Built 2026-10-19 (19 October 2026)

Mustasaari Sulva Forsbacken Threshold Days by Year (FIE00144277)

3 fixed thresholds counted per year at Mustasaari Sulva Forsbacken (FIE00144277): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mustasaari Sulva Forsbacken Thresholds

  • Mustasaari Sulva Forsbacken: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1979 with 18.
  • Mustasaari Sulva Forsbacken: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1967 with 3.
  • Mustasaari Sulva Forsbacken: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1967 with 1.
  • 3 fixed thresholds have at least one qualifying day at Mustasaari Sulva Forsbacken.
41 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mustasaari Sulva Forsbacken Days per year at Mustasaari Sulva Forsbacken with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1979. 051015201965: 111966: 111967: 121968: 111969: 81970: 131971: 121972: 141973: 171974: 111975: 81976: 71977: 101978: 51979: 181980: 81981: 171982: 71983: 171984: 81985: 121986: 151987: 101988: 141991: 111992: 111993: 181994: 121995: 151996: 131997: 161998: 171999: 122000: 162001: 162003: 92004: 172005: 122006: 112007: 172008: 12196519701975198019851992199720032008
Days per year at Mustasaari Sulva Forsbacken with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1979.
Days with 10 mm (0.39 in) or more of precipitation per year at Mustasaari Sulva Forsbacken
YearDaysDecade average
19651110.6
19661110.6
19671210.6
19681110.6
1969810.6
19701311.5
19711211.5
19721411.5
19731711.5
19741111.5
1975811.5
1976711.5
19771011.5
1978511.5
19791811.5
1980812
19811712
1982712
19831712
1984812
19851212
19861512
19871012
19881412
19911113.9
19921113.9
19931813.9
19941213.9
19951513.9
19961313.9
19971613.9
19981713.9
19991213.9
20001613.8
20011613.8
2003913.8
20041713.8
20051213.8
20061113.8
20071713.8
20081213.8
First to last qualifying date each year at Mustasaari Sulva Forsbacken For each year, a bar from the first to the last day at Mustasaari Sulva Forsbacken meeting 10 mm (0.39 in). 1965: 19 June 1965 to 18 December 19651966: 26 June 1966 to 30 December 19661967: 12 May 1967 to 28 December 19671968: 1 February 1968 to 29 October 19681969: 13 April 1969 to 29 September 19691970: 17 March 1970 to 19 December 19701971: 15 January 1971 to 21 December 19711972: 14 February 1972 to 7 December 19721973: 22 March 1973 to 17 December 19731974: 10 June 1974 to 17 November 19741975: 12 January 1975 to 28 September 19751976: 26 June 1976 to 12 November 19761977: 2 April 1977 to 11 October 19771978: 7 June 1978 to 14 November 19781979: 29 April 1979 to 28 December 19791980: 28 June 1980 to 4 December 19801981: 25 June 1981 to 4 December 19811982: 7 April 1982 to 28 November 19821983: 5 January 1983 to 30 December 19831984: 19 June 1984 to 24 November 19841985: 2 April 1985 to 8 October 19851986: 23 March 1986 to 5 December 19861987: 13 February 1987 to 29 December 19871988: 11 January 1988 to 9 October 19881991: 2 May 1991 to 30 September 19911992: 14 June 1992 to 17 December 19921993: 5 March 1993 to 10 October 19931994: 24 March 1994 to 10 December 19941995: 1 January 1995 to 19 December 19951996: 5 May 1996 to 12 December 19961997: 26 March 1997 to 13 November 19971998: 7 February 1998 to 23 October 19981999: 16 January 1999 to 30 November 19992000: 3 March 2000 to 30 November 20002001: 1 May 2001 to 31 October 20012003: 5 June 2003 to 27 November 20032004: 17 May 2004 to 22 December 20042005: 8 January 2005 to 28 November 20052006: 30 March 2006 to 11 December 20062007: 9 January 2007 to 29 December 20072008: 12 January 2008 to 31 October 20081965197119771983199119972004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mustasaari Sulva Forsbacken meeting 10 mm (0.39 in).
First to last qualifying date each year at Mustasaari Sulva Forsbacken
YearFirst dateLast date
19651965-06-191965-12-18
19661966-06-261966-12-30
19671967-05-121967-12-28
19681968-02-011968-10-29
19691969-04-131969-09-29
19701970-03-171970-12-19
19711971-01-151971-12-21
19721972-02-141972-12-07
19731973-03-221973-12-17
19741974-06-101974-11-17
19751975-01-121975-09-28
19761976-06-261976-11-12
19771977-04-021977-10-11
19781978-06-071978-11-14
19791979-04-291979-12-28
19801980-06-281980-12-04
19811981-06-251981-12-04
19821982-04-071982-11-28
19831983-01-051983-12-30
19841984-06-191984-11-24
19851985-04-021985-10-08
19861986-03-231986-12-05
19871987-02-131987-12-29
19881988-01-111988-10-09
19911991-05-021991-09-30
19921992-06-141992-12-17
19931993-03-051993-10-10
19941994-03-241994-12-10
19951995-01-011995-12-19
19961996-05-051996-12-12
19971997-03-261997-11-13
19981998-02-071998-10-23
19991999-01-161999-11-30
20002000-03-032000-11-30
20012001-05-012001-10-31
20032003-06-052003-11-27
20042004-05-172004-12-22
20052005-01-082005-11-28
20062006-03-302006-12-11
20072007-01-092007-12-29
20082008-01-122008-10-31

Every Fixed Threshold

Fixed thresholds at Mustasaari Sulva Forsbacken
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4118197912
25 mm (0.98 in): Days with 25 mm or more rain23319671
50 mm (1.97 in): Days with 50 mm or more rain2119671

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 Mustasaari Sulva Forsbacken 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).