Built 2026-10-19 (19 October 2026)

Koskats Threshold Days by Year (SWE00140734)

3 fixed thresholds counted per year at Koskats (SWE00140734): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Koskats Thresholds

  • Koskats: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1993 with 24.
  • Koskats: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1987 with 5.
  • Koskats: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1960 with 1.
  • 3 fixed thresholds have at least one qualifying day at Koskats.
48 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Koskats Days per year at Koskats with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1993. 01020301945: 81946: 201947: 91948: 91949: 111950: 151951: 131952: 201953: 121954: 171955: 151956: 111957: 121958: 111959: 71960: 111961: 151962: 111963: 81964: 121965: 141967: 171968: 111969: 101970: 81971: 101972: 141973: 111974: 231975: 81976: 61977: 161978: 151979: 141980: 81981: 181982: 141983: 161984: 161985: 141986: 71987: 211988: 131989: 151990: 131991: 151992: 101993: 241945195019551960196519711976198119861991
Days per year at Koskats with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1993.
Days with 10 mm (0.39 in) or more of precipitation per year at Koskats
YearDaysDecade average
1945811.4
19462011.4
1947911.4
1948911.4
19491111.4
19501513.3
19511313.3
19522013.3
19531213.3
19541713.3
19551513.3
19561113.3
19571213.3
19581113.3
1959713.3
19601112.1
19611512.1
19621112.1
1963812.1
19641212.1
19651412.1
19671712.1
19681112.1
19691012.1
1970812.5
19711012.5
19721412.5
19731112.5
19742312.5
1975812.5
1976612.5
19771612.5
19781512.5
19791412.5
1980814.2
19811814.2
19821414.2
19831614.2
19841614.2
19851414.2
1986714.2
19872114.2
19881314.2
19891514.2
19901315.5
19911515.5
19921015.5
19932415.5
First to last qualifying date each year at Koskats For each year, a bar from the first to the last day at Koskats meeting 10 mm (0.39 in). 1945: 1 March 1945 to 23 November 19451946: 17 April 1946 to 14 October 19461947: 24 April 1947 to 12 December 19471948: 29 January 1948 to 16 October 19481949: 13 March 1949 to 8 December 19491950: 17 February 1950 to 1 December 19501951: 8 April 1951 to 28 December 19511952: 6 February 1952 to 29 October 19521953: 25 March 1953 to 3 October 19531954: 6 March 1954 to 27 December 19541955: 10 January 1955 to 28 December 19551956: 1 June 1956 to 3 December 19561957: 26 January 1957 to 1 November 19571958: 5 March 1958 to 28 October 19581959: 10 January 1959 to 31 December 19591960: 14 March 1960 to 12 December 19601961: 7 February 1961 to 25 October 19611962: 5 January 1962 to 16 November 19621963: 3 May 1963 to 30 December 19631964: 14 February 1964 to 2 December 19641965: 11 January 1965 to 31 October 19651967: 18 May 1967 to 14 November 19671968: 3 April 1968 to 4 November 19681969: 15 May 1969 to 2 December 19691970: 18 April 1970 to 19 October 19701971: 17 February 1971 to 21 December 19711972: 13 April 1972 to 28 November 19721973: 12 February 1973 to 16 December 19731974: 8 February 1974 to 20 December 19741975: 21 May 1975 to 18 September 19751976: 19 January 1976 to 7 November 19761977: 26 January 1977 to 17 October 19771978: 9 June 1978 to 16 November 19781979: 17 May 1979 to 29 November 19791980: 9 May 1980 to 18 October 19801981: 23 March 1981 to 13 December 19811982: 6 May 1982 to 20 December 19821983: 26 March 1983 to 31 December 19831984: 13 January 1984 to 28 November 19841985: 28 March 1985 to 7 October 19851986: 25 January 1986 to 8 November 19861987: 14 February 1987 to 19 November 19871988: 1 January 1988 to 28 December 19881989: 8 January 1989 to 21 October 19891990: 15 January 1990 to 27 December 19901991: 2 January 1991 to 4 November 19911992: 26 April 1992 to 3 December 19921993: 8 May 1993 to 20 December 199319451951195719631970197619821988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Koskats meeting 10 mm (0.39 in).
First to last qualifying date each year at Koskats
YearFirst dateLast date
19451945-03-011945-11-23
19461946-04-171946-10-14
19471947-04-241947-12-12
19481948-01-291948-10-16
19491949-03-131949-12-08
19501950-02-171950-12-01
19511951-04-081951-12-28
19521952-02-061952-10-29
19531953-03-251953-10-03
19541954-03-061954-12-27
19551955-01-101955-12-28
19561956-06-011956-12-03
19571957-01-261957-11-01
19581958-03-051958-10-28
19591959-01-101959-12-31
19601960-03-141960-12-12
19611961-02-071961-10-25
19621962-01-051962-11-16
19631963-05-031963-12-30
19641964-02-141964-12-02
19651965-01-111965-10-31
19671967-05-181967-11-14
19681968-04-031968-11-04
19691969-05-151969-12-02
19701970-04-181970-10-19
19711971-02-171971-12-21
19721972-04-131972-11-28
19731973-02-121973-12-16
19741974-02-081974-12-20
19751975-05-211975-09-18
19761976-01-191976-11-07
19771977-01-261977-10-17
19781978-06-091978-11-16
19791979-05-171979-11-29
19801980-05-091980-10-18
19811981-03-231981-12-13
19821982-05-061982-12-20
19831983-03-261983-12-31
19841984-01-131984-11-28
19851985-03-281985-10-07
19861986-01-251986-11-08
19871987-02-141987-11-19
19881988-01-011988-12-28
19891989-01-081989-10-21
19901990-01-151990-12-27
19911991-01-021991-11-04
19921992-04-261992-12-03
19931993-05-081993-12-20

Every Fixed Threshold

Fixed thresholds at Koskats
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4824199324
25 mm (0.98 in): Days with 25 mm or more rain37519871
50 mm (1.97 in): Days with 50 mm or more rain3119601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

  • Data for Koskats 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).