Serowe Threshold Days by Year (BC008033530)

4 fixed thresholds counted per year at Serowe (BC008033530): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Serowe Thresholds

Serowe: days with 10 mm (0.39 in) or more of precipitation in 66 years, most in 1940 with 28.
Serowe: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1940 with 12.
Serowe: days with 50 mm (1.97 in) or more of precipitation in 47 years, most in 1955 with 5.
Serowe: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1949 with 1.
4 fixed thresholds have at least one qualifying day at Serowe.

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

66 years with a qualifying day

Days per year at Serowe with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1940.

Days with 10 mm (0.39 in) or more of precipitation per year at Serowe
Year	Days	Decade average
1922	8	11.3
1923	18	11.3
1924	16	11.3
1925	17	11.3
1926	5	11.3
1927	4	11.3
1928	10	11.3
1929	12	11.3
1930	15	12.7
1931	13	12.7
1932	13	12.7
1933	14	12.7
1934	9	12.7
1935	7	12.7
1936	19	12.7
1937	9	12.7
1938	13	12.7
1939	15	12.7
1940	28	17.5
1941	15	17.5
1942	11	17.5
1943	19	17.5
1944	19	17.5
1945	15	17.5
1946	16	17.5
1947	13	17.5
1948	22	17.5
1949	17	17.5
1950	13	15.9
1951	17	15.9
1952	10	15.9
1953	15	15.9
1954	16	15.9
1955	27	15.9
1956	19	15.9
1957	14	15.9
1958	19	15.9
1959	9	15.9
1960	16	14.2
1961	16	14.2
1962	9	14.2
1963	11	14.2
1964	11	14.2
1966	14	14.2
1967	20	14.2
1968	14	14.2
1969	17	14.2
1970	14	16.4
1971	15	16.4
1972	21	16.4
1973	13	16.4
1974	26	16.4
1975	22	16.4
1976	18	16.4
1977	15	16.4
1978	13	16.4
1979	7	16.4
1980	17	13.9
1981	18	13.9
1982	8	13.9
1983	12	13.9
1984	7	13.9
1985	8	13.9
1986	15	13.9
1987	18	13.9
1988	22	13.9

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

First to last qualifying date each year at Serowe
Year	First date	Last date
1922	1922-01-11	1922-12-28
1923	1923-01-02	1923-12-20
1924	1924-01-26	1924-12-23
1925	1925-01-05	1925-09-12
1926	1926-02-25	1926-12-09
1927	1927-01-05	1927-10-16
1928	1928-01-11	1928-12-29
1929	1929-01-19	1929-12-20
1930	1930-01-05	1930-12-23
1931	1931-01-02	1931-12-20
1932	1932-01-13	1932-12-06
1933	1933-01-05	1933-12-24
1934	1934-01-07	1934-12-28
1935	1935-02-01	1935-12-16
1936	1936-01-01	1936-12-14
1937	1937-02-06	1937-12-20
1938	1938-01-11	1938-12-30
1939	1939-01-31	1939-12-26
1940	1940-01-18	1940-12-31
1941	1941-01-10	1941-12-17
1942	1942-01-08	1942-12-23
1943	1943-01-05	1943-12-27
1944	1944-01-01	1944-10-25
1945	1945-01-22	1945-12-08
1946	1946-01-08	1946-12-22
1947	1947-01-03	1947-12-30
1948	1948-01-01	1948-12-31
1949	1949-01-20	1949-12-20
1950	1950-01-09	1950-12-18
1951	1951-01-21	1951-12-12
1952	1952-01-20	1952-12-17
1953	1953-01-01	1953-12-20
1954	1954-01-04	1954-12-29
1955	1955-01-21	1955-12-31
1956	1956-01-01	1956-12-29
1957	1957-01-11	1957-12-28
1958	1958-01-05	1958-12-09
1959	1959-01-24	1959-12-22
1960	1960-02-08	1960-12-30
1961	1961-01-18	1961-12-26
1962	1962-01-09	1962-12-21
1963	1963-01-08	1963-12-30
1964	1964-01-08	1964-11-20
1966	1966-01-21	1966-12-18
1967	1967-01-01	1967-12-22
1968	1968-02-02	1968-12-31
1969	1969-02-03	1969-12-09
1970	1970-02-07	1970-12-28
1971	1971-01-13	1971-11-13
1972	1972-01-01	1972-12-18
1973	1973-01-14	1973-12-18
1974	1974-01-23	1974-12-13
1975	1975-01-16	1975-12-31
1976	1976-01-01	1976-12-28
1977	1977-02-01	1977-12-28
1978	1978-01-11	1978-12-11
1979	1979-01-18	1979-12-24
1980	1980-01-06	1980-12-14
1981	1981-01-04	1981-12-23
1982	1982-01-22	1982-11-23
1983	1983-01-13	1983-12-26
1984	1984-01-13	1984-11-25
1985	1985-01-16	1985-12-27
1986	1986-02-08	1986-11-30
1987	1987-01-10	1987-12-23
1988	1988-01-04	1988-11-28

Every Fixed Threshold

Fixed thresholds at Serowe
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	66	28	1940	22
25 mm (0.98 in): Days with 25 mm or more rain	65	12	1940	10
50 mm (1.97 in): Days with 50 mm or more rain	47	5	1955	4
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1922.

Download the Data

Data for Serowe 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).

Serowe Threshold Days by Year (BC008033530)

Key Facts for Serowe Thresholds

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

Every Fixed Threshold

Download the Data

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