Bolsoj Uluj Weather Records (RSM00029464)

Record envelope, standing records and threshold days for Bolsoj Uluj (RSM00029464), Russia, with 78 years of record.

Key Facts for Bolsoj Uluj

Bolsoj Uluj (RSM00029464) is a weather station in Russia at 56.65 latitude and 90.55 longitude, 231 m (758 ft) above sea level.
The station reports from 1948 to 2025, 78 years of record.
1,464 records set at Bolsoj Uluj still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Bolsoj Uluj set a daily record precipitation of 24.4 mm (1.0 in) on 10 August 2025.

About the Station

Location: Russia, 56.65 latitude, 90.55 longitude.
Elevation: 231 m (758 ft).
Period of record: 1948 to 2025, 78 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

31 days at or beyond a record

The band shows the record high and record low for each calendar day at Bolsoj Uluj. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Bolsoj Uluj, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	3.1 C (37.6 F)	-44.2 C (-47.6 F)	2.7 C (36.9 F)	-26.2 C (-15.2 F)
Feb	5.2 C (41.4 F)	-43.1 C (-45.6 F)	0.1 C (32.2 F)	-29.3 C (-20.7 F)
Mar	13.9 C (57.0 F)	-30.0 C (-22.0 F)	13.9 C (57.0 F)	-19.3 C (-2.7 F)
Apr	28.0 C (82.4 F)	-15.9 C (3.4 F)	24.5 C (76.1 F)	-8.5 C (16.7 F)
May	31.2 C (88.2 F)	-6.1 C (21.0 F)	31.2 C (88.2 F)	-1.9 C (28.6 F)
Jun	34.6 C (94.3 F)	-2.1 C (28.2 F)	32.7 C (90.9 F)	6.3 C (43.3 F)
Jul	34.1 C (93.4 F)	2.2 C (36.0 F)	30.6 C (87.1 F)	4.6 C (40.3 F)
Aug	32.8 C (91.0 F)	-0.9 C (30.4 F)	28.3 C (82.9 F)	6.3 C (43.3 F)
Sep	27.7 C (81.9 F)	-5.5 C (22.1 F)	n/a	n/a
Oct	20.6 C (69.1 F)	-19.6 C (-3.3 F)	n/a	n/a
Nov	11.5 C (52.7 F)	-36.1 C (-33.0 F)	n/a	n/a
Dec	6.1 C (43.0 F)	-43.7 C (-46.7 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Bolsoj Uluj still stand. 2023 holds the most, with 128.

Standing records at Bolsoj Uluj by the year they were set
Year set	Standing records
1948	10
1949	15
1950	14
1951	35
1952	2
2012	82
2013	113
2014	123
2015	92
2016	118
2017	91
2018	111
2019	102
2020	99
2021	82
2022	95
2023	128
2024	90
2025	62

All-Time Record Progression

1 new records

1 all-time records were set at Bolsoj Uluj between 9 September 2017 and 9 September 2017. Each dot is a new record.

Wettest Day of Each Month

Sep: 99.1 mm (3.9 in)

The wettest day on record for each calendar month at Bolsoj Uluj. The most was 99.1 mm (3.9 in) on 9 September 2017.

Record daily precipitation for each month at Bolsoj Uluj
Month	Record daily precipitation (mm)	Date
Jan	11.9 mm (0.5 in)	29 January 2021
Feb	8.7 mm (0.34 in)	6 February 1969
Mar	9.9 mm (0.39 in)	15 March 1959
Apr	26.9 mm (1.1 in)	30 April 2025
May	32.4 mm (1.3 in)	6 May 1975
Jun	39.8 mm (1.6 in)	23 June 1968
Jul	54.0 mm (2.1 in)	31 July 1979
Aug	57.9 mm (2.3 in)	11 August 2024
Sep	99.1 mm (3.9 in)	9 September 2017
Oct	20.2 mm (0.8 in)	3 October 1988
Nov	17.2 mm (0.7 in)	4 November 1994
Dec	10.5 mm (0.4 in)	24 December 1974

Period of Record Coverage

1948 to 2025

19 years of record at Bolsoj Uluj, 1948 to 2025. 16 years have data for under 90 percent of days and are left out of rankings: 1948, 1949, 1950, 1951, 1952, 2012, 2014, 2016 and others.

Days with data per year at Bolsoj Uluj
Year	Days with data	Share of year	Complete
1948	41	11%	No
1949	44	12%	No
1950	92	25%	No
1951	85	23%	No
1952	13	4%	No
2012	285	78%	No
2013	337	92%	Yes
2014	328	90%	No
2015	333	91%	Yes
2016	316	86%	No
2017	320	88%	No
2018	317	87%	No
2019	316	87%	No
2020	312	85%	No
2021	306	84%	No
2022	334	92%	Yes
2023	318	87%	No
2024	308	84%	No
2025	216	59%	No

Latest Records

Latest records at Bolsoj Uluj
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 August 2025	Bolsoj Uluj, RU	daily rain	24.4 mm (1.0 in)	6.3 mm (0.25 in)	52 years	20 of 100 (Routine)
11 May 2025	Bolsoj Uluj, RU	daily rain	16.0 mm (0.6 in)	6.7 mm (0.26 in)	47 years	20 of 100 (Routine)
30 April 2025	Bolsoj Uluj, RU	monthly rain	26.9 mm (1.1 in)	12.2 mm (0.5 in)	56 years	73 of 100 (Major)
21 April 2025	Bolsoj Uluj, RU	daily rain	8.9 mm (0.35 in)	0.6 mm (0.02 in)	43 years	20 of 100 (Routine)
16 April 2025	Bolsoj Uluj, RU	daily rain	7.9 mm (0.31 in)	3.8 mm (0.15 in)	36 years	20 of 100 (Routine)
14 February 2025	Bolsoj Uluj, RU	daily rain (Tie)	3.6 mm (0.14 in)	tie	4 years	2 of 100 (Routine)
13 February 2025	Bolsoj Uluj, RU	daily rain	3.0 mm (0.12 in)	0.3 mm (0.01 in)	64 years	20 of 100 (Routine)
11 August 2024	Bolsoj Uluj, RU	monthly rain	57.9 mm (2.3 in)	9.9 mm (0.39 in)	0 years	33 of 100 (Routine)
19 July 2024	Bolsoj Uluj, RU	daily rain	14.5 mm (0.6 in)	1.5 mm (0.06 in)	5 years	10 of 100 (Routine)
4 July 2024	Bolsoj Uluj, RU	daily rain	23.1 mm (0.9 in)	19.0 mm (0.7 in)	50 years	20 of 100 (Routine)
7 December 2023	Bolsoj Uluj, RU	daily rain	4.8 mm (0.19 in)	1.2 mm (0.05 in)	62 years	20 of 100 (Routine)
1 December 2023	Bolsoj Uluj, RU	daily rain	6.4 mm (0.25 in)	1.3 mm (0.05 in)	65 years	20 of 100 (Routine)
26 November 2023	Bolsoj Uluj, RU	daily rain	6.6 mm (0.26 in)	1.4 mm (0.06 in)	40 years	20 of 100 (Routine)
13 October 2023	Bolsoj Uluj, RU	daily rain	7.1 mm (0.28 in)	0.9 mm (0.04 in)	33 years	20 of 100 (Routine)
15 August 2023	Bolsoj Uluj, RU	monthly rain	48.0 mm (1.9 in)	3.6 mm (0.14 in)	31 years	32 of 100 (Routine)
14 July 2023	Bolsoj Uluj, RU	daily rain	15.0 mm (0.6 in)	4.0 mm (0.16 in)	38 years	20 of 100 (Routine)
25 June 2023	Bolsoj Uluj, RU	daily rain	18.0 mm (0.7 in)	0.9 mm (0.04 in)	33 years	18 of 100 (Routine)
8 March 2023	Bolsoj Uluj, RU	daily rain	8.9 mm (0.35 in)	4.0 mm (0.16 in)	57 years	20 of 100 (Routine)
4 March 2023	Bolsoj Uluj, RU	daily rain	4.3 mm (0.17 in)	1.8 mm (0.07 in)	64 years	20 of 100 (Routine)
15 January 2023	Bolsoj Uluj, RU	daily rain	5.1 mm (0.20 in)	0.1 mm (0.00 in)	60 years	20 of 100 (Routine)

Extremes by Year

1948 to 2025

Yearly extremes at Bolsoj Uluj: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.6 C (94.3 F)	2023	32.0 C (89.6 F)	19
Coldest night (TNn)	-44.2 C (-47.6 F)	2018	-37.8 C (-36.0 F)	19
Wettest day (Rx1day)	99.1 mm (3.9 in)	2017	25.4 mm (1.0 in)	59
Wettest five days (Rx5day)	122.2 mm (4.8 in)	2017	44.2 mm (1.7 in)	54
Longest dry spell (CDD)	38 days	1988	19 days	58

Hottest day (TXx)

The hottest day of the year at Bolsoj Uluj, 1948 to 2025. The record is 34.6 C (94.3 F) in 2023, marked on the chart; the median year is 32.0 C (89.6 F).

Hottest day (TXx) at Bolsoj Uluj by year
Year	Hottest day (TXx)
1948	23.9 C (75.0 F)
1949	25.0 C (77.0 F)
1950	27.8 C (82.0 F)
1951	32.2 C (90.0 F)
1952	21.1 C (70.0 F)
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1994	n/a
1995	n/a
1996	n/a
2012	32.1 C (89.8 F)
2013	27.4 C (81.3 F)
2014	33.7 C (92.7 F)
2015	32.0 C (89.6 F)
2016	30.3 C (86.5 F)
2017	32.9 C (91.2 F)
2018	32.0 C (89.6 F)
2019	31.8 C (89.2 F)
2020	32.8 C (91.0 F)
2021	30.5 C (86.9 F)
2022	30.2 C (86.4 F)
2023	34.6 C (94.3 F)
2024	34.5 C (94.1 F)
2025	32.7 C (90.9 F)

Coldest night (TNn)

The coldest night of the year at Bolsoj Uluj, 1948 to 2025. The record is -44.2 C (-47.6 F) in 2018, marked on the chart; the median year is -37.8 C (-36.0 F).

Coldest night (TNn) at Bolsoj Uluj by year
Year	Coldest night (TNn)
1948	-27.2 C (-17.0 F)
1949	-42.8 C (-45.0 F)
1950	-33.9 C (-29.0 F)
1951	-37.8 C (-36.0 F)
1952	-12.2 C (10.0 F)
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1994	n/a
1995	n/a
1996	n/a
2012	-39.1 C (-38.4 F)
2013	-32.9 C (-27.2 F)
2014	-36.7 C (-34.1 F)
2015	-30.8 C (-23.4 F)
2016	-41.2 C (-42.2 F)
2017	-39.2 C (-38.6 F)
2018	-44.2 C (-47.6 F)
2019	-43.1 C (-45.6 F)
2020	-43.7 C (-46.7 F)
2021	-39.9 C (-39.8 F)
2022	-35.0 C (-31.0 F)
2023	-41.2 C (-42.2 F)
2024	-36.2 C (-33.2 F)
2025	-29.3 C (-20.7 F)

Wettest day (Rx1day)

The wettest day of the year at Bolsoj Uluj, 1948 to 2025. The record is 99.1 mm (3.9 in) in 2017, marked on the chart; the median year is 25.4 mm (1.0 in).

Wettest day (Rx1day) at Bolsoj Uluj by year
Year	Wettest day (Rx1day)
1948	4.1 mm (0.16 in)
1949	7.9 mm (0.31 in)
1950	7.1 mm (0.28 in)
1951	1.5 mm (0.06 in)
1952	1.0 mm (0.04 in)
1955	31.2 mm (1.2 in)
1956	18.1 mm (0.7 in)
1957	32.2 mm (1.3 in)
1958	29.1 mm (1.1 in)
1959	37.3 mm (1.5 in)
1960	20.7 mm (0.8 in)
1961	28.0 mm (1.1 in)
1962	14.6 mm (0.6 in)
1963	13.5 mm (0.5 in)
1964	23.8 mm (0.9 in)
1965	27.7 mm (1.1 in)
1966	25.4 mm (1.0 in)
1967	38.1 mm (1.5 in)
1968	39.8 mm (1.6 in)
1969	28.4 mm (1.1 in)
1970	28.8 mm (1.1 in)
1971	29.8 mm (1.2 in)
1972	19.1 mm (0.8 in)
1973	19.2 mm (0.8 in)
1974	27.7 mm (1.1 in)
1975	32.4 mm (1.3 in)
1976	17.7 mm (0.7 in)
1977	17.6 mm (0.7 in)
1978	20.9 mm (0.8 in)
1979	54.0 mm (2.1 in)
1980	25.4 mm (1.0 in)
1981	37.4 mm (1.5 in)
1982	24.5 mm (1.0 in)
1983	22.8 mm (0.9 in)
1984	24.7 mm (1.0 in)
1985	27.2 mm (1.1 in)
1986	21.8 mm (0.9 in)
1988	32.5 mm (1.3 in)
1989	17.1 mm (0.7 in)
1990	33.0 mm (1.3 in)
1991	24.3 mm (1.0 in)
1992	44.4 mm (1.7 in)
1994	38.3 mm (1.5 in)
1995	19.8 mm (0.8 in)
1996	16.1 mm (0.6 in)
2012	19.1 mm (0.8 in)
2013	31.0 mm (1.2 in)
2014	31.0 mm (1.2 in)
2015	37.1 mm (1.5 in)
2016	18.0 mm (0.7 in)
2017	99.1 mm (3.9 in)
2018	36.1 mm (1.4 in)
2019	18.0 mm (0.7 in)
2020	27.9 mm (1.1 in)
2021	18.0 mm (0.7 in)
2022	17.0 mm (0.7 in)
2023	48.0 mm (1.9 in)
2024	57.9 mm (2.3 in)
2025	26.9 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Bolsoj Uluj, 1948 to 2025. The record is 122.2 mm (4.8 in) in 2017, marked on the chart; the median year is 44.2 mm (1.7 in).

Wettest five days (Rx5day) at Bolsoj Uluj by year
Year	Wettest five days (Rx5day)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1955	34.9 mm (1.4 in)
1956	31.6 mm (1.2 in)
1957	54.2 mm (2.1 in)
1958	53.6 mm (2.1 in)
1959	38.2 mm (1.5 in)
1960	50.2 mm (2.0 in)
1961	31.6 mm (1.2 in)
1962	40.0 mm (1.6 in)
1963	28.9 mm (1.1 in)
1964	57.1 mm (2.2 in)
1965	36.0 mm (1.4 in)
1966	28.6 mm (1.1 in)
1967	46.7 mm (1.8 in)
1968	50.9 mm (2.0 in)
1969	54.6 mm (2.1 in)
1970	56.9 mm (2.2 in)
1971	55.0 mm (2.2 in)
1972	35.1 mm (1.4 in)
1973	36.5 mm (1.4 in)
1974	41.3 mm (1.6 in)
1975	58.0 mm (2.3 in)
1976	23.8 mm (0.9 in)
1977	34.0 mm (1.3 in)
1978	36.8 mm (1.4 in)
1979	66.7 mm (2.6 in)
1980	28.8 mm (1.1 in)
1981	55.6 mm (2.2 in)
1982	41.6 mm (1.6 in)
1983	41.6 mm (1.6 in)
1984	48.6 mm (1.9 in)
1985	53.4 mm (2.1 in)
1986	30.3 mm (1.2 in)
1988	62.3 mm (2.5 in)
1989	29.5 mm (1.2 in)
1990	61.5 mm (2.4 in)
1991	34.1 mm (1.3 in)
1992	114.0 mm (4.5 in)
1994	65.2 mm (2.6 in)
1995	38.8 mm (1.5 in)
1996	28.6 mm (1.1 in)
2012	33.5 mm (1.3 in)
2013	58.8 mm (2.3 in)
2014	73.8 mm (2.9 in)
2015	71.7 mm (2.8 in)
2016	24.1 mm (0.9 in)
2017	122.2 mm (4.8 in)
2018	49.3 mm (1.9 in)
2019	35.8 mm (1.4 in)
2020	59.4 mm (2.3 in)
2021	38.2 mm (1.5 in)
2022	48.6 mm (1.9 in)
2023	63.2 mm (2.5 in)
2024	99.3 mm (3.9 in)
2025	31.0 mm (1.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Bolsoj Uluj, 1948 to 2025. The record is 38 days in 1988, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Bolsoj Uluj by year
Year	Longest dry spell (CDD)
1948	1 day
1949	1 day
1950	1 day
1951	1 day
1952	n/a
1955	26 days
1956	19 days
1957	24 days
1958	16 days
1959	16 days
1960	23 days
1961	19 days
1962	14 days
1963	15 days
1964	19 days
1965	21 days
1966	16 days
1967	23 days
1968	24 days
1969	14 days
1970	16 days
1971	25 days
1972	20 days
1973	30 days
1974	15 days
1975	21 days
1976	17 days
1977	17 days
1978	25 days
1979	15 days
1980	36 days
1981	17 days
1982	36 days
1983	25 days
1984	19 days
1985	22 days
1986	20 days
1988	38 days
1989	23 days
1990	23 days
1991	16 days
1992	22 days
1994	26 days
1995	23 days
1996	30 days
2012	8 days
2013	10 days
2014	16 days
2015	20 days
2016	21 days
2017	28 days
2018	17 days
2019	26 days
2020	13 days
2021	18 days
2022	17 days
2023	12 days
2024	17 days
2025	12 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

48 years, 1955 to 2023

A day with at least 26.0 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 76.8 mm (3.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Bolsoj Uluj: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	26.0 mm (1.0 in)
5 years	36.3 mm (1.4 in)
10 years	44.2 mm (1.7 in)
25 years	55.9 mm (2.2 in)
50 years	65.8 mm (2.6 in)	Longer than the 48 years of record
100 years	76.8 mm (3.0 in)	Longer than the 48 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, 48 years of values from 1955 to 2023.

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: 99.1 mm (3.9 in) in 2017; 54.0 mm (2.1 in) in 1979; 48.0 mm (1.9 in) in 2023.

Download the Data

Data for Bolsoj Uluj standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bolsoj Uluj 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).