Ostrov Chetyrehstol Weather Records (RSM00021965)

Record envelope, standing records and threshold days for Ostrov Chetyrehstol (RSM00021965), Russia, with 60 years of record.

Key Facts for Ostrov Chetyrehstol

Ostrov Chetyrehstol (RSM00021965) is a weather station in Russia at 70.63 latitude and 162.48 longitude, 41 m (135 ft) above sea level.
The station reports from 1936 to 1995, 60 years of record.
1,464 records set at Ostrov Chetyrehstol still stand.
Records are tracked for tmax, prcp: an element needs 30 years of data to be eligible.
Ostrov Chetyrehstol set a monthly record high maximum temperature of -0.7 C (30.7 F) on 29 March 1995.

About the Station

Location: Russia, 70.63 latitude, 162.48 longitude.
Elevation: 41 m (135 ft).
Period of record: 1936 to 1995, 60 years.
Eligible elements: tmax, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Ostrov Chetyrehstol. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ostrov Chetyrehstol, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	-2.8 C (27.0 F)	-47.2 C (-53.0 F)	n/a	n/a
Feb	-5.6 C (21.9 F)	-46.1 C (-51.0 F)	n/a	n/a
Mar	-0.7 C (30.7 F)	-42.3 C (-44.1 F)	n/a	n/a
Apr	2.5 C (36.5 F)	-38.0 C (-36.4 F)	n/a	n/a
May	10.0 C (50.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Jun	19.0 C (66.2 F)	-12.0 C (10.4 F)	n/a	n/a
Jul	22.8 C (73.0 F)	-5.0 C (23.0 F)	n/a	n/a
Aug	18.9 C (66.0 F)	-7.2 C (19.0 F)	n/a	n/a
Sep	11.8 C (53.2 F)	-17.2 C (1.0 F)	n/a	n/a
Oct	12.0 C (53.6 F)	-28.9 C (-20.0 F)	n/a	n/a
Nov	5.3 C (41.5 F)	-39.0 C (-38.2 F)	n/a	n/a
Dec	6.1 C (43.0 F)	-45.0 C (-49.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ostrov Chetyrehstol still stand. 1974 holds the most, with 64.

Standing records at Ostrov Chetyrehstol by the year they were set
Year set	Standing records
1936	18
1937	13
1950	21
1951	28
1952	25
1953	7
1954	27
1955	22
1956	6
1957	18
1958	15
1959	15
1960	18
1961	26
1962	34
1963	45
1964	45
1965	55
1966	40
1967	30
1968	37
1969	61
1970	41
1971	33
1973	43
1974	64
1975	46
1976	60
1977	48
1978	28
1979	44
1980	35
1981	13
1982	35
1983	18
1984	33
1985	29
1986	32
1987	16
1988	30
1989	25
1990	36
1991	42
1992	12
1993	38
1994	46
1995	11

Wettest Day of Each Month

Jul: 27.2 mm (1.1 in)

The wettest day on record for each calendar month at Ostrov Chetyrehstol. The most was 27.2 mm (1.1 in) on 24 July 1954.

Record daily precipitation for each month at Ostrov Chetyrehstol
Month	Record daily precipitation (mm)	Date
Jan	14.0 mm (0.6 in)	16 January 1950
Feb	14.0 mm (0.6 in)	16 February 1950
Mar	15.0 mm (0.6 in)	13 March 1939
Apr	10.9 mm (0.4 in)	11 April 1973
May	8.4 mm (0.33 in)	16 May 1940
Jun	14.9 mm (0.6 in)	23 June 1960
Jul	27.2 mm (1.1 in)	24 July 1954
Aug	20.1 mm (0.8 in)	28 August 1974
Sep	10.4 mm (0.4 in)	1 September 1991
Oct	19.0 mm (0.7 in)	5 October 1938
Nov	10.0 mm (0.4 in)	23 November 1938
Dec	20.0 mm (0.8 in)	26 December 1938

Period of Record Coverage

1950 to 1995

45 years of record at Ostrov Chetyrehstol, 1950 to 1995. 45 years have data for under 90 percent of days and are left out of rankings: 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957 and others.

Days with data per year at Ostrov Chetyrehstol
Year	Days with data	Share of year	Complete
1950	137	38%	No
1951	99	27%	No
1952	230	63%	No
1953	79	22%	No
1954	125	34%	No
1955	118	32%	No
1956	99	27%	No
1957	127	35%	No
1958	131	36%	No
1959	79	22%	No
1960	139	38%	No
1961	239	65%	No
1962	252	69%	No
1963	256	70%	No
1964	274	75%	No
1965	269	74%	No
1966	267	73%	No
1967	275	75%	No
1968	294	80%	No
1969	289	79%	No
1970	289	79%	No
1971	151	41%	No
1973	277	76%	No
1974	285	78%	No
1975	270	74%	No
1976	281	77%	No
1977	296	81%	No
1978	285	78%	No
1979	303	83%	No
1980	289	79%	No
1981	296	81%	No
1982	255	70%	No
1983	255	70%	No
1984	241	66%	No
1985	248	68%	No
1986	250	68%	No
1987	253	69%	No
1988	271	74%	No
1989	244	67%	No
1990	261	72%	No
1991	254	70%	No
1992	255	70%	No
1993	258	71%	No
1994	266	73%	No
1995	111	30%	No

Latest Records

Latest records at Ostrov Chetyrehstol
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 March 1995	Ostrov Chetyrehstol, RU	monthly high max	-0.7 C (30.7 F)	4.3 C (7.7 F)	40 years	33 of 100 (Routine)
8 March 1995	Ostrov Chetyrehstol, RU	daily high max	-7.1 C (19.2 F)	8.4 C (15.1 F)	4 years	19 of 100 (Routine)
7 March 1995	Ostrov Chetyrehstol, RU	daily high max	-6.6 C (20.1 F)	3.4 C (6.1 F)	34 years	19 of 100 (Routine)
17 February 1995	Ostrov Chetyrehstol, RU	daily high max	-13.2 C (8.2 F)	2.9 C (5.2 F)	28 years	16 of 100 (Routine)
16 February 1995	Ostrov Chetyrehstol, RU	daily high max	-8.2 C (17.2 F)	6.8 C (12.2 F)	44 years	27 of 100 (Routine)
26 December 1994	Ostrov Chetyrehstol, RU	daily low max	-35.7 C (-32.3 F)	1.7 C (3.1 F)	20 years	12 of 100 (Routine)
20 December 1994	Ostrov Chetyrehstol, RU	daily low max	-34.6 C (-30.3 F)	0.4 C (0.7 F)	0 years	4 of 100 (Routine)
19 December 1994	Ostrov Chetyrehstol, RU	daily low max	-33.3 C (-27.9 F)	0.5 C (0.9 F)	28 years	12 of 100 (Routine)
15 December 1994	Ostrov Chetyrehstol, RU	daily low max	-34.4 C (-29.9 F)	1.6 C (2.9 F)	28 years	14 of 100 (Routine)
17 November 1994	Ostrov Chetyrehstol, RU	daily low max	-27.2 C (-17.0 F)	2.8 C (5.0 F)	3 years	8 of 100 (Routine)
5 October 1994	Ostrov Chetyrehstol, RU	daily low max	-8.5 C (16.7 F)	0.5 C (0.9 F)	20 years	10 of 100 (Routine)
18 September 1994	Ostrov Chetyrehstol, RU	daily low max	-5.0 C (23.0 F)	1.1 C (2.0 F)	40 years	19 of 100 (Routine)
15 September 1994	Ostrov Chetyrehstol, RU	daily low max	-4.4 C (24.1 F)	1.4 C (2.5 F)	16 years	12 of 100 (Routine)
29 August 1994	Ostrov Chetyrehstol, RU	daily low max	-1.3 C (29.7 F)	0.1 C (0.2 F)	11 years	7 of 100 (Routine)
25 August 1994	Ostrov Chetyrehstol, RU	daily rain	14.0 mm (0.6 in)	5.0 mm (0.20 in)	36 years	20 of 100 (Routine)
23 August 1994	Ostrov Chetyrehstol, RU	daily low max	-0.3 C (31.5 F)	0.3 C (0.5 F)	32 years	13 of 100 (Routine)
22 August 1994	Ostrov Chetyrehstol, RU	daily low max	-0.5 C (31.1 F)	0.8 C (1.4 F)	1 year	6 of 100 (Routine)
28 July 1994	Ostrov Chetyrehstol, RU	daily low max	0.4 C (32.7 F)	0.4 C (0.7 F)	8 years	7 of 100 (Routine)
27 July 1994	Ostrov Chetyrehstol, RU	daily low max	0.4 C (32.7 F)	0.4 C (0.7 F)	9 years	7 of 100 (Routine)
26 July 1994	Ostrov Chetyrehstol, RU	daily high max	15.6 C (60.1 F)	3.6 C (6.5 F)	13 years	17 of 100 (Routine)

Extremes by Year

1936 to 1995

Yearly extremes at Ostrov Chetyrehstol: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	22.8 C (73.0 F)	1952	15.0 C (59.0 F)	45
Coldest night (TNn)	-47.2 C (-53.0 F)	1964	-41.7 C (-43.1 F)	47
Wettest day (Rx1day)	27.2 mm (1.1 in)	1954	10.2 mm (0.4 in)	59
Wettest five days (Rx5day)	43.8 mm (1.7 in)	1954	15.5 mm (0.6 in)	57
Longest dry spell (CDD)	181 days	1953	70 days	59

Hottest day (TXx)

The hottest day of the year at Ostrov Chetyrehstol, 1936 to 1995. The record is 22.8 C (73.0 F) in 1952, marked on the chart; the median year is 15.0 C (59.0 F).

Hottest day (TXx) at Ostrov Chetyrehstol by year
Year	Hottest day (TXx)
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	13.9 C (57.0 F)
1951	16.1 C (61.0 F)
1952	22.8 C (73.0 F)
1953	15.0 C (59.0 F)
1954	18.9 C (66.0 F)
1955	17.2 C (63.0 F)
1956	16.1 C (61.0 F)
1957	17.2 C (63.0 F)
1958	7.8 C (46.0 F)
1959	7.8 C (46.0 F)
1960	20.0 C (68.0 F)
1961	15.0 C (59.0 F)
1962	10.0 C (50.0 F)
1963	13.9 C (57.0 F)
1964	15.0 C (59.0 F)
1965	10.0 C (50.0 F)
1966	12.8 C (55.0 F)
1967	12.8 C (55.0 F)
1968	12.2 C (54.0 F)
1969	17.8 C (64.0 F)
1970	15.0 C (59.0 F)
1971	17.2 C (63.0 F)
1973	19.0 C (66.2 F)
1974	18.0 C (64.4 F)
1975	14.0 C (57.2 F)
1976	16.0 C (60.8 F)
1977	17.0 C (62.6 F)
1978	14.0 C (57.2 F)
1979	13.0 C (55.4 F)
1980	14.0 C (57.2 F)
1981	20.0 C (68.0 F)
1982	22.3 C (72.1 F)
1983	13.2 C (55.8 F)
1984	13.9 C (57.0 F)
1985	12.2 C (54.0 F)
1986	12.3 C (54.1 F)
1987	18.5 C (65.3 F)
1988	12.6 C (54.7 F)
1989	15.6 C (60.1 F)
1990	18.0 C (64.4 F)
1991	21.7 C (71.1 F)
1992	14.0 C (57.2 F)
1993	17.1 C (62.8 F)
1994	20.2 C (68.4 F)
1995	2.7 C (36.9 F)

Coldest night (TNn)

The coldest night of the year at Ostrov Chetyrehstol, 1936 to 1995. The record is -47.2 C (-53.0 F) in 1964, marked on the chart; the median year is -41.7 C (-43.1 F).

Coldest night (TNn) at Ostrov Chetyrehstol by year
Year	Coldest night (TNn)
1936	-37.8 C (-36.0 F)
1937	-38.9 C (-38.0 F)
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	-38.9 C (-38.0 F)
1951	-45.0 C (-49.0 F)
1952	-41.1 C (-42.0 F)
1953	-38.9 C (-38.0 F)
1954	-42.8 C (-45.0 F)
1955	-40.0 C (-40.0 F)
1956	-38.9 C (-38.0 F)
1957	-40.0 C (-40.0 F)
1958	-42.8 C (-45.0 F)
1959	-38.9 C (-38.0 F)
1960	-38.9 C (-38.0 F)
1961	-41.1 C (-42.0 F)
1962	-37.8 C (-36.0 F)
1963	-41.1 C (-42.0 F)
1964	-47.2 C (-53.0 F)
1965	-42.2 C (-44.0 F)
1966	-46.1 C (-51.0 F)
1967	-43.9 C (-47.0 F)
1968	-45.0 C (-49.0 F)
1969	-41.1 C (-42.0 F)
1970	-42.2 C (-44.0 F)
1971	-45.0 C (-49.0 F)
1973	-45.0 C (-49.0 F)
1974	-43.0 C (-45.4 F)
1975	-41.0 C (-41.8 F)
1976	-42.0 C (-43.6 F)
1977	-43.0 C (-45.4 F)
1978	-44.0 C (-47.2 F)
1979	-42.0 C (-43.6 F)
1980	-39.0 C (-38.2 F)
1981	-38.0 C (-36.4 F)
1982	-41.7 C (-43.1 F)
1983	-40.7 C (-41.3 F)
1984	-42.3 C (-44.1 F)
1985	-41.5 C (-42.7 F)
1986	-42.5 C (-44.5 F)
1987	-43.8 C (-46.8 F)
1988	-42.8 C (-45.0 F)
1989	-40.6 C (-41.1 F)
1990	-41.8 C (-43.2 F)
1991	-40.0 C (-40.0 F)
1992	-38.9 C (-38.0 F)
1993	-42.6 C (-44.7 F)
1994	-42.1 C (-43.8 F)
1995	-39.4 C (-38.9 F)

Wettest day (Rx1day)

The wettest day of the year at Ostrov Chetyrehstol, 1936 to 1995. The record is 27.2 mm (1.1 in) in 1954, marked on the chart; the median year is 10.2 mm (0.4 in).

Wettest day (Rx1day) at Ostrov Chetyrehstol by year
Year	Wettest day (Rx1day)
1936	8.9 mm (0.35 in)
1937	11.8 mm (0.5 in)
1938	20.0 mm (0.8 in)
1939	15.0 mm (0.6 in)
1940	10.1 mm (0.4 in)
1941	9.0 mm (0.35 in)
1942	13.8 mm (0.5 in)
1943	6.8 mm (0.27 in)
1944	12.6 mm (0.5 in)
1945	12.7 mm (0.5 in)
1946	11.6 mm (0.5 in)
1947	8.2 mm (0.32 in)
1948	9.0 mm (0.35 in)
1949	12.0 mm (0.5 in)
1950	19.5 mm (0.8 in)
1951	9.5 mm (0.37 in)
1952	12.5 mm (0.5 in)
1953	17.6 mm (0.7 in)
1954	27.2 mm (1.1 in)
1955	12.6 mm (0.5 in)
1956	13.5 mm (0.5 in)
1957	8.0 mm (0.31 in)
1958	9.0 mm (0.35 in)
1959	18.8 mm (0.7 in)
1960	14.9 mm (0.6 in)
1961	8.1 mm (0.32 in)
1962	20.8 mm (0.8 in)
1963	8.8 mm (0.35 in)
1964	7.5 mm (0.30 in)
1965	6.3 mm (0.25 in)
1966	13.5 mm (0.5 in)
1967	10.9 mm (0.4 in)
1968	6.1 mm (0.24 in)
1969	11.2 mm (0.4 in)
1970	9.9 mm (0.39 in)
1971	14.5 mm (0.6 in)
1973	10.9 mm (0.4 in)
1974	20.1 mm (0.8 in)
1975	15.0 mm (0.6 in)
1976	10.2 mm (0.4 in)
1977	3.5 mm (0.14 in)
1978	8.5 mm (0.33 in)
1979	10.7 mm (0.4 in)
1980	17.1 mm (0.7 in)
1981	10.2 mm (0.4 in)
1982	4.8 mm (0.19 in)
1983	9.3 mm (0.37 in)
1984	5.0 mm (0.20 in)
1985	3.1 mm (0.12 in)
1986	3.3 mm (0.13 in)
1987	6.2 mm (0.24 in)
1988	2.4 mm (0.09 in)
1989	3.5 mm (0.14 in)
1990	14.3 mm (0.6 in)
1991	10.4 mm (0.4 in)
1992	2.2 mm (0.09 in)
1993	5.1 mm (0.20 in)
1994	14.0 mm (0.6 in)
1995	0.5 mm (0.02 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ostrov Chetyrehstol, 1936 to 1995. The record is 43.8 mm (1.7 in) in 1954, marked on the chart; the median year is 15.5 mm (0.6 in).

Wettest five days (Rx5day) at Ostrov Chetyrehstol by year
Year	Wettest five days (Rx5day)
1936	16.9 mm (0.7 in)
1937	20.3 mm (0.8 in)
1938	39.0 mm (1.5 in)
1939	33.0 mm (1.3 in)
1940	30.1 mm (1.2 in)
1941	17.9 mm (0.7 in)
1942	16.2 mm (0.6 in)
1943	8.6 mm (0.34 in)
1944	18.0 mm (0.7 in)
1945	25.8 mm (1.0 in)
1946	20.9 mm (0.8 in)
1947	13.5 mm (0.5 in)
1948	21.0 mm (0.8 in)
1949	17.1 mm (0.7 in)
1950	20.8 mm (0.8 in)
1951	14.1 mm (0.6 in)
1952	15.2 mm (0.6 in)
1953	17.8 mm (0.7 in)
1954	43.8 mm (1.7 in)
1955	21.0 mm (0.8 in)
1956	21.5 mm (0.8 in)
1957	15.4 mm (0.6 in)
1958	17.4 mm (0.7 in)
1959	25.3 mm (1.0 in)
1960	21.8 mm (0.9 in)
1961	8.5 mm (0.33 in)
1962	23.2 mm (0.9 in)
1963	9.0 mm (0.35 in)
1964	11.4 mm (0.4 in)
1965	16.9 mm (0.7 in)
1966	11.7 mm (0.5 in)
1967	15.5 mm (0.6 in)
1968	10.9 mm (0.4 in)
1969	17.5 mm (0.7 in)
1970	7.1 mm (0.28 in)
1971	7.9 mm (0.31 in)
1973	13.2 mm (0.5 in)
1974	21.9 mm (0.9 in)
1975	15.0 mm (0.6 in)
1976	10.9 mm (0.4 in)
1977	7.7 mm (0.30 in)
1978	15.0 mm (0.6 in)
1979	13.7 mm (0.5 in)
1980	37.5 mm (1.5 in)
1981	19.3 mm (0.8 in)
1982	7.3 mm (0.29 in)
1983	11.4 mm (0.4 in)
1984	9.4 mm (0.37 in)
1985	7.2 mm (0.28 in)
1986	8.3 mm (0.33 in)
1987	9.4 mm (0.37 in)
1988	4.2 mm (0.17 in)
1989	11.4 mm (0.4 in)
1990	20.4 mm (0.8 in)
1991	15.6 mm (0.6 in)
1992	3.4 mm (0.13 in)
1993	5.1 mm (0.20 in)
1994	n/a
1995	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Ostrov Chetyrehstol, 1936 to 1995. The record is 181 days in 1953, marked on the chart; the median year is 70 days.

Longest dry spell (CDD) at Ostrov Chetyrehstol by year
Year	Longest dry spell (CDD)
1936	128 days
1937	124 days
1938	151 days
1939	64 days
1940	132 days
1941	106 days
1942	145 days
1943	151 days
1944	160 days
1945	109 days
1946	86 days
1947	45 days
1948	86 days
1949	32 days
1950	80 days
1951	95 days
1952	107 days
1953	181 days
1954	58 days
1955	62 days
1956	63 days
1957	70 days
1958	78 days
1959	68 days
1960	57 days
1961	112 days
1962	100 days
1963	35 days
1964	76 days
1965	79 days
1966	10 days
1967	18 days
1968	13 days
1969	34 days
1970	22 days
1971	31 days
1973	24 days
1974	26 days
1975	32 days
1976	20 days
1977	59 days
1978	49 days
1979	27 days
1980	43 days
1981	31 days
1982	42 days
1983	38 days
1984	121 days
1985	157 days
1986	80 days
1987	158 days
1988	124 days
1989	101 days
1990	129 days
1991	80 days
1992	95 days
1993	5 days
1994	3 days
1995	2 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

46 years, 1936 to 1992

A day with at least 10.0 mm (0.4 in) of rain is expected about once in 2 years. A day with at least 26.4 mm (1.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Ostrov Chetyrehstol: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	10.0 mm (0.4 in)
5 years	14.9 mm (0.6 in)
10 years	17.9 mm (0.7 in)
25 years	21.5 mm (0.8 in)
50 years	24.1 mm (0.9 in)	Longer than the 46 years of record
100 years	26.4 mm (1.0 in)	Longer than the 46 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 46 years of values from 1936 to 1992.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 27.2 mm (1.1 in) in 1954; 20.8 mm (0.8 in) in 1962; 20.0 mm (0.8 in) in 1938.

Download the Data

Data for Ostrov Chetyrehstol standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).