Deir Zzor Weather Records (SYM00040045)

Record envelope, standing records and threshold days for Deir Zzor (SYM00040045), Syria, with 56 years of record.

Key Facts for Deir Zzor

Deir Zzor (SYM00040045) is a weather station in Syria at 35.28 latitude and 40.18 longitude, 213 m (700 ft) above sea level.
The station reports from 1957 to 2012, 56 years of record.
1,464 records set at Deir Zzor still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Deir Zzor set a daily record high maximum temperature of 45.2 C (113.4 F) on 19 July 2012.

About the Station

Location: Syria, 35.28 latitude, 40.18 longitude.
Elevation: 213 m (700 ft).
Period of record: 1957 to 2012, 56 years.
Eligible elements: tmax, tmin.

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 Deir Zzor. 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 Deir Zzor, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.9 C (69.6 F)	-7.2 C (19.0 F)	n/a	n/a
Feb	27.0 C (80.6 F)	-7.8 C (18.0 F)	n/a	n/a
Mar	34.9 C (94.8 F)	-7.2 C (19.0 F)	n/a	n/a
Apr	39.5 C (103.1 F)	-0.5 C (31.1 F)	n/a	n/a
May	42.9 C (109.2 F)	9.4 C (48.9 F)	n/a	n/a
Jun	47.3 C (117.1 F)	10.2 C (50.4 F)	n/a	n/a
Jul	48.8 C (119.8 F)	16.4 C (61.5 F)	n/a	n/a
Aug	47.8 C (118.0 F)	13.4 C (56.1 F)	n/a	n/a
Sep	43.3 C (109.9 F)	8.0 C (46.4 F)	n/a	n/a
Oct	38.9 C (102.0 F)	3.8 C (38.8 F)	n/a	n/a
Nov	32.2 C (90.0 F)	-4.0 C (24.8 F)	n/a	n/a
Dec	26.4 C (79.5 F)	-6.0 C (21.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Deir Zzor still stand. 1998 holds the most, with 70.

Standing records at Deir Zzor by the year they were set
Year set	Standing records
1957	26
1958	47
1960	43
1961	19
1963	2
1964	8
1965	18
1966	14
1967	27
1973	32
1974	19
1975	25
1976	26
1977	15
1978	23
1979	16
1980	17
1981	29
1982	35
1983	29
1984	35
1985	35
1986	28
1987	27
1988	13
1989	18
1990	32
1991	32
1992	64
1993	28
1994	51
1995	32
1996	31
1997	54
1998	70
1999	30
2000	40
2001	44
2002	41
2003	41
2004	34
2005	18
2006	25
2007	18
2008	27
2009	27
2010	56
2011	23
2012	20

Wettest Day of Each Month

Nov: 112.0 mm (4.4 in)

The wettest day on record for each calendar month at Deir Zzor. The most was 112.0 mm (4.4 in) on 25 November 2003.

Record daily precipitation for each month at Deir Zzor
Month	Record daily precipitation (mm)	Date
Jan	13.0 mm (0.5 in)	3 January 1996
Feb	27.9 mm (1.1 in)	26 February 1997
Mar	15.0 mm (0.6 in)	3 March 1997
Apr	16.0 mm (0.6 in)	11 April 1988
May	13.0 mm (0.5 in)	20 May 1996
Jun	4.3 mm (0.17 in)	11 June 2002
Jul	70.1 mm (2.8 in)	13 July 1997
Aug	39.9 mm (1.6 in)	14 August 1990
Sep	2.0 mm (0.08 in)	22 September 1997
Oct	63.0 mm (2.5 in)	19 October 1994
Nov	112.0 mm (4.4 in)	25 November 2003
Dec	38.1 mm (1.5 in)	4 December 1996

Period of Record Coverage

1957 to 2012

49 years of record at Deir Zzor, 1957 to 2012. 47 years have data for under 90 percent of days and are left out of rankings: 1957, 1960, 1961, 1963, 1964, 1965, 1966, 1967 and others.

Days with data per year at Deir Zzor
Year	Days with data	Share of year	Complete
1957	185	51%	No
1958	362	99%	Yes
1960	308	84%	No
1961	255	70%	No
1963	45	12%	No
1964	56	15%	No
1965	58	16%	No
1966	163	45%	No
1967	125	34%	No
1973	235	64%	No
1974	198	54%	No
1975	200	55%	No
1976	181	49%	No
1977	185	51%	No
1978	174	48%	No
1979	134	37%	No
1980	136	37%	No
1981	218	60%	No
1982	194	53%	No
1983	153	42%	No
1984	242	66%	No
1985	240	66%	No
1986	263	72%	No
1987	237	65%	No
1988	164	45%	No
1989	167	46%	No
1990	275	75%	No
1991	285	78%	No
1992	267	73%	No
1993	235	64%	No
1994	291	80%	No
1995	301	82%	No
1996	318	87%	No
1997	320	88%	No
1998	291	80%	No
1999	326	89%	No
2000	333	91%	Yes
2001	312	85%	No
2002	318	87%	No
2003	317	87%	No
2004	291	80%	No
2005	202	55%	No
2006	195	53%	No
2007	184	50%	No
2008	187	51%	No
2009	202	55%	No
2010	280	77%	No
2011	234	64%	No
2012	154	42%	No

Latest Records

Latest records at Deir Zzor
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 July 2012	Deir Zzor, SY	daily high max	45.2 C (113.4 F)	0.4 C (0.7 F)	10 years	9 of 100 (Routine)
17 July 2012	Deir Zzor, SY	daily high min (Tie)	29.0 C (84.2 F)	tie	35 years	3 of 100 (Routine)
17 June 2012	Deir Zzor, SY	daily high max	44.2 C (111.6 F)	0.7 C (1.3 F)	14 years	11 of 100 (Routine)
17 June 2012	Deir Zzor, SY	daily high min	28.4 C (83.1 F)	1.1 C (2.0 F)	9 years	10 of 100 (Routine)
16 June 2012	Deir Zzor, SY	daily high max	45.0 C (113.0 F)	1.4 C (2.5 F)	16 years	13 of 100 (Routine)
15 June 2012	Deir Zzor, SY	daily high max	44.7 C (112.5 F)	1.3 C (2.3 F)	11 years	12 of 100 (Routine)
14 June 2012	Deir Zzor, SY	daily high max	43.3 C (109.9 F)	0.3 C (0.5 F)	11 years	8 of 100 (Routine)
13 May 2012	Deir Zzor, SY	daily high min	21.5 C (70.7 F)	0.4 C (0.7 F)	2 years	6 of 100 (Routine)
1 May 2012	Deir Zzor, SY	daily high max	35.2 C (95.4 F)	1.6 C (2.9 F)	16 years	12 of 100 (Routine)
29 April 2012	Deir Zzor, SY	daily high min	19.2 C (66.6 F)	1.8 C (3.2 F)	13 years	13 of 100 (Routine)
28 April 2012	Deir Zzor, SY	daily high max	34.6 C (94.3 F)	0.6 C (1.1 F)	17 years	11 of 100 (Routine)
10 April 2012	Deir Zzor, SY	daily high min	17.4 C (63.3 F)	1.4 C (2.5 F)	37 years	20 of 100 (Routine)
9 April 2012	Deir Zzor, SY	daily high min	16.8 C (62.2 F)	2.9 C (5.2 F)	54 years	30 of 100 (Routine)
9 April 2012	Deir Zzor, SY	daily high max	33.6 C (92.5 F)	3.4 C (6.1 F)	14 years	16 of 100 (Routine)
8 April 2012	Deir Zzor, SY	daily high max	31.1 C (88.0 F)	1.1 C (2.0 F)	54 years	23 of 100 (Routine)
19 March 2012	Deir Zzor, SY	daily low min	0.0 C (32.0 F)	4.8 C (8.6 F)	19 years	23 of 100 (Routine)
18 March 2012	Deir Zzor, SY	daily low max	14.5 C (58.1 F)	0.6 C (1.1 F)	28 years	14 of 100 (Routine)
18 March 2012	Deir Zzor, SY	daily low min (Tie)	-0.4 C (31.3 F)	tie	22 years	2 of 100 (Routine)
17 March 2012	Deir Zzor, SY	daily low max	10.0 C (50.0 F)	1.0 C (1.8 F)	28 years	15 of 100 (Routine)
5 March 2012	Deir Zzor, SY	daily low max	12.8 C (55.0 F)	0.3 C (0.5 F)	29 years	13 of 100 (Routine)

Extremes by Year

1957 to 2012

Yearly extremes at Deir Zzor: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.8 C (119.8 F)	1998	44.0 C (111.2 F)	49
Coldest night (TNn)	-7.8 C (18.0 F)	1967	-3.5 C (25.6 F)	50
Wettest day (Rx1day)	112.0 mm (4.4 in)	2003	8.4 mm (0.33 in)	32
Wettest five days (Rx5day)	116.0 mm (4.6 in)	1992	8.1 mm (0.32 in)	21
Longest dry spell (CDD)	48 days	1960	6 days	32

Hottest day (TXx)

The hottest day of the year at Deir Zzor, 1957 to 2012. The record is 48.8 C (119.8 F) in 1998, marked on the chart; the median year is 44.0 C (111.2 F).

Hottest day (TXx) at Deir Zzor by year
Year	Hottest day (TXx)
1957	47.8 C (118.0 F)
1958	43.9 C (111.0 F)
1960	43.9 C (111.0 F)
1961	45.0 C (113.0 F)
1962	n/a
1963	43.9 C (111.0 F)
1964	41.1 C (106.0 F)
1965	43.9 C (111.0 F)
1966	43.9 C (111.0 F)
1967	38.9 C (102.0 F)
1973	44.0 C (111.2 F)
1974	44.0 C (111.2 F)
1975	43.0 C (109.4 F)
1976	43.0 C (109.4 F)
1977	44.0 C (111.2 F)
1978	43.0 C (109.4 F)
1979	43.0 C (109.4 F)
1980	42.0 C (107.6 F)
1981	44.0 C (111.2 F)
1982	42.7 C (108.9 F)
1983	44.0 C (111.2 F)
1984	44.2 C (111.6 F)
1985	44.5 C (112.1 F)
1986	43.9 C (111.0 F)
1987	47.0 C (116.6 F)
1988	43.4 C (110.1 F)
1989	44.2 C (111.6 F)
1990	43.5 C (110.3 F)
1991	45.5 C (113.9 F)
1992	42.9 C (109.2 F)
1993	46.0 C (114.8 F)
1994	45.5 C (113.9 F)
1995	43.4 C (110.1 F)
1996	44.4 C (111.9 F)
1997	43.2 C (109.8 F)
1998	48.8 C (119.8 F)
1999	45.4 C (113.7 F)
2000	47.2 C (117.0 F)
2001	45.0 C (113.0 F)
2002	45.2 C (113.4 F)
2003	44.8 C (112.6 F)
2004	44.5 C (112.1 F)
2005	44.8 C (112.6 F)
2006	43.4 C (110.1 F)
2007	45.5 C (113.9 F)
2008	45.0 C (113.0 F)
2009	43.4 C (110.1 F)
2010	45.4 C (113.7 F)
2011	45.0 C (113.0 F)
2012	45.2 C (113.4 F)

Coldest night (TNn)

The coldest night of the year at Deir Zzor, 1957 to 2012. The record is -7.8 C (18.0 F) in 1967, marked on the chart; the median year is -3.5 C (25.6 F).

Coldest night (TNn) at Deir Zzor by year
Year	Coldest night (TNn)
1957	-2.2 C (28.0 F)
1958	-3.9 C (25.0 F)
1960	-2.2 C (28.0 F)
1961	-2.2 C (28.0 F)
1962	3.9 C (39.0 F)
1963	0.0 C (32.0 F)
1964	-5.0 C (23.0 F)
1965	0.0 C (32.0 F)
1966	-2.2 C (28.0 F)
1967	-7.8 C (18.0 F)
1973	-7.0 C (19.4 F)
1974	-5.0 C (23.0 F)
1975	-4.0 C (24.8 F)
1976	-3.0 C (26.6 F)
1977	-3.0 C (26.6 F)
1978	-2.0 C (28.4 F)
1979	0.0 C (32.0 F)
1980	-7.0 C (19.4 F)
1981	0.0 C (32.0 F)
1982	-2.0 C (28.4 F)
1983	-5.2 C (22.6 F)
1984	-1.9 C (28.6 F)
1985	-7.2 C (19.0 F)
1986	-3.6 C (25.5 F)
1987	-1.5 C (29.3 F)
1988	-3.2 C (26.2 F)
1989	-3.5 C (25.7 F)
1990	-7.0 C (19.4 F)
1991	-4.7 C (23.5 F)
1992	-6.0 C (21.2 F)
1993	-3.7 C (25.3 F)
1994	-6.0 C (21.2 F)
1995	-4.5 C (23.9 F)
1996	-0.8 C (30.6 F)
1997	-4.2 C (24.4 F)
1998	-2.1 C (28.2 F)
1999	-2.8 C (27.0 F)
2000	-6.5 C (20.3 F)
2001	-4.0 C (24.8 F)
2002	-3.9 C (25.0 F)
2003	-2.4 C (27.7 F)
2004	-5.5 C (22.1 F)
2005	-1.6 C (29.1 F)
2006	-4.2 C (24.4 F)
2007	-4.6 C (23.7 F)
2008	-7.0 C (19.4 F)
2009	-5.4 C (22.3 F)
2010	-3.2 C (26.2 F)
2011	-3.0 C (26.6 F)
2012	-2.2 C (28.0 F)

Wettest day (Rx1day)

The wettest day of the year at Deir Zzor, 1957 to 2012. The record is 112.0 mm (4.4 in) in 2003, marked on the chart; the median year is 8.4 mm (0.33 in).

Wettest day (Rx1day) at Deir Zzor by year
Year	Wettest day (Rx1day)
1957	n/a
1958	n/a
1960	14.0 mm (0.6 in)
1961	5.1 mm (0.20 in)
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	1.0 mm (0.04 in)
1983	4.1 mm (0.16 in)
1984	7.1 mm (0.28 in)
1985	3.0 mm (0.12 in)
1986	7.9 mm (0.31 in)
1987	36.1 mm (1.4 in)
1988	16.0 mm (0.6 in)
1989	8.9 mm (0.35 in)
1990	39.9 mm (1.6 in)
1991	13.0 mm (0.5 in)
1992	32.0 mm (1.3 in)
1993	27.9 mm (1.1 in)
1994	63.0 mm (2.5 in)
1995	25.9 mm (1.0 in)
1996	38.1 mm (1.5 in)
1997	70.1 mm (2.8 in)
1998	22.1 mm (0.9 in)
1999	0.5 mm (0.02 in)
2000	25.9 mm (1.0 in)
2001	7.9 mm (0.31 in)
2002	4.3 mm (0.17 in)
2003	112.0 mm (4.4 in)
2004	6.1 mm (0.24 in)
2005	5.1 mm (0.20 in)
2006	4.1 mm (0.16 in)
2007	3.0 mm (0.12 in)
2008	1.0 mm (0.04 in)
2009	1.0 mm (0.04 in)
2010	n/a
2011	14.2 mm (0.6 in)
2012	1.0 mm (0.04 in)

Wettest five days (Rx5day)

The wettest five days of the year at Deir Zzor, 1957 to 2012. The record is 116.0 mm (4.6 in) in 1992, marked on the chart; the median year is 8.1 mm (0.32 in).

Wettest five days (Rx5day) at Deir Zzor by year
Year	Wettest five days (Rx5day)
1957	n/a
1958	n/a
1960	14.0 mm (0.6 in)
1961	7.6 mm (0.30 in)
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	0.0 mm (0.00 in)
1983	0.0 mm (0.00 in)
1984	0.0 mm (0.00 in)
1985	n/a
1986	n/a
1987	1.0 mm (0.04 in)
1988	8.1 mm (0.32 in)
1989	n/a
1990	3.0 mm (0.12 in)
1991	13.0 mm (0.5 in)
1992	116.0 mm (4.6 in)
1993	54.8 mm (2.2 in)
1994	64.5 mm (2.5 in)
1995	25.9 mm (1.0 in)
1996	17.0 mm (0.7 in)
1997	70.1 mm (2.8 in)
1998	22.1 mm (0.9 in)
1999	0.5 mm (0.02 in)
2000	n/a
2001	n/a
2002	0.5 mm (0.02 in)
2003	112.0 mm (4.4 in)
2004	6.1 mm (0.24 in)
2005	5.1 mm (0.20 in)
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Deir Zzor, 1957 to 2012. The record is 48 days in 1960, marked on the chart; the median year is 6 days.

Longest dry spell (CDD) at Deir Zzor by year
Year	Longest dry spell (CDD)
1957	n/a
1958	n/a
1960	48 days
1961	39 days
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	9 days
1983	5 days
1984	5 days
1985	3 days
1986	4 days
1987	4 days
1988	2 days
1989	3 days
1990	7 days
1991	6 days
1992	8 days
1993	6 days
1994	12 days
1995	9 days
1996	9 days
1997	16 days
1998	7 days
1999	8 days
2000	3 days
2001	3 days
2002	7 days
2003	11 days
2004	10 days
2005	5 days
2006	2 days
2007	1 day
2008	1 day
2009	2 days
2010	n/a
2011	1 day
2012	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 Deir Zzor standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Deir Zzor 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).