Chanchichimila Weather Records (MXN00031008)

Record envelope, standing records and threshold days for Chanchichimila (MXN00031008), Mexico, with 56 years of record.

Key Facts for Chanchichimila

Chanchichimila (MXN00031008) is a weather station in Mexico at 20.38 latitude and -88.47 longitude, 26 m (85 ft) above sea level.
The station reports from 1952 to 2007, 56 years of record.
1,464 records set at Chanchichimila still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Chanchichimila tied a daily record high minimum temperature of 20.6 C (69.1 F) on 28 November 2007.

About the Station

Location: Mexico, 20.38 latitude, -88.47 longitude.
Elevation: 26 m (85 ft).
Period of record: 1952 to 2007, 56 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 Chanchichimila. 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 Chanchichimila, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.9 C (102.0 F)	1.7 C (35.1 F)	n/a	n/a
Feb	38.3 C (100.9 F)	5.0 C (41.0 F)	n/a	n/a
Mar	40.0 C (104.0 F)	7.8 C (46.0 F)	n/a	n/a
Apr	40.6 C (105.1 F)	7.8 C (46.0 F)	n/a	n/a
May	42.2 C (108.0 F)	10.6 C (51.1 F)	n/a	n/a
Jun	40.0 C (104.0 F)	16.7 C (62.1 F)	n/a	n/a
Jul	38.9 C (102.0 F)	15.0 C (59.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	16.7 C (62.1 F)	n/a	n/a
Sep	38.3 C (100.9 F)	16.7 C (62.1 F)	n/a	n/a
Oct	39.4 C (102.9 F)	10.6 C (51.1 F)	n/a	n/a
Nov	36.7 C (98.1 F)	5.0 C (41.0 F)	n/a	n/a
Dec	37.8 C (100.0 F)	6.1 C (43.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chanchichimila still stand. 1959 holds the most, with 66.

Standing records at Chanchichimila by the year they were set
Year set	Standing records
1952	15
1953	61
1954	50
1955	39
1956	43
1957	31
1958	65
1959	66
1960	45
1961	41
1962	36
1963	50
1964	51
1965	25
1966	29
1967	37
1968	35
1969	44
1970	42
1971	18
1972	24
1973	27
1974	17
1975	37
1976	7
1977	13
1978	13
1979	6
1980	25
1981	7
1982	7
1983	14
1984	31
1985	31
1986	17
1987	30
1988	4
1989	9
1990	18
1991	15
1992	5
1993	15
1994	19
1995	22
1996	26
1997	15
1998	22
1999	19
2000	19
2001	32
2002	18
2003	19
2004	10
2005	7
2006	20
2007	21

All-Time Record Progression

5 new records

5 all-time records were set at Chanchichimila between 26 April 1984 and 20 January 2005. Each dot is a new record.

When Chanchichimila set new all-time records
Date	Kind	Detail
1984-04-26	Record high minimum temperature	Record high minimum temperature 27.8 C (82.0 F)
1991-05-02	Record high maximum temperature	Record high maximum temperature 41.7 C (107.1 F)
1991-05-08	Record high maximum temperature	Record high maximum temperature 42.2 C (108.0 F)
2003-01-09	Record low minimum temperature	Record low minimum temperature 2.8 C (37.0 F)
2005-01-20	Record low minimum temperature	Record low minimum temperature 1.7 C (35.1 F)

Wettest Day of Each Month

May: 163.3 mm (6.4 in)

The wettest day on record for each calendar month at Chanchichimila. The most was 163.3 mm (6.4 in) on 13 May 1959.

Record daily precipitation for each month at Chanchichimila
Month	Record daily precipitation (mm)	Date
Jan	85.9 mm (3.4 in)	24 January 1993
Feb	81.0 mm (3.2 in)	3 February 1982
Mar	133.9 mm (5.3 in)	19 March 1990
Apr	104.9 mm (4.1 in)	13 April 1980
May	163.3 mm (6.4 in)	13 May 1959
Jun	130.8 mm (5.1 in)	30 June 1973
Jul	87.9 mm (3.5 in)	20 July 2002
Aug	125.0 mm (4.9 in)	20 August 1996
Sep	137.7 mm (5.4 in)	16 September 1955
Oct	121.9 mm (4.8 in)	2 October 1976
Nov	140.0 mm (5.5 in)	26 November 1980
Dec	156.0 mm (6.1 in)	4 December 2006

Period of Record Coverage

1952 to 2007

56 years of record at Chanchichimila, 1952 to 2007. 6 years have data for under 90 percent of days and are left out of rankings: 1952, 1969, 1978, 1982, 1991, 2005.

Days with data per year at Chanchichimila
Year	Days with data	Share of year	Complete
1952	153	42%	No
1953	365	100%	Yes
1954	364	100%	Yes
1955	360	99%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	365	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	276	76%	No
1970	365	100%	Yes
1971	365	100%	Yes
1972	335	92%	Yes
1973	365	100%	Yes
1974	334	92%	Yes
1975	364	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	302	83%	No
1979	335	92%	Yes
1980	366	100%	Yes
1981	335	92%	Yes
1982	304	83%	No
1983	337	92%	Yes
1984	335	92%	Yes
1985	364	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	335	92%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	304	83%	No
1992	364	99%	Yes
1993	365	100%	Yes
1994	363	99%	Yes
1995	364	100%	Yes
1996	364	99%	Yes
1997	363	99%	Yes
1998	363	99%	Yes
1999	364	100%	Yes
2000	365	100%	Yes
2001	359	98%	Yes
2002	344	94%	Yes
2003	352	96%	Yes
2004	364	99%	Yes
2005	326	89%	No
2006	360	99%	Yes
2007	329	90%	Yes

Latest Records

Latest records at Chanchichimila
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 November 2007	Chanchichimila, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	30 years	3 of 100 (Routine)
15 November 2007	Chanchichimila, MX	daily low max	25.0 C (77.0 F)	0.6 C (1.1 F)	44 years	20 of 100 (Routine)
11 November 2007	Chanchichimila, MX	daily low max	23.3 C (73.9 F)	1.1 C (2.0 F)	53 years	25 of 100 (Routine)
26 October 2007	Chanchichimila, MX	daily low max	25.6 C (78.1 F)	1.1 C (2.0 F)	8 years	12 of 100 (Routine)
25 October 2007	Chanchichimila, MX	daily low max	25.0 C (77.0 F)	1.7 C (3.1 F)	8 years	15 of 100 (Routine)
24 October 2007	Chanchichimila, MX	daily low max	23.3 C (73.9 F)	2.3 C (4.1 F)	0 years	15 of 100 (Routine)
15 October 2007	Chanchichimila, MX	daily high min (Tie)	22.2 C (72.0 F)	tie	48 years	4 of 100 (Routine)
9 October 2007	Chanchichimila, MX	daily low max (Tie)	26.7 C (80.1 F)	tie	54 years	5 of 100 (Routine)
8 October 2007	Chanchichimila, MX	daily low max	23.3 C (73.9 F)	1.7 C (3.1 F)	54 years	29 of 100 (Routine)
3 October 2007	Chanchichimila, MX	daily low min	19.4 C (66.9 F)	0.6 C (1.1 F)	52 years	22 of 100 (Routine)
3 October 2007	Chanchichimila, MX	daily low max	25.0 C (77.0 F)	2.8 C (5.0 F)	8 years	20 of 100 (Routine)
20 September 2007	Chanchichimila, MX	daily low min (Tie)	20.0 C (68.0 F)	tie	48 years	4 of 100 (Routine)
11 September 2007	Chanchichimila, MX	daily low max	30.0 C (86.0 F)	0.6 C (1.1 F)	44 years	21 of 100 (Routine)
10 September 2007	Chanchichimila, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	22 years	2 of 100 (Routine)
5 September 2007	Chanchichimila, MX	daily low min (Tie)	20.0 C (68.0 F)	tie	53 years	5 of 100 (Routine)
3 September 2007	Chanchichimila, MX	daily low max	29.4 C (84.9 F)	1.2 C (2.2 F)	21 years	17 of 100 (Routine)
29 August 2007	Chanchichimila, MX	daily low max	26.7 C (80.1 F)	1.6 C (2.9 F)	4 years	14 of 100 (Routine)
19 August 2007	Chanchichimila, MX	daily low min (Tie)	20.0 C (68.0 F)	tie	40 years	4 of 100 (Routine)
16 August 2007	Chanchichimila, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	44 years	4 of 100 (Routine)
15 August 2007	Chanchichimila, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	50 years	5 of 100 (Routine)

Climate Trend

42 complete years, 1953 to 2006

One stripe for each of 42 complete years at Chanchichimila, 1953 to 2006. Blue stripes are years cooler than the station's own mean of 25.5 C (77.9 F); red stripes are warmer. The coolest year was 2006, at 24.4 C (75.9 F), and the warmest was 1971, at 26.2 C (79.2 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Chanchichimila as warming stripes, 1953 to 2006
Year	Annual mean temperature	Difference from the station mean
1953	25.7 C	+0.26 C
1954	24.9 C	-0.56 C
1955	25.4 C	-0.09 C
1956	25.1 C	-0.42 C
1957	25.5 C	+0.06 C
1958	25.4 C	-0.12 C
1959	25.1 C	-0.42 C
1960	25.0 C	-0.46 C
1961	25.0 C	-0.49 C
1962	24.9 C	-0.58 C
1963	25.0 C	-0.47 C
1964	25.4 C	-0.12 C
1965	25.4 C	-0.04 C
1966	25.3 C	-0.22 C
1967	25.3 C	-0.15 C
1968	25.3 C	-0.22 C
1970	26.0 C	+0.49 C
1971	26.2 C	+0.74 C
1973	26.1 C	+0.65 C
1975	26.2 C	+0.72 C
1976	25.5 C	-0.02 C
1977	25.7 C	+0.20 C
1980	25.8 C	+0.37 C
1985	25.7 C	+0.22 C
1986	25.7 C	+0.18 C
1987	25.8 C	+0.37 C
1989	25.4 C	-0.12 C
1990	25.5 C	+0.01 C
1992	25.6 C	+0.10 C
1993	25.7 C	+0.21 C
1994	26.0 C	+0.50 C
1995	26.1 C	+0.65 C
1996	25.3 C	-0.15 C
1997	25.7 C	+0.23 C
1998	25.6 C	+0.12 C
1999	25.4 C	-0.12 C
2000	25.2 C	-0.30 C
2001	25.9 C	+0.38 C
2002	25.5 C	+0.07 C
2003	25.5 C	+0.01 C
2004	25.2 C	-0.30 C
2006	24.4 C	-1.07 C

The fitted trend in annual mean temperature here over 1953 to 2006 is 0.04 C (-0.03 to 0.12) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.2) 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 Chanchichimila
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.04 C (-0.03 to 0.12) per decade	0.1 F (-0.1 to 0.2) per decade	1953 to 2006	42	Not clearly different from zero
Mean daily maximum	0.04 C (-0.08 to 0.16) per decade	0.1 F (-0.1 to 0.3) per decade	1953 to 2006	42	Not clearly different from zero
Mean daily minimum	0.04 C (-0.04 to 0.12) per decade	0.1 F (-0.1 to 0.2) per decade	1953 to 2006	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

1952 to 2007

Yearly extremes at Chanchichimila: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.2 C (108.0 F)	1991	38.9 C (102.0 F)	56
Coldest night (TNn)	1.7 C (35.1 F)	2005	8.6 C (47.5 F)	56
Wettest day (Rx1day)	163.3 mm (6.4 in)	1959	80.8 mm (3.2 in)	56
Wettest five days (Rx5day)	291.8 mm (11.5 in)	2002	137.5 mm (5.4 in)	56
Longest dry spell (CDD)	83 days	1976	36 days	56

Hottest day (TXx)

The hottest day of the year at Chanchichimila, 1952 to 2007. The record is 42.2 C (108.0 F) in 1991, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Chanchichimila by year
Year	Hottest day (TXx)
1952	35.0 C (95.0 F)
1953	39.4 C (102.9 F)
1954	40.0 C (104.0 F)
1955	39.4 C (102.9 F)
1956	38.9 C (102.0 F)
1957	40.0 C (104.0 F)
1958	38.9 C (102.0 F)
1959	39.4 C (102.9 F)
1960	37.2 C (99.0 F)
1961	38.9 C (102.0 F)
1962	38.3 C (100.9 F)
1963	40.0 C (104.0 F)
1964	40.6 C (105.1 F)
1965	38.9 C (102.0 F)
1966	38.9 C (102.0 F)
1967	39.4 C (102.9 F)
1968	38.9 C (102.0 F)
1969	38.9 C (102.0 F)
1970	37.8 C (100.0 F)
1971	38.9 C (102.0 F)
1972	40.0 C (104.0 F)
1973	38.9 C (102.0 F)
1974	38.9 C (102.0 F)
1975	40.0 C (104.0 F)
1976	37.8 C (100.0 F)
1977	36.7 C (98.1 F)
1978	40.0 C (104.0 F)
1979	37.8 C (100.0 F)
1980	40.0 C (104.0 F)
1981	37.8 C (100.0 F)
1982	37.8 C (100.0 F)
1983	38.9 C (102.0 F)
1984	40.0 C (104.0 F)
1985	37.8 C (100.0 F)
1986	38.9 C (102.0 F)
1987	40.0 C (104.0 F)
1988	37.8 C (100.0 F)
1989	36.7 C (98.1 F)
1990	36.7 C (98.1 F)
1991	42.2 C (108.0 F)
1992	37.8 C (100.0 F)
1993	37.8 C (100.0 F)
1994	38.3 C (100.9 F)
1995	40.0 C (104.0 F)
1996	36.7 C (98.1 F)
1997	37.2 C (99.0 F)
1998	38.9 C (102.0 F)
1999	40.6 C (105.1 F)
2000	40.0 C (104.0 F)
2001	40.6 C (105.1 F)
2002	39.4 C (102.9 F)
2003	39.4 C (102.9 F)
2004	39.4 C (102.9 F)
2005	37.8 C (100.0 F)
2006	40.0 C (104.0 F)
2007	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Chanchichimila, 1952 to 2007. The record is 1.7 C (35.1 F) in 2005, marked on the chart; the median year is 8.6 C (47.5 F).

Coldest night (TNn) at Chanchichimila by year
Year	Coldest night (TNn)
1952	6.7 C (44.1 F)
1953	5.6 C (42.1 F)
1954	6.7 C (44.1 F)
1955	7.8 C (46.0 F)
1956	6.1 C (43.0 F)
1957	7.2 C (45.0 F)
1958	5.0 C (41.0 F)
1959	6.7 C (44.1 F)
1960	6.1 C (43.0 F)
1961	7.8 C (46.0 F)
1962	5.6 C (42.1 F)
1963	6.7 C (44.1 F)
1964	6.7 C (44.1 F)
1965	8.9 C (48.0 F)
1966	7.8 C (46.0 F)
1967	10.0 C (50.0 F)
1968	7.8 C (46.0 F)
1969	10.0 C (50.0 F)
1970	10.0 C (50.0 F)
1971	11.7 C (53.1 F)
1972	10.6 C (51.1 F)
1973	6.1 C (43.0 F)
1974	7.8 C (46.0 F)
1975	8.9 C (48.0 F)
1976	6.7 C (44.1 F)
1977	8.9 C (48.0 F)
1978	8.9 C (48.0 F)
1979	10.0 C (50.0 F)
1980	7.8 C (46.0 F)
1981	6.7 C (44.1 F)
1982	10.6 C (51.1 F)
1983	10.0 C (50.0 F)
1984	10.0 C (50.0 F)
1985	6.7 C (44.1 F)
1986	6.7 C (44.1 F)
1987	10.0 C (50.0 F)
1988	10.0 C (50.0 F)
1989	7.8 C (46.0 F)
1990	10.0 C (50.0 F)
1991	10.0 C (50.0 F)
1992	10.0 C (50.0 F)
1993	10.0 C (50.0 F)
1994	10.0 C (50.0 F)
1995	10.0 C (50.0 F)
1996	6.7 C (44.1 F)
1997	10.0 C (50.0 F)
1998	10.0 C (50.0 F)
1999	10.0 C (50.0 F)
2000	10.0 C (50.0 F)
2001	9.4 C (48.9 F)
2002	10.0 C (50.0 F)
2003	2.8 C (37.0 F)
2004	9.4 C (48.9 F)
2005	1.7 C (35.1 F)
2006	3.3 C (37.9 F)
2007	8.3 C (46.9 F)

Wettest day (Rx1day)

The wettest day of the year at Chanchichimila, 1952 to 2007. The record is 163.3 mm (6.4 in) in 1959, marked on the chart; the median year is 80.8 mm (3.2 in).

Wettest day (Rx1day) at Chanchichimila by year
Year	Wettest day (Rx1day)
1952	71.9 mm (2.8 in)
1953	63.0 mm (2.5 in)
1954	113.5 mm (4.5 in)
1955	137.7 mm (5.4 in)
1956	64.3 mm (2.5 in)
1957	77.0 mm (3.0 in)
1958	72.1 mm (2.8 in)
1959	163.3 mm (6.4 in)
1960	89.7 mm (3.5 in)
1961	67.3 mm (2.6 in)
1962	74.9 mm (2.9 in)
1963	99.8 mm (3.9 in)
1964	65.8 mm (2.6 in)
1965	70.9 mm (2.8 in)
1966	79.8 mm (3.1 in)
1967	80.8 mm (3.2 in)
1968	85.9 mm (3.4 in)
1969	132.8 mm (5.2 in)
1970	71.9 mm (2.8 in)
1971	59.9 mm (2.4 in)
1972	146.8 mm (5.8 in)
1973	130.8 mm (5.1 in)
1974	66.8 mm (2.6 in)
1975	49.8 mm (2.0 in)
1976	121.9 mm (4.8 in)
1977	59.9 mm (2.4 in)
1978	82.8 mm (3.3 in)
1979	117.3 mm (4.6 in)
1980	140.0 mm (5.5 in)
1981	50.3 mm (2.0 in)
1982	81.0 mm (3.2 in)
1983	82.0 mm (3.2 in)
1984	80.5 mm (3.2 in)
1985	69.9 mm (2.8 in)
1986	80.8 mm (3.2 in)
1987	54.9 mm (2.2 in)
1988	97.8 mm (3.9 in)
1989	72.9 mm (2.9 in)
1990	133.9 mm (5.3 in)
1991	111.8 mm (4.4 in)
1992	73.9 mm (2.9 in)
1993	97.3 mm (3.8 in)
1994	42.9 mm (1.7 in)
1995	87.9 mm (3.5 in)
1996	125.0 mm (4.9 in)
1997	95.0 mm (3.7 in)
1998	100.1 mm (3.9 in)
1999	79.8 mm (3.1 in)
2000	81.8 mm (3.2 in)
2001	34.8 mm (1.4 in)
2002	100.1 mm (3.9 in)
2003	59.9 mm (2.4 in)
2004	62.0 mm (2.4 in)
2005	86.9 mm (3.4 in)
2006	156.0 mm (6.1 in)
2007	73.9 mm (2.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chanchichimila, 1952 to 2007. The record is 291.8 mm (11.5 in) in 2002, marked on the chart; the median year is 137.5 mm (5.4 in).

Wettest five days (Rx5day) at Chanchichimila by year
Year	Wettest five days (Rx5day)
1952	168.4 mm (6.6 in)
1953	136.7 mm (5.4 in)
1954	161.3 mm (6.4 in)
1955	201.5 mm (7.9 in)
1956	113.6 mm (4.5 in)
1957	135.2 mm (5.3 in)
1958	144.3 mm (5.7 in)
1959	192.8 mm (7.6 in)
1960	110.5 mm (4.4 in)
1961	142.8 mm (5.6 in)
1962	92.0 mm (3.6 in)
1963	153.0 mm (6.0 in)
1964	82.0 mm (3.2 in)
1965	109.5 mm (4.3 in)
1966	119.6 mm (4.7 in)
1967	134.2 mm (5.3 in)
1968	104.9 mm (4.1 in)
1969	205.5 mm (8.1 in)
1970	195.3 mm (7.7 in)
1971	154.4 mm (6.1 in)
1972	156.7 mm (6.2 in)
1973	179.0 mm (7.0 in)
1974	114.1 mm (4.5 in)
1975	116.3 mm (4.6 in)
1976	148.1 mm (5.8 in)
1977	122.9 mm (4.8 in)
1978	125.2 mm (4.9 in)
1979	124.2 mm (4.9 in)
1980	145.5 mm (5.7 in)
1981	81.6 mm (3.2 in)
1982	105.7 mm (4.2 in)
1983	120.3 mm (4.7 in)
1984	120.3 mm (4.7 in)
1985	143.5 mm (5.6 in)
1986	110.0 mm (4.3 in)
1987	105.4 mm (4.1 in)
1988	195.4 mm (7.7 in)
1989	97.6 mm (3.8 in)
1990	151.7 mm (6.0 in)
1991	114.6 mm (4.5 in)
1992	189.4 mm (7.5 in)
1993	167.1 mm (6.6 in)
1994	122.7 mm (4.8 in)
1995	115.6 mm (4.6 in)
1996	165.7 mm (6.5 in)
1997	141.3 mm (5.6 in)
1998	231.7 mm (9.1 in)
1999	148.4 mm (5.8 in)
2000	154.4 mm (6.1 in)
2001	73.6 mm (2.9 in)
2002	291.8 mm (11.5 in)
2003	92.5 mm (3.6 in)
2004	138.2 mm (5.4 in)
2005	158.8 mm (6.3 in)
2006	164.6 mm (6.5 in)
2007	118.6 mm (4.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chanchichimila, 1952 to 2007. The record is 83 days in 1976, marked on the chart; the median year is 36 days.

Longest dry spell (CDD) at Chanchichimila by year
Year	Longest dry spell (CDD)
1952	18 days
1953	27 days
1954	23 days
1955	62 days
1956	47 days
1957	20 days
1958	23 days
1959	30 days
1960	33 days
1961	46 days
1962	36 days
1963	26 days
1964	46 days
1965	30 days
1966	38 days
1967	48 days
1968	71 days
1969	35 days
1970	32 days
1971	79 days
1972	47 days
1973	57 days
1974	35 days
1975	74 days
1976	83 days
1977	36 days
1978	29 days
1979	36 days
1980	43 days
1981	66 days
1982	35 days
1983	49 days
1984	37 days
1985	54 days
1986	32 days
1987	29 days
1988	34 days
1989	37 days
1990	22 days
1991	52 days
1992	34 days
1993	31 days
1994	33 days
1995	63 days
1996	30 days
1997	36 days
1998	82 days
1999	56 days
2000	30 days
2001	63 days
2002	33 days
2003	48 days
2004	35 days
2005	55 days
2006	49 days
2007	83 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

51 years, 1953 to 2007

A day with at least 81.5 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 189.7 mm (7.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Chanchichimila: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	81.5 mm (3.2 in)
5 years	108.4 mm (4.3 in)
10 years	127.0 mm (5.0 in)
25 years	151.5 mm (6.0 in)
50 years	170.4 mm (6.7 in)
100 years	189.7 mm (7.5 in)	Longer than the 51 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, 51 years of values from 1953 to 2007.

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: 163.3 mm (6.4 in) in 1959; 156.0 mm (6.1 in) in 2006; 146.8 mm (5.8 in) in 1972.

Download the Data

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