St John's Threshold Days by Year (CA008403500)
14 fixed thresholds counted per year at St John's (CA008403500): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for St John's Thresholds
- St John's: days with a maximum temperature at or below 0 C (32 F) in 64 years, most in 1875 with 97.
- St John's: nights with a minimum temperature at or below 0 C (32 F) in 63 years, most in 1875 with 205.
- St John's: nights with a minimum temperature at or below -10 C (14 F) in 63 years, most in 1875 with 87.
- St John's: days with 10 cm (3.9 in) or more of snowfall in 63 years, most in 1882 with 23.
- 14 fixed thresholds have at least one qualifying day at St John's.
Days at or above 30 C (86 F)
18 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1876 | 3 | 2.5 |
| 1877 | 2 | 2.5 |
| 1880 | 1 | 1.3 |
| 1883 | 2 | 1.3 |
| 1887 | 1 | 1.3 |
| 1895 | 2 | 2 |
| 1908 | 1 | 1.5 |
| 1909 | 2 | 1.5 |
| 1912 | 1 | 1 |
| 1915 | 1 | 1 |
| 1920 | 2 | 1.5 |
| 1921 | 1 | 1.5 |
| 1932 | 1 | 1.3 |
| 1935 | 1 | 1.3 |
| 1937 | 2 | 1.3 |
| 1949 | 1 | 1 |
| 1952 | 2 | 1.5 |
| 1953 | 1 | 1.5 |
| Year | First date | Last date |
|---|---|---|
| 1876 | 1876-08-10 | 1876-08-15 |
| 1877 | 1877-07-20 | 1877-08-24 |
| 1880 | 1880-08-02 | 1880-08-02 |
| 1883 | 1883-07-19 | 1883-07-20 |
| 1887 | 1887-07-02 | 1887-07-02 |
| 1895 | 1895-07-09 | 1895-07-10 |
| 1908 | 1908-08-10 | 1908-08-10 |
| 1909 | 1909-08-05 | 1909-08-06 |
| 1912 | 1912-07-11 | 1912-07-11 |
| 1915 | 1915-06-08 | 1915-06-08 |
| 1920 | 1920-07-15 | 1920-08-10 |
| 1921 | 1921-07-26 | 1921-07-26 |
| 1932 | 1932-10-03 | 1932-10-03 |
| 1935 | 1935-08-20 | 1935-08-20 |
| 1937 | 1937-08-08 | 1937-08-09 |
| 1949 | 1949-06-19 | 1949-06-19 |
| 1952 | 1952-07-24 | 1952-08-29 |
| 1953 | 1953-07-13 | 1953-07-13 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 18 | 3 | 1876 | 1 |
| 90 F (32.2 C): Days | 2 | 1 | 1876 | 1 |
| 0 C (32 F): Ice days (max | 64 | 97 | 1875 | 51 |
| 0 C (32 F): Frost days (min | 63 | 205 | 1875 | 147 |
| -10 C (14 F): Days with min | 63 | 87 | 1875 | 23 |
| -20 C (-4 F): Days with min | 37 | 10 | 1882 | 1 |
| 20 C (68 F): Tropical nights (min | 7 | 3 | 1952 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 62 | 71 | 1893 | 48 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 62 | 22 | 1897 | 12 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 37 | 5 | 1876 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 1 | 1876 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 63 | 23 | 1882 | 8 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 41 | 8 | 1897 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 7 | 2 | 1894 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1876.
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 (2025-12-31).