Daily records
Page built 2026-10-15
Data as of 2026-10-12
Search
Built 2026-10-15 (15 October 2026)

Weather Records on 21 May 1920

39 weather records were set or tied worldwide on 21 May 1920. Highest significance: Hanover, US.

Key Facts for 21 May 1920

  • On 21 May 1920, 39 weather records were set or tied at long-record stations worldwide.
  • 21 were record highs and 7 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 2 monthly and 37 daily.
  • Hanover set a daily record precipitation of 33.8 mm (1.3 in) on 21 May 1920.
  • Across 156 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

39 stations
Weather records on 21 May 1920 39 station records on 21 May 1920 are marked on the map, coloured by record type.
39 station records on 21 May 1920 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 21 May 1920: highest significance records shown on the map
StationCountryTypeValueSignificance
HanoverUnited StatesRecord daily precipitation33.8 mm (1.3 in)32 of 100 (Routine)
BolognaItalyRecord high minimum temperature21.4 C (70.5 F)31 of 100 (Routine)
Santa FeUnited StatesRecord daily precipitation31.0 mm (1.2 in)30 of 100 (Routine)
Newark Liberty Intl APUnited StatesRecord daily precipitation28.7 mm (1.1 in)23 of 100 (Routine)
KremsmuensterAustriaRecord high minimum temperature16.9 C (62.4 F)22 of 100 (Routine)
Svenska HogarnaSwedenRecord daily precipitation17.0 mm (0.7 in)20 of 100 (Routine)
Olands Sodra UddeSwedenRecord daily precipitation14.0 mm (0.6 in)20 of 100 (Routine)
Forbes (Camp Street)AustraliaRecord low minimum temperature-2.2 C (28.0 F)20 of 100 (Routine)
St John'sCanadaRecord low maximum temperature2.2 C (36.0 F)18 of 100 (Routine)
Malin HeadIrelandRecord daily precipitation8.7 mm (0.34 in)17 of 100 (Routine)
NeedlesUnited StatesRecord daily precipitation6.1 mm (0.24 in)17 of 100 (Routine)
Alice Springs Post OfficeAustraliaRecord low minimum temperature-1.1 C (30.0 F)14 of 100 (Routine)
JokkmokkSwedenRecord high minimum temperature5.0 C (41.0 F)13 of 100 (Routine)
Sfax El-MaouTunisiaRecord high maximum temperature34.0 C (93.2 F)13 of 100 (Routine)
Adelaide West TerraceAustraliaRecord low maximum temperature13.7 C (56.7 F)12 of 100 (Routine)
Woody IslandAustraliaRecord daily precipitation34.3 mm (1.4 in)12 of 100 (Routine)
CottbusGermanyRecord high minimum temperature14.6 C (58.3 F)12 of 100 (Routine)
Heinersreuth-VollhofGermanyRecord high minimum temperature15.3 C (59.5 F)12 of 100 (Routine)
HarnosandSwedenRecord high minimum temperature7.5 C (45.5 F)12 of 100 (Routine)
GavleSwedenRecord high minimum temperature8.0 C (46.4 F)12 of 100 (Routine)
Agassiz CdaCanadaRecord daily precipitation18.5 mm (0.7 in)11 of 100 (Routine)
Zagreb-GricCroatiaRecord high minimum temperature18.0 C (64.4 F)10 of 100 (Routine)
KievUkraineRecord high minimum temperature15.3 C (59.5 F)10 of 100 (Routine)
SalzburgAustriaRecord high minimum temperature15.6 C (60.1 F)9 of 100 (Routine)
SonnblickAustriaRecord high maximum temperature6.4 C (43.5 F)9 of 100 (Routine)
Zagreb-GricCroatiaRecord high maximum temperature29.6 C (85.3 F)9 of 100 (Routine)
IrkutskRussiaRecord low minimum temperature-3.5 C (25.7 F)8 of 100 (Routine)
KirovRussiaRecord high minimum temperature14.3 C (57.7 F)7 of 100 (Routine)
SonnblickAustriaRecord high minimum temperature-0.1 C (31.8 F)6 of 100 (Routine)
NicosiaCyprusRecord daily precipitation9.4 mm (0.37 in)5 of 100 (Routine)
CottbusGermanyRecord high maximum temperature28.0 C (82.4 F)4 of 100 (Routine)
Santa FeUnited StatesRecord high minimum temperature11.1 C (52.0 F)4 of 100 (Routine)
Cape York Post OfficeAustraliaRecord daily precipitation7.9 mm (0.31 in)3 of 100 (Routine)
Boulia AirportAustraliaRecord low maximum temperature20.6 C (69.1 F)3 of 100 (Routine)
MalvernUnited StatesRecord high minimum temperature25.6 C (78.1 F)3 of 100 (Routine)
Fort ChipewyanCanadaRecord low maximum temperature5.6 C (42.1 F)2 of 100 (Routine)
Nemours (Ghazaouet)AlgeriaRecord high minimum temperature17.0 C (62.6 F)1 of 100 (Routine)
Munchen-NymphenburgGermanyRecord high minimum temperature14.1 C (57.4 F)1 of 100 (Routine)
Kvikkjokk-ArrenjarkaSwedenRecord high minimum temperature5.0 C (41.0 F)0 of 100 (Routine)

Counts by Type and Timescale

39 records
Records on 21 May 1920 by type Records set or tied on 21 May 1920 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 17, Lowest daily minimum 3, Heaviest daily rainfall 11. 05101520Highest daily maximum: 4Lowest daily maximum: 4Highest daily minimum: 17Lowest daily minimum: 3Heaviest daily rainfall: 11Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 21 May 1920 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 17, Lowest daily minimum 3, Heaviest daily rainfall 11.
Records on 21 May 1920 by type
Record typeRecords
Highest daily maximum4
Lowest daily maximum4
Highest daily minimum17
Lowest daily minimum3
Heaviest daily rainfall11
Heaviest daily snowfall0
Deepest snow cover0
Records on 21 May 1920 by timescale Records on 21 May 1920 by timescale: all-time 0, monthly 2, daily 37. 010203040all-time: 0monthly: 2daily: 37all-timemonthlydaily
Records on 21 May 1920 by timescale: all-time 0, monthly 2, daily 37.
Records on 21 May 1920 by timescale
TimescaleRecords
all-time0
monthly2
daily37

How Much Records Were Beaten By

32 broken records
Histogram of margins by which records were beaten on 21 May 1920 Margins by which the 32 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 19.3. Ties are not counted. 01020300 to 3: 243 to 5: 35 to 8: 28 to 10: 210 to 13: 013 to 15: 015 to 18: 018 to 20: 10 to 33 to 55 to 88 to 1010 to 1313 to 1515 to 1818 to 20
Margins by which the 32 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 19.3. Ties are not counted.
Histogram of margins by which records were beaten on 21 May 1920
MarginRecords
0 to 324
3 to 53
5 to 82
8 to 102
10 to 130
13 to 150
15 to 180
18 to 201

Top 20 by Significance

21 May 1920
Top 20 records on 21 May 1920 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
21 May 1920Hanover, USdaily rain33.8 mm (1.3 in)19.3 mm (0.8 in)30 years32 of 100 (Routine)
21 May 1920Bologna, ITdaily high min21.4 C (70.5 F)0.1 C (0.2 F)72 years31 of 100 (Routine)
21 May 1920Santa Fe, USdaily rain31.0 mm (1.2 in)9.9 mm (0.39 in)24 years30 of 100 (Routine)
21 May 1920Newark Liberty Intl AP, USdaily rain28.7 mm (1.1 in)1.8 mm (0.07 in)51 years23 of 100 (Routine)
21 May 1920Kremsmuenster, ATmonthly high min16.9 C (62.4 F)0.1 C (0.2 F)27 years22 of 100 (Routine)
21 May 1920Svenska Hogarna, SEdaily rain17.0 mm (0.7 in)9.3 mm (0.37 in)4 years20 of 100 (Routine)
21 May 1920Olands Sodra Udde, SEdaily rain14.0 mm (0.6 in)4.2 mm (0.17 in)32 years20 of 100 (Routine)
21 May 1920Forbes (Camp Street), AUdaily low min-2.2 C (28.0 F)2.2 C (4.0 F)34 years20 of 100 (Routine)
21 May 1920St John's, CAdaily low max2.2 C (36.0 F)2.2 C (4.0 F)34 years18 of 100 (Routine)
21 May 1920Malin Head, IEdaily rain8.7 mm (0.34 in)3.9 mm (0.15 in)12 years17 of 100 (Routine)
21 May 1920Needles, USdaily rain6.1 mm (0.24 in)6.1 mm (0.24 in)27 years17 of 100 (Routine)
21 May 1920Alice Springs Post Office, AUdaily low min-1.1 C (30.0 F)1.8 C (3.2 F)20 years14 of 100 (Routine)
21 May 1920Jokkmokk, SEdaily high min5.0 C (41.0 F)1.0 C (1.8 F)29 years13 of 100 (Routine)
21 May 1920Sfax El-Maou, TNdaily high max34.0 C (93.2 F)2.0 C (3.6 F)16 years13 of 100 (Routine)
21 May 1920Adelaide West Terrace, AUdaily low max13.7 C (56.7 F)0.5 C (0.9 F)27 years12 of 100 (Routine)
21 May 1920Woody Island, AUdaily rain34.3 mm (1.4 in)7.4 mm (0.29 in)15 years12 of 100 (Routine)
21 May 1920Cottbus, DEdaily high min14.6 C (58.3 F)0.4 C (0.7 F)29 years12 of 100 (Routine)
21 May 1920Heinersreuth-Vollhof, DEdaily high min15.3 C (59.5 F)2.1 C (3.8 F)10 years12 of 100 (Routine)
21 May 1920Harnosand, SEdaily high min7.5 C (45.5 F)0.5 C (0.9 F)29 years12 of 100 (Routine)
21 May 1920Gavle, SEdaily high min8.0 C (46.4 F)0.5 C (0.9 F)29 years12 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 1920
Records on 05-21 in each year Records set or tied on this calendar date in each year from 1793 to 1920. 1920 had 39 records. 01,0002,0003,0001793: 11795: 11811: 11837: 21842: 11847: 21854: 11857: 11858: 11865: 11866: 11870: 21875: 11876: 11880: 21882: 11885: 11886: 21887: 31889: 51890: 31891: 61892: 11893: 11894: 41895: 41896: 51897: 21898: 11899: 51900: 11901: 31902: 41903: 261904: 81905: 71906: 121907: 361908: 131909: 131910: 141911: 871912: 241913: 131914: 261915: 241916: 131917: 761918: 511919: 1701920: 391921: 1581922: 391923: 1251924: 1481925: 2501926: 2211927: 2071928: 1731929: 2471930: 1331931: 4881932: 3431933: 2901934: 5901935: 1901936: 3281937: 2271938: 3481939: 3551940: 4561941: 5251942: 4821943: 4631944: 3101945: 5151946: 3241947: 4851948: 3121949: 5931950: 4031951: 2711952: 3851953: 5011954: 9611955: 5071956: 4091957: 7091958: 5111959: 6841960: 6151961: 3061962: 5531963: 5981964: 7881965: 2381966: 2961967: 1,0221968: 5491969: 8321970: 4491971: 5361972: 5571973: 4931974: 8471975: 1,1601976: 3931977: 7561978: 5751979: 7871980: 8571981: 1,5501982: 5991983: 1,1061984: 9501985: 6101986: 9081987: 1,2421988: 8191989: 6711990: 9471991: 1,0651992: 1,1431993: 1,1971994: 6561995: 7491996: 1,4611997: 9531998: 1,2001999: 5442000: 8972001: 1,1872002: 2,0482003: 8072004: 8982005: 1,0202006: 8102007: 8942008: 7402009: 1,3152010: 9622011: 9592012: 8482013: 8842014: 5222015: 9562016: 5672017: 7802018: 5252019: 1,6682020: 7072021: 1,1312022: 1,5122023: 7942024: 7512025: 7762026: 3561793188519021918193419501966198219982014
Records set or tied on this calendar date in each year from 1793 to 1920. 1920 had 39 records.
Counts for years before the ledger starts come from the same station rules.
Records on 05-21 in each year
YearRecords
17931
17951
18111
18372
18421
18472
18541
18571
18581
18651
18661
18702
18751
18761
18802
18821
18851
18862
18873
18895
18903
18916
18921
18931
18944
18954
18965
18972
18981
18995
19001
19013
19024
190326
19048
19057
190612
190736
190813
190913
191014
191187
191224
191313
191426
191524
191613
191776
191851
1919170
192039
1921158
192239
1923125
1924148
1925250
1926221
1927207
1928173
1929247
1930133
1931488
1932343
1933290
1934590
1935190
1936328
1937227
1938348
1939355
1940456
1941525
1942482
1943463
1944310
1945515
1946324
1947485
1948312
1949593
1950403
1951271
1952385
1953501
1954961
1955507
1956409
1957709
1958511
1959684
1960615
1961306
1962553
1963598
1964788
1965238
1966296
19671,022
1968549
1969832
1970449
1971536
1972557
1973493
1974847
19751,160
1976393
1977756
1978575
1979787
1980857
19811,550
1982599
19831,106
1984950
1985610
1986908
19871,242
1988819
1989671
1990947
19911,065
19921,143
19931,197
1994656
1995749
19961,461
1997953
19981,200
1999544
2000897
20011,187
20022,048
2003807
2004898
20051,020
2006810
2007894
2008740
20091,315
2010962
2011959
2012848
2013884
2014522
2015956
2016567
2017780
2018525
20191,668
2020707
20211,131
20221,512
2023794
2024751
2025776
2026356

Download the Data

  • Data for records on 1920-05-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-12).