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Built 2026-10-19 (19 October 2026)

Weather Records on 15 April 1917

35 weather records were set or tied worldwide on 15 April 1917. Highest significance: Walsingham 1, ZA.

Key Facts for 15 April 1917

  • On 15 April 1917, 35 weather records were set or tied at long-record stations worldwide.
  • 3 were record highs and 15 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 34 daily.
  • Walsingham 1 set a daily record precipitation of 40.6 mm (1.6 in) on 15 April 1917.
  • Across 159 earlier years (1801 to 2026) the same calendar date averaged 496 records.

Record Map

35 stations
Weather records on 15 April 1917 35 station records on 15 April 1917 are marked on the map, coloured by record type.
35 station records on 15 April 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 15 April 1917: highest significance records shown on the map
StationCountryTypeValueSignificance
Walsingham 1South AfricaRecord daily precipitation40.6 mm (1.6 in)49 of 100 (Notable)
MettenGermanyRecord daily precipitation27.0 mm (1.1 in)48 of 100 (Notable)
Bad MuskauGermanyRecord daily precipitation25.1 mm (1.0 in)36 of 100 (Notable)
JansenvilleSouth AfricaRecord daily precipitation31.0 mm (1.2 in)36 of 100 (Notable)
Sable Island East EndCanadaRecord daily precipitation31.8 mm (1.3 in)31 of 100 (Routine)
GorlitzGermanyRecord daily precipitation18.0 mm (0.7 in)20 of 100 (Routine)
Bamberg (Sternwarte)GermanyRecord daily precipitation11.7 mm (0.5 in)20 of 100 (Routine)
PlauenGermanyRecord daily precipitation15.9 mm (0.6 in)20 of 100 (Routine)
Aberdeen Rd (Sar)South AfricaRecord daily precipitation21.6 mm (0.9 in)20 of 100 (Routine)
LichtentanneGermanyRecord daily precipitation17.8 mm (0.7 in)20 of 100 (Routine)
HaldenNorwayRecord snow depth1.0 cm (0.4 in)18 of 100 (Routine)
NicosiaCyprusRecord high maximum temperature35.0 C (95.0 F)16 of 100 (Routine)
Ft BidwellUnited StatesRecord low maximum temperature3.3 C (37.9 F)16 of 100 (Routine)
Cape Otway LighthouseAustraliaRecord low maximum temperature13.6 C (56.5 F)15 of 100 (Routine)
YarmouthCanadaRecord low minimum temperature-2.8 C (27.0 F)15 of 100 (Routine)
VanersborgSwedenRecord daily precipitation11.9 mm (0.5 in)15 of 100 (Routine)
Heinersreuth-VollhofGermanyRecord daily precipitation14.5 mm (0.6 in)14 of 100 (Routine)
OudtshoornSouth AfricaRecord daily precipitation24.9 mm (1.0 in)11 of 100 (Routine)
San Diego WboUnited StatesRecord low maximum temperature13.9 C (57.0 F)11 of 100 (Routine)
BuffaloUnited StatesRecord low maximum temperature0.6 C (33.1 F)11 of 100 (Routine)
Lincoln UNIV Pwr PltUnited StatesRecord low maximum temperature5.0 C (41.0 F)9 of 100 (Routine)
Cobar Post OfficeAustraliaRecord low maximum temperature18.9 C (66.0 F)6 of 100 (Routine)
AstrakanRussiaRecord high minimum temperature11.2 C (52.2 F)6 of 100 (Routine)
Milwaukee Wb CityUnited StatesRecord low maximum temperature2.8 C (37.0 F)4 of 100 (Routine)
BarrieCanadaRecord low maximum temperature3.3 C (37.9 F)3 of 100 (Routine)
Parry SoundCanadaRecord daily snowfall0.5 cm (0.2 in)3 of 100 (Routine)
Portland Rfc CityUnited StatesRecord low maximum temperature7.2 C (45.0 F)3 of 100 (Routine)
Adelaide West TerraceAustraliaRecord low minimum temperature6.9 C (44.4 F)2 of 100 (Routine)
Ladismith (Tnk)South AfricaRecord daily precipitation25.4 mm (1.0 in)2 of 100 (Routine)
IdaSouth AfricaRecord daily precipitation8.9 mm (0.35 in)2 of 100 (Routine)
Port DoverCanadaRecord low minimum temperature-4.4 C (24.1 F)1 of 100 (Routine)
Pointe Au PereCanadaRecord high minimum temperature0.6 C (33.1 F)1 of 100 (Routine)
Cleveland 2717 EuclidUnited StatesRecord low maximum temperature2.8 C (37.0 F)1 of 100 (Routine)
Morgantown 1United StatesRecord low minimum temperature-3.3 C (26.1 F)1 of 100 (Routine)
Concordia ASOSUnited StatesRecord low maximum temperature7.8 C (46.0 F)1 of 100 (Routine)

Counts by Type and Timescale

35 records
Records on 15 April 1917 by type Records set or tied on 15 April 1917 by type: Highest daily maximum 1, Lowest daily maximum 11, Highest daily minimum 2, Lowest daily minimum 4, Heaviest daily rainfall 15, Heaviest daily snowfall 1, Deepest snow cover 1. 051015Highest daily maximum: 1Lowest daily maximum: 11Highest daily minimum: 2Lowest daily minimum: 4Heaviest daily rainfall: 15Heaviest daily snowfall: 1Deepest snow cover: 1Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 15 April 1917 by type: Highest daily maximum 1, Lowest daily maximum 11, Highest daily minimum 2, Lowest daily minimum 4, Heaviest daily rainfall 15, Heaviest daily snowfall 1, Deepest snow cover 1.
Records on 15 April 1917 by type
Record typeRecords
Highest daily maximum1
Lowest daily maximum11
Highest daily minimum2
Lowest daily minimum4
Heaviest daily rainfall15
Heaviest daily snowfall1
Deepest snow cover1
Records on 15 April 1917 by timescale Records on 15 April 1917 by timescale: all-time 0, monthly 1, daily 34. 010203040all-time: 0monthly: 1daily: 34all-timemonthlydaily
Records on 15 April 1917 by timescale: all-time 0, monthly 1, daily 34.
Records on 15 April 1917 by timescale
TimescaleRecords
all-time0
monthly1
daily34

How Much Records Were Beaten By

23 broken records
Histogram of margins by which records were beaten on 15 April 1917 Margins by which the 23 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 31.7. Ties are not counted. 0510150 to 5: 125 to 10: 310 to 15: 415 to 20: 220 to 25: 125 to 30: 030 to 35: 10 to 55 to 1010 to 1515 to 2020 to 2525 to 3030 to 35
Margins by which the 23 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 31.7. Ties are not counted.
Histogram of margins by which records were beaten on 15 April 1917
MarginRecords
0 to 512
5 to 103
10 to 154
15 to 202
20 to 251
25 to 300
30 to 351

Top 20 by Significance

15 April 1917
Top 20 records on 15 April 1917 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
15 April 1917Walsingham 1, ZAdaily rain40.6 mm (1.6 in)31.7 mm (1.2 in)29 years49 of 100 (Notable)
15 April 1917Metten, DEdaily rain27.0 mm (1.1 in)22.9 mm (0.9 in)19 years48 of 100 (Notable)
15 April 1917Bad Muskau, DEdaily rain25.1 mm (1.0 in)13.4 mm (0.5 in)8 years36 of 100 (Notable)
15 April 1917Jansenville, ZAdaily rain31.0 mm (1.2 in)15.8 mm (0.6 in)35 years36 of 100 (Notable)
15 April 1917Sable Island East End, CAdaily rain31.8 mm (1.3 in)17.6 mm (0.7 in)28 years31 of 100 (Routine)
15 April 1917Gorlitz, DEdaily rain18.0 mm (0.7 in)11.0 mm (0.4 in)34 years20 of 100 (Routine)
15 April 1917Bamberg (Sternwarte), DEdaily rain11.7 mm (0.5 in)5.2 mm (0.20 in)34 years20 of 100 (Routine)
15 April 1917Plauen, DEdaily rain15.9 mm (0.6 in)9.7 mm (0.38 in)10 years20 of 100 (Routine)
15 April 1917Aberdeen Rd (Sar), ZAdaily rain21.6 mm (0.9 in)11.4 mm (0.4 in)29 years20 of 100 (Routine)
15 April 1917Lichtentanne, DEdaily rain17.8 mm (0.7 in)7.5 mm (0.30 in)0 years20 of 100 (Routine)
15 April 1917Halden, NOdaily snow depth1.0 cm (0.4 in)1.0 cm (0.4 in)34 years18 of 100 (Routine)
15 April 1917Nicosia, CYmonthly high max35.0 C (95.0 F)0.6 C (1.1 F)7 years16 of 100 (Routine)
15 April 1917Ft Bidwell, USdaily low max3.3 C (37.9 F)1.1 C (2.0 F)36 years16 of 100 (Routine)
15 April 1917Cape Otway Lighthouse, AUdaily low max13.6 C (56.5 F)0.3 C (0.5 F)35 years15 of 100 (Routine)
15 April 1917Yarmouth, CAdaily low min-2.8 C (27.0 F)0.6 C (1.1 F)32 years15 of 100 (Routine)
15 April 1917Vanersborg, SEdaily rain11.9 mm (0.5 in)2.6 mm (0.10 in)17 years15 of 100 (Routine)
15 April 1917Heinersreuth-Vollhof, DEdaily rain14.5 mm (0.6 in)0.5 mm (0.02 in)34 years14 of 100 (Routine)
15 April 1917Oudtshoorn, ZAdaily rain24.9 mm (1.0 in)3.3 mm (0.13 in)10 years11 of 100 (Routine)
15 April 1917San Diego Wbo, USdaily low max13.9 C (57.0 F)0.5 C (0.9 F)22 years11 of 100 (Routine)
15 April 1917Buffalo, USdaily low max0.6 C (33.1 F)0.5 C (0.9 F)23 years11 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

1801 to 1917
Records on 04-15 in each year Records set or tied on this calendar date in each year from 1801 to 1917. 1917 had 35 records. 05001,0001,5002,0001801: 11817: 11820: 11844: 11845: 11847: 11849: 11853: 21855: 21858: 11862: 31865: 31866: 11868: 11869: 21873: 11874: 11876: 11880: 11882: 11885: 31886: 11887: 31889: 21890: 31891: 21892: 81893: 21894: 11896: 21897: 11898: 21899: 41900: 91901: 21902: 41903: 81904: 391905: 111906: 201907: 181908: 151909: 181910: 161911: 201912: 241913: 391914: 171915: 131916: 151917: 351918: 401919: 221920: 501921: 591922: 941923: 1781924: 1721925: 1681926: 4531927: 3211928: 6311929: 911930: 2891931: 3881932: 1501933: 3001934: 3391935: 5151936: 4391937: 2771938: 5961939: 7891940: 5811941: 6281942: 5251943: 1,0371944: 3131945: 7831946: 2451947: 5321948: 3061949: 4191950: 5681951: 5041952: 3571953: 4751954: 8961955: 4841956: 7501957: 3781958: 4581959: 3141960: 3191961: 8771962: 7331963: 7141964: 3821965: 5041966: 4641967: 5991968: 4761969: 5551970: 8411971: 6401972: 8961973: 6671974: 3851975: 7801976: 1,5661977: 6491978: 4261979: 3701980: 1,0661981: 7241982: 9551983: 1,3431984: 6121985: 7881986: 1,1401987: 5791988: 8391989: 8361990: 8371991: 7691992: 7831993: 1,1561994: 8351995: 8051996: 1,1731997: 1,0311998: 1,7521999: 1,2492000: 1,1632001: 1,0432002: 1,8662003: 1,7602004: 7612005: 5832006: 1,6372007: 1,7762008: 1,1572009: 8532010: 8042011: 1,1622012: 1,0072013: 1,1462014: 1,7212015: 7392016: 6022017: 4742018: 1,9132019: 6102020: 1,0682021: 4942022: 1,1452023: 9122024: 1,0962025: 8602026: 1,1181801187418991915193119471963197919952011
Records set or tied on this calendar date in each year from 1801 to 1917. 1917 had 35 records.
Counts for years before the ledger starts come from the same station rules.
Records on 04-15 in each year
YearRecords
18011
18171
18201
18441
18451
18471
18491
18532
18552
18581
18623
18653
18661
18681
18692
18731
18741
18761
18801
18821
18853
18861
18873
18892
18903
18912
18928
18932
18941
18962
18971
18982
18994
19009
19012
19024
19038
190439
190511
190620
190718
190815
190918
191016
191120
191224
191339
191417
191513
191615
191735
191840
191922
192050
192159
192294
1923178
1924172
1925168
1926453
1927321
1928631
192991
1930289
1931388
1932150
1933300
1934339
1935515
1936439
1937277
1938596
1939789
1940581
1941628
1942525
19431,037
1944313
1945783
1946245
1947532
1948306
1949419
1950568
1951504
1952357
1953475
1954896
1955484
1956750
1957378
1958458
1959314
1960319
1961877
1962733
1963714
1964382
1965504
1966464
1967599
1968476
1969555
1970841
1971640
1972896
1973667
1974385
1975780
19761,566
1977649
1978426
1979370
19801,066
1981724
1982955
19831,343
1984612
1985788
19861,140
1987579
1988839
1989836
1990837
1991769
1992783
19931,156
1994835
1995805
19961,173
19971,031
19981,752
19991,249
20001,163
20011,043
20021,866
20031,760
2004761
2005583
20061,637
20071,776
20081,157
2009853
2010804
20111,162
20121,007
20131,146
20141,721
2015739
2016602
2017474
20181,913
2019610
20201,068
2021494
20221,145
2023912
20241,096
2025860
20261,118

Download the Data

  • Data for records on 1917-04-15: 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).