Markland Dam 39 Threshold Days by Year (USC00125381)
19 fixed thresholds counted per year at Markland Dam 39 (USC00125381): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Markland Dam 39 Thresholds
- Markland Dam 39: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1911 with 55.
- Markland Dam 39: days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 1911 with 28.
- Markland Dam 39: nights with a minimum temperature at or below 0 C (32 F) in 54 years, most in 1925 with 129.
- Markland Dam 39: nights with a minimum temperature at or below -10 C (14 F) in 54 years, most in 1958 with 37.
- 19 fixed thresholds have at least one qualifying day at Markland Dam 39.
Days at or above 30 C (86 F)
53 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1901 | 74 | 56.8 |
| 1902 | 50 | 56.8 |
| 1903 | 50 | 56.8 |
| 1904 | 43 | 56.8 |
| 1905 | 35 | 56.8 |
| 1906 | 61 | 56.8 |
| 1908 | 93 | 56.8 |
| 1909 | 48 | 56.8 |
| 1910 | 58 | 70.4 |
| 1911 | 82 | 70.4 |
| 1913 | 93 | 70.4 |
| 1914 | 84 | 70.4 |
| 1915 | 45 | 70.4 |
| 1916 | 76 | 70.4 |
| 1917 | 59 | 70.4 |
| 1918 | 66 | 70.4 |
| 1923 | 68 | 61.9 |
| 1924 | 52 | 61.9 |
| 1925 | 96 | 61.9 |
| 1926 | 87 | 61.9 |
| 1927 | 25 | 61.9 |
| 1928 | 52 | 61.9 |
| 1929 | 53 | 61.9 |
| 1930 | 84 | 73.8 |
| 1931 | 80 | 73.8 |
| 1932 | 62 | 73.8 |
| 1933 | 79 | 73.8 |
| 1934 | 65 | 73.8 |
| 1935 | 67 | 73.8 |
| 1936 | 104 | 73.8 |
| 1937 | 51 | 73.8 |
| 1938 | 61 | 73.8 |
| 1939 | 85 | 73.8 |
| 1940 | 70 | 65.8 |
| 1941 | 88 | 65.8 |
| 1942 | 72 | 65.8 |
| 1943 | 70 | 65.8 |
| 1944 | 86 | 65.8 |
| 1945 | 52 | 65.8 |
| 1946 | 39 | 65.8 |
| 1947 | 59 | 65.8 |
| 1948 | 56 | 65.8 |
| 1949 | 66 | 65.8 |
| 1950 | 19 | 66.5 |
| 1951 | 77 | 66.5 |
| 1952 | 80 | 66.5 |
| 1953 | 90 | 66.5 |
| 1954 | 96 | 66.5 |
| 1955 | 74 | 66.5 |
| 1956 | 50 | 66.5 |
| 1957 | 52 | 66.5 |
| 1958 | 37 | 66.5 |
| 1959 | 90 | 66.5 |
| Year | First date | Last date |
|---|---|---|
| 1901 | 1901-04-30 | 1901-09-25 |
| 1902 | 1902-04-21 | 1902-09-08 |
| 1903 | 1903-05-17 | 1903-09-15 |
| 1904 | 1904-05-25 | 1904-10-10 |
| 1905 | 1905-05-04 | 1905-09-28 |
| 1906 | 1906-05-15 | 1906-09-20 |
| 1908 | 1908-05-16 | 1908-09-27 |
| 1909 | 1909-06-07 | 1909-09-22 |
| 1910 | 1910-03-24 | 1910-10-03 |
| 1911 | 1911-05-09 | 1911-09-27 |
| 1913 | 1913-04-18 | 1913-10-10 |
| 1914 | 1914-05-11 | 1914-09-22 |
| 1915 | 1915-04-19 | 1915-09-18 |
| 1916 | 1916-05-07 | 1916-10-08 |
| 1917 | 1917-04-19 | 1917-09-15 |
| 1918 | 1918-05-04 | 1918-10-06 |
| 1923 | 1923-06-02 | 1923-09-28 |
| 1924 | 1924-06-08 | 1924-09-21 |
| 1925 | 1925-04-13 | 1925-09-26 |
| 1926 | 1926-05-06 | 1926-10-05 |
| 1927 | 1927-05-21 | 1927-10-02 |
| 1928 | 1928-06-19 | 1928-10-15 |
| 1929 | 1929-03-25 | 1929-09-28 |
| 1930 | 1930-04-11 | 1930-10-14 |
| 1931 | 1931-05-27 | 1931-10-03 |
| 1932 | 1932-05-26 | 1932-09-19 |
| 1933 | 1933-05-25 | 1933-09-30 |
| 1934 | 1934-05-09 | 1934-10-21 |
| 1935 | 1935-04-26 | 1935-10-14 |
| 1936 | 1936-05-07 | 1936-09-22 |
| 1937 | 1937-05-21 | 1937-10-01 |
| 1938 | 1938-06-11 | 1938-10-17 |
| 1939 | 1939-05-18 | 1939-10-09 |
| 1940 | 1940-05-07 | 1940-10-27 |
| 1941 | 1941-05-15 | 1941-10-07 |
| 1942 | 1942-04-30 | 1942-10-03 |
| 1943 | 1943-06-03 | 1943-10-11 |
| 1944 | 1944-05-12 | 1944-09-20 |
| 1945 | 1945-06-01 | 1945-09-28 |
| 1946 | 1946-06-11 | 1946-10-06 |
| 1947 | 1947-06-07 | 1947-10-23 |
| 1948 | 1948-06-02 | 1948-09-20 |
| 1949 | 1949-05-04 | 1949-10-11 |
| 1950 | 1950-05-26 | 1950-09-02 |
| 1951 | 1951-05-02 | 1951-10-06 |
| 1952 | 1952-05-03 | 1952-10-02 |
| 1953 | 1953-05-23 | 1953-10-22 |
| 1954 | 1954-04-25 | 1954-10-13 |
| 1955 | 1955-04-19 | 1955-09-23 |
| 1956 | 1956-06-13 | 1956-10-16 |
| 1957 | 1957-05-23 | 1957-09-04 |
| 1958 | 1958-04-19 | 1958-09-28 |
| 1959 | 1959-05-03 | 1959-10-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 53 | 104 | 1936 | 90 |
| 35 C (95 F): Days | 47 | 39 | 1936 | 26 |
| 40 C (104 F): Days | 6 | 5 | 1934 | 1 |
| 90 F (32.2 C): Days | 53 | 77 | 1936 | 67 |
| 100 F (37.8 C): Days | 18 | 18 | 1936 | 4 |
| 0 C (32 F): Ice days (max | 53 | 33 | 1918 | 9 |
| 0 C (32 F): Frost days (min | 54 | 129 | 1925 | 117 |
| -10 C (14 F): Days with min | 54 | 37 | 1958 | 20 |
| -20 C (-4 F): Days with min | 24 | 13 | 1918 | 1 |
| -30 C (-22 F): Days with min | 1 | 2 | 1918 | 2 |
| 20 C (68 F): Tropical nights (min | 54 | 68 | 1906 | 54 |
| 25 C (77 F): Days with min | 17 | 10 | 1906 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 59 | 55 | 1911 | 31 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 59 | 28 | 1911 | 10 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 50 | 6 | 1948 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 6 | 1 | 1909 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 27 | 6 | 1917 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 4 | 1 | 1910 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1917 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.
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).