Watson Threshold Days by Year (ASN00018148)
3 fixed thresholds counted per year at Watson (ASN00018148): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Watson Thresholds
- Watson: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1966 with 9.
- Watson: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1919 with 2.
- Watson: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1928 with 1.
- 3 fixed thresholds have at least one qualifying day at Watson.
Days with 10 mm (0.39 in) or more of precipitation
48 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1918 | 3 | 3.5 |
| 1919 | 4 | 3.5 |
| 1920 | 7 | 3.6 |
| 1921 | 4 | 3.6 |
| 1922 | 3 | 3.6 |
| 1923 | 2 | 3.6 |
| 1924 | 4 | 3.6 |
| 1925 | 6 | 3.6 |
| 1926 | 3 | 3.6 |
| 1927 | 4 | 3.6 |
| 1928 | 1 | 3.6 |
| 1929 | 2 | 3.6 |
| 1930 | 5 | 4.4 |
| 1931 | 4 | 4.4 |
| 1932 | 5 | 4.4 |
| 1933 | 7 | 4.4 |
| 1934 | 3 | 4.4 |
| 1935 | 5 | 4.4 |
| 1936 | 3 | 4.4 |
| 1937 | 2 | 4.4 |
| 1938 | 7 | 4.4 |
| 1939 | 3 | 4.4 |
| 1940 | 5 | 4.7 |
| 1941 | 6 | 4.7 |
| 1942 | 7 | 4.7 |
| 1943 | 3 | 4.7 |
| 1944 | 1 | 4.7 |
| 1945 | 8 | 4.7 |
| 1946 | 3 | 4.7 |
| 1947 | 5 | 4.7 |
| 1948 | 3 | 4.7 |
| 1949 | 6 | 4.7 |
| 1950 | 3 | 3 |
| 1951 | 1 | 3 |
| 1952 | 2 | 3 |
| 1953 | 3 | 3 |
| 1954 | 1 | 3 |
| 1955 | 6 | 3 |
| 1956 | 2 | 3 |
| 1957 | 2 | 3 |
| 1958 | 6 | 3 |
| 1959 | 4 | 3 |
| 1960 | 3 | 4.2 |
| 1961 | 1 | 4.2 |
| 1962 | 6 | 4.2 |
| 1963 | 1 | 4.2 |
| 1964 | 5 | 4.2 |
| 1966 | 9 | 4.2 |
| Year | First date | Last date |
|---|---|---|
| 1918 | 1918-06-19 | 1918-12-01 |
| 1919 | 1919-02-02 | 1919-12-23 |
| 1920 | 1920-04-10 | 1920-12-28 |
| 1921 | 1921-02-28 | 1921-05-22 |
| 1922 | 1922-04-21 | 1922-12-17 |
| 1923 | 1923-06-21 | 1923-12-14 |
| 1924 | 1924-01-31 | 1924-12-13 |
| 1925 | 1925-01-10 | 1925-11-17 |
| 1926 | 1926-08-28 | 1926-12-17 |
| 1927 | 1927-02-25 | 1927-05-09 |
| 1928 | 1928-10-13 | 1928-10-13 |
| 1929 | 1929-06-03 | 1929-08-13 |
| 1930 | 1930-05-07 | 1930-12-04 |
| 1931 | 1931-03-31 | 1931-11-07 |
| 1932 | 1932-02-05 | 1932-12-20 |
| 1933 | 1933-03-04 | 1933-11-28 |
| 1934 | 1934-02-14 | 1934-11-07 |
| 1935 | 1935-03-21 | 1935-11-10 |
| 1936 | 1936-05-26 | 1936-10-23 |
| 1937 | 1937-11-28 | 1937-11-29 |
| 1938 | 1938-01-18 | 1938-12-27 |
| 1939 | 1939-03-11 | 1939-07-30 |
| 1940 | 1940-01-25 | 1940-04-06 |
| 1941 | 1941-02-27 | 1941-11-29 |
| 1942 | 1942-01-30 | 1942-12-23 |
| 1943 | 1943-02-16 | 1943-04-22 |
| 1944 | 1944-04-08 | 1944-04-08 |
| 1945 | 1945-01-09 | 1945-12-26 |
| 1946 | 1946-03-15 | 1946-12-24 |
| 1947 | 1947-01-21 | 1947-10-19 |
| 1948 | 1948-04-04 | 1948-12-23 |
| 1949 | 1949-02-03 | 1949-05-30 |
| 1950 | 1950-05-12 | 1950-12-19 |
| 1951 | 1951-07-31 | 1951-07-31 |
| 1952 | 1952-01-06 | 1952-11-25 |
| 1953 | 1953-02-04 | 1953-12-23 |
| 1954 | 1954-04-14 | 1954-04-14 |
| 1955 | 1955-02-14 | 1955-11-24 |
| 1956 | 1956-05-09 | 1956-10-06 |
| 1957 | 1957-06-18 | 1957-12-24 |
| 1958 | 1958-03-04 | 1958-11-27 |
| 1959 | 1959-02-13 | 1959-11-25 |
| 1960 | 1960-01-15 | 1960-06-14 |
| 1961 | 1961-12-12 | 1961-12-12 |
| 1962 | 1962-03-23 | 1962-10-18 |
| 1963 | 1963-05-28 | 1963-05-28 |
| 1964 | 1964-04-29 | 1964-11-18 |
| 1966 | 1966-02-15 | 1966-12-04 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 10 mm (0.39 in): Days with 10 mm or more rain | 48 | 9 | 1966 | 9 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 18 | 2 | 1919 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 3 | 1 | 1928 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.
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).