Ravenswood Lock Park Threshold Days by Year
17 fixed thresholds counted per year at Ravenswood Lock Park (USC00467352): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Ravenswood Lock Park Thresholds
- Ravenswood Lock Park: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 1935 with 51.
- Ravenswood Lock Park: days with 25 mm (0.98 in) or more of precipitation in 55 years, most in 1950 with 13.
- Ravenswood Lock Park: nights with a minimum temperature at or below 0 C (32 F) in 52 years, most in 1944 with 130.
- Ravenswood Lock Park: nights with a minimum temperature at or below -10 C (14 F) in 52 years, most in 1963 with 38.
- 17 fixed thresholds have at least one qualifying day at Ravenswood Lock Park.
Days at or above 30 C (86 F)
49 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1924 | 52 | 69 |
| 1925 | 90 | 69 |
| 1926 | 74 | 69 |
| 1927 | 58 | 69 |
| 1929 | 71 | 69 |
| 1930 | 96 | 91.9 |
| 1931 | 84 | 91.9 |
| 1932 | 88 | 91.9 |
| 1933 | 78 | 91.9 |
| 1934 | 106 | 91.9 |
| 1935 | 68 | 91.9 |
| 1936 | 126 | 91.9 |
| 1938 | 65 | 91.9 |
| 1939 | 116 | 91.9 |
| 1940 | 77 | 68.4 |
| 1941 | 104 | 68.4 |
| 1942 | 87 | 68.4 |
| 1943 | 54 | 68.4 |
| 1944 | 64 | 68.4 |
| 1945 | 40 | 68.4 |
| 1946 | 28 | 68.4 |
| 1947 | 72 | 68.4 |
| 1948 | 79 | 68.4 |
| 1949 | 79 | 68.4 |
| 1950 | 39 | 70.3 |
| 1951 | 71 | 70.3 |
| 1952 | 90 | 70.3 |
| 1953 | 88 | 70.3 |
| 1954 | 73 | 70.3 |
| 1955 | 80 | 70.3 |
| 1956 | 45 | 70.3 |
| 1957 | 74 | 70.3 |
| 1958 | 43 | 70.3 |
| 1959 | 100 | 70.3 |
| 1960 | 60 | 60 |
| 1961 | 52 | 60 |
| 1962 | 64 | 60 |
| 1963 | 45 | 60 |
| 1964 | 76 | 60 |
| 1965 | 73 | 60 |
| 1966 | 73 | 60 |
| 1967 | 25 | 60 |
| 1968 | 72 | 60 |
| 1971 | 41 | 45.2 |
| 1973 | 56 | 45.2 |
| 1975 | 48 | 45.2 |
| 1976 | 34 | 45.2 |
| 1977 | 58 | 45.2 |
| 1978 | 34 | 45.2 |
| Year | First date | Last date |
|---|---|---|
| 1924 | 1924-05-06 | 1924-09-01 |
| 1925 | 1925-04-23 | 1925-10-02 |
| 1926 | 1926-05-01 | 1926-10-13 |
| 1927 | 1927-05-08 | 1927-10-30 |
| 1929 | 1929-03-25 | 1929-09-29 |
| 1930 | 1930-04-11 | 1930-09-26 |
| 1931 | 1931-05-18 | 1931-10-07 |
| 1932 | 1932-05-05 | 1932-09-19 |
| 1933 | 1933-05-20 | 1933-09-29 |
| 1934 | 1934-04-03 | 1934-09-27 |
| 1935 | 1935-04-26 | 1935-09-25 |
| 1936 | 1936-04-29 | 1936-10-10 |
| 1938 | 1938-04-19 | 1938-10-19 |
| 1939 | 1939-04-24 | 1939-10-11 |
| 1940 | 1940-05-06 | 1940-09-23 |
| 1941 | 1941-04-13 | 1941-10-08 |
| 1942 | 1942-04-25 | 1942-09-20 |
| 1943 | 1943-05-20 | 1943-09-06 |
| 1944 | 1944-05-12 | 1944-09-20 |
| 1945 | 1945-06-01 | 1945-09-28 |
| 1946 | 1946-06-25 | 1946-10-05 |
| 1947 | 1947-06-07 | 1947-10-23 |
| 1948 | 1948-04-07 | 1948-11-05 |
| 1949 | 1949-05-04 | 1949-10-12 |
| 1950 | 1950-05-04 | 1950-09-11 |
| 1951 | 1951-04-29 | 1951-10-05 |
| 1952 | 1952-04-21 | 1952-10-01 |
| 1953 | 1953-05-12 | 1953-10-20 |
| 1954 | 1954-05-28 | 1954-10-06 |
| 1955 | 1955-05-04 | 1955-09-23 |
| 1956 | 1956-05-13 | 1956-09-06 |
| 1957 | 1957-04-25 | 1957-09-22 |
| 1958 | 1958-06-05 | 1958-09-26 |
| 1959 | 1959-05-02 | 1959-10-06 |
| 1960 | 1960-04-23 | 1960-09-09 |
| 1961 | 1961-05-08 | 1961-11-04 |
| 1962 | 1962-04-26 | 1962-09-14 |
| 1963 | 1963-05-09 | 1963-10-16 |
| 1964 | 1964-05-07 | 1964-09-23 |
| 1965 | 1965-05-02 | 1965-09-23 |
| 1966 | 1966-05-08 | 1966-09-04 |
| 1967 | 1967-03-28 | 1967-08-18 |
| 1968 | 1968-06-05 | 1968-09-25 |
| 1971 | 1971-05-18 | 1971-09-29 |
| 1973 | 1973-06-04 | 1973-09-28 |
| 1975 | 1975-05-24 | 1975-09-06 |
| 1976 | 1976-04-18 | 1976-09-13 |
| 1977 | 1977-05-06 | 1977-09-13 |
| 1978 | 1978-05-26 | 1978-09-21 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 49 | 126 | 1936 | 34 |
| 35 C (95 F): Days | 37 | 56 | 1936 | 1 |
| 40 C (104 F): Days | 2 | 9 | 1936 | 9 |
| 90 F (32.2 C): Days | 49 | 98 | 1936 | 11 |
| 100 F (37.8 C): Days | 16 | 16 | 1936 | 1 |
| 0 C (32 F): Ice days (max | 49 | 37 | 1977 | 27 |
| 0 C (32 F): Frost days (min | 52 | 130 | 1944 | 105 |
| -10 C (14 F): Days with min | 52 | 38 | 1963 | 21 |
| -20 C (-4 F): Days with min | 22 | 10 | 1977 | 2 |
| -30 C (-22 F): Days with min | 1 | 1 | 1936 | 1 |
| 20 C (68 F): Tropical nights (min | 52 | 32 | 1947 | 16 |
| 25 C (77 F): Days with min | 5 | 3 | 1945 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 55 | 51 | 1935 | 36 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 55 | 13 | 1950 | 10 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 33 | 4 | 1933 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 9 | 3 | 1966 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1966 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.
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).