Towson Threshold Days by Year (USC00188877)
19 fixed thresholds counted per year at Towson (USC00188877): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Towson Thresholds
- Towson: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1989 with 62.
- Towson: days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 1971 with 25.
- Towson: days with 50 mm (1.97 in) or more of precipitation in 50 years, most in 1971 with 8.
- Towson: nights with a minimum temperature at or below 0 C (32 F) in 43 years, most in 1915 with 132.
- 19 fixed thresholds have at least one qualifying day at Towson.
Days at or above 30 C (86 F)
41 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1909 | 51 | 51 |
| 1910 | 50 | 47 |
| 1911 | 60 | 47 |
| 1913 | 52 | 47 |
| 1914 | 61 | 47 |
| 1915 | 46 | 47 |
| 1916 | 35 | 47 |
| 1917 | 33 | 47 |
| 1918 | 39 | 47 |
| 1949 | 55 | 55 |
| 1950 | 44 | 65.7 |
| 1951 | 62 | 65.7 |
| 1952 | 65 | 65.7 |
| 1953 | 69 | 65.7 |
| 1954 | 68 | 65.7 |
| 1955 | 70 | 65.7 |
| 1956 | 62 | 65.7 |
| 1957 | 84 | 65.7 |
| 1958 | 49 | 65.7 |
| 1959 | 84 | 65.7 |
| 1960 | 59 | 58.3 |
| 1961 | 59 | 58.3 |
| 1963 | 50 | 58.3 |
| 1964 | 61 | 58.3 |
| 1965 | 67 | 58.3 |
| 1969 | 54 | 58.3 |
| 1970 | 62 | 48.1 |
| 1971 | 39 | 48.1 |
| 1972 | 38 | 48.1 |
| 1973 | 55 | 48.1 |
| 1974 | 46 | 48.1 |
| 1975 | 47 | 48.1 |
| 1976 | 47 | 48.1 |
| 1977 | 62 | 48.1 |
| 1978 | 47 | 48.1 |
| 1979 | 38 | 48.1 |
| 1982 | 44 | 59 |
| 1983 | 81 | 59 |
| 1986 | 65 | 59 |
| 1988 | 66 | 59 |
| 1989 | 39 | 59 |
| Year | First date | Last date |
|---|---|---|
| 1909 | 1909-04-19 | 1909-08-29 |
| 1910 | 1910-03-30 | 1910-10-01 |
| 1911 | 1911-05-11 | 1911-09-25 |
| 1913 | 1913-05-02 | 1913-09-08 |
| 1914 | 1914-05-11 | 1914-09-23 |
| 1915 | 1915-04-20 | 1915-09-18 |
| 1916 | 1916-05-28 | 1916-10-08 |
| 1917 | 1917-05-20 | 1917-08-29 |
| 1918 | 1918-05-06 | 1918-08-29 |
| 1949 | 1949-05-05 | 1949-10-11 |
| 1950 | 1950-05-06 | 1950-11-01 |
| 1951 | 1951-05-16 | 1951-10-06 |
| 1952 | 1952-06-06 | 1952-09-15 |
| 1953 | 1953-04-25 | 1953-09-30 |
| 1954 | 1954-05-31 | 1954-10-14 |
| 1955 | 1955-05-05 | 1955-09-20 |
| 1956 | 1956-04-28 | 1956-09-24 |
| 1957 | 1957-04-21 | 1957-09-22 |
| 1958 | 1958-06-01 | 1958-09-27 |
| 1959 | 1959-04-09 | 1959-10-07 |
| 1960 | 1960-04-14 | 1960-09-10 |
| 1961 | 1961-06-02 | 1961-09-26 |
| 1963 | 1963-05-09 | 1963-09-13 |
| 1964 | 1964-05-08 | 1964-09-24 |
| 1965 | 1965-05-03 | 1965-09-24 |
| 1969 | 1969-04-27 | 1969-09-17 |
| 1970 | 1970-05-09 | 1970-09-27 |
| 1971 | 1971-06-04 | 1971-09-10 |
| 1972 | 1972-06-04 | 1972-09-26 |
| 1973 | 1973-06-04 | 1973-09-06 |
| 1974 | 1974-04-29 | 1974-09-14 |
| 1975 | 1975-05-21 | 1975-08-28 |
| 1976 | 1976-04-16 | 1976-09-14 |
| 1977 | 1977-04-12 | 1977-09-19 |
| 1978 | 1978-05-20 | 1978-09-19 |
| 1979 | 1979-05-09 | 1979-09-06 |
| 1982 | 1982-05-31 | 1982-09-14 |
| 1983 | 1983-06-11 | 1983-10-04 |
| 1986 | 1986-05-06 | 1986-10-03 |
| 1988 | 1988-05-23 | 1988-09-24 |
| 1989 | 1989-05-02 | 1989-09-21 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 41 | 84 | 1957 | 39 |
| 35 C (95 F): Days | 32 | 22 | 1955 | 1 |
| 40 C (104 F): Days | 1 | 1 | 1918 | 1 |
| 90 F (32.2 C): Days | 41 | 60 | 1983 | 18 |
| 100 F (37.8 C): Days | 13 | 6 | 1983 | 2 |
| 0 C (32 F): Ice days (max | 40 | 28 | 1918 | 19 |
| 0 C (32 F): Frost days (min | 43 | 132 | 1915 | 64 |
| -10 C (14 F): Days with min | 43 | 29 | 1963 | 1 |
| -20 C (-4 F): Days with min | 4 | 1 | 1917 | 1 |
| 20 C (68 F): Tropical nights (min | 43 | 56 | 1973 | 31 |
| 25 C (77 F): Days with min | 17 | 10 | 1986 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 59 | 62 | 1989 | 44 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 59 | 25 | 1971 | 15 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 50 | 8 | 1971 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 12 | 2 | 1955 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 2 | 1 | 1955 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 16 | 3 | 1945 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 1 | 1979 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1979 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1909.
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).