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

Isfana Threshold Days by Year (KG000038722)

3 fixed thresholds counted per year at Isfana (KG000038722): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Isfana Thresholds

  • Isfana: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1981 with 19.
  • Isfana: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1978 with 5.
  • Isfana: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1958 with 1.
  • 3 fixed thresholds have at least one qualifying day at Isfana.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Isfana Days per year at Isfana with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1981. 051015201958: 141959: 71960: 131961: 121962: 101963: 171964: 141965: 101977: 71978: 111979: 151980: 111981: 191982: 191983: 161984: 121985: 101986: 71988: 161989: 131990: 121958196119641978198119841988
Days per year at Isfana with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1981.
Days with 10 mm (0.39 in) or more of precipitation per year at Isfana
YearDaysDecade average
19581410.5
1959710.5
19601312.7
19611212.7
19621012.7
19631712.7
19641412.7
19651012.7
1977711
19781111
19791511
19801113.7
19811913.7
19821913.7
19831613.7
19841213.7
19851013.7
1986713.7
19881613.7
19891313.7
19901212
First to last qualifying date each year at Isfana For each year, a bar from the first to the last day at Isfana meeting 10 mm (0.39 in). 1958: 2 February 1958 to 10 October 19581959: 2 February 1959 to 27 November 19591960: 7 February 1960 to 5 November 19601961: 23 January 1961 to 15 November 19611962: 23 February 1962 to 16 November 19621963: 5 February 1963 to 14 November 19631964: 17 February 1964 to 29 November 19641965: 16 January 1965 to 10 November 19651977: 17 April 1977 to 25 December 19771978: 9 March 1978 to 24 December 19781979: 8 January 1979 to 2 December 19791980: 15 March 1980 to 13 December 19801981: 12 February 1981 to 24 November 19811982: 4 March 1982 to 11 November 19821983: 7 January 1983 to 16 December 19831984: 15 February 1984 to 16 December 19841985: 24 February 1985 to 7 December 19851986: 15 April 1986 to 4 December 19861988: 3 January 1988 to 29 December 19881989: 19 January 1989 to 18 December 19891990: 12 February 1990 to 14 November 19901958196119641978198119841988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Isfana meeting 10 mm (0.39 in).
First to last qualifying date each year at Isfana
YearFirst dateLast date
19581958-02-021958-10-10
19591959-02-021959-11-27
19601960-02-071960-11-05
19611961-01-231961-11-15
19621962-02-231962-11-16
19631963-02-051963-11-14
19641964-02-171964-11-29
19651965-01-161965-11-10
19771977-04-171977-12-25
19781978-03-091978-12-24
19791979-01-081979-12-02
19801980-03-151980-12-13
19811981-02-121981-11-24
19821982-03-041982-11-11
19831983-01-071983-12-16
19841984-02-151984-12-16
19851985-02-241985-12-07
19861986-04-151986-12-04
19881988-01-031988-12-29
19891989-01-191989-12-18
19901990-02-121990-11-14

Every Fixed Threshold

Fixed thresholds at Isfana
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2119198112
25 mm (0.98 in): Days with 25 mm or more rain16519782
50 mm (1.97 in): Days with 50 mm or more rain3119581

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Isfana 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).