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Built 2026-10-19 (19 October 2026)

Koski Sorvasto Threshold Days by Year (FIE00142666)

3 fixed thresholds counted per year at Koski Sorvasto (FIE00142666): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Koski Sorvasto Thresholds

  • Koski Sorvasto: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1986 with 20.
  • Koski Sorvasto: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1967 with 3.
  • Koski Sorvasto: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1968 with 1.
  • 3 fixed thresholds have at least one qualifying day at Koski Sorvasto.
43 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Koski Sorvasto Days per year at Koski Sorvasto with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1986. 051015201965: 91966: 151967: 91968: 111969: 131970: 61971: 101972: 151973: 111974: 181975: 51976: 81977: 181978: 121979: 131980: 181981: 141982: 171983: 151984: 181985: 81986: 201987: 131988: 151989: 111990: 121991: 121992: 101993: 151994: 141995: 121996: 141997: 121998: 121999: 142000: 182001: 122002: 142003: 92004: 192005: 162006: 102007: 14196519701975198019851990199520002005
Days per year at Koski Sorvasto with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1986.
Days with 10 mm (0.39 in) or more of precipitation per year at Koski Sorvasto
YearDaysDecade average
1965911.4
19661511.4
1967911.4
19681111.4
19691311.4
1970611.6
19711011.6
19721511.6
19731111.6
19741811.6
1975511.6
1976811.6
19771811.6
19781211.6
19791311.6
19801814.9
19811414.9
19821714.9
19831514.9
19841814.9
1985814.9
19862014.9
19871314.9
19881514.9
19891114.9
19901212.7
19911212.7
19921012.7
19931512.7
19941412.7
19951212.7
19961412.7
19971212.7
19981212.7
19991412.7
20001814
20011214
20021414
2003914
20041914
20051614
20061014
20071414
First to last qualifying date each year at Koski Sorvasto For each year, a bar from the first to the last day at Koski Sorvasto meeting 10 mm (0.39 in). 1965: 17 April 1965 to 1 December 19651966: 24 March 1966 to 24 December 19661967: 18 May 1967 to 17 October 19671968: 21 January 1968 to 31 December 19681969: 29 January 1969 to 23 November 19691970: 2 July 1970 to 20 October 19701971: 7 January 1971 to 21 December 19711972: 27 March 1972 to 1 November 19721973: 5 February 1973 to 29 September 19731974: 15 January 1974 to 22 December 19741975: 15 March 1975 to 4 September 19751976: 1 June 1976 to 1 December 19761977: 12 April 1977 to 21 November 19771978: 13 May 1978 to 19 November 19781979: 7 July 1979 to 17 December 19791980: 3 June 1980 to 21 November 19801981: 13 March 1981 to 11 November 19811982: 9 April 1982 to 20 December 19821983: 13 January 1983 to 30 December 19831984: 3 January 1984 to 28 November 19841985: 2 April 1985 to 19 December 19851986: 16 May 1986 to 1 December 19861987: 12 May 1987 to 17 October 19871988: 17 April 1988 to 30 December 19881989: 15 January 1989 to 19 December 19891990: 7 February 1990 to 17 November 19901991: 20 January 1991 to 15 November 19911992: 20 June 1992 to 11 December 19921993: 22 January 1993 to 19 December 19931994: 8 March 1994 to 31 December 19941995: 8 January 1995 to 27 October 19951996: 15 February 1996 to 12 November 19961997: 26 March 1997 to 13 November 19971998: 5 May 1998 to 20 October 19981999: 4 February 1999 to 12 December 19992000: 29 January 2000 to 14 November 20002001: 15 April 2001 to 31 October 20012002: 24 January 2002 to 26 November 20022003: 1 May 2003 to 8 October 20032004: 31 January 2004 to 30 December 20042005: 8 January 2005 to 14 November 20052006: 26 May 2006 to 11 December 20062007: 18 January 2007 to 27 December 200719651971197719831989199520012007JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Koski Sorvasto meeting 10 mm (0.39 in).
First to last qualifying date each year at Koski Sorvasto
YearFirst dateLast date
19651965-04-171965-12-01
19661966-03-241966-12-24
19671967-05-181967-10-17
19681968-01-211968-12-31
19691969-01-291969-11-23
19701970-07-021970-10-20
19711971-01-071971-12-21
19721972-03-271972-11-01
19731973-02-051973-09-29
19741974-01-151974-12-22
19751975-03-151975-09-04
19761976-06-011976-12-01
19771977-04-121977-11-21
19781978-05-131978-11-19
19791979-07-071979-12-17
19801980-06-031980-11-21
19811981-03-131981-11-11
19821982-04-091982-12-20
19831983-01-131983-12-30
19841984-01-031984-11-28
19851985-04-021985-12-19
19861986-05-161986-12-01
19871987-05-121987-10-17
19881988-04-171988-12-30
19891989-01-151989-12-19
19901990-02-071990-11-17
19911991-01-201991-11-15
19921992-06-201992-12-11
19931993-01-221993-12-19
19941994-03-081994-12-31
19951995-01-081995-10-27
19961996-02-151996-11-12
19971997-03-261997-11-13
19981998-05-051998-10-20
19991999-02-041999-12-12
20002000-01-292000-11-14
20012001-04-152001-10-31
20022002-01-242002-11-26
20032003-05-012003-10-08
20042004-01-312004-12-30
20052005-01-082005-11-14
20062006-05-262006-12-11
20072007-01-182007-12-27

Every Fixed Threshold

Fixed thresholds at Koski Sorvasto
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4320198614
25 mm (0.98 in): Days with 25 mm or more rain27319671
50 mm (1.97 in): Days with 50 mm or more rain4119681

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

  • Data for Koski Sorvasto 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 . Last revised (2025-12-31).