Los Castillos Weather Records (MXN00011040)

Record envelope, standing records and threshold days for Los Castillos (MXN00011040), Mexico, with 68 years of record.

Key Facts for Los Castillos

Los Castillos (MXN00011040) is a weather station in Mexico at 21.18 latitude and -101.67 longitude, 1,865 m (6,118 ft) above sea level.
The station reports from 1946 to 2013, 68 years of record.
1,464 records set at Los Castillos still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Los Castillos tied a daily record high minimum temperature of 17.8 C (64.0 F) on 26 April 2013.

About the Station

Location: Mexico, 21.18 latitude, -101.67 longitude.
Elevation: 1,865 m (6,118 ft).
Period of record: 1946 to 2013, 68 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 Los Castillos. 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 Los Castillos, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	32.8 C (91.0 F)	-2.2 C (28.0 F)	n/a	n/a
Feb	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Mar	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Apr	38.9 C (102.0 F)	4.4 C (39.9 F)	n/a	n/a
May	41.7 C (107.1 F)	7.2 C (45.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	7.8 C (46.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	9.4 C (48.9 F)	n/a	n/a
Aug	36.7 C (98.1 F)	8.9 C (48.0 F)	n/a	n/a
Sep	37.2 C (99.0 F)	5.0 C (41.0 F)	n/a	n/a
Oct	34.4 C (93.9 F)	0.6 C (33.1 F)	n/a	n/a
Nov	33.3 C (91.9 F)	-1.7 C (28.9 F)	n/a	n/a
Dec	31.1 C (88.0 F)	-6.1 C (21.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Los Castillos still stand. 1961 holds the most, with 68.

Standing records at Los Castillos by the year they were set
Year set	Standing records
1948	40
1949	30
1951	57
1952	51
1953	52
1954	26
1955	19
1956	28
1957	32
1958	34
1959	25
1960	39
1961	68
1962	40
1963	26
1964	21
1965	22
1966	26
1967	21
1968	19
1969	28
1970	21
1971	8
1972	17
1973	18
1974	13
1975	9
1976	13
1977	11
1978	9
1979	36
1980	18
1981	10
1982	16
1983	16
1984	15
1985	11
1986	16
1987	17
1988	16
1989	19
1990	19
1991	37
1992	31
1993	17
1994	14
1995	9
1996	6
1997	22
1998	10
1999	4
2000	56
2001	54
2002	19
2003	17
2004	17
2005	9
2006	16
2007	11
2008	17
2009	16
2010	25
2011	5
2012	12
2013	8

All-Time Record Progression

2 new records

2 all-time records were set at Los Castillos between 14 December 1997 and 27 December 2000. Each dot is a new record.

When Los Castillos set new all-time records
Date	Kind	Detail
1997-12-14	Record low minimum temperature	Record low minimum temperature -6.1 C (21.0 F)
2000-12-27	Record low maximum temperature	Record low maximum temperature 10.6 C (51.1 F)

Wettest Day of Each Month

Sep: 126.0 mm (5.0 in)

The wettest day on record for each calendar month at Los Castillos. The most was 126.0 mm (5.0 in) on 19 September 1957.

Record daily precipitation for each month at Los Castillos
Month	Record daily precipitation (mm)	Date
Jan	27.9 mm (1.1 in)	4 January 1958
Feb	70.1 mm (2.8 in)	4 February 2010
Mar	33.8 mm (1.3 in)	8 March 1988
Apr	22.9 mm (0.9 in)	21 April 1956
May	43.9 mm (1.7 in)	13 May 2008
Jun	65.8 mm (2.6 in)	20 June 1971
Jul	83.6 mm (3.3 in)	3 July 1973
Aug	77.0 mm (3.0 in)	5 August 1998
Sep	126.0 mm (5.0 in)	19 September 1957
Oct	99.1 mm (3.9 in)	9 October 2009
Nov	51.6 mm (2.0 in)	1 November 1953
Dec	27.7 mm (1.1 in)	22 December 1946

Period of Record Coverage

1948 to 2013

65 years of record at Los Castillos, 1948 to 2013. 2 years have data for under 90 percent of days and are left out of rankings: 1948, 2013.

Days with data per year at Los Castillos
Year	Days with data	Share of year	Complete
1948	275	75%	No
1949	337	92%	Yes
1951	365	100%	Yes
1952	365	100%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	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	365	100%	Yes
1964	333	91%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	365	100%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	365	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	361	99%	Yes
1978	364	100%	Yes
1979	363	99%	Yes
1980	364	99%	Yes
1981	365	100%	Yes
1982	334	92%	Yes
1983	334	92%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	363	99%	Yes
1988	365	100%	Yes
1989	365	100%	Yes
1990	364	100%	Yes
1991	363	99%	Yes
1992	353	96%	Yes
1993	342	94%	Yes
1994	364	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	364	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	355	97%	Yes
2002	356	98%	Yes
2003	357	98%	Yes
2004	365	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	365	100%	Yes
2013	120	33%	No

Latest Records

Latest records at Los Castillos
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 April 2013	Los Castillos, MX	daily high min (Tie)	17.8 C (64.0 F)	tie	55 years	5 of 100 (Routine)
13 April 2013	Los Castillos, MX	daily low min	7.8 C (46.0 F)	0.5 C (0.9 F)	32 years	17 of 100 (Routine)
27 March 2013	Los Castillos, MX	daily low min (Tie)	7.8 C (46.0 F)	tie	35 years	4 of 100 (Routine)
16 March 2013	Los Castillos, MX	daily low max	22.2 C (72.0 F)	0.6 C (1.1 F)	8 years	10 of 100 (Routine)
15 March 2013	Los Castillos, MX	daily low max	16.7 C (62.1 F)	7.7 C (13.9 F)	8 years	35 of 100 (Notable)
14 March 2013	Los Castillos, MX	daily low max	20.0 C (68.0 F)	5.0 C (9.0 F)	48 years	37 of 100 (Notable)
13 March 2013	Los Castillos, MX	daily low max	20.0 C (68.0 F)	5.0 C (9.0 F)	44 years	36 of 100 (Notable)
3 March 2013	Los Castillos, MX	monthly low min (Tie)	1.1 C (34.0 F)	tie	25 years	5 of 100 (Routine)
1 March 2013	Los Castillos, MX	daily low max	20.6 C (69.1 F)	1.1 C (2.0 F)	50 years	24 of 100 (Routine)
2 February 2013	Los Castillos, MX	daily high max (Tie)	31.1 C (88.0 F)	tie	50 years	5 of 100 (Routine)
9 January 2013	Los Castillos, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	64 years	6 of 100 (Routine)
1 January 2013	Los Castillos, MX	daily low max	15.6 C (60.1 F)	3.3 C (5.9 F)	55 years	32 of 100 (Routine)
31 December 2012	Los Castillos, MX	daily rain	8.6 mm (0.34 in)	4.3 mm (0.17 in)	17 years	19 of 100 (Routine)
30 November 2012	Los Castillos, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	37 years	4 of 100 (Routine)
5 November 2012	Los Castillos, MX	daily low max	18.9 C (66.0 F)	1.1 C (2.0 F)	42 years	22 of 100 (Routine)
4 November 2012	Los Castillos, MX	daily rain	27.7 mm (1.1 in)	22.4 mm (0.9 in)	42 years	46 of 100 (Notable)
4 November 2012	Los Castillos, MX	monthly low max (Tie)	17.2 C (63.0 F)	tie	31 years	6 of 100 (Routine)
26 October 2012	Los Castillos, MX	daily high max (Tie)	32.2 C (90.0 F)	tie	4 years	1 of 100 (Routine)
25 October 2012	Los Castillos, MX	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	33 years	19 of 100 (Routine)
6 October 2012	Los Castillos, MX	daily low min	7.8 C (46.0 F)	0.5 C (0.9 F)	32 years	16 of 100 (Routine)

Climate Trend

58 complete years, 1951 to 2012

One stripe for each of 58 complete years at Los Castillos, 1951 to 2012. Blue stripes are years cooler than the station's own mean of 20.2 C (68.4 F); red stripes are warmer. The coolest year was 2000, at 18.4 C (65.2 F), and the warmest was 1951, at 21.6 C (70.9 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Los Castillos as warming stripes, 1951 to 2012
Year	Annual mean temperature	Difference from the station mean
1951	21.6 C	+1.34 C
1952	21.2 C	+0.96 C
1953	21.4 C	+1.14 C
1954	20.9 C	+0.67 C
1955	20.6 C	+0.38 C
1956	20.3 C	+0.01 C
1957	21.4 C	+1.15 C
1958	20.6 C	+0.39 C
1959	20.2 C	-0.03 C
1960	21.0 C	+0.76 C
1961	21.4 C	+1.14 C
1962	21.5 C	+1.25 C
1963	21.1 C	+0.84 C
1965	20.7 C	+0.47 C
1966	20.0 C	-0.26 C
1967	20.2 C	-0.05 C
1968	19.9 C	-0.32 C
1969	21.3 C	+1.05 C
1970	20.7 C	+0.43 C
1971	20.6 C	+0.33 C
1972	20.9 C	+0.61 C
1973	20.5 C	+0.29 C
1974	20.7 C	+0.43 C
1975	20.5 C	+0.20 C
1976	20.3 C	+0.04 C
1977	20.6 C	+0.38 C
1978	20.6 C	+0.30 C
1979	20.5 C	+0.23 C
1980	20.1 C	-0.17 C
1981	19.9 C	-0.34 C
1984	19.7 C	-0.57 C
1985	19.8 C	-0.46 C
1986	19.9 C	-0.38 C
1987	19.8 C	-0.50 C
1988	20.1 C	-0.20 C
1989	20.1 C	-0.18 C
1990	19.6 C	-0.64 C
1991	19.1 C	-1.20 C
1992	18.6 C	-1.62 C
1994	19.6 C	-0.64 C
1995	19.8 C	-0.47 C
1996	20.1 C	-0.18 C
1997	19.7 C	-0.57 C
1998	20.5 C	+0.23 C
1999	20.0 C	-0.23 C
2000	18.4 C	-1.81 C
2001	18.6 C	-1.68 C
2002	20.5 C	+0.26 C
2003	20.5 C	+0.23 C
2004	19.4 C	-0.88 C
2005	20.3 C	+0.04 C
2006	20.0 C	-0.22 C
2007	19.7 C	-0.51 C
2008	19.7 C	-0.58 C
2009	20.3 C	+0.02 C
2010	19.3 C	-1.00 C
2011	20.6 C	+0.30 C
2012	20.0 C	-0.24 C

The annual mean temperature here has fallen by 0.3 C (0.2 to 0.3) per decade over 1951 to 2012. In Fahrenheit: 0.5 F (0.3 to 0.6) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Los Castillos
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.3 C (-0.3 to -0.2) per decade	-0.5 F (-0.6 to -0.3) per decade	1951 to 2012	58	Fall
Mean daily maximum	-0.2 C (-0.3 to -0.1) per decade	-0.4 F (-0.6 to -0.2) per decade	1951 to 2012	58	Fall
Mean daily minimum	-0.3 C (-0.4 to -0.2) per decade	-0.5 F (-0.7 to -0.4) per decade	1951 to 2012	58	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

1946 to 2013

Yearly extremes at Los Castillos: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	1967	37.8 C (100.0 F)	65
Coldest night (TNn)	-6.1 C (21.0 F)	1997	0.6 C (33.1 F)	65
Wettest day (Rx1day)	126.0 mm (5.0 in)	1957	49.3 mm (1.9 in)	67
Wettest five days (Rx5day)	220.0 mm (8.7 in)	1971	91.3 mm (3.6 in)	67
Longest dry spell (CDD)	166 days	1969	68 days	67

Hottest day (TXx)

The hottest day of the year at Los Castillos, 1946 to 2013. The record is 41.7 C (107.1 F) in 1967, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Los Castillos by year
Year	Hottest day (TXx)
1946	n/a
1947	n/a
1948	38.9 C (102.0 F)
1949	39.4 C (102.9 F)
1951	37.8 C (100.0 F)
1952	37.8 C (100.0 F)
1953	38.9 C (102.0 F)
1954	36.7 C (98.1 F)
1955	36.7 C (98.1 F)
1956	36.7 C (98.1 F)
1957	38.9 C (102.0 F)
1958	36.7 C (98.1 F)
1959	35.6 C (96.1 F)
1960	38.3 C (100.9 F)
1961	38.9 C (102.0 F)
1962	40.0 C (104.0 F)
1963	38.9 C (102.0 F)
1964	40.0 C (104.0 F)
1965	40.0 C (104.0 F)
1966	38.9 C (102.0 F)
1967	41.7 C (107.1 F)
1968	38.9 C (102.0 F)
1969	40.0 C (104.0 F)
1970	38.3 C (100.9 F)
1971	36.7 C (98.1 F)
1972	37.2 C (99.0 F)
1973	37.8 C (100.0 F)
1974	37.8 C (100.0 F)
1975	37.8 C (100.0 F)
1976	35.6 C (96.1 F)
1977	35.6 C (96.1 F)
1978	38.9 C (102.0 F)
1979	36.7 C (98.1 F)
1980	38.3 C (100.9 F)
1981	37.8 C (100.0 F)
1982	38.9 C (102.0 F)
1983	40.0 C (104.0 F)
1984	36.1 C (97.0 F)
1985	37.8 C (100.0 F)
1986	37.2 C (99.0 F)
1987	36.1 C (97.0 F)
1988	36.7 C (98.1 F)
1989	38.3 C (100.9 F)
1990	38.9 C (102.0 F)
1991	39.4 C (102.9 F)
1992	36.7 C (98.1 F)
1993	35.0 C (95.0 F)
1994	36.7 C (98.1 F)
1995	37.2 C (99.0 F)
1996	36.7 C (98.1 F)
1997	35.6 C (96.1 F)
1998	39.4 C (102.9 F)
1999	37.2 C (99.0 F)
2000	34.4 C (93.9 F)
2001	33.9 C (93.0 F)
2002	38.9 C (102.0 F)
2003	40.0 C (104.0 F)
2004	35.0 C (95.0 F)
2005	37.2 C (99.0 F)
2006	35.6 C (96.1 F)
2007	35.0 C (95.0 F)
2008	36.7 C (98.1 F)
2009	36.7 C (98.1 F)
2010	37.2 C (99.0 F)
2011	38.9 C (102.0 F)
2012	36.7 C (98.1 F)
2013	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Los Castillos, 1946 to 2013. The record is -6.1 C (21.0 F) in 1997, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Los Castillos by year
Year	Coldest night (TNn)
1946	n/a
1947	n/a
1948	5.0 C (41.0 F)
1949	1.7 C (35.1 F)
1951	0.6 C (33.1 F)
1952	2.8 C (37.0 F)
1953	0.0 C (32.0 F)
1954	0.0 C (32.0 F)
1955	-2.2 C (28.0 F)
1956	0.0 C (32.0 F)
1957	0.6 C (33.1 F)
1958	0.0 C (32.0 F)
1959	1.7 C (35.1 F)
1960	0.0 C (32.0 F)
1961	1.7 C (35.1 F)
1962	1.7 C (35.1 F)
1963	0.6 C (33.1 F)
1964	2.8 C (37.0 F)
1965	0.0 C (32.0 F)
1966	-1.7 C (28.9 F)
1967	0.0 C (32.0 F)
1968	0.6 C (33.1 F)
1969	1.1 C (34.0 F)
1970	0.6 C (33.1 F)
1971	3.9 C (39.0 F)
1972	1.1 C (34.0 F)
1973	-1.1 C (30.0 F)
1974	0.6 C (33.1 F)
1975	1.7 C (35.1 F)
1976	0.0 C (32.0 F)
1977	3.3 C (37.9 F)
1978	1.7 C (35.1 F)
1979	1.7 C (35.1 F)
1980	0.6 C (33.1 F)
1981	0.6 C (33.1 F)
1982	1.7 C (35.1 F)
1983	0.0 C (32.0 F)
1984	0.6 C (33.1 F)
1985	-1.1 C (30.0 F)
1986	-2.2 C (28.0 F)
1987	0.6 C (33.1 F)
1988	0.0 C (32.0 F)
1989	0.6 C (33.1 F)
1990	0.6 C (33.1 F)
1991	2.2 C (36.0 F)
1992	2.2 C (36.0 F)
1993	0.6 C (33.1 F)
1994	0.6 C (33.1 F)
1995	1.7 C (35.1 F)
1996	0.6 C (33.1 F)
1997	-6.1 C (21.0 F)
1998	0.0 C (32.0 F)
1999	1.1 C (34.0 F)
2000	0.0 C (32.0 F)
2001	0.0 C (32.0 F)
2002	1.7 C (35.1 F)
2003	0.0 C (32.0 F)
2004	1.7 C (35.1 F)
2005	1.1 C (34.0 F)
2006	-1.1 C (30.0 F)
2007	3.3 C (37.9 F)
2008	-1.1 C (30.0 F)
2009	2.2 C (36.0 F)
2010	0.0 C (32.0 F)
2011	0.0 C (32.0 F)
2012	4.4 C (39.9 F)
2013	1.1 C (34.0 F)

Wettest day (Rx1day)

The wettest day of the year at Los Castillos, 1946 to 2013. The record is 126.0 mm (5.0 in) in 1957, marked on the chart; the median year is 49.3 mm (1.9 in).

Wettest day (Rx1day) at Los Castillos by year
Year	Wettest day (Rx1day)
1946	27.7 mm (1.1 in)
1947	8.9 mm (0.35 in)
1948	49.8 mm (2.0 in)
1949	47.5 mm (1.9 in)
1951	39.9 mm (1.6 in)
1952	36.8 mm (1.4 in)
1953	51.6 mm (2.0 in)
1954	33.3 mm (1.3 in)
1955	46.0 mm (1.8 in)
1956	47.0 mm (1.9 in)
1957	126.0 mm (5.0 in)
1958	44.2 mm (1.7 in)
1959	59.9 mm (2.4 in)
1960	27.7 mm (1.1 in)
1961	54.4 mm (2.1 in)
1962	38.1 mm (1.5 in)
1963	33.8 mm (1.3 in)
1964	39.9 mm (1.6 in)
1965	31.5 mm (1.2 in)
1966	81.8 mm (3.2 in)
1967	39.9 mm (1.6 in)
1968	39.9 mm (1.6 in)
1969	25.9 mm (1.0 in)
1970	40.9 mm (1.6 in)
1971	65.8 mm (2.6 in)
1972	53.3 mm (2.1 in)
1973	83.6 mm (3.3 in)
1974	40.9 mm (1.6 in)
1975	58.9 mm (2.3 in)
1976	72.4 mm (2.9 in)
1977	48.5 mm (1.9 in)
1978	46.0 mm (1.8 in)
1979	23.1 mm (0.9 in)
1980	33.8 mm (1.3 in)
1981	58.7 mm (2.3 in)
1982	31.5 mm (1.2 in)
1983	57.2 mm (2.3 in)
1984	50.0 mm (2.0 in)
1985	40.4 mm (1.6 in)
1986	64.3 mm (2.5 in)
1987	60.2 mm (2.4 in)
1988	69.3 mm (2.7 in)
1989	60.5 mm (2.4 in)
1990	55.4 mm (2.2 in)
1991	32.3 mm (1.3 in)
1992	49.5 mm (1.9 in)
1993	89.9 mm (3.5 in)
1994	46.7 mm (1.8 in)
1995	52.6 mm (2.1 in)
1996	49.3 mm (1.9 in)
1997	60.2 mm (2.4 in)
1998	77.0 mm (3.0 in)
1999	41.1 mm (1.6 in)
2000	36.3 mm (1.4 in)
2001	73.2 mm (2.9 in)
2002	74.9 mm (2.9 in)
2003	60.2 mm (2.4 in)
2004	55.9 mm (2.2 in)
2005	30.0 mm (1.2 in)
2006	55.4 mm (2.2 in)
2007	65.3 mm (2.6 in)
2008	60.7 mm (2.4 in)
2009	99.1 mm (3.9 in)
2010	70.6 mm (2.8 in)
2011	41.9 mm (1.6 in)
2012	40.1 mm (1.6 in)
2013	5.3 mm (0.21 in)

Wettest five days (Rx5day)

The wettest five days of the year at Los Castillos, 1946 to 2013. The record is 220.0 mm (8.7 in) in 1971, marked on the chart; the median year is 91.3 mm (3.6 in).

Wettest five days (Rx5day) at Los Castillos by year
Year	Wettest five days (Rx5day)
1946	59.1 mm (2.3 in)
1947	18.6 mm (0.7 in)
1948	84.9 mm (3.3 in)
1949	80.2 mm (3.2 in)
1951	81.7 mm (3.2 in)
1952	91.3 mm (3.6 in)
1953	91.7 mm (3.6 in)
1954	59.2 mm (2.3 in)
1955	86.2 mm (3.4 in)
1956	71.9 mm (2.8 in)
1957	175.1 mm (6.9 in)
1958	106.7 mm (4.2 in)
1959	116.9 mm (4.6 in)
1960	57.3 mm (2.3 in)
1961	111.0 mm (4.4 in)
1962	80.0 mm (3.1 in)
1963	60.9 mm (2.4 in)
1964	87.3 mm (3.4 in)
1965	90.4 mm (3.6 in)
1966	112.8 mm (4.4 in)
1967	93.0 mm (3.7 in)
1968	70.8 mm (2.8 in)
1969	50.8 mm (2.0 in)
1970	78.6 mm (3.1 in)
1971	220.0 mm (8.7 in)
1972	91.4 mm (3.6 in)
1973	218.6 mm (8.6 in)
1974	91.5 mm (3.6 in)
1975	142.3 mm (5.6 in)
1976	162.6 mm (6.4 in)
1977	125.3 mm (4.9 in)
1978	116.1 mm (4.6 in)
1979	49.9 mm (2.0 in)
1980	61.0 mm (2.4 in)
1981	85.9 mm (3.4 in)
1982	73.5 mm (2.9 in)
1983	65.6 mm (2.6 in)
1984	136.4 mm (5.4 in)
1985	65.6 mm (2.6 in)
1986	109.5 mm (4.3 in)
1987	95.4 mm (3.8 in)
1988	176.2 mm (6.9 in)
1989	98.9 mm (3.9 in)
1990	78.3 mm (3.1 in)
1991	123.0 mm (4.8 in)
1992	84.8 mm (3.3 in)
1993	96.6 mm (3.8 in)
1994	87.3 mm (3.4 in)
1995	96.0 mm (3.8 in)
1996	89.1 mm (3.5 in)
1997	88.5 mm (3.5 in)
1998	160.9 mm (6.3 in)
1999	62.6 mm (2.5 in)
2000	76.5 mm (3.0 in)
2001	141.1 mm (5.6 in)
2002	138.3 mm (5.4 in)
2003	128.3 mm (5.1 in)
2004	153.5 mm (6.0 in)
2005	59.2 mm (2.3 in)
2006	113.7 mm (4.5 in)
2007	163.2 mm (6.4 in)
2008	166.2 mm (6.5 in)
2009	142.0 mm (5.6 in)
2010	183.3 mm (7.2 in)
2011	57.2 mm (2.3 in)
2012	70.1 mm (2.8 in)
2013	11.6 mm (0.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Los Castillos, 1946 to 2013. The record is 166 days in 1969, marked on the chart; the median year is 68 days.

Longest dry spell (CDD) at Los Castillos by year
Year	Longest dry spell (CDD)
1946	31 days
1947	104 days
1948	32 days
1949	71 days
1951	78 days
1952	50 days
1953	144 days
1954	100 days
1955	118 days
1956	59 days
1957	68 days
1958	66 days
1959	51 days
1960	50 days
1961	65 days
1962	102 days
1963	58 days
1964	31 days
1965	41 days
1966	57 days
1967	45 days
1968	35 days
1969	166 days
1970	68 days
1971	85 days
1972	34 days
1973	58 days
1974	40 days
1975	83 days
1976	59 days
1977	79 days
1978	41 days
1979	88 days
1980	51 days
1981	36 days
1982	44 days
1983	87 days
1984	68 days
1985	53 days
1986	118 days
1987	49 days
1988	57 days
1989	91 days
1990	69 days
1991	119 days
1992	27 days
1993	83 days
1994	107 days
1995	105 days
1996	130 days
1997	50 days
1998	101 days
1999	84 days
2000	141 days
2001	59 days
2002	85 days
2003	71 days
2004	40 days
2005	85 days
2006	86 days
2007	51 days
2008	81 days
2009	61 days
2010	94 days
2011	106 days
2012	98 days
2013	115 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

63 years, 1949 to 2012

A day with at least 49.4 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 113.4 mm (4.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Los Castillos: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	49.4 mm (1.9 in)
5 years	65.9 mm (2.6 in)
10 years	77.1 mm (3.0 in)
25 years	91.5 mm (3.6 in)
50 years	102.4 mm (4.0 in)
100 years	113.4 mm (4.5 in)	Longer than the 63 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, 63 years of values from 1949 to 2012.

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: 126.0 mm (5.0 in) in 1957; 99.1 mm (3.9 in) in 2009; 89.9 mm (3.5 in) in 1993.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Los Castillos, at 1961. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1961 ran 0.9 C (1.7 F) higher than in the years before (likely change).

Suspected changes in the annual mean temperature at Los Castillos, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1961	+0.9	+1.7	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

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