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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Kos-Istek Threshold Days by Year (KZ000035234)

12 fixed thresholds counted per year at Kos-Istek (KZ000035234): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kos-Istek Thresholds

  • Kos-Istek: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1973 with 13.
  • Kos-Istek: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1973 with 3.
  • Kos-Istek: days with a maximum temperature at or above 30 C (86 F) in 2 years, most in 2022 with 44.
  • Kos-Istek: days with a maximum temperature at or above 90 F (32.2 C) in 2 years, most in 2022 with 18.
  • 12 fixed thresholds have at least one qualifying day at Kos-Istek.
22 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Kos-Istek Days per year at Kos-Istek with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1973. 0510151966: 111967: 71968: 51969: 71970: 101971: 71972: 81973: 131974: 91975: 81976: 31978: 61979: 61981: 121982: 121983: 41984: 61985: 61986: 51987: 91989: 71991: 119661969197219751979198319861991
Days per year at Kos-Istek with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Kos-Istek
YearDaysDecade average
1966117.5
196777.5
196857.5
196977.5
1970107.8
197177.8
197287.8
1973137.8
197497.8
197587.8
197637.8
197867.8
197967.8
1981127.6
1982127.6
198347.6
198467.6
198567.6
198657.6
198797.6
198977.6
199111
First to last qualifying date each year at Kos-Istek For each year, a bar from the first to the last day at Kos-Istek meeting 10 mm (0.39 in). 1966: 3 February 1966 to 18 October 19661967: 29 May 1967 to 7 September 19671968: 7 January 1968 to 18 September 19681969: 3 April 1969 to 25 December 19691970: 20 March 1970 to 3 November 19701971: 15 February 1971 to 19 November 19711972: 5 January 1972 to 4 November 19721973: 9 May 1973 to 11 November 19731974: 10 April 1974 to 19 September 19741975: 9 January 1975 to 29 December 19751976: 22 May 1976 to 13 October 19761978: 8 April 1978 to 31 December 19781979: 16 February 1979 to 2 November 19791981: 12 March 1981 to 15 November 19811982: 4 January 1982 to 11 December 19821983: 16 May 1983 to 3 November 19831984: 30 May 1984 to 30 October 19841985: 13 February 1985 to 2 October 19851986: 8 February 1986 to 28 October 19861987: 21 April 1987 to 23 September 19871989: 12 May 1989 to 21 November 19891991: 14 July 1991 to 14 July 199119661969197219751979198319861991JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Kos-Istek meeting 10 mm (0.39 in).
First to last qualifying date each year at Kos-Istek
YearFirst dateLast date
19661966-02-031966-10-18
19671967-05-291967-09-07
19681968-01-071968-09-18
19691969-04-031969-12-25
19701970-03-201970-11-03
19711971-02-151971-11-19
19721972-01-051972-11-04
19731973-05-091973-11-11
19741974-04-101974-09-19
19751975-01-091975-12-29
19761976-05-221976-10-13
19781978-04-081978-12-31
19791979-02-161979-11-02
19811981-03-121981-11-15
19821982-01-041982-12-11
19831983-05-161983-11-03
19841984-05-301984-10-30
19851985-02-131985-10-02
19861986-02-081986-10-28
19871987-04-211987-09-23
19891989-05-121989-11-21
19911991-07-141991-07-14

Every Fixed Threshold

Fixed thresholds at Kos-Istek
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days244202216
35 C (95 F): Days1620226
90 F (32.2 C): Days21820225
0 C (32 F): Ice days (max2109202283
0 C (32 F): Frost days (min11502025150
-10 C (14 F): Days with min160202560
-20 C (-4 F): Days with min119202519
-30 C (-22 F): Days with min1320253
20 C (68 F): Tropical nights (min1220252
10 mm (0.39 in): Days with 10 mm or more rain221319731
25 mm (0.98 in): Days with 25 mm or more rain18319732
50 mm (1.97 in): Days with 50 mm or more rain1119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2022.

Download the Data

  • Data for Kos-Istek 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).