Granite Reef Dam Threshold Days by Year
15 fixed thresholds counted per year at Granite Reef Dam (USC00023621): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Granite Reef Dam Thresholds
- Granite Reef Dam: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1941 with 16.
- Granite Reef Dam: days with a maximum temperature at or above 30 C (86 F) in 50 years, most in 1931 with 208.
- Granite Reef Dam: days with a maximum temperature at or above 35 C (95 F) in 50 years, most in 1937 with 152.
- Granite Reef Dam: days with a maximum temperature at or above 40 C (104 F) in 50 years, most in 1905 with 80.
- 15 fixed thresholds have at least one qualifying day at Granite Reef Dam.
Days at or above 30 C (86 F)
50 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1893 | 185 | 185 |
| 1900 | 174 | 179.4 |
| 1901 | 178 | 179.4 |
| 1902 | 185 | 179.4 |
| 1903 | 179 | 179.4 |
| 1905 | 170 | 179.4 |
| 1906 | 202 | 179.4 |
| 1908 | 168 | 179.4 |
| 1910 | 197 | 177.1 |
| 1911 | 180 | 177.1 |
| 1912 | 160 | 177.1 |
| 1913 | 175 | 177.1 |
| 1914 | 178 | 177.1 |
| 1915 | 180 | 177.1 |
| 1916 | 183 | 177.1 |
| 1917 | 180 | 177.1 |
| 1918 | 165 | 177.1 |
| 1919 | 173 | 177.1 |
| 1920 | 160 | 177 |
| 1921 | 197 | 177 |
| 1922 | 171 | 177 |
| 1923 | 175 | 177 |
| 1925 | 178 | 177 |
| 1927 | 187 | 177 |
| 1928 | 171 | 177 |
| 1931 | 208 | 194 |
| 1937 | 194 | 194 |
| 1938 | 175 | 194 |
| 1939 | 199 | 194 |
| 1940 | 195 | 183.7 |
| 1941 | 166 | 183.7 |
| 1943 | 202 | 183.7 |
| 1944 | 184 | 183.7 |
| 1945 | 192 | 183.7 |
| 1946 | 189 | 183.7 |
| 1947 | 193 | 183.7 |
| 1948 | 163 | 183.7 |
| 1949 | 169 | 183.7 |
| 1950 | 182 | 172.7 |
| 1951 | 151 | 172.7 |
| 1952 | 185 | 172.7 |
| 1966 | 191 | 187.5 |
| 1969 | 184 | 187.5 |
| 1970 | 159 | 180.9 |
| 1971 | 170 | 180.9 |
| 1972 | 200 | 180.9 |
| 1973 | 185 | 180.9 |
| 1974 | 191 | 180.9 |
| 1975 | 175 | 180.9 |
| 1977 | 186 | 180.9 |
| Year | First date | Last date |
|---|---|---|
| 1893 | 1893-03-26 | 1893-11-10 |
| 1900 | 1900-03-09 | 1900-11-06 |
| 1901 | 1901-03-01 | 1901-10-26 |
| 1902 | 1902-04-06 | 1902-11-10 |
| 1903 | 1903-04-07 | 1903-11-22 |
| 1905 | 1905-04-05 | 1905-11-03 |
| 1906 | 1906-02-26 | 1906-11-14 |
| 1908 | 1908-03-15 | 1908-11-06 |
| 1910 | 1910-03-01 | 1910-11-02 |
| 1911 | 1911-03-29 | 1911-10-19 |
| 1912 | 1912-04-23 | 1912-11-09 |
| 1913 | 1913-03-31 | 1913-11-07 |
| 1914 | 1914-03-09 | 1914-11-04 |
| 1915 | 1915-04-02 | 1915-11-22 |
| 1916 | 1916-03-09 | 1916-11-03 |
| 1917 | 1917-03-28 | 1917-11-24 |
| 1918 | 1918-03-31 | 1918-11-12 |
| 1919 | 1919-03-30 | 1919-10-21 |
| 1920 | 1920-04-06 | 1920-10-09 |
| 1921 | 1921-02-13 | 1921-11-11 |
| 1922 | 1922-04-19 | 1922-10-26 |
| 1923 | 1923-04-06 | 1923-10-22 |
| 1925 | 1925-03-04 | 1925-10-07 |
| 1927 | 1927-01-05 | 1927-11-19 |
| 1928 | 1928-03-18 | 1928-09-30 |
| 1931 | 1931-03-21 | 1931-12-21 |
| 1937 | 1937-03-10 | 1937-10-29 |
| 1938 | 1938-04-04 | 1938-10-15 |
| 1939 | 1939-03-14 | 1939-11-07 |
| 1940 | 1940-03-21 | 1940-11-02 |
| 1941 | 1941-04-24 | 1941-11-06 |
| 1943 | 1943-02-19 | 1943-11-19 |
| 1944 | 1944-04-02 | 1944-11-04 |
| 1945 | 1945-04-06 | 1945-11-04 |
| 1946 | 1946-03-02 | 1946-10-26 |
| 1947 | 1947-03-15 | 1947-11-01 |
| 1948 | 1948-01-08 | 1948-10-28 |
| 1949 | 1949-03-17 | 1949-11-26 |
| 1950 | 1950-03-22 | 1950-11-29 |
| 1951 | 1951-02-11 | 1951-10-30 |
| 1952 | 1952-04-02 | 1952-11-01 |
| 1966 | 1966-03-17 | 1966-11-06 |
| 1969 | 1969-03-28 | 1969-11-02 |
| 1970 | 1970-04-06 | 1970-10-19 |
| 1971 | 1971-01-19 | 1971-10-15 |
| 1972 | 1972-02-27 | 1972-10-16 |
| 1973 | 1973-04-11 | 1973-11-12 |
| 1974 | 1974-03-16 | 1974-10-25 |
| 1975 | 1975-04-21 | 1975-11-09 |
| 1977 | 1977-02-21 | 1977-11-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 50 | 208 | 1931 | 186 |
| 35 C (95 F): Days | 50 | 152 | 1937 | 133 |
| 40 C (104 F): Days | 50 | 80 | 1905 | 67 |
| 45 C (113 F): Days | 33 | 9 | 1940 | 1 |
| 90 F (32.2 C): Days | 50 | 191 | 1931 | 164 |
| 100 F (37.8 C): Days | 50 | 115 | 1937 | 95 |
| 110 F (43.3 C): Days | 50 | 29 | 1944 | 8 |
| 120 F (48.9 C): Days | 1 | 1 | 1925 | 1 |
| 0 C (32 F): Frost days (min | 48 | 35 | 1931 | 9 |
| -10 C (14 F): Days with min | 1 | 1 | 1913 | 1 |
| 20 C (68 F): Tropical nights (min | 48 | 108 | 1914 | 99 |
| 25 C (77 F): Days with min | 48 | 62 | 1925 | 32 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 68 | 16 | 1941 | 4 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 5 | 1908 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 9 | 3 | 1943 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.
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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).