Calcutta/Alipore Threshold Days by Year (IN024140300)
10 fixed thresholds counted per year at Calcutta/Alipore (IN024140300): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Calcutta/Alipore Thresholds
- Calcutta/Alipore: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1913 with 61.
- Calcutta/Alipore: days with 25 mm (0.98 in) or more of precipitation in 71 years, most in 1939 with 32.
- Calcutta/Alipore: days with 50 mm (1.97 in) or more of precipitation in 70 years, most in 1941 with 14.
- Calcutta/Alipore: days with 100 mm (3.94 in) or more of precipitation in 41 years, most in 1922 with 5.
- 10 fixed thresholds have at least one qualifying day at Calcutta/Alipore.
Days with 10 mm (0.39 in) or more of precipitation
71 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1901 | 45 | 44.7 |
| 1902 | 47 | 44.7 |
| 1903 | 39 | 44.7 |
| 1904 | 41 | 44.7 |
| 1905 | 45 | 44.7 |
| 1906 | 46 | 44.7 |
| 1907 | 32 | 44.7 |
| 1908 | 54 | 44.7 |
| 1909 | 53 | 44.7 |
| 1910 | 44 | 46.3 |
| 1911 | 36 | 46.3 |
| 1912 | 49 | 46.3 |
| 1913 | 61 | 46.3 |
| 1914 | 39 | 46.3 |
| 1915 | 53 | 46.3 |
| 1916 | 48 | 46.3 |
| 1917 | 59 | 46.3 |
| 1918 | 33 | 46.3 |
| 1919 | 41 | 46.3 |
| 1920 | 41 | 43.7 |
| 1921 | 40 | 43.7 |
| 1922 | 46 | 43.7 |
| 1923 | 46 | 43.7 |
| 1924 | 36 | 43.7 |
| 1925 | 47 | 43.7 |
| 1926 | 53 | 43.7 |
| 1927 | 36 | 43.7 |
| 1928 | 48 | 43.7 |
| 1929 | 44 | 43.7 |
| 1930 | 45 | 47 |
| 1931 | 53 | 47 |
| 1932 | 46 | 47 |
| 1933 | 57 | 47 |
| 1934 | 48 | 47 |
| 1935 | 27 | 47 |
| 1936 | 51 | 47 |
| 1937 | 49 | 47 |
| 1938 | 37 | 47 |
| 1939 | 57 | 47 |
| 1940 | 45 | 46.4 |
| 1941 | 55 | 46.4 |
| 1942 | 47 | 46.4 |
| 1943 | 44 | 46.4 |
| 1944 | 38 | 46.4 |
| 1945 | 44 | 46.4 |
| 1946 | 46 | 46.4 |
| 1947 | 41 | 46.4 |
| 1948 | 56 | 46.4 |
| 1949 | 48 | 46.4 |
| 1950 | 46 | 43.1 |
| 1951 | 48 | 43.1 |
| 1952 | 46 | 43.1 |
| 1953 | 37 | 43.1 |
| 1954 | 36 | 43.1 |
| 1955 | 45 | 43.1 |
| 1956 | 48 | 43.1 |
| 1957 | 39 | 43.1 |
| 1958 | 31 | 43.1 |
| 1959 | 55 | 43.1 |
| 1960 | 43 | 43.4 |
| 1961 | 43 | 43.4 |
| 1962 | 39 | 43.4 |
| 1963 | 45 | 43.4 |
| 1964 | 50 | 43.4 |
| 1965 | 39 | 43.4 |
| 1966 | 35 | 43.4 |
| 1967 | 42 | 43.4 |
| 1968 | 48 | 43.4 |
| 1969 | 50 | 43.4 |
| 1970 | 54 | 54 |
| 2025 | 37 | 37 |
| Year | First date | Last date |
|---|---|---|
| 1901 | 1901-01-04 | 1901-11-27 |
| 1902 | 1902-03-13 | 1902-12-22 |
| 1903 | 1903-02-24 | 1903-10-30 |
| 1904 | 1904-02-19 | 1904-10-18 |
| 1905 | 1905-01-13 | 1905-10-25 |
| 1906 | 1906-01-22 | 1906-10-31 |
| 1907 | 1907-03-13 | 1907-12-13 |
| 1908 | 1908-01-12 | 1908-10-13 |
| 1909 | 1909-04-14 | 1909-10-18 |
| 1910 | 1910-01-09 | 1910-10-24 |
| 1911 | 1911-03-14 | 1911-10-13 |
| 1912 | 1912-02-09 | 1912-11-01 |
| 1913 | 1913-02-16 | 1913-11-19 |
| 1914 | 1914-02-19 | 1914-12-21 |
| 1915 | 1915-03-04 | 1915-11-23 |
| 1916 | 1916-04-25 | 1916-11-11 |
| 1917 | 1917-02-05 | 1917-10-31 |
| 1918 | 1918-03-18 | 1918-09-28 |
| 1919 | 1919-01-20 | 1919-11-15 |
| 1920 | 1920-02-07 | 1920-10-11 |
| 1921 | 1921-01-22 | 1921-09-23 |
| 1922 | 1922-04-09 | 1922-10-05 |
| 1923 | 1923-02-13 | 1923-11-20 |
| 1924 | 1924-02-08 | 1924-11-19 |
| 1925 | 1925-01-07 | 1925-10-16 |
| 1926 | 1926-02-05 | 1926-12-27 |
| 1927 | 1927-02-11 | 1927-10-05 |
| 1928 | 1928-04-08 | 1928-10-15 |
| 1929 | 1929-01-22 | 1929-10-20 |
| 1930 | 1930-02-11 | 1930-11-20 |
| 1931 | 1931-02-17 | 1931-11-06 |
| 1932 | 1932-03-21 | 1932-11-14 |
| 1933 | 1933-01-26 | 1933-10-22 |
| 1934 | 1934-04-12 | 1934-11-03 |
| 1935 | 1935-01-18 | 1935-10-07 |
| 1936 | 1936-01-05 | 1936-12-22 |
| 1937 | 1937-02-12 | 1937-10-26 |
| 1938 | 1938-02-16 | 1938-10-23 |
| 1939 | 1939-02-25 | 1939-10-25 |
| 1940 | 1940-03-01 | 1940-10-29 |
| 1941 | 1941-01-31 | 1941-11-20 |
| 1942 | 1942-04-07 | 1942-10-17 |
| 1943 | 1943-02-26 | 1943-10-16 |
| 1944 | 1944-01-30 | 1944-10-03 |
| 1945 | 1945-01-07 | 1945-10-23 |
| 1946 | 1946-02-28 | 1946-11-21 |
| 1947 | 1947-03-21 | 1947-12-23 |
| 1948 | 1948-01-06 | 1948-11-29 |
| 1949 | 1949-03-19 | 1949-10-28 |
| 1950 | 1950-04-14 | 1950-11-19 |
| 1951 | 1951-03-23 | 1951-11-26 |
| 1952 | 1952-03-18 | 1952-10-13 |
| 1953 | 1953-01-23 | 1953-10-14 |
| 1954 | 1954-01-21 | 1954-12-29 |
| 1955 | 1955-04-09 | 1955-11-09 |
| 1956 | 1956-03-10 | 1956-10-31 |
| 1957 | 1957-01-11 | 1957-10-24 |
| 1958 | 1958-02-24 | 1958-11-03 |
| 1959 | 1959-01-30 | 1959-10-30 |
| 1960 | 1960-03-01 | 1960-10-10 |
| 1961 | 1961-01-22 | 1961-10-03 |
| 1962 | 1962-01-28 | 1962-10-31 |
| 1963 | 1963-03-12 | 1963-10-25 |
| 1964 | 1964-03-21 | 1964-11-16 |
| 1965 | 1965-02-21 | 1965-10-22 |
| 1966 | 1966-01-04 | 1966-12-10 |
| 1967 | 1967-03-10 | 1967-10-11 |
| 1968 | 1968-02-16 | 1968-11-15 |
| 1969 | 1969-01-14 | 1969-11-13 |
| 1970 | 1970-03-04 | 1970-11-13 |
| 2025 | 2025-04-29 | 2025-08-23 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 1 | 0 | n/a | 4 |
| 35 C (95 F): Days | 1 | 0 | n/a | 4 |
| 90 F (32.2 C): Days | 1 | 0 | n/a | 4 |
| 20 C (68 F): Tropical nights (min | 1 | 0 | n/a | 155 |
| 25 C (77 F): Days with min | 1 | 0 | n/a | 113 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 71 | 61 | 1913 | 37 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 71 | 32 | 1939 | 18 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 70 | 14 | 1941 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 41 | 5 | 1922 | 3 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 4 | 1 | 1907 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2025.
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).