Bolsoy Santar Threshold Days by Year (RSM00031174)

10 fixed thresholds counted per year at Bolsoy Santar (RSM00031174): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bolsoy Santar Thresholds

Bolsoy Santar: days with 10 mm (0.39 in) or more of precipitation in 92 years, most in 1956 with 31.
Bolsoy Santar: nights with a minimum temperature at or below 0 C (32 F) in 87 years, most in 1982 with 263.
Bolsoy Santar: nights with a minimum temperature at or below -10 C (14 F) in 87 years, most in 1987 with 172.
Bolsoy Santar: nights with a minimum temperature at or below -20 C (-4 F) in 87 years, most in 1965 with 111.
10 fixed thresholds have at least one qualifying day at Bolsoy Santar.

Nights at or below 0 C (32 F)

87 years with a qualifying day

Days per year at Bolsoy Santar with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 263 in 1982.

Nights at or below 0 C (32 F) per year at Bolsoy Santar
Year	Days	Decade average
1927	220	232.5
1928	245	232.5
1930	237	236.3
1936	224	236.3
1939	248	236.3
1940	260	236.9
1941	257	236.9
1942	232	236.9
1943	219	236.9
1944	230	236.9
1945	239	236.9
1946	235	236.9
1947	230	236.9
1948	228	236.9
1949	239	236.9
1950	240	234.9
1951	215	234.9
1952	237	234.9
1953	239	234.9
1954	245	234.9
1955	251	234.9
1956	235	234.9
1957	225	234.9
1958	227	234.9
1960	261	245.5
1961	241	245.5
1962	241	245.5
1963	246	245.5
1964	241	245.5
1965	245	245.5
1966	252	245.5
1967	245	245.5
1968	237	245.5
1969	246	245.5
1970	244	247.3
1971	251	247.3
1972	238	247.3
1973	256	247.3
1974	248	247.3
1975	234	247.3
1976	256	247.3
1977	250	247.3
1978	249	247.3
1979	247	247.3
1980	252	252.9
1981	243	252.9
1982	263	252.9
1983	255	252.9
1984	248	252.9
1985	255	252.9
1986	250	252.9
1987	261	252.9
1988	262	252.9
1989	240	252.9
1990	237	244.2
1991	255	244.2
1992	248	244.2
1993	244	244.2
1994	245	244.2
1995	245	244.2
1996	237	244.2
1997	241	244.2
1998	243	244.2
1999	247	244.2
2000	241	238.7
2001	251	238.7
2002	235	238.7
2003	240	238.7
2004	223	238.7
2005	247	238.7
2006	247	238.7
2007	247	238.7
2008	234	238.7
2009	222	238.7
2010	236	236.7
2011	243	236.7
2012	227	236.7
2013	243	236.7
2014	228	236.7
2015	243	236.7
2016	250	236.7
2017	238	236.7
2018	242	236.7
2019	217	236.7
2020	212	185.7
2021	222	185.7
2025	123	185.7

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

First to last qualifying date each year at Bolsoy Santar
Year	First date	Last date
1927	1927-01-01	1927-12-31
1928	1928-01-01	1928-12-31
1930	1930-01-01	1930-11-30
1936	1936-01-01	1936-12-31
1939	1939-01-01	1939-12-31
1940	1940-01-01	1940-12-31
1941	1941-01-01	1941-12-31
1942	1942-01-02	1942-12-31
1943	1943-01-01	1943-12-30
1944	1944-01-01	1944-12-31
1945	1945-01-01	1945-12-31
1946	1946-01-01	1946-12-31
1947	1947-01-01	1947-12-31
1948	1948-01-01	1948-12-31
1949	1949-01-01	1949-12-31
1950	1950-01-01	1950-12-31
1951	1951-01-01	1951-12-31
1952	1952-01-01	1952-12-31
1953	1953-01-01	1953-12-31
1954	1954-01-01	1954-12-31
1955	1955-01-01	1955-12-31
1956	1956-01-01	1956-12-31
1957	1957-01-01	1957-12-31
1958	1958-01-01	1958-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	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	1971-12-31
1972	1972-01-01	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
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	1980-12-31
1981	1981-01-01	1981-12-31
1982	1982-01-01	1982-12-31
1983	1983-01-01	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	1990-12-31
1991	1991-01-01	1991-12-31
1992	1992-01-01	1992-12-31
1993	1993-01-01	1993-12-31
1994	1994-01-01	1994-12-31
1995	1995-01-01	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	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-31
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	2004-12-31
2005	2005-01-01	2005-12-31
2006	2006-01-01	2006-12-31
2007	2007-01-01	2007-12-31
2008	2008-01-01	2008-12-31
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	2012-12-31
2013	2013-01-01	2013-12-31
2014	2014-01-01	2014-12-31
2015	2015-01-01	2015-12-31
2016	2016-01-01	2016-12-31
2017	2017-01-01	2017-12-31
2018	2018-01-01	2018-12-31
2019	2019-01-01	2019-12-31
2020	2020-01-02	2020-12-31
2021	2021-01-01	2021-12-31
2025	2025-01-01	2025-06-08

Every Fixed Threshold

Fixed thresholds at Bolsoy Santar
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	2	1	1988	1
0 C (32 F): Ice days (max	85	177	1984	88
0 C (32 F): Frost days (min	87	263	1982	123
-10 C (14 F): Days with min	87	172	1987	80
-20 C (-4 F): Days with min	87	111	1965	55
-30 C (-22 F): Days with min	87	48	1965	15
-40 C (-40 F): Days with min	15	3	1940	1
10 mm (0.39 in): Days with 10 mm or more rain	92	31	1956	8
25 mm (0.98 in): Days with 25 mm or more rain	84	10	2008	1
50 mm (1.97 in): Days with 50 mm or more rain	23	2	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 1988.

Download the Data

Data for Bolsoy Santar 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).

Bolsoy Santar Threshold Days by Year (RSM00031174)

Key Facts for Bolsoy Santar Thresholds

Nights at or below 0 C (32 F)

Every Fixed Threshold

Download the Data

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