Chornobyl Weather Records (UPM00033231)

Record envelope, standing records and threshold days for Chornobyl (UPM00033231), Ukraine, with 62 years of record.

Key Facts for Chornobyl

Chornobyl (UPM00033231) is a weather station in Ukraine at 51.28 latitude and 30.23 longitude, 127 m (417 ft) above sea level.
The station reports from 1955 to 2016, 62 years of record.
1,464 records set at Chornobyl still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Chornobyl set a daily record precipitation of 21.1 mm (0.8 in) on 20 May 2016.

About the Station

Location: Ukraine, 51.28 latitude, 30.23 longitude.
Elevation: 127 m (417 ft).
Period of record: 1955 to 2016, 62 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 Chornobyl. 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 Chornobyl, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.2 C (68.4 F)	-29.7 C (-21.5 F)	n/a	n/a
Feb	17.0 C (62.6 F)	-32.8 C (-27.0 F)	n/a	n/a
Mar	22.6 C (72.7 F)	-20.0 C (-4.0 F)	n/a	n/a
Apr	26.6 C (79.9 F)	-9.0 C (15.8 F)	n/a	n/a
May	32.9 C (91.2 F)	-13.8 C (7.2 F)	n/a	n/a
Jun	34.0 C (93.2 F)	2.2 C (36.0 F)	n/a	n/a
Jul	35.2 C (95.4 F)	6.2 C (43.2 F)	n/a	n/a
Aug	36.3 C (97.3 F)	0.0 C (32.0 F)	n/a	n/a
Sep	35.9 C (96.6 F)	-1.6 C (29.1 F)	n/a	n/a
Oct	26.3 C (79.3 F)	-10.5 C (13.1 F)	n/a	n/a
Nov	19.6 C (67.3 F)	-20.0 C (-4.0 F)	n/a	n/a
Dec	11.3 C (52.3 F)	-30.8 C (-23.4 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chornobyl still stand. 2015 holds the most, with 82.

Standing records at Chornobyl by the year they were set
Year set	Standing records
1955	1
1956	10
1957	7
1958	5
1959	3
1969	31
1970	7
1971	2
1973	23
1974	20
1975	30
1976	43
1977	28
1978	36
1979	37
1980	46
1981	46
1982	3
1983	1
1984	29
1985	70
1986	17
1988	19
1989	29
1990	39
1991	44
1992	31
1993	72
1994	38
1995	22
1996	7
1997	7
1998	1
2000	77
2001	71
2002	69
2003	63
2004	37
2005	36
2006	54
2007	38
2008	36
2009	13
2012	16
2013	2
2014	34
2015	82
2016	32

Wettest Day of Each Month

Jun: 93.9 mm (3.7 in)

The wettest day on record for each calendar month at Chornobyl. The most was 93.9 mm (3.7 in) on 6 June 1975.

Record daily precipitation for each month at Chornobyl
Month	Record daily precipitation (mm)	Date
Jan	50.0 mm (2.0 in)	7 January 1994
Feb	27.6 mm (1.1 in)	18 February 1973
Mar	22.1 mm (0.9 in)	30 March 1966
Apr	25.0 mm (1.0 in)	29 April 2001
May	81.1 mm (3.2 in)	31 May 1983
Jun	93.9 mm (3.7 in)	6 June 1975
Jul	61.0 mm (2.4 in)	23 July 1973
Aug	70.7 mm (2.8 in)	31 August 1965
Sep	56.9 mm (2.2 in)	11 September 1993
Oct	61.0 mm (2.4 in)	7 October 1992
Nov	39.0 mm (1.5 in)	11 November 2007
Dec	31.0 mm (1.2 in)	11 December 2012

Period of Record Coverage

1955 to 2016

48 years of record at Chornobyl, 1955 to 2016. 46 years have data for under 90 percent of days and are left out of rankings: 1955, 1956, 1957, 1958, 1959, 1969, 1970, 1971 and others.

Days with data per year at Chornobyl
Year	Days with data	Share of year	Complete
1955	10	3%	No
1956	34	9%	No
1957	55	15%	No
1958	52	14%	No
1959	21	6%	No
1969	94	26%	No
1970	95	26%	No
1971	11	3%	No
1973	150	41%	No
1974	173	47%	No
1975	179	49%	No
1976	207	57%	No
1977	144	39%	No
1978	194	53%	No
1979	141	39%	No
1980	186	51%	No
1981	216	59%	No
1982	11	3%	No
1983	4	1%	No
1984	185	51%	No
1985	198	54%	No
1986	75	21%	No
1988	95	26%	No
1989	121	33%	No
1990	131	36%	No
1991	283	78%	No
1992	278	76%	No
1993	276	76%	No
1994	153	42%	No
1995	84	23%	No
1996	12	3%	No
1997	15	4%	No
1998	13	4%	No
2000	308	84%	No
2001	325	89%	No
2002	174	48%	No
2003	346	95%	Yes
2004	195	53%	No
2005	162	44%	No
2006	196	54%	No
2007	119	33%	No
2008	89	24%	No
2009	45	12%	No
2012	109	30%	No
2013	9	2%	No
2014	166	45%	No
2015	337	92%	Yes
2016	152	42%	No

Latest Records

Latest records at Chornobyl
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 2016	Chornobyl, UA	daily rain	21.1 mm (0.8 in)	0.1 mm (0.00 in)	15 years	10 of 100 (Routine)
17 May 2016	Chornobyl, UA	daily rain	16.0 mm (0.6 in)	2.3 mm (0.09 in)	40 years	20 of 100 (Routine)
26 April 2016	Chornobyl, UA	daily rain	17.0 mm (0.7 in)	9.6 mm (0.38 in)	12 years	20 of 100 (Routine)
1 March 2016	Chornobyl, UA	daily rain	16.0 mm (0.6 in)	11.9 mm (0.5 in)	40 years	20 of 100 (Routine)
11 February 2016	Chornobyl, UA	daily rain	19.1 mm (0.8 in)	10.1 mm (0.4 in)	30 years	20 of 100 (Routine)
16 January 2016	Chornobyl, UA	daily rain	11.9 mm (0.5 in)	3.2 mm (0.13 in)	32 years	20 of 100 (Routine)
28 December 2015	Chornobyl, UA	daily rain	7.9 mm (0.31 in)	1.4 mm (0.06 in)	56 years	20 of 100 (Routine)
21 October 2015	Chornobyl, UA	daily rain	29.0 mm (1.1 in)	4.1 mm (0.16 in)	34 years	22 of 100 (Routine)
6 September 2015	Chornobyl, UA	daily rain	25.9 mm (1.0 in)	4.8 mm (0.19 in)	21 years	18 of 100 (Routine)
15 May 2015	Chornobyl, UA	daily rain	17.3 mm (0.7 in)	5.2 mm (0.20 in)	52 years	20 of 100 (Routine)
5 February 2015	Chornobyl, UA	daily rain	7.9 mm (0.31 in)	2.2 mm (0.09 in)	52 years	20 of 100 (Routine)
23 January 2015	Chornobyl, UA	daily rain	8.9 mm (0.35 in)	4.6 mm (0.18 in)	32 years	20 of 100 (Routine)
20 January 2015	Chornobyl, UA	daily rain	10.9 mm (0.4 in)	4.5 mm (0.18 in)	8 years	20 of 100 (Routine)
10 January 2015	Chornobyl, UA	daily rain	3.3 mm (0.13 in)	1.3 mm (0.05 in)	41 years	20 of 100 (Routine)
23 September 2014	Chornobyl, UA	daily rain	23.1 mm (0.9 in)	14.1 mm (0.6 in)	40 years	20 of 100 (Routine)
22 December 2012	Chornobyl, UA	daily rain	13.2 mm (0.5 in)	3.0 mm (0.12 in)	42 years	20 of 100 (Routine)
11 December 2012	Chornobyl, UA	monthly rain	31.0 mm (1.2 in)	7.0 mm (0.28 in)	45 years	50 of 100 (Notable)
6 December 2012	Chornobyl, UA	daily rain	11.2 mm (0.4 in)	4.5 mm (0.18 in)	9 years	20 of 100 (Routine)
30 October 2012	Chornobyl, UA	daily rain	18.0 mm (0.7 in)	5.7 mm (0.22 in)	39 years	20 of 100 (Routine)
8 October 2012	Chornobyl, UA	daily rain	35.1 mm (1.4 in)	29.0 mm (1.1 in)	20 years	51 of 100 (Notable)

Extremes by Year

1955 to 2016

Yearly extremes at Chornobyl: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.3 C (97.3 F)	1992	30.0 C (86.0 F)	48
Coldest night (TNn)	-32.8 C (-27.0 F)	1970	-20.4 C (-4.7 F)	48
Wettest day (Rx1day)	93.9 mm (3.7 in)	1975	30.1 mm (1.2 in)	57
Wettest five days (Rx5day)	140.5 mm (5.5 in)	1975	56.5 mm (2.2 in)	45
Longest dry spell (CDD)	33 days	1963	14 days	54

Hottest day (TXx)

The hottest day of the year at Chornobyl, 1955 to 2016. The record is 36.3 C (97.3 F) in 1992, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at Chornobyl by year
Year	Hottest day (TXx)
1955	27.2 C (81.0 F)
1956	30.0 C (86.0 F)
1957	33.9 C (93.0 F)
1958	27.8 C (82.0 F)
1959	3.9 C (39.0 F)
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	28.9 C (84.0 F)
1970	32.2 C (90.0 F)
1971	23.9 C (75.0 F)
1972	n/a
1973	31.0 C (87.8 F)
1974	27.0 C (80.6 F)
1975	30.0 C (86.0 F)
1976	30.0 C (86.0 F)
1977	31.0 C (87.8 F)
1978	29.0 C (84.2 F)
1979	34.0 C (93.2 F)
1980	32.0 C (89.6 F)
1981	32.0 C (89.6 F)
1982	25.8 C (78.4 F)
1983	8.7 C (47.7 F)
1984	29.7 C (85.5 F)
1985	29.4 C (84.9 F)
1986	25.4 C (77.7 F)
1988	30.2 C (86.4 F)
1989	29.0 C (84.2 F)
1990	27.6 C (81.7 F)
1991	32.5 C (90.5 F)
1992	36.3 C (97.3 F)
1993	30.0 C (86.0 F)
1994	32.0 C (89.6 F)
1995	24.7 C (76.5 F)
1996	9.8 C (49.6 F)
1997	15.9 C (60.6 F)
1998	18.1 C (64.6 F)
2000	36.1 C (97.0 F)
2001	34.9 C (94.8 F)
2002	35.2 C (95.4 F)
2003	32.8 C (91.0 F)
2004	27.9 C (82.2 F)
2005	29.9 C (85.8 F)
2006	31.6 C (88.9 F)
2007	34.0 C (93.2 F)
2008	36.2 C (97.2 F)
2009	32.3 C (90.1 F)
2012	27.3 C (81.1 F)
2013	5.5 C (41.9 F)
2014	35.2 C (95.4 F)
2015	35.9 C (96.6 F)
2016	27.2 C (81.0 F)

Coldest night (TNn)

The coldest night of the year at Chornobyl, 1955 to 2016. The record is -32.8 C (-27.0 F) in 1970, marked on the chart; the median year is -20.4 C (-4.7 F).

Coldest night (TNn) at Chornobyl by year
Year	Coldest night (TNn)
1955	-18.9 C (-2.0 F)
1956	-18.9 C (-2.0 F)
1957	-17.8 C (0.0 F)
1958	-15.0 C (5.0 F)
1959	-13.9 C (7.0 F)
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	-26.1 C (-15.0 F)
1970	-32.8 C (-27.0 F)
1971	-18.9 C (-2.0 F)
1972	n/a
1973	-22.0 C (-7.6 F)
1974	-19.0 C (-2.2 F)
1975	-19.0 C (-2.2 F)
1976	-28.0 C (-18.4 F)
1977	-22.0 C (-7.6 F)
1978	-27.0 C (-16.6 F)
1979	-24.0 C (-11.2 F)
1980	-21.0 C (-5.8 F)
1981	-16.0 C (3.2 F)
1982	-3.8 C (25.2 F)
1983	-1.0 C (30.2 F)
1984	-15.2 C (4.6 F)
1985	-25.9 C (-14.6 F)
1986	-21.9 C (-7.4 F)
1988	-15.0 C (5.0 F)
1989	-15.8 C (3.6 F)
1990	-10.5 C (13.1 F)
1991	-23.0 C (-9.4 F)
1992	-16.5 C (2.3 F)
1993	-21.6 C (-6.9 F)
1994	-22.8 C (-9.0 F)
1995	-18.5 C (-1.3 F)
1996	-20.1 C (-4.2 F)
1997	-30.8 C (-23.4 F)
1998	-14.9 C (5.2 F)
2000	-22.0 C (-7.6 F)
2001	-22.6 C (-8.7 F)
2002	-29.4 C (-20.9 F)
2003	-20.7 C (-5.3 F)
2004	-19.6 C (-3.3 F)
2005	-26.2 C (-15.2 F)
2006	-29.7 C (-21.5 F)
2007	-21.6 C (-6.9 F)
2008	-12.8 C (9.0 F)
2009	-24.5 C (-12.1 F)
2012	-19.5 C (-3.1 F)
2013	-14.9 C (5.2 F)
2014	-17.8 C (0.0 F)
2015	-21.4 C (-6.5 F)
2016	-23.5 C (-10.3 F)

Wettest day (Rx1day)

The wettest day of the year at Chornobyl, 1955 to 2016. The record is 93.9 mm (3.7 in) in 1975, marked on the chart; the median year is 30.1 mm (1.2 in).

Wettest day (Rx1day) at Chornobyl by year
Year	Wettest day (Rx1day)
1955	n/a
1956	17.0 mm (0.7 in)
1957	7.1 mm (0.28 in)
1958	6.1 mm (0.24 in)
1959	24.4 mm (1.0 in)
1960	36.2 mm (1.4 in)
1961	47.0 mm (1.9 in)
1962	27.9 mm (1.1 in)
1963	23.1 mm (0.9 in)
1964	35.2 mm (1.4 in)
1965	70.7 mm (2.8 in)
1966	26.0 mm (1.0 in)
1967	42.2 mm (1.7 in)
1968	52.0 mm (2.0 in)
1969	30.1 mm (1.2 in)
1970	29.4 mm (1.2 in)
1971	52.2 mm (2.1 in)
1972	27.7 mm (1.1 in)
1973	61.0 mm (2.4 in)
1974	52.4 mm (2.1 in)
1975	93.9 mm (3.7 in)
1976	17.0 mm (0.7 in)
1977	30.1 mm (1.2 in)
1978	28.4 mm (1.1 in)
1979	26.5 mm (1.0 in)
1980	41.9 mm (1.6 in)
1981	47.6 mm (1.9 in)
1982	29.2 mm (1.1 in)
1983	81.1 mm (3.2 in)
1984	30.9 mm (1.2 in)
1985	34.7 mm (1.4 in)
1986	11.4 mm (0.4 in)
1988	32.3 mm (1.3 in)
1989	34.1 mm (1.3 in)
1990	34.4 mm (1.4 in)
1991	64.0 mm (2.5 in)
1992	61.0 mm (2.4 in)
1993	56.9 mm (2.2 in)
1994	50.0 mm (2.0 in)
1995	11.9 mm (0.5 in)
1996	11.9 mm (0.5 in)
1997	2.5 mm (0.10 in)
1998	8.9 mm (0.35 in)
2000	53.0 mm (2.1 in)
2001	26.0 mm (1.0 in)
2002	25.0 mm (1.0 in)
2003	47.0 mm (1.9 in)
2004	34.0 mm (1.3 in)
2005	29.0 mm (1.1 in)
2006	25.0 mm (1.0 in)
2007	39.0 mm (1.5 in)
2008	56.0 mm (2.2 in)
2009	17.0 mm (0.7 in)
2012	35.1 mm (1.4 in)
2013	3.0 mm (0.12 in)
2014	23.1 mm (0.9 in)
2015	29.0 mm (1.1 in)
2016	22.1 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chornobyl, 1955 to 2016. The record is 140.5 mm (5.5 in) in 1975, marked on the chart; the median year is 56.5 mm (2.2 in).

Wettest five days (Rx5day) at Chornobyl by year
Year	Wettest five days (Rx5day)
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	50.9 mm (2.0 in)
1960	48.0 mm (1.9 in)
1961	53.8 mm (2.1 in)
1962	46.5 mm (1.8 in)
1963	36.1 mm (1.4 in)
1964	68.9 mm (2.7 in)
1965	96.8 mm (3.8 in)
1966	48.9 mm (1.9 in)
1967	70.2 mm (2.8 in)
1968	94.0 mm (3.7 in)
1969	78.3 mm (3.1 in)
1970	41.5 mm (1.6 in)
1971	72.1 mm (2.8 in)
1972	40.8 mm (1.6 in)
1973	89.3 mm (3.5 in)
1974	68.1 mm (2.7 in)
1975	140.5 mm (5.5 in)
1976	34.1 mm (1.3 in)
1977	75.7 mm (3.0 in)
1978	61.8 mm (2.4 in)
1979	35.6 mm (1.4 in)
1980	69.2 mm (2.7 in)
1981	62.9 mm (2.5 in)
1982	56.5 mm (2.2 in)
1983	90.1 mm (3.5 in)
1984	43.5 mm (1.7 in)
1985	63.7 mm (2.5 in)
1986	21.7 mm (0.9 in)
1988	40.3 mm (1.6 in)
1989	62.0 mm (2.4 in)
1990	61.9 mm (2.4 in)
1991	81.0 mm (3.2 in)
1992	67.9 mm (2.7 in)
1993	79.0 mm (3.1 in)
1994	51.0 mm (2.0 in)
1995	5.9 mm (0.23 in)
1996	n/a
1997	n/a
1998	n/a
2000	76.4 mm (3.0 in)
2001	52.0 mm (2.0 in)
2002	n/a
2003	65.4 mm (2.6 in)
2004	17.4 mm (0.7 in)
2005	13.4 mm (0.5 in)
2006	18.8 mm (0.7 in)
2007	21.3 mm (0.8 in)
2008	7.6 mm (0.30 in)
2009	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	8.4 mm (0.33 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chornobyl, 1955 to 2016. The record is 33 days in 1963, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Chornobyl by year
Year	Longest dry spell (CDD)
1955	n/a
1956	1 day
1957	n/a
1958	1 day
1959	16 days
1960	21 days
1961	22 days
1962	20 days
1963	33 days
1964	27 days
1965	24 days
1966	11 days
1967	12 days
1968	15 days
1969	13 days
1970	8 days
1971	11 days
1972	17 days
1973	17 days
1974	18 days
1975	17 days
1976	13 days
1977	22 days
1978	14 days
1979	19 days
1980	18 days
1981	15 days
1982	25 days
1983	20 days
1984	24 days
1985	23 days
1986	28 days
1988	15 days
1989	27 days
1990	25 days
1991	17 days
1992	13 days
1993	18 days
1994	12 days
1995	2 days
1996	n/a
1997	1 day
1998	n/a
2000	3 days
2001	3 days
2002	2 days
2003	6 days
2004	3 days
2005	3 days
2006	4 days
2007	2 days
2008	3 days
2009	3 days
2012	2 days
2013	1 day
2014	1 day
2015	1 day
2016	1 day

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.

Download the Data

Data for Chornobyl standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chornobyl 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 2026-10-14 (14 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).