Roros Threshold Days by Year

9 fixed thresholds counted per year at Roros (NOE00109613): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roros Thresholds

Roros: days with 10 mm (0.39 in) or more of precipitation in 107 years, most in 1896 with 17.
Roros: nights with a minimum temperature at or below 0 C (32 F) in 92 years, most in 1923 with 252.
Roros: nights with a minimum temperature at or below -10 C (14 F) in 92 years, most in 1941 with 128.
Roros: nights with a minimum temperature at or below -20 C (-4 F) in 92 years, most in 1941 with 65.
9 fixed thresholds have at least one qualifying day at Roros.

Nights at or below 0 C (32 F)

92 years with a qualifying day

Days per year at Roros with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 252 in 1923.

Nights at or below 0 C (32 F) per year at Roros
Year	Days	Decade average
1911	229	232.2
1912	234	232.2
1913	220	232.2
1914	232	232.2
1915	248	232.2
1916	232	232.2
1917	239	232.2
1918	225	232.2
1919	231	232.2
1920	213	229.5
1921	219	229.5
1922	231	229.5
1923	252	229.5
1924	236	229.5
1925	234	229.5
1926	222	229.5
1927	231	229.5
1928	240	229.5
1929	217	229.5
1930	206	214.8
1931	215	214.8
1932	216	214.8
1933	213	214.8
1934	211	214.8
1935	213	214.8
1936	247	214.8
1937	188	214.8
1938	198	214.8
1939	241	214.8
1940	239	221.3
1941	234	221.3
1942	227	221.3
1943	210	221.3
1944	229	221.3
1945	208	221.3
1946	210	221.3
1947	227	221.3
1948	223	221.3
1949	206	221.3
1950	224	225.4
1951	238	225.4
1952	236	225.4
1953	192	225.4
1954	235	225.4
1955	243	225.4
1956	228	225.4
1957	232	225.4
1958	221	225.4
1959	205	225.4
1960	221	221.1
1961	195	221.1
1962	223	221.1
1963	204	221.1
1964	224	221.1
1965	226	221.1
1966	226	221.1
1967	226	221.1
1968	233	221.1
1969	233	221.1
1970	213	220.7
1971	227	220.7
1972	231	220.7
1973	219	220.7
1974	217	220.7
1975	215	220.7
1976	230	220.7
1977	220	220.7
1978	218	220.7
1979	217	220.7
1980	220	210.6
1981	215	210.6
1982	223	210.6
1983	199	210.6
1984	197	210.6
1985	219	210.6
1986	212	210.6
1987	202	210.6
1988	213	210.6
1989	206	210.6
1990	202	217.4
1991	206	217.4
1992	211	217.4
1993	220	217.4
1994	232	217.4
1995	223	217.4
1996	236	217.4
1997	223	217.4
1998	218	217.4
1999	203	217.4
2000	180	198.7
2001	208	198.7
2002	208	198.7

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

First to last qualifying date each year at Roros
Year	First date	Last date
1911	1911-01-01	1911-12-31
1912	1912-01-01	1912-12-31
1913	1913-01-01	1913-12-31
1914	1914-01-01	1914-12-31
1915	1915-01-01	1915-12-31
1916	1916-01-01	1916-12-31
1917	1917-01-01	1917-12-31
1918	1918-01-01	1918-12-31
1919	1919-01-01	1919-12-31
1920	1920-01-01	1920-12-31
1921	1921-01-01	1921-12-31
1922	1922-01-01	1922-12-31
1923	1923-01-01	1923-12-31
1924	1924-01-01	1924-12-31
1925	1925-01-01	1925-12-31
1926	1926-01-01	1926-12-31
1927	1927-01-01	1927-12-31
1928	1928-01-01	1928-12-31
1929	1929-01-01	1929-12-31
1930	1930-01-01	1930-12-31
1931	1931-01-01	1931-12-31
1932	1932-01-01	1932-12-31
1933	1933-01-01	1933-12-31
1934	1934-01-01	1934-12-31
1935	1935-01-01	1935-12-31
1936	1936-01-01	1936-12-31
1937	1937-01-02	1937-12-31
1938	1938-01-01	1938-12-31
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	1943-12-31
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
1959	1959-01-01	1959-12-31
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	1972-12-30
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

Every Fixed Threshold

Fixed thresholds at Roros
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
0 C (32 F): Ice days (max	48	140	1966	110
0 C (32 F): Frost days (min	92	252	1923	208
-10 C (14 F): Days with min	92	128	1941	86
-20 C (-4 F): Days with min	92	65	1941	36
-30 C (-22 F): Days with min	88	36	1942	4
-40 C (-40 F): Days with min	25	5	1913	1
10 mm (0.39 in): Days with 10 mm or more rain	107	17	1896	5
25 mm (0.98 in): Days with 25 mm or more rain	43	4	1896	1
50 mm (1.97 in): Days with 50 mm or more rain	5	1	1896	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

Data for Roros 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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

Roros Threshold Days by Year

Key Facts for Roros Thresholds

Nights at or below 0 C (32 F)

Every Fixed Threshold

Download the Data

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