Dos Arroyos Weather Records (MXN00011085)

Record envelope, standing records and threshold days for Dos Arroyos (MXN00011085), Mexico, with 42 years of record.

Key Facts for Dos Arroyos

Dos Arroyos (MXN00011085) is a weather station in Mexico at 20.83 latitude and -101.05 longitude, 2,241 m (7,352 ft) above sea level.
The station reports from 1972 to 2013, 42 years of record.
1,464 records set at Dos Arroyos still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Dos Arroyos set a daily record low minimum temperature of 1.7 C (35.1 F) on 31 March 2013.

About the Station

Location: Mexico, 20.83 latitude, -101.05 longitude.
Elevation: 2,241 m (7,352 ft).
Period of record: 1972 to 2013, 42 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 Dos Arroyos. 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 Dos Arroyos, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-5.6 C (21.9 F)	n/a	n/a
Feb	30.0 C (86.0 F)	-6.1 C (21.0 F)	n/a	n/a
Mar	33.9 C (93.0 F)	-4.4 C (24.1 F)	n/a	n/a
Apr	37.2 C (99.0 F)	0.0 C (32.0 F)	n/a	n/a
May	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Jun	37.8 C (100.0 F)	5.0 C (41.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	36.7 C (98.1 F)	5.6 C (42.1 F)	n/a	n/a
Sep	38.3 C (100.9 F)	1.1 C (34.0 F)	n/a	n/a
Oct	38.3 C (100.9 F)	0.0 C (32.0 F)	n/a	n/a
Nov	37.8 C (100.0 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-4.4 C (24.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Dos Arroyos still stand. 1995 holds the most, with 192.

Standing records at Dos Arroyos by the year they were set
Year set	Standing records
1972	15
1973	43
1974	37
1975	36
1976	61
1977	68
1978	75
1979	82
1980	65
1981	25
1982	15
1983	42
1984	19
1985	30
1986	21
1987	20
1988	15
1989	13
1990	11
1991	10
1992	38
1993	35
1994	38
1995	192
1996	162
1997	19
1998	41
1999	24
2000	11
2001	14
2002	11
2003	13
2004	5
2005	2
2006	8
2007	22
2008	14
2009	11
2010	15
2011	28
2012	31
2013	27

All-Time Record Progression

2 new records

2 all-time records were set at Dos Arroyos between 1 March 2013 and 2 March 2013. Each dot is a new record.

When Dos Arroyos set new all-time records
Date	Kind	Detail
2013-03-01	Record low maximum temperature	Record low maximum temperature 5.0 C (41.0 F)
2013-03-02	Record low maximum temperature	Record low maximum temperature 1.7 C (35.1 F)

Wettest Day of Each Month

Aug: 95.8 mm (3.8 in)

The wettest day on record for each calendar month at Dos Arroyos. The most was 95.8 mm (3.8 in) on 3 August 1990.

Record daily precipitation for each month at Dos Arroyos
Month	Record daily precipitation (mm)	Date
Jan	49.8 mm (2.0 in)	24 January 1980
Feb	30.0 mm (1.2 in)	3 February 2010
Mar	23.4 mm (0.9 in)	8 March 1988
Apr	39.9 mm (1.6 in)	9 April 1985
May	39.9 mm (1.6 in)	30 May 2000
Jun	83.8 mm (3.3 in)	18 June 2012
Jul	89.9 mm (3.5 in)	2 July 2010
Aug	95.8 mm (3.8 in)	3 August 1990
Sep	65.3 mm (2.6 in)	3 September 1995
Oct	80.3 mm (3.2 in)	9 October 1997
Nov	34.3 mm (1.4 in)	8 November 1983
Dec	30.5 mm (1.2 in)	3 December 1979

Period of Record Coverage

1972 to 2013

42 years of record at Dos Arroyos, 1972 to 2013. 8 years have data for under 90 percent of days and are left out of rankings: 1972, 1973, 1991, 1992, 1996, 1997, 2002, 2013.

Days with data per year at Dos Arroyos
Year	Days with data	Share of year	Complete
1972	31	8%	No
1973	296	81%	No
1974	365	100%	Yes
1975	365	100%	Yes
1976	360	98%	Yes
1977	363	99%	Yes
1978	362	99%	Yes
1979	348	95%	Yes
1980	361	99%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	334	92%	Yes
1988	365	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	153	42%	No
1992	273	75%	No
1993	365	100%	Yes
1994	365	100%	Yes
1995	364	100%	Yes
1996	265	72%	No
1997	257	70%	No
1998	335	92%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	306	84%	No
2003	365	100%	Yes
2004	335	92%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	335	92%	Yes
2010	364	100%	Yes
2011	365	100%	Yes
2012	363	99%	Yes
2013	82	22%	No

Latest Records

Latest records at Dos Arroyos
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 March 2013	Dos Arroyos, MX	daily low min	1.7 C (35.1 F)	1.1 C (2.0 F)	10 years	11 of 100 (Routine)
30 March 2013	Dos Arroyos, MX	daily low max	15.0 C (59.0 F)	1.7 C (3.1 F)	40 years	20 of 100 (Routine)
29 March 2013	Dos Arroyos, MX	daily low max	13.9 C (57.0 F)	1.7 C (3.1 F)	40 years	20 of 100 (Routine)
28 March 2013	Dos Arroyos, MX	daily low max	15.0 C (59.0 F)	0.6 C (1.1 F)	40 years	17 of 100 (Routine)
26 March 2013	Dos Arroyos, MX	daily low min (Tie)	1.7 C (35.1 F)	tie	27 years	3 of 100 (Routine)
25 March 2013	Dos Arroyos, MX	daily low min (Tie)	0.0 C (32.0 F)	tie	27 years	3 of 100 (Routine)
24 March 2013	Dos Arroyos, MX	daily low max	13.9 C (57.0 F)	1.1 C (2.0 F)	40 years	18 of 100 (Routine)
23 March 2013	Dos Arroyos, MX	daily low max (Tie)	15.0 C (59.0 F)	tie	40 years	4 of 100 (Routine)
19 March 2013	Dos Arroyos, MX	daily low max	13.9 C (57.0 F)	5.0 C (9.0 F)	35 years	26 of 100 (Routine)
16 March 2013	Dos Arroyos, MX	daily low min (Tie)	0.0 C (32.0 F)	tie	27 years	3 of 100 (Routine)
15 March 2013	Dos Arroyos, MX	daily low max	12.8 C (55.0 F)	2.8 C (5.0 F)	40 years	23 of 100 (Routine)
14 March 2013	Dos Arroyos, MX	daily low max	8.9 C (48.0 F)	5.0 C (9.0 F)	40 years	28 of 100 (Routine)
13 March 2013	Dos Arroyos, MX	daily low max	7.8 C (46.0 F)	6.1 C (11.0 F)	40 years	31 of 100 (Routine)
12 March 2013	Dos Arroyos, MX	daily low max	8.9 C (48.0 F)	3.9 C (7.0 F)	36 years	24 of 100 (Routine)
11 March 2013	Dos Arroyos, MX	daily low max	10.0 C (50.0 F)	7.8 C (14.0 F)	40 years	36 of 100 (Notable)
10 March 2013	Dos Arroyos, MX	daily low max	10.0 C (50.0 F)	2.8 C (5.0 F)	34 years	21 of 100 (Routine)
6 March 2013	Dos Arroyos, MX	daily low max	7.8 C (46.0 F)	3.9 C (7.0 F)	34 years	24 of 100 (Routine)
5 March 2013	Dos Arroyos, MX	daily low min (Tie)	0.0 C (32.0 F)	tie	6 years	1 of 100 (Routine)
4 March 2013	Dos Arroyos, MX	daily low max	5.6 C (42.1 F)	6.1 C (11.0 F)	36 years	30 of 100 (Routine)
3 March 2013	Dos Arroyos, MX	daily low max	6.7 C (44.1 F)	5.0 C (9.0 F)	36 years	27 of 100 (Routine)

Climate Trend

30 complete years, 1974 to 2012

One stripe for each of 30 complete years at Dos Arroyos, 1974 to 2012. Blue stripes are years cooler than the station's own mean of 15.7 C (60.2 F); red stripes are warmer. The coolest year was 1978, at 13.6 C (56.4 F), and the warmest was 1995, at 19.9 C (67.9 F). The strongest colour marks a difference of 4.3 C (7.7 F).

Annual mean temperature at Dos Arroyos as warming stripes, 1974 to 2012
Year	Annual mean temperature	Difference from the station mean
1974	14.6 C	-1.07 C
1975	14.2 C	-1.51 C
1976	13.6 C	-2.04 C
1977	13.6 C	-2.02 C
1978	13.6 C	-2.08 C
1979	13.7 C	-2.01 C
1980	14.2 C	-1.49 C
1981	14.8 C	-0.89 C
1982	15.8 C	+0.15 C
1983	15.2 C	-0.43 C
1984	15.4 C	-0.23 C
1985	15.6 C	-0.11 C
1986	15.7 C	+0.04 C
1988	16.1 C	+0.42 C
1989	16.2 C	+0.49 C
1990	16.4 C	+0.75 C
1993	16.1 C	+0.44 C
1994	17.1 C	+1.44 C
1995	19.9 C	+4.26 C
1999	16.2 C	+0.57 C
2000	17.1 C	+1.41 C
2001	16.6 C	+0.95 C
2003	16.4 C	+0.74 C
2005	16.5 C	+0.82 C
2006	16.5 C	+0.83 C
2007	16.2 C	+0.58 C
2008	16.0 C	+0.30 C
2010	15.6 C	-0.04 C
2011	16.5 C	+0.80 C
2012	14.5 C	-1.14 C

The annual mean temperature here has risen by 0.6 C (0.3 to 1.0) per decade over 1974 to 2012. In Fahrenheit: 1.1 F (0.5 to 1.7) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Dos Arroyos
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.6 C (0.3 to 1.0) per decade	1.1 F (0.5 to 1.7) per decade	1974 to 2012	30	Rise
Mean daily maximum	1.3 C (0.7 to 1.9) per decade	2.3 F (1.2 to 3.3) per decade	1974 to 2012	30	Rise
Mean daily minimum	-0.03 C (-0.21 to 0.16) per decade	-0.05 F (-0.39 to 0.29) per decade	1974 to 2012	30	Not clearly different from zero

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

1972 to 2013

Yearly extremes at Dos Arroyos: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.3 C (100.9 F)	1995	32.8 C (91.0 F)	42
Coldest night (TNn)	-6.1 C (21.0 F)	1976	-1.1 C (30.0 F)	42
Wettest day (Rx1day)	95.8 mm (3.8 in)	1990	52.7 mm (2.1 in)	42
Wettest five days (Rx5day)	209.3 mm (8.2 in)	1976	107.5 mm (4.2 in)	42
Longest dry spell (CDD)	182 days	2006	82 days	42

Hottest day (TXx)

The hottest day of the year at Dos Arroyos, 1972 to 2013. The record is 38.3 C (100.9 F) in 1995, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Dos Arroyos by year
Year	Hottest day (TXx)
1972	30.0 C (86.0 F)
1973	32.8 C (91.0 F)
1974	30.0 C (86.0 F)
1975	30.0 C (86.0 F)
1976	30.0 C (86.0 F)
1977	29.4 C (84.9 F)
1978	30.0 C (86.0 F)
1979	29.4 C (84.9 F)
1980	32.8 C (91.0 F)
1981	30.0 C (86.0 F)
1982	33.9 C (93.0 F)
1983	33.9 C (93.0 F)
1984	31.7 C (89.1 F)
1985	32.8 C (91.0 F)
1986	33.3 C (91.9 F)
1987	30.6 C (87.1 F)
1988	32.8 C (91.0 F)
1989	33.3 C (91.9 F)
1990	32.8 C (91.0 F)
1991	28.9 C (84.0 F)
1992	30.0 C (86.0 F)
1993	33.9 C (93.0 F)
1994	32.8 C (91.0 F)
1995	38.3 C (100.9 F)
1996	38.3 C (100.9 F)
1997	37.2 C (99.0 F)
1998	35.0 C (95.0 F)
1999	35.0 C (95.0 F)
2000	35.0 C (95.0 F)
2001	35.0 C (95.0 F)
2002	33.9 C (93.0 F)
2003	31.7 C (89.1 F)
2004	30.0 C (86.0 F)
2005	37.8 C (100.0 F)
2006	33.9 C (93.0 F)
2007	31.7 C (89.1 F)
2008	33.9 C (93.0 F)
2009	33.9 C (93.0 F)
2010	37.8 C (100.0 F)
2011	37.8 C (100.0 F)
2012	35.6 C (96.1 F)
2013	20.0 C (68.0 F)

Coldest night (TNn)

The coldest night of the year at Dos Arroyos, 1972 to 2013. The record is -6.1 C (21.0 F) in 1976, marked on the chart; the median year is -1.1 C (30.0 F).

Coldest night (TNn) at Dos Arroyos by year
Year	Coldest night (TNn)
1972	1.7 C (35.1 F)
1973	-3.3 C (26.1 F)
1974	-5.0 C (23.0 F)
1975	-5.6 C (21.9 F)
1976	-6.1 C (21.0 F)
1977	-1.7 C (28.9 F)
1978	0.0 C (32.0 F)
1979	-3.3 C (26.1 F)
1980	-3.3 C (26.1 F)
1981	-4.4 C (24.1 F)
1982	-2.2 C (28.0 F)
1983	-4.4 C (24.1 F)
1984	-2.8 C (27.0 F)
1985	-5.0 C (23.0 F)
1986	-3.3 C (26.1 F)
1987	-4.4 C (24.1 F)
1988	-1.7 C (28.9 F)
1989	-4.4 C (24.1 F)
1990	-1.1 C (30.0 F)
1991	-2.8 C (27.0 F)
1992	-2.2 C (28.0 F)
1993	0.0 C (32.0 F)
1994	0.0 C (32.0 F)
1995	-1.1 C (30.0 F)
1996	0.0 C (32.0 F)
1997	-3.3 C (26.1 F)
1998	0.6 C (33.1 F)
1999	0.0 C (32.0 F)
2000	0.0 C (32.0 F)
2001	0.0 C (32.0 F)
2002	0.0 C (32.0 F)
2003	0.0 C (32.0 F)
2004	0.0 C (32.0 F)
2005	0.6 C (33.1 F)
2006	0.0 C (32.0 F)
2007	0.0 C (32.0 F)
2008	0.0 C (32.0 F)
2009	0.0 C (32.0 F)
2010	-1.1 C (30.0 F)
2011	0.0 C (32.0 F)
2012	0.0 C (32.0 F)
2013	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Dos Arroyos, 1972 to 2013. The record is 95.8 mm (3.8 in) in 1990, marked on the chart; the median year is 52.7 mm (2.1 in).

Wettest day (Rx1day) at Dos Arroyos by year
Year	Wettest day (Rx1day)
1972	56.9 mm (2.2 in)
1973	85.3 mm (3.4 in)
1974	56.9 mm (2.2 in)
1975	59.9 mm (2.4 in)
1976	70.9 mm (2.8 in)
1977	52.1 mm (2.1 in)
1978	56.9 mm (2.2 in)
1979	60.5 mm (2.4 in)
1980	76.2 mm (3.0 in)
1981	39.9 mm (1.6 in)
1982	41.4 mm (1.6 in)
1983	66.8 mm (2.6 in)
1984	48.3 mm (1.9 in)
1985	63.8 mm (2.5 in)
1986	48.8 mm (1.9 in)
1987	46.0 mm (1.8 in)
1988	60.2 mm (2.4 in)
1989	49.3 mm (1.9 in)
1990	95.8 mm (3.8 in)
1991	60.2 mm (2.4 in)
1992	34.8 mm (1.4 in)
1993	42.9 mm (1.7 in)
1994	31.8 mm (1.3 in)
1995	65.3 mm (2.6 in)
1996	53.3 mm (2.1 in)
1997	80.3 mm (3.2 in)
1998	39.9 mm (1.6 in)
1999	30.0 mm (1.2 in)
2000	39.9 mm (1.6 in)
2001	41.9 mm (1.6 in)
2002	45.0 mm (1.8 in)
2003	45.0 mm (1.8 in)
2004	63.8 mm (2.5 in)
2005	22.9 mm (0.9 in)
2006	30.0 mm (1.2 in)
2007	49.8 mm (2.0 in)
2008	59.9 mm (2.4 in)
2009	39.9 mm (1.6 in)
2010	89.9 mm (3.5 in)
2011	59.9 mm (2.4 in)
2012	83.8 mm (3.3 in)
2013	9.9 mm (0.39 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dos Arroyos, 1972 to 2013. The record is 209.3 mm (8.2 in) in 1976, marked on the chart; the median year is 107.5 mm (4.2 in).

Wettest five days (Rx5day) at Dos Arroyos by year
Year	Wettest five days (Rx5day)
1972	142.0 mm (5.6 in)
1973	148.6 mm (5.9 in)
1974	82.5 mm (3.2 in)
1975	133.3 mm (5.2 in)
1976	209.3 mm (8.2 in)
1977	107.2 mm (4.2 in)
1978	124.7 mm (4.9 in)
1979	95.6 mm (3.8 in)
1980	154.1 mm (6.1 in)
1981	80.5 mm (3.2 in)
1982	99.6 mm (3.9 in)
1983	143.3 mm (5.6 in)
1984	112.0 mm (4.4 in)
1985	101.4 mm (4.0 in)
1986	107.0 mm (4.2 in)
1987	75.0 mm (3.0 in)
1988	137.7 mm (5.4 in)
1989	107.7 mm (4.2 in)
1990	145.8 mm (5.7 in)
1991	115.3 mm (4.5 in)
1992	78.9 mm (3.1 in)
1993	125.2 mm (4.9 in)
1994	53.3 mm (2.1 in)
1995	106.5 mm (4.2 in)
1996	128.0 mm (5.0 in)
1997	101.9 mm (4.0 in)
1998	125.7 mm (4.9 in)
1999	90.9 mm (3.6 in)
2000	60.0 mm (2.4 in)
2001	142.3 mm (5.6 in)
2002	81.4 mm (3.2 in)
2003	119.4 mm (4.7 in)
2004	103.4 mm (4.1 in)
2005	83.0 mm (3.3 in)
2006	99.6 mm (3.9 in)
2007	77.5 mm (3.1 in)
2008	159.2 mm (6.3 in)
2009	99.3 mm (3.9 in)
2010	119.6 mm (4.7 in)
2011	114.5 mm (4.5 in)
2012	179.0 mm (7.0 in)
2013	10.7 mm (0.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dos Arroyos, 1972 to 2013. The record is 182 days in 2006, marked on the chart; the median year is 82 days.

Longest dry spell (CDD) at Dos Arroyos by year
Year	Longest dry spell (CDD)
1972	30 days
1973	55 days
1974	41 days
1975	110 days
1976	59 days
1977	52 days
1978	42 days
1979	64 days
1980	35 days
1981	34 days
1982	50 days
1983	73 days
1984	72 days
1985	49 days
1986	104 days
1987	92 days
1988	65 days
1989	100 days
1990	60 days
1991	53 days
1992	42 days
1993	50 days
1994	84 days
1995	84 days
1996	126 days
1997	77 days
1998	151 days
1999	108 days
2000	150 days
2001	155 days
2002	86 days
2003	115 days
2004	43 days
2005	85 days
2006	182 days
2007	82 days
2008	158 days
2009	88 days
2010	99 days
2011	171 days
2012	126 days
2013	82 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.

Frost Dates and Growing Season

22 years with a frost

Across 22 years with a frost, the median last spring frost at Dos Arroyos falls on 21 February and the median first autumn frost on 26 November, which leaves a median of 273 days between them.

Frost dates and growing season at Dos Arroyos
Measure	Median, all years	Earliest period	Recent period (1974 to 2012)	Recent against earliest	Fitted trend
Last spring frost	21 February	n/a	21 February	n/a	n/a
First autumn frost	26 November	n/a	26 November	n/a	n/a
Growing days	273 days	n/a	273 days	n/a	n/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

36 years, 1973 to 2012

A day with at least 53.0 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 106.9 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Dos Arroyos: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	53.0 mm (2.1 in)
5 years	69.4 mm (2.7 in)
10 years	79.4 mm (3.1 in)
25 years	91.2 mm (3.6 in)
50 years	99.3 mm (3.9 in)	Longer than the 36 years of record
100 years	106.9 mm (4.2 in)	Longer than the 36 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, 36 years of values from 1973 to 2012.

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: 95.8 mm (3.8 in) in 1990; 89.9 mm (3.5 in) in 2010; 85.3 mm (3.4 in) in 1973.

Download the Data

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