Portland Rfc City Threshold Days by Year (USW00024274)
16 fixed thresholds counted per year at Portland Rfc City (USW00024274): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Portland Rfc City Thresholds
- Portland Rfc City: days with 10 mm (0.39 in) or more of precipitation in 101 years, most in 1879 with 59.
- Portland Rfc City: days with 25 mm (0.98 in) or more of precipitation in 101 years, most in 1881 with 15.
- Portland Rfc City: days with a maximum temperature at or above 30 C (86 F) in 98 years, most in 1967 with 45.
- Portland Rfc City: days with a maximum temperature at or above 90 F (32.2 C) in 97 years, most in 1967 with 24.
- 16 fixed thresholds have at least one qualifying day at Portland Rfc City.
Days at or above 30 C (86 F)
98 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1875 | 16 | 10.6 |
| 1876 | 11 | 10.6 |
| 1877 | 9 | 10.6 |
| 1878 | 8 | 10.6 |
| 1879 | 9 | 10.6 |
| 1880 | 9 | 18.3 |
| 1881 | 2 | 18.3 |
| 1882 | 14 | 18.3 |
| 1883 | 7 | 18.3 |
| 1884 | 16 | 18.3 |
| 1885 | 25 | 18.3 |
| 1886 | 27 | 18.3 |
| 1887 | 17 | 18.3 |
| 1888 | 31 | 18.3 |
| 1889 | 35 | 18.3 |
| 1890 | 14 | 15.3 |
| 1891 | 22 | 15.3 |
| 1892 | 18 | 15.3 |
| 1893 | 8 | 15.3 |
| 1894 | 19 | 15.3 |
| 1895 | 12 | 15.3 |
| 1896 | 15 | 15.3 |
| 1897 | 20 | 15.3 |
| 1898 | 18 | 15.3 |
| 1899 | 7 | 15.3 |
| 1900 | 6 | 13.9 |
| 1901 | 10 | 13.9 |
| 1902 | 18 | 13.9 |
| 1903 | 7 | 13.9 |
| 1904 | 25 | 13.9 |
| 1905 | 13 | 13.9 |
| 1906 | 22 | 13.9 |
| 1907 | 12 | 13.9 |
| 1908 | 18 | 13.9 |
| 1909 | 8 | 13.9 |
| 1910 | 10 | 17.9 |
| 1911 | 18 | 17.9 |
| 1912 | 20 | 17.9 |
| 1913 | 16 | 17.9 |
| 1914 | 20 | 17.9 |
| 1915 | 20 | 17.9 |
| 1916 | 12 | 17.9 |
| 1917 | 20 | 17.9 |
| 1918 | 25 | 17.9 |
| 1919 | 18 | 17.9 |
| 1920 | 19 | 19.5 |
| 1921 | 5 | 19.5 |
| 1922 | 18 | 19.5 |
| 1923 | 18 | 19.5 |
| 1924 | 23 | 19.5 |
| 1925 | 22 | 19.5 |
| 1926 | 33 | 19.5 |
| 1927 | 18 | 19.5 |
| 1928 | 19 | 19.5 |
| 1929 | 20 | 19.5 |
| 1930 | 16 | 19.8 |
| 1931 | 28 | 19.8 |
| 1932 | 21 | 19.8 |
| 1933 | 15 | 19.8 |
| 1934 | 16 | 19.8 |
| 1935 | 27 | 19.8 |
| 1936 | 13 | 19.8 |
| 1937 | 15 | 19.8 |
| 1938 | 23 | 19.8 |
| 1939 | 24 | 19.8 |
| 1940 | 24 | 19.3 |
| 1941 | 19 | 19.3 |
| 1942 | 21 | 19.3 |
| 1943 | 17 | 19.3 |
| 1944 | 23 | 19.3 |
| 1945 | 23 | 19.3 |
| 1946 | 20 | 19.3 |
| 1947 | 13 | 19.3 |
| 1948 | 15 | 19.3 |
| 1949 | 18 | 19.3 |
| 1950 | 19 | 20.3 |
| 1951 | 27 | 20.3 |
| 1952 | 33 | 20.3 |
| 1953 | 17 | 20.3 |
| 1954 | 1 | 20.3 |
| 1955 | 13 | 20.3 |
| 1956 | 23 | 20.3 |
| 1957 | 12 | 20.3 |
| 1958 | 37 | 20.3 |
| 1959 | 21 | 20.3 |
| 1960 | 19 | 22.1 |
| 1961 | 27 | 22.1 |
| 1962 | 15 | 22.1 |
| 1963 | 14 | 22.1 |
| 1964 | 14 | 22.1 |
| 1965 | 21 | 22.1 |
| 1966 | 18 | 22.1 |
| 1967 | 45 | 22.1 |
| 1968 | 25 | 22.1 |
| 1969 | 23 | 22.1 |
| 1970 | 30 | 28.3 |
| 1971 | 24 | 28.3 |
| 1972 | 31 | 28.3 |
| Year | First date | Last date |
|---|---|---|
| 1875 | 1875-07-04 | 1875-09-17 |
| 1876 | 1876-06-15 | 1876-09-29 |
| 1877 | 1877-06-10 | 1877-09-01 |
| 1878 | 1878-05-08 | 1878-09-10 |
| 1879 | 1879-07-24 | 1879-08-18 |
| 1880 | 1880-06-24 | 1880-08-20 |
| 1881 | 1881-07-22 | 1881-07-23 |
| 1882 | 1882-06-01 | 1882-08-31 |
| 1883 | 1883-06-12 | 1883-09-21 |
| 1884 | 1884-05-18 | 1884-08-29 |
| 1885 | 1885-05-03 | 1885-08-28 |
| 1886 | 1886-05-22 | 1886-09-12 |
| 1887 | 1887-05-17 | 1887-09-27 |
| 1888 | 1888-05-07 | 1888-09-27 |
| 1889 | 1889-05-11 | 1889-09-25 |
| 1890 | 1890-05-05 | 1890-08-26 |
| 1891 | 1891-06-29 | 1891-09-02 |
| 1892 | 1892-05-20 | 1892-09-11 |
| 1893 | 1893-07-01 | 1893-08-31 |
| 1894 | 1894-05-23 | 1894-09-10 |
| 1895 | 1895-05-12 | 1895-08-28 |
| 1896 | 1896-06-25 | 1896-09-05 |
| 1897 | 1897-04-16 | 1897-09-18 |
| 1898 | 1898-06-05 | 1898-09-07 |
| 1899 | 1899-07-14 | 1899-09-24 |
| 1900 | 1900-06-12 | 1900-09-12 |
| 1901 | 1901-05-25 | 1901-08-22 |
| 1902 | 1902-05-26 | 1902-09-10 |
| 1903 | 1903-06-06 | 1903-09-03 |
| 1904 | 1904-04-12 | 1904-09-13 |
| 1905 | 1905-07-08 | 1905-09-01 |
| 1906 | 1906-04-20 | 1906-08-29 |
| 1907 | 1907-05-30 | 1907-09-09 |
| 1908 | 1908-06-29 | 1908-09-04 |
| 1909 | 1909-05-02 | 1909-09-15 |
| 1910 | 1910-04-23 | 1910-08-18 |
| 1911 | 1911-06-10 | 1911-08-27 |
| 1912 | 1912-05-12 | 1912-08-23 |
| 1913 | 1913-06-01 | 1913-09-12 |
| 1914 | 1914-05-13 | 1914-08-18 |
| 1915 | 1915-06-05 | 1915-08-29 |
| 1916 | 1916-06-13 | 1916-08-30 |
| 1917 | 1917-06-13 | 1917-08-25 |
| 1918 | 1918-06-04 | 1918-09-27 |
| 1919 | 1919-07-08 | 1919-08-29 |
| 1920 | 1920-05-07 | 1920-09-01 |
| 1921 | 1921-07-07 | 1921-08-08 |
| 1922 | 1922-05-30 | 1922-09-11 |
| 1923 | 1923-06-05 | 1923-10-01 |
| 1924 | 1924-05-11 | 1924-09-12 |
| 1925 | 1925-05-05 | 1925-09-23 |
| 1926 | 1926-04-14 | 1926-09-04 |
| 1927 | 1927-05-14 | 1927-08-18 |
| 1928 | 1928-05-10 | 1928-09-22 |
| 1929 | 1929-06-23 | 1929-09-16 |
| 1930 | 1930-06-15 | 1930-09-02 |
| 1931 | 1931-04-27 | 1931-09-04 |
| 1932 | 1932-06-09 | 1932-10-04 |
| 1933 | 1933-06-12 | 1933-08-26 |
| 1934 | 1934-04-19 | 1934-09-03 |
| 1935 | 1935-06-04 | 1935-09-28 |
| 1936 | 1936-05-12 | 1936-10-10 |
| 1937 | 1937-06-01 | 1937-09-14 |
| 1938 | 1938-05-23 | 1938-09-17 |
| 1939 | 1939-05-12 | 1939-09-21 |
| 1940 | 1940-05-09 | 1940-09-23 |
| 1941 | 1941-05-10 | 1941-08-19 |
| 1942 | 1942-06-29 | 1942-09-24 |
| 1943 | 1943-06-29 | 1943-09-24 |
| 1944 | 1944-05-27 | 1944-09-10 |
| 1945 | 1945-05-02 | 1945-09-12 |
| 1946 | 1946-06-19 | 1946-08-23 |
| 1947 | 1947-04-26 | 1947-09-24 |
| 1948 | 1948-06-02 | 1948-09-12 |
| 1949 | 1949-05-11 | 1949-09-27 |
| 1950 | 1950-06-03 | 1950-09-21 |
| 1951 | 1951-05-21 | 1951-09-17 |
| 1952 | 1952-05-16 | 1952-10-06 |
| 1953 | 1953-05-05 | 1953-09-10 |
| 1954 | 1954-05-17 | 1954-05-17 |
| 1955 | 1955-06-07 | 1955-09-06 |
| 1956 | 1956-05-16 | 1956-09-06 |
| 1957 | 1957-04-29 | 1957-09-23 |
| 1958 | 1958-05-15 | 1958-09-07 |
| 1959 | 1959-06-01 | 1959-09-10 |
| 1960 | 1960-06-23 | 1960-09-11 |
| 1961 | 1961-05-19 | 1961-08-22 |
| 1962 | 1962-06-23 | 1962-09-17 |
| 1963 | 1963-05-18 | 1963-09-27 |
| 1964 | 1964-05-30 | 1964-08-24 |
| 1965 | 1965-06-30 | 1965-09-24 |
| 1966 | 1966-05-04 | 1966-09-21 |
| 1967 | 1967-05-16 | 1967-09-27 |
| 1968 | 1968-06-16 | 1968-09-08 |
| 1969 | 1969-05-07 | 1969-09-10 |
| 1970 | 1970-05-15 | 1970-10-02 |
| 1971 | 1971-05-11 | 1971-10-05 |
| 1972 | 1972-05-27 | 1972-09-03 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 98 | 45 | 1967 | 31 |
| 35 C (95 F): Days | 71 | 9 | 1958 | 7 |
| 40 C (104 F): Days | 7 | 2 | 1942 | 1 |
| 90 F (32.2 C): Days | 97 | 24 | 1967 | 17 |
| 100 F (37.8 C): Days | 26 | 4 | 1941 | 1 |
| 0 C (32 F): Ice days (max | 72 | 22 | 1916 | 13 |
| 0 C (32 F): Frost days (min | 97 | 58 | 1884 | 31 |
| -10 C (14 F): Days with min | 30 | 12 | 1888 | 1 |
| 20 C (68 F): Tropical nights (min | 40 | 8 | 1961 | 4 |
| 25 C (77 F): Days with min | 1 | 1 | 1941 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 101 | 59 | 1879 | 45 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 101 | 15 | 1881 | 7 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 52 | 5 | 1882 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 2 | 1882 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 37 | 5 | 1916 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 2 | 1892 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1875.
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).