Glen Alvon Threshold Days by Year
4 fixed thresholds counted per year at Glen Alvon (ASN00042011): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Glen Alvon Thresholds
- Glen Alvon: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1983 with 32.
- Glen Alvon: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1983 with 15.
- Glen Alvon: days with 50 mm (1.97 in) or more of precipitation in 55 years, most in 1997 with 5.
- Glen Alvon: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1983 with 2.
- 4 fixed thresholds have at least one qualifying day at Glen Alvon.
Days with 10 mm (0.39 in) or more of precipitation
71 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1932 | 10 | 15.6 |
| 1933 | 24 | 15.6 |
| 1934 | 24 | 15.6 |
| 1935 | 9 | 15.6 |
| 1936 | 16 | 15.6 |
| 1937 | 14 | 15.6 |
| 1938 | 10 | 15.6 |
| 1939 | 18 | 15.6 |
| 1940 | 12 | 17 |
| 1941 | 20 | 17 |
| 1942 | 18 | 17 |
| 1943 | 14 | 17 |
| 1944 | 14 | 17 |
| 1945 | 23 | 17 |
| 1946 | 13 | 17 |
| 1947 | 25 | 17 |
| 1948 | 14 | 17 |
| 1949 | 17 | 17 |
| 1950 | 30 | 20.8 |
| 1951 | 16 | 20.8 |
| 1952 | 20 | 20.8 |
| 1953 | 20 | 20.8 |
| 1954 | 30 | 20.8 |
| 1955 | 16 | 20.8 |
| 1956 | 22 | 20.8 |
| 1957 | 9 | 20.8 |
| 1958 | 26 | 20.8 |
| 1959 | 19 | 20.8 |
| 1960 | 17 | 18.2 |
| 1961 | 22 | 18.2 |
| 1962 | 24 | 18.2 |
| 1963 | 27 | 18.2 |
| 1964 | 17 | 18.2 |
| 1965 | 14 | 18.2 |
| 1966 | 16 | 18.2 |
| 1967 | 10 | 18.2 |
| 1968 | 13 | 18.2 |
| 1969 | 22 | 18.2 |
| 1970 | 22 | 19.3 |
| 1971 | 23 | 19.3 |
| 1972 | 14 | 19.3 |
| 1973 | 21 | 19.3 |
| 1974 | 16 | 19.3 |
| 1975 | 15 | 19.3 |
| 1976 | 18 | 19.3 |
| 1977 | 19 | 19.3 |
| 1978 | 31 | 19.3 |
| 1979 | 14 | 19.3 |
| 1980 | 10 | 20.5 |
| 1981 | 19 | 20.5 |
| 1982 | 15 | 20.5 |
| 1983 | 32 | 20.5 |
| 1984 | 25 | 20.5 |
| 1985 | 25 | 20.5 |
| 1986 | 17 | 20.5 |
| 1987 | 25 | 20.5 |
| 1988 | 21 | 20.5 |
| 1989 | 16 | 20.5 |
| 1990 | 22 | 19.2 |
| 1991 | 20 | 19.2 |
| 1992 | 9 | 19.2 |
| 1993 | 14 | 19.2 |
| 1994 | 14 | 19.2 |
| 1995 | 24 | 19.2 |
| 1996 | 22 | 19.2 |
| 1997 | 22 | 19.2 |
| 1998 | 25 | 19.2 |
| 1999 | 20 | 19.2 |
| 2000 | 15 | 13.7 |
| 2001 | 16 | 13.7 |
| 2002 | 10 | 13.7 |
| Year | First date | Last date |
|---|---|---|
| 1932 | 1932-03-17 | 1932-12-19 |
| 1933 | 1933-01-28 | 1933-12-14 |
| 1934 | 1934-02-01 | 1934-12-28 |
| 1935 | 1935-01-14 | 1935-12-03 |
| 1936 | 1936-01-07 | 1936-12-16 |
| 1937 | 1937-01-12 | 1937-11-22 |
| 1938 | 1938-01-31 | 1938-11-28 |
| 1939 | 1939-01-24 | 1939-12-18 |
| 1940 | 1940-02-01 | 1940-12-18 |
| 1941 | 1941-01-04 | 1941-11-11 |
| 1942 | 1942-01-12 | 1942-12-30 |
| 1943 | 1943-01-01 | 1943-12-19 |
| 1944 | 1944-01-12 | 1944-12-01 |
| 1945 | 1945-01-01 | 1945-12-18 |
| 1946 | 1946-01-07 | 1946-12-13 |
| 1947 | 1947-01-07 | 1947-12-25 |
| 1948 | 1948-01-02 | 1948-12-31 |
| 1949 | 1949-01-09 | 1949-11-21 |
| 1950 | 1950-01-18 | 1950-11-25 |
| 1951 | 1951-01-01 | 1951-12-25 |
| 1952 | 1952-02-19 | 1952-10-27 |
| 1953 | 1953-02-16 | 1953-11-06 |
| 1954 | 1954-01-16 | 1954-12-13 |
| 1955 | 1955-01-09 | 1955-12-19 |
| 1956 | 1956-01-20 | 1956-12-14 |
| 1957 | 1957-01-04 | 1957-12-31 |
| 1958 | 1958-01-20 | 1958-12-30 |
| 1959 | 1959-01-10 | 1959-12-24 |
| 1960 | 1960-01-20 | 1960-12-02 |
| 1961 | 1961-01-03 | 1961-12-31 |
| 1962 | 1962-01-02 | 1962-12-31 |
| 1963 | 1963-01-02 | 1963-12-30 |
| 1964 | 1964-01-14 | 1964-11-23 |
| 1965 | 1965-01-24 | 1965-12-15 |
| 1966 | 1966-02-04 | 1966-12-30 |
| 1967 | 1967-01-05 | 1967-12-29 |
| 1968 | 1968-01-12 | 1968-12-05 |
| 1969 | 1969-01-17 | 1969-12-22 |
| 1970 | 1970-01-08 | 1970-12-26 |
| 1971 | 1971-01-14 | 1971-12-28 |
| 1972 | 1972-01-04 | 1972-12-31 |
| 1973 | 1973-01-13 | 1973-12-31 |
| 1974 | 1974-01-02 | 1974-12-28 |
| 1975 | 1975-01-09 | 1975-12-23 |
| 1976 | 1976-01-14 | 1976-12-22 |
| 1977 | 1977-01-06 | 1977-12-23 |
| 1978 | 1978-01-05 | 1978-12-27 |
| 1979 | 1979-01-18 | 1979-11-19 |
| 1980 | 1980-02-06 | 1980-12-15 |
| 1981 | 1981-02-05 | 1981-12-18 |
| 1982 | 1982-01-15 | 1982-12-29 |
| 1983 | 1983-01-01 | 1983-12-05 |
| 1984 | 1984-01-02 | 1984-12-12 |
| 1985 | 1985-01-01 | 1985-12-23 |
| 1986 | 1986-01-06 | 1986-12-01 |
| 1987 | 1987-01-02 | 1987-12-12 |
| 1988 | 1988-02-14 | 1988-12-20 |
| 1989 | 1989-01-02 | 1989-12-05 |
| 1990 | 1990-01-16 | 1990-12-04 |
| 1991 | 1991-01-05 | 1991-12-30 |
| 1992 | 1992-01-25 | 1992-12-05 |
| 1993 | 1993-01-06 | 1993-12-23 |
| 1994 | 1994-01-21 | 1994-12-25 |
| 1995 | 1995-01-07 | 1995-12-24 |
| 1996 | 1996-01-03 | 1996-12-19 |
| 1997 | 1997-01-30 | 1997-12-20 |
| 1998 | 1998-01-31 | 1998-12-21 |
| 1999 | 1999-01-01 | 1999-12-28 |
| 2000 | 2000-01-05 | 2000-12-29 |
| 2001 | 2001-01-17 | 2001-12-16 |
| 2002 | 2002-01-07 | 2002-12-10 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 10 mm (0.39 in): Days with 10 mm or more rain | 71 | 32 | 1983 | 10 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 71 | 15 | 1983 | 4 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 55 | 5 | 1997 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 2 | 1983 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1932.
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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).