Chilchotla (Cfe) Weather Records (MXN00021025)

Record envelope, standing records and threshold days for Chilchotla (Cfe) (MXN00021025), Mexico, with 34 years of record.

Key Facts for Chilchotla (Cfe)

Chilchotla (Cfe) (MXN00021025) is a weather station in Mexico at 19.25 latitude and -97.17 longitude, 2,194 m (7,198 ft) above sea level.
The station reports from 1964 to 1997, 34 years of record.
1,464 records set at Chilchotla (Cfe) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Chilchotla (Cfe) tied a daily record precipitation of 14.0 mm (0.6 in) on 28 May 1997.

About the Station

Location: Mexico, 19.25 latitude, -97.17 longitude.
Elevation: 2,194 m (7,198 ft).
Period of record: 1964 to 1997, 34 years.
Eligible elements: 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 Chilchotla (Cfe). 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 Chilchotla (Cfe), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	27.8 C (82.0 F)	-1.1 C (30.0 F)	n/a	n/a
Feb	28.9 C (84.0 F)	0.0 C (32.0 F)	n/a	n/a
Mar	32.8 C (91.0 F)	0.0 C (32.0 F)	n/a	n/a
Apr	30.6 C (87.1 F)	0.6 C (33.1 F)	n/a	n/a
May	31.7 C (89.1 F)	0.0 C (32.0 F)	n/a	n/a
Jun	30.6 C (87.1 F)	2.8 C (37.0 F)	n/a	n/a
Jul	27.8 C (82.0 F)	0.6 C (33.1 F)	n/a	n/a
Aug	25.6 C (78.1 F)	3.9 C (39.0 F)	n/a	n/a
Sep	28.9 C (84.0 F)	0.6 C (33.1 F)	n/a	n/a
Oct	28.9 C (84.0 F)	0.6 C (33.1 F)	n/a	n/a
Nov	27.8 C (82.0 F)	0.6 C (33.1 F)	n/a	n/a
Dec	28.9 C (84.0 F)	0.0 C (32.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chilchotla (Cfe) still stand. 1980 holds the most, with 123.

Standing records at Chilchotla (Cfe) by the year they were set
Year set	Standing records
1979	88
1980	123
1981	120
1982	96
1983	111
1984	86
1985	39
1986	88
1987	90
1988	55
1989	70
1990	57
1991	101
1992	77
1993	62
1994	57
1995	91
1996	50
1997	3

Wettest Day of Each Month

Jun: 159.8 mm (6.3 in)

The wettest day on record for each calendar month at Chilchotla (Cfe). The most was 159.8 mm (6.3 in) on 27 June 1975.

Record daily precipitation for each month at Chilchotla (Cfe)
Month	Record daily precipitation (mm)	Date
Jan	39.9 mm (1.6 in)	23 January 1967
Feb	30.0 mm (1.2 in)	21 February 1966
Mar	25.9 mm (1.0 in)	23 March 1966
Apr	78.0 mm (3.1 in)	8 April 1968
May	46.7 mm (1.8 in)	19 May 1985
Jun	159.8 mm (6.3 in)	27 June 1975
Jul	144.8 mm (5.7 in)	14 July 1981
Aug	97.0 mm (3.8 in)	9 August 1996
Sep	109.0 mm (4.3 in)	9 September 1975
Oct	73.9 mm (2.9 in)	13 October 1969
Nov	78.0 mm (3.1 in)	18 November 1968
Dec	74.9 mm (2.9 in)	3 December 1968

Period of Record Coverage

1979 to 1997

19 years of record at Chilchotla (Cfe), 1979 to 1997. 3 years have data for under 90 percent of days and are left out of rankings: 1979, 1996, 1997.

Days with data per year at Chilchotla (Cfe)
Year	Days with data	Share of year	Complete
1979	249	68%	No
1980	334	91%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	363	99%	Yes
1984	365	100%	Yes
1985	331	91%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	366	100%	Yes
1989	361	99%	Yes
1990	365	100%	Yes
1991	363	99%	Yes
1992	364	99%	Yes
1993	364	100%	Yes
1994	364	100%	Yes
1995	365	100%	Yes
1996	274	75%	No
1997	61	17%	No

Latest Records

Latest records at Chilchotla (Cfe)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 May 1997	Chilchotla (Cfe), MX	daily rain (Tie)	14.0 mm (0.6 in)	tie	22 years	2 of 100 (Routine)
18 May 1997	Chilchotla (Cfe), MX	daily rain	30.5 mm (1.2 in)	14.8 mm (0.6 in)	12 years	26 of 100 (Routine)
16 May 1997	Chilchotla (Cfe), MX	daily rain	20.8 mm (0.8 in)	5.8 mm (0.23 in)	20 years	17 of 100 (Routine)
17 August 1996	Chilchotla (Cfe), MX	daily rain	34.5 mm (1.4 in)	6.6 mm (0.26 in)	7 years	10 of 100 (Routine)
9 August 1996	Chilchotla (Cfe), MX	monthly rain	97.0 mm (3.8 in)	12.2 mm (0.5 in)	17 years	27 of 100 (Routine)
29 July 1996	Chilchotla (Cfe), MX	daily rain	52.6 mm (2.1 in)	14.8 mm (0.6 in)	30 years	21 of 100 (Routine)
9 May 1996	Chilchotla (Cfe), MX	daily rain	24.9 mm (1.0 in)	6.1 mm (0.24 in)	23 years	17 of 100 (Routine)
19 April 1996	Chilchotla (Cfe), MX	daily rain	9.4 mm (0.37 in)	1.5 mm (0.06 in)	23 years	10 of 100 (Routine)
22 March 1996	Chilchotla (Cfe), MX	daily rain	15.2 mm (0.6 in)	10.1 mm (0.4 in)	29 years	20 of 100 (Routine)
16 February 1996	Chilchotla (Cfe), MX	daily rain	8.4 mm (0.33 in)	3.6 mm (0.14 in)	22 years	14 of 100 (Routine)
30 December 1995	Chilchotla (Cfe), MX	daily rain	19.3 mm (0.8 in)	12.4 mm (0.5 in)	1 year	15 of 100 (Routine)
5 November 1995	Chilchotla (Cfe), MX	daily rain	28.4 mm (1.1 in)	8.6 mm (0.34 in)	29 years	18 of 100 (Routine)
27 October 1995	Chilchotla (Cfe), MX	daily rain	26.2 mm (1.0 in)	1.3 mm (0.05 in)	29 years	12 of 100 (Routine)
19 October 1995	Chilchotla (Cfe), MX	daily rain	71.9 mm (2.8 in)	47.0 mm (1.9 in)	29 years	51 of 100 (Notable)
5 September 1995	Chilchotla (Cfe), MX	daily rain	32.8 mm (1.3 in)	4.9 mm (0.19 in)	24 years	13 of 100 (Routine)
19 August 1995	Chilchotla (Cfe), MX	daily rain	54.9 mm (2.2 in)	18.1 mm (0.7 in)	4 years	18 of 100 (Routine)
6 August 1995	Chilchotla (Cfe), MX	daily rain	59.9 mm (2.4 in)	33.5 mm (1.3 in)	14 years	33 of 100 (Routine)
25 May 1995	Chilchotla (Cfe), MX	daily rain	27.9 mm (1.1 in)	12.2 mm (0.5 in)	13 years	24 of 100 (Routine)
18 August 1994	Chilchotla (Cfe), MX	daily rain	65.0 mm (2.6 in)	45.2 mm (1.8 in)	28 years	46 of 100 (Notable)
7 March 1994	Chilchotla (Cfe), MX	daily rain	6.4 mm (0.25 in)	1.3 mm (0.05 in)	0 years	5 of 100 (Routine)

Climate Trend

14 complete years, 1981 to 1995

One stripe for each of 14 complete years at Chilchotla (Cfe), 1981 to 1995. Blue stripes are years cooler than the station's own mean of 14.5 C (58.0 F); red stripes are warmer. The coolest year was 1981, at 13.8 C (56.8 F), and the warmest was 1995, at 15.7 C (60.3 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Chilchotla (Cfe) as warming stripes, 1981 to 1995
Year	Annual mean temperature	Difference from the station mean
1981	13.8 C	-0.68 C
1982	14.2 C	-0.25 C
1983	14.6 C	+0.10 C
1984	14.1 C	-0.37 C
1986	14.0 C	-0.43 C
1987	14.2 C	-0.31 C
1988	14.3 C	-0.20 C
1989	14.4 C	-0.09 C
1990	14.4 C	-0.02 C
1991	15.0 C	+0.58 C
1992	14.3 C	-0.16 C
1993	14.6 C	+0.18 C
1994	14.9 C	+0.43 C
1995	15.7 C	+1.26 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

1964 to 1997

Yearly extremes at Chilchotla (Cfe): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.8 C (91.0 F)	1991	30.0 C (86.0 F)	19
Coldest night (TNn)	-1.1 C (30.0 F)	1993	0.6 C (33.1 F)	19
Wettest day (Rx1day)	159.8 mm (6.3 in)	1975	71.9 mm (2.8 in)	34
Wettest five days (Rx5day)	260.0 mm (10.2 in)	1981	132.0 mm (5.2 in)	34
Longest dry spell (CDD)	54 days	1977	23 days	34

Hottest day (TXx)

The hottest day of the year at Chilchotla (Cfe), 1964 to 1997. The record is 32.8 C (91.0 F) in 1991, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at Chilchotla (Cfe) by year
Year	Hottest day (TXx)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	28.9 C (84.0 F)
1980	28.9 C (84.0 F)
1981	27.8 C (82.0 F)
1982	30.0 C (86.0 F)
1983	30.6 C (87.1 F)
1984	30.6 C (87.1 F)
1985	27.8 C (82.0 F)
1986	28.9 C (84.0 F)
1987	31.7 C (89.1 F)
1988	30.6 C (87.1 F)
1989	30.6 C (87.1 F)
1990	30.6 C (87.1 F)
1991	32.8 C (91.0 F)
1992	28.9 C (84.0 F)
1993	30.0 C (86.0 F)
1994	32.8 C (91.0 F)
1995	31.7 C (89.1 F)
1996	30.0 C (86.0 F)
1997	27.8 C (82.0 F)

Coldest night (TNn)

The coldest night of the year at Chilchotla (Cfe), 1964 to 1997. The record is -1.1 C (30.0 F) in 1993, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Chilchotla (Cfe) by year
Year	Coldest night (TNn)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	0.6 C (33.1 F)
1980	0.6 C (33.1 F)
1981	0.6 C (33.1 F)
1982	0.6 C (33.1 F)
1983	0.0 C (32.0 F)
1984	0.6 C (33.1 F)
1985	0.0 C (32.0 F)
1986	0.6 C (33.1 F)
1987	0.6 C (33.1 F)
1988	0.0 C (32.0 F)
1989	0.6 C (33.1 F)
1990	0.0 C (32.0 F)
1991	0.6 C (33.1 F)
1992	0.6 C (33.1 F)
1993	-1.1 C (30.0 F)
1994	0.6 C (33.1 F)
1995	0.6 C (33.1 F)
1996	0.6 C (33.1 F)
1997	5.0 C (41.0 F)

Wettest day (Rx1day)

The wettest day of the year at Chilchotla (Cfe), 1964 to 1997. The record is 159.8 mm (6.3 in) in 1975, marked on the chart; the median year is 71.9 mm (2.8 in).

Wettest day (Rx1day) at Chilchotla (Cfe) by year
Year	Wettest day (Rx1day)
1964	18.8 mm (0.7 in)
1965	79.8 mm (3.1 in)
1966	54.9 mm (2.2 in)
1967	52.8 mm (2.1 in)
1968	78.0 mm (3.1 in)
1969	121.9 mm (4.8 in)
1970	63.0 mm (2.5 in)
1971	49.8 mm (2.0 in)
1972	101.9 mm (4.0 in)
1973	75.9 mm (3.0 in)
1974	106.9 mm (4.2 in)
1975	159.8 mm (6.3 in)
1976	83.8 mm (3.3 in)
1977	11.9 mm (0.5 in)
1978	42.2 mm (1.7 in)
1979	84.8 mm (3.3 in)
1980	95.8 mm (3.8 in)
1981	144.8 mm (5.7 in)
1982	61.0 mm (2.4 in)
1983	45.0 mm (1.8 in)
1984	54.9 mm (2.2 in)
1985	104.9 mm (4.1 in)
1986	59.9 mm (2.4 in)
1987	63.8 mm (2.5 in)
1988	39.9 mm (1.6 in)
1989	59.9 mm (2.4 in)
1990	71.9 mm (2.8 in)
1991	102.9 mm (4.1 in)
1992	99.8 mm (3.9 in)
1993	108.0 mm (4.3 in)
1994	65.0 mm (2.6 in)
1995	71.9 mm (2.8 in)
1996	97.0 mm (3.8 in)
1997	30.5 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chilchotla (Cfe), 1964 to 1997. The record is 260.0 mm (10.2 in) in 1981, marked on the chart; the median year is 132.0 mm (5.2 in).

Wettest five days (Rx5day) at Chilchotla (Cfe) by year
Year	Wettest five days (Rx5day)
1964	44.5 mm (1.8 in)
1965	251.6 mm (9.9 in)
1966	164.9 mm (6.5 in)
1967	124.5 mm (4.9 in)
1968	245.4 mm (9.7 in)
1969	255.3 mm (10.1 in)
1970	175.4 mm (6.9 in)
1971	122.2 mm (4.8 in)
1972	225.4 mm (8.9 in)
1973	199.5 mm (7.9 in)
1974	179.3 mm (7.1 in)
1975	224.6 mm (8.8 in)
1976	246.1 mm (9.7 in)
1977	18.5 mm (0.7 in)
1978	87.2 mm (3.4 in)
1979	124.8 mm (4.9 in)
1980	202.0 mm (8.0 in)
1981	260.0 mm (10.2 in)
1982	90.3 mm (3.6 in)
1983	163.2 mm (6.4 in)
1984	202.2 mm (8.0 in)
1985	115.1 mm (4.5 in)
1986	136.2 mm (5.4 in)
1987	109.5 mm (4.3 in)
1988	107.0 mm (4.2 in)
1989	120.9 mm (4.8 in)
1990	91.5 mm (3.6 in)
1991	144.8 mm (5.7 in)
1992	127.6 mm (5.0 in)
1993	216.9 mm (8.5 in)
1994	88.7 mm (3.5 in)
1995	111.2 mm (4.4 in)
1996	127.8 mm (5.0 in)
1997	51.3 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chilchotla (Cfe), 1964 to 1997. The record is 54 days in 1977, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Chilchotla (Cfe) by year
Year	Longest dry spell (CDD)
1964	22 days
1965	25 days
1966	18 days
1967	20 days
1968	18 days
1969	20 days
1970	46 days
1971	33 days
1972	28 days
1973	32 days
1974	22 days
1975	46 days
1976	39 days
1977	54 days
1978	32 days
1979	21 days
1980	18 days
1981	21 days
1982	20 days
1983	38 days
1984	23 days
1985	15 days
1986	40 days
1987	23 days
1988	25 days
1989	25 days
1990	21 days
1991	32 days
1992	15 days
1993	44 days
1994	15 days
1995	20 days
1996	21 days
1997	12 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, 1965 to 1995

A day with at least 73.8 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 171.2 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Chilchotla (Cfe): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	73.8 mm (2.9 in)
5 years	102.6 mm (4.0 in)
10 years	120.5 mm (4.7 in)
25 years	141.9 mm (5.6 in)
50 years	156.9 mm (6.2 in)	Longer than the 31 years of record
100 years	171.2 mm (6.7 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 1965 to 1995.

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: 159.8 mm (6.3 in) in 1975; 144.8 mm (5.7 in) in 1981; 121.9 mm (4.8 in) in 1969.

Download the Data

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