Ristna Threshold Days by Year (ENE00175047)

3 fixed thresholds counted per year at Ristna (ENE00175047): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ristna Thresholds

Ristna: days with 10 mm (0.39 in) or more of precipitation in 88 years, most in 2011 with 25.
Ristna: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 2001 with 4.
Ristna: days with 50 mm (1.97 in) or more of precipitation in 8 years, most in 1949 with 1.
3 fixed thresholds have at least one qualifying day at Ristna.

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

88 years with a qualifying day

Days per year at Ristna with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 2011.

Days with 10 mm (0.39 in) or more of precipitation per year at Ristna
Year	Days	Decade average
1932	10	11.3
1933	5	11.3
1934	12	11.3
1935	15	11.3
1936	17	11.3
1937	13	11.3
1938	7	11.3
1943	13	12.2
1946	17	12.2
1947	3	12.2
1948	15	12.2
1949	13	12.2
1950	16	12.8
1951	7	12.8
1952	15	12.8
1953	14	12.8
1954	15	12.8
1955	13	12.8
1956	16	12.8
1957	16	12.8
1958	6	12.8
1959	10	12.8
1960	14	14.3
1961	16	14.3
1962	15	14.3
1963	12	14.3
1964	12	14.3
1965	16	14.3
1966	12	14.3
1967	20	14.3
1968	15	14.3
1969	11	14.3
1970	14	12.6
1971	12	12.6
1972	17	12.6
1973	12	12.6
1974	14	12.6
1975	14	12.6
1976	6	12.6
1977	16	12.6
1978	13	12.6
1979	8	12.6
1980	21	16.2
1981	23	16.2
1982	13	16.2
1983	11	16.2
1984	16	16.2
1985	11	16.2
1986	17	16.2
1987	21	16.2
1988	20	16.2
1989	9	16.2
1990	17	14.5
1991	15	14.5
1992	17	14.5
1993	15	14.5
1994	15	14.5
1995	13	14.5
1996	9	14.5
1997	14	14.5
1998	13	14.5
1999	17	14.5
2000	12	13.5
2001	18	13.5
2002	6	13.5
2003	7	13.5
2004	16	13.5
2005	11	13.5
2006	11	13.5
2007	21	13.5
2008	19	13.5
2009	14	13.5
2010	16	15.4
2011	25	15.4
2012	22	15.4
2013	11	15.4
2014	16	15.4
2015	12	15.4
2016	8	15.4
2017	16	15.4
2018	15	15.4
2019	13	15.4
2020	15	15.2
2021	15	15.2
2022	15	15.2
2023	15	15.2
2024	14	15.2
2025	17	15.2

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

First to last qualifying date each year at Ristna
Year	First date	Last date
1932	1932-04-06	1932-09-22
1933	1933-05-16	1933-11-05
1934	1934-07-08	1934-11-13
1935	1935-04-09	1935-12-06
1936	1936-01-20	1936-12-23
1937	1937-01-01	1937-11-24
1938	1938-07-11	1938-10-13
1943	1943-02-11	1943-11-15
1946	1946-02-15	1946-11-06
1947	1947-07-11	1947-12-12
1948	1948-02-02	1948-11-18
1949	1949-01-06	1949-12-10
1950	1950-04-23	1950-12-01
1951	1951-01-03	1951-11-13
1952	1952-04-23	1952-11-26
1953	1953-07-18	1953-09-19
1954	1954-06-13	1954-12-04
1955	1955-01-10	1955-12-17
1956	1956-01-12	1956-12-02
1957	1957-02-01	1957-12-07
1958	1958-02-11	1958-08-13
1959	1959-01-12	1959-09-21
1960	1960-04-26	1960-12-10
1961	1961-01-03	1961-11-29
1962	1962-01-22	1962-10-31
1963	1963-06-25	1963-12-31
1964	1964-02-07	1964-12-12
1965	1965-07-02	1965-12-10
1966	1966-01-29	1966-12-24
1967	1967-04-17	1967-12-07
1968	1968-02-17	1968-12-31
1969	1969-03-08	1969-12-03
1970	1970-04-21	1970-12-19
1971	1971-06-10	1971-12-09
1972	1972-02-10	1972-11-01
1973	1973-02-06	1973-11-29
1974	1974-01-15	1974-11-19
1975	1975-01-09	1975-12-07
1976	1976-01-19	1976-11-04
1977	1977-04-12	1977-12-23
1978	1978-01-11	1978-10-16
1979	1979-07-17	1979-12-16
1980	1980-05-24	1980-12-25
1981	1981-01-12	1981-12-19
1982	1982-01-25	1982-12-20
1983	1983-01-17	1983-12-29
1984	1984-01-02	1984-12-06
1985	1985-04-29	1985-12-28
1986	1986-01-03	1986-12-28
1987	1987-05-09	1987-12-08
1988	1988-01-06	1988-12-26
1989	1989-04-18	1989-11-25
1990	1990-01-12	1990-12-19
1991	1991-04-30	1991-12-19
1992	1992-02-14	1992-11-05
1993	1993-01-13	1993-10-13
1994	1994-04-06	1994-12-29
1995	1995-01-22	1995-11-16
1996	1996-07-05	1996-11-27
1997	1997-01-12	1997-12-25
1998	1998-03-03	1998-12-25
1999	1999-01-04	1999-12-17
2000	2000-03-02	2000-12-12
2001	2001-01-24	2001-12-20
2002	2002-06-30	2002-09-19
2003	2003-04-09	2003-12-24
2004	2004-01-31	2004-12-30
2005	2005-05-31	2005-11-14
2006	2006-04-09	2006-12-02
2007	2007-01-14	2007-12-07
2008	2008-01-19	2008-11-24
2009	2009-03-09	2009-10-18
2010	2010-02-01	2010-11-08
2011	2011-03-10	2011-12-16
2012	2012-01-01	2012-11-27
2013	2013-03-01	2013-10-28
2014	2014-01-06	2014-12-12
2015	2015-01-10	2015-11-29
2016	2016-06-17	2016-11-01
2017	2017-04-28	2017-12-11
2018	2018-01-31	2018-11-12
2019	2019-01-02	2019-11-13
2020	2020-01-16	2020-12-18
2021	2021-05-05	2021-11-07
2022	2022-01-20	2022-12-06
2023	2023-01-03	2023-11-24
2024	2024-02-16	2024-12-19
2025	2025-01-01	2025-11-25

Every Fixed Threshold

Fixed thresholds at Ristna
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	88	25	2011	17
25 mm (0.98 in): Days with 25 mm or more rain	53	4	2001	3
50 mm (1.97 in): Days with 50 mm or more rain	8	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 1932.

Download the Data

Data for Ristna 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).

Ristna Threshold Days by Year (ENE00175047)

Key Facts for Ristna Thresholds

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

Every Fixed Threshold

Download the Data

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