Ciudad Guzman (Obs) Weather Records (MXN00014030)

Record envelope, standing records and threshold days for Ciudad Guzman (Obs) (MXN00014030), Mexico, with 80 years of record.

Key Facts for Ciudad Guzman (Obs)

Ciudad Guzman (Obs) (MXN00014030) is a weather station in Mexico at 19.72 latitude and -103.45 longitude, 1,515 m (4,970 ft) above sea level.
The station reports from 1926 to 2005, 80 years of record.
1,464 records set at Ciudad Guzman (Obs) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ciudad Guzman (Obs) set a daily record low minimum temperature of 7.8 C (46.0 F) on 3 November 2005.

About the Station

Location: Mexico, 19.72 latitude, -103.45 longitude.
Elevation: 1,515 m (4,970 ft).
Period of record: 1926 to 2005, 80 years.
Eligible elements: tmax, tmin, 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 Ciudad Guzman (Obs). 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 Ciudad Guzman (Obs), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.3 C (100.9 F)	-3.9 C (25.0 F)	n/a	n/a
Feb	36.7 C (98.1 F)	-1.1 C (30.0 F)	n/a	n/a
Mar	38.3 C (100.9 F)	0.0 C (32.0 F)	n/a	n/a
Apr	37.8 C (100.0 F)	2.2 C (36.0 F)	n/a	n/a
May	45.0 C (113.0 F)	5.0 C (41.0 F)	n/a	n/a
Jun	42.8 C (109.0 F)	8.9 C (48.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	10.0 C (50.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	8.9 C (48.0 F)	n/a	n/a
Sep	35.0 C (95.0 F)	7.8 C (46.0 F)	n/a	n/a
Oct	38.3 C (100.9 F)	3.3 C (37.9 F)	n/a	n/a
Nov	38.9 C (102.0 F)	0.6 C (33.1 F)	n/a	n/a
Dec	38.9 C (102.0 F)	0.0 C (32.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ciudad Guzman (Obs) still stand. 1927 holds the most, with 221.

Standing records at Ciudad Guzman (Obs) by the year they were set
Year set	Standing records
1926	81
1927	221
1928	100
1929	94
1930	43
1933	68
1934	19
1935	33
1936	72
1937	4
1938	50
1939	21
1940	27
1941	4
1942	27
1943	32
1944	21
1945	156
1946	79
1947	14
1948	20
1989	8
1990	13
1991	11
1992	31
1993	38
1994	5
1995	12
1996	20
1997	19
1998	23
1999	21
2000	12
2001	13
2002	27
2003	13
2004	2
2005	10

Wettest Day of Each Month

Jan: 111.0 mm (4.4 in)

The wettest day on record for each calendar month at Ciudad Guzman (Obs). The most was 111.0 mm (4.4 in) on 16 January 1992.

Record daily precipitation for each month at Ciudad Guzman (Obs)
Month	Record daily precipitation (mm)	Date
Jan	111.0 mm (4.4 in)	16 January 1992
Feb	21.8 mm (0.9 in)	4 February 1935
Mar	17.3 mm (0.7 in)	6 March 1997
Apr	21.8 mm (0.9 in)	11 April 1935
May	46.0 mm (1.8 in)	24 May 2003
Jun	94.7 mm (3.7 in)	21 June 1999
Jul	90.7 mm (3.6 in)	10 July 1999
Aug	79.8 mm (3.1 in)	22 August 1945
Sep	69.9 mm (2.8 in)	17 September 1943
Oct	105.4 mm (4.1 in)	9 October 1992
Nov	41.1 mm (1.6 in)	3 November 2002
Dec	24.9 mm (1.0 in)	7 December 1941

Period of Record Coverage

1926 to 2005

38 years of record at Ciudad Guzman (Obs), 1926 to 2005. 12 years have data for under 90 percent of days and are left out of rankings: 1926, 1930, 1933, 1943, 1944, 1947, 1948, 1989 and others.

Days with data per year at Ciudad Guzman (Obs)
Year	Days with data	Share of year	Complete
1926	166	45%	No
1927	362	99%	Yes
1928	364	99%	Yes
1929	348	95%	Yes
1930	319	87%	No
1933	300	82%	No
1934	359	98%	Yes
1935	357	98%	Yes
1936	364	99%	Yes
1937	364	100%	Yes
1938	347	95%	Yes
1939	361	99%	Yes
1940	346	95%	Yes
1941	346	95%	Yes
1942	350	96%	Yes
1943	296	81%	No
1944	241	66%	No
1945	349	96%	Yes
1946	347	95%	Yes
1947	285	78%	No
1948	239	65%	No
1989	319	87%	No
1990	187	51%	No
1991	364	100%	Yes
1992	366	100%	Yes
1993	361	99%	Yes
1994	357	98%	Yes
1995	356	98%	Yes
1996	359	98%	Yes
1997	357	98%	Yes
1998	362	99%	Yes
1999	357	98%	Yes
2000	366	100%	Yes
2001	363	99%	Yes
2002	358	98%	Yes
2003	303	83%	No
2004	30	8%	No
2005	272	75%	No

Latest Records

Latest records at Ciudad Guzman (Obs)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 November 2005	Ciudad Guzman (Obs), MX	daily low min	7.8 C (46.0 F)	0.5 C (0.9 F)	4 years	10 of 100 (Routine)
14 September 2005	Ciudad Guzman (Obs), MX	daily rain	33.8 mm (1.3 in)	4.6 mm (0.18 in)	2 years	12 of 100 (Routine)
11 September 2005	Ciudad Guzman (Obs), MX	daily rain	52.6 mm (2.1 in)	14.8 mm (0.6 in)	70 years	42 of 100 (Notable)
10 July 2005	Ciudad Guzman (Obs), MX	daily high min	18.3 C (64.9 F)	1.6 C (2.9 F)	78 years	40 of 100 (Notable)
15 June 2005	Ciudad Guzman (Obs), MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	59 years	26 of 100 (Routine)
6 June 2005	Ciudad Guzman (Obs), MX	daily high max (Tie)	36.7 C (98.1 F)	tie	78 years	7 of 100 (Routine)
5 June 2005	Ciudad Guzman (Obs), MX	daily high max (Tie)	37.8 C (100.0 F)	tie	68 years	7 of 100 (Routine)
8 May 2005	Ciudad Guzman (Obs), MX	daily low min	7.2 C (45.0 F)	1.1 C (2.0 F)	63 years	30 of 100 (Routine)
6 May 2005	Ciudad Guzman (Obs), MX	daily low min	7.2 C (45.0 F)	0.6 C (1.1 F)	63 years	28 of 100 (Routine)
5 May 2005	Ciudad Guzman (Obs), MX	daily low min	5.6 C (42.1 F)	1.1 C (2.0 F)	63 years	30 of 100 (Routine)
29 April 2005	Ciudad Guzman (Obs), MX	daily high max	37.2 C (99.0 F)	0.5 C (0.9 F)	78 years	32 of 100 (Routine)
22 April 2005	Ciudad Guzman (Obs), MX	daily high max (Tie)	35.0 C (95.0 F)	tie	14 years	3 of 100 (Routine)
14 April 2005	Ciudad Guzman (Obs), MX	daily high max (Tie)	33.9 C (93.0 F)	tie	59 years	6 of 100 (Routine)
28 February 2005	Ciudad Guzman (Obs), MX	daily low min	1.7 C (35.1 F)	1.6 C (2.9 F)	13 years	16 of 100 (Routine)
26 February 2005	Ciudad Guzman (Obs), MX	daily rain	2.5 mm (0.10 in)	2.5 mm (0.10 in)	78 years	20 of 100 (Routine)
26 February 2005	Ciudad Guzman (Obs), MX	daily low max	18.3 C (64.9 F)	1.7 C (3.1 F)	13 years	15 of 100 (Routine)
25 February 2005	Ciudad Guzman (Obs), MX	daily low max (Tie)	23.9 C (75.0 F)	tie	75 years	7 of 100 (Routine)
24 February 2005	Ciudad Guzman (Obs), MX	daily rain	2.8 mm (0.11 in)	2.8 mm (0.11 in)	78 years	20 of 100 (Routine)
4 February 2005	Ciudad Guzman (Obs), MX	daily low max	16.1 C (61.0 F)	1.7 C (3.1 F)	76 years	34 of 100 (Routine)
21 November 2004	Ciudad Guzman (Obs), MX	daily low min (Tie)	5.0 C (41.0 F)	tie	62 years	6 of 100 (Routine)

Climate Trend

26 complete years, 1927 to 2002

One stripe for each of 26 complete years at Ciudad Guzman (Obs), 1927 to 2002. Blue stripes are years cooler than the station's own mean of 19.9 C (67.8 F); red stripes are warmer. The coolest year was 1992, at 18.9 C (66.1 F), and the warmest was 1927, at 23.6 C (74.4 F). The strongest colour marks a difference of 3.8 C (6.8 F).

Annual mean temperature at Ciudad Guzman (Obs) as warming stripes, 1927 to 2002
Year	Annual mean temperature	Difference from the station mean
1927	23.6 C	+3.71 C
1928	20.7 C	+0.84 C
1929	19.2 C	-0.67 C
1934	19.9 C	-0.01 C
1935	20.4 C	+0.50 C
1936	20.4 C	+0.48 C
1937	19.6 C	-0.23 C
1938	19.1 C	-0.82 C
1939	19.4 C	-0.49 C
1940	19.8 C	-0.05 C
1941	20.0 C	+0.10 C
1942	19.4 C	-0.50 C
1945	21.6 C	+1.68 C
1946	19.5 C	-0.34 C
1991	19.5 C	-0.37 C
1992	18.9 C	-0.93 C
1993	19.2 C	-0.64 C
1994	19.9 C	-0.01 C
1995	20.1 C	+0.18 C
1996	19.3 C	-0.53 C
1997	19.3 C	-0.55 C
1998	19.9 C	-0.02 C
1999	19.4 C	-0.50 C
2000	19.5 C	-0.34 C
2001	19.4 C	-0.44 C
2002	19.7 C	-0.14 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1926 to 2005

Yearly extremes at Ciudad Guzman (Obs): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1929	36.1 C (97.0 F)	38
Coldest night (TNn)	-3.9 C (25.0 F)	1997	1.7 C (35.1 F)	38
Wettest day (Rx1day)	111.0 mm (4.4 in)	1992	43.1 mm (1.7 in)	40
Wettest five days (Rx5day)	191.8 mm (7.6 in)	1992	82.3 mm (3.2 in)	40
Longest dry spell (CDD)	161 days	1936	93 days	40

Hottest day (TXx)

The hottest day of the year at Ciudad Guzman (Obs), 1926 to 2005. The record is 45.0 C (113.0 F) in 1929, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Ciudad Guzman (Obs) by year
Year	Hottest day (TXx)
1926	38.9 C (102.0 F)
1927	38.9 C (102.0 F)
1928	35.6 C (96.1 F)
1929	45.0 C (113.0 F)
1930	45.0 C (113.0 F)
1931	n/a
1932	n/a
1933	30.6 C (87.1 F)
1934	37.8 C (100.0 F)
1935	37.2 C (99.0 F)
1936	37.8 C (100.0 F)
1937	35.6 C (96.1 F)
1938	36.1 C (97.0 F)
1939	38.3 C (100.9 F)
1940	38.3 C (100.9 F)
1941	35.0 C (95.0 F)
1942	33.9 C (93.0 F)
1943	35.0 C (95.0 F)
1944	36.7 C (98.1 F)
1945	37.8 C (100.0 F)
1946	36.1 C (97.0 F)
1947	32.8 C (91.0 F)
1948	34.4 C (93.9 F)
1989	34.4 C (93.9 F)
1990	32.2 C (90.0 F)
1991	36.7 C (98.1 F)
1992	35.0 C (95.0 F)
1993	35.6 C (96.1 F)
1994	35.6 C (96.1 F)
1995	36.1 C (97.0 F)
1996	37.2 C (99.0 F)
1997	36.1 C (97.0 F)
1998	38.9 C (102.0 F)
1999	35.6 C (96.1 F)
2000	35.6 C (96.1 F)
2001	36.1 C (97.0 F)
2002	36.1 C (97.0 F)
2003	37.2 C (99.0 F)
2004	30.0 C (86.0 F)
2005	38.3 C (100.9 F)

Coldest night (TNn)

The coldest night of the year at Ciudad Guzman (Obs), 1926 to 2005. The record is -3.9 C (25.0 F) in 1997, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at Ciudad Guzman (Obs) by year
Year	Coldest night (TNn)
1926	7.8 C (46.0 F)
1927	5.6 C (42.1 F)
1928	5.6 C (42.1 F)
1929	1.7 C (35.1 F)
1930	5.0 C (41.0 F)
1931	n/a
1932	n/a
1933	4.4 C (39.9 F)
1934	5.0 C (41.0 F)
1935	1.1 C (34.0 F)
1936	5.0 C (41.0 F)
1937	5.6 C (42.1 F)
1938	1.7 C (35.1 F)
1939	0.6 C (33.1 F)
1940	1.7 C (35.1 F)
1941	1.7 C (35.1 F)
1942	1.1 C (34.0 F)
1943	2.8 C (37.0 F)
1944	1.7 C (35.1 F)
1945	1.7 C (35.1 F)
1946	2.8 C (37.0 F)
1947	3.3 C (37.9 F)
1948	3.9 C (39.0 F)
1989	2.8 C (37.0 F)
1990	5.0 C (41.0 F)
1991	0.0 C (32.0 F)
1992	0.0 C (32.0 F)
1993	0.0 C (32.0 F)
1994	1.1 C (34.0 F)
1995	2.2 C (36.0 F)
1996	0.0 C (32.0 F)
1997	-3.9 C (25.0 F)
1998	-1.1 C (30.0 F)
1999	0.0 C (32.0 F)
2000	1.7 C (35.1 F)
2001	0.0 C (32.0 F)
2002	0.6 C (33.1 F)
2003	2.2 C (36.0 F)
2004	2.8 C (37.0 F)
2005	1.7 C (35.1 F)

Wettest day (Rx1day)

The wettest day of the year at Ciudad Guzman (Obs), 1926 to 2005. The record is 111.0 mm (4.4 in) in 1992, marked on the chart; the median year is 43.1 mm (1.7 in).

Wettest day (Rx1day) at Ciudad Guzman (Obs) by year
Year	Wettest day (Rx1day)
1926	32.8 mm (1.3 in)
1927	23.9 mm (0.9 in)
1928	31.5 mm (1.2 in)
1929	35.3 mm (1.4 in)
1930	18.8 mm (0.7 in)
1931	19.8 mm (0.8 in)
1932	11.2 mm (0.4 in)
1933	48.8 mm (1.9 in)
1934	39.9 mm (1.6 in)
1935	45.0 mm (1.8 in)
1936	45.0 mm (1.8 in)
1937	72.9 mm (2.9 in)
1938	59.9 mm (2.4 in)
1939	46.0 mm (1.8 in)
1940	39.9 mm (1.6 in)
1941	38.9 mm (1.5 in)
1942	39.9 mm (1.6 in)
1943	69.9 mm (2.8 in)
1944	71.9 mm (2.8 in)
1945	79.8 mm (3.1 in)
1946	24.9 mm (1.0 in)
1947	29.0 mm (1.1 in)
1948	25.9 mm (1.0 in)
1989	46.5 mm (1.8 in)
1990	36.8 mm (1.4 in)
1991	56.4 mm (2.2 in)
1992	111.0 mm (4.4 in)
1993	75.7 mm (3.0 in)
1994	35.8 mm (1.4 in)
1995	32.3 mm (1.3 in)
1996	73.2 mm (2.9 in)
1997	66.3 mm (2.6 in)
1998	40.1 mm (1.6 in)
1999	94.7 mm (3.7 in)
2000	48.3 mm (1.9 in)
2001	74.2 mm (2.9 in)
2002	41.1 mm (1.6 in)
2003	64.5 mm (2.5 in)
2004	3.8 mm (0.15 in)
2005	52.6 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ciudad Guzman (Obs), 1926 to 2005. The record is 191.8 mm (7.6 in) in 1992, marked on the chart; the median year is 82.3 mm (3.2 in).

Wettest five days (Rx5day) at Ciudad Guzman (Obs) by year
Year	Wettest five days (Rx5day)
1926	55.7 mm (2.2 in)
1927	92.2 mm (3.6 in)
1928	65.1 mm (2.6 in)
1929	79.0 mm (3.1 in)
1930	62.5 mm (2.5 in)
1931	65.7 mm (2.6 in)
1932	23.8 mm (0.9 in)
1933	75.8 mm (3.0 in)
1934	81.3 mm (3.2 in)
1935	96.8 mm (3.8 in)
1936	116.1 mm (4.6 in)
1937	136.7 mm (5.4 in)
1938	78.8 mm (3.1 in)
1939	100.9 mm (4.0 in)
1940	66.8 mm (2.6 in)
1941	68.4 mm (2.7 in)
1942	109.0 mm (4.3 in)
1943	108.6 mm (4.3 in)
1944	73.9 mm (2.9 in)
1945	185.9 mm (7.3 in)
1946	57.7 mm (2.3 in)
1947	56.7 mm (2.2 in)
1948	69.6 mm (2.7 in)
1989	83.7 mm (3.3 in)
1990	63.7 mm (2.5 in)
1991	83.3 mm (3.3 in)
1992	191.8 mm (7.6 in)
1993	103.9 mm (4.1 in)
1994	49.8 mm (2.0 in)
1995	98.9 mm (3.9 in)
1996	133.6 mm (5.3 in)
1997	110.3 mm (4.3 in)
1998	85.4 mm (3.4 in)
1999	130.9 mm (5.2 in)
2000	48.3 mm (1.9 in)
2001	100.1 mm (3.9 in)
2002	75.7 mm (3.0 in)
2003	111.8 mm (4.4 in)
2004	3.8 mm (0.15 in)
2005	90.3 mm (3.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ciudad Guzman (Obs), 1926 to 2005. The record is 161 days in 1936, marked on the chart; the median year is 93 days.

Longest dry spell (CDD) at Ciudad Guzman (Obs) by year
Year	Longest dry spell (CDD)
1926	57 days
1927	153 days
1928	120 days
1929	122 days
1930	97 days
1931	115 days
1932	121 days
1933	69 days
1934	113 days
1935	72 days
1936	161 days
1937	72 days
1938	150 days
1939	121 days
1940	75 days
1941	80 days
1942	139 days
1943	53 days
1944	65 days
1945	91 days
1946	135 days
1947	138 days
1948	126 days
1989	79 days
1990	19 days
1991	123 days
1992	65 days
1993	133 days
1994	94 days
1995	100 days
1996	74 days
1997	45 days
1998	140 days
1999	55 days
2000	127 days
2001	77 days
2002	91 days
2003	76 days
2004	29 days
2005	81 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.

Rainfall Return Levels

31 years, 1927 to 2002

A day with at least 45.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 123.6 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Ciudad Guzman (Obs): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	45.0 mm (1.8 in)
5 years	65.8 mm (2.6 in)
10 years	79.7 mm (3.1 in)
25 years	97.3 mm (3.8 in)
50 years	110.5 mm (4.4 in)	Longer than the 31 years of record
100 years	123.6 mm (4.9 in)	Longer than the 31 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, 31 years of values from 1927 to 2002.

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: 111.0 mm (4.4 in) in 1992; 94.7 mm (3.7 in) in 1999; 79.8 mm (3.1 in) in 1945.

Download the Data

Data for Ciudad Guzman (Obs) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ciudad Guzman (Obs) 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 2026-10-16 (16 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).