Boreli Threshold Days by Year (IN003020200)

5 fixed thresholds counted per year at Boreli (IN003020200): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boreli Thresholds

Boreli: days with 10 mm (0.39 in) or more of precipitation in 58 years, most in 1905 with 82.
Boreli: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 1939 with 45.
Boreli: days with 50 mm (1.97 in) or more of precipitation in 58 years, most in 1918 with 19.
Boreli: days with 100 mm (3.94 in) or more of precipitation in 34 years, most in 1904 with 5.
5 fixed thresholds have at least one qualifying day at Boreli.

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

58 years with a qualifying day

Days per year at Boreli with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 82 in 1905.

Days with 10 mm (0.39 in) or more of precipitation per year at Boreli
Year	Days	Decade average
1901	60	65.2
1902	62	65.2
1903	63	65.2
1904	79	65.2
1905	82	65.2
1906	66	65.2
1907	56	65.2
1908	64	65.2
1909	55	65.2
1910	65	68.8
1911	78	68.8
1912	65	68.8
1913	77	68.8
1914	66	68.8
1915	72	68.8
1916	63	68.8
1917	53	68.8
1918	80	68.8
1919	69	68.8
1920	66	66.2
1921	74	66.2
1922	60	66.2
1923	55	66.2
1924	65	66.2
1925	72	66.2
1926	60	66.2
1927	74	66.2
1928	66	66.2
1929	70	66.2
1930	74	67.9
1931	71	67.9
1932	71	67.9
1933	55	67.9
1934	65	67.9
1935	66	67.9
1936	70	67.9
1937	59	67.9
1938	72	67.9
1939	76	67.9
1940	63	65.7
1941	60	65.7
1942	63	65.7
1943	58	65.7
1944	67	65.7
1945	71	65.7
1946	70	65.7
1947	56	65.7
1948	69	65.7
1949	80	65.7
1950	57	64.4
1951	55	64.4
1952	65	64.4
1953	62	64.4
1954	75	64.4
1955	69	64.4
1956	60	64.4
1957	72	64.4
1966	60	60

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

First to last qualifying date each year at Boreli
Year	First date	Last date
1901	1901-01-19	1901-12-01
1902	1902-01-19	1902-11-16
1903	1903-02-15	1903-11-27
1904	1904-02-02	1904-11-24
1905	1905-02-18	1905-11-12
1906	1906-02-11	1906-11-08
1907	1907-01-28	1907-11-06
1908	1908-01-29	1908-10-28
1909	1909-01-25	1909-11-26
1910	1910-02-04	1910-10-18
1911	1911-01-26	1911-12-20
1912	1912-02-24	1912-11-03
1913	1913-02-15	1913-12-24
1914	1914-02-18	1914-11-10
1915	1915-02-06	1915-10-25
1916	1916-01-19	1916-11-21
1917	1917-04-07	1917-11-20
1918	1918-03-02	1918-11-08
1919	1919-04-06	1919-11-16
1920	1920-01-14	1920-10-28
1921	1921-03-09	1921-11-25
1922	1922-01-30	1922-12-16
1923	1923-02-02	1923-10-05
1924	1924-01-22	1924-11-17
1925	1925-01-02	1925-11-08
1926	1926-01-10	1926-12-12
1927	1927-02-11	1927-10-21
1928	1928-03-05	1928-10-31
1929	1929-01-17	1929-12-17
1930	1930-03-10	1930-11-21
1931	1931-01-11	1931-10-29
1932	1932-03-18	1932-12-08
1933	1933-04-05	1933-11-24
1934	1934-02-16	1934-12-31
1935	1935-03-21	1935-11-28
1936	1936-02-19	1936-12-29
1937	1937-02-14	1937-11-10
1938	1938-01-29	1938-11-13
1939	1939-04-07	1939-10-25
1940	1940-02-11	1940-11-02
1941	1941-01-31	1941-12-28
1942	1942-03-18	1942-11-19
1943	1943-01-11	1943-12-28
1944	1944-03-27	1944-10-31
1945	1945-01-06	1945-10-22
1946	1946-03-24	1946-11-13
1947	1947-03-13	1947-11-21
1948	1948-01-30	1948-12-29
1949	1949-01-17	1949-10-31
1950	1950-03-11	1950-11-19
1951	1951-03-31	1951-11-27
1952	1952-03-03	1952-11-21
1953	1953-01-23	1953-10-06
1954	1954-01-21	1954-12-06
1955	1955-03-17	1955-10-26
1956	1956-01-30	1956-11-07
1957	1957-01-09	1957-11-30
1966	1966-01-01	1966-10-01

Every Fixed Threshold

Fixed thresholds at Boreli
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	58	82	1905	60
25 mm (0.98 in): Days with 25 mm or more rain	58	45	1939	26
50 mm (1.97 in): Days with 50 mm or more rain	58	19	1918	8
100 mm (3.94 in): Days with 100 mm or more rain	34	5	1904	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1950	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Boreli 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).

Boreli Threshold Days by Year (IN003020200)

Key Facts for Boreli Thresholds

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

Every Fixed Threshold

Download the Data

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