Grand Manan Threshold Days by Year (CA008101920)
15 fixed thresholds counted per year at Grand Manan (CA008101920): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Grand Manan Thresholds
- Grand Manan: days with a maximum temperature at or below 0 C (32 F) in 30 years, most in 1904 with 75.
- Grand Manan: nights with a minimum temperature at or below 0 C (32 F) in 30 years, most in 1888 with 162.
- Grand Manan: nights with a minimum temperature at or below -10 C (14 F) in 30 years, most in 1885 with 61.
- Grand Manan: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1900 with 53.
- 15 fixed thresholds have at least one qualifying day at Grand Manan.
Days at or above 30 C (86 F)
14 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1884 | 1 | 1 |
| 1886 | 1 | 1 |
| 1887 | 1 | 1 |
| 1888 | 1 | 1 |
| 1893 | 1 | 1 |
| 1894 | 1 | 1 |
| 1897 | 1 | 1 |
| 1898 | 1 | 1 |
| 1900 | 3 | 2 |
| 1901 | 2 | 2 |
| 1906 | 2 | 2 |
| 1908 | 2 | 2 |
| 1909 | 1 | 2 |
| 1963 | 4 | 4 |
| Year | First date | Last date |
|---|---|---|
| 1884 | 1884-08-18 | 1884-08-18 |
| 1886 | 1886-07-07 | 1886-07-07 |
| 1887 | 1887-07-03 | 1887-07-03 |
| 1888 | 1888-06-23 | 1888-06-23 |
| 1893 | 1893-08-10 | 1893-08-10 |
| 1894 | 1894-07-29 | 1894-07-29 |
| 1897 | 1897-09-10 | 1897-09-10 |
| 1898 | 1898-07-04 | 1898-07-04 |
| 1900 | 1900-08-11 | 1900-09-04 |
| 1901 | 1901-07-22 | 1901-07-23 |
| 1906 | 1906-08-18 | 1906-08-19 |
| 1908 | 1908-07-06 | 1908-07-07 |
| 1909 | 1909-07-28 | 1909-07-28 |
| 1963 | 1963-06-25 | 1963-07-28 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 14 | 4 | 1963 | 4 |
| 90 F (32.2 C): Days | 2 | 3 | 1963 | 3 |
| 0 C (32 F): Ice days (max | 30 | 75 | 1904 | 46 |
| 0 C (32 F): Frost days (min | 30 | 162 | 1888 | 146 |
| -10 C (14 F): Days with min | 30 | 61 | 1885 | 32 |
| -20 C (-4 F): Days with min | 29 | 10 | 1886 | 1 |
| -30 C (-22 F): Days with min | 1 | 1 | 1890 | 1 |
| 20 C (68 F): Tropical nights (min | 8 | 3 | 1963 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 30 | 53 | 1900 | 48 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 30 | 21 | 1900 | 8 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 23 | 4 | 1884 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 3 | 1 | 1895 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 30 | 9 | 1894 | 8 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 13 | 3 | 1900 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 2 | 1 | 1898 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1884.
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).