Leppavirta Sorsakoski Osmajarv Threshold Days by Year (FIE00143997)

3 fixed thresholds counted per year at Leppavirta Sorsakoski Osmajarv (FIE00143997): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Leppavirta Sorsakoski Osmajarv Thresholds

Leppavirta Sorsakoski Osmajarv: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1987 with 21.
Leppavirta Sorsakoski Osmajarv: days with 25 mm (0.98 in) or more of precipitation in 15 years, most in 1966 with 3.
Leppavirta Sorsakoski Osmajarv: days with 50 mm (1.97 in) or more of precipitation in 1 years, most in 1980 with 1.
3 fixed thresholds have at least one qualifying day at Leppavirta Sorsakoski Osmajarv.

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

33 years with a qualifying day

Days per year at Leppavirta Sorsakoski Osmajarv with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1987.

Days with 10 mm (0.39 in) or more of precipitation per year at Leppavirta Sorsakoski Osmajarv
Year	Days	Decade average
1966	9	10.3
1968	11	10.3
1969	11	10.3
1970	17	11.9
1971	11	11.9
1972	13	11.9
1973	13	11.9
1974	18	11.9
1975	9	11.9
1976	7	11.9
1977	13	11.9
1978	7	11.9
1979	11	11.9
1980	16	13.2
1981	13	13.2
1982	7	13.2
1983	16	13.2
1984	10	13.2
1985	19	13.2
1986	12	13.2
1987	21	13.2
1988	11	13.2
1989	7	13.2
1990	21	13.9
1991	10	13.9
1992	12	13.9
1993	13	13.9
1994	18	13.9
1995	15	13.9
1996	13	13.9
1997	11	13.9
1998	12	13.9
1999	14	13.9

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

First to last qualifying date each year at Leppavirta Sorsakoski Osmajarv
Year	First date	Last date
1966	1966-01-30	1966-10-08
1968	1968-04-24	1968-11-03
1969	1969-07-03	1969-11-23
1970	1970-04-02	1970-11-15
1971	1971-02-24	1971-12-21
1972	1972-02-08	1972-11-10
1973	1973-04-19	1973-11-08
1974	1974-03-21	1974-12-22
1975	1975-01-17	1975-09-28
1976	1976-06-21	1976-09-15
1977	1977-02-16	1977-11-16
1978	1978-04-14	1978-09-16
1979	1979-05-07	1979-11-29
1980	1980-05-25	1980-12-15
1981	1981-02-02	1981-12-03
1982	1982-05-18	1982-11-24
1983	1983-01-13	1983-12-27
1984	1984-05-04	1984-10-30
1985	1985-04-02	1985-12-21
1986	1986-05-09	1986-12-05
1987	1987-05-04	1987-12-06
1988	1988-04-17	1988-10-27
1989	1989-07-11	1989-10-21
1990	1990-01-17	1990-11-17
1991	1991-06-14	1991-12-26
1992	1992-04-03	1992-11-06
1993	1993-06-04	1993-12-19
1994	1994-03-07	1994-10-15
1995	1995-03-27	1995-11-18
1996	1996-04-17	1996-11-19
1997	1997-04-30	1997-12-06
1998	1998-01-10	1998-10-18
1999	1999-02-04	1999-12-12

Every Fixed Threshold

Fixed thresholds at Leppavirta Sorsakoski Osmajarv
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	33	21	1987	14
25 mm (0.98 in): Days with 25 mm or more rain	15	3	1966	2
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1980	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.

Download the Data

Data for Leppavirta Sorsakoski Osmajarv 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).

Leppavirta Sorsakoski Osmajarv Threshold Days by Year (FIE00143997)

Key Facts for Leppavirta Sorsakoski Osmajarv Thresholds

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

Every Fixed Threshold

Download the Data

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