Hannah 2 N Threshold Days by Year
18 fixed thresholds counted per year at Hannah 2 N (USC00323936): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Hannah 2 N Thresholds
- Hannah 2 N: nights with a minimum temperature at or below 0 C (32 F) in 52 years, most in 1915 with 215.
- Hannah 2 N: nights with a minimum temperature at or below -10 C (14 F) in 52 years, most in 1970 with 137.
- Hannah 2 N: nights with a minimum temperature at or below -20 C (-4 F) in 52 years, most in 1936 with 83.
- Hannah 2 N: nights with a minimum temperature at or below -30 C (-22 F) in 52 years, most in 1936 with 40.
- 18 fixed thresholds have at least one qualifying day at Hannah 2 N.
Days at or above 30 C (86 F)
51 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1911 | 9 | 17.5 |
| 1914 | 27 | 17.5 |
| 1915 | 16 | 17.5 |
| 1916 | 15 | 17.5 |
| 1918 | 10 | 17.5 |
| 1919 | 28 | 17.5 |
| 1920 | 26 | 26 |
| 1933 | 37 | 35.8 |
| 1934 | 46 | 35.8 |
| 1935 | 24 | 35.8 |
| 1936 | 56 | 35.8 |
| 1937 | 28 | 35.8 |
| 1938 | 24 | 35.8 |
| 1940 | 29 | 13.4 |
| 1941 | 28 | 13.4 |
| 1942 | 1 | 13.4 |
| 1943 | 2 | 13.4 |
| 1944 | 6 | 13.4 |
| 1945 | 13 | 13.4 |
| 1946 | 11 | 13.4 |
| 1947 | 17 | 13.4 |
| 1950 | 6 | 12.8 |
| 1951 | 8 | 12.8 |
| 1952 | 25 | 12.8 |
| 1953 | 17 | 12.8 |
| 1954 | 5 | 12.8 |
| 1956 | 5 | 12.8 |
| 1957 | 13 | 12.8 |
| 1958 | 11 | 12.8 |
| 1959 | 25 | 12.8 |
| 1960 | 30 | 18.1 |
| 1961 | 36 | 18.1 |
| 1962 | 7 | 18.1 |
| 1963 | 15 | 18.1 |
| 1964 | 13 | 18.1 |
| 1965 | 8 | 18.1 |
| 1966 | 21 | 18.1 |
| 1967 | 27 | 18.1 |
| 1968 | 4 | 18.1 |
| 1969 | 20 | 18.1 |
| 1970 | 23 | 16.9 |
| 1971 | 8 | 16.9 |
| 1972 | 22 | 16.9 |
| 1973 | 20 | 16.9 |
| 1974 | 8 | 16.9 |
| 1976 | 24 | 16.9 |
| 1977 | 15 | 16.9 |
| 1979 | 15 | 16.9 |
| 1980 | 29 | 32 |
| 1983 | 39 | 32 |
| 1984 | 28 | 32 |
| Year | First date | Last date |
|---|---|---|
| 1911 | 1911-05-17 | 1911-08-20 |
| 1914 | 1914-07-04 | 1914-09-30 |
| 1915 | 1915-08-05 | 1915-09-06 |
| 1916 | 1916-07-04 | 1916-08-23 |
| 1918 | 1918-05-04 | 1918-08-05 |
| 1919 | 1919-05-26 | 1919-08-21 |
| 1920 | 1920-06-07 | 1920-10-06 |
| 1933 | 1933-05-15 | 1933-09-18 |
| 1934 | 1934-05-05 | 1934-10-13 |
| 1935 | 1935-07-10 | 1935-09-16 |
| 1936 | 1936-05-25 | 1936-09-22 |
| 1937 | 1937-05-28 | 1937-09-20 |
| 1938 | 1938-06-18 | 1938-09-25 |
| 1940 | 1940-05-31 | 1940-09-17 |
| 1941 | 1941-05-18 | 1941-09-19 |
| 1942 | 1942-08-20 | 1942-08-20 |
| 1943 | 1943-07-08 | 1943-07-09 |
| 1944 | 1944-05-29 | 1944-07-30 |
| 1945 | 1945-06-21 | 1945-09-05 |
| 1946 | 1946-06-18 | 1946-09-14 |
| 1947 | 1947-07-03 | 1947-08-22 |
| 1950 | 1950-07-27 | 1950-09-06 |
| 1951 | 1951-05-23 | 1951-07-29 |
| 1952 | 1952-04-26 | 1952-09-27 |
| 1953 | 1953-05-07 | 1953-08-31 |
| 1954 | 1954-06-23 | 1954-07-28 |
| 1956 | 1956-06-09 | 1956-08-15 |
| 1957 | 1957-07-10 | 1957-08-10 |
| 1958 | 1958-06-28 | 1958-08-18 |
| 1959 | 1959-06-03 | 1959-09-13 |
| 1960 | 1960-06-25 | 1960-09-20 |
| 1961 | 1961-05-21 | 1961-08-31 |
| 1962 | 1962-06-27 | 1962-09-02 |
| 1963 | 1963-05-30 | 1963-10-04 |
| 1964 | 1964-05-20 | 1964-08-06 |
| 1965 | 1965-05-13 | 1965-08-23 |
| 1966 | 1966-05-21 | 1966-09-12 |
| 1967 | 1967-06-03 | 1967-09-12 |
| 1968 | 1968-06-03 | 1968-07-10 |
| 1969 | 1969-05-26 | 1969-09-13 |
| 1970 | 1970-06-04 | 1970-09-19 |
| 1971 | 1971-06-03 | 1971-09-02 |
| 1972 | 1972-05-16 | 1972-08-31 |
| 1973 | 1973-06-01 | 1973-08-29 |
| 1974 | 1974-06-27 | 1974-07-19 |
| 1976 | 1976-06-03 | 1976-09-18 |
| 1977 | 1977-05-10 | 1977-08-09 |
| 1979 | 1979-06-13 | 1979-09-17 |
| 1980 | 1980-04-20 | 1980-09-08 |
| 1983 | 1983-06-10 | 1983-09-03 |
| 1984 | 1984-05-30 | 1984-09-17 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 51 | 56 | 1936 | 28 |
| 35 C (95 F): Days | 36 | 21 | 1936 | 6 |
| 40 C (104 F): Days | 2 | 4 | 1936 | 4 |
| 90 F (32.2 C): Days | 48 | 37 | 1936 | 12 |
| 100 F (37.8 C): Days | 7 | 13 | 1936 | 2 |
| 0 C (32 F): Ice days (max | 51 | 133 | 1951 | 99 |
| 0 C (32 F): Frost days (min | 52 | 215 | 1915 | 204 |
| -10 C (14 F): Days with min | 52 | 137 | 1970 | 98 |
| -20 C (-4 F): Days with min | 52 | 83 | 1936 | 50 |
| -30 C (-22 F): Days with min | 52 | 40 | 1936 | 11 |
| -40 C (-40 F): Days with min | 15 | 10 | 1936 | 1 |
| 20 C (68 F): Tropical nights (min | 28 | 16 | 1936 | 1 |
| 25 C (77 F): Days with min | 2 | 1 | 1936 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 52 | 26 | 1941 | 14 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 50 | 9 | 1944 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 20 | 2 | 1944 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 16 | 2 | 1950 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 2 | 1966 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1911.
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).