Irkutsk Threshold Days by Year (RSM00030710)

14 fixed thresholds counted per year at Irkutsk (RSM00030710): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Irkutsk Thresholds

Irkutsk: days with 10 mm (0.39 in) or more of precipitation in 143 years, most in 1938 with 24.
Irkutsk: nights with a minimum temperature at or below 0 C (32 F) in 133 years, most in 1889 with 242.
Irkutsk: nights with a minimum temperature at or below -10 C (14 F) in 133 years, most in 1889 with 169.
Irkutsk: nights with a minimum temperature at or below -20 C (-4 F) in 133 years, most in 1889 with 113.
14 fixed thresholds have at least one qualifying day at Irkutsk.

Days at or above 30 C (86 F)

124 years with a qualifying day

Days per year at Irkutsk with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 24 in 2015.

Days at or above 30 C (86 F) per year at Irkutsk
Year	Days	Decade average
1887	9	12.3
1888	15	12.3
1889	13	12.3
1890	2	7
1891	8	7
1893	6	7
1894	5	7
1895	3	7
1896	11	7
1897	13	7
1898	8	7
1899	7	7
1900	19	7.6
1901	12	7.6
1902	5	7.6
1903	12	7.6
1904	8	7.6
1905	7	7.6
1906	5	7.6
1907	2	7.6
1908	1	7.6
1909	5	7.6
1911	4	4
1912	1	4
1913	4	4
1915	9	4
1916	6	4
1917	2	4
1919	2	4
1920	6	7.9
1921	21	7.9
1922	17	7.9
1923	8	7.9
1924	7	7.9
1925	2	7.9
1926	8	7.9
1927	4	7.9
1928	3	7.9
1929	3	7.9
1930	4	6
1931	5	6
1932	1	6
1933	8	6
1934	8	6
1935	12	6
1936	5	6
1937	5	6
1938	2	6
1939	10	6
1940	8	7.4
1941	6	7.4
1942	7	7.4
1943	12	7.4
1944	7	7.4
1945	4	7.4
1946	13	7.4
1947	6	7.4
1948	5	7.4
1949	6	7.4
1950	9	6
1951	6	6
1952	4	6
1953	8	6
1954	8	6
1955	7	6
1956	2	6
1957	4	6
1958	6	6
1960	1	4.3
1961	2	4.3
1962	4	4.3
1963	4	4.3
1964	11	4.3
1965	4	4.3
1966	1	4.3
1967	2	4.3
1968	3	4.3
1969	11	4.3
1970	9	5.7
1971	1	5.7
1973	3	5.7
1974	6	5.7
1975	3	5.7
1976	6	5.7
1977	5	5.7
1978	7	5.7
1979	11	5.7
1980	10	3.3
1982	1	3.3
1984	3	3.3
1985	1	3.3
1986	4	3.3
1987	3	3.3
1988	1	3.3
1990	4	6.6
1991	6	6.6
1992	5	6.6
1993	10	6.6
1994	9	6.6
1995	10	6.6
1996	4	6.6
1997	6	6.6
1998	4	6.6
1999	8	6.6
2000	15	7.2
2001	11	7.2
2002	12	7.2
2003	8	7.2
2004	8	7.2
2005	5	7.2
2006	5	7.2
2007	3	7.2
2008	3	7.2
2009	2	7.2
2010	7	9.7
2011	7	9.7
2012	1	9.7
2013	4	9.7
2014	10	9.7
2015	24	9.7
2016	12	9.7
2017	18	9.7
2018	4	9.7
2025	10	10

For each year, a bar from the first to the last day at Irkutsk meeting 30 C (86 F).

First to last qualifying date each year at Irkutsk
Year	First date	Last date
1887	1887-06-19	1887-08-05
1888	1888-06-26	1888-08-21
1889	1889-06-24	1889-08-01
1890	1890-06-16	1890-07-20
1891	1891-06-13	1891-08-09
1893	1893-06-20	1893-08-04
1894	1894-06-28	1894-07-19
1895	1895-07-20	1895-07-29
1896	1896-06-16	1896-07-17
1897	1897-06-13	1897-08-11
1898	1898-06-04	1898-08-04
1899	1899-06-03	1899-08-13
1900	1900-06-18	1900-08-22
1901	1901-05-12	1901-08-07
1902	1902-06-04	1902-07-04
1903	1903-06-12	1903-07-25
1904	1904-06-06	1904-07-17
1905	1905-07-09	1905-08-05
1906	1906-06-22	1906-06-27
1907	1907-06-24	1907-08-11
1908	1908-07-18	1908-07-18
1909	1909-06-21	1909-08-10
1911	1911-06-06	1911-07-15
1912	1912-07-13	1912-07-13
1913	1913-06-26	1913-07-16
1915	1915-06-09	1915-08-01
1916	1916-07-02	1916-08-01
1917	1917-07-28	1917-07-29
1919	1919-06-28	1919-07-28
1920	1920-05-31	1920-07-26
1921	1921-07-04	1921-08-16
1922	1922-07-01	1922-08-22
1923	1923-06-29	1923-08-11
1924	1924-05-26	1924-07-25
1925	1925-06-14	1925-06-15
1926	1926-05-31	1926-08-06
1927	1927-06-06	1927-07-28
1928	1928-07-25	1928-08-11
1929	1929-06-19	1929-08-11
1930	1930-06-28	1930-08-03
1931	1931-06-03	1931-07-08
1932	1932-07-09	1932-07-09
1933	1933-05-09	1933-07-28
1934	1934-06-12	1934-07-23
1935	1935-06-06	1935-08-07
1936	1936-07-02	1936-08-03
1937	1937-06-22	1937-08-06
1938	1938-07-29	1938-08-13
1939	1939-06-24	1939-08-14
1940	1940-06-16	1940-08-08
1941	1941-06-08	1941-08-04
1942	1942-06-17	1942-08-27
1943	1943-06-27	1943-08-06
1944	1944-06-08	1944-07-16
1945	1945-05-21	1945-07-18
1946	1946-05-24	1946-07-18
1947	1947-06-26	1947-07-14
1948	1948-06-19	1948-07-10
1949	1949-06-30	1949-08-08
1950	1950-05-31	1950-07-26
1951	1951-05-27	1951-07-20
1952	1952-06-05	1952-07-15
1953	1953-06-19	1953-08-05
1954	1954-06-26	1954-08-05
1955	1955-06-02	1955-08-19
1956	1956-07-05	1956-08-02
1957	1957-05-19	1957-08-01
1958	1958-06-15	1958-07-21
1960	1960-06-27	1960-06-27
1961	1961-05-21	1961-07-07
1962	1962-07-26	1962-07-29
1963	1963-06-10	1963-08-09
1964	1964-06-13	1964-08-05
1965	1965-07-01	1965-07-26
1966	1966-06-17	1966-06-17
1967	1967-07-09	1967-07-10
1968	1968-07-08	1968-08-13
1969	1969-06-16	1969-07-29
1970	1970-06-21	1970-07-24
1971	1971-06-21	1971-06-21
1973	1973-06-19	1973-06-27
1974	1974-05-25	1974-08-08
1975	1975-07-10	1975-07-31
1976	1976-06-09	1976-07-17
1977	1977-06-23	1977-07-12
1978	1978-06-15	1978-08-12
1979	1979-06-23	1979-07-04
1980	1980-05-09	1980-07-12
1982	1982-06-05	1982-06-05
1984	1984-06-20	1984-06-27
1985	1985-05-19	1985-05-19
1986	1986-06-16	1986-08-19
1987	1987-05-30	1987-07-14
1988	1988-08-02	1988-08-02
1990	1990-05-16	1990-07-09
1991	1991-06-19	1991-07-31
1992	1992-05-22	1992-07-14
1993	1993-06-27	1993-07-31
1994	1994-06-09	1994-07-15
1995	1995-07-01	1995-08-05
1996	1996-07-13	1996-07-21
1997	1997-06-18	1997-07-13
1998	1998-06-11	1998-07-13
1999	1999-05-25	1999-07-27
2000	2000-06-02	2000-08-10
2001	2001-05-11	2001-06-27
2002	2002-06-25	2002-08-12
2003	2003-06-11	2003-07-23
2004	2004-06-05	2004-07-16
2005	2005-06-14	2005-07-28
2006	2006-06-25	2006-07-07
2007	2007-07-28	2007-08-12
2008	2008-06-10	2008-07-29
2009	2009-06-13	2009-08-11
2010	2010-06-20	2010-07-23
2011	2011-06-13	2011-07-16
2012	2012-06-15	2012-06-15
2013	2013-06-19	2013-07-23
2014	2014-06-26	2014-08-17
2015	2015-05-22	2015-08-22
2016	2016-06-14	2016-07-31
2017	2017-05-16	2017-08-13
2018	2018-06-27	2018-07-04
2025	2025-05-24	2025-07-19

Every Fixed Threshold

Fixed thresholds at Irkutsk
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	124	24	2015	10
35 C (95 F): Days	11	2	1922	1
90 F (32.2 C): Days	73	9	1921	2
0 C (32 F): Ice days (max	131	160	1912	48
0 C (32 F): Frost days (min	133	242	1889	15
-10 C (14 F): Days with min	133	169	1889	2
-20 C (-4 F): Days with min	133	113	1889	1
-30 C (-22 F): Days with min	127	50	1929	11
-40 C (-40 F): Days with min	53	11	1916	1
20 C (68 F): Tropical nights (min	3	1	2001	1
10 mm (0.39 in): Days with 10 mm or more rain	143	24	1938	6
25 mm (0.98 in): Days with 25 mm or more rain	120	8	1938	3
50 mm (1.97 in): Days with 50 mm or more rain	31	3	1938	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1994	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1887.

Download the Data

Data for Irkutsk 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).

Irkutsk Threshold Days by Year (RSM00030710)

Key Facts for Irkutsk Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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