Byssa Weather Records (RSM00031397)

Record envelope, standing records and threshold days for Byssa (RSM00031397), Russia, with 58 years of record.

Key Facts for Byssa

Byssa (RSM00031397) is a weather station in Russia at 52.37 latitude and 131.30 longitude, 293 m (961 ft) above sea level.
The station reports from 1936 to 1993, 58 years of record.
1,464 records set at Byssa still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Byssa set a daily record precipitation of 5.1 mm (0.20 in) on 1 February 1993.

About the Station

Location: Russia, 52.37 latitude, 131.30 longitude.
Elevation: 293 m (961 ft).
Period of record: 1936 to 1993, 58 years.
Eligible elements: 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 Byssa. 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 Byssa, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	-4.0 C (24.8 F)	-50.0 C (-58.0 F)	n/a	n/a
Feb	2.8 C (37.0 F)	-47.8 C (-54.0 F)	n/a	n/a
Mar	14.8 C (58.6 F)	-41.1 C (-42.0 F)	n/a	n/a
Apr	23.9 C (75.0 F)	-27.0 C (-16.6 F)	n/a	n/a
May	33.0 C (91.4 F)	-7.2 C (19.0 F)	n/a	n/a
Jun	33.7 C (92.7 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	34.0 C (93.2 F)	1.0 C (33.8 F)	n/a	n/a
Aug	33.0 C (91.4 F)	-1.0 C (30.2 F)	n/a	n/a
Sep	28.9 C (84.0 F)	-10.0 C (14.0 F)	n/a	n/a
Oct	22.0 C (71.6 F)	-26.0 C (-14.8 F)	n/a	n/a
Nov	7.8 C (46.0 F)	-41.6 C (-42.9 F)	n/a	n/a
Dec	-2.0 C (28.4 F)	-48.8 C (-55.8 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Byssa still stand. 1969 holds the most, with 114.

Standing records at Byssa by the year they were set
Year set	Standing records
1954	7
1955	21
1958	26
1959	80
1960	53
1961	30
1962	59
1963	78
1969	114
1970	67
1971	33
1973	55
1974	54
1975	85
1976	56
1977	52
1978	38
1979	54
1980	65
1981	47
1982	11
1983	22
1984	42
1985	40
1986	44
1987	46
1988	33
1989	26
1990	60
1991	30
1992	23
1993	13

All-Time Record Progression

1 new records

1 all-time records were set at Byssa between 4 August 1991 and 4 August 1991. Each dot is a new record.

Wettest Day of Each Month

Aug: 84.9 mm (3.3 in)

The wettest day on record for each calendar month at Byssa. The most was 84.9 mm (3.3 in) on 4 August 1991.

Record daily precipitation for each month at Byssa
Month	Record daily precipitation (mm)	Date
Jan	6.1 mm (0.24 in)	12 January 1982
Feb	6.0 mm (0.24 in)	12 February 1970
Mar	18.0 mm (0.7 in)	10 March 1989
Apr	35.5 mm (1.4 in)	30 April 1987
May	38.9 mm (1.5 in)	26 May 1978
Jun	61.0 mm (2.4 in)	18 June 1985
Jul	82.7 mm (3.3 in)	4 July 1964
Aug	84.9 mm (3.3 in)	4 August 1991
Sep	60.9 mm (2.4 in)	3 September 1969
Oct	28.0 mm (1.1 in)	16 October 1984
Nov	20.5 mm (0.8 in)	2 November 1983
Dec	13.0 mm (0.5 in)	14 December 1955

Period of Record Coverage

1954 to 1993

33 years of record at Byssa, 1954 to 1993. 33 years have data for under 90 percent of days and are left out of rankings: 1954, 1955, 1957, 1958, 1959, 1960, 1961, 1962 and others.

Days with data per year at Byssa
Year	Days with data	Share of year	Complete
1954	43	12%	No
1955	90	25%	No
1957	5	1%	No
1958	173	47%	No
1959	315	86%	No
1960	247	67%	No
1961	122	33%	No
1962	302	83%	No
1963	322	88%	No
1969	328	90%	No
1970	326	89%	No
1971	168	46%	No
1973	314	86%	No
1974	277	76%	No
1975	300	82%	No
1976	258	70%	No
1977	275	75%	No
1978	188	52%	No
1979	199	55%	No
1980	305	83%	No
1981	298	82%	No
1982	34	9%	No
1983	153	42%	No
1984	254	69%	No
1985	275	75%	No
1986	280	77%	No
1987	258	71%	No
1988	262	72%	No
1989	247	68%	No
1990	270	74%	No
1991	233	64%	No
1992	161	44%	No
1993	96	26%	No

Latest Records

Latest records at Byssa
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 February 1993	Byssa, RU	daily rain	5.1 mm (0.20 in)	3.3 mm (0.13 in)	44 years	20 of 100 (Routine)
22 December 1992	Byssa, RU	daily rain	7.2 mm (0.28 in)	4.8 mm (0.19 in)	24 years	20 of 100 (Routine)
4 April 1992	Byssa, RU	daily rain	5.7 mm (0.22 in)	0.7 mm (0.03 in)	34 years	16 of 100 (Routine)
14 March 1992	Byssa, RU	daily rain	8.5 mm (0.33 in)	0.6 mm (0.02 in)	34 years	17 of 100 (Routine)
29 February 1992	Byssa, RU	daily rain	1.2 mm (0.05 in)	1.0 mm (0.04 in)	44 years	20 of 100 (Routine)
28 February 1992	Byssa, RU	daily rain	2.3 mm (0.09 in)	0.2 mm (0.01 in)	36 years	17 of 100 (Routine)
16 December 1991	Byssa, RU	daily rain	5.5 mm (0.22 in)	3.6 mm (0.14 in)	54 years	20 of 100 (Routine)
1 October 1991	Byssa, RU	daily rain	22.2 mm (0.9 in)	9.5 mm (0.37 in)	36 years	20 of 100 (Routine)
4 August 1991	Byssa, RU	all-time rain	84.9 mm (3.3 in)	2.2 mm (0.09 in)	27 years	34 of 100 (Routine)
9 June 1991	Byssa, RU	daily rain	42.2 mm (1.7 in)	24.9 mm (1.0 in)	22 years	39 of 100 (Notable)
24 May 1991	Byssa, RU	daily rain	29.8 mm (1.2 in)	15.0 mm (0.6 in)	14 years	34 of 100 (Routine)
23 March 1991	Byssa, RU	daily rain	3.0 mm (0.12 in)	0.6 mm (0.02 in)	13 years	11 of 100 (Routine)
18 March 1991	Byssa, RU	daily rain	9.3 mm (0.37 in)	7.8 mm (0.31 in)	20 years	20 of 100 (Routine)
4 March 1991	Byssa, RU	daily rain	3.7 mm (0.15 in)	0.2 mm (0.01 in)	46 years	19 of 100 (Routine)
16 January 1991	Byssa, RU	daily rain	5.4 mm (0.21 in)	0.9 mm (0.04 in)	4 years	10 of 100 (Routine)
23 December 1990	Byssa, RU	daily rain	4.2 mm (0.17 in)	1.4 mm (0.06 in)	21 years	18 of 100 (Routine)
13 December 1990	Byssa, RU	daily rain	3.3 mm (0.13 in)	0.8 mm (0.03 in)	28 years	17 of 100 (Routine)
8 December 1990	Byssa, RU	daily rain	5.0 mm (0.20 in)	0.2 mm (0.01 in)	32 years	15 of 100 (Routine)
14 November 1990	Byssa, RU	daily rain	13.1 mm (0.5 in)	7.2 mm (0.28 in)	39 years	20 of 100 (Routine)
14 June 1990	Byssa, RU	daily rain	20.3 mm (0.8 in)	5.1 mm (0.20 in)	11 years	13 of 100 (Routine)

Extremes by Year

1936 to 1993

Yearly extremes at Byssa: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.0 C (93.2 F)	1974	31.1 C (88.0 F)	33
Coldest night (TNn)	-50.0 C (-58.0 F)	1969	-45.0 C (-49.0 F)	32
Wettest day (Rx1day)	84.9 mm (3.3 in)	1991	47.3 mm (1.9 in)	58
Wettest five days (Rx5day)	212.2 mm (8.4 in)	1976	85.6 mm (3.4 in)	58
Longest dry spell (CDD)	74 days	1956	35 days	58

Hottest day (TXx)

The hottest day of the year at Byssa, 1936 to 1993. The record is 34.0 C (93.2 F) in 1974, marked on the chart; the median year is 31.1 C (88.0 F).

Hottest day (TXx) at Byssa 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	n/a
1951	n/a
1952	n/a
1953	n/a
1954	17.2 C (63.0 F)
1955	27.8 C (82.0 F)
1956	n/a
1957	-17.8 C (0.0 F)
1958	30.0 C (86.0 F)
1959	32.2 C (90.0 F)
1960	31.1 C (88.0 F)
1961	30.0 C (86.0 F)
1962	32.2 C (90.0 F)
1963	32.8 C (91.0 F)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	31.1 C (88.0 F)
1970	33.9 C (93.0 F)
1971	30.0 C (86.0 F)
1972	n/a
1973	32.0 C (89.6 F)
1974	34.0 C (93.2 F)
1975	33.0 C (91.4 F)
1976	30.0 C (86.0 F)
1977	32.0 C (89.6 F)
1978	30.0 C (86.0 F)
1979	30.0 C (86.0 F)
1980	33.0 C (91.4 F)
1981	31.0 C (87.8 F)
1982	18.8 C (65.8 F)
1983	28.5 C (83.3 F)
1984	29.4 C (84.9 F)
1985	30.9 C (87.6 F)
1986	33.7 C (92.7 F)
1987	31.5 C (88.7 F)
1988	33.0 C (91.4 F)
1989	31.3 C (88.3 F)
1990	31.4 C (88.5 F)
1991	30.7 C (87.3 F)
1992	33.0 C (91.4 F)
1993	27.5 C (81.5 F)

Coldest night (TNn)

The coldest night of the year at Byssa, 1936 to 1993. The record is -50.0 C (-58.0 F) in 1969, marked on the chart; the median year is -45.0 C (-49.0 F).

Coldest night (TNn) at Byssa by year
Year	Coldest night (TNn)
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	n/a
1951	n/a
1952	n/a
1953	n/a
1954	-43.9 C (-47.0 F)
1955	-43.9 C (-47.0 F)
1956	n/a
1957	n/a
1958	-38.9 C (-38.0 F)
1959	-47.8 C (-54.0 F)
1960	-45.0 C (-49.0 F)
1961	-45.0 C (-49.0 F)
1962	-43.9 C (-47.0 F)
1963	-41.1 C (-42.0 F)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	-50.0 C (-58.0 F)
1970	-47.2 C (-53.0 F)
1971	-46.1 C (-51.0 F)
1972	n/a
1973	-44.0 C (-47.2 F)
1974	-44.0 C (-47.2 F)
1975	-45.0 C (-49.0 F)
1976	-45.0 C (-49.0 F)
1977	-46.0 C (-50.8 F)
1978	-45.0 C (-49.0 F)
1979	-50.0 C (-58.0 F)
1980	-48.0 C (-54.4 F)
1981	-42.0 C (-43.6 F)
1982	-47.7 C (-53.9 F)
1983	-43.8 C (-46.8 F)
1984	-46.5 C (-51.7 F)
1985	-47.5 C (-53.5 F)
1986	-48.8 C (-55.8 F)
1987	-45.9 C (-50.6 F)
1988	-45.6 C (-50.1 F)
1989	-43.1 C (-45.6 F)
1990	-47.5 C (-53.5 F)
1991	-41.1 C (-42.0 F)
1992	-36.7 C (-34.1 F)
1993	-38.0 C (-36.4 F)

Wettest day (Rx1day)

The wettest day of the year at Byssa, 1936 to 1993. The record is 84.9 mm (3.3 in) in 1991, marked on the chart; the median year is 47.3 mm (1.9 in).

Wettest day (Rx1day) at Byssa by year
Year	Wettest day (Rx1day)
1936	53.7 mm (2.1 in)
1937	35.0 mm (1.4 in)
1938	45.7 mm (1.8 in)
1939	40.4 mm (1.6 in)
1940	67.3 mm (2.6 in)
1941	42.9 mm (1.7 in)
1942	69.4 mm (2.7 in)
1943	57.6 mm (2.3 in)
1944	55.1 mm (2.2 in)
1945	45.6 mm (1.8 in)
1946	60.5 mm (2.4 in)
1947	29.2 mm (1.1 in)
1948	82.4 mm (3.2 in)
1949	61.0 mm (2.4 in)
1950	62.9 mm (2.5 in)
1951	44.4 mm (1.7 in)
1952	26.9 mm (1.1 in)
1953	78.7 mm (3.1 in)
1954	41.9 mm (1.6 in)
1955	40.9 mm (1.6 in)
1956	56.8 mm (2.2 in)
1957	59.2 mm (2.3 in)
1958	45.8 mm (1.8 in)
1959	69.1 mm (2.7 in)
1960	44.2 mm (1.7 in)
1961	81.2 mm (3.2 in)
1962	48.4 mm (1.9 in)
1963	79.6 mm (3.1 in)
1964	82.7 mm (3.3 in)
1965	35.3 mm (1.4 in)
1966	39.2 mm (1.5 in)
1967	57.6 mm (2.3 in)
1968	33.6 mm (1.3 in)
1969	70.1 mm (2.8 in)
1970	46.2 mm (1.8 in)
1971	55.3 mm (2.2 in)
1972	51.0 mm (2.0 in)
1973	30.2 mm (1.2 in)
1974	41.2 mm (1.6 in)
1975	44.7 mm (1.8 in)
1976	78.2 mm (3.1 in)
1977	33.5 mm (1.3 in)
1978	62.4 mm (2.5 in)
1979	51.1 mm (2.0 in)
1980	40.0 mm (1.6 in)
1981	66.7 mm (2.6 in)
1982	43.6 mm (1.7 in)
1983	74.0 mm (2.9 in)
1984	73.0 mm (2.9 in)
1985	61.0 mm (2.4 in)
1986	45.9 mm (1.8 in)
1987	44.1 mm (1.7 in)
1988	32.4 mm (1.3 in)
1989	33.4 mm (1.3 in)
1990	29.6 mm (1.2 in)
1991	84.9 mm (3.3 in)
1992	32.3 mm (1.3 in)
1993	21.1 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Byssa, 1936 to 1993. The record is 212.2 mm (8.4 in) in 1976, marked on the chart; the median year is 85.6 mm (3.4 in).

Wettest five days (Rx5day) at Byssa by year
Year	Wettest five days (Rx5day)
1936	155.0 mm (6.1 in)
1937	75.7 mm (3.0 in)
1938	107.2 mm (4.2 in)
1939	57.5 mm (2.3 in)
1940	141.3 mm (5.6 in)
1941	60.9 mm (2.4 in)
1942	102.6 mm (4.0 in)
1943	94.0 mm (3.7 in)
1944	84.6 mm (3.3 in)
1945	77.9 mm (3.1 in)
1946	104.1 mm (4.1 in)
1947	56.9 mm (2.2 in)
1948	110.4 mm (4.3 in)
1949	149.4 mm (5.9 in)
1950	79.1 mm (3.1 in)
1951	106.3 mm (4.2 in)
1952	71.7 mm (2.8 in)
1953	154.5 mm (6.1 in)
1954	73.4 mm (2.9 in)
1955	86.6 mm (3.4 in)
1956	104.0 mm (4.1 in)
1957	98.4 mm (3.9 in)
1958	82.5 mm (3.2 in)
1959	73.5 mm (2.9 in)
1960	77.5 mm (3.1 in)
1961	92.7 mm (3.6 in)
1962	55.5 mm (2.2 in)
1963	159.3 mm (6.3 in)
1964	148.5 mm (5.8 in)
1965	56.2 mm (2.2 in)
1966	76.6 mm (3.0 in)
1967	139.0 mm (5.5 in)
1968	58.7 mm (2.3 in)
1969	124.3 mm (4.9 in)
1970	90.1 mm (3.5 in)
1971	130.7 mm (5.1 in)
1972	123.1 mm (4.8 in)
1973	60.6 mm (2.4 in)
1974	71.0 mm (2.8 in)
1975	82.8 mm (3.3 in)
1976	212.2 mm (8.4 in)
1977	80.9 mm (3.2 in)
1978	104.3 mm (4.1 in)
1979	70.4 mm (2.8 in)
1980	106.1 mm (4.2 in)
1981	79.8 mm (3.1 in)
1982	83.2 mm (3.3 in)
1983	79.9 mm (3.1 in)
1984	108.6 mm (4.3 in)
1985	87.1 mm (3.4 in)
1986	74.0 mm (2.9 in)
1987	56.0 mm (2.2 in)
1988	90.2 mm (3.6 in)
1989	58.0 mm (2.3 in)
1990	57.5 mm (2.3 in)
1991	145.7 mm (5.7 in)
1992	94.5 mm (3.7 in)
1993	32.2 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Byssa, 1936 to 1993. The record is 74 days in 1956, marked on the chart; the median year is 35 days.

Longest dry spell (CDD) at Byssa by year
Year	Longest dry spell (CDD)
1936	21 days
1937	51 days
1938	30 days
1939	48 days
1940	69 days
1941	22 days
1942	30 days
1943	31 days
1944	63 days
1945	61 days
1946	33 days
1947	50 days
1948	46 days
1949	48 days
1950	38 days
1951	43 days
1952	34 days
1953	34 days
1954	33 days
1955	26 days
1956	74 days
1957	47 days
1958	41 days
1959	24 days
1960	37 days
1961	47 days
1962	56 days
1963	44 days
1964	49 days
1965	27 days
1966	26 days
1967	27 days
1968	33 days
1969	37 days
1970	29 days
1971	20 days
1972	55 days
1973	40 days
1974	63 days
1975	24 days
1976	29 days
1977	50 days
1978	30 days
1979	30 days
1980	25 days
1981	69 days
1982	29 days
1983	40 days
1984	22 days
1985	35 days
1986	55 days
1987	30 days
1988	35 days
1989	17 days
1990	41 days
1991	20 days
1992	32 days
1993	6 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

57 years, 1936 to 1992

A day with at least 50.7 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 99.5 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Byssa: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	50.7 mm (2.0 in)
5 years	65.9 mm (2.6 in)
10 years	75.0 mm (3.0 in)
25 years	85.6 mm (3.4 in)
50 years	92.8 mm (3.7 in)
100 years	99.5 mm (3.9 in)	Longer than the 57 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, 57 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: 84.9 mm (3.3 in) in 1991; 82.7 mm (3.3 in) in 1964; 82.4 mm (3.2 in) in 1948.

Download the Data

Data for Byssa standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Byssa 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 2026-10-15 (15 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).