Chaparaco Weather Records (MXN00016031)

Record envelope, standing records and threshold days for Chaparaco (MXN00016031), Mexico, with 57 years of record.

Key Facts for Chaparaco

Chaparaco (MXN00016031) is a weather station in Mexico at 19.97 latitude and -102.25 longitude, 1,589 m (5,213 ft) above sea level.
The station reports from 1948 to 2004, 57 years of record.
1,464 records set at Chaparaco still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Chaparaco set a daily record high maximum temperature of 31.7 C (89.1 F) on 27 December 2004.

About the Station

Location: Mexico, 19.97 latitude, -102.25 longitude.
Elevation: 1,589 m (5,213 ft).
Period of record: 1948 to 2004, 57 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 Chaparaco. 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 Chaparaco, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.3 C (91.9 F)	-2.8 C (27.0 F)	n/a	n/a
Feb	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Mar	36.1 C (97.0 F)	1.1 C (34.0 F)	n/a	n/a
Apr	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
May	39.4 C (102.9 F)	6.7 C (44.1 F)	n/a	n/a
Jun	38.9 C (102.0 F)	7.2 C (45.0 F)	n/a	n/a
Jul	36.7 C (98.1 F)	7.8 C (46.0 F)	n/a	n/a
Aug	34.4 C (93.9 F)	8.9 C (48.0 F)	n/a	n/a
Sep	33.3 C (91.9 F)	6.1 C (43.0 F)	n/a	n/a
Oct	33.9 C (93.0 F)	2.8 C (37.0 F)	n/a	n/a
Nov	33.9 C (93.0 F)	-2.2 C (28.0 F)	n/a	n/a
Dec	32.8 C (91.0 F)	-1.1 C (30.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chaparaco still stand. 1971 holds the most, with 177.

Standing records at Chaparaco by the year they were set
Year set	Standing records
1948	17
1949	29
1950	15
1951	31
1952	32
1953	30
1954	29
1955	22
1956	22
1957	25
1958	39
1959	39
1960	37
1961	17
1962	16
1963	27
1964	11
1965	17
1966	17
1967	13
1968	18
1969	29
1970	20
1971	177
1972	167
1973	101
1974	12
1975	9
1976	21
1977	9
1978	8
1979	19
1980	16
1981	12
1982	15
1983	20
1984	12
1985	7
1986	13
1987	17
1988	15
1989	17
1990	13
1991	12
1992	26
1993	8
1994	3
1995	14
1996	5
1997	37
1998	16
1999	19
2000	26
2001	9
2002	21
2003	15
2004	21

All-Time Record Progression

2 new records

2 all-time records were set at Chaparaco between 9 January 1978 and 23 September 1980. Each dot is a new record.

When Chaparaco set new all-time records
Date	Kind	Detail
1978-01-09	Record low maximum temperature	Record low maximum temperature 11.1 C (52.0 F)
1980-09-23	Record daily precipitation	Record daily precipitation 78.0 mm (3.1 in)

Wettest Day of Each Month

Sep: 78.0 mm (3.1 in)

The wettest day on record for each calendar month at Chaparaco. The most was 78.0 mm (3.1 in) on 23 September 1980.

Record daily precipitation for each month at Chaparaco
Month	Record daily precipitation (mm)	Date
Jan	58.4 mm (2.3 in)	24 January 1980
Feb	20.6 mm (0.8 in)	12 February 2002
Mar	18.8 mm (0.7 in)	4 March 1968
Apr	47.8 mm (1.9 in)	16 April 1979
May	47.0 mm (1.9 in)	30 May 1952
Jun	71.4 mm (2.8 in)	8 June 1951
Jul	55.6 mm (2.2 in)	18 July 1998
Aug	67.3 mm (2.6 in)	18 August 1978
Sep	78.0 mm (3.1 in)	23 September 1980
Oct	54.9 mm (2.2 in)	18 October 2002
Nov	37.3 mm (1.5 in)	1 November 1953
Dec	41.9 mm (1.6 in)	15 December 1963

Period of Record Coverage

1948 to 2004

57 years of record at Chaparaco, 1948 to 2004. 2 years have data for under 90 percent of days and are left out of rankings: 1948, 2003.

Days with data per year at Chaparaco
Year	Days with data	Share of year	Complete
1948	310	85%	No
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	360	99%	Yes
1964	365	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	364	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	365	100%	Yes
1973	365	100%	Yes
1974	363	99%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	360	99%	Yes
1980	365	100%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	365	100%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	359	98%	Yes
1988	353	96%	Yes
1989	363	99%	Yes
1990	365	100%	Yes
1991	349	96%	Yes
1992	356	97%	Yes
1993	365	100%	Yes
1994	357	98%	Yes
1995	365	100%	Yes
1996	354	97%	Yes
1997	354	97%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	365	100%	Yes
2001	359	98%	Yes
2002	332	91%	Yes
2003	319	87%	No
2004	366	100%	Yes

Latest Records

Latest records at Chaparaco
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 December 2004	Chaparaco, MX	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	33 years	21 of 100 (Routine)
24 December 2004	Chaparaco, MX	daily low max	18.9 C (66.0 F)	0.5 C (0.9 F)	24 years	14 of 100 (Routine)
19 December 2004	Chaparaco, MX	daily low max	15.0 C (59.0 F)	5.0 C (9.0 F)	40 years	39 of 100 (Notable)
6 December 2004	Chaparaco, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	5 years	1 of 100 (Routine)
17 September 2004	Chaparaco, MX	daily low max	21.7 C (71.1 F)	2.2 C (4.0 F)	13 years	19 of 100 (Routine)
5 August 2004	Chaparaco, MX	daily low max	23.3 C (73.9 F)	0.6 C (1.1 F)	35 years	18 of 100 (Routine)
2 August 2004	Chaparaco, MX	daily rain	19.1 mm (0.8 in)	2.1 mm (0.08 in)	15 years	11 of 100 (Routine)
20 July 2004	Chaparaco, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	54 years	5 of 100 (Routine)
12 July 2004	Chaparaco, MX	daily low max (Tie)	21.1 C (70.0 F)	tie	28 years	3 of 100 (Routine)
27 June 2004	Chaparaco, MX	daily low max (Tie)	23.9 C (75.0 F)	tie	55 years	5 of 100 (Routine)
18 June 2004	Chaparaco, MX	daily low max	23.3 C (73.9 F)	1.7 C (3.1 F)	43 years	22 of 100 (Routine)
16 June 2004	Chaparaco, MX	daily low min (Tie)	12.8 C (55.0 F)	tie	33 years	3 of 100 (Routine)
8 June 2004	Chaparaco, MX	daily low max	21.7 C (71.1 F)	1.6 C (2.9 F)	4 years	11 of 100 (Routine)
7 June 2004	Chaparaco, MX	daily low max	20.6 C (69.1 F)	5.0 C (9.0 F)	32 years	29 of 100 (Routine)
6 June 2004	Chaparaco, MX	monthly low max (Tie)	20.0 C (68.0 F)	tie	18 years	5 of 100 (Routine)
5 June 2004	Chaparaco, MX	daily low max	22.8 C (73.0 F)	2.8 C (5.0 F)	26 years	20 of 100 (Routine)
4 June 2004	Chaparaco, MX	daily low max	22.8 C (73.0 F)	2.2 C (4.0 F)	26 years	18 of 100 (Routine)
3 June 2004	Chaparaco, MX	daily low max	21.1 C (70.0 F)	3.3 C (5.9 F)	12 years	18 of 100 (Routine)
2 June 2004	Chaparaco, MX	daily low max	23.9 C (75.0 F)	1.1 C (2.0 F)	52 years	23 of 100 (Routine)
7 May 2004	Chaparaco, MX	daily rain	25.4 mm (1.0 in)	19.6 mm (0.8 in)	12 years	31 of 100 (Routine)

Climate Trend

52 complete years, 1949 to 2004

One stripe for each of 52 complete years at Chaparaco, 1949 to 2004. Blue stripes are years cooler than the station's own mean of 19.7 C (67.4 F); red stripes are warmer. The coolest year was 2004, at 18.2 C (64.8 F), and the warmest was 1990, at 20.5 C (68.8 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Chaparaco as warming stripes, 1949 to 2004
Year	Annual mean temperature	Difference from the station mean
1949	20.0 C	+0.29 C
1950	19.6 C	-0.06 C
1951	20.0 C	+0.35 C
1952	19.8 C	+0.15 C
1953	20.0 C	+0.29 C
1954	20.3 C	+0.66 C
1955	19.8 C	+0.09 C
1956	19.5 C	-0.21 C
1957	20.4 C	+0.70 C
1958	19.8 C	+0.09 C
1959	19.8 C	+0.15 C
1960	20.2 C	+0.49 C
1961	19.8 C	+0.11 C
1962	20.0 C	+0.34 C
1963	19.7 C	+0.06 C
1964	19.6 C	-0.04 C
1965	19.4 C	-0.24 C
1966	19.2 C	-0.42 C
1967	19.4 C	-0.30 C
1968	19.3 C	-0.35 C
1969	19.3 C	-0.38 C
1970	20.1 C	+0.46 C
1971	19.8 C	+0.17 C
1973	19.7 C	0.00 C
1974	19.6 C	-0.09 C
1975	19.4 C	-0.25 C
1976	19.4 C	-0.31 C
1977	19.6 C	-0.09 C
1978	19.7 C	+0.08 C
1979	19.8 C	+0.09 C
1980	19.8 C	+0.18 C
1981	19.8 C	+0.13 C
1982	20.4 C	+0.76 C
1983	19.6 C	-0.02 C
1984	19.6 C	-0.08 C
1985	19.9 C	+0.21 C
1986	19.7 C	+0.07 C
1987	19.8 C	+0.16 C
1988	20.2 C	+0.54 C
1989	20.3 C	+0.64 C
1990	20.5 C	+0.79 C
1992	19.5 C	-0.17 C
1993	20.1 C	+0.46 C
1994	20.2 C	+0.54 C
1995	20.4 C	+0.74 C
1996	19.9 C	+0.19 C
1997	18.2 C	-1.42 C
1998	18.9 C	-0.79 C
1999	18.5 C	-1.18 C
2000	18.5 C	-1.17 C
2001	18.9 C	-0.77 C
2004	18.2 C	-1.44 C

The annual mean temperature here has fallen by 0.12 C (0.03 to 0.20) per decade over 1949 to 2004. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 52 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Chaparaco
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.12 C (-0.20 to -0.03) per decade	-0.2 F (-0.4 to -0.1) per decade	1949 to 2004	52	Fall
Mean daily maximum	-0.03 C (-0.20 to 0.14) per decade	-0.1 F (-0.4 to 0.3) per decade	1949 to 2004	52	Not clearly different from zero
Mean daily minimum	-0.2 C (-0.3 to -0.1) per decade	-0.4 F (-0.6 to -0.1) per decade	1949 to 2004	52	Fall

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

1948 to 2004

Yearly extremes at Chaparaco: 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)	1971	35.0 C (95.0 F)	57
Coldest night (TNn)	-2.8 C (27.0 F)	1955	1.7 C (35.1 F)	57
Wettest day (Rx1day)	78.0 mm (3.1 in)	1980	43.2 mm (1.7 in)	57
Wettest five days (Rx5day)	144.3 mm (5.7 in)	1980	87.2 mm (3.4 in)	57
Longest dry spell (CDD)	159 days	1991	75 days	57

Hottest day (TXx)

The hottest day of the year at Chaparaco, 1948 to 2004. The record is 39.4 C (102.9 F) in 1971, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Chaparaco by year
Year	Hottest day (TXx)
1948	35.0 C (95.0 F)
1949	36.1 C (97.0 F)
1950	34.4 C (93.9 F)
1951	35.0 C (95.0 F)
1952	35.6 C (96.1 F)
1953	36.7 C (98.1 F)
1954	35.0 C (95.0 F)
1955	35.0 C (95.0 F)
1956	33.3 C (91.9 F)
1957	35.0 C (95.0 F)
1958	35.0 C (95.0 F)
1959	33.9 C (93.0 F)
1960	35.6 C (96.1 F)
1961	35.0 C (95.0 F)
1962	35.0 C (95.0 F)
1963	35.0 C (95.0 F)
1964	35.0 C (95.0 F)
1965	35.0 C (95.0 F)
1966	35.0 C (95.0 F)
1967	37.8 C (100.0 F)
1968	35.0 C (95.0 F)
1969	35.6 C (96.1 F)
1970	36.1 C (97.0 F)
1971	39.4 C (102.9 F)
1972	38.9 C (102.0 F)
1973	38.9 C (102.0 F)
1974	35.0 C (95.0 F)
1975	33.9 C (93.0 F)
1976	35.0 C (95.0 F)
1977	33.9 C (93.0 F)
1978	35.0 C (95.0 F)
1979	33.9 C (93.0 F)
1980	34.4 C (93.9 F)
1981	35.0 C (95.0 F)
1982	36.7 C (98.1 F)
1983	37.2 C (99.0 F)
1984	35.0 C (95.0 F)
1985	35.6 C (96.1 F)
1986	36.1 C (97.0 F)
1987	35.0 C (95.0 F)
1988	35.6 C (96.1 F)
1989	37.2 C (99.0 F)
1990	37.8 C (100.0 F)
1991	36.7 C (98.1 F)
1992	36.7 C (98.1 F)
1993	36.7 C (98.1 F)
1994	35.0 C (95.0 F)
1995	35.6 C (96.1 F)
1996	35.0 C (95.0 F)
1997	33.3 C (91.9 F)
1998	35.6 C (96.1 F)
1999	34.4 C (93.9 F)
2000	35.0 C (95.0 F)
2001	34.4 C (93.9 F)
2002	35.0 C (95.0 F)
2003	35.0 C (95.0 F)
2004	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Chaparaco, 1948 to 2004. The record is -2.8 C (27.0 F) in 1955, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at Chaparaco by year
Year	Coldest night (TNn)
1948	5.0 C (41.0 F)
1949	0.6 C (33.1 F)
1950	2.2 C (36.0 F)
1951	1.7 C (35.1 F)
1952	0.6 C (33.1 F)
1953	1.1 C (34.0 F)
1954	1.7 C (35.1 F)
1955	-2.8 C (27.0 F)
1956	0.0 C (32.0 F)
1957	2.8 C (37.0 F)
1958	4.4 C (39.9 F)
1959	2.8 C (37.0 F)
1960	0.0 C (32.0 F)
1961	2.8 C (37.0 F)
1962	2.8 C (37.0 F)
1963	1.7 C (35.1 F)
1964	1.1 C (34.0 F)
1965	1.7 C (35.1 F)
1966	0.0 C (32.0 F)
1967	0.6 C (33.1 F)
1968	1.7 C (35.1 F)
1969	-2.2 C (28.0 F)
1970	2.2 C (36.0 F)
1971	0.6 C (33.1 F)
1972	0.0 C (32.0 F)
1973	-1.7 C (28.9 F)
1974	1.1 C (34.0 F)
1975	0.0 C (32.0 F)
1976	0.6 C (33.1 F)
1977	2.2 C (36.0 F)
1978	3.9 C (39.0 F)
1979	3.3 C (37.9 F)
1980	1.7 C (35.1 F)
1981	0.6 C (33.1 F)
1982	3.3 C (37.9 F)
1983	1.1 C (34.0 F)
1984	2.8 C (37.0 F)
1985	0.6 C (33.1 F)
1986	0.6 C (33.1 F)
1987	1.1 C (34.0 F)
1988	1.7 C (35.1 F)
1989	2.8 C (37.0 F)
1990	4.4 C (39.9 F)
1991	3.9 C (39.0 F)
1992	4.4 C (39.9 F)
1993	3.9 C (39.0 F)
1994	5.0 C (41.0 F)
1995	2.8 C (37.0 F)
1996	2.8 C (37.0 F)
1997	-1.1 C (30.0 F)
1998	0.0 C (32.0 F)
1999	-0.6 C (30.9 F)
2000	2.8 C (37.0 F)
2001	2.2 C (36.0 F)
2002	0.0 C (32.0 F)
2003	0.6 C (33.1 F)
2004	1.1 C (34.0 F)

Wettest day (Rx1day)

The wettest day of the year at Chaparaco, 1948 to 2004. The record is 78.0 mm (3.1 in) in 1980, marked on the chart; the median year is 43.2 mm (1.7 in).

Wettest day (Rx1day) at Chaparaco by year
Year	Wettest day (Rx1day)
1948	38.4 mm (1.5 in)
1949	58.2 mm (2.3 in)
1950	34.8 mm (1.4 in)
1951	71.4 mm (2.8 in)
1952	47.0 mm (1.9 in)
1953	43.7 mm (1.7 in)
1954	50.5 mm (2.0 in)
1955	43.7 mm (1.7 in)
1956	50.8 mm (2.0 in)
1957	30.5 mm (1.2 in)
1958	39.6 mm (1.6 in)
1959	36.3 mm (1.4 in)
1960	35.6 mm (1.4 in)
1961	59.9 mm (2.4 in)
1962	30.2 mm (1.2 in)
1963	41.9 mm (1.6 in)
1964	69.3 mm (2.7 in)
1965	42.4 mm (1.7 in)
1966	50.3 mm (2.0 in)
1967	49.3 mm (1.9 in)
1968	46.0 mm (1.8 in)
1969	31.0 mm (1.2 in)
1970	48.3 mm (1.9 in)
1971	58.7 mm (2.3 in)
1972	35.6 mm (1.4 in)
1973	35.3 mm (1.4 in)
1974	53.3 mm (2.1 in)
1975	46.7 mm (1.8 in)
1976	40.1 mm (1.6 in)
1977	31.5 mm (1.2 in)
1978	67.3 mm (2.6 in)
1979	47.8 mm (1.9 in)
1980	78.0 mm (3.1 in)
1981	51.1 mm (2.0 in)
1982	47.5 mm (1.9 in)
1983	38.9 mm (1.5 in)
1984	53.3 mm (2.1 in)
1985	58.9 mm (2.3 in)
1986	55.1 mm (2.2 in)
1987	22.9 mm (0.9 in)
1988	41.4 mm (1.6 in)
1989	33.8 mm (1.3 in)
1990	38.9 mm (1.5 in)
1991	40.4 mm (1.6 in)
1992	40.6 mm (1.6 in)
1993	31.8 mm (1.3 in)
1994	41.9 mm (1.6 in)
1995	64.8 mm (2.6 in)
1996	40.9 mm (1.6 in)
1997	39.4 mm (1.6 in)
1998	55.6 mm (2.2 in)
1999	51.6 mm (2.0 in)
2000	38.4 mm (1.5 in)
2001	40.4 mm (1.6 in)
2002	54.9 mm (2.2 in)
2003	43.2 mm (1.7 in)
2004	35.6 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chaparaco, 1948 to 2004. The record is 144.3 mm (5.7 in) in 1980, marked on the chart; the median year is 87.2 mm (3.4 in).

Wettest five days (Rx5day) at Chaparaco by year
Year	Wettest five days (Rx5day)
1948	81.1 mm (3.2 in)
1949	80.1 mm (3.2 in)
1950	110.8 mm (4.4 in)
1951	74.5 mm (2.9 in)
1952	113.5 mm (4.5 in)
1953	92.8 mm (3.7 in)
1954	83.4 mm (3.3 in)
1955	93.5 mm (3.7 in)
1956	103.0 mm (4.1 in)
1957	69.4 mm (2.7 in)
1958	85.1 mm (3.4 in)
1959	73.8 mm (2.9 in)
1960	74.5 mm (2.9 in)
1961	108.2 mm (4.3 in)
1962	69.6 mm (2.7 in)
1963	89.1 mm (3.5 in)
1964	143.1 mm (5.6 in)
1965	87.9 mm (3.5 in)
1966	99.1 mm (3.9 in)
1967	67.3 mm (2.6 in)
1968	76.2 mm (3.0 in)
1969	65.3 mm (2.6 in)
1970	71.7 mm (2.8 in)
1971	84.2 mm (3.3 in)
1972	84.6 mm (3.3 in)
1973	89.2 mm (3.5 in)
1974	114.9 mm (4.5 in)
1975	94.4 mm (3.7 in)
1976	117.7 mm (4.6 in)
1977	69.8 mm (2.7 in)
1978	129.1 mm (5.1 in)
1979	103.9 mm (4.1 in)
1980	144.3 mm (5.7 in)
1981	111.5 mm (4.4 in)
1982	68.6 mm (2.7 in)
1983	103.2 mm (4.1 in)
1984	102.1 mm (4.0 in)
1985	114.3 mm (4.5 in)
1986	86.9 mm (3.4 in)
1987	54.6 mm (2.1 in)
1988	118.9 mm (4.7 in)
1989	55.2 mm (2.2 in)
1990	63.8 mm (2.5 in)
1991	70.8 mm (2.8 in)
1992	77.4 mm (3.0 in)
1993	87.2 mm (3.4 in)
1994	82.6 mm (3.3 in)
1995	130.1 mm (5.1 in)
1996	104.7 mm (4.1 in)
1997	71.8 mm (2.8 in)
1998	88.9 mm (3.5 in)
1999	98.4 mm (3.9 in)
2000	75.5 mm (3.0 in)
2001	110.6 mm (4.4 in)
2002	87.7 mm (3.5 in)
2003	72.4 mm (2.9 in)
2004	78.2 mm (3.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chaparaco, 1948 to 2004. The record is 159 days in 1991, marked on the chart; the median year is 75 days.

Longest dry spell (CDD) at Chaparaco by year
Year	Longest dry spell (CDD)
1948	45 days
1949	122 days
1950	109 days
1951	134 days
1952	57 days
1953	71 days
1954	97 days
1955	121 days
1956	112 days
1957	95 days
1958	88 days
1959	43 days
1960	99 days
1961	67 days
1962	104 days
1963	58 days
1964	45 days
1965	56 days
1966	67 days
1967	65 days
1968	30 days
1969	87 days
1970	81 days
1971	67 days
1972	52 days
1973	73 days
1974	62 days
1975	109 days
1976	60 days
1977	51 days
1978	64 days
1979	70 days
1980	85 days
1981	37 days
1982	59 days
1983	87 days
1984	42 days
1985	73 days
1986	78 days
1987	75 days
1988	82 days
1989	101 days
1990	75 days
1991	159 days
1992	85 days
1993	132 days
1994	114 days
1995	52 days
1996	121 days
1997	50 days
1998	156 days
1999	136 days
2000	142 days
2001	71 days
2002	55 days
2003	102 days
2004	55 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

56 years, 1948 to 2004

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 80.9 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Chaparaco: 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	54.5 mm (2.1 in)
10 years	61.2 mm (2.4 in)
25 years	69.3 mm (2.7 in)
50 years	75.2 mm (3.0 in)
100 years	80.9 mm (3.2 in)	Longer than the 56 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, 56 years of values from 1948 to 2004.

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: 78.0 mm (3.1 in) in 1980; 71.4 mm (2.8 in) in 1951; 69.3 mm (2.7 in) in 1964.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

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