Tres Piedras Threshold Days by Year (USC00299085)
13 fixed thresholds counted per year at Tres Piedras (USC00299085): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Tres Piedras Thresholds
- Tres Piedras: days with 10 mm (0.39 in) or more of precipitation in 78 years, most in 1990 with 26.
- Tres Piedras: days with 10 cm (3.9 in) or more of snowfall in 63 years, most in 1936 with 11.
- Tres Piedras: days with a maximum temperature at or below 0 C (32 F) in 55 years, most in 1919 with 55.
- Tres Piedras: nights with a minimum temperature at or below 0 C (32 F) in 54 years, most in 1909 with 243.
- 13 fixed thresholds have at least one qualifying day at Tres Piedras.
Days at or above 30 C (86 F)
50 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1906 | 5 | 11.3 |
| 1907 | 1 | 11.3 |
| 1908 | 21 | 11.3 |
| 1909 | 18 | 11.3 |
| 1910 | 21 | 8 |
| 1913 | 12 | 8 |
| 1914 | 2 | 8 |
| 1916 | 4 | 8 |
| 1918 | 7 | 8 |
| 1919 | 2 | 8 |
| 1920 | 3 | 2.9 |
| 1922 | 6 | 2.9 |
| 1923 | 1 | 2.9 |
| 1924 | 2 | 2.9 |
| 1925 | 4 | 2.9 |
| 1926 | 3 | 2.9 |
| 1928 | 1 | 2.9 |
| 1929 | 3 | 2.9 |
| 1931 | 15 | 9.9 |
| 1932 | 1 | 9.9 |
| 1934 | 9 | 9.9 |
| 1935 | 2 | 9.9 |
| 1936 | 20 | 9.9 |
| 1937 | 11 | 9.9 |
| 1938 | 6 | 9.9 |
| 1939 | 15 | 9.9 |
| 1940 | 15 | 11.7 |
| 1942 | 2 | 11.7 |
| 1943 | 7 | 11.7 |
| 1944 | 10 | 11.7 |
| 1945 | 7 | 11.7 |
| 1947 | 22 | 11.7 |
| 1948 | 19 | 11.7 |
| 1952 | 7 | 10.8 |
| 1953 | 19 | 10.8 |
| 1954 | 15 | 10.8 |
| 1955 | 4 | 10.8 |
| 1956 | 11 | 10.8 |
| 1957 | 9 | 10.8 |
| 1961 | 5 | 11.5 |
| 1963 | 18 | 11.5 |
| 1973 | 7 | 11 |
| 1974 | 12 | 11 |
| 1979 | 14 | 11 |
| 1980 | 32 | 16.3 |
| 1981 | 7 | 16.3 |
| 1989 | 10 | 16.3 |
| 1990 | 13 | 11.3 |
| 1991 | 2 | 11.3 |
| 1992 | 19 | 11.3 |
| Year | First date | Last date |
|---|---|---|
| 1906 | 1906-06-10 | 1906-07-02 |
| 1907 | 1907-07-06 | 1907-07-06 |
| 1908 | 1908-06-15 | 1908-09-10 |
| 1909 | 1909-06-17 | 1909-08-17 |
| 1910 | 1910-05-29 | 1910-09-09 |
| 1913 | 1913-07-02 | 1913-08-20 |
| 1914 | 1914-06-25 | 1914-06-29 |
| 1916 | 1916-06-26 | 1916-07-04 |
| 1918 | 1918-06-10 | 1918-08-04 |
| 1919 | 1919-06-29 | 1919-07-08 |
| 1920 | 1920-07-03 | 1920-07-12 |
| 1922 | 1922-06-22 | 1922-08-24 |
| 1923 | 1923-07-30 | 1923-07-30 |
| 1924 | 1924-07-14 | 1924-09-04 |
| 1925 | 1925-07-14 | 1925-07-19 |
| 1926 | 1926-07-18 | 1926-07-29 |
| 1928 | 1928-07-27 | 1928-07-27 |
| 1929 | 1929-06-27 | 1929-07-17 |
| 1931 | 1931-06-21 | 1931-08-25 |
| 1932 | 1932-07-07 | 1932-07-07 |
| 1934 | 1934-07-03 | 1934-08-02 |
| 1935 | 1935-07-11 | 1935-07-27 |
| 1936 | 1936-06-17 | 1936-08-25 |
| 1937 | 1937-06-20 | 1937-08-12 |
| 1938 | 1938-07-29 | 1938-08-03 |
| 1939 | 1939-06-01 | 1939-08-30 |
| 1940 | 1940-06-18 | 1940-08-14 |
| 1942 | 1942-07-11 | 1942-07-12 |
| 1943 | 1943-06-24 | 1943-07-30 |
| 1944 | 1944-07-30 | 1944-08-15 |
| 1945 | 1945-07-18 | 1945-09-06 |
| 1947 | 1947-07-02 | 1947-08-13 |
| 1948 | 1948-06-13 | 1948-09-06 |
| 1952 | 1952-07-21 | 1952-09-05 |
| 1953 | 1953-06-22 | 1953-09-20 |
| 1954 | 1954-06-18 | 1954-10-07 |
| 1955 | 1955-06-20 | 1955-07-30 |
| 1956 | 1956-05-30 | 1956-09-01 |
| 1957 | 1957-06-28 | 1957-08-04 |
| 1961 | 1961-06-22 | 1961-08-07 |
| 1963 | 1963-06-23 | 1963-08-02 |
| 1973 | 1973-06-26 | 1973-07-06 |
| 1974 | 1974-06-19 | 1974-07-03 |
| 1979 | 1979-07-09 | 1979-08-06 |
| 1980 | 1980-06-10 | 1980-08-17 |
| 1981 | 1981-06-10 | 1981-07-27 |
| 1989 | 1989-07-02 | 1989-07-19 |
| 1990 | 1990-06-04 | 1990-07-03 |
| 1991 | 1991-06-27 | 1991-07-06 |
| 1992 | 1992-07-04 | 1992-09-28 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 50 | 32 | 1980 | 19 |
| 90 F (32.2 C): Days | 18 | 14 | 1980 | 1 |
| 0 C (32 F): Ice days (max | 55 | 55 | 1919 | 32 |
| 0 C (32 F): Frost days (min | 54 | 243 | 1909 | 204 |
| -10 C (14 F): Days with min | 54 | 116 | 1952 | 97 |
| -20 C (-4 F): Days with min | 52 | 33 | 1952 | 18 |
| -30 C (-22 F): Days with min | 13 | 4 | 1955 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 78 | 26 | 1990 | 15 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 53 | 5 | 1931 | 5 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 9 | 1 | 1926 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 63 | 11 | 1936 | 6 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 26 | 3 | 1924 | 3 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1924 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1906.
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).