Mixquiahuala (Smn) Weather Records (MXN00013018)

Record envelope, standing records and threshold days for Mixquiahuala (Smn) (MXN00013018), Mexico, with 60 years of record.

Key Facts for Mixquiahuala (Smn)

Mixquiahuala (Smn) (MXN00013018) is a weather station in Mexico at 20.23 latitude and -99.22 longitude, 2,000 m (6,561 ft) above sea level.
The station reports from 1951 to 2010, 60 years of record.
1,464 records set at Mixquiahuala (Smn) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Mixquiahuala (Smn) set a daily record low minimum temperature of 0.0 C (32.0 F) on 8 November 2010.

About the Station

Location: Mexico, 20.23 latitude, -99.22 longitude.
Elevation: 2,000 m (6,561 ft).
Period of record: 1951 to 2010, 60 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 Mixquiahuala (Smn). 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 Mixquiahuala (Smn), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.9 C (93.0 F)	-8.3 C (17.1 F)	n/a	n/a
Feb	37.8 C (100.0 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	35.6 C (96.1 F)	-3.9 C (25.0 F)	n/a	n/a
Apr	37.8 C (100.0 F)	0.6 C (33.1 F)	n/a	n/a
May	39.4 C (102.9 F)	0.0 C (32.0 F)	n/a	n/a
Jun	36.7 C (98.1 F)	0.6 C (33.1 F)	n/a	n/a
Jul	37.8 C (100.0 F)	2.8 C (37.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	5.0 C (41.0 F)	n/a	n/a
Sep	32.8 C (91.0 F)	2.8 C (37.0 F)	n/a	n/a
Oct	31.1 C (88.0 F)	-2.8 C (27.0 F)	n/a	n/a
Nov	32.8 C (91.0 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	36.7 C (98.1 F)	-3.3 C (26.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Mixquiahuala (Smn) still stand. 1964 holds the most, with 67.

Standing records at Mixquiahuala (Smn) by the year they were set
Year set	Standing records
1951	41
1952	55
1953	31
1954	17
1955	43
1956	33
1957	18
1958	41
1961	64
1962	23
1963	13
1964	67
1965	16
1966	32
1967	12
1968	12
1969	31
1970	24
1971	28
1972	29
1973	34
1974	53
1975	34
1976	30
1977	35
1978	37
1979	66
1980	29
1981	24
1982	16
1983	18
1984	30
1985	21
1986	21
1987	25
1988	22
1989	15
1990	18
1991	8
1992	4
1993	10
1994	4
1996	19
1997	26
1998	16
1999	47
2000	40
2001	13
2002	17
2003	23
2004	12
2005	19
2006	9
2007	8
2008	6
2009	8
2010	17

All-Time Record Progression

1 new records

1 all-time records were set at Mixquiahuala (Smn) between 13 December 1997 and 13 December 1997. Each dot is a new record.

Wettest Day of Each Month

Sep: 134.9 mm (5.3 in)

The wettest day on record for each calendar month at Mixquiahuala (Smn). The most was 134.9 mm (5.3 in) on 24 September 1973.

Record daily precipitation for each month at Mixquiahuala (Smn)
Month	Record daily precipitation (mm)	Date
Jan	33.3 mm (1.3 in)	28 January 1992
Feb	40.4 mm (1.6 in)	26 February 1994
Mar	50.3 mm (2.0 in)	29 March 2004
Apr	47.8 mm (1.9 in)	29 April 1961
May	58.9 mm (2.3 in)	23 May 1954
Jun	104.4 mm (4.1 in)	4 June 1986
Jul	66.8 mm (2.6 in)	5 July 1964
Aug	65.8 mm (2.6 in)	29 August 2009
Sep	134.9 mm (5.3 in)	24 September 1973
Oct	46.0 mm (1.8 in)	1 October 1998
Nov	49.8 mm (2.0 in)	5 November 2002
Dec	15.5 mm (0.6 in)	3 December 1979

Period of Record Coverage

1951 to 2010

58 years of record at Mixquiahuala (Smn), 1951 to 2010. 13 years have data for under 90 percent of days and are left out of rankings: 1951, 1952, 1954, 1956, 1957, 1958, 1986, 1990 and others.

Days with data per year at Mixquiahuala (Smn)
Year	Days with data	Share of year	Complete
1951	326	89%	No
1952	325	89%	No
1953	359	98%	Yes
1954	298	82%	No
1955	336	92%	Yes
1956	314	86%	No
1957	321	88%	No
1958	302	83%	No
1961	364	100%	Yes
1962	365	100%	Yes
1963	363	99%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	364	99%	Yes
1973	364	100%	Yes
1974	333	91%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	364	100%	Yes
1979	363	99%	Yes
1980	364	99%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	306	84%	No
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	245	67%	No
1991	365	100%	Yes
1992	305	83%	No
1993	303	83%	No
1994	58	16%	No
1995	58	16%	No
1996	336	92%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	364	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	303	83%	No
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes

Latest Records

Latest records at Mixquiahuala (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 November 2010	Mixquiahuala (Smn), MX	daily low min	0.0 C (32.0 F)	1.7 C (3.1 F)	21 years	17 of 100 (Routine)
7 November 2010	Mixquiahuala (Smn), MX	daily low min	-1.1 C (30.0 F)	1.7 C (3.1 F)	5 years	12 of 100 (Routine)
6 November 2010	Mixquiahuala (Smn), MX	daily low min (Tie)	-0.6 C (30.9 F)	tie	28 years	3 of 100 (Routine)
5 November 2010	Mixquiahuala (Smn), MX	daily low min	-0.6 C (30.9 F)	0.6 C (1.1 F)	24 years	14 of 100 (Routine)
29 October 2010	Mixquiahuala (Smn), MX	daily low max	12.8 C (55.0 F)	1.1 C (2.0 F)	47 years	23 of 100 (Routine)
27 October 2010	Mixquiahuala (Smn), MX	daily high max (Tie)	29.4 C (84.9 F)	tie	59 years	5 of 100 (Routine)
23 October 2010	Mixquiahuala (Smn), MX	daily high max (Tie)	30.0 C (86.0 F)	tie	35 years	4 of 100 (Routine)
5 October 2010	Mixquiahuala (Smn), MX	daily low min	3.9 C (39.0 F)	1.7 C (3.1 F)	36 years	21 of 100 (Routine)
18 September 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.0 C (59.0 F)	tie	37 years	4 of 100 (Routine)
9 September 2010	Mixquiahuala (Smn), MX	daily high max (Tie)	28.9 C (84.0 F)	tie	48 years	5 of 100 (Routine)
19 August 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.0 C (59.0 F)	tie	35 years	4 of 100 (Routine)
12 August 2010	Mixquiahuala (Smn), MX	daily rain	11.2 mm (0.4 in)	2.3 mm (0.09 in)	17 years	13 of 100 (Routine)
10 August 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.6 C (60.1 F)	tie	32 years	3 of 100 (Routine)
9 August 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.0 C (59.0 F)	tie	52 years	5 of 100 (Routine)
8 August 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.0 C (59.0 F)	tie	36 years	4 of 100 (Routine)
29 July 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.0 C (59.0 F)	tie	32 years	3 of 100 (Routine)
25 July 2010	Mixquiahuala (Smn), MX	daily low max	17.8 C (64.0 F)	2.2 C (4.0 F)	37 years	25 of 100 (Routine)
24 July 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.0 C (59.0 F)	tie	32 years	3 of 100 (Routine)
23 July 2010	Mixquiahuala (Smn), MX	daily high min (Tie)	15.0 C (59.0 F)	tie	32 years	3 of 100 (Routine)
22 July 2010	Mixquiahuala (Smn), MX	daily rain	13.2 mm (0.5 in)	1.3 mm (0.05 in)	55 years	20 of 100 (Routine)

Climate Trend

42 complete years, 1955 to 2010

One stripe for each of 42 complete years at Mixquiahuala (Smn), 1955 to 2010. Blue stripes are years cooler than the station's own mean of 17.0 C (62.6 F); red stripes are warmer. The coolest year was 1999, at 15.4 C (59.7 F), and the warmest was 1975, at 18.2 C (64.8 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Mixquiahuala (Smn) as warming stripes, 1955 to 2010
Year	Annual mean temperature	Difference from the station mean
1955	17.0 C	+0.03 C
1956	16.6 C	-0.44 C
1961	17.8 C	+0.79 C
1962	16.3 C	-0.69 C
1963	17.1 C	+0.05 C
1964	17.5 C	+0.51 C
1965	17.1 C	+0.04 C
1966	17.0 C	-0.03 C
1967	17.1 C	+0.07 C
1968	17.0 C	-0.06 C
1969	17.6 C	+0.58 C
1970	17.0 C	+0.00 C
1971	16.7 C	-0.35 C
1972	16.7 C	-0.27 C
1973	17.2 C	+0.20 C
1975	18.2 C	+1.21 C
1977	18.0 C	+0.99 C
1978	17.7 C	+0.65 C
1979	18.0 C	+0.99 C
1980	16.5 C	-0.50 C
1981	16.5 C	-0.54 C
1982	17.3 C	+0.27 C
1983	17.0 C	+0.02 C
1984	16.4 C	-0.64 C
1985	16.4 C	-0.57 C
1987	16.3 C	-0.74 C
1988	16.3 C	-0.74 C
1989	16.4 C	-0.63 C
1991	17.1 C	+0.10 C
1997	15.7 C	-1.32 C
1998	16.5 C	-0.47 C
1999	15.4 C	-1.64 C
2000	15.5 C	-1.48 C
2001	16.5 C	-0.56 C
2002	17.6 C	+0.56 C
2003	17.9 C	+0.85 C
2004	17.7 C	+0.66 C
2005	17.9 C	+0.92 C
2006	17.6 C	+0.62 C
2008	17.4 C	+0.41 C
2009	17.9 C	+0.90 C
2010	17.1 C	+0.11 C

The fitted trend in annual mean temperature here over 1955 to 2010 is -0.01 C (-0.15 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.26 to 0.23) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Mixquiahuala (Smn)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.01 C (-0.15 to 0.13) per decade	-0.02 F (-0.26 to 0.23) per decade	1955 to 2010	42	Not clearly different from zero
Mean daily maximum	0.00 C (-0.16 to 0.17) per decade	0.00 F (-0.29 to 0.30) per decade	1955 to 2010	42	Not clearly different from zero
Mean daily minimum	-0.02 C (-0.23 to 0.18) per decade	-0.05 F (-0.42 to 0.33) per decade	1955 to 2010	42	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

1951 to 2010

Yearly extremes at Mixquiahuala (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	1964	33.9 C (93.0 F)	58
Coldest night (TNn)	-8.3 C (17.1 F)	1956	-2.2 C (28.0 F)	58
Wettest day (Rx1day)	134.9 mm (5.3 in)	1973	44.5 mm (1.8 in)	58
Wettest five days (Rx5day)	169.7 mm (6.7 in)	1986	73.6 mm (2.9 in)	58
Longest dry spell (CDD)	135 days	1998	58 days	58

Hottest day (TXx)

The hottest day of the year at Mixquiahuala (Smn), 1951 to 2010. The record is 39.4 C (102.9 F) in 1964, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Mixquiahuala (Smn) by year
Year	Hottest day (TXx)
1951	32.8 C (91.0 F)
1952	37.8 C (100.0 F)
1953	35.0 C (95.0 F)
1954	32.2 C (90.0 F)
1955	33.9 C (93.0 F)
1956	33.9 C (93.0 F)
1957	33.9 C (93.0 F)
1958	32.8 C (91.0 F)
1961	37.8 C (100.0 F)
1962	36.7 C (98.1 F)
1963	32.8 C (91.0 F)
1964	39.4 C (102.9 F)
1965	32.8 C (91.0 F)
1966	37.8 C (100.0 F)
1967	33.9 C (93.0 F)
1968	33.3 C (91.9 F)
1969	35.6 C (96.1 F)
1970	35.0 C (95.0 F)
1971	35.0 C (95.0 F)
1972	35.6 C (96.1 F)
1973	33.9 C (93.0 F)
1974	33.9 C (93.0 F)
1975	35.0 C (95.0 F)
1976	33.9 C (93.0 F)
1977	34.4 C (93.9 F)
1978	35.0 C (95.0 F)
1979	33.9 C (93.0 F)
1980	31.1 C (88.0 F)
1981	31.1 C (88.0 F)
1982	33.3 C (91.9 F)
1983	35.6 C (96.1 F)
1984	35.6 C (96.1 F)
1985	32.2 C (90.0 F)
1986	32.2 C (90.0 F)
1987	31.1 C (88.0 F)
1988	33.9 C (93.0 F)
1989	33.3 C (91.9 F)
1990	33.9 C (93.0 F)
1991	32.8 C (91.0 F)
1992	30.0 C (86.0 F)
1993	32.8 C (91.0 F)
1994	27.2 C (81.0 F)
1995	28.3 C (82.9 F)
1996	32.2 C (90.0 F)
1997	31.1 C (88.0 F)
1998	35.6 C (96.1 F)
1999	33.9 C (93.0 F)
2000	32.2 C (90.0 F)
2001	32.8 C (91.0 F)
2002	33.9 C (93.0 F)
2003	35.0 C (95.0 F)
2004	33.9 C (93.0 F)
2005	33.9 C (93.0 F)
2006	33.9 C (93.0 F)
2007	31.7 C (89.1 F)
2008	33.9 C (93.0 F)
2009	32.8 C (91.0 F)
2010	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Mixquiahuala (Smn), 1951 to 2010. The record is -8.3 C (17.1 F) in 1956, marked on the chart; the median year is -2.2 C (28.0 F).

Coldest night (TNn) at Mixquiahuala (Smn) by year
Year	Coldest night (TNn)
1951	0.0 C (32.0 F)
1952	0.0 C (32.0 F)
1953	0.0 C (32.0 F)
1954	-2.2 C (28.0 F)
1955	-2.2 C (28.0 F)
1956	-8.3 C (17.1 F)
1957	-2.2 C (28.0 F)
1958	-1.1 C (30.0 F)
1961	-1.1 C (30.0 F)
1962	-2.2 C (28.0 F)
1963	-4.4 C (24.1 F)
1964	-1.1 C (30.0 F)
1965	-3.3 C (26.1 F)
1966	-2.2 C (28.0 F)
1967	-3.3 C (26.1 F)
1968	-3.3 C (26.1 F)
1969	-1.7 C (28.9 F)
1970	-5.0 C (23.0 F)
1971	0.0 C (32.0 F)
1972	0.6 C (33.1 F)
1973	-2.2 C (28.0 F)
1974	-5.0 C (23.0 F)
1975	-2.2 C (28.0 F)
1976	-4.4 C (24.1 F)
1977	0.6 C (33.1 F)
1978	-1.1 C (30.0 F)
1979	-2.2 C (28.0 F)
1980	-1.7 C (28.9 F)
1981	-0.6 C (30.9 F)
1982	-2.2 C (28.0 F)
1983	-4.4 C (24.1 F)
1984	-4.4 C (24.1 F)
1985	-5.0 C (23.0 F)
1986	-6.1 C (21.0 F)
1987	-3.3 C (26.1 F)
1988	-6.1 C (21.0 F)
1989	-3.3 C (26.1 F)
1990	-2.2 C (28.0 F)
1991	1.1 C (34.0 F)
1992	0.0 C (32.0 F)
1993	0.0 C (32.0 F)
1994	0.0 C (32.0 F)
1995	0.0 C (32.0 F)
1996	-3.3 C (26.1 F)
1997	0.0 C (32.0 F)
1998	0.0 C (32.0 F)
1999	-5.0 C (23.0 F)
2000	-3.3 C (26.1 F)
2001	-2.2 C (28.0 F)
2002	-2.2 C (28.0 F)
2003	-2.2 C (28.0 F)
2004	-1.1 C (30.0 F)
2005	0.6 C (33.1 F)
2006	-1.1 C (30.0 F)
2007	1.7 C (35.1 F)
2008	-2.2 C (28.0 F)
2009	0.6 C (33.1 F)
2010	-1.1 C (30.0 F)

Wettest day (Rx1day)

The wettest day of the year at Mixquiahuala (Smn), 1951 to 2010. The record is 134.9 mm (5.3 in) in 1973, marked on the chart; the median year is 44.5 mm (1.8 in).

Wettest day (Rx1day) at Mixquiahuala (Smn) by year
Year	Wettest day (Rx1day)
1951	51.8 mm (2.0 in)
1952	43.9 mm (1.7 in)
1953	37.8 mm (1.5 in)
1954	58.9 mm (2.3 in)
1955	46.0 mm (1.8 in)
1956	20.8 mm (0.8 in)
1957	41.9 mm (1.6 in)
1958	36.8 mm (1.4 in)
1961	47.8 mm (1.9 in)
1962	42.9 mm (1.7 in)
1963	35.3 mm (1.4 in)
1964	66.8 mm (2.6 in)
1965	51.8 mm (2.0 in)
1966	47.8 mm (1.9 in)
1967	31.8 mm (1.3 in)
1968	45.0 mm (1.8 in)
1969	58.9 mm (2.3 in)
1970	19.8 mm (0.8 in)
1971	41.9 mm (1.6 in)
1972	27.9 mm (1.1 in)
1973	134.9 mm (5.3 in)
1974	68.6 mm (2.7 in)
1975	42.9 mm (1.7 in)
1976	64.8 mm (2.6 in)
1977	58.4 mm (2.3 in)
1978	31.0 mm (1.2 in)
1979	33.8 mm (1.3 in)
1980	46.5 mm (1.8 in)
1981	40.9 mm (1.6 in)
1982	41.4 mm (1.6 in)
1983	28.4 mm (1.1 in)
1984	40.9 mm (1.6 in)
1985	53.8 mm (2.1 in)
1986	104.4 mm (4.1 in)
1987	40.4 mm (1.6 in)
1988	53.8 mm (2.1 in)
1989	91.4 mm (3.6 in)
1990	73.2 mm (2.9 in)
1991	56.9 mm (2.2 in)
1992	33.3 mm (1.3 in)
1993	50.3 mm (2.0 in)
1994	40.4 mm (1.6 in)
1995	40.4 mm (1.6 in)
1996	28.2 mm (1.1 in)
1997	48.3 mm (1.9 in)
1998	46.0 mm (1.8 in)
1999	63.8 mm (2.5 in)
2000	36.8 mm (1.4 in)
2001	38.4 mm (1.5 in)
2002	49.8 mm (2.0 in)
2003	39.4 mm (1.6 in)
2004	50.3 mm (2.0 in)
2005	25.9 mm (1.0 in)
2006	58.9 mm (2.3 in)
2007	63.0 mm (2.5 in)
2008	38.9 mm (1.5 in)
2009	65.8 mm (2.6 in)
2010	34.3 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mixquiahuala (Smn), 1951 to 2010. The record is 169.7 mm (6.7 in) in 1986, marked on the chart; the median year is 73.6 mm (2.9 in).

Wettest five days (Rx5day) at Mixquiahuala (Smn) by year
Year	Wettest five days (Rx5day)
1951	56.4 mm (2.2 in)
1952	88.2 mm (3.5 in)
1953	51.8 mm (2.0 in)
1954	99.8 mm (3.9 in)
1955	67.6 mm (2.7 in)
1956	31.8 mm (1.3 in)
1957	56.6 mm (2.2 in)
1958	86.4 mm (3.4 in)
1961	57.5 mm (2.3 in)
1962	60.4 mm (2.4 in)
1963	78.0 mm (3.1 in)
1964	75.5 mm (3.0 in)
1965	65.3 mm (2.6 in)
1966	62.3 mm (2.5 in)
1967	80.1 mm (3.2 in)
1968	84.1 mm (3.3 in)
1969	70.6 mm (2.8 in)
1970	61.8 mm (2.4 in)
1971	90.5 mm (3.6 in)
1972	49.0 mm (1.9 in)
1973	151.2 mm (6.0 in)
1974	99.9 mm (3.9 in)
1975	122.9 mm (4.8 in)
1976	103.1 mm (4.1 in)
1977	104.9 mm (4.1 in)
1978	43.9 mm (1.7 in)
1979	67.3 mm (2.6 in)
1980	59.5 mm (2.3 in)
1981	83.1 mm (3.3 in)
1982	50.8 mm (2.0 in)
1983	65.8 mm (2.6 in)
1984	58.8 mm (2.3 in)
1985	73.8 mm (2.9 in)
1986	169.7 mm (6.7 in)
1987	64.2 mm (2.5 in)
1988	83.1 mm (3.3 in)
1989	108.2 mm (4.3 in)
1990	122.8 mm (4.8 in)
1991	59.7 mm (2.4 in)
1992	78.6 mm (3.1 in)
1993	65.4 mm (2.6 in)
1994	76.7 mm (3.0 in)
1995	67.3 mm (2.6 in)
1996	63.5 mm (2.5 in)
1997	78.5 mm (3.1 in)
1998	73.4 mm (2.9 in)
1999	91.4 mm (3.6 in)
2000	77.0 mm (3.0 in)
2001	90.6 mm (3.6 in)
2002	52.4 mm (2.1 in)
2003	64.8 mm (2.6 in)
2004	100.4 mm (4.0 in)
2005	65.1 mm (2.6 in)
2006	62.7 mm (2.5 in)
2007	114.7 mm (4.5 in)
2008	66.8 mm (2.6 in)
2009	105.0 mm (4.1 in)
2010	84.9 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mixquiahuala (Smn), 1951 to 2010. The record is 135 days in 1998, marked on the chart; the median year is 58 days.

Longest dry spell (CDD) at Mixquiahuala (Smn) by year
Year	Longest dry spell (CDD)
1951	73 days
1952	55 days
1953	51 days
1954	50 days
1955	74 days
1956	108 days
1957	107 days
1958	55 days
1961	95 days
1962	101 days
1963	59 days
1964	44 days
1965	35 days
1966	58 days
1967	62 days
1968	37 days
1969	85 days
1970	77 days
1971	68 days
1972	36 days
1973	82 days
1974	46 days
1975	92 days
1976	47 days
1977	44 days
1978	22 days
1979	52 days
1980	37 days
1981	35 days
1982	55 days
1983	68 days
1984	47 days
1985	54 days
1986	43 days
1987	76 days
1988	90 days
1989	49 days
1990	37 days
1991	55 days
1992	46 days
1993	77 days
1994	33 days
1995	56 days
1996	123 days
1997	51 days
1998	135 days
1999	104 days
2000	70 days
2001	57 days
2002	56 days
2003	60 days
2004	59 days
2005	83 days
2006	58 days
2007	29 days
2008	102 days
2009	82 days
2010	64 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

21 years with a frost

Across 21 years with a frost, the median last spring frost at Mixquiahuala (Smn) falls on 14 February and the median first autumn frost on 23 November, which leaves a median of 297 days between them.

Frost dates and growing season at Mixquiahuala (Smn)
Measure	Median, all years	Earliest period	Recent period (1955 to 2006)	Recent against earliest	Fitted trend
Last spring frost	14 February	n/a	14 February	n/a	n/a
First autumn frost	23 November	n/a	23 November	n/a	n/a
Growing days	297 days	n/a	297 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

49 years, 1951 to 2010

A day with at least 44.0 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 108.3 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Mixquiahuala (Smn): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.0 mm (1.7 in)
5 years	58.4 mm (2.3 in)
10 years	68.9 mm (2.7 in)
25 years	83.6 mm (3.3 in)
50 years	95.5 mm (3.8 in)	Longer than the 49 years of record
100 years	108.3 mm (4.3 in)	Longer than the 49 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, 49 years of values from 1951 to 2010.

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: 134.9 mm (5.3 in) in 1973; 91.4 mm (3.6 in) in 1989; 68.6 mm (2.7 in) in 1974.

Download the Data

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