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Weather Records on 1 May 1917

37 weather records were set or tied worldwide on 1 May 1917. Highest significance: Saint John, CA.

Key Facts for 1 May 1917

  • On 1 May 1917, 37 weather records were set or tied at long-record stations worldwide.
  • 1 were record highs and 20 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 4 monthly and 33 daily.
  • Saint John set a monthly record low minimum temperature of -3.3 C (26.1 F) on 1 May 1917.
  • Across 165 earlier years (1795 to 2026) the same calendar date averaged 445 records.

Record Map

37 stations
Weather records on 1 May 1917 37 station records on 1 May 1917 are marked on the map, coloured by record type.
37 station records on 1 May 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 1 May 1917: highest significance records shown on the map
StationCountryTypeValueSignificance
Saint JohnCanadaRecord low minimum temperature-3.3 C (26.1 F)25 of 100 (Routine)
PortlandUnited StatesRecord low maximum temperature3.3 C (37.9 F)24 of 100 (Routine)
Setauket StrongUnited StatesRecord low maximum temperature7.8 C (46.0 F)21 of 100 (Routine)
Newark Liberty Intl APUnited StatesRecord low maximum temperature7.8 C (46.0 F)21 of 100 (Routine)
Nordby (Fano)DenmarkRecord low minimum temperature-0.2 C (31.6 F)20 of 100 (Routine)
Dubuque RiverUnited StatesRecord daily snowfall2.5 cm (1.0 in)19 of 100 (Routine)
Ny City Cntrl ParkUnited StatesRecord low maximum temperature7.2 C (45.0 F)19 of 100 (Routine)
OrilliaCanadaRecord daily precipitation24.4 mm (1.0 in)17 of 100 (Routine)
TbilisiGeorgiaRecord daily precipitation24.2 mm (1.0 in)17 of 100 (Routine)
GoorianawahAustraliaRecord daily precipitation4.1 mm (0.16 in)16 of 100 (Routine)
AberfoyleAustraliaRecord daily precipitation5.1 mm (0.20 in)16 of 100 (Routine)
CottamCanadaRecord daily precipitation13.7 mm (0.5 in)15 of 100 (Routine)
Gulargambone (Yalcogrin St)AustraliaRecord daily precipitation2.3 mm (0.09 in)13 of 100 (Routine)
IrkutskRussiaRecord high minimum temperature6.0 C (42.8 F)13 of 100 (Routine)
KarlshamnSwedenRecord low minimum temperature-2.0 C (28.4 F)13 of 100 (Routine)
Old Baratta HomesteadAustraliaRecord daily precipitation0.5 mm (0.02 in)12 of 100 (Routine)
Kola-In-MurmanRussiaRecord daily precipitation6.4 mm (0.25 in)12 of 100 (Routine)
YarmouthCanadaRecord low minimum temperature-2.2 C (28.0 F)11 of 100 (Routine)
Setauket StrongUnited StatesRecord daily precipitation8.4 mm (0.33 in)11 of 100 (Routine)
TranebjergDenmarkRecord low minimum temperature0.2 C (32.4 F)10 of 100 (Routine)
HalmstadSwedenRecord low minimum temperature-2.0 C (28.4 F)10 of 100 (Routine)
SuratAustraliaRecord daily precipitation10.9 mm (0.4 in)9 of 100 (Routine)
Linkoeping-MalmslaettSwedenRecord low minimum temperature-3.0 C (26.6 F)9 of 100 (Routine)
BorasSwedenRecord low minimum temperature-6.0 C (21.2 F)9 of 100 (Routine)
SimferopolUkraineRecord low minimum temperature-0.5 C (31.1 F)9 of 100 (Routine)
Tweed Heads Golf ClubAustraliaRecord daily precipitation19.6 mm (0.8 in)8 of 100 (Routine)
Sydney (Observatory Hill)AustraliaRecord low maximum temperature15.5 C (59.9 F)8 of 100 (Routine)
VinelandUnited StatesRecord daily precipitation12.2 mm (0.5 in)8 of 100 (Routine)
Parry SoundCanadaRecord daily precipitation21.8 mm (0.9 in)7 of 100 (Routine)
ConcordUnited StatesRecord low maximum temperature5.6 C (42.1 F)7 of 100 (Routine)
Blue Hill CoopUnited StatesRecord low maximum temperature4.4 C (39.9 F)5 of 100 (Routine)
Crown St. ReservoirAustraliaRecord daily precipitation23.9 mm (0.9 in)2 of 100 (Routine)
Wrixum/FohrGermanyRecord low minimum temperature1.0 C (33.8 F)2 of 100 (Routine)
VastervikSwedenRecord low minimum temperature-3.0 C (26.6 F)2 of 100 (Routine)
World Trade CtrUnited StatesRecord low maximum temperature8.3 C (46.9 F)2 of 100 (Routine)
Ft BidwellUnited StatesRecord daily precipitation10.2 mm (0.4 in)1 of 100 (Routine)
Blue Hill CoopUnited StatesRecord low minimum temperature1.1 C (34.0 F)0 of 100 (Routine)

Counts by Type and Timescale

37 records
Records on 1 May 1917 by type Records set or tied on 1 May 1917 by type: Lowest daily maximum 8, Highest daily minimum 1, Lowest daily minimum 12, Heaviest daily rainfall 15, Heaviest daily snowfall 1. 051015Highest daily maximum: 0Lowest daily maximum: 8Highest daily minimum: 1Lowest daily minimum: 12Heaviest daily rainfall: 15Heaviest daily snowfall: 1Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 1 May 1917 by type: Lowest daily maximum 8, Highest daily minimum 1, Lowest daily minimum 12, Heaviest daily rainfall 15, Heaviest daily snowfall 1.
Records on 1 May 1917 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum8
Highest daily minimum1
Lowest daily minimum12
Heaviest daily rainfall15
Heaviest daily snowfall1
Deepest snow cover0
Records on 1 May 1917 by timescale Records on 1 May 1917 by timescale: all-time 0, monthly 4, daily 33. 010203040all-time: 0monthly: 4daily: 33all-timemonthlydaily
Records on 1 May 1917 by timescale: all-time 0, monthly 4, daily 33.
Records on 1 May 1917 by timescale
TimescaleRecords
all-time0
monthly4
daily33

How Much Records Were Beaten By

31 broken records
Histogram of margins by which records were beaten on 1 May 1917 Margins by which the 31 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 17.0. Ties are not counted. 01020300 to 3: 213 to 5: 55 to 8: 28 to 10: 110 to 13: 113 to 15: 015 to 18: 10 to 33 to 55 to 88 to 1010 to 1313 to 1515 to 18
Margins by which the 31 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 17.0. Ties are not counted.
Histogram of margins by which records were beaten on 1 May 1917
MarginRecords
0 to 321
3 to 55
5 to 82
8 to 101
10 to 131
13 to 150
15 to 181

Top 20 by Significance

1 May 1917
Top 20 records on 1 May 1917 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
1 May 1917Saint John, CAmonthly low min-3.3 C (26.1 F)0.5 C (0.9 F)34 years25 of 100 (Routine)
1 May 1917Portland, USmonthly low max3.3 C (37.9 F)1.1 C (2.0 F)28 years24 of 100 (Routine)
1 May 1917Setauket Strong, USmonthly low max7.8 C (46.0 F)0.5 C (0.9 F)23 years21 of 100 (Routine)
1 May 1917Newark Liberty Intl AP, USdaily low max7.8 C (46.0 F)0.5 C (0.9 F)47 years21 of 100 (Routine)
1 May 1917Nordby (Fano), DKdaily low min-0.2 C (31.6 F)1.6 C (2.9 F)37 years20 of 100 (Routine)
1 May 1917Dubuque River, USmonthly snowfall2.5 cm (1.0 in)1.7 cm (0.7 in)8 years19 of 100 (Routine)
1 May 1917Ny City Cntrl Park, USdaily low max7.2 C (45.0 F)0.6 C (1.1 F)47 years19 of 100 (Routine)
1 May 1917Orillia, CAdaily rain24.4 mm (1.0 in)9.2 mm (0.36 in)0 years17 of 100 (Routine)
1 May 1917Tbilisi, GEdaily rain24.2 mm (1.0 in)10.0 mm (0.4 in)12 years17 of 100 (Routine)
1 May 1917Goorianawah, AUdaily rain4.1 mm (0.16 in)3.6 mm (0.14 in)33 years16 of 100 (Routine)
1 May 1917Aberfoyle, AUdaily rain5.1 mm (0.20 in)5.1 mm (0.20 in)29 years16 of 100 (Routine)
1 May 1917Cottam, CAdaily rain13.7 mm (0.5 in)4.8 mm (0.19 in)26 years15 of 100 (Routine)
1 May 1917Gulargambone (Yalcogrin St), AUdaily rain2.3 mm (0.09 in)2.3 mm (0.09 in)30 years13 of 100 (Routine)
1 May 1917Irkutsk, RUdaily high min6.0 C (42.8 F)3.4 C (6.1 F)8 years13 of 100 (Routine)
1 May 1917Karlshamn, SEdaily low min-2.0 C (28.4 F)1.0 C (1.8 F)24 years13 of 100 (Routine)
1 May 1917Old Baratta Homestead, AUdaily rain0.5 mm (0.02 in)0.5 mm (0.02 in)32 years12 of 100 (Routine)
1 May 1917Kola-In-Murman, RUdaily rain6.4 mm (0.25 in)2.1 mm (0.08 in)4 years12 of 100 (Routine)
1 May 1917Yarmouth, CAdaily low min-2.2 C (28.0 F)0.5 C (0.9 F)20 years11 of 100 (Routine)
1 May 1917Setauket Strong, USdaily rain8.4 mm (0.33 in)1.8 mm (0.07 in)23 years11 of 100 (Routine)
1 May 1917Tranebjerg, DKdaily low min0.2 C (32.4 F)0.5 C (0.9 F)17 years10 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 1917
Records on 05-01 in each year Records set or tied on this calendar date in each year from 1795 to 1917. 1917 had 37 records. 05001,0001,5002,0001795: 11802: 11804: 11814: 11818: 11835: 11836: 11840: 11846: 21847: 11850: 11851: 11857: 11860: 11861: 11864: 21865: 11868: 21872: 11875: 41878: 21879: 21880: 31881: 21884: 11885: 11886: 21887: 21888: 21889: 31890: 21891: 51892: 61893: 21894: 51896: 11897: 41898: 11899: 81900: 11901: 51902: 71903: 91904: 91905: 131906: 121907: 311908: 201909: 491910: 131911: 221912: 181913: 541914: 231915: 271916: 271917: 371918: 341919: 1501920: 1861921: 411922: 921923: 641924: 631925: 1181926: 5001927: 1251928: 1901929: 1421930: 2631931: 5371932: 2201933: 7061934: 3051935: 2761936: 3681937: 2181938: 3041939: 2271940: 7311941: 3331942: 1,0361943: 5261944: 2291945: 3501946: 4151947: 6551948: 7741949: 4051950: 4391951: 8941952: 5571953: 9171954: 1,5061955: 7721956: 1,1061957: 3591958: 4481959: 7641960: 7371961: 5881962: 6151963: 7041964: 3121965: 3601966: 7071967: 9481968: 4261969: 4291970: 1,0751971: 4441972: 5621973: 8411974: 5891975: 2861976: 6731977: 5451978: 1,2021979: 6121980: 5071981: 1,2651982: 5081983: 1,4231984: 6401985: 7891986: 5121987: 1,0981988: 1,0581989: 9491990: 9221991: 6331992: 1,2011993: 1,1011994: 1,2101995: 1,3651996: 1,4391997: 8041998: 9511999: 9322000: 8092001: 1,1062002: 1,2212003: 9642004: 8872005: 1,3202006: 7342007: 8572008: 9792009: 6792010: 1,1512011: 7162012: 7962013: 9762014: 9412015: 5502016: 8442017: 1,1632018: 5192019: 7882020: 1,0992021: 8342022: 3192023: 9122024: 4582025: 4302026: 6231795186818941912192919461963198019972014
Records set or tied on this calendar date in each year from 1795 to 1917. 1917 had 37 records.
Counts for years before the ledger starts come from the same station rules.
Records on 05-01 in each year
YearRecords
17951
18021
18041
18141
18181
18351
18361
18401
18462
18471
18501
18511
18571
18601
18611
18642
18651
18682
18721
18754
18782
18792
18803
18812
18841
18851
18862
18872
18882
18893
18902
18915
18926
18932
18945
18961
18974
18981
18998
19001
19015
19027
19039
19049
190513
190612
190731
190820
190949
191013
191122
191218
191354
191423
191527
191627
191737
191834
1919150
1920186
192141
192292
192364
192463
1925118
1926500
1927125
1928190
1929142
1930263
1931537
1932220
1933706
1934305
1935276
1936368
1937218
1938304
1939227
1940731
1941333
19421,036
1943526
1944229
1945350
1946415
1947655
1948774
1949405
1950439
1951894
1952557
1953917
19541,506
1955772
19561,106
1957359
1958448
1959764
1960737
1961588
1962615
1963704
1964312
1965360
1966707
1967948
1968426
1969429
19701,075
1971444
1972562
1973841
1974589
1975286
1976673
1977545
19781,202
1979612
1980507
19811,265
1982508
19831,423
1984640
1985789
1986512
19871,098
19881,058
1989949
1990922
1991633
19921,201
19931,101
19941,210
19951,365
19961,439
1997804
1998951
1999932
2000809
20011,106
20021,221
2003964
2004887
20051,320
2006734
2007857
2008979
2009679
20101,151
2011716
2012796
2013976
2014941
2015550
2016844
20171,163
2018519
2019788
20201,099
2021834
2022319
2023912
2024458
2025430
2026623

Download the Data

  • Data for records on 1917-05-01: 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).