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Built 2026-10-19 (19 October 2026)

Weather Records on 30 April 1917

25 weather records were set or tied worldwide on 30 April 1917. Highest significance: Tbilisi, GE.

Key Facts for 30 April 1917

  • On 30 April 1917, 25 weather records were set or tied at long-record stations worldwide.
  • 2 were record highs and 16 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 25 daily.
  • Tbilisi set a daily record precipitation of 28.0 mm (1.1 in) on 30 April 1917.
  • Across 165 earlier years (1795 to 2026) the same calendar date averaged 449 records.

Record Map

25 stations
Weather records on 30 April 1917 25 station records on 30 April 1917 are marked on the map, coloured by record type.
25 station records on 30 April 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 30 April 1917: highest significance records shown on the map
StationCountryTypeValueSignificance
TbilisiGeorgiaRecord daily precipitation28.0 mm (1.1 in)36 of 100 (Notable)
St John'sCanadaRecord daily precipitation44.2 mm (1.7 in)32 of 100 (Routine)
HarnosandSwedenRecord low minimum temperature-11.0 C (12.2 F)18 of 100 (Routine)
IdaSouth AfricaRecord daily precipitation13.2 mm (0.5 in)17 of 100 (Routine)
Milwaukee Wb CityUnited StatesRecord daily precipitation32.0 mm (1.3 in)17 of 100 (Routine)
Woody IslandAustraliaRecord daily precipitation34.8 mm (1.4 in)16 of 100 (Routine)
SvegSwedenRecord low minimum temperature-12.5 C (9.5 F)16 of 100 (Routine)
Dubuque RiverUnited StatesRecord daily snowfall3.6 cm (1.4 in)16 of 100 (Routine)
Mount MacedonAustraliaRecord daily precipitation8.4 mm (0.33 in)15 of 100 (Routine)
Linkoeping-MalmslaettSwedenRecord low maximum temperature1.8 C (35.2 F)15 of 100 (Routine)
StockholmSwedenRecord low maximum temperature5.0 C (41.0 F)14 of 100 (Routine)
JonkopingSwedenRecord low maximum temperature3.2 C (37.8 F)13 of 100 (Routine)
BjurakerSwedenRecord low minimum temperature-9.5 C (14.9 F)13 of 100 (Routine)
JokkmokkSwedenRecord low maximum temperature-2.9 C (26.8 F)12 of 100 (Routine)
KaresuandoSwedenRecord low minimum temperature-22.0 C (-7.6 F)12 of 100 (Routine)
Skara 1SwedenRecord low maximum temperature4.0 C (39.2 F)11 of 100 (Routine)
SvegSwedenRecord low maximum temperature2.0 C (35.6 F)11 of 100 (Routine)
KievUkraineRecord low minimum temperature-1.0 C (30.2 F)10 of 100 (Routine)
VastervikSwedenRecord low maximum temperature2.5 C (36.5 F)8 of 100 (Routine)
TartuEstoniaRecord low minimum temperature-4.0 C (24.8 F)7 of 100 (Routine)
Visby_FlygplatsSwedenRecord low maximum temperature2.5 C (36.5 F)5 of 100 (Routine)
Bathurst GaolAustraliaRecord low minimum temperature-2.2 C (28.0 F)3 of 100 (Routine)
Winnemucca APUnited StatesRecord high minimum temperature6.7 C (44.1 F)3 of 100 (Routine)
Wagga Wagga (Kooringal)AustraliaRecord low minimum temperature1.1 C (34.0 F)1 of 100 (Routine)
Jacksonville Wb CityUnited StatesRecord high maximum temperature31.7 C (89.1 F)1 of 100 (Routine)

Counts by Type and Timescale

25 records
Records on 30 April 1917 by type Records set or tied on 30 April 1917 by type: Highest daily maximum 1, Lowest daily maximum 8, Highest daily minimum 1, Lowest daily minimum 8, Heaviest daily rainfall 6, Heaviest daily snowfall 1. 02468Highest daily maximum: 1Lowest daily maximum: 8Highest daily minimum: 1Lowest daily minimum: 8Heaviest daily rainfall: 6Heaviest daily snowfall: 1Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 30 April 1917 by type: Highest daily maximum 1, Lowest daily maximum 8, Highest daily minimum 1, Lowest daily minimum 8, Heaviest daily rainfall 6, Heaviest daily snowfall 1.
Records on 30 April 1917 by type
Record typeRecords
Highest daily maximum1
Lowest daily maximum8
Highest daily minimum1
Lowest daily minimum8
Heaviest daily rainfall6
Heaviest daily snowfall1
Deepest snow cover0
Records on 30 April 1917 by timescale Records on 30 April 1917 by timescale: all-time 0, monthly 0, daily 25. 0102030all-time: 0monthly: 0daily: 25all-timemonthlydaily
Records on 30 April 1917 by timescale: all-time 0, monthly 0, daily 25.
Records on 30 April 1917 by timescale
TimescaleRecords
all-time0
monthly0
daily25

How Much Records Were Beaten By

21 broken records
Histogram of margins by which records were beaten on 30 April 1917 Margins by which the 21 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 31.0. Ties are not counted. 0510150 to 5: 145 to 10: 310 to 15: 115 to 20: 120 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 21 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 31.0. Ties are not counted.
Histogram of margins by which records were beaten on 30 April 1917
MarginRecords
0 to 514
5 to 103
10 to 151
15 to 201
20 to 251
25 to 300
30 to 351

Top 20 by Significance

30 April 1917
Top 20 records on 30 April 1917 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
30 April 1917Tbilisi, GEdaily rain28.0 mm (1.1 in)17.5 mm (0.7 in)14 years36 of 100 (Notable)
30 April 1917St John's, CAdaily rain44.2 mm (1.7 in)20.1 mm (0.8 in)20 years32 of 100 (Routine)
30 April 1917Harnosand, SEdaily low min-11.0 C (12.2 F)4.0 C (7.2 F)18 years18 of 100 (Routine)
30 April 1917Ida, ZAdaily rain13.2 mm (0.5 in)6.6 mm (0.26 in)20 years17 of 100 (Routine)
30 April 1917Milwaukee Wb City, USdaily rain32.0 mm (1.3 in)5.3 mm (0.21 in)28 years17 of 100 (Routine)
30 April 1917Woody Island, AUdaily rain34.8 mm (1.4 in)12.7 mm (0.5 in)12 years16 of 100 (Routine)
30 April 1917Sveg, SEdaily low min-12.5 C (9.5 F)2.0 C (3.6 F)30 years16 of 100 (Routine)
30 April 1917Dubuque River, USdaily snowfall3.6 cm (1.4 in)3.1 cm (1.2 in)10 years16 of 100 (Routine)
30 April 1917Mount Macedon, AUdaily rain8.4 mm (0.33 in)5.1 mm (0.20 in)24 years15 of 100 (Routine)
30 April 1917Linkoeping-Malmslaett, SEdaily low max1.8 C (35.2 F)2.7 C (4.9 F)23 years15 of 100 (Routine)
30 April 1917Stockholm, SEdaily low max5.0 C (41.0 F)1.0 C (1.8 F)30 years14 of 100 (Routine)
30 April 1917Jonkoping, SEdaily low max3.2 C (37.8 F)0.8 C (1.4 F)30 years13 of 100 (Routine)
30 April 1917Bjuraker, SEdaily low min-9.5 C (14.9 F)0.5 C (0.9 F)30 years13 of 100 (Routine)
30 April 1917Jokkmokk, SEdaily low max-2.9 C (26.8 F)0.4 C (0.7 F)30 years12 of 100 (Routine)
30 April 1917Karesuando, SEdaily low min-22.0 C (-7.6 F)3.0 C (5.4 F)16 years12 of 100 (Routine)
30 April 1917Skara 1, SEdaily low max4.0 C (39.2 F)0.5 C (0.9 F)23 years11 of 100 (Routine)
30 April 1917Sveg, SEdaily low max2.0 C (35.6 F)0.5 C (0.9 F)23 years11 of 100 (Routine)
30 April 1917Kiev, UAdaily low min-1.0 C (30.2 F)0.3 C (0.5 F)23 years10 of 100 (Routine)
30 April 1917Vastervik, SEdaily low max2.5 C (36.5 F)1.1 C (2.0 F)10 years8 of 100 (Routine)
30 April 1917Tartu, EEdaily low min-4.0 C (24.8 F)0.1 C (0.2 F)15 years7 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 04-30 in each year Records set or tied on this calendar date in each year from 1795 to 1917. 1917 had 25 records. 05001,0001,5002,0001795: 11804: 11809: 11812: 11814: 21833: 11840: 11848: 11850: 11853: 11854: 11856: 11859: 11862: 11864: 11865: 11866: 31872: 11873: 11874: 21876: 11878: 41879: 21880: 11881: 11882: 11884: 11885: 11886: 51888: 11889: 11891: 51892: 71894: 11895: 51896: 31897: 21898: 61899: 111900: 41901: 81902: 131903: 211904: 111905: 91906: 161907: 351908: 281909: 741910: 171911: 191912: 181913: 621914: 81915: 201916: 211917: 251918: 281919: 1301920: 701921: 541922: 1381923: 421924: 961925: 2101926: 3311927: 1271928: 1301929: 1191930: 2321931: 5481932: 1451933: 4221934: 4431935: 3271936: 3731937: 2281938: 2821939: 2681940: 5261941: 4841942: 1,1631943: 4701944: 2861945: 3141946: 3011947: 3301948: 9121949: 4471950: 6711951: 7831952: 4351953: 6351954: 1,2241955: 1,2521956: 9081957: 4011958: 4821959: 5751960: 5071961: 3811962: 6171963: 7301964: 3391965: 4881966: 7401967: 9141968: 9281969: 5871970: 1,1891971: 3651972: 4971973: 3981974: 8221975: 4681976: 7831977: 5251978: 6311979: 6751980: 5451981: 1,3421982: 5041983: 1,1541984: 1,5191985: 6501986: 6601987: 1,4371988: 8081989: 6741990: 9771991: 8281992: 1,8081993: 7651994: 1,4991995: 1,0071996: 1,6371997: 7641998: 8571999: 1,0122000: 1,0462001: 9002002: 1,1712003: 9272004: 7032005: 1,1132006: 7782007: 9962008: 1,2602009: 6602010: 9212011: 6362012: 8192013: 7322014: 9462015: 3802016: 9692017: 1,4502018: 7082019: 7002020: 1,4762021: 1,1672022: 4992023: 7822024: 7052025: 4892026: 3651795187218951912192919461963198019972014
Records set or tied on this calendar date in each year from 1795 to 1917. 1917 had 25 records.
Counts for years before the ledger starts come from the same station rules.
Records on 04-30 in each year
YearRecords
17951
18041
18091
18121
18142
18331
18401
18481
18501
18531
18541
18561
18591
18621
18641
18651
18663
18721
18731
18742
18761
18784
18792
18801
18811
18821
18841
18851
18865
18881
18891
18915
18927
18941
18955
18963
18972
18986
189911
19004
19018
190213
190321
190411
19059
190616
190735
190828
190974
191017
191119
191218
191362
19148
191520
191621
191725
191828
1919130
192070
192154
1922138
192342
192496
1925210
1926331
1927127
1928130
1929119
1930232
1931548
1932145
1933422
1934443
1935327
1936373
1937228
1938282
1939268
1940526
1941484
19421,163
1943470
1944286
1945314
1946301
1947330
1948912
1949447
1950671
1951783
1952435
1953635
19541,224
19551,252
1956908
1957401
1958482
1959575
1960507
1961381
1962617
1963730
1964339
1965488
1966740
1967914
1968928
1969587
19701,189
1971365
1972497
1973398
1974822
1975468
1976783
1977525
1978631
1979675
1980545
19811,342
1982504
19831,154
19841,519
1985650
1986660
19871,437
1988808
1989674
1990977
1991828
19921,808
1993765
19941,499
19951,007
19961,637
1997764
1998857
19991,012
20001,046
2001900
20021,171
2003927
2004703
20051,113
2006778
2007996
20081,260
2009660
2010921
2011636
2012819
2013732
2014946
2015380
2016969
20171,450
2018708
2019700
20201,476
20211,167
2022499
2023782
2024705
2025489
2026365

Download the Data

  • Data for records on 1917-04-30: 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).