Mirtna Threshold Days by Year

5 fixed thresholds counted per year at Mirtna (ASN00036035): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mirtna Thresholds

Mirtna: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1950 with 35.
Mirtna: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1954 with 17.
Mirtna: days with 50 mm (1.97 in) or more of precipitation in 57 years, most in 1954 with 8.
Mirtna: days with 100 mm (3.94 in) or more of precipitation in 18 years, most in 1950 with 4.
5 fixed thresholds have at least one qualifying day at Mirtna.

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

65 years with a qualifying day

Days per year at Mirtna with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Mirtna
Year	Days	Decade average
1913	16	17.7
1914	15	17.7
1915	8	17.7
1916	20	17.7
1917	26	17.7
1918	24	17.7
1919	15	17.7
1920	21	15.9
1921	18	15.9
1922	16	15.9
1923	7	15.9
1924	27	15.9
1925	19	15.9
1926	7	15.9
1927	19	15.9
1928	15	15.9
1929	10	15.9
1930	13	14.2
1931	9	14.2
1932	9	14.2
1933	25	14.2
1934	14	14.2
1935	12	14.2
1936	19	14.2
1937	13	14.2
1938	14	14.2
1939	14	14.2
1940	24	17.6
1941	26	17.6
1942	25	17.6
1943	12	17.6
1944	20	17.6
1945	14	17.6
1946	17	17.6
1947	17	17.6
1948	8	17.6
1949	13	17.6
1950	35	21.6
1951	13	21.6
1952	16	21.6
1953	15	21.6
1954	23	21.6
1955	25	21.6
1956	28	21.6
1957	19	21.6
1958	24	21.6
1959	18	21.6
1960	24	14.5
1961	10	14.5
1962	13	14.5
1963	17	14.5
1964	19	14.5
1965	10	14.5
1966	9	14.5
1967	17	14.5
1968	18	14.5
1969	8	14.5
1970	14	19.9
1971	22	19.9
1972	12	19.9
1973	20	19.9
1974	28	19.9
1975	30	19.9
1976	17	19.9
1977	16	19.9

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

First to last qualifying date each year at Mirtna
Year	First date	Last date
1913	1913-01-06	1913-12-21
1914	1914-01-15	1914-12-28
1915	1915-01-24	1915-12-29
1916	1916-02-01	1916-12-31
1917	1917-01-01	1917-12-13
1918	1918-01-03	1918-12-17
1919	1919-01-20	1919-12-27
1920	1920-01-09	1920-12-08
1921	1921-01-02	1921-12-30
1922	1922-01-07	1922-12-26
1923	1923-03-09	1923-12-27
1924	1924-02-01	1924-12-16
1925	1925-01-08	1925-12-25
1926	1926-03-24	1926-12-26
1927	1927-01-22	1927-12-24
1928	1928-01-25	1928-12-26
1929	1929-02-18	1929-12-30
1930	1930-01-03	1930-10-11
1931	1931-01-28	1931-12-09
1932	1932-01-15	1932-12-19
1933	1933-01-03	1933-11-20
1934	1934-01-27	1934-12-28
1935	1935-02-01	1935-12-27
1936	1936-01-07	1936-12-28
1937	1937-01-02	1937-12-29
1938	1938-01-06	1938-11-29
1939	1939-02-05	1939-12-26
1940	1940-01-08	1940-12-27
1941	1941-01-01	1941-12-11
1942	1942-01-01	1942-12-29
1943	1943-01-02	1943-12-29
1944	1944-01-01	1944-12-19
1945	1945-01-13	1945-12-08
1946	1946-01-08	1946-11-16
1947	1947-01-17	1947-12-11
1948	1948-01-02	1948-12-31
1949	1949-01-08	1949-12-20
1950	1950-01-27	1950-12-21
1951	1951-01-02	1951-12-20
1952	1952-01-10	1952-11-27
1953	1953-01-02	1953-12-29
1954	1954-01-01	1954-12-13
1955	1955-01-24	1955-12-19
1956	1956-01-18	1956-12-22
1957	1957-01-09	1957-12-13
1958	1958-01-02	1958-12-21
1959	1959-01-02	1959-12-26
1960	1960-01-13	1960-12-30
1961	1961-01-04	1961-12-20
1962	1962-01-04	1962-12-27
1963	1963-01-09	1963-11-30
1964	1964-01-03	1964-12-28
1965	1965-01-25	1965-12-15
1966	1966-01-24	1966-11-08
1967	1967-01-18	1967-12-22
1968	1968-01-05	1968-12-19
1969	1969-01-10	1969-12-24
1970	1970-01-31	1970-12-30
1971	1971-01-09	1971-12-27
1972	1972-01-02	1972-11-28
1973	1973-01-14	1973-12-21
1974	1974-01-02	1974-12-30
1975	1975-01-02	1975-12-30
1976	1976-01-14	1976-12-22
1977	1977-01-06	1977-12-23

Every Fixed Threshold

Fixed thresholds at Mirtna
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	65	35	1950	16
25 mm (0.98 in): Days with 25 mm or more rain	65	17	1954	5
50 mm (1.97 in): Days with 50 mm or more rain	57	8	1954	1
100 mm (3.94 in): Days with 100 mm or more rain	18	4	1950	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1936	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

Data for Mirtna 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Mirtna Threshold Days by Year

Key Facts for Mirtna Thresholds

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

Every Fixed Threshold

Download the Data

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