Hanko Russaro Threshold Days by Year

9 fixed thresholds counted per year at Hanko Russaro (FIE00141925): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hanko Russaro Thresholds

Hanko Russaro: nights with a minimum temperature at or below 0 C (32 F) in 68 years, most in 1985 with 155.
Hanko Russaro: days with a maximum temperature at or below 0 C (32 F) in 67 years, most in 1969 with 97.
Hanko Russaro: nights with a minimum temperature at or below -10 C (14 F) in 63 years, most in 1963 with 52.
Hanko Russaro: days with 10 mm (0.39 in) or more of precipitation in 53 years, most in 1984 with 23.
9 fixed thresholds have at least one qualifying day at Hanko Russaro.

Nights at or below 0 C (32 F)

68 years with a qualifying day

Days per year at Hanko Russaro with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 155 in 1985.

Nights at or below 0 C (32 F) per year at Hanko Russaro
Year	Days	Decade average
1959	109	109
1960	135	129.5
1961	88	129.5
1962	116	129.5
1963	145	129.5
1964	130	129.5
1965	136	129.5
1966	146	129.5
1967	113	129.5
1968	140	129.5
1969	146	129.5
1970	139	123
1971	123	123
1972	112	123
1973	116	123
1974	93	123
1975	89	123
1976	146	123
1977	130	123
1978	140	123
1979	142	123
1980	137	122.2
1981	133	122.2
1982	112	122.2
1983	109	122.2
1984	111	122.2
1985	155	122.2
1986	125	122.2
1987	141	122.2
1988	131	122.2
1989	68	122.2
1990	78	104.8
1991	90	104.8
1992	89	104.8
1993	111	104.8
1994	104	104.8
1995	99	104.8
1996	133	104.8
1997	123	104.8
1998	113	104.8
1999	108	104.8
2000	88	101.5
2001	111	101.5
2002	124	101.5
2003	121	101.5
2004	113	101.5
2005	104	101.5
2006	108	101.5
2007	71	101.5
2008	61	101.5
2009	114	101.5
2010	141	92
2011	93	92
2012	115	92
2013	109	92
2014	69	92
2015	45	92
2016	95	92
2017	71	92
2018	106	92
2019	76	92
2020	37	83
2021	102	83
2022	102	83
2023	106	83
2024	98	83
2025	66	83
2026	70	83

For each year, a bar from the first to the last day at Hanko Russaro meeting 0 C (32 F).

First to last qualifying date each year at Hanko Russaro
Year	First date	Last date
1959	1959-01-01	1959-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-02	1962-12-31
1963	1963-01-01	1963-12-29
1964	1964-01-01	1964-12-31
1965	1965-01-03	1965-12-31
1966	1966-01-01	1966-12-30
1967	1967-01-04	1967-12-31
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-31
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-30
1972	1972-01-02	1972-12-26
1973	1973-01-07	1973-12-27
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-27
1976	1976-01-01	1976-12-31
1977	1977-01-01	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-28
1981	1981-01-01	1981-12-31
1982	1982-01-01	1982-12-31
1983	1983-01-03	1983-12-31
1984	1984-01-01	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-31
1990	1990-01-01	1990-12-27
1991	1991-01-01	1991-12-31
1992	1992-01-09	1992-12-31
1993	1993-01-01	1993-12-31
1994	1994-01-01	1994-12-29
1995	1995-01-02	1995-12-31
1996	1996-01-01	1996-12-31
1997	1997-01-01	1997-12-31
1998	1998-01-01	1998-12-31
1999	1999-01-03	1999-12-31
2000	2000-01-01	2000-12-29
2001	2001-01-01	2001-12-31
2002	2002-01-01	2002-12-31
2003	2003-01-01	2003-12-31
2004	2004-01-01	2004-12-30
2005	2005-01-02	2005-12-30
2006	2006-01-01	2006-12-26
2007	2007-01-11	2007-12-23
2008	2008-01-02	2008-12-30
2009	2009-01-01	2009-12-31
2010	2010-01-01	2010-12-31
2011	2011-01-01	2011-12-31
2012	2012-01-01	2012-12-29
2013	2013-01-05	2013-12-14
2014	2014-01-11	2014-12-30
2015	2015-01-04	2015-12-31
2016	2016-01-01	2016-12-29
2017	2017-01-01	2017-12-17
2018	2018-01-07	2018-12-31
2019	2019-01-02	2019-12-29
2020	2020-01-05	2020-12-28
2021	2021-01-02	2021-12-31
2022	2022-01-01	2022-12-28
2023	2023-01-02	2023-12-31
2024	2024-01-01	2024-12-31
2025	2025-01-01	2025-12-31
2026	2026-01-01	2026-04-10

Every Fixed Threshold

Fixed thresholds at Hanko Russaro
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	1	1	2003	1
0 C (32 F): Ice days (max	67	97	1969	50
0 C (32 F): Frost days (min	68	155	1985	70
-10 C (14 F): Days with min	63	52	1963	21
-20 C (-4 F): Days with min	19	15	1987	1
-30 C (-22 F): Days with min	3	3	1987	3
20 C (68 F): Tropical nights (min	18	15	2018	4
10 mm (0.39 in): Days with 10 mm or more rain	53	23	1984	5
25 mm (0.98 in): Days with 25 mm or more rain	31	3	1988	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2003.

Download the Data

Data for Hanko Russaro 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Hanko Russaro Threshold Days by Year

Key Facts for Hanko Russaro Thresholds

Nights at or below 0 C (32 F)

Every Fixed Threshold

Download the Data

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