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

Ostrovnoe Threshold Days by Year (RSM00025138)

12 fixed thresholds counted per year at Ostrovnoe (RSM00025138): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ostrovnoe Thresholds

  • Ostrovnoe: days with a maximum temperature at or below 0 C (32 F) in 80 years, most in 1958 with 227.
  • Ostrovnoe: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 1986 with 283.
  • Ostrovnoe: nights with a minimum temperature at or below -10 C (14 F) in 79 years, most in 1958 with 228.
  • Ostrovnoe: nights with a minimum temperature at or below -20 C (-4 F) in 79 years, most in 1958 with 187.
  • 12 fixed thresholds have at least one qualifying day at Ostrovnoe.
40 years with a qualifying day
Days at or above 30 C (86 F) per year at Ostrovnoe Days per year at Ostrovnoe with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 9 in 1991. 0358101936: 31941: 11952: 21953: 11956: 11957: 21960: 21966: 21969: 31971: 21973: 11974: 11975: 21976: 21977: 31981: 41982: 11987: 21989: 51991: 91992: 21993: 61994: 21996: 11998: 12000: 22001: 12002: 32003: 72005: 22006: 22007: 42008: 12010: 82013: 22014: 22015: 52016: 22018: 12025: 11936195619691975198219921998200320082015
Days per year at Ostrovnoe with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 9 in 1991.
Days at or above 30 C (86 F) per year at Ostrovnoe
YearDaysDecade average
193633
194111
195221.5
195311.5
195611.5
195721.5
196022.3
196622.3
196932.3
197121.8
197311.8
197411.8
197521.8
197621.8
197731.8
198143
198213
198723
198953
199193.5
199223.5
199363.5
199423.5
199613.5
199813.5
200022.8
200112.8
200232.8
200372.8
200522.8
200622.8
200742.8
200812.8
201083.3
201323.3
201423.3
201553.3
201623.3
201813.3
202511
First to last qualifying date each year at Ostrovnoe For each year, a bar from the first to the last day at Ostrovnoe meeting 30 C (86 F). 1936: 28 June 1936 to 1 July 19361941: 19 July 1941 to 19 July 19411952: 17 July 1952 to 18 July 19521953: 9 July 1953 to 9 July 19531956: 1 July 1956 to 1 July 19561957: 20 July 1957 to 24 July 19571960: 28 June 1960 to 16 July 19601966: 24 June 1966 to 25 June 19661969: 3 July 1969 to 8 August 19691971: 25 July 1971 to 26 July 19711973: 9 July 1973 to 9 July 19731974: 9 August 1974 to 9 August 19741975: 5 July 1975 to 6 July 19751976: 18 July 1976 to 19 August 19761977: 18 July 1977 to 20 July 19771981: 28 June 1981 to 5 July 19811982: 19 July 1982 to 19 July 19821987: 25 July 1987 to 26 July 19871989: 13 June 1989 to 1 July 19891991: 27 June 1991 to 20 July 19911992: 29 July 1992 to 30 July 19921993: 28 June 1993 to 30 July 19931994: 25 July 1994 to 26 July 19941996: 21 June 1996 to 21 June 19961998: 28 July 1998 to 28 July 19982000: 30 June 2000 to 1 July 20002001: 26 July 2001 to 26 July 20012002: 25 June 2002 to 6 August 20022003: 6 July 2003 to 4 August 20032005: 5 July 2005 to 22 July 20052006: 6 July 2006 to 7 July 20062007: 21 June 2007 to 13 July 20072008: 19 July 2008 to 19 July 20082010: 7 July 2010 to 30 July 20102013: 9 July 2013 to 10 July 20132014: 20 July 2014 to 5 August 20142015: 2 July 2015 to 7 July 20152016: 2 June 2016 to 6 June 20162018: 7 July 2018 to 7 July 20182025: 31 July 2025 to 31 July 202519361957197319811992200020062014JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ostrovnoe meeting 30 C (86 F).
First to last qualifying date each year at Ostrovnoe
YearFirst dateLast date
19361936-06-281936-07-01
19411941-07-191941-07-19
19521952-07-171952-07-18
19531953-07-091953-07-09
19561956-07-011956-07-01
19571957-07-201957-07-24
19601960-06-281960-07-16
19661966-06-241966-06-25
19691969-07-031969-08-08
19711971-07-251971-07-26
19731973-07-091973-07-09
19741974-08-091974-08-09
19751975-07-051975-07-06
19761976-07-181976-08-19
19771977-07-181977-07-20
19811981-06-281981-07-05
19821982-07-191982-07-19
19871987-07-251987-07-26
19891989-06-131989-07-01
19911991-06-271991-07-20
19921992-07-291992-07-30
19931993-06-281993-07-30
19941994-07-251994-07-26
19961996-06-211996-06-21
19981998-07-281998-07-28
20002000-06-302000-07-01
20012001-07-262001-07-26
20022002-06-252002-08-06
20032003-07-062003-08-04
20052005-07-052005-07-22
20062006-07-062006-07-07
20072007-06-212007-07-13
20082008-07-192008-07-19
20102010-07-072010-07-30
20132013-07-092013-07-10
20142014-07-202014-08-05
20152015-07-022015-07-07
20162016-06-022016-06-06
20182018-07-072018-07-07
20252025-07-312025-07-31

Every Fixed Threshold

Fixed thresholds at Ostrovnoe
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days40919911
35 C (95 F): Days1119911
90 F (32.2 C): Days14420031
0 C (32 F): Ice days (max80227195884
0 C (32 F): Frost days (min792831986120
-10 C (14 F): Days with min79228195887
-20 C (-4 F): Days with min79187195864
-30 C (-22 F): Days with min79141199248
-40 C (-40 F): Days with min7975199321
20 C (68 F): Tropical nights (min2119521
10 mm (0.39 in): Days with 10 mm or more rain72720111
25 mm (0.98 in): Days with 25 mm or more rain8119381

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1936.

Download the Data

  • Data for Ostrovnoe 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).