St Guy Threshold Days by Year (CA007057304)
13 fixed thresholds counted per year at St Guy (CA007057304): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for St Guy Thresholds
- St Guy: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1981 with 50.
- St Guy: days with 10 cm (3.9 in) or more of snowfall in 21 years, most in 1969 with 18.
- St Guy: days with a maximum temperature at or below 0 C (32 F) in 20 years, most in 1978 with 134.
- St Guy: nights with a minimum temperature at or below 0 C (32 F) in 20 years, most in 1972 with 218.
- 13 fixed thresholds have at least one qualifying day at St Guy.
Days at or above 30 C (86 F)
13 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1967 | 1 | 1.7 |
| 1968 | 2 | 1.7 |
| 1969 | 2 | 1.7 |
| 1970 | 9 | 3.5 |
| 1973 | 2 | 3.5 |
| 1974 | 1 | 3.5 |
| 1975 | 3 | 3.5 |
| 1976 | 6 | 3.5 |
| 1977 | 3 | 3.5 |
| 1978 | 3 | 3.5 |
| 1979 | 1 | 3.5 |
| 1982 | 1 | 2.5 |
| 1983 | 4 | 2.5 |
| Year | First date | Last date |
|---|---|---|
| 1967 | 1967-06-04 | 1967-06-04 |
| 1968 | 1968-07-15 | 1968-07-19 |
| 1969 | 1969-06-13 | 1969-06-27 |
| 1970 | 1970-07-25 | 1970-08-16 |
| 1973 | 1973-07-24 | 1973-07-25 |
| 1974 | 1974-07-14 | 1974-07-14 |
| 1975 | 1975-08-01 | 1975-08-09 |
| 1976 | 1976-06-06 | 1976-08-21 |
| 1977 | 1977-05-23 | 1977-08-29 |
| 1978 | 1978-05-27 | 1978-08-16 |
| 1979 | 1979-07-25 | 1979-07-25 |
| 1982 | 1982-07-18 | 1982-07-18 |
| 1983 | 1983-06-21 | 1983-07-04 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 13 | 9 | 1970 | 4 |
| 90 F (32.2 C): Days | 3 | 2 | 1975 | 1 |
| 0 C (32 F): Ice days (max | 20 | 134 | 1978 | 112 |
| 0 C (32 F): Frost days (min | 20 | 218 | 1972 | 184 |
| -10 C (14 F): Days with min | 20 | 125 | 1972 | 94 |
| -20 C (-4 F): Days with min | 20 | 63 | 1982 | 36 |
| -30 C (-22 F): Days with min | 18 | 8 | 1982 | 8 |
| 20 C (68 F): Tropical nights (min | 8 | 3 | 1963 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 21 | 50 | 1981 | 50 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 20 | 13 | 1981 | 11 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 8 | 3 | 1981 | 3 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 21 | 18 | 1969 | 18 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 16 | 6 | 1969 | 4 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.
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).