Aroostook Threshold Days by Year
17 fixed thresholds counted per year at Aroostook (CA008100300): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Aroostook Thresholds
- Aroostook: days with 10 cm (3.9 in) or more of snowfall in 49 years, most in 1976 with 15.
- Aroostook: days with a maximum temperature at or below 0 C (32 F) in 47 years, most in 1955 with 109.
- Aroostook: nights with a minimum temperature at or below 0 C (32 F) in 47 years, most in 1939 with 216.
- Aroostook: nights with a minimum temperature at or below -10 C (14 F) in 47 years, most in 1939 with 115.
- 17 fixed thresholds have at least one qualifying day at Aroostook.
Days at or above 30 C (86 F)
46 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1930 | 6 | 7.4 |
| 1931 | 7 | 7.4 |
| 1932 | 2 | 7.4 |
| 1933 | 3 | 7.4 |
| 1934 | 2 | 7.4 |
| 1935 | 12 | 7.4 |
| 1937 | 19 | 7.4 |
| 1938 | 5 | 7.4 |
| 1939 | 11 | 7.4 |
| 1942 | 7 | 22 |
| 1947 | 37 | 22 |
| 1948 | 21 | 22 |
| 1949 | 23 | 22 |
| 1950 | 6 | 7.3 |
| 1951 | 6 | 7.3 |
| 1952 | 15 | 7.3 |
| 1953 | 8 | 7.3 |
| 1954 | 3 | 7.3 |
| 1955 | 13 | 7.3 |
| 1956 | 1 | 7.3 |
| 1957 | 4 | 7.3 |
| 1958 | 3 | 7.3 |
| 1959 | 14 | 7.3 |
| 1960 | 12 | 5.1 |
| 1961 | 2 | 5.1 |
| 1962 | 4 | 5.1 |
| 1963 | 11 | 5.1 |
| 1964 | 2 | 5.1 |
| 1966 | 1 | 5.1 |
| 1967 | 4 | 5.1 |
| 1968 | 5 | 5.1 |
| 1969 | 5 | 5.1 |
| 1970 | 15 | 8 |
| 1971 | 4 | 8 |
| 1972 | 5 | 8 |
| 1973 | 4 | 8 |
| 1974 | 5 | 8 |
| 1975 | 13 | 8 |
| 1976 | 12 | 8 |
| 1977 | 8 | 8 |
| 1978 | 6 | 8 |
| 1979 | 8 | 8 |
| 1980 | 5 | 6.3 |
| 1981 | 4 | 6.3 |
| 1982 | 5 | 6.3 |
| 1983 | 11 | 6.3 |
| Year | First date | Last date |
|---|---|---|
| 1930 | 1930-06-03 | 1930-07-19 |
| 1931 | 1931-05-20 | 1931-09-13 |
| 1932 | 1932-05-16 | 1932-08-06 |
| 1933 | 1933-06-28 | 1933-08-23 |
| 1934 | 1934-05-28 | 1934-08-18 |
| 1935 | 1935-07-04 | 1935-08-21 |
| 1937 | 1937-05-30 | 1937-09-03 |
| 1938 | 1938-06-21 | 1938-08-16 |
| 1939 | 1939-07-05 | 1939-09-16 |
| 1942 | 1942-06-11 | 1942-09-02 |
| 1947 | 1947-06-21 | 1947-09-12 |
| 1948 | 1948-06-04 | 1948-09-07 |
| 1949 | 1949-06-02 | 1949-08-27 |
| 1950 | 1950-05-24 | 1950-08-09 |
| 1951 | 1951-05-20 | 1951-09-13 |
| 1952 | 1952-07-02 | 1952-08-29 |
| 1953 | 1953-05-10 | 1953-08-30 |
| 1954 | 1954-06-18 | 1954-06-22 |
| 1955 | 1955-05-22 | 1955-08-22 |
| 1956 | 1956-06-14 | 1956-06-14 |
| 1957 | 1957-06-11 | 1957-07-19 |
| 1958 | 1958-07-23 | 1958-08-03 |
| 1959 | 1959-05-26 | 1959-07-30 |
| 1960 | 1960-05-27 | 1960-09-08 |
| 1961 | 1961-07-20 | 1961-07-21 |
| 1962 | 1962-05-19 | 1962-06-30 |
| 1963 | 1963-06-02 | 1963-07-29 |
| 1964 | 1964-05-24 | 1964-07-18 |
| 1966 | 1966-05-24 | 1966-05-24 |
| 1967 | 1967-06-03 | 1967-07-20 |
| 1968 | 1968-07-09 | 1968-07-19 |
| 1969 | 1969-06-13 | 1969-07-17 |
| 1970 | 1970-06-09 | 1970-08-16 |
| 1971 | 1971-06-18 | 1971-08-11 |
| 1972 | 1972-05-27 | 1972-07-15 |
| 1973 | 1973-07-24 | 1973-07-28 |
| 1974 | 1974-05-15 | 1974-08-22 |
| 1975 | 1975-06-23 | 1975-08-11 |
| 1976 | 1976-06-06 | 1976-08-22 |
| 1977 | 1977-05-22 | 1977-08-29 |
| 1978 | 1978-05-28 | 1978-08-16 |
| 1979 | 1979-06-16 | 1979-08-05 |
| 1980 | 1980-06-14 | 1980-08-24 |
| 1981 | 1981-07-03 | 1981-08-02 |
| 1982 | 1982-07-07 | 1982-07-19 |
| 1983 | 1983-06-21 | 1983-09-06 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 46 | 37 | 1947 | 11 |
| 35 C (95 F): Days | 5 | 5 | 1947 | 1 |
| 90 F (32.2 C): Days | 32 | 19 | 1947 | 5 |
| 0 C (32 F): Ice days (max | 47 | 109 | 1955 | 79 |
| 0 C (32 F): Frost days (min | 47 | 216 | 1939 | 175 |
| -10 C (14 F): Days with min | 47 | 115 | 1939 | 67 |
| -20 C (-4 F): Days with min | 47 | 64 | 1934 | 26 |
| -30 C (-22 F): Days with min | 45 | 28 | 1934 | 8 |
| -40 C (-40 F): Days with min | 5 | 2 | 1933 | 1 |
| 20 C (68 F): Tropical nights (min | 28 | 8 | 1937 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 47 | 53 | 1976 | 46 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 15 | 1954 | 11 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 25 | 3 | 1952 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 1933 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 49 | 15 | 1976 | 7 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 33 | 4 | 1951 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1952 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.
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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).