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Weather Records on 11 May 1909

12 weather records were set or tied worldwide on 11 May 1909. Highest significance: Durban-Botanical Gardens, ZA.

Key Facts for 11 May 1909

  • On 11 May 1909, 12 weather records were set or tied at long-record stations worldwide.
  • 3 were record highs and 4 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 12 daily.
  • Durban-Botanical Gardens set a daily record precipitation of 27.7 mm (1.1 in) on 11 May 1909.
  • Across 156 earlier years (1814 to 2026) the same calendar date averaged 466 records.

Record Map

12 stations
Weather records on 11 May 1909 12 station records on 11 May 1909 are marked on the map, coloured by record type.
12 station records on 11 May 1909 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 11 May 1909: highest significance records shown on the map
StationCountryTypeValueSignificance
Durban-Botanical GardensSouth AfricaRecord daily precipitation27.7 mm (1.1 in)33 of 100 (Routine)
ChathamCanadaRecord high minimum temperature13.9 C (57.0 F)21 of 100 (Routine)
Pointe Au PereCanadaRecord daily precipitation33.5 mm (1.3 in)19 of 100 (Routine)
Port DoverCanadaRecord daily precipitation19.3 mm (0.8 in)13 of 100 (Routine)
Portland Rfc CityUnited StatesRecord low maximum temperature12.8 C (55.0 F)11 of 100 (Routine)
Saint JohnCanadaRecord daily precipitation18.8 mm (0.7 in)10 of 100 (Routine)
HalifaxCanadaRecord high minimum temperature7.2 C (45.0 F)9 of 100 (Routine)
Little Rock St CapitolUnited StatesRecord low minimum temperature8.9 C (48.0 F)9 of 100 (Routine)
Kei Road (Pol)South AfricaRecord daily precipitation3.0 mm (0.12 in)8 of 100 (Routine)
Chattanooga Wb CityUnited StatesRecord low maximum temperature20.0 C (68.0 F)5 of 100 (Routine)
Winnemucca APUnited StatesRecord low minimum temperature-6.7 C (19.9 F)2 of 100 (Routine)
CharlottetownCanadaRecord high minimum temperature10.0 C (50.0 F)1 of 100 (Routine)

Counts by Type and Timescale

12 records
Records on 11 May 1909 by type Records set or tied on 11 May 1909 by type: Lowest daily maximum 2, Highest daily minimum 3, Lowest daily minimum 2, Heaviest daily rainfall 5. 0246Highest daily maximum: 0Lowest daily maximum: 2Highest daily minimum: 3Lowest daily minimum: 2Heaviest daily rainfall: 5Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 11 May 1909 by type: Lowest daily maximum 2, Highest daily minimum 3, Lowest daily minimum 2, Heaviest daily rainfall 5.
Records on 11 May 1909 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum2
Highest daily minimum3
Lowest daily minimum2
Heaviest daily rainfall5
Heaviest daily snowfall0
Deepest snow cover0
Records on 11 May 1909 by timescale Records on 11 May 1909 by timescale: all-time 0, monthly 0, daily 12. 051015all-time: 0monthly: 0daily: 12all-timemonthlydaily
Records on 11 May 1909 by timescale: all-time 0, monthly 0, daily 12.
Records on 11 May 1909 by timescale
TimescaleRecords
all-time0
monthly0
daily12

How Much Records Were Beaten By

10 broken records
Histogram of margins by which records were beaten on 11 May 1909 Margins by which the 10 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 25.7. Ties are not counted. 02460 to 5: 65 to 10: 210 to 15: 115 to 20: 020 to 25: 025 to 30: 10 to 55 to 1010 to 1515 to 2020 to 2525 to 30
Margins by which the 10 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 25.7. Ties are not counted.
Histogram of margins by which records were beaten on 11 May 1909
MarginRecords
0 to 56
5 to 102
10 to 151
15 to 200
20 to 250
25 to 301

Top 20 by Significance

11 May 1909
Top 12 records on 11 May 1909 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
11 May 1909Durban-Botanical Gardens, ZAdaily rain27.7 mm (1.1 in)25.7 mm (1.0 in)28 years33 of 100 (Routine)
11 May 1909Chatham, CAdaily high min13.9 C (57.0 F)3.9 C (7.0 F)28 years21 of 100 (Routine)
11 May 1909Pointe Au Pere, CAdaily rain33.5 mm (1.3 in)10.1 mm (0.4 in)4 years19 of 100 (Routine)
11 May 1909Port Dover, CAdaily rain19.3 mm (0.8 in)5.6 mm (0.22 in)9 years13 of 100 (Routine)
11 May 1909Portland Rfc City, USdaily low max12.8 C (55.0 F)0.5 C (0.9 F)29 years11 of 100 (Routine)
11 May 1909Saint John, CAdaily rain18.8 mm (0.7 in)5.6 mm (0.22 in)8 years10 of 100 (Routine)
11 May 1909Halifax, CAdaily high min7.2 C (45.0 F)0.5 C (0.9 F)18 years9 of 100 (Routine)
11 May 1909Little Rock St Capitol, USdaily low min8.9 C (48.0 F)0.5 C (0.9 F)16 years9 of 100 (Routine)
11 May 1909Kei Road (Pol), ZAdaily rain3.0 mm (0.12 in)2.0 mm (0.08 in)14 years8 of 100 (Routine)
11 May 1909Chattanooga Wb City, USdaily low max20.0 C (68.0 F)1.1 C (2.0 F)2 years5 of 100 (Routine)
11 May 1909Winnemucca AP, USdaily low min (Tie)-6.7 C (19.9 F)tie21 years2 of 100 (Routine)
11 May 1909Charlottetown, CAdaily high min (Tie)10.0 C (50.0 F)tie13 years1 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

1814 to 1909
Records on 05-11 in each year Records set or tied on this calendar date in each year from 1814 to 1909. 1909 had 12 records. 05001,0001,5001814: 31832: 11836: 31837: 11838: 11848: 21856: 11860: 21865: 11867: 11869: 11872: 11874: 21879: 21880: 11881: 51883: 31884: 21885: 11886: 21887: 11888: 11889: 21892: 11893: 31894: 21895: 41896: 31897: 61898: 51900: 71901: 91902: 61903: 71904: 61905: 121906: 211907: 441908: 91909: 121910: 161911: 991912: 211913: 201914: 201915: 161916: 221917: 401918: 541919: 561920: 1811921: 581922: 611923: 1111924: 2391925: 4101926: 4721927: 3181928: 2521929: 1261930: 3801931: 2541932: 1701933: 4291934: 3321935: 2761936: 3631937: 1701938: 1411939: 2131940: 3401941: 4111942: 3891943: 6461944: 4081945: 4831946: 7471947: 4801948: 4071949: 4511950: 2851951: 3951952: 6291953: 6861954: 4921955: 2351956: 9421957: 4391958: 4991959: 5751960: 8091961: 6631962: 6701963: 9841964: 2991965: 3561966: 9921967: 9741968: 9091969: 3491970: 7641971: 5651972: 6731973: 4291974: 7951975: 3831976: 5091977: 8361978: 1,0701979: 1,2391980: 6931981: 1,2981982: 6241983: 9301984: 6661985: 8351986: 6841987: 1,2471988: 4851989: 9521990: 9351991: 9901992: 7281993: 1,0881994: 6331995: 1,2441996: 1,0881997: 1,0331998: 1,3151999: 1,0522000: 1,2862001: 8482002: 8452003: 1,3212004: 8342005: 9442006: 8222007: 8332008: 1,0152009: 6052010: 1,2922011: 1,4142012: 1,1812013: 6152014: 6622015: 1,0382016: 4972017: 5462018: 9882019: 9152020: 1,0682021: 5902022: 1,4702023: 3902024: 5792025: 1,1042026: 7971814188319021918193419501966198219982014
Records set or tied on this calendar date in each year from 1814 to 1909. 1909 had 12 records.
Counts for years before the ledger starts come from the same station rules.
Records on 05-11 in each year
YearRecords
18143
18321
18363
18371
18381
18482
18561
18602
18651
18671
18691
18721
18742
18792
18801
18815
18833
18842
18851
18862
18871
18881
18892
18921
18933
18942
18954
18963
18976
18985
19007
19019
19026
19037
19046
190512
190621
190744
19089
190912
191016
191199
191221
191320
191420
191516
191622
191740
191854
191956
1920181
192158
192261
1923111
1924239
1925410
1926472
1927318
1928252
1929126
1930380
1931254
1932170
1933429
1934332
1935276
1936363
1937170
1938141
1939213
1940340
1941411
1942389
1943646
1944408
1945483
1946747
1947480
1948407
1949451
1950285
1951395
1952629
1953686
1954492
1955235
1956942
1957439
1958499
1959575
1960809
1961663
1962670
1963984
1964299
1965356
1966992
1967974
1968909
1969349
1970764
1971565
1972673
1973429
1974795
1975383
1976509
1977836
19781,070
19791,239
1980693
19811,298
1982624
1983930
1984666
1985835
1986684
19871,247
1988485
1989952
1990935
1991990
1992728
19931,088
1994633
19951,244
19961,088
19971,033
19981,315
19991,052
20001,286
2001848
2002845
20031,321
2004834
2005944
2006822
2007833
20081,015
2009605
20101,292
20111,414
20121,181
2013615
2014662
20151,038
2016497
2017546
2018988
2019915
20201,068
2021590
20221,470
2023390
2024579
20251,104
2026797

Download the Data

  • Data for records on 1909-05-11: 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).