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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Lake Louise Threshold Days by Year (CA003053760)

14 fixed thresholds counted per year at Lake Louise (CA003053760): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lake Louise Thresholds

  • Lake Louise: days with a maximum temperature at or below 0 C (32 F) in 64 years, most in 1955 with 133.
  • Lake Louise: nights with a minimum temperature at or below 0 C (32 F) in 64 years, most in 1920 with 301.
  • Lake Louise: nights with a minimum temperature at or below -10 C (14 F) in 64 years, most in 1970 with 161.
  • Lake Louise: nights with a minimum temperature at or below -20 C (-4 F) in 64 years, most in 1978 with 84.
  • 14 fixed thresholds have at least one qualifying day at Lake Louise.
32 years with a qualifying day
Days at or above 30 C (86 F) per year at Lake Louise Days per year at Lake Louise with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 9 in 1940. 0358101919: 51920: 11924: 21926: 41927: 21928: 21929: 31930: 21931: 11932: 11933: 41934: 21935: 11936: 71937: 11938: 21940: 91941: 51944: 11945: 11946: 11955: 11956: 11959: 11960: 21961: 21965: 11967: 11968: 11971: 21973: 11979: 319191927193119351940194619601968
Days per year at Lake Louise with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 9 in 1940.
Days at or above 30 C (86 F) per year at Lake Louise
YearDaysDecade average
191955
192012.3
192422.3
192642.3
192722.3
192822.3
192932.3
193022.3
193112.3
193212.3
193342.3
193422.3
193512.3
193672.3
193712.3
193822.3
194093.4
194153.4
194413.4
194513.4
194613.4
195511
195611
195911
196021.4
196121.4
196511.4
196711.4
196811.4
197122
197312
197932
First to last qualifying date each year at Lake Louise For each year, a bar from the first to the last day at Lake Louise meeting 30 C (86 F). 1919: 19 June 1919 to 16 July 19191920: 6 August 1920 to 6 August 19201924: 1 July 1924 to 2 July 19241926: 5 July 1926 to 12 July 19261927: 23 July 1927 to 24 July 19271928: 24 July 1928 to 26 July 19281929: 18 July 1929 to 28 August 19291930: 13 July 1930 to 8 August 19301931: 20 July 1931 to 20 July 19311932: 17 August 1932 to 17 August 19321933: 24 July 1933 to 17 August 19331934: 28 July 1934 to 29 July 19341935: 14 July 1935 to 14 July 19351936: 29 May 1936 to 22 July 19361937: 29 June 1937 to 29 June 19371938: 21 July 1938 to 22 July 19381940: 19 June 1940 to 20 August 19401941: 23 June 1941 to 18 July 19411944: 19 July 1944 to 19 July 19441945: 7 August 1945 to 7 August 19451946: 20 July 1946 to 20 July 19461955: 17 July 1955 to 17 July 19551956: 20 July 1956 to 20 July 19561959: 23 July 1959 to 23 July 19591960: 18 July 1960 to 19 July 19601961: 14 July 1961 to 4 August 19611965: 27 July 1965 to 27 July 19651967: 18 August 1967 to 18 August 19671968: 4 July 1968 to 4 July 19681971: 1 August 1971 to 2 August 19711973: 1 August 1973 to 1 August 19731979: 18 July 1979 to 20 July 197919191927193119351940194619601968JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lake Louise meeting 30 C (86 F).
First to last qualifying date each year at Lake Louise
YearFirst dateLast date
19191919-06-191919-07-16
19201920-08-061920-08-06
19241924-07-011924-07-02
19261926-07-051926-07-12
19271927-07-231927-07-24
19281928-07-241928-07-26
19291929-07-181929-08-28
19301930-07-131930-08-08
19311931-07-201931-07-20
19321932-08-171932-08-17
19331933-07-241933-08-17
19341934-07-281934-07-29
19351935-07-141935-07-14
19361936-05-291936-07-22
19371937-06-291937-06-29
19381938-07-211938-07-22
19401940-06-191940-08-20
19411941-06-231941-07-18
19441944-07-191944-07-19
19451945-08-071945-08-07
19461946-07-201946-07-20
19551955-07-171955-07-17
19561956-07-201956-07-20
19591959-07-231959-07-23
19601960-07-181960-07-19
19611961-07-141961-08-04
19651965-07-271965-07-27
19671967-08-181967-08-18
19681968-07-041968-07-04
19711971-08-011971-08-02
19731973-08-011973-08-01
19791979-07-181979-07-20

Every Fixed Threshold

Fixed thresholds at Lake Louise
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days32919403
90 F (32.2 C): Days4219192
0 C (32 F): Ice days (max64133195588
0 C (32 F): Frost days (min643011920258
-10 C (14 F): Days with min641611970104
-20 C (-4 F): Days with min6484197848
-30 C (-22 F): Days with min6437192215
-40 C (-40 F): Days with min501519502
10 mm (0.39 in): Days with 10 mm or more rain6337194614
25 mm (0.98 in): Days with 25 mm or more rain53819511
50 mm (1.97 in): Days with 50 mm or more rain3119151
10 cm (3.9 in): Days with 10 cm or more snowfall642819535
25 cm (9.8 in): Days with 25 cm or more snowfall47819511
50 cm (19.7 in): Days with 50 cm or more snowfall1119551

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1919.

Download the Data

  • Data for Lake Louise threshold days by year: CSV or JSON. Field meanings are on the data page.

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)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).