Patan Threshold Days by Year (IN004091400)

5 fixed thresholds counted per year at Patan (IN004091400): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Patan Thresholds

Patan: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1961 with 49.
Patan: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1943 with 32.
Patan: days with 50 mm (1.97 in) or more of precipitation in 63 years, most in 1942 with 15.
Patan: days with 100 mm (3.94 in) or more of precipitation in 39 years, most in 1920 with 3.
5 fixed thresholds have at least one qualifying day at Patan.

Days with 10 mm (0.39 in) or more of precipitation

63 years with a qualifying day

Days per year at Patan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1961.

Days with 10 mm (0.39 in) or more of precipitation per year at Patan
Year	Days	Decade average
1905	42	32.6
1906	33	32.6
1907	34	32.6
1908	18	32.6
1909	36	32.6
1911	34	32.2
1912	25	32.2
1913	38	32.2
1914	31	32.2
1915	25	32.2
1916	29	32.2
1917	33	32.2
1918	33	32.2
1919	42	32.2
1920	27	33.6
1921	31	33.6
1922	36	33.6
1923	41	33.6
1924	33	33.6
1925	35	33.6
1926	32	33.6
1927	32	33.6
1928	37	33.6
1929	32	33.6
1930	37	36.2
1931	39	36.2
1932	30	36.2
1933	44	36.2
1934	32	36.2
1935	36	36.2
1936	36	36.2
1937	35	36.2
1938	34	36.2
1939	39	36.2
1940	37	41
1941	36	41
1942	47	41
1943	48	41
1944	45	41
1945	37	41
1946	43	41
1947	33	41
1948	43	41
1950	42	36.1
1951	31	36.1
1952	41	36.1
1953	35	36.1
1954	34	36.1
1955	32	36.1
1956	40	36.1
1957	36	36.1
1958	34	36.1
1959	36	36.1
1960	41	33.4
1961	49	33.4
1962	31	33.4
1963	27	33.4
1964	39	33.4
1965	25	33.4
1967	35	33.4
1968	26	33.4
1969	28	33.4
1970	30	30

For each year, a bar from the first to the last day at Patan meeting 10 mm (0.39 in).

First to last qualifying date each year at Patan
Year	First date	Last date
1905	1905-01-19	1905-10-24
1906	1906-01-25	1906-10-30
1907	1907-02-05	1907-09-06
1908	1908-01-12	1908-09-29
1909	1909-01-21	1909-10-01
1911	1911-03-14	1911-11-25
1912	1912-06-10	1912-09-06
1913	1913-02-13	1913-12-13
1914	1914-02-18	1914-12-14
1915	1915-02-05	1915-11-19
1916	1916-02-17	1916-10-27
1917	1917-02-05	1917-12-20
1918	1918-06-06	1918-09-12
1919	1919-01-13	1919-10-08
1920	1920-02-03	1920-09-10
1921	1921-01-22	1921-09-13
1922	1922-01-02	1922-11-13
1923	1923-02-17	1923-11-01
1924	1924-02-26	1924-11-27
1925	1925-05-28	1925-11-10
1926	1926-01-09	1926-12-16
1927	1927-01-11	1927-11-15
1928	1928-01-24	1928-10-07
1929	1929-01-22	1929-12-26
1930	1930-06-17	1930-12-30
1931	1931-02-03	1931-11-05
1932	1932-02-20	1932-11-05
1933	1933-01-21	1933-10-22
1934	1934-01-13	1934-11-07
1935	1935-01-02	1935-09-21
1936	1936-05-24	1936-10-31
1937	1937-02-11	1937-10-06
1938	1938-01-09	1938-10-10
1939	1939-01-23	1939-10-06
1940	1940-02-04	1940-12-21
1941	1941-01-19	1941-10-09
1942	1942-01-18	1942-09-29
1943	1943-01-08	1943-09-28
1944	1944-01-15	1944-10-04
1945	1945-01-07	1945-10-22
1946	1946-02-25	1946-11-22
1947	1947-02-16	1947-10-11
1948	1948-01-06	1948-11-25
1950	1950-02-21	1950-12-28
1951	1951-01-20	1951-10-11
1952	1952-02-23	1952-12-28
1953	1953-01-16	1953-09-28
1954	1954-02-22	1954-10-01
1955	1955-01-21	1955-10-11
1956	1956-01-27	1956-12-29
1957	1957-01-09	1957-09-11
1958	1958-01-28	1958-10-21
1959	1959-01-30	1959-10-22
1960	1960-03-07	1960-10-02
1961	1961-02-01	1961-12-18
1962	1962-02-18	1962-10-03
1963	1963-05-08	1963-10-23
1964	1964-02-09	1964-10-21
1965	1965-03-29	1965-10-23
1967	1967-03-20	1967-09-19
1968	1968-07-16	1968-10-05
1969	1969-05-02	1969-09-19
1970	1970-01-17	1970-10-06

Every Fixed Threshold

Fixed thresholds at Patan
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	63	49	1961	30
25 mm (0.98 in): Days with 25 mm or more rain	63	32	1943	16
50 mm (1.97 in): Days with 50 mm or more rain	63	15	1942	4
100 mm (3.94 in): Days with 100 mm or more rain	39	3	1920	1
200 mm (7.87 in): Days with 200 mm or more rain	8	1	1906	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

Data for Patan threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Patan Threshold Days by Year (IN004091400)

Key Facts for Patan Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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