Millsboro Threshold Days by Year (USC00076020)
17 fixed thresholds counted per year at Millsboro (USC00076020): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Millsboro Thresholds
- Millsboro: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1930 with 86.
- Millsboro: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 1930 with 59.
- Millsboro: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1904 with 131.
- Millsboro: nights with a minimum temperature at or above 20 C (68 F) in 59 years, most in 1898 with 66.
- 17 fixed thresholds have at least one qualifying day at Millsboro.
Days at or above 30 C (86 F)
60 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1893 | 42 | 47.6 |
| 1894 | 50 | 47.6 |
| 1895 | 54 | 47.6 |
| 1896 | 56 | 47.6 |
| 1897 | 31 | 47.6 |
| 1898 | 54 | 47.6 |
| 1899 | 46 | 47.6 |
| 1900 | 71 | 53.4 |
| 1901 | 53 | 53.4 |
| 1902 | 43 | 53.4 |
| 1903 | 37 | 53.4 |
| 1904 | 64 | 53.4 |
| 1905 | 58 | 53.4 |
| 1906 | 68 | 53.4 |
| 1907 | 44 | 53.4 |
| 1908 | 50 | 53.4 |
| 1909 | 46 | 53.4 |
| 1910 | 50 | 52.8 |
| 1911 | 60 | 52.8 |
| 1912 | 55 | 52.8 |
| 1913 | 40 | 52.8 |
| 1914 | 42 | 52.8 |
| 1915 | 81 | 52.8 |
| 1916 | 50 | 52.8 |
| 1917 | 50 | 52.8 |
| 1918 | 50 | 52.8 |
| 1919 | 50 | 52.8 |
| 1920 | 47 | 58.6 |
| 1921 | 77 | 58.6 |
| 1922 | 53 | 58.6 |
| 1923 | 49 | 58.6 |
| 1924 | 47 | 58.6 |
| 1925 | 80 | 58.6 |
| 1926 | 64 | 58.6 |
| 1927 | 50 | 58.6 |
| 1928 | 55 | 58.6 |
| 1929 | 64 | 58.6 |
| 1930 | 86 | 67.5 |
| 1931 | 72 | 67.5 |
| 1932 | 75 | 67.5 |
| 1933 | 74 | 67.5 |
| 1934 | 64 | 67.5 |
| 1935 | 51 | 67.5 |
| 1936 | 60 | 67.5 |
| 1937 | 51 | 67.5 |
| 1938 | 64 | 67.5 |
| 1939 | 78 | 67.5 |
| 1940 | 43 | 60.7 |
| 1942 | 69 | 60.7 |
| 1943 | 76 | 60.7 |
| 1944 | 66 | 60.7 |
| 1945 | 57 | 60.7 |
| 1946 | 64 | 60.7 |
| 1947 | 67 | 60.7 |
| 1948 | 54 | 60.7 |
| 1949 | 50 | 60.7 |
| 1950 | 47 | 52.8 |
| 1951 | 52 | 52.8 |
| 1952 | 52 | 52.8 |
| 1953 | 60 | 52.8 |
| Year | First date | Last date |
|---|---|---|
| 1893 | 1893-06-04 | 1893-09-19 |
| 1894 | 1894-05-02 | 1894-09-16 |
| 1895 | 1895-04-25 | 1895-09-26 |
| 1896 | 1896-04-13 | 1896-09-20 |
| 1897 | 1897-04-26 | 1897-10-17 |
| 1898 | 1898-05-21 | 1898-09-19 |
| 1899 | 1899-05-03 | 1899-09-09 |
| 1900 | 1900-05-09 | 1900-09-13 |
| 1901 | 1901-06-12 | 1901-09-17 |
| 1902 | 1902-04-24 | 1902-09-21 |
| 1903 | 1903-05-01 | 1903-09-16 |
| 1904 | 1904-05-24 | 1904-10-11 |
| 1905 | 1905-05-07 | 1905-10-05 |
| 1906 | 1906-04-19 | 1906-09-23 |
| 1907 | 1907-03-28 | 1907-09-24 |
| 1908 | 1908-05-13 | 1908-09-19 |
| 1909 | 1909-04-06 | 1909-09-23 |
| 1910 | 1910-04-05 | 1910-10-06 |
| 1911 | 1911-05-01 | 1911-09-25 |
| 1912 | 1912-05-24 | 1912-10-12 |
| 1913 | 1913-05-03 | 1913-09-08 |
| 1914 | 1914-05-26 | 1914-10-10 |
| 1915 | 1915-04-20 | 1915-10-15 |
| 1916 | 1916-04-21 | 1916-10-09 |
| 1917 | 1917-04-21 | 1917-09-21 |
| 1918 | 1918-05-06 | 1918-09-05 |
| 1919 | 1919-05-04 | 1919-10-28 |
| 1920 | 1920-05-11 | 1920-10-22 |
| 1921 | 1921-03-21 | 1921-09-30 |
| 1922 | 1922-04-10 | 1922-10-05 |
| 1923 | 1923-05-27 | 1923-09-24 |
| 1924 | 1924-05-06 | 1924-09-13 |
| 1925 | 1925-04-26 | 1925-10-17 |
| 1926 | 1926-04-22 | 1926-10-05 |
| 1927 | 1927-04-20 | 1927-10-07 |
| 1928 | 1928-05-04 | 1928-10-17 |
| 1929 | 1929-04-06 | 1929-09-13 |
| 1930 | 1930-05-01 | 1930-09-26 |
| 1931 | 1931-05-28 | 1931-10-07 |
| 1932 | 1932-05-07 | 1932-09-23 |
| 1933 | 1933-05-14 | 1933-09-27 |
| 1934 | 1934-05-05 | 1934-09-27 |
| 1935 | 1935-05-28 | 1935-09-21 |
| 1936 | 1936-05-08 | 1936-09-12 |
| 1937 | 1937-04-18 | 1937-09-05 |
| 1938 | 1938-04-20 | 1938-10-17 |
| 1939 | 1939-04-25 | 1939-10-10 |
| 1940 | 1940-05-14 | 1940-09-21 |
| 1942 | 1942-04-06 | 1942-09-19 |
| 1943 | 1943-05-06 | 1943-09-16 |
| 1944 | 1944-05-15 | 1944-10-07 |
| 1945 | 1945-03-17 | 1945-09-29 |
| 1946 | 1946-05-30 | 1946-10-31 |
| 1947 | 1947-05-13 | 1947-10-23 |
| 1948 | 1948-03-21 | 1948-09-20 |
| 1949 | 1949-05-05 | 1949-09-18 |
| 1950 | 1950-05-06 | 1950-09-10 |
| 1951 | 1951-04-26 | 1951-10-06 |
| 1952 | 1952-04-22 | 1952-09-18 |
| 1953 | 1953-05-12 | 1953-09-30 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 60 | 86 | 1930 | 60 |
| 35 C (95 F): Days | 58 | 25 | 1930 | 13 |
| 40 C (104 F): Days | 4 | 3 | 1930 | 3 |
| 90 F (32.2 C): Days | 60 | 59 | 1930 | 32 |
| 100 F (37.8 C): Days | 25 | 8 | 1925 | 1 |
| 110 F (43.3 C): Days | 1 | 1 | 1930 | 1 |
| 0 C (32 F): Ice days (max | 55 | 24 | 1902 | 1 |
| 0 C (32 F): Frost days (min | 59 | 131 | 1904 | 81 |
| -10 C (14 F): Days with min | 57 | 24 | 1904 | 4 |
| -20 C (-4 F): Days with min | 5 | 6 | 1893 | 3 |
| 20 C (68 F): Tropical nights (min | 59 | 66 | 1898 | 35 |
| 25 C (77 F): Days with min | 20 | 5 | 1901 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 53 | 63 | 1948 | 35 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 53 | 25 | 1948 | 14 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 49 | 7 | 1933 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 10 | 2 | 1933 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 5 | 3 | 1947 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.
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).