Mont Louis Threshold Days by Year (CA007055200)
16 fixed thresholds counted per year at Mont Louis (CA007055200): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mont Louis Thresholds
- Mont Louis: nights with a minimum temperature at or below 0 C (32 F) in 38 years, most in 1972 with 205.
- Mont Louis: nights with a minimum temperature at or below -10 C (14 F) in 38 years, most in 1972 with 114.
- Mont Louis: nights with a minimum temperature at or below -20 C (-4 F) in 38 years, most in 1948 with 39.
- Mont Louis: days with 10 cm (3.9 in) or more of snowfall in 37 years, most in 1941 with 21.
- 16 fixed thresholds have at least one qualifying day at Mont Louis.
Days at or above 30 C (86 F)
26 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1941 | 3 | 3.7 |
| 1942 | 1 | 3.7 |
| 1943 | 1 | 3.7 |
| 1944 | 9 | 3.7 |
| 1945 | 6 | 3.7 |
| 1946 | 2 | 3.7 |
| 1952 | 8 | 6.5 |
| 1953 | 3 | 6.5 |
| 1955 | 5 | 6.5 |
| 1959 | 10 | 6.5 |
| 1960 | 4 | 3 |
| 1963 | 4 | 3 |
| 1967 | 3 | 3 |
| 1968 | 1 | 3 |
| 1970 | 2 | 3.1 |
| 1971 | 3 | 3.1 |
| 1972 | 2 | 3.1 |
| 1975 | 5 | 3.1 |
| 1976 | 4 | 3.1 |
| 1977 | 3 | 3.1 |
| 1978 | 1 | 3.1 |
| 1979 | 5 | 3.1 |
| 1980 | 1 | 4 |
| 1981 | 6 | 4 |
| 1982 | 1 | 4 |
| 1983 | 8 | 4 |
| Year | First date | Last date |
|---|---|---|
| 1941 | 1941-07-06 | 1941-07-24 |
| 1942 | 1942-06-30 | 1942-06-30 |
| 1943 | 1943-07-13 | 1943-07-13 |
| 1944 | 1944-06-06 | 1944-08-17 |
| 1945 | 1945-07-18 | 1945-09-07 |
| 1946 | 1946-08-03 | 1946-09-21 |
| 1952 | 1952-07-02 | 1952-08-28 |
| 1953 | 1953-07-15 | 1953-08-12 |
| 1955 | 1955-06-30 | 1955-08-15 |
| 1959 | 1959-07-05 | 1959-09-08 |
| 1960 | 1960-06-17 | 1960-08-19 |
| 1963 | 1963-07-13 | 1963-07-29 |
| 1967 | 1967-06-05 | 1967-07-23 |
| 1968 | 1968-07-19 | 1968-07-19 |
| 1970 | 1970-06-09 | 1970-07-31 |
| 1971 | 1971-06-18 | 1971-08-11 |
| 1972 | 1972-06-15 | 1972-07-13 |
| 1975 | 1975-06-27 | 1975-07-20 |
| 1976 | 1976-06-06 | 1976-08-22 |
| 1977 | 1977-07-17 | 1977-08-29 |
| 1978 | 1978-08-16 | 1978-08-16 |
| 1979 | 1979-06-16 | 1979-07-31 |
| 1980 | 1980-05-21 | 1980-05-21 |
| 1981 | 1981-06-05 | 1981-08-01 |
| 1982 | 1982-07-08 | 1982-07-08 |
| 1983 | 1983-06-21 | 1983-09-21 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 26 | 10 | 1959 | 8 |
| 35 C (95 F): Days | 2 | 1 | 1942 | 1 |
| 90 F (32.2 C): Days | 15 | 3 | 1952 | 3 |
| 0 C (32 F): Ice days (max | 36 | 123 | 1943 | 93 |
| 0 C (32 F): Frost days (min | 38 | 205 | 1972 | 193 |
| -10 C (14 F): Days with min | 38 | 114 | 1972 | 75 |
| -20 C (-4 F): Days with min | 38 | 39 | 1948 | 15 |
| -30 C (-22 F): Days with min | 4 | 4 | 1957 | 1 |
| 20 C (68 F): Tropical nights (min | 15 | 6 | 1948 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 33 | 50 | 1941 | 34 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 32 | 14 | 1981 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 12 | 5 | 1981 | 5 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 1955 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 37 | 21 | 1941 | 14 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 26 | 4 | 1980 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 3 | 1 | 1966 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.
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).