Arak Weather Records (IRM00040769)

Record envelope, standing records and threshold days for Arak (IRM00040769), Iran, with 53 years of record.

Key Facts for Arak

Arak (IRM00040769) is a weather station in Iran at 34.14 latitude and 49.85 longitude, 1,662 m (5,452 ft) above sea level.
The station reports from 1973 to 2025, 53 years of record.
1,464 records set at Arak still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Arak set a daily record precipitation of 10.9 mm (0.4 in) on 4 April 2025.

About the Station

Location: Iran, 34.14 latitude, 49.85 longitude.
Elevation: 1,662 m (5,452 ft).
Period of record: 1973 to 2025, 53 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

19 days at or beyond a record

The band shows the record high and record low for each calendar day at Arak. The lines show the 2026 daily maximum and minimum. 19 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Arak, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.2 C (64.8 F)	-32.7 C (-26.9 F)	12.2 C (54.0 F)	-10.4 C (13.3 F)
Feb	23.6 C (74.5 F)	-25.2 C (-13.4 F)	13.2 C (55.8 F)	-10.7 C (12.7 F)
Mar	27.8 C (82.0 F)	-22.0 C (-7.6 F)	22.5 C (72.5 F)	-0.5 C (31.1 F)
Apr	31.0 C (87.8 F)	-11.2 C (11.8 F)	30.0 C (86.0 F)	0.3 C (32.5 F)
May	37.0 C (98.6 F)	0.1 C (32.2 F)	35.4 C (95.7 F)	8.8 C (47.8 F)
Jun	40.2 C (104.4 F)	9.8 C (49.6 F)	37.0 C (98.6 F)	11.9 C (53.4 F)
Jul	42.7 C (108.9 F)	9.7 C (49.5 F)	40.4 C (104.7 F)	13.8 C (56.8 F)
Aug	41.0 C (105.8 F)	10.8 C (51.4 F)	39.0 C (102.2 F)	17.3 C (63.1 F)
Sep	38.0 C (100.4 F)	5.0 C (41.0 F)	n/a	n/a
Oct	31.5 C (88.7 F)	-1.2 C (29.8 F)	n/a	n/a
Nov	25.0 C (77.0 F)	-14.0 C (6.8 F)	n/a	n/a
Dec	21.8 C (71.2 F)	-19.5 C (-3.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Arak still stand. 2008 holds the most, with 78.

Standing records at Arak by the year they were set
Year set	Standing records
1973	29
1974	28
1975	15
1976	17
1977	25
1978	46
1979	29
1980	25
1989	5
1990	11
1991	20
1992	57
1993	3
1994	1
1995	1
1996	1
1999	8
2000	48
2001	40
2002	33
2003	36
2004	50
2005	50
2006	39
2007	49
2008	78
2009	39
2010	60
2011	44
2012	28
2013	46
2014	33
2015	59
2016	60
2017	55
2018	35
2019	37
2020	42
2021	32
2022	33
2023	23
2024	55
2025	39

Wettest Day of Each Month

Jun: 117.1 mm (4.6 in)

The wettest day on record for each calendar month at Arak. The most was 117.1 mm (4.6 in) on 10 June 2012.

Record daily precipitation for each month at Arak
Month	Record daily precipitation (mm)	Date
Jan	78.0 mm (3.1 in)	5 January 1996
Feb	102.1 mm (4.0 in)	25 February 1991
Mar	46.2 mm (1.8 in)	13 March 2005
Apr	106.9 mm (4.2 in)	25 April 2007
May	50.0 mm (2.0 in)	21 May 1990
Jun	117.1 mm (4.6 in)	10 June 2012
Jul	59.9 mm (2.4 in)	14 July 2010
Aug	10.9 mm (0.4 in)	2 August 1998
Sep	50.0 mm (2.0 in)	10 September 2007
Oct	70.6 mm (2.8 in)	11 October 1998
Nov	53.1 mm (2.1 in)	8 November 1999
Dec	25.1 mm (1.0 in)	2 December 2016

Period of Record Coverage

1973 to 2025

44 years of record at Arak, 1973 to 2025. 27 years have data for under 90 percent of days and are left out of rankings: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980 and others.

Days with data per year at Arak
Year	Days with data	Share of year	Complete
1973	154	42%	No
1974	132	36%	No
1975	81	22%	No
1976	129	35%	No
1977	130	36%	No
1978	220	60%	No
1979	156	43%	No
1980	163	45%	No
1989	43	12%	No
1990	60	16%	No
1991	140	38%	No
1992	104	28%	No
1993	7	2%	No
1994	6	2%	No
1995	1	0%	No
1996	3	1%	No
1997	5	1%	No
1999	71	19%	No
2000	271	74%	No
2001	281	77%	No
2002	336	92%	Yes
2003	275	75%	No
2004	274	75%	No
2005	322	88%	No
2006	329	90%	Yes
2007	348	95%	Yes
2008	341	93%	Yes
2009	329	90%	Yes
2010	324	89%	No
2011	353	97%	Yes
2012	356	97%	Yes
2013	356	98%	Yes
2014	353	97%	Yes
2015	359	98%	Yes
2016	360	98%	Yes
2017	359	98%	Yes
2018	339	93%	Yes
2019	348	95%	Yes
2020	351	96%	Yes
2021	320	88%	No
2022	342	94%	Yes
2023	330	90%	Yes
2024	300	82%	No
2025	171	47%	No

Latest Records

Latest records at Arak
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 April 2025	Arak, IR	daily rain	10.9 mm (0.4 in)	0.7 mm (0.03 in)	20 years	9 of 100 (Routine)
7 February 2025	Arak, IR	daily rain	12.2 mm (0.5 in)	6.6 mm (0.26 in)	15 years	12 of 100 (Routine)
6 February 2025	Arak, IR	daily rain	4.6 mm (0.18 in)	2.8 mm (0.11 in)	21 years	11 of 100 (Routine)
27 January 2025	Arak, IR	daily rain	11.2 mm (0.4 in)	0.8 mm (0.03 in)	21 years	10 of 100 (Routine)
1 January 2025	Arak, IR	daily rain	2.8 mm (0.11 in)	1.0 mm (0.04 in)	11 years	7 of 100 (Routine)
14 December 2024	Arak, IR	daily rain	16.5 mm (0.6 in)	6.6 mm (0.26 in)	11 years	17 of 100 (Routine)
15 June 2024	Arak, IR	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	34 years	13 of 100 (Routine)
23 May 2024	Arak, IR	daily rain	29.0 mm (1.1 in)	25.7 mm (1.0 in)	6 years	39 of 100 (Notable)
3 May 2024	Arak, IR	daily rain	3.3 mm (0.13 in)	0.3 mm (0.01 in)	7 years	5 of 100 (Routine)
22 April 2024	Arak, IR	daily rain	3.3 mm (0.13 in)	2.0 mm (0.08 in)	5 years	5 of 100 (Routine)
10 April 2024	Arak, IR	daily rain	25.4 mm (1.0 in)	12.2 mm (0.5 in)	4 years	14 of 100 (Routine)
19 March 2024	Arak, IR	daily rain	6.1 mm (0.24 in)	1.3 mm (0.05 in)	22 years	10 of 100 (Routine)
11 March 2024	Arak, IR	daily rain	7.6 mm (0.30 in)	3.5 mm (0.14 in)	19 years	12 of 100 (Routine)
5 March 2024	Arak, IR	daily rain	16.5 mm (0.6 in)	11.7 mm (0.5 in)	11 years	19 of 100 (Routine)
29 February 2024	Arak, IR	daily rain	2.8 mm (0.11 in)	1.8 mm (0.07 in)	28 years	12 of 100 (Routine)
16 February 2024	Arak, IR	daily rain	29.0 mm (1.1 in)	25.7 mm (1.0 in)	12 years	27 of 100 (Routine)

Extremes by Year

1973 to 2025

Yearly extremes at Arak: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.7 C (108.9 F)	2024	39.8 C (103.6 F)	44
Coldest night (TNn)	-32.7 C (-26.9 F)	2008	-14.1 C (6.6 F)	44
Wettest day (Rx1day)	117.1 mm (4.6 in)	2012	35.6 mm (1.4 in)	37
Wettest five days (Rx5day)	124.0 mm (4.9 in)	1991	39.7 mm (1.6 in)	36
Longest dry spell (CDD)	187 days	2017	40 days	37

Hottest day (TXx)

The hottest day of the year at Arak, 1973 to 2025. The record is 42.7 C (108.9 F) in 2024, marked on the chart; the median year is 39.8 C (103.6 F).

Hottest day (TXx) at Arak by year
Year	Hottest day (TXx)
1973	41.0 C (105.8 F)
1974	37.0 C (98.6 F)
1975	41.0 C (105.8 F)
1976	40.0 C (104.0 F)
1977	42.0 C (107.6 F)
1978	41.0 C (105.8 F)
1979	40.0 C (104.0 F)
1980	39.0 C (102.2 F)
1989	39.5 C (103.1 F)
1990	37.0 C (98.6 F)
1991	38.0 C (100.4 F)
1992	38.0 C (100.4 F)
1993	37.0 C (98.6 F)
1994	20.0 C (68.0 F)
1995	11.0 C (51.8 F)
1996	29.5 C (85.1 F)
1997	33.0 C (91.4 F)
1998	n/a
1999	30.0 C (86.0 F)
2000	38.4 C (101.1 F)
2001	38.6 C (101.5 F)
2002	39.6 C (103.3 F)
2003	40.0 C (104.0 F)
2004	38.8 C (101.8 F)
2005	39.6 C (103.3 F)
2006	40.6 C (105.1 F)
2007	39.0 C (102.2 F)
2008	40.6 C (105.1 F)
2009	40.6 C (105.1 F)
2010	40.4 C (104.7 F)
2011	39.8 C (103.6 F)
2012	40.2 C (104.4 F)
2013	41.6 C (106.9 F)
2014	40.4 C (104.7 F)
2015	40.2 C (104.4 F)
2016	39.8 C (103.6 F)
2017	38.8 C (101.8 F)
2018	39.8 C (103.6 F)
2019	40.2 C (104.4 F)
2020	39.6 C (103.3 F)
2021	39.8 C (103.6 F)
2022	40.8 C (105.4 F)
2023	39.9 C (103.8 F)
2024	42.7 C (108.9 F)
2025	40.4 C (104.7 F)

Coldest night (TNn)

The coldest night of the year at Arak, 1973 to 2025. The record is -32.7 C (-26.9 F) in 2008, marked on the chart; the median year is -14.1 C (6.6 F).

Coldest night (TNn) at Arak by year
Year	Coldest night (TNn)
1973	-17.0 C (1.4 F)
1974	-25.0 C (-13.0 F)
1975	-12.0 C (10.4 F)
1976	-6.0 C (21.2 F)
1977	-18.0 C (-0.4 F)
1978	-8.0 C (17.6 F)
1979	-10.0 C (14.0 F)
1980	-20.0 C (-4.0 F)
1989	-20.0 C (-4.0 F)
1990	-19.5 C (-3.1 F)
1991	-17.5 C (0.5 F)
1992	-25.5 C (-13.9 F)
1993	-17.5 C (0.5 F)
1994	0.0 C (32.0 F)
1995	-6.5 C (20.3 F)
1996	-7.0 C (19.4 F)
1997	6.4 C (43.5 F)
1998	n/a
1999	-7.8 C (18.0 F)
2000	-22.6 C (-8.7 F)
2001	-17.8 C (0.0 F)
2002	-17.8 C (0.0 F)
2003	-14.6 C (5.7 F)
2004	-11.6 C (11.1 F)
2005	-23.6 C (-10.5 F)
2006	-20.4 C (-4.7 F)
2007	-15.4 C (4.3 F)
2008	-32.7 C (-26.9 F)
2009	-16.0 C (3.2 F)
2010	-12.4 C (9.7 F)
2011	-17.0 C (1.4 F)
2012	-12.0 C (10.4 F)
2013	-11.6 C (11.1 F)
2014	-22.0 C (-7.6 F)
2015	-8.8 C (16.2 F)
2016	-14.0 C (6.8 F)
2017	-14.2 C (6.4 F)
2018	-11.6 C (11.1 F)
2019	-8.0 C (17.6 F)
2020	-7.6 C (18.3 F)
2021	-8.8 C (16.2 F)
2022	-11.4 C (11.5 F)
2023	-15.8 C (3.6 F)
2024	-9.5 C (14.9 F)
2025	-10.7 C (12.7 F)

Wettest day (Rx1day)

The wettest day of the year at Arak, 1973 to 2025. The record is 117.1 mm (4.6 in) in 2012, marked on the chart; the median year is 35.6 mm (1.4 in).

Wettest day (Rx1day) at Arak by year
Year	Wettest day (Rx1day)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1989	15.0 mm (0.6 in)
1990	50.0 mm (2.0 in)
1991	102.1 mm (4.0 in)
1992	50.0 mm (2.0 in)
1993	29.0 mm (1.1 in)
1994	50.0 mm (2.0 in)
1995	37.1 mm (1.5 in)
1996	78.0 mm (3.1 in)
1997	22.6 mm (0.9 in)
1998	70.6 mm (2.8 in)
1999	53.1 mm (2.1 in)
2000	38.1 mm (1.5 in)
2001	20.1 mm (0.8 in)
2002	19.3 mm (0.8 in)
2003	25.4 mm (1.0 in)
2004	31.2 mm (1.2 in)
2005	46.2 mm (1.8 in)
2006	34.5 mm (1.4 in)
2007	106.9 mm (4.2 in)
2008	16.5 mm (0.6 in)
2009	35.6 mm (1.4 in)
2010	59.9 mm (2.4 in)
2011	38.9 mm (1.5 in)
2012	117.1 mm (4.6 in)
2013	24.9 mm (1.0 in)
2014	32.8 mm (1.3 in)
2015	23.9 mm (0.9 in)
2016	46.5 mm (1.8 in)
2017	38.9 mm (1.5 in)
2018	35.3 mm (1.4 in)
2019	55.9 mm (2.2 in)
2020	64.0 mm (2.5 in)
2021	21.6 mm (0.9 in)
2022	34.0 mm (1.3 in)
2023	19.8 mm (0.8 in)
2024	29.0 mm (1.1 in)
2025	18.5 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Arak, 1973 to 2025. The record is 124.0 mm (4.9 in) in 1991, marked on the chart; the median year is 39.7 mm (1.6 in).

Wettest five days (Rx5day) at Arak by year
Year	Wettest five days (Rx5day)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1989	n/a
1990	5.0 mm (0.20 in)
1991	124.0 mm (4.9 in)
1992	47.3 mm (1.9 in)
1993	0.0 mm (0.00 in)
1994	35.3 mm (1.4 in)
1995	9.1 mm (0.36 in)
1996	98.0 mm (3.9 in)
1997	34.1 mm (1.3 in)
1998	2.3 mm (0.09 in)
1999	61.7 mm (2.4 in)
2000	18.3 mm (0.7 in)
2001	16.5 mm (0.6 in)
2002	32.0 mm (1.3 in)
2003	45.7 mm (1.8 in)
2004	59.2 mm (2.3 in)
2005	72.7 mm (2.9 in)
2006	39.7 mm (1.6 in)
2007	114.6 mm (4.5 in)
2008	31.5 mm (1.2 in)
2009	43.7 mm (1.7 in)
2010	24.6 mm (1.0 in)
2011	52.9 mm (2.1 in)
2012	117.1 mm (4.6 in)
2013	35.6 mm (1.4 in)
2014	57.9 mm (2.3 in)
2015	28.2 mm (1.1 in)
2016	83.9 mm (3.3 in)
2017	67.6 mm (2.7 in)
2018	49.0 mm (1.9 in)
2019	93.5 mm (3.7 in)
2020	90.0 mm (3.5 in)
2021	28.0 mm (1.1 in)
2022	36.3 mm (1.4 in)
2023	39.1 mm (1.5 in)
2024	39.6 mm (1.6 in)
2025	35.6 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Arak, 1973 to 2025. The record is 187 days in 2017, marked on the chart; the median year is 40 days.

Longest dry spell (CDD) at Arak by year
Year	Longest dry spell (CDD)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1989	4 days
1990	10 days
1991	17 days
1992	7 days
1993	6 days
1994	5 days
1995	16 days
1996	29 days
1997	18 days
1998	10 days
1999	8 days
2000	41 days
2001	20 days
2002	69 days
2003	40 days
2004	38 days
2005	55 days
2006	131 days
2007	28 days
2008	56 days
2009	18 days
2010	40 days
2011	66 days
2012	89 days
2013	48 days
2014	20 days
2015	35 days
2016	141 days
2017	187 days
2018	102 days
2019	119 days
2020	102 days
2021	90 days
2022	91 days
2023	77 days
2024	83 days
2025	55 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.

Download the Data

Data for Arak standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Arak 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 2026-10-12 (12 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).