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

Ostrov Chetyrehstol Threshold Days by Year (RSM00021965)

7 fixed thresholds counted per year at Ostrov Chetyrehstol (RSM00021965): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ostrov Chetyrehstol Thresholds

  • Ostrov Chetyrehstol: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1938 with 7.
  • 7 fixed thresholds have at least one qualifying day at Ostrov Chetyrehstol.
23 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Ostrov Chetyrehstol Days per year at Ostrov Chetyrehstol with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 7 in 1938. 024681937: 11938: 71939: 41940: 11942: 21944: 21945: 21946: 11949: 21950: 51952: 11953: 11954: 31955: 11956: 11959: 11960: 21962: 31979: 11980: 21981: 11990: 21991: 119371940194519501954195919791990
Days per year at Ostrov Chetyrehstol with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 7 in 1938.
Days with 10 mm (0.39 in) or more of precipitation per year at Ostrov Chetyrehstol
YearDaysDecade average
193714
193874
193944
194011.7
194221.7
194421.7
194521.7
194611.7
194921.7
195051.9
195211.9
195311.9
195431.9
195511.9
195611.9
195911.9
196022.5
196232.5
197911
198021.5
198111.5
199021.5
199111.5
First to last qualifying date each year at Ostrov Chetyrehstol For each year, a bar from the first to the last day at Ostrov Chetyrehstol meeting 10 mm (0.39 in). 1937: 12 July 1937 to 12 July 19371938: 2 July 1938 to 27 December 19381939: 11 February 1939 to 25 April 19391940: 2 August 1940 to 2 August 19401942: 17 July 1942 to 14 August 19421944: 9 July 1944 to 30 July 19441945: 28 June 1945 to 29 July 19451946: 18 August 1946 to 18 August 19461949: 28 January 1949 to 8 June 19491950: 16 January 1950 to 22 July 19501952: 4 July 1952 to 4 July 19521953: 18 July 1953 to 18 July 19531954: 28 June 1954 to 24 July 19541955: 23 July 1955 to 23 July 19551956: 6 July 1956 to 6 July 19561959: 17 August 1959 to 17 August 19591960: 23 June 1960 to 18 August 19601962: 27 July 1962 to 20 August 19621979: 30 July 1979 to 30 July 19791980: 27 July 1980 to 28 July 19801981: 27 July 1981 to 27 July 19811990: 22 July 1990 to 30 August 19901991: 1 September 1991 to 1 September 199119371940194519501954195919791990JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ostrov Chetyrehstol meeting 10 mm (0.39 in).
First to last qualifying date each year at Ostrov Chetyrehstol
YearFirst dateLast date
19371937-07-121937-07-12
19381938-07-021938-12-27
19391939-02-111939-04-25
19401940-08-021940-08-02
19421942-07-171942-08-14
19441944-07-091944-07-30
19451945-06-281945-07-29
19461946-08-181946-08-18
19491949-01-281949-06-08
19501950-01-161950-07-22
19521952-07-041952-07-04
19531953-07-181953-07-18
19541954-06-281954-07-24
19551955-07-231955-07-23
19561956-07-061956-07-06
19591959-08-171959-08-17
19601960-06-231960-08-18
19621962-07-271962-08-20
19791979-07-301979-07-30
19801980-07-271980-07-28
19811981-07-271981-07-27
19901990-07-221990-08-30
19911991-09-011991-09-01

Every Fixed Threshold

Fixed thresholds at Ostrov Chetyrehstol
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Frost days (min20n/a327
-10 C (14 F): Days with min20n/a206
-20 C (-4 F): Days with min20n/a177
-30 C (-22 F): Days with min20n/a88
-40 C (-40 F): Days with min20n/a4
10 mm (0.39 in): Days with 10 mm or more rain23719381
25 mm (0.98 in): Days with 25 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1974.

Download the Data

  • Data for Ostrov Chetyrehstol 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).