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Built 2026-10-19 (19 October 2026)

Cowichan Lake Forestry Threshold Days by Year (CA001012040)

14 fixed thresholds counted per year at Cowichan Lake Forestry (CA001012040): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cowichan Lake Forestry Thresholds

  • Cowichan Lake Forestry: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1951 with 137.
  • Cowichan Lake Forestry: days with 10 mm (0.39 in) or more of precipitation in 34 years, most in 1983 with 87.
  • Cowichan Lake Forestry: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 1983 with 43.
  • Cowichan Lake Forestry: days with 50 mm (1.97 in) or more of precipitation in 34 years, most in 1954 with 12.
  • 14 fixed thresholds have at least one qualifying day at Cowichan Lake Forestry.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Cowichan Lake Forestry Days per year at Cowichan Lake Forestry with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 33 in 1958. 0102030401950: 91951: 161952: 191953: 21955: 51956: 71958: 331959: 91960: 141961: 231962: 91963: 71965: 141966: 61967: 291968: 151969: 141970: 161971: 201972: 251973: 171974: 151975: 91977: 201978: 161979: 51980: 41981: 161982: 141983: 41950195319581961196519681971197419781981
Days per year at Cowichan Lake Forestry with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 33 in 1958.
Days at or above 30 C (86 F) per year at Cowichan Lake Forestry
YearDaysDecade average
1950912.5
19511612.5
19521912.5
1953212.5
1955512.5
1956712.5
19583312.5
1959912.5
19601414.6
19612314.6
1962914.6
1963714.6
19651414.6
1966614.6
19672914.6
19681514.6
19691414.6
19701615.9
19712015.9
19722515.9
19731715.9
19741515.9
1975915.9
19772015.9
19781615.9
1979515.9
198049.5
1981169.5
1982149.5
198349.5
First to last qualifying date each year at Cowichan Lake Forestry For each year, a bar from the first to the last day at Cowichan Lake Forestry meeting 30 C (86 F). 1950: 16 June 1950 to 21 August 19501951: 28 June 1951 to 15 September 19511952: 7 July 1952 to 12 August 19521953: 7 July 1953 to 14 August 19531955: 9 June 1955 to 6 September 19551956: 18 May 1956 to 22 August 19561958: 18 May 1958 to 24 August 19581959: 16 July 1959 to 31 July 19591960: 5 July 1960 to 9 August 19601961: 1 June 1961 to 22 August 19611962: 22 July 1962 to 30 July 19621963: 20 May 1963 to 9 September 19631965: 30 June 1965 to 18 August 19651966: 2 August 1966 to 10 September 19661967: 18 June 1967 to 16 September 19671968: 2 July 1968 to 10 August 19681969: 4 June 1969 to 10 September 19691970: 1 June 1970 to 23 August 19701971: 15 July 1971 to 12 August 19711972: 28 May 1972 to 12 September 19721973: 14 May 1973 to 10 September 19731974: 27 July 1974 to 24 September 19741975: 3 July 1975 to 14 August 19751977: 17 June 1977 to 20 August 19771978: 2 June 1978 to 9 August 19781979: 15 July 1979 to 19 July 19791980: 21 July 1980 to 11 August 19801981: 16 July 1981 to 7 September 19811982: 17 June 1982 to 25 August 19821983: 28 May 1983 to 7 August 198319501955196019651969197319781982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cowichan Lake Forestry meeting 30 C (86 F).
First to last qualifying date each year at Cowichan Lake Forestry
YearFirst dateLast date
19501950-06-161950-08-21
19511951-06-281951-09-15
19521952-07-071952-08-12
19531953-07-071953-08-14
19551955-06-091955-09-06
19561956-05-181956-08-22
19581958-05-181958-08-24
19591959-07-161959-07-31
19601960-07-051960-08-09
19611961-06-011961-08-22
19621962-07-221962-07-30
19631963-05-201963-09-09
19651965-06-301965-08-18
19661966-08-021966-09-10
19671967-06-181967-09-16
19681968-07-021968-08-10
19691969-06-041969-09-10
19701970-06-011970-08-23
19711971-07-151971-08-12
19721972-05-281972-09-12
19731973-05-141973-09-10
19741974-07-271974-09-24
19751975-07-031975-08-14
19771977-06-171977-08-20
19781978-06-021978-08-09
19791979-07-151979-07-19
19801980-07-211980-08-11
19811981-07-161981-09-07
19821982-06-171982-08-25
19831983-05-281983-08-07

Every Fixed Threshold

Fixed thresholds at Cowichan Lake Forestry
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days303319584
35 C (95 F): Days13519715
90 F (32.2 C): Days281719672
100 F (37.8 C): Days2119651
0 C (32 F): Ice days (max322719506
0 C (32 F): Frost days (min34137195145
-10 C (14 F): Days with min202119503
10 mm (0.39 in): Days with 10 mm or more rain3487198387
25 mm (0.98 in): Days with 25 mm or more rain3443198343
50 mm (1.97 in): Days with 50 mm or more rain3412195410
100 mm (3.94 in): Days with 100 mm or more rain10219632
10 cm (3.9 in): Days with 10 cm or more snowfall331819711
25 cm (9.8 in): Days with 25 cm or more snowfall18519541
50 cm (19.7 in): Days with 50 cm or more snowfall1119641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

  • Data for Cowichan Lake Forestry 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).