Coicoyan de Las Flores (Cfe) Weather Records (MXN00020018)

Record envelope, standing records and threshold days for Coicoyan de Las Flores (Cfe) (MXN00020018), Mexico, with 40 years of record.

Key Facts for Coicoyan de Las Flores (Cfe)

Coicoyan de Las Flores (Cfe) (MXN00020018) is a weather station in Mexico at 17.25 latitude and -98.28 longitude, 2,003 m (6,571 ft) above sea level.
The station reports from 1961 to 2000, 40 years of record.
1,464 records set at Coicoyan de Las Flores (Cfe) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Coicoyan de Las Flores (Cfe) set a daily record high minimum temperature of 15.6 C (60.1 F) on 25 November 2000.

About the Station

Location: Mexico, 17.25 latitude, -98.28 longitude.
Elevation: 2,003 m (6,571 ft).
Period of record: 1961 to 2000, 40 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 Coicoyan de Las Flores (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 Coicoyan de Las Flores (Cfe), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.9 C (93.0 F)	-12.2 C (10.0 F)	n/a	n/a
Feb	32.8 C (91.0 F)	-8.3 C (17.1 F)	n/a	n/a
Mar	32.2 C (90.0 F)	-7.8 C (18.0 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-5.6 C (21.9 F)	n/a	n/a
May	34.4 C (93.9 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	31.7 C (89.1 F)	-4.4 C (24.1 F)	n/a	n/a
Jul	30.6 C (87.1 F)	-4.4 C (24.1 F)	n/a	n/a
Aug	30.0 C (86.0 F)	-3.3 C (26.1 F)	n/a	n/a
Sep	32.2 C (90.0 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	29.4 C (84.9 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	30.0 C (86.0 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	29.4 C (84.9 F)	-10.0 C (14.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Coicoyan de Las Flores (Cfe) still stand. 1962 holds the most, with 258.

Standing records at Coicoyan de Las Flores (Cfe) by the year they were set
Year set	Standing records
1961	71
1962	258
1963	107
1964	23
1965	55
1966	37
1967	102
1968	64
1969	4
1970	5
1971	2
1972	3
1973	6
1974	19
1975	22
1976	22
1977	9
1978	28
1979	10
1980	5
1981	27
1982	38
1983	6
1984	31
1985	35
1986	91
1987	9
1988	10
1989	11
1990	29
1991	94
1992	78
1993	67
1994	9
1996	54
1997	14
1998	7
2000	2

All-Time Record Progression

1 new records

1 all-time records were set at Coicoyan de Las Flores (Cfe) between 2 June 1996 and 2 June 1996. Each dot is a new record.

Wettest Day of Each Month

Jun: 324.9 mm (12.8 in)

The wettest day on record for each calendar month at Coicoyan de Las Flores (Cfe). The most was 324.9 mm (12.8 in) on 21 June 1989.

Record daily precipitation for each month at Coicoyan de Las Flores (Cfe)
Month	Record daily precipitation (mm)	Date
Jan	104.9 mm (4.1 in)	11 January 1984
Feb	95.0 mm (3.7 in)	1 February 1992
Mar	49.3 mm (1.9 in)	12 March 1983
Apr	77.0 mm (3.0 in)	6 April 1973
May	99.8 mm (3.9 in)	30 May 1978
Jun	324.9 mm (12.8 in)	21 June 1989
Jul	129.8 mm (5.1 in)	6 July 1993
Aug	159.8 mm (6.3 in)	27 August 1981
Sep	185.4 mm (7.3 in)	20 September 1967
Oct	128.8 mm (5.1 in)	8 October 1997
Nov	198.9 mm (7.8 in)	11 November 1961
Dec	56.9 mm (2.2 in)	20 December 1961

Period of Record Coverage

1961 to 2000

40 years of record at Coicoyan de Las Flores (Cfe), 1961 to 2000. 5 years have data for under 90 percent of days and are left out of rankings: 1961, 1984, 1990, 1993, 1995.

Days with data per year at Coicoyan de Las Flores (Cfe)
Year	Days with data	Share of year	Complete
1961	82	22%	No
1962	362	99%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	359	98%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	363	99%	Yes
1984	123	34%	No
1985	365	100%	Yes
1986	363	99%	Yes
1987	363	99%	Yes
1988	366	100%	Yes
1989	350	96%	Yes
1990	236	65%	No
1991	364	100%	Yes
1992	366	100%	Yes
1993	304	83%	No
1994	334	92%	Yes
1995	243	67%	No
1996	365	100%	Yes
1997	364	100%	Yes
1998	334	92%	Yes
1999	334	92%	Yes
2000	366	100%	Yes

Latest Records

Latest records at Coicoyan de Las Flores (Cfe)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 November 2000	Coicoyan de Las Flores (Cfe), MX	daily high min	15.6 C (60.1 F)	0.6 C (1.1 F)	38 years	16 of 100 (Routine)
19 September 2000	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	38 years	3 of 100 (Routine)
15 September 2000	Coicoyan de Las Flores (Cfe), MX	daily high min	17.8 C (64.0 F)	1.1 C (2.0 F)	4 years	6 of 100 (Routine)
27 May 2000	Coicoyan de Las Flores (Cfe), MX	daily rain	15.7 mm (0.6 in)	6.8 mm (0.27 in)	26 years	15 of 100 (Routine)
23 May 2000	Coicoyan de Las Flores (Cfe), MX	daily rain (Tie)	24.9 mm (1.0 in)	tie	28 years	3 of 100 (Routine)
10 May 2000	Coicoyan de Las Flores (Cfe), MX	daily rain	14.0 mm (0.6 in)	3.6 mm (0.14 in)	36 years	16 of 100 (Routine)
5 May 2000	Coicoyan de Las Flores (Cfe), MX	daily rain	11.9 mm (0.5 in)	7.1 mm (0.28 in)	15 years	12 of 100 (Routine)
28 April 2000	Coicoyan de Las Flores (Cfe), MX	daily rain	15.0 mm (0.6 in)	7.1 mm (0.28 in)	5 years	10 of 100 (Routine)
21 October 1999	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	2 years	0 of 100 (Routine)
20 October 1999	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	36 years	3 of 100 (Routine)
11 October 1999	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	36 years	3 of 100 (Routine)
8 October 1999	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	2 years	0 of 100 (Routine)
6 October 1999	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	2 years	0 of 100 (Routine)
28 September 1999	Coicoyan de Las Flores (Cfe), MX	daily rain	73.9 mm (2.9 in)	26.9 mm (1.1 in)	18 years	20 of 100 (Routine)
21 September 1999	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	36 years	3 of 100 (Routine)
20 September 1999	Coicoyan de Las Flores (Cfe), MX	daily high min (Tie)	16.7 C (62.1 F)	tie	36 years	3 of 100 (Routine)
29 August 1999	Coicoyan de Las Flores (Cfe), MX	daily rain	59.9 mm (2.4 in)	14.9 mm (0.6 in)	24 years	18 of 100 (Routine)
3 August 1999	Coicoyan de Las Flores (Cfe), MX	daily rain	66.3 mm (2.6 in)	26.4 mm (1.0 in)	32 years	26 of 100 (Routine)
4 July 1999	Coicoyan de Las Flores (Cfe), MX	daily rain	38.9 mm (1.5 in)	5.6 mm (0.22 in)	4 years	7 of 100 (Routine)
1 July 1999	Coicoyan de Las Flores (Cfe), MX	daily rain	54.9 mm (2.2 in)	5.1 mm (0.20 in)	16 years	10 of 100 (Routine)

Climate Trend

31 complete years, 1962 to 2000

One stripe for each of 31 complete years at Coicoyan de Las Flores (Cfe), 1962 to 2000. Blue stripes are years cooler than the station's own mean of 15.1 C (59.1 F); red stripes are warmer. The coolest year was 1992, at 9.2 C (48.5 F), and the warmest was 1977, at 18.2 C (64.8 F). The strongest colour marks a difference of 6.0 C (10.8 F).

Annual mean temperature at Coicoyan de Las Flores (Cfe) as warming stripes, 1962 to 2000
Year	Annual mean temperature	Difference from the station mean
1962	17.7 C	+2.59 C
1963	17.3 C	+2.18 C
1964	16.1 C	+1.04 C
1965	16.5 C	+1.42 C
1966	16.2 C	+1.12 C
1967	17.3 C	+2.27 C
1968	17.7 C	+2.59 C
1969	16.0 C	+0.96 C
1970	15.7 C	+0.63 C
1971	16.0 C	+0.89 C
1972	16.7 C	+1.66 C
1973	17.1 C	+1.98 C
1974	17.8 C	+2.76 C
1975	17.4 C	+2.36 C
1976	18.0 C	+2.91 C
1977	18.2 C	+3.17 C
1978	17.7 C	+2.62 C
1979	14.6 C	-0.52 C
1980	12.8 C	-2.29 C
1981	11.2 C	-3.91 C
1982	11.2 C	-3.87 C
1983	11.7 C	-3.34 C
1985	11.5 C	-3.60 C
1986	10.3 C	-4.75 C
1987	11.3 C	-3.80 C
1988	11.9 C	-3.16 C
1991	9.6 C	-5.44 C
1992	9.2 C	-5.92 C
1996	17.5 C	+2.40 C
1997	17.9 C	+2.82 C
2000	17.3 C	+2.26 C

The annual mean temperature here has fallen by 1.3 C (0.3 to 2.2) per decade over 1962 to 2000. In Fahrenheit: 2.3 F (0.5 to 4.0) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Coicoyan de Las Flores (Cfe)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-1.3 C (-2.2 to -0.3) per decade	-2.3 F (-4.0 to -0.5) per decade	1962 to 2000	31	Fall
Mean daily maximum	-0.7 C (-1.4 to 0.1) per decade	-1.2 F (-2.5 to 0.1) per decade	1962 to 2000	31	Not clearly different from zero
Mean daily minimum	-1.8 C (-3.5 to -0.2) per decade	-3.3 F (-6.3 to -0.3) per decade	1962 to 2000	31	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

1961 to 2000

Yearly extremes at Coicoyan de Las Flores (Cfe): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1967	27.0 C (80.5 F)	40
Coldest night (TNn)	-12.2 C (10.0 F)	1986	0.3 C (32.5 F)	40
Wettest day (Rx1day)	324.9 mm (12.8 in)	1989	89.7 mm (3.5 in)	40
Wettest five days (Rx5day)	810.6 mm (31.9 in)	1967	203.4 mm (8.0 in)	40
Longest dry spell (CDD)	152 days	1999	61 days	40

Hottest day (TXx)

The hottest day of the year at Coicoyan de Las Flores (Cfe), 1961 to 2000. The record is 34.4 C (93.9 F) in 1967, marked on the chart; the median year is 27.0 C (80.5 F).

Hottest day (TXx) at Coicoyan de Las Flores (Cfe) by year
Year	Hottest day (TXx)
1961	25.6 C (78.1 F)
1962	21.7 C (71.1 F)
1963	28.3 C (82.9 F)
1964	31.1 C (88.0 F)
1965	32.2 C (90.0 F)
1966	30.6 C (87.1 F)
1967	34.4 C (93.9 F)
1968	31.7 C (89.1 F)
1969	27.8 C (82.0 F)
1970	26.1 C (79.0 F)
1971	27.8 C (82.0 F)
1972	28.3 C (82.9 F)
1973	29.4 C (84.9 F)
1974	32.8 C (91.0 F)
1975	30.0 C (86.0 F)
1976	30.0 C (86.0 F)
1977	29.4 C (84.9 F)
1978	31.7 C (89.1 F)
1979	26.1 C (79.0 F)
1980	25.0 C (77.0 F)
1981	25.6 C (78.1 F)
1982	32.2 C (90.0 F)
1983	26.7 C (80.1 F)
1984	23.9 C (75.0 F)
1985	26.7 C (80.1 F)
1986	33.9 C (93.0 F)
1987	27.2 C (81.0 F)
1988	26.7 C (80.1 F)
1989	25.6 C (78.1 F)
1990	25.0 C (77.0 F)
1991	25.0 C (77.0 F)
1992	30.0 C (86.0 F)
1993	23.9 C (75.0 F)
1994	25.0 C (77.0 F)
1995	26.7 C (80.1 F)
1996	26.7 C (80.1 F)
1997	26.7 C (80.1 F)
1998	27.8 C (82.0 F)
1999	26.7 C (80.1 F)
2000	26.7 C (80.1 F)

Coldest night (TNn)

The coldest night of the year at Coicoyan de Las Flores (Cfe), 1961 to 2000. The record is -12.2 C (10.0 F) in 1986, marked on the chart; the median year is 0.3 C (32.5 F).

Coldest night (TNn) at Coicoyan de Las Flores (Cfe) by year
Year	Coldest night (TNn)
1961	11.7 C (53.1 F)
1962	11.7 C (53.1 F)
1963	4.4 C (39.9 F)
1964	3.3 C (37.9 F)
1965	0.0 C (32.0 F)
1966	0.0 C (32.0 F)
1967	0.6 C (33.1 F)
1968	1.7 C (35.1 F)
1969	0.6 C (33.1 F)
1970	0.0 C (32.0 F)
1971	0.0 C (32.0 F)
1972	0.6 C (33.1 F)
1973	1.1 C (34.0 F)
1974	2.8 C (37.0 F)
1975	1.7 C (35.1 F)
1976	1.7 C (35.1 F)
1977	1.7 C (35.1 F)
1978	1.7 C (35.1 F)
1979	3.9 C (39.0 F)
1980	-4.4 C (24.1 F)
1981	-9.4 C (15.1 F)
1982	-10.0 C (14.0 F)
1983	-5.0 C (23.0 F)
1984	-10.0 C (14.0 F)
1985	-7.8 C (18.0 F)
1986	-12.2 C (10.0 F)
1987	-7.2 C (19.0 F)
1988	-7.2 C (19.0 F)
1989	-7.2 C (19.0 F)
1990	-3.3 C (26.1 F)
1991	-5.0 C (23.0 F)
1992	-6.1 C (21.0 F)
1993	-5.0 C (23.0 F)
1994	-4.4 C (24.1 F)
1995	-3.3 C (26.1 F)
1996	0.6 C (33.1 F)
1997	5.6 C (42.1 F)
1998	2.8 C (37.0 F)
1999	1.7 C (35.1 F)
2000	2.8 C (37.0 F)

Wettest day (Rx1day)

The wettest day of the year at Coicoyan de Las Flores (Cfe), 1961 to 2000. The record is 324.9 mm (12.8 in) in 1989, marked on the chart; the median year is 89.7 mm (3.5 in).

Wettest day (Rx1day) at Coicoyan de Las Flores (Cfe) by year
Year	Wettest day (Rx1day)
1961	198.9 mm (7.8 in)
1962	117.9 mm (4.6 in)
1963	19.8 mm (0.8 in)
1964	19.8 mm (0.8 in)
1965	65.3 mm (2.6 in)
1966	65.8 mm (2.6 in)
1967	185.4 mm (7.3 in)
1968	105.4 mm (4.1 in)
1969	59.9 mm (2.4 in)
1970	99.8 mm (3.9 in)
1971	60.7 mm (2.4 in)
1972	71.4 mm (2.8 in)
1973	110.0 mm (4.3 in)
1974	79.8 mm (3.1 in)
1975	74.9 mm (2.9 in)
1976	60.5 mm (2.4 in)
1977	45.0 mm (1.8 in)
1978	99.8 mm (3.9 in)
1979	152.4 mm (6.0 in)
1980	83.3 mm (3.3 in)
1981	159.8 mm (6.3 in)
1982	91.9 mm (3.6 in)
1983	79.0 mm (3.1 in)
1984	104.9 mm (4.1 in)
1985	51.8 mm (2.0 in)
1986	73.9 mm (2.9 in)
1987	88.9 mm (3.5 in)
1988	95.8 mm (3.8 in)
1989	324.9 mm (12.8 in)
1990	86.4 mm (3.4 in)
1991	90.4 mm (3.6 in)
1992	120.4 mm (4.7 in)
1993	129.8 mm (5.1 in)
1994	68.3 mm (2.7 in)
1995	90.9 mm (3.6 in)
1996	199.9 mm (7.9 in)
1997	128.8 mm (5.1 in)
1998	82.8 mm (3.3 in)
1999	73.9 mm (2.9 in)
2000	99.8 mm (3.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Coicoyan de Las Flores (Cfe), 1961 to 2000. The record is 810.6 mm (31.9 in) in 1967, marked on the chart; the median year is 203.4 mm (8.0 in).

Wettest five days (Rx5day) at Coicoyan de Las Flores (Cfe) by year
Year	Wettest five days (Rx5day)
1961	456.5 mm (18.0 in)
1962	297.5 mm (11.7 in)
1963	68.0 mm (2.7 in)
1964	75.2 mm (3.0 in)
1965	212.7 mm (8.4 in)
1966	185.5 mm (7.3 in)
1967	810.6 mm (31.9 in)
1968	380.4 mm (15.0 in)
1969	219.5 mm (8.6 in)
1970	182.6 mm (7.2 in)
1971	141.2 mm (5.6 in)
1972	161.6 mm (6.4 in)
1973	379.5 mm (14.9 in)
1974	219.5 mm (8.6 in)
1975	304.8 mm (12.0 in)
1976	189.0 mm (7.4 in)
1977	135.8 mm (5.3 in)
1978	212.8 mm (8.4 in)
1979	385.9 mm (15.2 in)
1980	176.2 mm (6.9 in)
1981	319.3 mm (12.6 in)
1982	151.7 mm (6.0 in)
1983	192.1 mm (7.6 in)
1984	148.4 mm (5.8 in)
1985	205.3 mm (8.1 in)
1986	153.5 mm (6.0 in)
1987	202.1 mm (8.0 in)
1988	210.1 mm (8.3 in)
1989	387.4 mm (15.3 in)
1990	197.9 mm (7.8 in)
1991	147.9 mm (5.8 in)
1992	204.7 mm (8.1 in)
1993	296.1 mm (11.7 in)
1994	172.0 mm (6.8 in)
1995	168.7 mm (6.6 in)
1996	353.3 mm (13.9 in)
1997	241.3 mm (9.5 in)
1998	192.9 mm (7.6 in)
1999	154.7 mm (6.1 in)
2000	249.4 mm (9.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Coicoyan de Las Flores (Cfe), 1961 to 2000. The record is 152 days in 1999, marked on the chart; the median year is 61 days.

Longest dry spell (CDD) at Coicoyan de Las Flores (Cfe) by year
Year	Longest dry spell (CDD)
1961	37 days
1962	47 days
1963	52 days
1964	107 days
1965	103 days
1966	59 days
1967	64 days
1968	24 days
1969	57 days
1970	67 days
1971	108 days
1972	72 days
1973	94 days
1974	77 days
1975	111 days
1976	90 days
1977	50 days
1978	31 days
1979	43 days
1980	37 days
1981	38 days
1982	55 days
1983	72 days
1984	64 days
1985	61 days
1986	56 days
1987	53 days
1988	110 days
1989	87 days
1990	25 days
1991	86 days
1992	55 days
1993	39 days
1994	76 days
1995	50 days
1996	61 days
1997	56 days
1998	131 days
1999	152 days
2000	118 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

35 years, 1962 to 2000

A day with at least 83.4 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 309.5 mm (12.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Coicoyan de Las Flores (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	83.4 mm (3.3 in)
5 years	126.5 mm (5.0 in)
10 years	161.0 mm (6.3 in)
25 years	212.6 mm (8.4 in)
50 years	257.8 mm (10.1 in)	Longer than the 35 years of record
100 years	309.5 mm (12.2 in)	Longer than the 35 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, 35 years of values from 1962 to 2000.

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: 324.9 mm (12.8 in) in 1989; 199.9 mm (7.9 in) in 1996; 185.4 mm (7.3 in) in 1967.

Download the Data

Data for Coicoyan de Las Flores (Cfe) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Coicoyan de Las Flores (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 2026-10-17 (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).