Zanjan Weather Records (IRM00040729)

Record envelope, standing records and threshold days for Zanjan (IRM00040729), Iran, with 53 years of record.

Key Facts for Zanjan

Zanjan (IRM00040729) is a weather station in Iran at 36.77 latitude and 48.36 longitude, 1,640 m (5,382 ft) above sea level.
The station reports from 1973 to 2025, 53 years of record.
1,464 records set at Zanjan still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Iran, 36.77 latitude, 48.36 longitude.
Elevation: 1,640 m (5,382 ft).
Period of record: 1973 to 2025, 53 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

16 days at or beyond a record

The band shows the record high and record low for each calendar day at Zanjan. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Zanjan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.9 C (62.4 F)	-26.0 C (-14.8 F)	10.7 C (51.3 F)	-11.3 C (11.7 F)
Feb	20.8 C (69.4 F)	-27.0 C (-16.6 F)	10.2 C (50.4 F)	-19.5 C (-3.1 F)
Mar	27.2 C (81.0 F)	-19.6 C (-3.3 F)	22.1 C (71.8 F)	-9.2 C (15.4 F)
Apr	31.0 C (87.8 F)	-10.7 C (12.7 F)	26.2 C (79.2 F)	-2.9 C (26.8 F)
May	34.4 C (93.9 F)	-2.1 C (28.2 F)	32.3 C (90.1 F)	3.1 C (37.6 F)
Jun	38.2 C (100.8 F)	1.6 C (34.9 F)	33.3 C (91.9 F)	4.4 C (39.9 F)
Jul	40.5 C (104.9 F)	7.4 C (45.3 F)	37.7 C (99.9 F)	12.6 C (54.7 F)
Aug	40.0 C (104.0 F)	3.0 C (37.4 F)	39.5 C (103.1 F)	12.7 C (54.9 F)
Sep	37.5 C (99.5 F)	0.8 C (33.4 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-4.0 C (24.8 F)	n/a	n/a
Nov	28.0 C (82.4 F)	-15.2 C (4.6 F)	n/a	n/a
Dec	19.9 C (67.8 F)	-24.8 C (-12.6 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Zanjan still stand. 2017 holds the most, with 82.

Standing records at Zanjan by the year they were set
Year set	Standing records
1973	28
1974	14
1976	3
1977	11
1978	24
1979	6
1980	11
1989	1
1990	6
1991	8
1992	65
1993	1
1995	1
1997	1
1998	1
1999	17
2000	37
2001	45
2002	48
2003	40
2004	48
2005	48
2006	43
2007	44
2008	62
2009	35
2010	62
2011	51
2012	37
2013	52
2014	36
2015	75
2016	53
2017	82
2018	48
2019	48
2020	49
2021	57
2022	51
2023	36
2024	36
2025	43

Wettest Day of Each Month

Jun: 63.0 mm (2.5 in)

The wettest day on record for each calendar month at Zanjan. The most was 63.0 mm (2.5 in) on 24 June 2010.

Record daily precipitation for each month at Zanjan
Month	Record daily precipitation (mm)	Date
Jan	19.8 mm (0.8 in)	29 January 2019
Feb	24.9 mm (1.0 in)	26 February 2008
Mar	45.0 mm (1.8 in)	29 March 1998
Apr	37.1 mm (1.5 in)	6 April 2011
May	44.7 mm (1.8 in)	15 May 2007
Jun	63.0 mm (2.5 in)	24 June 2010
Jul	59.9 mm (2.4 in)	15 July 2010
Aug	22.4 mm (0.9 in)	18 August 2009
Sep	13.2 mm (0.5 in)	6 September 2000
Oct	50.0 mm (2.0 in)	15 October 2007
Nov	29.2 mm (1.1 in)	27 November 2020
Dec	33.8 mm (1.3 in)	6 December 2013

Period of Record Coverage

1973 to 2025

44 years of record at Zanjan, 1973 to 2025. 38 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 Zanjan
Year	Days with data	Share of year	Complete
1973	99	27%	No
1974	43	12%	No
1975	25	7%	No
1976	54	15%	No
1977	51	14%	No
1978	166	45%	No
1979	31	8%	No
1980	54	15%	No
1989	2	1%	No
1990	16	4%	No
1991	76	21%	No
1992	118	32%	No
1993	4	1%	No
1994	2	1%	No
1995	3	1%	No
1997	5	1%	No
1998	2	1%	No
1999	78	21%	No
2000	273	75%	No
2001	294	81%	No
2002	328	90%	No
2003	248	68%	No
2004	266	73%	No
2005	312	85%	No
2006	332	91%	Yes
2007	340	93%	Yes
2008	349	95%	Yes
2009	316	87%	No
2010	273	75%	No
2011	281	77%	No
2012	290	79%	No
2013	262	72%	No
2014	269	74%	No
2015	352	96%	Yes
2016	355	97%	Yes
2017	359	98%	Yes
2018	325	89%	No
2019	312	85%	No
2020	322	88%	No
2021	299	82%	No
2022	318	87%	No
2023	307	84%	No
2024	317	87%	No
2025	185	51%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1973 to 2025

Yearly extremes at Zanjan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.5 C (104.9 F)	2015	37.6 C (99.7 F)	44
Coldest night (TNn)	-27.0 C (-16.6 F)	1974	-15.4 C (4.3 F)	45
Wettest day (Rx1day)	63.0 mm (2.5 in)	2010	22.1 mm (0.9 in)	37
Wettest five days (Rx5day)	122.9 mm (4.8 in)	2010	35.3 mm (1.4 in)	35
Longest dry spell (CDD)	169 days	2022	36 days	37

Hottest day (TXx)

The hottest day of the year at Zanjan, 1973 to 2025. The record is 40.5 C (104.9 F) in 2015, marked on the chart; the median year is 37.6 C (99.7 F).

Hottest day (TXx) at Zanjan by year
Year	Hottest day (TXx)
1973	38.0 C (100.4 F)
1974	35.0 C (95.0 F)
1975	37.0 C (98.6 F)
1976	37.0 C (98.6 F)
1977	40.0 C (104.0 F)
1978	38.0 C (100.4 F)
1979	37.0 C (98.6 F)
1980	38.0 C (100.4 F)
1989	0.6 C (33.1 F)
1990	34.4 C (93.9 F)
1991	39.2 C (102.6 F)
1992	34.8 C (94.6 F)
1993	33.0 C (91.4 F)
1994	30.8 C (87.4 F)
1995	34.4 C (93.9 F)
1996	n/a
1997	30.0 C (86.0 F)
1998	34.8 C (94.6 F)
1999	30.4 C (86.7 F)
2000	37.6 C (99.7 F)
2001	37.2 C (99.0 F)
2002	35.2 C (95.4 F)
2003	38.2 C (100.8 F)
2004	35.4 C (95.7 F)
2005	36.8 C (98.2 F)
2006	37.0 C (98.6 F)
2007	35.6 C (96.1 F)
2008	37.6 C (99.7 F)
2009	38.2 C (100.8 F)
2010	40.0 C (104.0 F)
2011	36.4 C (97.5 F)
2012	35.4 C (95.7 F)
2013	38.4 C (101.1 F)
2014	39.5 C (103.1 F)
2015	40.5 C (104.9 F)
2016	39.3 C (102.7 F)
2017	39.2 C (102.6 F)
2018	40.0 C (104.0 F)
2019	39.7 C (103.5 F)
2020	38.9 C (102.0 F)
2021	38.3 C (100.9 F)
2022	39.4 C (102.9 F)
2023	38.1 C (100.6 F)
2024	39.6 C (103.3 F)
2025	39.5 C (103.1 F)

Coldest night (TNn)

The coldest night of the year at Zanjan, 1973 to 2025. The record is -27.0 C (-16.6 F) in 1974, marked on the chart; the median year is -15.4 C (4.3 F).

Coldest night (TNn) at Zanjan by year
Year	Coldest night (TNn)
1973	-23.0 C (-9.4 F)
1974	-27.0 C (-16.6 F)
1975	-14.0 C (6.8 F)
1976	-8.0 C (17.6 F)
1977	-19.0 C (-2.2 F)
1978	-15.0 C (5.0 F)
1979	-8.0 C (17.6 F)
1980	-14.0 C (6.8 F)
1989	-15.6 C (3.9 F)
1990	-20.4 C (-4.7 F)
1991	-16.0 C (3.2 F)
1992	-25.6 C (-14.1 F)
1993	-11.6 C (11.1 F)
1994	-1.6 C (29.1 F)
1995	10.4 C (50.7 F)
1996	9.0 C (48.2 F)
1997	3.0 C (37.4 F)
1998	2.0 C (35.6 F)
1999	-17.3 C (0.9 F)
2000	-15.4 C (4.3 F)
2001	-15.6 C (3.9 F)
2002	-17.0 C (1.4 F)
2003	-12.6 C (9.3 F)
2004	-13.0 C (8.6 F)
2005	-20.6 C (-5.1 F)
2006	-24.8 C (-12.6 F)
2007	-25.0 C (-13.0 F)
2008	-22.2 C (-8.0 F)
2009	-14.6 C (5.7 F)
2010	-15.4 C (4.3 F)
2011	-23.0 C (-9.4 F)
2012	-20.6 C (-5.1 F)
2013	-18.6 C (-1.5 F)
2014	-14.8 C (5.4 F)
2015	-12.1 C (10.2 F)
2016	-13.0 C (8.6 F)
2017	-15.6 C (3.9 F)
2018	-13.2 C (8.2 F)
2019	-10.7 C (12.7 F)
2020	-21.0 C (-5.8 F)
2021	-12.6 C (9.3 F)
2022	-20.9 C (-5.6 F)
2023	-13.5 C (7.7 F)
2024	-19.5 C (-3.1 F)
2025	-19.5 C (-3.1 F)

Wettest day (Rx1day)

The wettest day of the year at Zanjan, 1973 to 2025. The record is 63.0 mm (2.5 in) in 2010, marked on the chart; the median year is 22.1 mm (0.9 in).

Wettest day (Rx1day) at Zanjan 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	0.0 mm (0.00 in)
1990	0.0 mm (0.00 in)
1991	7.1 mm (0.28 in)
1992	20.1 mm (0.8 in)
1993	1.0 mm (0.04 in)
1994	6.1 mm (0.24 in)
1995	7.9 mm (0.31 in)
1996	18.5 mm (0.7 in)
1997	20.1 mm (0.8 in)
1998	45.0 mm (1.8 in)
1999	46.0 mm (1.8 in)
2000	15.2 mm (0.6 in)
2001	11.2 mm (0.4 in)
2002	22.1 mm (0.9 in)
2003	28.4 mm (1.1 in)
2004	15.7 mm (0.6 in)
2005	22.1 mm (0.9 in)
2006	25.1 mm (1.0 in)
2007	50.0 mm (2.0 in)
2008	50.0 mm (2.0 in)
2009	28.2 mm (1.1 in)
2010	63.0 mm (2.5 in)
2011	37.1 mm (1.5 in)
2012	35.8 mm (1.4 in)
2013	33.8 mm (1.3 in)
2014	29.2 mm (1.1 in)
2015	24.1 mm (0.9 in)
2016	18.5 mm (0.7 in)
2017	13.5 mm (0.5 in)
2018	24.1 mm (0.9 in)
2019	22.1 mm (0.9 in)
2020	29.2 mm (1.1 in)
2021	13.7 mm (0.5 in)
2022	14.5 mm (0.6 in)
2023	38.1 mm (1.5 in)
2024	25.4 mm (1.0 in)
2025	31.8 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Zanjan, 1973 to 2025. The record is 122.9 mm (4.8 in) in 2010, marked on the chart; the median year is 35.3 mm (1.4 in).

Wettest five days (Rx5day) at Zanjan 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	n/a
1991	13.0 mm (0.5 in)
1992	10.9 mm (0.4 in)
1993	0.0 mm (0.00 in)
1994	12.2 mm (0.5 in)
1995	2.0 mm (0.08 in)
1996	23.5 mm (0.9 in)
1997	14.0 mm (0.6 in)
1998	17.3 mm (0.7 in)
1999	52.7 mm (2.1 in)
2000	15.5 mm (0.6 in)
2001	10.2 mm (0.4 in)
2002	19.4 mm (0.8 in)
2003	57.7 mm (2.3 in)
2004	18.5 mm (0.7 in)
2005	41.1 mm (1.6 in)
2006	35.0 mm (1.4 in)
2007	61.2 mm (2.4 in)
2008	50.0 mm (2.0 in)
2009	35.3 mm (1.4 in)
2010	122.9 mm (4.8 in)
2011	44.2 mm (1.7 in)
2012	55.4 mm (2.2 in)
2013	43.0 mm (1.7 in)
2014	38.6 mm (1.5 in)
2015	46.2 mm (1.8 in)
2016	33.5 mm (1.3 in)
2017	27.7 mm (1.1 in)
2018	42.5 mm (1.7 in)
2019	33.8 mm (1.3 in)
2020	54.7 mm (2.2 in)
2021	17.0 mm (0.7 in)
2022	37.4 mm (1.5 in)
2023	51.1 mm (2.0 in)
2024	42.9 mm (1.7 in)
2025	43.7 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Zanjan, 1973 to 2025. The record is 169 days in 2022, marked on the chart; the median year is 36 days.

Longest dry spell (CDD) at Zanjan 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	1 day
1990	2 days
1991	3 days
1992	7 days
1993	6 days
1994	14 days
1995	14 days
1996	12 days
1997	10 days
1998	9 days
1999	6 days
2000	55 days
2001	29 days
2002	46 days
2003	37 days
2004	40 days
2005	31 days
2006	51 days
2007	30 days
2008	36 days
2009	29 days
2010	61 days
2011	34 days
2012	33 days
2013	56 days
2014	45 days
2015	63 days
2016	122 days
2017	76 days
2018	78 days
2019	67 days
2020	38 days
2021	84 days
2022	169 days
2023	75 days
2024	81 days
2025	34 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 Zanjan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Zanjan 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).