Osmjany Weather Records (BOM00026736)

Record envelope, standing records and threshold days for Osmjany (BOM00026736), Belarus, with 47 years of record.

Key Facts for Osmjany

Osmjany (BOM00026736) is a weather station in Belarus at 54.43 latitude and 25.93 longitude, 211 m (692 ft) above sea level.
The station reports from 1963 to 2009, 47 years of record.
1,452 records set at Osmjany still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Osmjany set a daily record precipitation of 8.1 mm (0.32 in) on 28 March 2009.

About the Station

Location: Belarus, 54.43 latitude, 25.93 longitude.
Elevation: 211 m (692 ft).
Period of record: 1963 to 2009, 47 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 Osmjany. 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 Osmjany, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	3.0 C (37.4 F)	-32.2 C (-26.0 F)	n/a	n/a
Feb	6.0 C (42.8 F)	-27.2 C (-17.0 F)	n/a	n/a
Mar	14.0 C (57.2 F)	-23.0 C (-9.4 F)	n/a	n/a
Apr	20.0 C (68.0 F)	-9.0 C (15.8 F)	n/a	n/a
May	30.0 C (86.0 F)	-3.0 C (26.6 F)	n/a	n/a
Jun	29.0 C (84.2 F)	3.0 C (37.4 F)	n/a	n/a
Jul	30.0 C (86.0 F)	5.0 C (41.0 F)	n/a	n/a
Aug	30.0 C (86.0 F)	5.0 C (41.0 F)	n/a	n/a
Sep	26.0 C (78.8 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	22.0 C (71.6 F)	-6.0 C (21.2 F)	n/a	n/a
Nov	19.0 C (66.2 F)	-16.0 C (3.2 F)	n/a	n/a
Dec	7.0 C (44.6 F)	-31.0 C (-23.8 F)	n/a	n/a

Which Years Hold Standing Records

1,452 standing records

1,452 records at Osmjany still stand. 1978 holds the most, with 222.

All-Time Record Progression

1 new records

1 all-time records were set at Osmjany between 9 August 2005 and 9 August 2005. Each dot is a new record.

Wettest Day of Each Month

Aug: 95.9 mm (3.8 in)

The wettest day on record for each calendar month at Osmjany. The most was 95.9 mm (3.8 in) on 9 August 2005.

Record daily precipitation for each month at Osmjany
Month	Record daily precipitation (mm)	Date
Jan	19.6 mm (0.8 in)	26 January 2008
Feb	12.8 mm (0.5 in)	24 February 1999
Mar	15.9 mm (0.6 in)	21 March 2004
Apr	30.4 mm (1.2 in)	12 April 1977
May	37.1 mm (1.5 in)	16 May 1977
Jun	73.5 mm (2.9 in)	30 June 1989
Jul	52.6 mm (2.1 in)	24 July 1993
Aug	95.9 mm (3.8 in)	9 August 2005
Sep	46.9 mm (1.8 in)	29 September 1998
Oct	37.0 mm (1.5 in)	8 October 2002
Nov	48.0 mm (1.9 in)	11 November 1975
Dec	22.0 mm (0.9 in)	14 December 2003

Period of Record Coverage

1969 to 1981

12 years of record at Osmjany, 1969 to 1981. 12 years have data for under 90 percent of days and are left out of rankings: 1969, 1970, 1971, 1973, 1974, 1975, 1976, 1977 and others.

Days with data per year at Osmjany
Year	Days with data	Share of year	Complete
1969	115	32%	No
1970	106	29%	No
1971	19	5%	No
1973	107	29%	No
1974	163	45%	No
1975	77	21%	No
1976	117	32%	No
1977	80	22%	No
1978	156	43%	No
1979	135	37%	No
1980	164	45%	No
1981	167	46%	No

Latest Records

Latest records at Osmjany
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 March 2009	Osmjany, BY	daily rain	8.1 mm (0.32 in)	0.6 mm (0.02 in)	12 years	9 of 100 (Routine)
4 February 2009	Osmjany, BY	daily rain	8.1 mm (0.32 in)	1.4 mm (0.06 in)	5 years	11 of 100 (Routine)
17 October 2008	Osmjany, BY	daily rain	15.3 mm (0.6 in)	6.4 mm (0.25 in)	19 years	20 of 100 (Routine)
21 August 2008	Osmjany, BY	daily rain	13.8 mm (0.5 in)	0.4 mm (0.02 in)	40 years	16 of 100 (Routine)
15 August 2008	Osmjany, BY	daily rain	15.5 mm (0.6 in)	7.1 mm (0.28 in)	38 years	20 of 100 (Routine)
24 May 2008	Osmjany, BY	daily rain	33.4 mm (1.3 in)	6.2 mm (0.24 in)	6 years	15 of 100 (Routine)
19 May 2008	Osmjany, BY	daily rain (Tie)	16.4 mm (0.6 in)	tie	7 years	1 of 100 (Routine)
10 April 2008	Osmjany, BY	daily rain	27.4 mm (1.1 in)	20.2 mm (0.8 in)	35 years	54 of 100 (Notable)
7 April 2008	Osmjany, BY	daily rain	18.9 mm (0.7 in)	7.2 mm (0.28 in)	4 years	20 of 100 (Routine)
2 March 2008	Osmjany, BY	daily rain	7.2 mm (0.28 in)	0.9 mm (0.04 in)	43 years	19 of 100 (Routine)
26 January 2008	Osmjany, BY	monthly rain	19.6 mm (0.8 in)	5.9 mm (0.23 in)	12 years	20 of 100 (Routine)
25 January 2008	Osmjany, BY	daily rain	8.2 mm (0.32 in)	1.9 mm (0.07 in)	14 years	16 of 100 (Routine)
3 November 2007	Osmjany, BY	daily rain	5.7 mm (0.22 in)	0.8 mm (0.03 in)	8 years	7 of 100 (Routine)
7 July 2007	Osmjany, BY	daily rain	30.7 mm (1.2 in)	3.1 mm (0.12 in)	29 years	16 of 100 (Routine)
31 May 2007	Osmjany, BY	daily rain	32.7 mm (1.3 in)	5.8 mm (0.23 in)	16 years	18 of 100 (Routine)
1 February 2007	Osmjany, BY	daily rain	11.6 mm (0.5 in)	5.1 mm (0.20 in)	27 years	20 of 100 (Routine)
23 January 2007	Osmjany, BY	daily rain	10.0 mm (0.4 in)	3.2 mm (0.13 in)	13 years	20 of 100 (Routine)
19 January 2007	Osmjany, BY	daily rain	13.3 mm (0.5 in)	8.9 mm (0.35 in)	24 years	20 of 100 (Routine)
13 January 2007	Osmjany, BY	daily rain	8.2 mm (0.32 in)	1.0 mm (0.04 in)	40 years	20 of 100 (Routine)
12 January 2007	Osmjany, BY	daily rain	7.5 mm (0.30 in)	0.7 mm (0.03 in)	13 years	11 of 100 (Routine)

Extremes by Year

1963 to 2009

Yearly extremes at Osmjany: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	30.0 C (86.0 F)	1975	27.5 C (81.5 F)	12
Coldest night (TNn)	-32.2 C (-26.0 F)	1970	-23.5 C (-10.3 F)	12
Wettest day (Rx1day)	95.9 mm (3.8 in)	2005	32.7 mm (1.3 in)	45
Wettest five days (Rx5day)	194.7 mm (7.7 in)	2005	49.5 mm (1.9 in)	45
Longest dry spell (CDD)	35 days	2000	19 days	45

Hottest day (TXx)

The hottest day of the year at Osmjany, 1963 to 2009. The record is 30.0 C (86.0 F) in 1975, marked on the chart; the median year is 27.5 C (81.5 F).

Hottest day (TXx) at Osmjany by year
Year	Hottest day (TXx)
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	27.2 C (81.0 F)
1970	27.8 C (82.0 F)
1971	27.2 C (81.0 F)
1972	n/a
1973	28.0 C (82.4 F)
1974	26.0 C (78.8 F)
1975	30.0 C (86.0 F)
1976	30.0 C (86.0 F)
1977	27.0 C (80.6 F)
1978	27.0 C (80.6 F)
1979	29.0 C (84.2 F)
1980	27.0 C (80.6 F)
1981	29.0 C (84.2 F)
1982	n/a
1983	n/a
1984	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a

Coldest night (TNn)

The coldest night of the year at Osmjany, 1963 to 2009. The record is -32.2 C (-26.0 F) in 1970, marked on the chart; the median year is -23.5 C (-10.3 F).

Coldest night (TNn) at Osmjany by year
Year	Coldest night (TNn)
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	-27.2 C (-17.0 F)
1970	-32.2 C (-26.0 F)
1971	-16.1 C (3.0 F)
1972	n/a
1973	-13.0 C (8.6 F)
1974	-10.0 C (14.0 F)
1975	-15.0 C (5.0 F)
1976	-22.0 C (-7.6 F)
1977	-24.0 C (-11.2 F)
1978	-31.0 C (-23.8 F)
1979	-27.0 C (-16.6 F)
1980	-23.0 C (-9.4 F)
1981	-25.0 C (-13.0 F)
1982	n/a
1983	n/a
1984	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a

Wettest day (Rx1day)

The wettest day of the year at Osmjany, 1963 to 2009. The record is 95.9 mm (3.8 in) in 2005, marked on the chart; the median year is 32.7 mm (1.3 in).

Wettest day (Rx1day) at Osmjany by year
Year	Wettest day (Rx1day)
1963	30.6 mm (1.2 in)
1964	34.1 mm (1.3 in)
1965	28.1 mm (1.1 in)
1966	17.9 mm (0.7 in)
1967	28.2 mm (1.1 in)
1968	30.8 mm (1.2 in)
1969	26.2 mm (1.0 in)
1970	25.7 mm (1.0 in)
1971	30.4 mm (1.2 in)
1972	23.8 mm (0.9 in)
1973	28.2 mm (1.1 in)
1974	37.0 mm (1.5 in)
1975	48.0 mm (1.9 in)
1976	23.6 mm (0.9 in)
1977	37.1 mm (1.5 in)
1978	40.9 mm (1.6 in)
1979	20.4 mm (0.8 in)
1980	36.9 mm (1.5 in)
1981	37.1 mm (1.5 in)
1982	19.5 mm (0.8 in)
1983	16.5 mm (0.6 in)
1984	20.5 mm (0.8 in)
1987	45.9 mm (1.8 in)
1988	22.8 mm (0.9 in)
1989	73.5 mm (2.9 in)
1990	39.5 mm (1.6 in)
1991	26.9 mm (1.1 in)
1992	40.4 mm (1.6 in)
1993	52.6 mm (2.1 in)
1994	33.7 mm (1.3 in)
1995	30.1 mm (1.2 in)
1996	20.1 mm (0.8 in)
1997	36.3 mm (1.4 in)
1998	46.9 mm (1.8 in)
1999	23.2 mm (0.9 in)
2000	46.1 mm (1.8 in)
2001	25.1 mm (1.0 in)
2002	37.0 mm (1.5 in)
2003	43.2 mm (1.7 in)
2004	40.3 mm (1.6 in)
2005	95.9 mm (3.8 in)
2006	77.5 mm (3.1 in)
2007	32.7 mm (1.3 in)
2008	33.4 mm (1.3 in)
2009	13.8 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Osmjany, 1963 to 2009. The record is 194.7 mm (7.7 in) in 2005, marked on the chart; the median year is 49.5 mm (1.9 in).

Wettest five days (Rx5day) at Osmjany by year
Year	Wettest five days (Rx5day)
1963	45.0 mm (1.8 in)
1964	49.5 mm (1.9 in)
1965	52.7 mm (2.1 in)
1966	47.2 mm (1.9 in)
1967	53.3 mm (2.1 in)
1968	56.6 mm (2.2 in)
1969	49.2 mm (1.9 in)
1970	44.5 mm (1.8 in)
1971	47.0 mm (1.9 in)
1972	40.5 mm (1.6 in)
1973	59.1 mm (2.3 in)
1974	72.9 mm (2.9 in)
1975	55.4 mm (2.2 in)
1976	35.9 mm (1.4 in)
1977	94.2 mm (3.7 in)
1978	39.8 mm (1.6 in)
1979	33.0 mm (1.3 in)
1980	69.8 mm (2.7 in)
1981	15.9 mm (0.6 in)
1982	33.6 mm (1.3 in)
1983	35.1 mm (1.4 in)
1984	40.5 mm (1.6 in)
1987	61.3 mm (2.4 in)
1988	47.2 mm (1.9 in)
1989	76.6 mm (3.0 in)
1990	65.6 mm (2.6 in)
1991	47.0 mm (1.9 in)
1992	78.1 mm (3.1 in)
1993	62.7 mm (2.5 in)
1994	42.9 mm (1.7 in)
1995	39.2 mm (1.5 in)
1996	38.4 mm (1.5 in)
1997	45.4 mm (1.8 in)
1998	60.9 mm (2.4 in)
1999	43.7 mm (1.7 in)
2000	121.0 mm (4.8 in)
2001	32.5 mm (1.3 in)
2002	66.3 mm (2.6 in)
2003	62.8 mm (2.5 in)
2004	60.7 mm (2.4 in)
2005	194.7 mm (7.7 in)
2006	140.2 mm (5.5 in)
2007	76.6 mm (3.0 in)
2008	56.7 mm (2.2 in)
2009	16.0 mm (0.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Osmjany, 1963 to 2009. The record is 35 days in 2000, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Osmjany by year
Year	Longest dry spell (CDD)
1963	16 days
1964	28 days
1965	25 days
1966	15 days
1967	15 days
1968	22 days
1969	19 days
1970	20 days
1971	33 days
1972	34 days
1973	17 days
1974	30 days
1975	10 days
1976	15 days
1977	17 days
1978	14 days
1979	17 days
1980	17 days
1981	9 days
1982	19 days
1983	14 days
1984	28 days
1987	22 days
1988	12 days
1989	19 days
1990	15 days
1991	14 days
1992	17 days
1993	24 days
1994	21 days
1995	18 days
1996	23 days
1997	17 days
1998	21 days
1999	22 days
2000	35 days
2001	17 days
2002	21 days
2003	20 days
2004	14 days
2005	22 days
2006	29 days
2007	16 days
2008	17 days
2009	26 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

35 years, 1963 to 2008

A day with at least 32.2 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 104.0 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Osmjany: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	32.2 mm (1.3 in)
5 years	45.5 mm (1.8 in)
10 years	56.2 mm (2.2 in)
25 years	72.6 mm (2.9 in)
50 years	87.2 mm (3.4 in)	Longer than the 35 years of record
100 years	104.0 mm (4.1 in)	Longer than the 35 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, 35 years of values from 1963 to 2008.

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: 95.9 mm (3.8 in) in 2005; 77.5 mm (3.1 in) in 2006; 73.5 mm (2.9 in) in 1989.

Download the Data

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