in)28 years13 of 100 (Routine)
20 April 1921Berlin-Dahlem, DEdaily low min-1.6 C (29.1 F)1.1 C (2.0 F)18 years12 of 100 (Routine)
20 April 1921Winterswijk, NLdaily rain5.5 mm (0.22 in)0.5 mm (0.02 in)23 years12 of 100 (Routine)
20 April 1921Gainesville UNIV of Fl, USdaily low min6.7 C (44.1 F)1.6 C (2.9 F)20 years12 of 100 (Routine)
20 April 1921Troicko-Pecherskoe, RUdaily high min5.0 C (41.0 F)2.0 C (3.6 F)15 years9 of 100 (Routine)
20 April 1921Chaplin, CAdaily rain2.3 mm (0.09 in)1.0 mm (0.04 in)12 years7 of 100 (Routine)
20 April 1921Syktyvkar, RUdaily high min7.0 C (44.6 F)1.4 C (2.5 F)4 years6 of 100 (Routine)
20 April 1921Cottbus, DEdaily low min-2.6 C (27.3 F)1.0 C (1.8 F)3 years5 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

1807 to 1921
Records on 04-20 in each year Records set or tied on this calendar date in each year from 1807 to 1921. 1921 had 27 records. 05001,0001,5002,0001807: 31817: 11838: 11849: 21851: 11852: 41854: 11858: 11860: 11864: 11865: 31868: 11869: 11870: 11872: 11874: 31875: 41876: 11878: 21880: 21881: 21884: 11885: 11886: 21889: 11891: 21892: 11893: 61894: 81895: 71896: 31897: 61898: 11899: 11901: 81902: 31903: 141904: 311905: 91906: 121907: 181908: 141909: 221910: 251911: 181912: 121913: 191914: 461915: 451916: 191917: 331918: 421919: 171920: 491921: 271922: 401923: 1571924: 1131925: 1691926: 3101927: 4421928: 2121929: 1821930: 871931: 2551932: 1661933: 2791934: 3841935: 3841936: 3111937: 4271938: 3391939: 1581940: 5191941: 5581942: 2231943: 6701944: 3041945: 3911946: 3951947: 3081948: 4931949: 4771950: 3291951: 6901952: 5521953: 1,0711954: 3771955: 6231956: 3841957: 7301958: 3271959: 5631960: 4721961: 1,0781962: 4871963: 5951964: 7491965: 7241966: 1,1741967: 8641968: 9751969: 3821970: 9481971: 7651972: 5311973: 9821974: 6731975: 3441976: 6611977: 6931978: 8001979: 4951980: 1,5391981: 7061982: 9061983: 1,8441984: 9221985: 1,1401986: 7701987: 1,4471988: 1,1441989: 1,1871990: 1,4951991: 1,0751992: 1,0091993: 7721994: 7561995: 1,3511996: 9701997: 8331998: 1,4901999: 6742000: 9312001: 7522002: 1,0812003: 7582004: 5672005: 7072006: 8592007: 5822008: 1,1102009: 8452010: 6932011: 1,4772012: 7262013: 1,5202014: 3842015: 7022016: 6502017: 7342018: 1,3092019: 1,0192020: 4492021: 1,2152022: 5962023: 8282024: 6732025: 8362026: 5331807187518981915193119471963197919952011
Records set or tied on this calendar date in each year from 1807 to 1921. 1921 had 27 records.
Counts for years before the ledger starts come from the same station rules.
Records on 04-20 in each year
YearRecords
18073
18171
18381
18492
18511
18524
18541
18581
18601
18641
18653
18681
18691
18701
18721
18743
18754
18761
18782
18802
18812
18841
18851
18862
18891
18912
18921
18936
18948
18957
18963
18976
18981
18991
19018
19023
190314
190431
19059
190612
190718
190814
190922
191025
191118
191212
191319
191446
191545
191619
191733
191842
191917
192049
192127
192240
1923157
1924113
1925169
1926310
1927442
1928212
1929182
193087
1931255
1932166
1933279
1934384
1935384
1936311
1937427
1938339
1939158
1940519
1941558
1942223
1943670
1944304
1945391
1946395
1947308
1948493
1949477
1950329
1951690
1952552
19531,071
1954377
1955623
1956384
1957730
1958327
1959563
1960472
19611,078
1962487
1963595
1964749
1965724
19661,174
1967864
1968975
1969382
1970948
1971765
1972531
1973982
1974673
1975344
1976661
1977693
1978800
1979495
19801,539
1981706
1982906
19831,844
1984922
19851,140
1986770
19871,447
19881,144
19891,187
19901,495
19911,075
19921,009
1993772
1994756
19951,351
1996970
1997833
19981,490
1999674
2000931
2001752
20021,081
2003758
2004567
2005707
2006859
2007582
20081,110
2009845
2010693
20111,477
2012726
20131,520
2014384
2015702
2016650
2017734
20181,309
20191,019
2020449
20211,215
2022596
2023828
2024673
2025836
2026533

Download the Data

  • Data for records on 1921-04-20: 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).