Choix (Smn) Weather Records (MXN00025018)

Record envelope, standing records and threshold days for Choix (Smn) (MXN00025018), Mexico, with 33 years of record.

Key Facts for Choix (Smn)

Choix (Smn) (MXN00025018) is a weather station in Mexico at 26.72 latitude and -108.28 longitude, 311 m (1,020 ft) above sea level.
The station reports from 1953 to 1985, 33 years of record.
1,464 records set at Choix (Smn) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Choix (Smn) set a daily record high minimum temperature of 25.6 C (78.1 F) on 30 August 1985.

About the Station

Location: Mexico, 26.72 latitude, -108.28 longitude.
Elevation: 311 m (1,020 ft).
Period of record: 1953 to 1985, 33 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 Choix (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 Choix (Smn), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	37.8 C (100.0 F)	-3.3 C (26.1 F)	n/a	n/a
Feb	40.0 C (104.0 F)	-1.7 C (28.9 F)	n/a	n/a
Mar	42.8 C (109.0 F)	0.0 C (32.0 F)	n/a	n/a
Apr	45.6 C (114.1 F)	3.9 C (39.0 F)	n/a	n/a
May	47.8 C (118.0 F)	7.8 C (46.0 F)	n/a	n/a
Jun	47.2 C (117.0 F)	7.8 C (46.0 F)	n/a	n/a
Jul	46.1 C (115.0 F)	17.2 C (63.0 F)	n/a	n/a
Aug	44.4 C (111.9 F)	17.8 C (64.0 F)	n/a	n/a
Sep	44.4 C (111.9 F)	12.2 C (54.0 F)	n/a	n/a
Oct	43.3 C (109.9 F)	7.8 C (46.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	0.0 C (32.0 F)	n/a	n/a
Dec	38.3 C (100.9 F)	-1.1 C (30.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Choix (Smn) still stand. 1953 holds the most, with 89.

Standing records at Choix (Smn) by the year they were set
Year set	Standing records
1953	89
1954	66
1955	47
1956	53
1957	76
1958	83
1959	55
1960	48
1961	39
1962	55
1963	44
1964	61
1965	53
1966	31
1967	44
1968	43
1969	40
1970	13
1971	38
1972	31
1973	48
1974	31
1975	40
1976	27
1977	37
1978	30
1979	44
1980	28
1981	37
1982	30
1983	38
1984	41
1985	24

Wettest Day of Each Month

Sep: 150.6 mm (5.9 in)

The wettest day on record for each calendar month at Choix (Smn). The most was 150.6 mm (5.9 in) on 13 September 1968.

Record daily precipitation for each month at Choix (Smn)
Month	Record daily precipitation (mm)	Date
Jan	95.0 mm (3.7 in)	2 January 1955
Feb	39.6 mm (1.6 in)	7 February 1965
Mar	62.0 mm (2.4 in)	3 March 1983
Apr	32.8 mm (1.3 in)	8 April 1959
May	55.4 mm (2.2 in)	29 May 1972
Jun	112.5 mm (4.4 in)	25 June 1966
Jul	114.3 mm (4.5 in)	25 July 1970
Aug	110.0 mm (4.3 in)	9 August 1958
Sep	150.6 mm (5.9 in)	13 September 1968
Oct	102.9 mm (4.1 in)	1 October 1976
Nov	71.9 mm (2.8 in)	8 November 1974
Dec	71.9 mm (2.8 in)	8 December 1982

Period of Record Coverage

1953 to 1985

33 years of record at Choix (Smn), 1953 to 1985. 2 years have data for under 90 percent of days and are left out of rankings: 1957, 1985.

Days with data per year at Choix (Smn)
Year	Days with data	Share of year	Complete
1953	334	92%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	304	83%	No
1958	365	100%	Yes
1959	337	92%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	363	99%	Yes
1964	365	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	364	100%	Yes
1968	366	100%	Yes
1969	363	99%	Yes
1970	364	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	360	99%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	352	96%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	242	66%	No

Latest Records

Latest records at Choix (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 1985	Choix (Smn), MX	daily high min	25.6 C (78.1 F)	1.2 C (2.2 F)	23 years	16 of 100 (Routine)
26 August 1985	Choix (Smn), MX	daily low max (Tie)	31.7 C (89.1 F)	tie	19 years	2 of 100 (Routine)
25 August 1985	Choix (Smn), MX	daily low max	30.0 C (86.0 F)	0.6 C (1.1 F)	11 years	8 of 100 (Routine)
24 August 1985	Choix (Smn), MX	daily high min (Tie)	25.0 C (77.0 F)	tie	28 years	2 of 100 (Routine)
23 August 1985	Choix (Smn), MX	daily high min (Tie)	25.0 C (77.0 F)	tie	31 years	3 of 100 (Routine)
12 August 1985	Choix (Smn), MX	daily low min (Tie)	20.0 C (68.0 F)	tie	28 years	2 of 100 (Routine)
5 August 1985	Choix (Smn), MX	daily low max	31.7 C (89.1 F)	1.1 C (2.0 F)	0 years	7 of 100 (Routine)
31 July 1985	Choix (Smn), MX	daily low max	28.9 C (84.0 F)	1.1 C (2.0 F)	20 years	12 of 100 (Routine)
27 July 1985	Choix (Smn), MX	daily low max	30.6 C (87.1 F)	2.2 C (4.0 F)	27 years	17 of 100 (Routine)
26 July 1985	Choix (Smn), MX	monthly low max (Tie)	27.8 C (82.0 F)	tie	30 years	5 of 100 (Routine)
25 July 1985	Choix (Smn), MX	daily low max	30.6 C (87.1 F)	1.1 C (2.0 F)	16 years	11 of 100 (Routine)
23 July 1985	Choix (Smn), MX	monthly low max (Tie)	27.8 C (82.0 F)	tie	30 years	5 of 100 (Routine)
22 July 1985	Choix (Smn), MX	daily rain	40.4 mm (1.6 in)	13.2 mm (0.5 in)	20 years	17 of 100 (Routine)
21 July 1985	Choix (Smn), MX	daily rain	40.4 mm (1.6 in)	4.6 mm (0.18 in)	27 years	13 of 100 (Routine)
16 July 1985	Choix (Smn), MX	daily low max (Tie)	30.0 C (86.0 F)	tie	16 years	2 of 100 (Routine)
15 July 1985	Choix (Smn), MX	daily low min	20.6 C (69.1 F)	0.5 C (0.9 F)	28 years	13 of 100 (Routine)
14 July 1985	Choix (Smn), MX	daily low min (Tie)	20.6 C (69.1 F)	tie	8 years	1 of 100 (Routine)
12 July 1985	Choix (Smn), MX	daily low min (Tie)	20.6 C (69.1 F)	tie	24 years	2 of 100 (Routine)
10 July 1985	Choix (Smn), MX	daily low min (Tie)	20.6 C (69.1 F)	tie	18 years	2 of 100 (Routine)
9 July 1985	Choix (Smn), MX	daily low min	20.0 C (68.0 F)	0.6 C (1.1 F)	14 years	10 of 100 (Routine)

Climate Trend

29 complete years, 1954 to 1984

One stripe for each of 29 complete years at Choix (Smn), 1954 to 1984. Blue stripes are years cooler than the station's own mean of 24.3 C (75.7 F); red stripes are warmer. The coolest year was 1984, at 22.9 C (73.1 F), and the warmest was 1954, at 26.1 C (78.9 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Choix (Smn) as warming stripes, 1954 to 1984
Year	Annual mean temperature	Difference from the station mean
1954	26.1 C	+1.79 C
1955	25.2 C	+0.93 C
1956	24.9 C	+0.59 C
1958	25.6 C	+1.35 C
1960	24.2 C	-0.11 C
1961	23.9 C	-0.34 C
1962	24.3 C	+0.08 C
1963	24.6 C	+0.32 C
1964	23.7 C	-0.54 C
1965	24.0 C	-0.22 C
1966	24.1 C	-0.12 C
1967	24.1 C	-0.20 C
1968	23.6 C	-0.65 C
1969	24.3 C	+0.05 C
1970	24.3 C	+0.06 C
1971	23.7 C	-0.56 C
1972	24.1 C	-0.19 C
1973	23.9 C	-0.39 C
1974	24.1 C	-0.21 C
1975	23.6 C	-0.62 C
1976	24.2 C	-0.10 C
1977	24.9 C	+0.59 C
1978	24.4 C	+0.12 C
1979	24.4 C	+0.18 C
1980	24.8 C	+0.50 C
1981	24.5 C	+0.20 C
1982	24.4 C	+0.18 C
1983	23.0 C	-1.25 C
1984	22.9 C	-1.41 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

1953 to 1985

Yearly extremes at Choix (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	47.8 C (118.0 F)	1958	43.9 C (111.0 F)	33
Coldest night (TNn)	-3.3 C (26.1 F)	1964	0.6 C (33.1 F)	33
Wettest day (Rx1day)	150.6 mm (5.9 in)	1968	69.9 mm (2.8 in)	33
Wettest five days (Rx5day)	184.1 mm (7.2 in)	1966	114.3 mm (4.5 in)	33
Longest dry spell (CDD)	310 days	1971	92 days	33

Hottest day (TXx)

The hottest day of the year at Choix (Smn), 1953 to 1985. The record is 47.8 C (118.0 F) in 1958, marked on the chart; the median year is 43.9 C (111.0 F).

Hottest day (TXx) at Choix (Smn) by year
Year	Hottest day (TXx)
1953	43.9 C (111.0 F)
1954	46.7 C (116.1 F)
1955	45.6 C (114.1 F)
1956	43.9 C (111.0 F)
1957	47.2 C (117.0 F)
1958	47.8 C (118.0 F)
1959	45.6 C (114.1 F)
1960	43.9 C (111.0 F)
1961	46.1 C (115.0 F)
1962	45.0 C (113.0 F)
1963	45.6 C (114.1 F)
1964	42.8 C (109.0 F)
1965	43.9 C (111.0 F)
1966	45.6 C (114.1 F)
1967	43.3 C (109.9 F)
1968	45.0 C (113.0 F)
1969	45.0 C (113.0 F)
1970	43.9 C (111.0 F)
1971	44.4 C (111.9 F)
1972	44.4 C (111.9 F)
1973	43.9 C (111.0 F)
1974	43.9 C (111.0 F)
1975	42.8 C (109.0 F)
1976	45.0 C (113.0 F)
1977	45.0 C (113.0 F)
1978	42.8 C (109.0 F)
1979	43.9 C (111.0 F)
1980	43.9 C (111.0 F)
1981	42.8 C (109.0 F)
1982	43.9 C (111.0 F)
1983	42.8 C (109.0 F)
1984	42.2 C (108.0 F)
1985	42.8 C (109.0 F)

Coldest night (TNn)

The coldest night of the year at Choix (Smn), 1953 to 1985. The record is -3.3 C (26.1 F) in 1964, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Choix (Smn) by year
Year	Coldest night (TNn)
1953	0.6 C (33.1 F)
1954	1.1 C (34.0 F)
1955	1.7 C (35.1 F)
1956	-1.7 C (28.9 F)
1957	1.7 C (35.1 F)
1958	1.1 C (34.0 F)
1959	1.1 C (34.0 F)
1960	-1.1 C (30.0 F)
1961	0.0 C (32.0 F)
1962	0.0 C (32.0 F)
1963	0.6 C (33.1 F)
1964	-3.3 C (26.1 F)
1965	0.0 C (32.0 F)
1966	0.0 C (32.0 F)
1967	0.0 C (32.0 F)
1968	0.6 C (33.1 F)
1969	0.0 C (32.0 F)
1970	0.0 C (32.0 F)
1971	0.0 C (32.0 F)
1972	1.7 C (35.1 F)
1973	0.0 C (32.0 F)
1974	1.7 C (35.1 F)
1975	0.0 C (32.0 F)
1976	0.6 C (33.1 F)
1977	3.9 C (39.0 F)
1978	1.7 C (35.1 F)
1979	1.7 C (35.1 F)
1980	3.9 C (39.0 F)
1981	5.0 C (41.0 F)
1982	2.8 C (37.0 F)
1983	3.9 C (39.0 F)
1984	2.8 C (37.0 F)
1985	2.8 C (37.0 F)

Wettest day (Rx1day)

The wettest day of the year at Choix (Smn), 1953 to 1985. The record is 150.6 mm (5.9 in) in 1968, marked on the chart; the median year is 69.9 mm (2.8 in).

Wettest day (Rx1day) at Choix (Smn) by year
Year	Wettest day (Rx1day)
1953	65.3 mm (2.6 in)
1954	53.8 mm (2.1 in)
1955	95.0 mm (3.7 in)
1956	55.9 mm (2.2 in)
1957	59.9 mm (2.4 in)
1958	110.0 mm (4.3 in)
1959	94.7 mm (3.7 in)
1960	57.2 mm (2.3 in)
1961	113.3 mm (4.5 in)
1962	53.8 mm (2.1 in)
1963	47.2 mm (1.9 in)
1964	49.3 mm (1.9 in)
1965	45.7 mm (1.8 in)
1966	112.5 mm (4.4 in)
1967	72.4 mm (2.9 in)
1968	150.6 mm (5.9 in)
1969	71.9 mm (2.8 in)
1970	114.3 mm (4.5 in)
1971	4.8 mm (0.19 in)
1972	69.9 mm (2.8 in)
1973	36.3 mm (1.4 in)
1974	71.9 mm (2.8 in)
1975	40.9 mm (1.6 in)
1976	102.9 mm (4.1 in)
1977	39.9 mm (1.6 in)
1978	48.3 mm (1.9 in)
1979	75.9 mm (3.0 in)
1980	79.8 mm (3.1 in)
1981	57.9 mm (2.3 in)
1982	77.0 mm (3.0 in)
1983	69.9 mm (2.8 in)
1984	74.9 mm (2.9 in)
1985	111.8 mm (4.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Choix (Smn), 1953 to 1985. The record is 184.1 mm (7.2 in) in 1966, marked on the chart; the median year is 114.3 mm (4.5 in).

Wettest five days (Rx5day) at Choix (Smn) by year
Year	Wettest five days (Rx5day)
1953	114.9 mm (4.5 in)
1954	137.4 mm (5.4 in)
1955	138.7 mm (5.5 in)
1956	81.3 mm (3.2 in)
1957	85.6 mm (3.4 in)
1958	123.2 mm (4.9 in)
1959	123.2 mm (4.9 in)
1960	79.2 mm (3.1 in)
1961	162.1 mm (6.4 in)
1962	96.5 mm (3.8 in)
1963	101.3 mm (4.0 in)
1964	74.2 mm (2.9 in)
1965	92.2 mm (3.6 in)
1966	184.1 mm (7.2 in)
1967	97.8 mm (3.9 in)
1968	158.5 mm (6.2 in)
1969	136.1 mm (5.4 in)
1970	178.6 mm (7.0 in)
1971	4.8 mm (0.19 in)
1972	101.4 mm (4.0 in)
1973	66.1 mm (2.6 in)
1974	115.6 mm (4.6 in)
1975	66.6 mm (2.6 in)
1976	142.3 mm (5.6 in)
1977	85.9 mm (3.4 in)
1978	108.2 mm (4.3 in)
1979	114.3 mm (4.5 in)
1980	153.8 mm (6.1 in)
1981	89.2 mm (3.5 in)
1982	111.8 mm (4.4 in)
1983	116.3 mm (4.6 in)
1984	148.9 mm (5.9 in)
1985	147.1 mm (5.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Choix (Smn), 1953 to 1985. The record is 310 days in 1971, marked on the chart; the median year is 92 days.

Longest dry spell (CDD) at Choix (Smn) by year
Year	Longest dry spell (CDD)
1953	122 days
1954	143 days
1955	71 days
1956	81 days
1957	58 days
1958	37 days
1959	97 days
1960	105 days
1961	70 days
1962	94 days
1963	78 days
1964	92 days
1965	109 days
1966	93 days
1967	124 days
1968	43 days
1969	79 days
1970	82 days
1971	310 days
1972	144 days
1973	96 days
1974	102 days
1975	146 days
1976	68 days
1977	85 days
1978	61 days
1979	102 days
1980	102 days
1981	85 days
1982	167 days
1983	51 days
1984	66 days
1985	54 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

32 years, 1953 to 1984

A day with at least 67.3 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 156.0 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Choix (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	67.3 mm (2.6 in)
5 years	93.8 mm (3.7 in)
10 years	110.1 mm (4.3 in)
25 years	129.6 mm (5.1 in)
50 years	143.2 mm (5.6 in)	Longer than the 32 years of record
100 years	156.0 mm (6.1 in)	Longer than the 32 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, 32 years of values from 1953 to 1984.

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: 150.6 mm (5.9 in) in 1968; 114.3 mm (4.5 in) in 1970; 113.3 mm (4.5 in) in 1961.

Download the Data

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