Dennison Wtr Wks Threshold Days by Year (USC00332156)
17 fixed thresholds counted per year at Dennison Wtr Wks (USC00332156): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Dennison Wtr Wks Thresholds
- Dennison Wtr Wks: days with a maximum temperature at or above 30 C (86 F) in 54 years, most in 1911 with 96.
- Dennison Wtr Wks: days with a maximum temperature at or above 90 F (32.2 C) in 54 years, most in 1911 with 56.
- Dennison Wtr Wks: days with a maximum temperature at or below 0 C (32 F) in 54 years, most in 1978 with 52.
- Dennison Wtr Wks: nights with a minimum temperature at or below 0 C (32 F) in 50 years, most in 1981 with 152.
- 17 fixed thresholds have at least one qualifying day at Dennison Wtr Wks.
Days at or above 30 C (86 F)
54 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1910 | 75 | 57.8 |
| 1911 | 96 | 57.8 |
| 1912 | 43 | 57.8 |
| 1913 | 56 | 57.8 |
| 1914 | 71 | 57.8 |
| 1915 | 40 | 57.8 |
| 1916 | 48 | 57.8 |
| 1917 | 34 | 57.8 |
| 1918 | 56 | 57.8 |
| 1919 | 59 | 57.8 |
| 1920 | 35 | 49.8 |
| 1921 | 74 | 49.8 |
| 1922 | 54 | 49.8 |
| 1923 | 55 | 49.8 |
| 1924 | 39 | 49.8 |
| 1925 | 66 | 49.8 |
| 1926 | 37 | 49.8 |
| 1927 | 36 | 49.8 |
| 1928 | 44 | 49.8 |
| 1929 | 58 | 49.8 |
| 1930 | 84 | 66.8 |
| 1931 | 78 | 66.8 |
| 1932 | 68 | 66.8 |
| 1933 | 60 | 66.8 |
| 1934 | 78 | 66.8 |
| 1935 | 54 | 66.8 |
| 1936 | 79 | 66.8 |
| 1937 | 54 | 66.8 |
| 1938 | 56 | 66.8 |
| 1939 | 57 | 66.8 |
| 1940 | 30 | 54 |
| 1941 | 48 | 54 |
| 1942 | 63 | 54 |
| 1943 | 54 | 54 |
| 1944 | 67 | 54 |
| 1945 | 55 | 54 |
| 1948 | 54 | 54 |
| 1949 | 61 | 54 |
| 1950 | 25 | 39 |
| 1951 | 37 | 39 |
| 1952 | 56 | 39 |
| 1953 | 59 | 39 |
| 1954 | 46 | 39 |
| 1955 | 63 | 39 |
| 1956 | 18 | 39 |
| 1957 | 31 | 39 |
| 1958 | 16 | 39 |
| 1974 | 20 | 25.2 |
| 1976 | 10 | 25.2 |
| 1977 | 39 | 25.2 |
| 1978 | 28 | 25.2 |
| 1979 | 29 | 25.2 |
| 1980 | 37 | 29.5 |
| 1981 | 22 | 29.5 |
| Year | First date | Last date |
|---|---|---|
| 1910 | 1910-06-15 | 1910-10-20 |
| 1911 | 1911-05-10 | 1911-09-24 |
| 1912 | 1912-05-22 | 1912-09-10 |
| 1913 | 1913-04-25 | 1913-09-06 |
| 1914 | 1914-04-28 | 1914-09-23 |
| 1915 | 1915-04-24 | 1915-09-17 |
| 1916 | 1916-05-26 | 1916-10-08 |
| 1917 | 1917-05-19 | 1917-08-28 |
| 1918 | 1918-05-25 | 1918-08-29 |
| 1919 | 1919-05-29 | 1919-10-05 |
| 1920 | 1920-05-27 | 1920-09-27 |
| 1921 | 1921-04-26 | 1921-09-17 |
| 1922 | 1922-05-23 | 1922-10-07 |
| 1923 | 1923-05-28 | 1923-09-27 |
| 1924 | 1924-05-06 | 1924-09-02 |
| 1925 | 1925-04-23 | 1925-09-21 |
| 1926 | 1926-05-02 | 1926-09-22 |
| 1927 | 1927-05-09 | 1927-10-03 |
| 1928 | 1928-05-04 | 1928-10-12 |
| 1929 | 1929-05-27 | 1929-09-29 |
| 1930 | 1930-04-11 | 1930-09-26 |
| 1931 | 1931-05-18 | 1931-09-22 |
| 1932 | 1932-05-07 | 1932-09-20 |
| 1933 | 1933-05-23 | 1933-09-09 |
| 1934 | 1934-05-19 | 1934-09-26 |
| 1935 | 1935-05-28 | 1935-09-25 |
| 1936 | 1936-05-07 | 1936-09-24 |
| 1937 | 1937-05-22 | 1937-09-04 |
| 1938 | 1938-04-27 | 1938-10-18 |
| 1939 | 1939-05-06 | 1939-10-10 |
| 1940 | 1940-05-06 | 1940-08-18 |
| 1941 | 1941-04-19 | 1941-10-07 |
| 1942 | 1942-04-25 | 1942-09-18 |
| 1943 | 1943-05-06 | 1943-09-06 |
| 1944 | 1944-05-15 | 1944-09-19 |
| 1945 | 1945-05-21 | 1945-09-28 |
| 1948 | 1948-04-24 | 1948-09-17 |
| 1949 | 1949-05-04 | 1949-10-10 |
| 1950 | 1950-05-05 | 1950-09-10 |
| 1951 | 1951-05-01 | 1951-10-05 |
| 1952 | 1952-05-05 | 1952-10-01 |
| 1953 | 1953-05-10 | 1953-10-03 |
| 1954 | 1954-04-21 | 1954-10-02 |
| 1955 | 1955-05-04 | 1955-09-19 |
| 1956 | 1956-06-10 | 1956-08-31 |
| 1957 | 1957-04-27 | 1957-09-03 |
| 1958 | 1958-06-05 | 1958-09-06 |
| 1974 | 1974-05-14 | 1974-08-27 |
| 1976 | 1976-04-18 | 1976-08-25 |
| 1977 | 1977-05-17 | 1977-09-05 |
| 1978 | 1978-05-26 | 1978-09-21 |
| 1979 | 1979-05-08 | 1979-09-11 |
| 1980 | 1980-05-29 | 1980-09-13 |
| 1981 | 1981-06-14 | 1981-09-01 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 54 | 96 | 1911 | 22 |
| 35 C (95 F): Days | 34 | 26 | 1931 | 2 |
| 40 C (104 F): Days | 3 | 2 | 1911 | 1 |
| 90 F (32.2 C): Days | 54 | 56 | 1911 | 5 |
| 100 F (37.8 C): Days | 11 | 7 | 1911 | 1 |
| 0 C (32 F): Ice days (max | 54 | 52 | 1978 | 33 |
| 0 C (32 F): Frost days (min | 50 | 152 | 1981 | 152 |
| -10 C (14 F): Days with min | 50 | 50 | 1977 | 33 |
| -20 C (-4 F): Days with min | 35 | 23 | 1977 | 10 |
| -30 C (-22 F): Days with min | 2 | 3 | 1918 | 1 |
| 20 C (68 F): Tropical nights (min | 50 | 28 | 1949 | 3 |
| 25 C (77 F): Days with min | 1 | 1 | 1936 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 44 | 50 | 1951 | 35 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 44 | 14 | 1980 | 11 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 25 | 3 | 1935 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 20 | 5 | 1936 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 1 | 1944 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.
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).