Waterbury Threshold Days by Year (USC00068906)
18 fixed thresholds counted per year at Waterbury (USC00068906): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Waterbury Thresholds
- Waterbury: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1904 with 167.
- Waterbury: nights with a minimum temperature at or below -10 C (14 F) in 59 years, most in 1904 with 57.
- Waterbury: nights with a minimum temperature at or above 20 C (68 F) in 59 years, most in 1901 with 28.
- Waterbury: days with a maximum temperature at or above 30 C (86 F) in 56 years, most in 1944 with 72.
- 18 fixed thresholds have at least one qualifying day at Waterbury.
Days at or above 30 C (86 F)
56 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1893 | 17 | 24 |
| 1894 | 21 | 24 |
| 1895 | 15 | 24 |
| 1896 | 24 | 24 |
| 1897 | 8 | 24 |
| 1898 | 43 | 24 |
| 1899 | 40 | 24 |
| 1900 | 60 | 35.3 |
| 1901 | 38 | 35.3 |
| 1902 | 22 | 35.3 |
| 1903 | 27 | 35.3 |
| 1904 | 24 | 35.3 |
| 1905 | 26 | 35.3 |
| 1906 | 43 | 35.3 |
| 1907 | 29 | 35.3 |
| 1908 | 48 | 35.3 |
| 1909 | 36 | 35.3 |
| 1910 | 28 | 32 |
| 1911 | 34 | 32 |
| 1912 | 33 | 32 |
| 1913 | 38 | 32 |
| 1914 | 32 | 32 |
| 1915 | 29 | 32 |
| 1916 | 26 | 32 |
| 1917 | 25 | 32 |
| 1919 | 43 | 32 |
| 1920 | 60 | 42.3 |
| 1924 | 29 | 42.3 |
| 1925 | 50 | 42.3 |
| 1926 | 38 | 42.3 |
| 1927 | 25 | 42.3 |
| 1928 | 34 | 42.3 |
| 1929 | 60 | 42.3 |
| 1930 | 54 | 55.2 |
| 1931 | 51 | 55.2 |
| 1932 | 61 | 55.2 |
| 1933 | 53 | 55.2 |
| 1934 | 55 | 55.2 |
| 1935 | 56 | 55.2 |
| 1936 | 62 | 55.2 |
| 1937 | 57 | 55.2 |
| 1938 | 49 | 55.2 |
| 1939 | 54 | 55.2 |
| 1940 | 36 | 47.8 |
| 1941 | 48 | 47.8 |
| 1942 | 35 | 47.8 |
| 1944 | 72 | 47.8 |
| 1945 | 40 | 47.8 |
| 1946 | 40 | 47.8 |
| 1947 | 48 | 47.8 |
| 1948 | 55 | 47.8 |
| 1949 | 56 | 47.8 |
| 1950 | 36 | 44.3 |
| 1951 | 40 | 44.3 |
| 1952 | 51 | 44.3 |
| 1953 | 50 | 44.3 |
| Year | First date | Last date |
|---|---|---|
| 1893 | 1893-06-05 | 1893-08-26 |
| 1894 | 1894-06-11 | 1894-09-10 |
| 1895 | 1895-05-09 | 1895-09-23 |
| 1896 | 1896-04-16 | 1896-09-11 |
| 1897 | 1897-06-25 | 1897-09-11 |
| 1898 | 1898-06-08 | 1898-10-02 |
| 1899 | 1899-05-02 | 1899-09-01 |
| 1900 | 1900-05-14 | 1900-09-12 |
| 1901 | 1901-06-06 | 1901-09-07 |
| 1902 | 1902-05-23 | 1902-09-02 |
| 1903 | 1903-05-18 | 1903-09-15 |
| 1904 | 1904-05-24 | 1904-09-12 |
| 1905 | 1905-06-14 | 1905-09-30 |
| 1906 | 1906-05-16 | 1906-09-21 |
| 1907 | 1907-05-14 | 1907-09-21 |
| 1908 | 1908-05-24 | 1908-10-18 |
| 1909 | 1909-05-06 | 1909-09-14 |
| 1910 | 1910-06-14 | 1910-07-29 |
| 1911 | 1911-05-18 | 1911-09-06 |
| 1912 | 1912-05-21 | 1912-10-06 |
| 1913 | 1913-05-02 | 1913-09-04 |
| 1914 | 1914-05-20 | 1914-09-24 |
| 1915 | 1915-04-25 | 1915-09-17 |
| 1916 | 1916-07-07 | 1916-09-14 |
| 1917 | 1917-06-22 | 1917-08-30 |
| 1919 | 1919-05-05 | 1919-09-19 |
| 1920 | 1920-05-29 | 1920-10-21 |
| 1924 | 1924-06-17 | 1924-09-02 |
| 1925 | 1925-05-23 | 1925-09-13 |
| 1926 | 1926-06-02 | 1926-09-25 |
| 1927 | 1927-04-20 | 1927-10-02 |
| 1928 | 1928-06-14 | 1928-10-12 |
| 1929 | 1929-05-28 | 1929-09-29 |
| 1930 | 1930-05-02 | 1930-10-13 |
| 1931 | 1931-05-28 | 1931-10-03 |
| 1932 | 1932-05-16 | 1932-10-09 |
| 1933 | 1933-05-20 | 1933-09-27 |
| 1934 | 1934-05-05 | 1934-09-26 |
| 1935 | 1935-04-27 | 1935-09-12 |
| 1936 | 1936-05-01 | 1936-09-12 |
| 1937 | 1937-05-30 | 1937-09-24 |
| 1938 | 1938-04-20 | 1938-10-17 |
| 1939 | 1939-04-25 | 1939-10-10 |
| 1940 | 1940-06-03 | 1940-09-21 |
| 1941 | 1941-04-15 | 1941-10-06 |
| 1942 | 1942-04-30 | 1942-09-17 |
| 1944 | 1944-05-04 | 1944-10-07 |
| 1945 | 1945-03-28 | 1945-09-29 |
| 1946 | 1946-05-26 | 1946-10-07 |
| 1947 | 1947-05-13 | 1947-10-17 |
| 1948 | 1948-05-10 | 1948-09-29 |
| 1949 | 1949-05-04 | 1949-10-11 |
| 1950 | 1950-06-06 | 1950-10-01 |
| 1951 | 1951-05-15 | 1951-09-21 |
| 1952 | 1952-06-09 | 1952-09-29 |
| 1953 | 1953-05-10 | 1953-09-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 56 | 72 | 1944 | 50 |
| 35 C (95 F): Days | 48 | 16 | 1944 | 14 |
| 40 C (104 F): Days | 2 | 1 | 1926 | 1 |
| 90 F (32.2 C): Days | 56 | 41 | 1944 | 30 |
| 100 F (37.8 C): Days | 18 | 5 | 1944 | 3 |
| 0 C (32 F): Ice days (max | 56 | 56 | 1904 | 11 |
| 0 C (32 F): Frost days (min | 59 | 167 | 1904 | 98 |
| -10 C (14 F): Days with min | 59 | 57 | 1904 | 5 |
| -20 C (-4 F): Days with min | 37 | 11 | 1914 | 1 |
| -30 C (-22 F): Days with min | 1 | 0 | n/a | 1 |
| 20 C (68 F): Tropical nights (min | 59 | 28 | 1901 | 21 |
| 25 C (77 F): Days with min | 10 | 8 | 1901 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 54 | 51 | 1942 | 44 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 54 | 20 | 1901 | 20 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 48 | 12 | 1901 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 10 | 2 | 1897 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 8 | 10 | 1945 | 5 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 4 | 2 | 1945 | 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).