Koolan Weather Records (KZ000038343)

Record envelope, standing records and threshold days for Koolan (KZ000038343), Kazakhstan, with 72 years of record.

Key Facts for Koolan

Koolan (KZ000038343) is a weather station in Kazakhstan at 42.95 latitude and 72.75 longitude, 683 m (2,241 ft) above sea level.
The station reports from 1955 to 2026, 72 years of record.
1,464 records set at Koolan still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Koolan set a daily record precipitation of 16.6 mm (0.7 in) on 7 December 1991.

About the Station

Location: Kazakhstan, 42.95 latitude, 72.75 longitude.
Elevation: 683 m (2,241 ft).
Period of record: 1955 to 2026, 72 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

18 days at or beyond a record

The band shows the record high and record low for each calendar day at Koolan. The lines show the 2026 daily maximum and minimum. 18 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Koolan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.7 C (65.7 F)	-31.4 C (-24.5 F)	10.6 C (51.1 F)	-15.4 C (4.3 F)
Feb	24.0 C (75.2 F)	-31.7 C (-25.1 F)	19.3 C (66.7 F)	-17.2 C (1.0 F)
Mar	29.1 C (84.4 F)	-19.7 C (-3.5 F)	26.1 C (79.0 F)	-7.6 C (18.3 F)
Apr	33.5 C (92.3 F)	-15.0 C (5.0 F)	33.0 C (91.4 F)	2.8 C (37.0 F)
May	36.5 C (97.7 F)	-4.0 C (24.8 F)	36.5 C (97.7 F)	9.0 C (48.2 F)
Jun	41.7 C (107.1 F)	0.4 C (32.7 F)	36.5 C (97.7 F)	14.8 C (58.6 F)
Jul	41.1 C (106.0 F)	7.1 C (44.8 F)	38.2 C (100.8 F)	15.2 C (59.4 F)
Aug	40.1 C (104.2 F)	4.7 C (40.5 F)	35.9 C (96.6 F)	14.3 C (57.7 F)
Sep	37.4 C (99.3 F)	-3.9 C (25.0 F)	32.7 C (90.9 F)	6.7 C (44.1 F)
Oct	33.1 C (91.6 F)	-15.6 C (3.9 F)	24.0 C (75.2 F)	-0.5 C (31.1 F)
Nov	29.4 C (84.9 F)	-27.2 C (-17.0 F)	17.6 C (63.7 F)	-5.6 C (21.9 F)
Dec	19.0 C (66.2 F)	-33.3 C (-27.9 F)	13.4 C (56.1 F)	-15.6 C (3.9 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Koolan still stand. 2025 holds the most, with 112.

Standing records at Koolan by the year they were set
Year set	Standing records
1959	13
1960	18
1962	2
1963	2
1969	2
1970	4
1974	7
1975	23
1976	26
1977	17
1978	15
1979	15
1980	11
1981	11
1982	3
1984	1
1985	5
1986	4
1987	24
1988	38
1989	34
1990	5
2001	34
2002	38
2003	38
2004	34
2005	45
2006	46
2007	62
2008	45
2009	29
2010	51
2011	44
2012	48
2013	32
2014	59
2015	47
2016	52
2017	37
2018	59
2019	33
2020	37
2021	61
2022	48
2023	54
2024	39
2025	112

Wettest Day of Each Month

Apr: 48.8 mm (1.9 in)

The wettest day on record for each calendar month at Koolan. The most was 48.8 mm (1.9 in) on 29 April 1967.

Record daily precipitation for each month at Koolan
Month	Record daily precipitation (mm)	Date
Jan	47.0 mm (1.9 in)	25 January 1977
Feb	36.0 mm (1.4 in)	18 February 1966
Mar	35.2 mm (1.4 in)	3 March 1955
Apr	48.8 mm (1.9 in)	29 April 1967
May	41.0 mm (1.6 in)	24 May 1978
Jun	28.4 mm (1.1 in)	23 June 1987
Jul	24.1 mm (0.9 in)	5 July 1987
Aug	38.2 mm (1.5 in)	23 August 1965
Sep	20.7 mm (0.8 in)	20 September 1987
Oct	31.5 mm (1.2 in)	13 October 1984
Nov	22.4 mm (0.9 in)	18 November 1978
Dec	22.6 mm (0.9 in)	14 December 1970

Period of Record Coverage

1959 to 2025

49 years of record at Koolan, 1959 to 2025. 26 years have data for under 90 percent of days and are left out of rankings: 1959, 1960, 1961, 1962, 1963, 1969, 1970, 1973 and others.

Days with data per year at Koolan
Year	Days with data	Share of year	Complete
1959	45	12%	No
1960	62	17%	No
1961	19	5%	No
1962	26	7%	No
1963	6	2%	No
1969	38	10%	No
1970	23	6%	No
1973	9	2%	No
1974	73	20%	No
1975	146	40%	No
1976	241	66%	No
1977	213	58%	No
1978	238	65%	No
1979	182	50%	No
1980	123	34%	No
1981	154	42%	No
1982	24	7%	No
1984	6	2%	No
1985	65	18%	No
1986	31	8%	No
1987	108	30%	No
1988	277	76%	No
1989	253	69%	No
1990	88	24%	No
2001	160	44%	No
2002	327	90%	No
2003	348	95%	Yes
2004	348	95%	Yes
2005	352	96%	Yes
2006	354	97%	Yes
2007	350	96%	Yes
2008	342	93%	Yes
2009	346	95%	Yes
2010	348	95%	Yes
2011	346	95%	Yes
2012	354	97%	Yes
2013	356	98%	Yes
2014	340	93%	Yes
2015	339	93%	Yes
2016	355	97%	Yes
2017	351	96%	Yes
2018	346	95%	Yes
2019	354	97%	Yes
2020	348	95%	Yes
2021	350	96%	Yes
2022	353	97%	Yes
2023	346	95%	Yes
2024	334	91%	Yes
2025	346	95%	Yes

Latest Records

Latest records at Koolan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 December 1991	Koolan, KZ	daily rain	16.6 mm (0.7 in)	9.8 mm (0.39 in)	22 years	20 of 100 (Routine)
27 September 1991	Koolan, KZ	daily rain	9.5 mm (0.37 in)	0.8 mm (0.03 in)	17 years	9 of 100 (Routine)
23 July 1991	Koolan, KZ	daily rain	19.8 mm (0.8 in)	16.1 mm (0.6 in)	28 years	20 of 100 (Routine)
17 July 1991	Koolan, KZ	daily rain	3.3 mm (0.13 in)	1.2 mm (0.05 in)	22 years	12 of 100 (Routine)
17 June 1991	Koolan, KZ	daily rain	17.0 mm (0.7 in)	9.8 mm (0.39 in)	12 years	20 of 100 (Routine)
6 February 1991	Koolan, KZ	daily rain	4.1 mm (0.16 in)	2.8 mm (0.11 in)	8 years	12 of 100 (Routine)
14 November 1990	Koolan, KZ	daily rain	12.3 mm (0.5 in)	2.0 mm (0.08 in)	31 years	16 of 100 (Routine)
21 July 1990	Koolan, KZ	daily rain	1.6 mm (0.06 in)	0.4 mm (0.02 in)	20 years	10 of 100 (Routine)
20 July 1990	Koolan, KZ	daily rain	17.6 mm (0.7 in)	15.0 mm (0.6 in)	1 year	20 of 100 (Routine)
13 June 1990	Koolan, KZ	daily rain	17.5 mm (0.7 in)	12.7 mm (0.5 in)	27 years	20 of 100 (Routine)
6 January 1990	Koolan, KZ	daily rain	4.2 mm (0.17 in)	2.2 mm (0.09 in)	12 years	11 of 100 (Routine)
1 January 1990	Koolan, KZ	daily rain	4.7 mm (0.19 in)	0.1 mm (0.00 in)	34 years	13 of 100 (Routine)
22 November 1989	Koolan, KZ	daily rain	19.6 mm (0.8 in)	10.8 mm (0.4 in)	8 years	20 of 100 (Routine)
1 November 1989	Koolan, KZ	daily rain	14.1 mm (0.6 in)	5.1 mm (0.20 in)	16 years	18 of 100 (Routine)
31 October 1989	Koolan, KZ	daily rain	17.5 mm (0.7 in)	8.5 mm (0.33 in)	16 years	20 of 100 (Routine)
30 September 1989	Koolan, KZ	daily rain	6.4 mm (0.25 in)	3.6 mm (0.14 in)	3 years	11 of 100 (Routine)
24 September 1989	Koolan, KZ	daily rain	6.0 mm (0.24 in)	2.2 mm (0.09 in)	24 years	14 of 100 (Routine)
31 July 1989	Koolan, KZ	daily rain	7.9 mm (0.31 in)	7.7 mm (0.30 in)	23 years	20 of 100 (Routine)
15 May 1989	Koolan, KZ	daily rain	12.3 mm (0.5 in)	2.8 mm (0.11 in)	3 years	7 of 100 (Routine)
30 April 1989	Koolan, KZ	daily rain	8.9 mm (0.35 in)	4.0 mm (0.16 in)	8 years	11 of 100 (Routine)

Extremes by Year

1955 to 2026

Yearly extremes at Koolan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.4 C (108.3 F)	2026	38.0 C (100.4 F)	50
Coldest night (TNn)	-33.3 C (-27.9 F)	2001	-20.9 C (-5.6 F)	50
Wettest day (Rx1day)	48.8 mm (1.9 in)	1967	22.0 mm (0.9 in)	48
Wettest five days (Rx5day)	76.1 mm (3.0 in)	1955	38.9 mm (1.5 in)	40
Longest dry spell (CDD)	109 days	1978	39 days	48

Hottest day (TXx)

The hottest day of the year at Koolan, 1955 to 2026. The record is 42.4 C (108.3 F) in 2026, marked on the chart; the median year is 38.0 C (100.4 F).

Hottest day (TXx) at Koolan by year
Year	Hottest day (TXx)
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	36.1 C (97.0 F)
1960	37.2 C (99.0 F)
1961	37.2 C (99.0 F)
1962	32.8 C (91.0 F)
1963	35.0 C (95.0 F)
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	33.9 C (93.0 F)
1970	22.2 C (72.0 F)
1971	n/a
1972	n/a
1973	24.0 C (75.2 F)
1974	34.0 C (93.2 F)
1975	39.0 C (102.2 F)
1976	40.0 C (104.0 F)
1977	38.0 C (100.4 F)
1978	39.0 C (102.2 F)
1979	38.0 C (100.4 F)
1980	37.0 C (98.6 F)
1981	34.0 C (93.2 F)
1982	32.4 C (90.3 F)
1983	n/a
1984	17.3 C (63.1 F)
1985	37.2 C (99.0 F)
1986	37.2 C (99.0 F)
1987	35.0 C (95.0 F)
1988	38.7 C (101.7 F)
1989	37.2 C (99.0 F)
1990	39.2 C (102.6 F)
1991	n/a
2001	36.1 C (97.0 F)
2002	36.2 C (97.2 F)
2003	38.2 C (100.8 F)
2004	39.5 C (103.1 F)
2005	41.7 C (107.1 F)
2006	38.6 C (101.5 F)
2007	40.6 C (105.1 F)
2008	40.1 C (104.2 F)
2009	37.3 C (99.1 F)
2010	37.9 C (100.2 F)
2011	38.6 C (101.5 F)
2012	38.5 C (101.3 F)
2013	38.0 C (100.4 F)
2014	38.3 C (100.9 F)
2015	40.6 C (105.1 F)
2016	38.0 C (100.4 F)
2017	39.5 C (103.1 F)
2018	38.4 C (101.1 F)
2019	39.3 C (102.7 F)
2020	37.2 C (99.0 F)
2021	40.5 C (104.9 F)
2022	39.2 C (102.6 F)
2023	40.1 C (104.2 F)
2024	38.6 C (101.5 F)
2025	38.2 C (100.8 F)
2026	42.4 C (108.3 F)

Coldest night (TNn)

The coldest night of the year at Koolan, 1955 to 2026. The record is -33.3 C (-27.9 F) in 2001, marked on the chart; the median year is -20.9 C (-5.6 F).

Coldest night (TNn) at Koolan by year
Year	Coldest night (TNn)
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	-30.0 C (-22.0 F)
1960	-17.8 C (0.0 F)
1961	-12.8 C (9.0 F)
1962	-27.2 C (-17.0 F)
1963	-11.1 C (12.0 F)
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	-5.0 C (23.0 F)
1970	-17.8 C (0.0 F)
1971	n/a
1972	n/a
1973	-18.0 C (-0.4 F)
1974	-26.0 C (-14.8 F)
1975	-26.0 C (-14.8 F)
1976	-20.0 C (-4.0 F)
1977	-29.0 C (-20.2 F)
1978	-23.0 C (-9.4 F)
1979	-27.0 C (-16.6 F)
1980	-21.0 C (-5.8 F)
1981	-18.0 C (-0.4 F)
1982	-17.7 C (0.1 F)
1983	n/a
1984	-2.5 C (27.5 F)
1985	-13.1 C (8.4 F)
1986	-15.7 C (3.7 F)
1987	-15.6 C (3.9 F)
1988	-24.9 C (-12.8 F)
1989	-24.5 C (-12.1 F)
1990	-2.0 C (28.4 F)
1991	n/a
2001	-33.3 C (-27.9 F)
2002	-26.2 C (-15.2 F)
2003	-24.3 C (-11.7 F)
2004	-20.0 C (-4.0 F)
2005	-31.7 C (-25.1 F)
2006	-26.3 C (-15.3 F)
2007	-24.8 C (-12.6 F)
2008	-25.1 C (-13.2 F)
2009	-18.5 C (-1.3 F)
2010	-23.0 C (-9.4 F)
2011	-26.0 C (-14.8 F)
2012	-28.1 C (-18.6 F)
2013	-16.5 C (2.3 F)
2014	-26.7 C (-16.1 F)
2015	-20.6 C (-5.1 F)
2016	-19.7 C (-3.5 F)
2017	-20.1 C (-4.2 F)
2018	-31.4 C (-24.5 F)
2019	-16.9 C (1.6 F)
2020	-21.0 C (-5.8 F)
2021	-21.2 C (-6.2 F)
2022	-20.8 C (-5.4 F)
2023	-30.9 C (-23.6 F)
2024	-20.8 C (-5.4 F)
2025	-17.2 C (1.0 F)
2026	-16.3 C (2.7 F)

Wettest day (Rx1day)

The wettest day of the year at Koolan, 1955 to 2026. The record is 48.8 mm (1.9 in) in 1967, marked on the chart; the median year is 22.0 mm (0.9 in).

Wettest day (Rx1day) at Koolan by year
Year	Wettest day (Rx1day)
1955	35.2 mm (1.4 in)
1956	23.0 mm (0.9 in)
1957	24.4 mm (1.0 in)
1958	31.8 mm (1.3 in)
1959	19.8 mm (0.8 in)
1960	24.1 mm (0.9 in)
1961	15.3 mm (0.6 in)
1962	23.8 mm (0.9 in)
1963	23.5 mm (0.9 in)
1965	38.2 mm (1.5 in)
1966	36.0 mm (1.4 in)
1967	48.8 mm (1.9 in)
1968	35.9 mm (1.4 in)
1969	21.9 mm (0.9 in)
1970	31.5 mm (1.2 in)
1971	24.4 mm (1.0 in)
1972	24.5 mm (1.0 in)
1973	33.7 mm (1.3 in)
1974	39.6 mm (1.6 in)
1975	21.5 mm (0.8 in)
1976	23.9 mm (0.9 in)
1977	47.0 mm (1.9 in)
1978	41.0 mm (1.6 in)
1979	16.7 mm (0.7 in)
1980	22.1 mm (0.9 in)
1981	18.4 mm (0.7 in)
1982	20.1 mm (0.8 in)
1983	21.9 mm (0.9 in)
1984	31.5 mm (1.2 in)
1985	19.1 mm (0.8 in)
1986	31.8 mm (1.3 in)
1987	28.4 mm (1.1 in)
1988	27.8 mm (1.1 in)
1989	19.6 mm (0.8 in)
1990	17.6 mm (0.7 in)
1991	19.8 mm (0.8 in)
2001	n/a
2002	1.5 mm (0.06 in)
2003	0.0 mm (0.00 in)
2004	0.0 mm (0.00 in)
2005	0.0 mm (0.00 in)
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	0.5 mm (0.02 in)
2014	n/a
2015	0.0 mm (0.00 in)
2016	0.0 mm (0.00 in)
2017	0.0 mm (0.00 in)
2018	0.0 mm (0.00 in)
2019	n/a
2020	n/a
2021	0.0 mm (0.00 in)
2022	n/a
2023	0.0 mm (0.00 in)
2024	n/a
2025	n/a
2026	0.0 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at Koolan, 1955 to 2026. The record is 76.1 mm (3.0 in) in 1955, marked on the chart; the median year is 38.9 mm (1.5 in).

Wettest five days (Rx5day) at Koolan by year
Year	Wettest five days (Rx5day)
1955	76.1 mm (3.0 in)
1956	32.0 mm (1.3 in)
1957	29.2 mm (1.1 in)
1958	56.0 mm (2.2 in)
1959	48.7 mm (1.9 in)
1960	45.8 mm (1.8 in)
1961	25.0 mm (1.0 in)
1962	43.4 mm (1.7 in)
1963	31.4 mm (1.2 in)
1965	38.2 mm (1.5 in)
1966	40.4 mm (1.6 in)
1967	63.4 mm (2.5 in)
1968	61.8 mm (2.4 in)
1969	58.6 mm (2.3 in)
1970	55.7 mm (2.2 in)
1971	45.4 mm (1.8 in)
1972	42.4 mm (1.7 in)
1973	39.5 mm (1.6 in)
1974	51.7 mm (2.0 in)
1975	29.4 mm (1.2 in)
1976	46.2 mm (1.8 in)
1977	43.6 mm (1.7 in)
1978	44.6 mm (1.8 in)
1979	30.9 mm (1.2 in)
1980	39.7 mm (1.6 in)
1981	23.6 mm (0.9 in)
1982	34.0 mm (1.3 in)
1983	26.1 mm (1.0 in)
1984	32.9 mm (1.3 in)
1985	20.2 mm (0.8 in)
1986	68.6 mm (2.7 in)
1987	46.7 mm (1.8 in)
1988	35.4 mm (1.4 in)
1989	34.9 mm (1.4 in)
1990	23.8 mm (0.9 in)
1991	27.2 mm (1.1 in)
2001	n/a
2002	0.0 mm (0.00 in)
2003	0.0 mm (0.00 in)
2004	0.0 mm (0.00 in)
2005	0.0 mm (0.00 in)
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Koolan, 1955 to 2026. The record is 109 days in 1978, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Koolan by year
Year	Longest dry spell (CDD)
1955	41 days
1956	38 days
1957	19 days
1958	22 days
1959	44 days
1960	44 days
1961	21 days
1962	21 days
1963	37 days
1965	46 days
1966	38 days
1967	32 days
1968	58 days
1969	43 days
1970	40 days
1971	55 days
1972	45 days
1973	89 days
1974	59 days
1975	56 days
1976	56 days
1977	52 days
1978	109 days
1979	53 days
1980	75 days
1981	34 days
1982	54 days
1983	55 days
1984	83 days
1985	51 days
1986	52 days
1987	43 days
1988	26 days
1989	50 days
1990	36 days
1991	37 days
2001	n/a
2002	18 days
2003	13 days
2004	17 days
2005	24 days
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	2 days
2014	n/a
2015	1 day
2016	1 day
2017	1 day
2018	1 day
2019	n/a
2020	n/a
2021	1 day
2022	n/a
2023	1 day
2024	n/a
2025	n/a
2026	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.

Rainfall Return Levels

33 years, 1955 to 1991

A day with at least 25.4 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 55.3 mm (2.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Koolan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	25.4 mm (1.0 in)
5 years	32.7 mm (1.3 in)
10 years	37.9 mm (1.5 in)
25 years	44.6 mm (1.8 in)
50 years	49.9 mm (2.0 in)	Longer than the 33 years of record
100 years	55.3 mm (2.2 in)	Longer than the 33 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, 33 years of values from 1955 to 1991.

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: 48.8 mm (1.9 in) in 1967; 41.0 mm (1.6 in) in 1978; 39.6 mm (1.6 in) in 1974.

Download the Data

Data for Koolan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Koolan 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 2026-10-17 (17 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).