Borlam Threshold Days by Year (IN001170700)

5 fixed thresholds counted per year at Borlam (IN001170700): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Borlam Thresholds

Borlam: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1955 with 53.
Borlam: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1955 with 30.
Borlam: days with 50 mm (1.97 in) or more of precipitation in 37 years, most in 1953 with 13.
Borlam: days with 100 mm (3.94 in) or more of precipitation in 19 years, most in 1956 with 5.
5 fixed thresholds have at least one qualifying day at Borlam.

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

37 years with a qualifying day

Days per year at Borlam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1955.

Days with 10 mm (0.39 in) or more of precipitation per year at Borlam
Year	Days	Decade average
1931	36	35
1932	21	35
1933	47	35
1934	38	35
1935	26	35
1936	42	35
1937	37	35
1938	50	35
1939	18	35
1940	36	31.4
1941	17	31.4
1942	33	31.4
1943	27	31.4
1944	28	31.4
1945	32	31.4
1946	31	31.4
1947	29	31.4
1948	46	31.4
1949	35	31.4
1950	31	37.2
1951	36	37.2
1952	31	37.2
1953	45	37.2
1954	29	37.2
1955	53	37.2
1956	46	37.2
1957	38	37.2
1958	36	37.2
1959	27	37.2
1960	31	34.9
1961	39	34.9
1962	45	34.9
1963	48	34.9
1964	27	34.9
1968	24	34.9
1969	30	34.9
1970	42	42

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

First to last qualifying date each year at Borlam
Year	First date	Last date
1931	1931-02-17	1931-11-13
1932	1932-02-26	1932-10-21
1933	1933-02-23	1933-12-24
1934	1934-03-07	1934-11-03
1935	1935-01-31	1935-10-21
1936	1936-02-05	1936-11-21
1937	1937-02-26	1937-10-06
1938	1938-02-06	1938-10-09
1939	1939-03-17	1939-11-01
1940	1940-04-24	1940-10-15
1941	1941-06-09	1941-09-24
1942	1942-04-03	1942-09-18
1943	1943-01-08	1943-10-21
1944	1944-02-19	1944-10-28
1945	1945-06-10	1945-11-13
1946	1946-02-16	1946-11-19
1947	1947-02-20	1947-09-28
1948	1948-04-26	1948-11-28
1949	1949-02-22	1949-11-19
1950	1950-06-02	1950-10-14
1951	1951-03-31	1951-10-03
1952	1952-02-22	1952-10-17
1953	1953-04-16	1953-10-26
1954	1954-03-17	1954-09-29
1955	1955-05-04	1955-10-25
1956	1956-06-19	1956-11-06
1957	1957-02-28	1957-10-25
1958	1958-04-20	1958-11-28
1959	1959-04-17	1959-08-28
1960	1960-03-10	1960-11-07
1961	1961-05-14	1961-11-11
1962	1962-04-12	1962-12-05
1963	1963-03-28	1963-10-25
1964	1964-03-31	1964-11-11
1968	1968-03-03	1968-11-08
1969	1969-04-25	1969-11-24
1970	1970-04-06	1970-09-24

Every Fixed Threshold

Fixed thresholds at Borlam
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	37	53	1955	42
25 mm (0.98 in): Days with 25 mm or more rain	37	30	1955	18
50 mm (1.97 in): Days with 50 mm or more rain	37	13	1953	5
100 mm (3.94 in): Days with 100 mm or more rain	19	5	1956	1
200 mm (7.87 in): Days with 200 mm or more rain	3	1	1941	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

Data for Borlam 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).

Borlam Threshold Days by Year (IN001170700)

Key Facts for Borlam Thresholds

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

Every Fixed Threshold

Download the Data

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