Teresina Threshold Days by Year (BR037041390)

5 fixed thresholds counted per year at Teresina (BR037041390): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Teresina Thresholds

Teresina: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1929 with 78.
Teresina: days with 25 mm (0.98 in) or more of precipitation in 56 years, most in 1947 with 59.
Teresina: days with 50 mm (1.97 in) or more of precipitation in 53 years, most in 1947 with 29.
Teresina: days with 100 mm (3.94 in) or more of precipitation in 13 years, most in 1950 with 11.
5 fixed thresholds have at least one qualifying day at Teresina.

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

57 years with a qualifying day

Days per year at Teresina with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 78 in 1929.

Days with 10 mm (0.39 in) or more of precipitation per year at Teresina
Year	Days	Decade average
1914	31	37
1915	30	37
1916	38	37
1917	55	37
1918	47	37
1919	21	37
1920	41	55.8
1921	65	55.8
1922	51	55.8
1923	49	55.8
1924	70	55.8
1925	66	55.8
1926	45	55.8
1928	37	55.8
1929	78	55.8
1930	28	34.7
1931	36	34.7
1932	15	34.7
1933	50	34.7
1934	52	34.7
1935	48	34.7
1936	28	34.7
1938	26	34.7
1939	29	34.7
1940	41	36.1
1941	25	36.1
1942	21	36.1
1943	24	36.1
1944	24	36.1
1945	28	36.1
1946	27	36.1
1947	76	36.1
1948	40	36.1
1949	55	36.1
1950	52	32.9
1951	12	32.9
1952	45	32.9
1953	23	32.9
1954	38	32.9
1955	38	32.9
1956	49	32.9
1957	41	32.9
1958	3	32.9
1959	28	32.9
1960	49	43
1963	42	43
1965	35	43
1966	34	43
1967	55	43
1968	46	43
1969	40	43
1971	43	38.2
1972	29	38.2
1974	44	38.2
1976	28	38.2
1977	52	38.2
1978	33	38.2

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

First to last qualifying date each year at Teresina
Year	First date	Last date
1914	1914-01-01	1914-12-26
1915	1915-01-15	1915-12-25
1916	1916-01-14	1916-12-31
1917	1917-01-03	1917-12-31
1918	1918-01-02	1918-12-31
1919	1919-01-02	1919-12-30
1920	1920-01-17	1920-12-30
1921	1921-01-01	1921-12-14
1922	1922-01-10	1922-12-27
1923	1923-01-03	1923-12-27
1924	1924-01-09	1924-12-29
1925	1925-01-21	1925-12-28
1926	1926-01-07	1926-04-29
1928	1928-01-03	1928-12-25
1929	1929-01-07	1929-12-31
1930	1930-01-24	1930-12-22
1931	1931-01-03	1931-12-31
1932	1932-01-27	1932-10-05
1933	1933-01-13	1933-11-30
1934	1934-01-01	1934-12-28
1935	1935-01-14	1935-12-28
1936	1936-01-04	1936-12-12
1938	1938-01-07	1938-12-28
1939	1939-01-05	1939-12-30
1940	1940-01-06	1940-12-22
1941	1941-01-06	1941-12-06
1942	1942-01-04	1942-12-26
1943	1943-01-25	1943-12-20
1944	1944-01-10	1944-12-22
1945	1945-02-05	1945-12-23
1946	1946-01-02	1946-05-08
1947	1947-01-19	1947-12-31
1948	1948-01-02	1948-12-20
1949	1949-01-01	1949-12-24
1950	1950-01-09	1950-10-24
1951	1951-01-08	1951-03-27
1952	1952-01-14	1952-12-28
1953	1953-01-13	1953-12-23
1954	1954-01-21	1954-12-25
1955	1955-01-17	1955-11-26
1956	1956-01-02	1956-12-29
1957	1957-01-01	1957-10-08
1958	1958-12-05	1958-12-07
1959	1959-01-19	1959-11-14
1960	1960-01-02	1960-12-30
1963	1963-01-11	1963-12-31
1965	1965-01-07	1965-11-02
1966	1966-01-10	1966-12-30
1967	1967-01-07	1967-12-31
1968	1968-01-21	1968-12-13
1969	1969-01-06	1969-12-28
1971	1971-01-11	1971-12-21
1972	1972-01-07	1972-12-24
1974	1974-01-13	1974-12-10
1976	1976-01-01	1976-12-19
1977	1977-01-01	1977-12-30
1978	1978-01-15	1978-12-22

Every Fixed Threshold

Fixed thresholds at Teresina
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	57	78	1929	33
25 mm (0.98 in): Days with 25 mm or more rain	56	59	1947	17
50 mm (1.97 in): Days with 50 mm or more rain	53	29	1947	4
100 mm (3.94 in): Days with 100 mm or more rain	13	11	1950	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 1914.

Download the Data

Data for Teresina 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).

Teresina Threshold Days by Year (BR037041390)

Key Facts for Teresina Thresholds

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

Every Fixed Threshold

Download the Data

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