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Weather Records on 17 September 1918

41 weather records were set or tied worldwide on 17 September 1918. Highest significance: Stockholm, SE.

Key Facts for 17 September 1918

  • On 17 September 1918, 41 weather records were set or tied at long-record stations worldwide.
  • 10 were record highs and 12 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 41 daily.
  • Stockholm set a daily record precipitation of 18.2 mm (0.7 in) on 17 September 1918.
  • Across 164 earlier years (1796 to 2026) the same calendar date averaged 425 records.

Record Map

41 stations
Weather records on 17 September 1918 41 station records on 17 September 1918 are marked on the map, coloured by record type.
41 station records on 17 September 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 17 September 1918: highest significance records shown on the map
StationCountryTypeValueSignificance
StockholmSwedenRecord daily precipitation18.2 mm (0.7 in)20 of 100 (Routine)
Skara 1SwedenRecord daily precipitation17.3 mm (0.7 in)20 of 100 (Routine)
VingaSwedenRecord daily precipitation23.0 mm (0.9 in)20 of 100 (Routine)
VanersborgSwedenRecord daily precipitation17.5 mm (0.7 in)20 of 100 (Routine)
OrebroSwedenRecord daily precipitation20.1 mm (0.8 in)20 of 100 (Routine)
Linkoeping-MalmslaettSwedenRecord daily precipitation15.3 mm (0.6 in)20 of 100 (Routine)
BorasSwedenRecord daily precipitation19.0 mm (0.7 in)20 of 100 (Routine)
FalunSwedenRecord daily precipitation14.7 mm (0.6 in)20 of 100 (Routine)
LandsortSwedenRecord daily precipitation11.9 mm (0.5 in)19 of 100 (Routine)
Olands Norra UddeSwedenRecord daily precipitation7.0 mm (0.28 in)18 of 100 (Routine)
SonnblickAustriaRecord high maximum temperature7.6 C (45.7 F)15 of 100 (Routine)
HalmstadSwedenRecord daily precipitation15.5 mm (0.6 in)15 of 100 (Routine)
LjungbySwedenRecord daily precipitation14.5 mm (0.6 in)15 of 100 (Routine)
Huron Rgnl APUnited StatesRecord daily precipitation2.8 mm (0.11 in)15 of 100 (Routine)
PlauenGermanyRecord high maximum temperature28.8 C (83.8 F)14 of 100 (Routine)
Morris W Cntrl Rsch & OutreachUnited StatesRecord low maximum temperature10.0 C (50.0 F)14 of 100 (Routine)
Lexington Bluegrass APUnited StatesRecord low maximum temperature13.9 C (57.0 F)14 of 100 (Routine)
SonnblickAustriaRecord high minimum temperature2.5 C (36.5 F)13 of 100 (Routine)
Linkoeping-MalmslaettSwedenRecord low maximum temperature10.0 C (50.0 F)13 of 100 (Routine)
GavleSwedenRecord daily precipitation11.8 mm (0.5 in)13 of 100 (Routine)
CornwallUnited StatesRecord daily precipitation15.5 mm (0.6 in)13 of 100 (Routine)
Kirchdorf/PoelGermanyRecord high maximum temperature25.4 C (77.7 F)12 of 100 (Routine)
Vasteras-HassloSwedenRecord daily precipitation17.4 mm (0.7 in)12 of 100 (Routine)
SaentisSwitzerlandRecord high minimum temperature8.6 C (47.5 F)12 of 100 (Routine)
AltonCanadaRecord low maximum temperature11.7 C (53.1 F)11 of 100 (Routine)
ArnsbergGermanyRecord high minimum temperature16.9 C (62.4 F)10 of 100 (Routine)
Vasteras-HassloSwedenRecord low maximum temperature11.0 C (51.8 F)10 of 100 (Routine)
Jamberoo (Lorna)AustraliaRecord daily precipitation24.6 mm (1.0 in)9 of 100 (Routine)
AltastenbergGermanyRecord high minimum temperature14.4 C (57.9 F)9 of 100 (Routine)
StockholmSwedenRecord low maximum temperature11.0 C (51.8 F)8 of 100 (Routine)
Kirchdorf/PoelGermanyRecord high minimum temperature13.5 C (56.3 F)7 of 100 (Routine)
MahackalaRussiaRecord high minimum temperature20.9 C (69.6 F)7 of 100 (Routine)
Munchen-NymphenburgGermanyRecord high maximum temperature27.7 C (81.9 F)5 of 100 (Routine)
BjurakerSwedenRecord daily precipitation7.5 mm (0.30 in)4 of 100 (Routine)
LucknowCanadaRecord low minimum temperature1.1 C (34.0 F)3 of 100 (Routine)
Port ArthurCanadaRecord low minimum temperature-1.1 C (30.0 F)2 of 100 (Routine)
OrebroSwedenRecord low maximum temperature10.0 C (50.0 F)2 of 100 (Routine)
Owen SoundCanadaRecord low minimum temperature5.0 C (41.0 F)1 of 100 (Routine)
VastervikSwedenRecord low maximum temperature12.5 C (54.5 F)1 of 100 (Routine)
Skara 1SwedenRecord low maximum temperature11.0 C (51.8 F)1 of 100 (Routine)
Gotska SandonSwedenRecord daily precipitation4.6 mm (0.18 in)1 of 100 (Routine)

Counts by Type and Timescale

41 records
Records on 17 September 1918 by type Records set or tied on 17 September 1918 by type: Highest daily maximum 4, Lowest daily maximum 9, Highest daily minimum 6, Lowest daily minimum 3, Heaviest daily rainfall 19. 05101520Highest daily maximum: 4Lowest daily maximum: 9Highest daily minimum: 6Lowest daily minimum: 3Heaviest daily rainfall: 19Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 17 September 1918 by type: Highest daily maximum 4, Lowest daily maximum 9, Highest daily minimum 6, Lowest daily minimum 3, Heaviest daily rainfall 19.
Records on 17 September 1918 by type
Record typeRecords
Highest daily maximum4
Lowest daily maximum9
Highest daily minimum6
Lowest daily minimum3
Heaviest daily rainfall19
Heaviest daily snowfall0
Deepest snow cover0
Records on 17 September 1918 by timescale Records on 17 September 1918 by timescale: all-time 0, monthly 0, daily 41. 0204060all-time: 0monthly: 0daily: 41all-timemonthlydaily
Records on 17 September 1918 by timescale: all-time 0, monthly 0, daily 41.
Records on 17 September 1918 by timescale
TimescaleRecords
all-time0
monthly0
daily41

How Much Records Were Beaten By

34 broken records
Histogram of margins by which records were beaten on 17 September 1918 Margins by which the 34 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 13.0. Ties are not counted. 0510150 to 2: 152 to 4: 104 to 6: 46 to 8: 28 to 10: 110 to 12: 012 to 14: 20 to 22 to 44 to 66 to 88 to 1010 to 1212 to 14
Margins by which the 34 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 13.0. Ties are not counted.
Histogram of margins by which records were beaten on 17 September 1918
MarginRecords
0 to 215
2 to 410
4 to 64
6 to 82
8 to 101
10 to 120
12 to 142

Top 20 by Significance

17 September 1918
Top 20 records on 17 September 1918 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
17 September 1918Stockholm, SEdaily rain18.2 mm (0.7 in)8.1 mm (0.32 in)55 years20 of 100 (Routine)
17 September 1918Skara 1, SEdaily rain17.3 mm (0.7 in)5.7 mm (0.22 in)57 years20 of 100 (Routine)
17 September 1918Vinga, SEdaily rain23.0 mm (0.9 in)13.0 mm (0.5 in)21 years20 of 100 (Routine)
17 September 1918Vanersborg, SEdaily rain17.5 mm (0.7 in)4.6 mm (0.18 in)54 years20 of 100 (Routine)
17 September 1918Orebro, SEdaily rain20.1 mm (0.8 in)6.6 mm (0.26 in)37 years20 of 100 (Routine)
17 September 1918Linkoeping-Malmslaett, SEdaily rain15.3 mm (0.6 in)4.0 mm (0.16 in)37 years20 of 100 (Routine)
17 September 1918Boras, SEdaily rain19.0 mm (0.7 in)12.6 mm (0.5 in)4 years20 of 100 (Routine)
17 September 1918Falun, SEdaily rain14.7 mm (0.6 in)3.0 mm (0.12 in)41 years20 of 100 (Routine)
17 September 1918Landsort, SEdaily rain11.9 mm (0.5 in)4.8 mm (0.19 in)18 years19 of 100 (Routine)
17 September 1918Olands Norra Udde, SEdaily rain7.0 mm (0.28 in)1.5 mm (0.06 in)37 years18 of 100 (Routine)
17 September 1918Sonnblick, ATdaily high max7.6 C (45.7 F)2.2 C (4.0 F)25 years15 of 100 (Routine)
17 September 1918Halmstad, SEdaily rain15.5 mm (0.6 in)3.5 mm (0.14 in)16 years15 of 100 (Routine)
17 September 1918Ljungby, SEdaily rain14.5 mm (0.6 in)0.4 mm (0.02 in)37 years15 of 100 (Routine)
17 September 1918Huron Rgnl AP, USdaily rain2.8 mm (0.11 in)1.5 mm (0.06 in)36 years15 of 100 (Routine)
17 September 1918Plauen, DEdaily high max28.8 C (83.8 F)1.2 C (2.2 F)32 years14 of 100 (Routine)
17 September 1918Morris W Cntrl Rsch & Outreach, USdaily low max10.0 C (50.0 F)2.2 C (4.0 F)28 years14 of 100 (Routine)
17 September 1918Lexington Bluegrass AP, USdaily low max13.9 C (57.0 F)2.8 C (5.0 F)16 years14 of 100 (Routine)
17 September 1918Sonnblick, ATdaily high min2.5 C (36.5 F)1.3 C (2.3 F)25 years13 of 100 (Routine)
17 September 1918Linkoeping-Malmslaett, SEdaily low max10.0 C (50.0 F)2.0 C (3.6 F)18 years13 of 100 (Routine)
17 September 1918Gavle, SEdaily rain11.8 mm (0.5 in)2.0 mm (0.08 in)16 years13 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

1796 to 1918
Records on 09-17 in each year Records set or tied on this calendar date in each year from 1796 to 1918. 1918 had 41 records. 05001,0001,5001796: 11797: 11805: 11833: 11834: 11837: 21845: 11847: 31848: 11850: 11851: 21853: 21854: 21859: 11862: 11867: 11870: 11871: 11872: 11873: 11874: 11875: 11877: 11881: 11882: 21884: 31885: 31886: 61888: 21889: 81891: 11893: 31894: 11895: 41896: 91897: 41898: 71899: 11900: 41901: 51902: 51903: 281904: 21905: 171906: 101907: 151908: 131909: 71910: 381911: 151912: 171913: 281914: 381915: 481916: 401917: 2551918: 411919: 211920: 401921: 661922: 471923: 1591924: 801925: 3381926: 1541927: 4201928: 781929: 1681930: 1471931: 5641932: 4251933: 4151934: 2461935: 3211936: 2191937: 4631938: 3631939: 2941940: 3261941: 3281942: 5811943: 5131944: 4031945: 6141946: 6201947: 6801948: 6301949: 2921950: 4121951: 3591952: 2631953: 3441954: 4491955: 6491956: 4371957: 4051958: 8061959: 1,2101960: 3851961: 6571962: 4321963: 2971964: 5591965: 1,3941966: 5231967: 3311968: 6911969: 3521970: 4121971: 8981972: 5561973: 6381974: 4911975: 4781976: 6361977: 6411978: 7641979: 8041980: 7941981: 1,1551982: 6061983: 8621984: 1,0061985: 4481986: 1,3141987: 9261988: 9821989: 8631990: 6501991: 1,4071992: 6861993: 9501994: 9861995: 1,1451996: 1,3421997: 1,0571998: 1,1371999: 1,1022000: 1,3182001: 8952002: 1,0252003: 5862004: 8722005: 1,0422006: 1,3442007: 7522008: 8862009: 8712010: 9072011: 1,1162012: 5972013: 1,2532014: 5712015: 9532016: 7072017: 4552018: 8992019: 7742020: 6512021: 3452022: 3132023: 6462024: 9542025: 6342026: 9681796187118961913193019471964198119982015
Records set or tied on this calendar date in each year from 1796 to 1918. 1918 had 41 records.
Counts for years before the ledger starts come from the same station rules.
Records on 09-17 in each year
YearRecords
17961
17971
18051
18331
18341
18372
18451
18473
18481
18501
18512
18532
18542
18591
18621
18671
18701
18711
18721
18731
18741
18751
18771
18811
18822
18843
18853
18866
18882
18898
18911
18933
18941
18954
18969
18974
18987
18991
19004
19015
19025
190328
19042
190517
190610
190715
190813
19097
191038
191115
191217
191328
191438
191548
191640
1917255
191841
191921
192040
192166
192247
1923159
192480
1925338
1926154
1927420
192878
1929168
1930147
1931564
1932425
1933415
1934246
1935321
1936219
1937463
1938363
1939294
1940326
1941328
1942581
1943513
1944403
1945614
1946620
1947680
1948630
1949292
1950412
1951359
1952263
1953344
1954449
1955649
1956437
1957405
1958806
19591,210
1960385
1961657
1962432
1963297
1964559
19651,394
1966523
1967331
1968691
1969352
1970412
1971898
1972556
1973638
1974491
1975478
1976636
1977641
1978764
1979804
1980794
19811,155
1982606
1983862
19841,006
1985448
19861,314
1987926
1988982
1989863
1990650
19911,407
1992686
1993950
1994986
19951,145
19961,342
19971,057
19981,137
19991,102
20001,318
2001895
20021,025
2003586
2004872
20051,042
20061,344
2007752
2008886
2009871
2010907
20111,116
2012597
20131,253
2014571
2015953
2016707
2017455
2018899
2019774
2020651
2021345
2022313
2023646
2024954
2025634
2026968

Download the Data

  • Data for records on 1918-09-17: 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).