Vyartsilya Threshold Days by Year (RSM00022707)

3 fixed thresholds counted per year at Vyartsilya (RSM00022707): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Vyartsilya Thresholds

Vyartsilya: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1981 with 22.
Vyartsilya: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1954 with 4.
Vyartsilya: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1961 with 1.
3 fixed thresholds have at least one qualifying day at Vyartsilya.

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

38 years with a qualifying day

Days per year at Vyartsilya with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1981.

Days with 10 mm (0.39 in) or more of precipitation per year at Vyartsilya
Year	Days	Decade average
1946	4	7.8
1947	7	7.8
1948	9	7.8
1949	11	7.8
1950	10	10.7
1951	5	10.7
1952	12	10.7
1953	9	10.7
1954	21	10.7
1955	10	10.7
1956	5	10.7
1957	15	10.7
1958	10	10.7
1959	10	10.7
1960	8	10.2
1961	17	10.2
1962	19	10.2
1963	2	10.2
1964	6	10.2
1965	9	10.2
1977	11	10.5
1978	10	10.5
1980	11	15.4
1981	22	15.4
1982	14	15.4
1983	13	15.4
1984	15	15.4
1985	17	15.4
1986	14	15.4
1987	19	15.4
1988	14	15.4
1989	15	15.4
1990	8	12
1991	13	12
1992	11	12
1993	16	12
1994	18	12
1995	6	12

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

First to last qualifying date each year at Vyartsilya
Year	First date	Last date
1946	1946-05-15	1946-09-07
1947	1947-06-08	1947-07-28
1948	1948-05-08	1948-10-22
1949	1949-01-09	1949-10-27
1950	1950-04-03	1950-11-14
1951	1951-04-03	1951-09-20
1952	1952-06-22	1952-11-10
1953	1953-07-06	1953-10-04
1954	1954-01-03	1954-11-07
1955	1955-04-27	1955-10-19
1956	1956-08-20	1956-10-02
1957	1957-05-01	1957-12-21
1958	1958-03-05	1958-12-09
1959	1959-07-04	1959-12-19
1960	1960-06-15	1960-10-12
1961	1961-01-31	1961-11-03
1962	1962-04-28	1962-11-23
1963	1963-05-29	1963-07-15
1964	1964-06-12	1964-12-14
1965	1965-05-14	1965-10-07
1977	1977-03-26	1977-10-29
1978	1978-04-13	1978-11-15
1980	1980-06-25	1980-12-16
1981	1981-03-10	1981-12-25
1982	1982-04-09	1982-12-21
1983	1983-03-29	1983-12-28
1984	1984-01-04	1984-10-07
1985	1985-04-03	1985-12-27
1986	1986-04-20	1986-12-06
1987	1987-06-14	1987-12-07
1988	1988-04-21	1988-12-09
1989	1989-01-15	1989-10-22
1990	1990-04-03	1990-10-10
1991	1991-06-03	1991-11-16
1992	1992-01-11	1992-09-28
1993	1993-04-18	1993-12-05
1994	1994-03-09	1994-12-11
1995	1995-04-17	1995-11-18

Every Fixed Threshold

Fixed thresholds at Vyartsilya
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	38	22	1981	6
25 mm (0.98 in): Days with 25 mm or more rain	21	4	1954	2
50 mm (1.97 in): Days with 50 mm or more rain	2	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.

Download the Data

Data for Vyartsilya 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).

Vyartsilya Threshold Days by Year (RSM00022707)

Key Facts for Vyartsilya Thresholds

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

Every Fixed Threshold

Download the Data

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