Harstena Threshold Days by Year (SWE00138416)

3 fixed thresholds counted per year at Harstena (SWE00138416): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Harstena Thresholds

Harstena: days with 10 mm (0.39 in) or more of precipitation in 54 years, most in 1958 with 24.
Harstena: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1960 with 6.
Harstena: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1950 with 1.
3 fixed thresholds have at least one qualifying day at Harstena.

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

54 years with a qualifying day

Days per year at Harstena with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1958.

Days with 10 mm (0.39 in) or more of precipitation per year at Harstena
Year	Days	Decade average
1945	14	12.2
1946	12	12.2
1947	9	12.2
1948	19	12.2
1949	7	12.2
1950	20	15.2
1951	14	15.2
1952	20	15.2
1953	10	15.2
1954	18	15.2
1955	8	15.2
1956	6	15.2
1957	19	15.2
1958	24	15.2
1959	13	15.2
1960	23	15.4
1961	17	15.4
1962	18	15.4
1963	11	15.4
1964	9	15.4
1965	18	15.4
1966	18	15.4
1967	17	15.4
1968	15	15.4
1969	8	15.4
1970	17	14.1
1971	12	14.1
1972	10	14.1
1973	13	14.1
1974	21	14.1
1975	7	14.1
1976	15	14.1
1977	15	14.1
1978	18	14.1
1979	13	14.1
1980	16	13.7
1981	16	13.7
1982	6	13.7
1983	14	13.7
1984	17	13.7
1985	20	13.7
1986	8	13.7
1987	17	13.7
1988	14	13.7
1989	9	13.7
1990	11	13
1991	11	13
1992	9	13
1993	11	13
1994	13	13
1995	15	13
1996	16	13
1997	11	13
1998	20	13

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

First to last qualifying date each year at Harstena
Year	First date	Last date
1945	1945-04-28	1945-11-09
1946	1946-02-24	1946-09-21
1947	1947-02-03	1947-11-29
1948	1948-01-10	1948-09-19
1949	1949-05-27	1949-12-29
1950	1950-01-03	1950-12-31
1951	1951-02-21	1951-11-13
1952	1952-02-08	1952-12-22
1953	1953-01-31	1953-09-22
1954	1954-01-19	1954-12-22
1955	1955-02-17	1955-12-17
1956	1956-06-15	1956-12-21
1957	1957-02-01	1957-09-29
1958	1958-02-09	1958-12-26
1959	1959-01-10	1959-11-17
1960	1960-01-05	1960-12-22
1961	1961-01-04	1961-11-11
1962	1962-01-22	1962-12-28
1963	1963-06-26	1963-11-26
1964	1964-06-02	1964-10-23
1965	1965-01-21	1965-12-10
1966	1966-01-01	1966-12-17
1967	1967-01-31	1967-10-20
1968	1968-01-17	1968-11-09
1969	1969-04-20	1969-11-29
1970	1970-01-13	1970-12-07
1971	1971-03-10	1971-12-28
1972	1972-04-26	1972-11-13
1973	1973-02-15	1973-12-06
1974	1974-01-15	1974-12-28
1975	1975-03-26	1975-11-29
1976	1976-01-05	1976-12-28
1977	1977-01-12	1977-12-28
1978	1978-02-22	1978-12-31
1979	1979-01-10	1979-11-20
1980	1980-02-10	1980-12-23
1981	1981-02-11	1981-12-07
1982	1982-01-06	1982-10-13
1983	1983-01-17	1983-10-10
1984	1984-01-11	1984-10-25
1985	1985-01-05	1985-12-06
1986	1986-04-19	1986-11-20
1987	1987-01-08	1987-11-26
1988	1988-01-06	1988-12-18
1989	1989-06-03	1989-11-03
1990	1990-05-16	1990-11-24
1991	1991-01-10	1991-09-29
1992	1992-04-01	1992-11-11
1993	1993-01-24	1993-12-26
1994	1994-04-13	1994-11-14
1995	1995-01-22	1995-11-16
1996	1996-02-16	1996-12-30
1997	1997-04-24	1997-12-31
1998	1998-01-23	1998-12-13

Every Fixed Threshold

Fixed thresholds at Harstena
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	54	24	1958	20
25 mm (0.98 in): Days with 25 mm or more rain	39	6	1960	4
50 mm (1.97 in): Days with 50 mm or more rain	5	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 1945.

Download the Data

Data for Harstena 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).

Harstena Threshold Days by Year (SWE00138416)

Key Facts for Harstena Thresholds

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

Every Fixed Threshold

Download the Data

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