Waterville Wwtp Threshold Days by Year (USC00179826)
17 fixed thresholds counted per year at Waterville Wwtp (USC00179826): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Waterville Wwtp Thresholds
- Waterville Wwtp: nights with a minimum temperature at or below 0 C (32 F) in 58 years, most in 1907 with 194.
- Waterville Wwtp: nights with a minimum temperature at or below -10 C (14 F) in 58 years, most in 1904 with 96.
- Waterville Wwtp: nights with a minimum temperature at or below -20 C (-4 F) in 57 years, most in 1904 with 34.
- Waterville Wwtp: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1936 with 44.
- 17 fixed thresholds have at least one qualifying day at Waterville Wwtp.
Days at or above 30 C (86 F)
54 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1897 | 14 | 15 |
| 1898 | 16 | 15 |
| 1901 | 27 | 15 |
| 1902 | 9 | 15 |
| 1903 | 6 | 15 |
| 1904 | 9 | 15 |
| 1905 | 15 | 15 |
| 1906 | 19 | 15 |
| 1907 | 13 | 15 |
| 1909 | 22 | 15 |
| 1910 | 17 | 22.2 |
| 1911 | 31 | 22.2 |
| 1912 | 17 | 22.2 |
| 1913 | 20 | 22.2 |
| 1914 | 22 | 22.2 |
| 1915 | 14 | 22.2 |
| 1916 | 26 | 22.2 |
| 1917 | 25 | 22.2 |
| 1918 | 29 | 22.2 |
| 1919 | 21 | 22.2 |
| 1920 | 28 | 19.9 |
| 1921 | 37 | 19.9 |
| 1922 | 15 | 19.9 |
| 1923 | 14 | 19.9 |
| 1924 | 20 | 19.9 |
| 1925 | 19 | 19.9 |
| 1926 | 10 | 19.9 |
| 1927 | 11 | 19.9 |
| 1928 | 21 | 19.9 |
| 1929 | 24 | 19.9 |
| 1930 | 25 | 23 |
| 1931 | 19 | 23 |
| 1933 | 11 | 23 |
| 1934 | 17 | 23 |
| 1935 | 28 | 23 |
| 1936 | 15 | 23 |
| 1937 | 52 | 23 |
| 1938 | 17 | 23 |
| 1940 | 28 | 27.5 |
| 1941 | 40 | 27.5 |
| 1942 | 19 | 27.5 |
| 1943 | 17 | 27.5 |
| 1944 | 30 | 27.5 |
| 1945 | 30 | 27.5 |
| 1948 | 26 | 27.5 |
| 1949 | 30 | 27.5 |
| 1950 | 11 | 17.4 |
| 1951 | 18 | 17.4 |
| 1952 | 29 | 17.4 |
| 1953 | 18 | 17.4 |
| 1954 | 3 | 17.4 |
| 1955 | 35 | 17.4 |
| 1956 | 8 | 17.4 |
| 1957 | 17 | 17.4 |
| Year | First date | Last date |
|---|---|---|
| 1897 | 1897-06-24 | 1897-09-10 |
| 1898 | 1898-06-25 | 1898-09-07 |
| 1901 | 1901-05-22 | 1901-09-08 |
| 1902 | 1902-05-23 | 1902-09-02 |
| 1903 | 1903-05-18 | 1903-09-15 |
| 1904 | 1904-07-10 | 1904-08-01 |
| 1905 | 1905-06-16 | 1905-09-11 |
| 1906 | 1906-06-27 | 1906-09-21 |
| 1907 | 1907-06-17 | 1907-08-13 |
| 1909 | 1909-06-22 | 1909-10-09 |
| 1910 | 1910-06-21 | 1910-08-21 |
| 1911 | 1911-05-12 | 1911-08-23 |
| 1912 | 1912-06-02 | 1912-08-14 |
| 1913 | 1913-04-25 | 1913-09-03 |
| 1914 | 1914-05-26 | 1914-09-23 |
| 1915 | 1915-06-16 | 1915-09-17 |
| 1916 | 1916-07-02 | 1916-09-14 |
| 1917 | 1917-07-01 | 1917-08-15 |
| 1918 | 1918-05-17 | 1918-08-26 |
| 1919 | 1919-06-03 | 1919-07-29 |
| 1920 | 1920-06-01 | 1920-09-27 |
| 1921 | 1921-05-21 | 1921-09-04 |
| 1922 | 1922-05-29 | 1922-08-17 |
| 1923 | 1923-06-19 | 1923-08-06 |
| 1924 | 1924-06-23 | 1924-09-02 |
| 1925 | 1925-06-03 | 1925-09-13 |
| 1926 | 1926-06-27 | 1926-08-11 |
| 1927 | 1927-04-19 | 1927-07-29 |
| 1928 | 1928-06-14 | 1928-08-30 |
| 1929 | 1929-05-28 | 1929-09-04 |
| 1930 | 1930-05-02 | 1930-10-13 |
| 1931 | 1931-05-20 | 1931-09-14 |
| 1933 | 1933-06-08 | 1933-09-02 |
| 1934 | 1934-06-05 | 1934-08-20 |
| 1935 | 1935-07-01 | 1935-08-18 |
| 1936 | 1936-05-18 | 1936-09-08 |
| 1937 | 1937-05-30 | 1937-09-06 |
| 1938 | 1938-06-20 | 1938-08-21 |
| 1940 | 1940-05-27 | 1940-08-19 |
| 1941 | 1941-05-07 | 1941-09-23 |
| 1942 | 1942-06-10 | 1942-09-18 |
| 1943 | 1943-06-23 | 1943-08-03 |
| 1944 | 1944-05-04 | 1944-08-17 |
| 1945 | 1945-04-12 | 1945-09-08 |
| 1948 | 1948-06-05 | 1948-09-14 |
| 1949 | 1949-06-14 | 1949-08-29 |
| 1950 | 1950-05-27 | 1950-08-19 |
| 1951 | 1951-05-17 | 1951-09-14 |
| 1952 | 1952-06-16 | 1952-09-03 |
| 1953 | 1953-05-11 | 1953-09-06 |
| 1954 | 1954-06-22 | 1954-08-26 |
| 1955 | 1955-06-19 | 1955-09-19 |
| 1956 | 1956-06-02 | 1956-08-19 |
| 1957 | 1957-05-09 | 1957-09-23 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 54 | 52 | 1937 | 17 |
| 35 C (95 F): Days | 23 | 9 | 1944 | 1 |
| 90 F (32.2 C): Days | 54 | 33 | 1937 | 7 |
| 100 F (37.8 C): Days | 1 | 1 | 1911 | 1 |
| 0 C (32 F): Ice days (max | 54 | 95 | 1904 | 48 |
| 0 C (32 F): Frost days (min | 58 | 194 | 1907 | 154 |
| -10 C (14 F): Days with min | 58 | 96 | 1904 | 56 |
| -20 C (-4 F): Days with min | 57 | 34 | 1904 | 14 |
| -30 C (-22 F): Days with min | 29 | 7 | 1934 | 4 |
| 20 C (68 F): Tropical nights (min | 37 | 10 | 1955 | 10 |
| 25 C (77 F): Days with min | 1 | 1 | 1949 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 57 | 44 | 1936 | 29 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 57 | 16 | 1920 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 36 | 4 | 1922 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 6 | 1 | 1915 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 12 | 11 | 1954 | 5 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 6 | 1 | 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 1897.
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).