St Guillaume Threshold Days by Year (CA007027302)
14 fixed thresholds counted per year at St Guillaume (CA007027302): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for St Guillaume Thresholds
- St Guillaume: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1972 with 43.
- St Guillaume: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1983 with 9.
- St Guillaume: days with 10 cm (3.9 in) or more of snowfall in 16 years, most in 1983 with 10.
- St Guillaume: days with a maximum temperature at or above 30 C (86 F) in 15 years, most in 1970 with 24.
- 14 fixed thresholds have at least one qualifying day at St Guillaume.
Days at or above 30 C (86 F)
15 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1968 | 7 | 7.5 |
| 1969 | 8 | 7.5 |
| 1970 | 24 | 12.6 |
| 1971 | 13 | 12.6 |
| 1972 | 8 | 12.6 |
| 1973 | 15 | 12.6 |
| 1974 | 3 | 12.6 |
| 1975 | 16 | 12.6 |
| 1976 | 8 | 12.6 |
| 1977 | 11 | 12.6 |
| 1978 | 13 | 12.6 |
| 1979 | 15 | 12.6 |
| 1980 | 4 | 9.7 |
| 1981 | 3 | 9.7 |
| 1983 | 22 | 9.7 |
| Year | First date | Last date |
|---|---|---|
| 1968 | 1968-07-09 | 1968-07-19 |
| 1969 | 1969-06-02 | 1969-08-31 |
| 1970 | 1970-06-02 | 1970-08-16 |
| 1971 | 1971-05-19 | 1971-08-19 |
| 1972 | 1972-05-23 | 1972-07-21 |
| 1973 | 1973-06-27 | 1973-09-05 |
| 1974 | 1974-07-14 | 1974-08-22 |
| 1975 | 1975-05-20 | 1975-08-03 |
| 1976 | 1976-06-05 | 1976-08-21 |
| 1977 | 1977-05-17 | 1977-08-29 |
| 1978 | 1978-05-27 | 1978-08-16 |
| 1979 | 1979-05-09 | 1979-08-02 |
| 1980 | 1980-06-24 | 1980-07-14 |
| 1981 | 1981-06-16 | 1981-07-09 |
| 1983 | 1983-06-13 | 1983-09-20 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 15 | 24 | 1970 | 22 |
| 35 C (95 F): Days | 2 | 1 | 1975 | 1 |
| 90 F (32.2 C): Days | 10 | 8 | 1970 | 3 |
| 0 C (32 F): Ice days (max | 15 | 105 | 1971 | 70 |
| 0 C (32 F): Frost days (min | 15 | 193 | 1978 | 180 |
| -10 C (14 F): Days with min | 15 | 101 | 1976 | 68 |
| -20 C (-4 F): Days with min | 15 | 45 | 1968 | 21 |
| -30 C (-22 F): Days with min | 15 | 12 | 1979 | 3 |
| 20 C (68 F): Tropical nights (min | 14 | 13 | 1973 | 8 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 16 | 43 | 1972 | 41 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 16 | 9 | 1983 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 5 | 3 | 1981 | 3 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 16 | 10 | 1983 | 10 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 1 | 1970 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.
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).