Lake Cowichan Threshold Days by Year (CA001012055)
14 fixed thresholds counted per year at Lake Cowichan (CA001012055): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Lake Cowichan Thresholds
- Lake Cowichan: nights with a minimum temperature at or below 0 C (32 F) in 19 years, most in 1972 with 112.
- Lake Cowichan: days with 10 mm (0.39 in) or more of precipitation in 19 years, most in 1961 with 88.
- Lake Cowichan: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1961 with 33.
- Lake Cowichan: days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1961 with 10.
- 14 fixed thresholds have at least one qualifying day at Lake Cowichan.
Days at or above 30 C (86 F)
16 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1961 | 16 | 9.3 |
| 1962 | 6 | 9.3 |
| 1963 | 4 | 9.3 |
| 1965 | 10 | 9.3 |
| 1966 | 1 | 9.3 |
| 1967 | 19 | 9.3 |
| 1968 | 12 | 9.3 |
| 1969 | 6 | 9.3 |
| 1970 | 8 | 10 |
| 1971 | 14 | 10 |
| 1972 | 12 | 10 |
| 1973 | 10 | 10 |
| 1974 | 10 | 10 |
| 1975 | 5 | 10 |
| 1978 | 11 | 10 |
| 1983 | 3 | 3 |
| Year | First date | Last date |
|---|---|---|
| 1961 | 1961-06-01 | 1961-08-22 |
| 1962 | 1962-07-22 | 1962-07-30 |
| 1963 | 1963-06-15 | 1963-09-09 |
| 1965 | 1965-07-03 | 1965-08-18 |
| 1966 | 1966-08-23 | 1966-08-23 |
| 1967 | 1967-06-18 | 1967-09-16 |
| 1968 | 1968-07-02 | 1968-08-10 |
| 1969 | 1969-06-09 | 1969-09-10 |
| 1970 | 1970-06-01 | 1970-08-23 |
| 1971 | 1971-07-17 | 1971-08-11 |
| 1972 | 1972-07-04 | 1972-09-03 |
| 1973 | 1973-05-14 | 1973-09-05 |
| 1974 | 1974-07-28 | 1974-09-24 |
| 1975 | 1975-07-04 | 1975-07-26 |
| 1978 | 1978-06-01 | 1978-08-09 |
| 1983 | 1983-05-28 | 1983-08-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 16 | 19 | 1967 | 3 |
| 35 C (95 F): Days | 5 | 3 | 1965 | 1 |
| 90 F (32.2 C): Days | 13 | 9 | 1971 | 2 |
| 0 C (32 F): Ice days (max | 18 | 15 | 1972 | 7 |
| 0 C (32 F): Frost days (min | 19 | 112 | 1972 | 57 |
| -10 C (14 F): Days with min | 11 | 9 | 1972 | 4 |
| 20 C (68 F): Tropical nights (min | 1 | 1 | 1983 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 19 | 88 | 1961 | 78 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 19 | 33 | 1961 | 27 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 19 | 10 | 1961 | 6 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 7 | 2 | 1963 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 18 | 11 | 1971 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 7 | 2 | 1975 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1975 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.
Download the Data
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).