Metztitlan Weather Records (MXN00013077)

Record envelope, standing records and threshold days for Metztitlan (MXN00013077), Mexico, with 58 years of record.

Key Facts for Metztitlan

Metztitlan (MXN00013077) is a weather station in Mexico at 20.58 latitude and -98.75 longitude, 1,374 m (4,507 ft) above sea level.
The station reports from 1952 to 2009, 58 years of record.
1,464 records set at Metztitlan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Metztitlan set a daily record precipitation of 31.8 mm (1.3 in) on 26 September 2009.

About the Station

Location: Mexico, 20.58 latitude, -98.75 longitude.
Elevation: 1,374 m (4,507 ft).
Period of record: 1952 to 2009, 58 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 Metztitlan. 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 Metztitlan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	37.2 C (99.0 F)	-3.9 C (25.0 F)	n/a	n/a
Feb	37.8 C (100.0 F)	-2.2 C (28.0 F)	n/a	n/a
Mar	43.9 C (111.0 F)	-0.6 C (30.9 F)	n/a	n/a
Apr	41.7 C (107.1 F)	1.1 C (34.0 F)	n/a	n/a
May	40.6 C (105.1 F)	6.1 C (43.0 F)	n/a	n/a
Jun	41.7 C (107.1 F)	6.1 C (43.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	6.7 C (44.1 F)	n/a	n/a
Aug	40.0 C (104.0 F)	10.0 C (50.0 F)	n/a	n/a
Sep	38.3 C (100.9 F)	5.0 C (41.0 F)	n/a	n/a
Oct	37.8 C (100.0 F)	3.9 C (39.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	-0.6 C (30.9 F)	n/a	n/a
Dec	39.4 C (102.9 F)	-2.2 C (28.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Metztitlan still stand. 2006 holds the most, with 107.

Standing records at Metztitlan by the year they were set
Year set	Standing records
1952	50
1953	23
1954	19
1955	35
1956	32
1957	27
1958	30
1959	24
1960	24
1961	29
1962	18
1963	14
1964	26
1965	24
1966	14
1967	9
1968	14
1969	19
1970	27
1971	18
1972	25
1973	28
1974	15
1975	22
1976	14
1977	6
1978	62
1979	40
1980	27
1981	91
1983	18
1984	30
1985	31
1986	34
1987	9
1988	31
1989	8
1990	16
1991	21
1992	16
1993	45
1994	1
1995	26
1996	20
1997	40
1998	56
1999	14
2000	10
2001	13
2002	22
2003	12
2004	14
2005	8
2006	107
2007	25
2008	27
2009	4

All-Time Record Progression

4 new records

4 all-time records were set at Metztitlan between 5 January 1985 and 11 June 1998. Each dot is a new record.

When Metztitlan set new all-time records
Date	Kind	Detail
1985-01-05	Record low minimum temperature	Record low minimum temperature -3.9 C (25.0 F)
1990-08-07	Record daily precipitation	Record daily precipitation 103.9 mm (4.1 in)
1998-06-03	Record high minimum temperature	Record high minimum temperature 20.6 C (69.1 F)
1998-06-11	Record high minimum temperature	Record high minimum temperature 21.1 C (70.0 F)

Wettest Day of Each Month

Aug: 103.9 mm (4.1 in)

The wettest day on record for each calendar month at Metztitlan. The most was 103.9 mm (4.1 in) on 7 August 1990.

Record daily precipitation for each month at Metztitlan
Month	Record daily precipitation (mm)	Date
Jan	49.8 mm (2.0 in)	28 January 1952
Feb	17.3 mm (0.7 in)	26 February 2001
Mar	25.9 mm (1.0 in)	25 March 1978
Apr	53.8 mm (2.1 in)	20 April 2003
May	36.3 mm (1.4 in)	20 May 1975
Jun	69.9 mm (2.8 in)	18 June 1981
Jul	72.9 mm (2.9 in)	4 July 1974
Aug	103.9 mm (4.1 in)	7 August 1990
Sep	88.4 mm (3.5 in)	20 September 1974
Oct	66.5 mm (2.6 in)	4 October 1999
Nov	85.6 mm (3.4 in)	5 November 2002
Dec	24.9 mm (1.0 in)	6 December 1989

Period of Record Coverage

1952 to 2009

57 years of record at Metztitlan, 1952 to 2009. 14 years have data for under 90 percent of days and are left out of rankings: 1953, 1956, 1966, 1967, 1983, 1984, 1986, 1987 and others.

Days with data per year at Metztitlan
Year	Days with data	Share of year	Complete
1952	345	94%	Yes
1953	294	81%	No
1954	351	96%	Yes
1955	343	94%	Yes
1956	328	90%	No
1957	359	98%	Yes
1958	354	97%	Yes
1959	359	98%	Yes
1960	361	99%	Yes
1961	353	97%	Yes
1962	360	99%	Yes
1963	360	99%	Yes
1964	357	98%	Yes
1965	360	99%	Yes
1966	240	66%	No
1967	232	64%	No
1968	358	98%	Yes
1969	358	98%	Yes
1970	358	98%	Yes
1971	356	98%	Yes
1972	359	98%	Yes
1973	365	100%	Yes
1974	363	99%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	362	99%	Yes
1980	363	99%	Yes
1981	364	100%	Yes
1983	311	85%	No
1984	326	89%	No
1985	351	96%	Yes
1986	231	63%	No
1987	242	66%	No
1988	306	84%	No
1989	304	83%	No
1990	365	100%	Yes
1991	363	99%	Yes
1992	239	65%	No
1993	361	99%	Yes
1994	211	58%	No
1995	333	91%	Yes
1996	353	96%	Yes
1997	364	100%	Yes
1998	365	100%	Yes
1999	364	100%	Yes
2000	366	100%	Yes
2001	364	100%	Yes
2002	348	95%	Yes
2003	365	100%	Yes
2004	352	96%	Yes
2005	104	28%	No
2006	365	100%	Yes
2007	365	100%	Yes
2008	335	92%	Yes
2009	122	33%	No

Latest Records

Latest records at Metztitlan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 September 2009	Metztitlan, MX	daily rain	31.8 mm (1.3 in)	19.4 mm (0.8 in)	52 years	36 of 100 (Notable)
25 September 2009	Metztitlan, MX	daily rain	25.4 mm (1.0 in)	9.9 mm (0.39 in)	46 years	26 of 100 (Routine)
14 September 2009	Metztitlan, MX	daily rain	47.0 mm (1.9 in)	7.1 mm (0.28 in)	56 years	28 of 100 (Routine)
11 September 2009	Metztitlan, MX	daily rain	37.1 mm (1.5 in)	4.8 mm (0.19 in)	51 years	24 of 100 (Routine)
10 September 2009	Metztitlan, MX	daily rain	29.5 mm (1.2 in)	1.6 mm (0.06 in)	52 years	21 of 100 (Routine)
9 September 2009	Metztitlan, MX	daily high max	32.2 C (90.0 F)	0.5 C (0.9 F)	6 years	7 of 100 (Routine)
21 August 2009	Metztitlan, MX	daily high max (Tie)	32.8 C (91.0 F)	tie	3 years	1 of 100 (Routine)
19 August 2009	Metztitlan, MX	daily high max	33.9 C (93.0 F)	0.6 C (1.1 F)	8 years	9 of 100 (Routine)
21 July 2009	Metztitlan, MX	daily high max	35.0 C (95.0 F)	0.6 C (1.1 F)	8 years	9 of 100 (Routine)
10 July 2009	Metztitlan, MX	daily rain	17.0 mm (0.7 in)	2.0 mm (0.08 in)	56 years	20 of 100 (Routine)
6 July 2009	Metztitlan, MX	daily high max	35.0 C (95.0 F)	1.1 C (2.0 F)	30 years	18 of 100 (Routine)
5 July 2009	Metztitlan, MX	daily high max (Tie)	32.8 C (91.0 F)	tie	30 years	3 of 100 (Routine)
29 November 2008	Metztitlan, MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	4 years	7 of 100 (Routine)
28 November 2008	Metztitlan, MX	daily high max	33.9 C (93.0 F)	1.1 C (2.0 F)	11 years	10 of 100 (Routine)
27 November 2008	Metztitlan, MX	daily high max (Tie)	32.2 C (90.0 F)	tie	5 years	1 of 100 (Routine)
5 November 2008	Metztitlan, MX	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	11 years	10 of 100 (Routine)
31 October 2008	Metztitlan, MX	daily low max (Tie)	20.6 C (69.1 F)	tie	3 years	1 of 100 (Routine)
28 October 2008	Metztitlan, MX	daily low max	15.0 C (59.0 F)	1.7 C (3.1 F)	18 years	14 of 100 (Routine)
27 October 2008	Metztitlan, MX	daily low max	15.6 C (60.1 F)	2.2 C (4.0 F)	51 years	25 of 100 (Routine)
7 October 2008	Metztitlan, MX	daily rain	23.6 mm (0.9 in)	3.8 mm (0.15 in)	32 years	17 of 100 (Routine)

Climate Trend

34 complete years, 1952 to 2007

One stripe for each of 34 complete years at Metztitlan, 1952 to 2007. Blue stripes are years cooler than the station's own mean of 20.6 C (69.1 F); red stripes are warmer. The coolest year was 1954, at 19.3 C (66.8 F), and the warmest was 2006, at 23.3 C (73.9 F). The strongest colour marks a difference of 2.7 C (4.9 F).

Annual mean temperature at Metztitlan as warming stripes, 1952 to 2007
Year	Annual mean temperature	Difference from the station mean
1952	19.6 C	-1.07 C
1954	19.3 C	-1.31 C
1957	19.7 C	-0.97 C
1958	19.8 C	-0.85 C
1959	19.3 C	-1.28 C
1960	19.6 C	-1.05 C
1961	19.6 C	-1.02 C
1962	20.3 C	-0.32 C
1963	20.3 C	-0.31 C
1964	20.7 C	+0.09 C
1965	20.4 C	-0.26 C
1968	20.1 C	-0.54 C
1969	20.4 C	-0.21 C
1970	20.0 C	-0.58 C
1971	20.6 C	-0.01 C
1972	21.0 C	+0.42 C
1973	20.5 C	-0.11 C
1974	20.1 C	-0.55 C
1975	20.1 C	-0.56 C
1976	20.1 C	-0.56 C
1977	20.4 C	-0.20 C
1980	20.3 C	-0.31 C
1981	22.2 C	+1.59 C
1990	20.0 C	-0.59 C
1991	20.6 C	+0.02 C
1997	21.6 C	+0.99 C
1998	22.6 C	+2.01 C
1999	21.3 C	+0.72 C
2000	21.6 C	+1.01 C
2001	21.3 C	+0.71 C
2003	21.1 C	+0.51 C
2004	20.8 C	+0.20 C
2006	23.3 C	+2.65 C
2007	22.5 C	+1.86 C

The annual mean temperature here has risen by 0.5 C (0.3 to 0.6) per decade over 1952 to 2007. In Fahrenheit: 0.8 F (0.6 to 1.0) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Metztitlan
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.5 C (0.3 to 0.6) per decade	0.8 F (0.6 to 1.0) per decade	1952 to 2007	34	Rise
Mean daily maximum	0.5 C (0.4 to 0.7) per decade	1.0 F (0.6 to 1.3) per decade	1952 to 2007	34	Rise
Mean daily minimum	0.4 C (0.3 to 0.5) per decade	0.7 F (0.5 to 0.9) per decade	1952 to 2007	34	Rise

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

1952 to 2009

Yearly extremes at Metztitlan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1981	37.8 C (100.0 F)	57
Coldest night (TNn)	-3.9 C (25.0 F)	1985	0.6 C (33.1 F)	57
Wettest day (Rx1day)	103.9 mm (4.1 in)	1990	39.9 mm (1.6 in)	57
Wettest five days (Rx5day)	194.5 mm (7.7 in)	1990	66.9 mm (2.6 in)	57
Longest dry spell (CDD)	365 days	1994	62 days	57

Hottest day (TXx)

The hottest day of the year at Metztitlan, 1952 to 2009. The record is 43.9 C (111.0 F) in 1981, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Metztitlan by year
Year	Hottest day (TXx)
1952	38.9 C (102.0 F)
1953	37.8 C (100.0 F)
1954	37.2 C (99.0 F)
1955	37.2 C (99.0 F)
1956	35.6 C (96.1 F)
1957	36.1 C (97.0 F)
1958	35.6 C (96.1 F)
1959	35.0 C (95.0 F)
1960	36.7 C (98.1 F)
1961	37.2 C (99.0 F)
1962	37.8 C (100.0 F)
1963	36.7 C (98.1 F)
1964	40.6 C (105.1 F)
1965	37.2 C (99.0 F)
1966	35.6 C (96.1 F)
1967	33.9 C (93.0 F)
1968	36.7 C (98.1 F)
1969	38.9 C (102.0 F)
1970	40.0 C (104.0 F)
1971	40.0 C (104.0 F)
1972	38.9 C (102.0 F)
1973	40.0 C (104.0 F)
1974	37.8 C (100.0 F)
1975	37.8 C (100.0 F)
1976	36.7 C (98.1 F)
1977	37.8 C (100.0 F)
1978	37.8 C (100.0 F)
1979	37.8 C (100.0 F)
1980	38.9 C (102.0 F)
1981	43.9 C (111.0 F)
1983	40.0 C (104.0 F)
1984	38.3 C (100.9 F)
1985	36.1 C (97.0 F)
1986	37.2 C (99.0 F)
1987	36.1 C (97.0 F)
1988	36.7 C (98.1 F)
1989	37.8 C (100.0 F)
1990	37.8 C (100.0 F)
1991	37.8 C (100.0 F)
1992	35.0 C (95.0 F)
1993	37.8 C (100.0 F)
1994	33.9 C (93.0 F)
1995	35.6 C (96.1 F)
1996	38.9 C (102.0 F)
1997	37.8 C (100.0 F)
1998	40.6 C (105.1 F)
1999	39.4 C (102.9 F)
2000	36.7 C (98.1 F)
2001	38.9 C (102.0 F)
2002	40.0 C (104.0 F)
2003	40.0 C (104.0 F)
2004	37.8 C (100.0 F)
2005	38.9 C (102.0 F)
2006	41.7 C (107.1 F)
2007	40.0 C (104.0 F)
2008	40.0 C (104.0 F)
2009	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Metztitlan, 1952 to 2009. The record is -3.9 C (25.0 F) in 1985, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Metztitlan by year
Year	Coldest night (TNn)
1952	-0.6 C (30.9 F)
1953	-0.6 C (30.9 F)
1954	0.0 C (32.0 F)
1955	2.2 C (36.0 F)
1956	0.0 C (32.0 F)
1957	-1.7 C (28.9 F)
1958	-1.7 C (28.9 F)
1959	1.1 C (34.0 F)
1960	-2.2 C (28.0 F)
1961	0.0 C (32.0 F)
1962	-2.2 C (28.0 F)
1963	0.0 C (32.0 F)
1964	-1.1 C (30.0 F)
1965	-1.1 C (30.0 F)
1966	0.6 C (33.1 F)
1967	-1.1 C (30.0 F)
1968	0.6 C (33.1 F)
1969	3.3 C (37.9 F)
1970	0.0 C (32.0 F)
1971	1.7 C (35.1 F)
1972	2.8 C (37.0 F)
1973	-1.1 C (30.0 F)
1974	1.7 C (35.1 F)
1975	0.0 C (32.0 F)
1976	-1.1 C (30.0 F)
1977	0.0 C (32.0 F)
1978	3.9 C (39.0 F)
1979	1.7 C (35.1 F)
1980	3.9 C (39.0 F)
1981	0.0 C (32.0 F)
1983	1.1 C (34.0 F)
1984	1.1 C (34.0 F)
1985	-3.9 C (25.0 F)
1986	-2.8 C (27.0 F)
1987	0.6 C (33.1 F)
1988	-2.2 C (28.0 F)
1989	-1.1 C (30.0 F)
1990	1.7 C (35.1 F)
1991	3.9 C (39.0 F)
1992	3.9 C (39.0 F)
1993	1.7 C (35.1 F)
1994	3.9 C (39.0 F)
1995	5.0 C (41.0 F)
1996	1.7 C (35.1 F)
1997	-2.2 C (28.0 F)
1998	5.0 C (41.0 F)
1999	2.8 C (37.0 F)
2000	2.2 C (36.0 F)
2001	3.9 C (39.0 F)
2002	1.7 C (35.1 F)
2003	-0.6 C (30.9 F)
2004	0.6 C (33.1 F)
2005	5.0 C (41.0 F)
2006	3.9 C (39.0 F)
2007	5.6 C (42.1 F)
2008	5.0 C (41.0 F)
2009	12.2 C (54.0 F)

Wettest day (Rx1day)

The wettest day of the year at Metztitlan, 1952 to 2009. The record is 103.9 mm (4.1 in) in 1990, marked on the chart; the median year is 39.9 mm (1.6 in).

Wettest day (Rx1day) at Metztitlan by year
Year	Wettest day (Rx1day)
1952	49.8 mm (2.0 in)
1953	47.0 mm (1.9 in)
1954	54.4 mm (2.1 in)
1955	56.9 mm (2.2 in)
1956	47.0 mm (1.9 in)
1957	15.0 mm (0.6 in)
1958	50.8 mm (2.0 in)
1959	58.4 mm (2.3 in)
1960	36.3 mm (1.4 in)
1961	32.3 mm (1.3 in)
1962	49.3 mm (1.9 in)
1963	31.8 mm (1.3 in)
1964	25.9 mm (1.0 in)
1965	26.4 mm (1.0 in)
1966	31.0 mm (1.2 in)
1967	31.5 mm (1.2 in)
1968	37.8 mm (1.5 in)
1969	20.8 mm (0.8 in)
1970	43.4 mm (1.7 in)
1971	39.9 mm (1.6 in)
1972	31.8 mm (1.3 in)
1973	37.8 mm (1.5 in)
1974	88.4 mm (3.5 in)
1975	45.5 mm (1.8 in)
1976	29.5 mm (1.2 in)
1977	53.8 mm (2.1 in)
1978	35.8 mm (1.4 in)
1979	47.0 mm (1.9 in)
1980	35.8 mm (1.4 in)
1981	69.9 mm (2.8 in)
1983	52.8 mm (2.1 in)
1984	64.8 mm (2.6 in)
1985	34.3 mm (1.4 in)
1986	12.4 mm (0.5 in)
1987	20.6 mm (0.8 in)
1988	84.8 mm (3.3 in)
1989	36.8 mm (1.4 in)
1990	103.9 mm (4.1 in)
1991	54.9 mm (2.2 in)
1992	31.0 mm (1.2 in)
1993	23.9 mm (0.9 in)
1994	0.0 mm (0.00 in)
1995	36.8 mm (1.4 in)
1996	50.3 mm (2.0 in)
1997	47.0 mm (1.9 in)
1998	54.6 mm (2.1 in)
1999	66.5 mm (2.6 in)
2000	20.6 mm (0.8 in)
2001	35.6 mm (1.4 in)
2002	85.6 mm (3.4 in)
2003	79.8 mm (3.1 in)
2004	30.7 mm (1.2 in)
2005	36.6 mm (1.4 in)
2006	65.5 mm (2.6 in)
2007	89.7 mm (3.5 in)
2008	39.9 mm (1.6 in)
2009	47.0 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Metztitlan, 1952 to 2009. The record is 194.5 mm (7.7 in) in 1990, marked on the chart; the median year is 66.9 mm (2.6 in).

Wettest five days (Rx5day) at Metztitlan by year
Year	Wettest five days (Rx5day)
1952	113.1 mm (4.5 in)
1953	89.5 mm (3.5 in)
1954	121.5 mm (4.8 in)
1955	124.0 mm (4.9 in)
1956	136.2 mm (5.4 in)
1957	33.4 mm (1.3 in)
1958	83.8 mm (3.3 in)
1959	101.9 mm (4.0 in)
1960	65.8 mm (2.6 in)
1961	124.1 mm (4.9 in)
1962	72.5 mm (2.9 in)
1963	43.4 mm (1.7 in)
1964	49.5 mm (1.9 in)
1965	48.5 mm (1.9 in)
1966	67.4 mm (2.7 in)
1967	65.8 mm (2.6 in)
1968	55.9 mm (2.2 in)
1969	52.0 mm (2.0 in)
1970	61.2 mm (2.4 in)
1971	61.5 mm (2.4 in)
1972	55.9 mm (2.2 in)
1973	100.1 mm (3.9 in)
1974	171.9 mm (6.8 in)
1975	98.6 mm (3.9 in)
1976	49.8 mm (2.0 in)
1977	53.8 mm (2.1 in)
1978	38.1 mm (1.5 in)
1979	62.7 mm (2.5 in)
1980	42.9 mm (1.7 in)
1981	161.4 mm (6.4 in)
1983	52.8 mm (2.1 in)
1984	153.0 mm (6.0 in)
1985	59.5 mm (2.3 in)
1986	16.5 mm (0.6 in)
1987	20.6 mm (0.8 in)
1988	147.1 mm (5.8 in)
1989	66.9 mm (2.6 in)
1990	194.5 mm (7.7 in)
1991	97.1 mm (3.8 in)
1992	47.5 mm (1.9 in)
1993	53.3 mm (2.1 in)
1994	0.0 mm (0.00 in)
1995	63.4 mm (2.5 in)
1996	61.8 mm (2.4 in)
1997	53.1 mm (2.1 in)
1998	89.7 mm (3.5 in)
1999	170.9 mm (6.7 in)
2000	34.8 mm (1.4 in)
2001	77.7 mm (3.1 in)
2002	112.8 mm (4.4 in)
2003	96.4 mm (3.8 in)
2004	56.4 mm (2.2 in)
2005	100.9 mm (4.0 in)
2006	103.9 mm (4.1 in)
2007	100.4 mm (4.0 in)
2008	74.2 mm (2.9 in)
2009	119.4 mm (4.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Metztitlan, 1952 to 2009. The record is 365 days in 1994, marked on the chart; the median year is 62 days.

Longest dry spell (CDD) at Metztitlan by year
Year	Longest dry spell (CDD)
1952	50 days
1953	51 days
1954	51 days
1955	84 days
1956	73 days
1957	59 days
1958	91 days
1959	44 days
1960	86 days
1961	56 days
1962	91 days
1963	62 days
1964	63 days
1965	42 days
1966	34 days
1967	49 days
1968	39 days
1969	43 days
1970	133 days
1971	72 days
1972	97 days
1973	47 days
1974	58 days
1975	102 days
1976	44 days
1977	78 days
1978	73 days
1979	73 days
1980	75 days
1981	62 days
1983	72 days
1984	57 days
1985	55 days
1986	102 days
1987	62 days
1988	78 days
1989	80 days
1990	44 days
1991	67 days
1992	54 days
1993	44 days
1994	365 days
1995	217 days
1996	59 days
1997	76 days
1998	154 days
1999	51 days
2000	84 days
2001	53 days
2002	140 days
2003	59 days
2004	61 days
2005	38 days
2006	61 days
2007	33 days
2008	82 days
2009	30 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

47 years, 1952 to 2008

A day with at least 44.3 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 109.8 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Metztitlan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.3 mm (1.7 in)
5 years	64.4 mm (2.5 in)
10 years	76.6 mm (3.0 in)
25 years	90.8 mm (3.6 in)
50 years	100.6 mm (4.0 in)	Longer than the 47 years of record
100 years	109.8 mm (4.3 in)	Longer than the 47 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, 47 years of values from 1952 to 2008.

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: 103.9 mm (4.1 in) in 1990; 89.7 mm (3.5 in) in 2007; 88.4 mm (3.5 in) in 1974.

Download the Data

Data for Metztitlan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Metztitlan 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).