Ejido de Llano Grande Weather Records (MXN00015025)

Record envelope, standing records and threshold days for Ejido de Llano Grande (MXN00015025), Mexico, with 47 years of record.

Key Facts for Ejido de Llano Grande

Ejido de Llano Grande (MXN00015025) is a weather station in Mexico at 19.57 latitude and -99.65 longitude, 2,538 m (8,326 ft) above sea level.
The station reports from 1963 to 2009, 47 years of record.
1,464 records set at Ejido de Llano Grande still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ejido de Llano Grande set a daily record low maximum temperature of 12.2 C (54.0 F) on 21 December 2009.

About the Station

Location: Mexico, 19.57 latitude, -99.65 longitude.
Elevation: 2,538 m (8,326 ft).
Period of record: 1963 to 2009, 47 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 Ejido de Llano Grande. 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 Ejido de Llano Grande, 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)	-11.7 C (10.9 F)	n/a	n/a
Feb	30.0 C (86.0 F)	-9.4 C (15.1 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-7.2 C (19.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-7.8 C (18.0 F)	n/a	n/a
May	35.0 C (95.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	31.1 C (88.0 F)	0.0 C (32.0 F)	n/a	n/a
Jul	30.0 C (86.0 F)	0.0 C (32.0 F)	n/a	n/a
Aug	27.8 C (82.0 F)	1.1 C (34.0 F)	n/a	n/a
Sep	32.2 C (90.0 F)	-5.0 C (23.0 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	28.3 C (82.9 F)	-9.4 C (15.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ejido de Llano Grande still stand. 1998 holds the most, with 105.

Standing records at Ejido de Llano Grande by the year they were set
Year set	Standing records
1963	30
1964	49
1965	26
1966	44
1967	15
1968	17
1969	13
1970	32
1971	32
1972	25
1973	33
1974	28
1975	41
1976	49
1977	91
1978	39
1979	37
1980	23
1981	16
1982	19
1983	43
1984	24
1985	18
1986	32
1987	40
1988	25
1989	24
1990	14
1991	14
1992	23
1993	13
1994	20
1995	28
1996	22
1997	42
1998	105
1999	54
2000	46
2001	28
2002	55
2003	28
2004	22
2005	37
2006	10
2007	5
2008	16
2009	17

All-Time Record Progression

7 new records

7 all-time records were set at Ejido de Llano Grande between 12 January 1997 and 5 May 2003. Each dot is a new record.

When Ejido de Llano Grande set new all-time records
Date	Kind	Detail
1997-01-12	Record low minimum temperature	Record low minimum temperature -11.7 C (10.9 F)
1998-04-02	Record high maximum temperature	Record high maximum temperature 31.7 C (89.1 F)
1998-04-13	Record high maximum temperature	Record high maximum temperature 32.2 C (90.0 F)
1998-04-15	Record high maximum temperature	Record high maximum temperature 32.8 C (91.0 F)
1998-05-07	Record high maximum temperature	Record high maximum temperature 34.4 C (93.9 F)
1998-05-09	Record high maximum temperature	Record high maximum temperature 35.0 C (95.0 F)
2003-05-05	Record high minimum temperature	Record high minimum temperature 14.4 C (57.9 F)

Wettest Day of Each Month

Jun: 90.2 mm (3.6 in)

The wettest day on record for each calendar month at Ejido de Llano Grande. The most was 90.2 mm (3.6 in) on 13 June 1989.

Record daily precipitation for each month at Ejido de Llano Grande
Month	Record daily precipitation (mm)	Date
Jan	49.8 mm (2.0 in)	21 January 1975
Feb	23.9 mm (0.9 in)	2 February 1992
Mar	41.9 mm (1.6 in)	4 March 1988
Apr	67.8 mm (2.7 in)	18 April 2008
May	67.8 mm (2.7 in)	13 May 2008
Jun	90.2 mm (3.6 in)	13 June 1989
Jul	84.8 mm (3.3 in)	27 July 2008
Aug	88.9 mm (3.5 in)	15 August 1990
Sep	52.3 mm (2.1 in)	1 September 2003
Oct	45.7 mm (1.8 in)	9 October 1994
Nov	38.9 mm (1.5 in)	12 November 1987
Dec	25.9 mm (1.0 in)	30 December 1995

Period of Record Coverage

1963 to 2009

47 years of record at Ejido de Llano Grande, 1963 to 2009. 11 years have data for under 90 percent of days and are left out of rankings: 1963, 1970, 1990, 1993, 1999, 2001, 2002, 2005 and others.

Days with data per year at Ejido de Llano Grande
Year	Days with data	Share of year	Complete
1963	152	42%	No
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	335	92%	Yes
1968	366	100%	Yes
1969	335	92%	Yes
1970	318	87%	No
1971	363	99%	Yes
1972	335	92%	Yes
1973	334	92%	Yes
1974	364	100%	Yes
1975	363	99%	Yes
1976	365	100%	Yes
1977	364	100%	Yes
1978	364	100%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	360	98%	Yes
1985	365	100%	Yes
1986	363	99%	Yes
1987	360	99%	Yes
1988	331	90%	Yes
1989	358	98%	Yes
1990	271	74%	No
1991	365	100%	Yes
1992	362	99%	Yes
1993	252	69%	No
1994	363	99%	Yes
1995	362	99%	Yes
1996	365	100%	Yes
1997	363	99%	Yes
1998	364	100%	Yes
1999	328	90%	No
2000	364	99%	Yes
2001	327	90%	No
2002	321	88%	No
2003	355	97%	Yes
2004	363	99%	Yes
2005	289	79%	No
2006	354	97%	Yes
2007	31	8%	No
2008	240	66%	No
2009	124	34%	No

Latest Records

Latest records at Ejido de Llano Grande
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 December 2009	Ejido de Llano Grande, MX	daily low max	12.2 C (54.0 F)	1.7 C (3.1 F)	32 years	19 of 100 (Routine)
4 December 2009	Ejido de Llano Grande, MX	daily high min (Tie)	6.7 C (44.1 F)	tie	32 years	3 of 100 (Routine)
31 October 2009	Ejido de Llano Grande, MX	daily high min	8.9 C (48.0 F)	1.1 C (2.0 F)	36 years	18 of 100 (Routine)
30 October 2009	Ejido de Llano Grande, MX	daily high min (Tie)	8.9 C (48.0 F)	tie	36 years	3 of 100 (Routine)
29 October 2009	Ejido de Llano Grande, MX	daily high min	10.0 C (50.0 F)	1.1 C (2.0 F)	36 years	18 of 100 (Routine)
27 October 2009	Ejido de Llano Grande, MX	daily rain	16.3 mm (0.6 in)	8.4 mm (0.33 in)	39 years	20 of 100 (Routine)
27 October 2009	Ejido de Llano Grande, MX	daily high min (Tie)	9.4 C (48.9 F)	tie	32 years	3 of 100 (Routine)
25 October 2009	Ejido de Llano Grande, MX	daily rain (Tie)	17.3 mm (0.7 in)	tie	16 years	2 of 100 (Routine)
22 October 2009	Ejido de Llano Grande, MX	daily high max	31.7 C (89.1 F)	5.6 C (10.1 F)	4 years	26 of 100 (Routine)
21 October 2009	Ejido de Llano Grande, MX	monthly high max	33.3 C (91.9 F)	3.3 C (5.9 F)	0 years	26 of 100 (Routine)
20 October 2009	Ejido de Llano Grande, MX	monthly high max	30.0 C (86.0 F)	0.6 C (1.1 F)	4 years	17 of 100 (Routine)
7 October 2009	Ejido de Llano Grande, MX	daily high max	25.0 C (77.0 F)	0.6 C (1.1 F)	16 years	10 of 100 (Routine)
5 October 2009	Ejido de Llano Grande, MX	daily high max	25.6 C (78.1 F)	0.6 C (1.1 F)	22 years	12 of 100 (Routine)
4 October 2009	Ejido de Llano Grande, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	44 years	4 of 100 (Routine)
2 February 2009	Ejido de Llano Grande, MX	monthly low max	5.6 C (42.1 F)	2.2 C (4.0 F)	25 years	27 of 100 (Routine)
31 January 2009	Ejido de Llano Grande, MX	daily high max	27.2 C (81.0 F)	2.2 C (4.0 F)	40 years	22 of 100 (Routine)
30 January 2009	Ejido de Llano Grande, MX	daily high max	26.7 C (80.1 F)	1.7 C (3.1 F)	9 years	11 of 100 (Routine)
29 January 2009	Ejido de Llano Grande, MX	monthly high max (Tie)	27.8 C (82.0 F)	tie	1 year	3 of 100 (Routine)
28 January 2009	Ejido de Llano Grande, MX	daily high max	27.2 C (81.0 F)	1.1 C (2.0 F)	7 years	9 of 100 (Routine)
27 January 2009	Ejido de Llano Grande, MX	monthly high max (Tie)	27.8 C (82.0 F)	tie	1 year	3 of 100 (Routine)

Climate Trend

30 complete years, 1964 to 2006

One stripe for each of 30 complete years at Ejido de Llano Grande, 1964 to 2006. Blue stripes are years cooler than the station's own mean of 12.7 C (54.8 F); red stripes are warmer. The coolest year was 1977, at 10.6 C (51.1 F), and the warmest was 1998, at 14.4 C (57.9 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Ejido de Llano Grande as warming stripes, 1964 to 2006
Year	Annual mean temperature	Difference from the station mean
1964	13.3 C	+0.63 C
1965	12.9 C	+0.27 C
1966	12.6 C	-0.07 C
1967	12.6 C	-0.07 C
1968	12.2 C	-0.51 C
1971	12.5 C	-0.13 C
1974	12.1 C	-0.55 C
1977	10.6 C	-2.03 C
1978	11.9 C	-0.77 C
1979	11.8 C	-0.85 C
1980	12.8 C	+0.11 C
1981	12.4 C	-0.28 C
1982	12.6 C	-0.07 C
1983	12.5 C	-0.20 C
1984	12.2 C	-0.49 C
1985	12.3 C	-0.39 C
1986	12.2 C	-0.49 C
1987	12.3 C	-0.40 C
1989	12.1 C	-0.61 C
1991	12.6 C	-0.06 C
1992	12.3 C	-0.37 C
1994	13.4 C	+0.70 C
1995	13.5 C	+0.82 C
1996	13.0 C	+0.34 C
1997	13.1 C	+0.48 C
1998	14.4 C	+1.74 C
2000	13.7 C	+0.99 C
2003	13.6 C	+0.94 C
2004	13.3 C	+0.68 C
2006	13.3 C	+0.59 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1964 to 2006. In Fahrenheit: 0.5 F (0.2 to 0.9) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ejido de Llano Grande
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.1 to 0.5) per decade	0.5 F (0.2 to 0.9) per decade	1964 to 2006	30	Rise
Mean daily maximum	0.9 C (0.6 to 1.1) per decade	1.5 F (1.0 to 2.1) per decade	1964 to 2006	30	Rise
Mean daily minimum	-0.3 C (-0.5 to -0.1) per decade	-0.5 F (-0.8 to -0.2) per decade	1964 to 2006	30	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

1963 to 2009

Yearly extremes at Ejido de Llano Grande: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1998	28.9 C (84.0 F)	47
Coldest night (TNn)	-11.7 C (10.9 F)	1997	-6.7 C (19.9 F)	47
Wettest day (Rx1day)	90.2 mm (3.6 in)	1989	45.0 mm (1.8 in)	47
Wettest five days (Rx5day)	276.6 mm (10.9 in)	2008	85.7 mm (3.4 in)	47
Longest dry spell (CDD)	134 days	1969	58 days	47

Hottest day (TXx)

The hottest day of the year at Ejido de Llano Grande, 1963 to 2009. The record is 35.0 C (95.0 F) in 1998, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Ejido de Llano Grande by year
Year	Hottest day (TXx)
1963	28.9 C (84.0 F)
1964	30.0 C (86.0 F)
1965	26.7 C (80.1 F)
1966	27.8 C (82.0 F)
1967	27.8 C (82.0 F)
1968	27.8 C (82.0 F)
1969	28.3 C (82.9 F)
1970	29.4 C (84.9 F)
1971	30.0 C (86.0 F)
1972	25.0 C (77.0 F)
1973	27.8 C (82.0 F)
1974	27.8 C (82.0 F)
1975	28.9 C (84.0 F)
1976	26.1 C (79.0 F)
1977	25.0 C (77.0 F)
1978	26.1 C (79.0 F)
1979	26.7 C (80.1 F)
1980	29.4 C (84.9 F)
1981	27.8 C (82.0 F)
1982	28.9 C (84.0 F)
1983	31.1 C (88.0 F)
1984	28.3 C (82.9 F)
1985	27.8 C (82.0 F)
1986	28.3 C (82.9 F)
1987	30.0 C (86.0 F)
1988	28.9 C (84.0 F)
1989	29.4 C (84.9 F)
1990	26.1 C (79.0 F)
1991	29.4 C (84.9 F)
1992	27.2 C (81.0 F)
1993	27.2 C (81.0 F)
1994	31.1 C (88.0 F)
1995	30.0 C (86.0 F)
1996	30.0 C (86.0 F)
1997	28.9 C (84.0 F)
1998	35.0 C (95.0 F)
1999	31.1 C (88.0 F)
2000	31.7 C (89.1 F)
2001	30.6 C (87.1 F)
2002	35.0 C (95.0 F)
2003	32.2 C (90.0 F)
2004	31.7 C (89.1 F)
2005	32.2 C (90.0 F)
2006	29.4 C (84.9 F)
2007	25.0 C (77.0 F)
2008	31.1 C (88.0 F)
2009	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Ejido de Llano Grande, 1963 to 2009. The record is -11.7 C (10.9 F) in 1997, marked on the chart; the median year is -6.7 C (19.9 F).

Coldest night (TNn) at Ejido de Llano Grande by year
Year	Coldest night (TNn)
1963	-8.3 C (17.1 F)
1964	-2.8 C (27.0 F)
1965	-5.0 C (23.0 F)
1966	-6.7 C (19.9 F)
1967	-5.6 C (21.9 F)
1968	-5.0 C (23.0 F)
1969	-5.0 C (23.0 F)
1970	0.0 C (32.0 F)
1971	0.0 C (32.0 F)
1972	0.0 C (32.0 F)
1973	0.0 C (32.0 F)
1974	-6.1 C (21.0 F)
1975	0.0 C (32.0 F)
1976	-1.1 C (30.0 F)
1977	-7.8 C (18.0 F)
1978	-5.0 C (23.0 F)
1979	-6.1 C (21.0 F)
1980	-7.8 C (18.0 F)
1981	-7.8 C (18.0 F)
1982	-6.7 C (19.9 F)
1983	-7.8 C (18.0 F)
1984	-5.0 C (23.0 F)
1985	-6.7 C (19.9 F)
1986	-10.0 C (14.0 F)
1987	-8.3 C (17.1 F)
1988	-9.4 C (15.1 F)
1989	-7.8 C (18.0 F)
1990	-7.8 C (18.0 F)
1991	-7.8 C (18.0 F)
1992	-4.4 C (24.1 F)
1993	-6.7 C (19.9 F)
1994	-7.2 C (19.0 F)
1995	-7.2 C (19.0 F)
1996	-8.3 C (17.1 F)
1997	-11.7 C (10.9 F)
1998	-9.4 C (15.1 F)
1999	-8.9 C (16.0 F)
2000	-6.7 C (19.9 F)
2001	-5.0 C (23.0 F)
2002	-10.0 C (14.0 F)
2003	-9.4 C (15.1 F)
2004	-9.4 C (15.1 F)
2005	-7.8 C (18.0 F)
2006	-8.9 C (16.0 F)
2007	-2.2 C (28.0 F)
2008	-4.4 C (24.1 F)
2009	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Ejido de Llano Grande, 1963 to 2009. The record is 90.2 mm (3.6 in) in 1989, marked on the chart; the median year is 45.0 mm (1.8 in).

Wettest day (Rx1day) at Ejido de Llano Grande by year
Year	Wettest day (Rx1day)
1963	29.0 mm (1.1 in)
1964	61.0 mm (2.4 in)
1965	46.5 mm (1.8 in)
1966	55.1 mm (2.2 in)
1967	77.0 mm (3.0 in)
1968	49.8 mm (2.0 in)
1969	31.0 mm (1.2 in)
1970	45.0 mm (1.8 in)
1971	49.3 mm (1.9 in)
1972	47.5 mm (1.9 in)
1973	43.9 mm (1.7 in)
1974	39.9 mm (1.6 in)
1975	49.8 mm (2.0 in)
1976	59.9 mm (2.4 in)
1977	33.3 mm (1.3 in)
1978	38.9 mm (1.5 in)
1979	51.8 mm (2.0 in)
1980	51.8 mm (2.0 in)
1981	41.9 mm (1.6 in)
1982	36.8 mm (1.4 in)
1983	43.9 mm (1.7 in)
1984	35.6 mm (1.4 in)
1985	26.9 mm (1.1 in)
1986	29.0 mm (1.1 in)
1987	45.5 mm (1.8 in)
1988	54.6 mm (2.1 in)
1989	90.2 mm (3.6 in)
1990	88.9 mm (3.5 in)
1991	42.4 mm (1.7 in)
1992	47.8 mm (1.9 in)
1993	47.8 mm (1.9 in)
1994	45.7 mm (1.8 in)
1995	40.9 mm (1.6 in)
1996	41.9 mm (1.6 in)
1997	26.4 mm (1.0 in)
1998	42.9 mm (1.7 in)
1999	25.9 mm (1.0 in)
2000	41.1 mm (1.6 in)
2001	42.9 mm (1.7 in)
2002	44.5 mm (1.8 in)
2003	52.3 mm (2.1 in)
2004	48.8 mm (1.9 in)
2005	47.5 mm (1.9 in)
2006	46.0 mm (1.8 in)
2007	13.5 mm (0.5 in)
2008	84.8 mm (3.3 in)
2009	17.3 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ejido de Llano Grande, 1963 to 2009. The record is 276.6 mm (10.9 in) in 2008, marked on the chart; the median year is 85.7 mm (3.4 in).

Wettest five days (Rx5day) at Ejido de Llano Grande by year
Year	Wettest five days (Rx5day)
1963	82.9 mm (3.3 in)
1964	85.7 mm (3.4 in)
1965	95.8 mm (3.8 in)
1966	119.8 mm (4.7 in)
1967	116.9 mm (4.6 in)
1968	98.4 mm (3.9 in)
1969	84.8 mm (3.3 in)
1970	138.7 mm (5.5 in)
1971	94.8 mm (3.7 in)
1972	60.8 mm (2.4 in)
1973	95.2 mm (3.7 in)
1974	71.1 mm (2.8 in)
1975	114.3 mm (4.5 in)
1976	156.0 mm (6.1 in)
1977	80.9 mm (3.2 in)
1978	67.4 mm (2.7 in)
1979	98.8 mm (3.9 in)
1980	85.7 mm (3.4 in)
1981	76.8 mm (3.0 in)
1982	72.7 mm (2.9 in)
1983	93.5 mm (3.7 in)
1984	74.7 mm (2.9 in)
1985	69.7 mm (2.7 in)
1986	72.1 mm (2.8 in)
1987	96.8 mm (3.8 in)
1988	123.9 mm (4.9 in)
1989	113.3 mm (4.5 in)
1990	156.1 mm (6.1 in)
1991	117.1 mm (4.6 in)
1992	79.6 mm (3.1 in)
1993	93.0 mm (3.7 in)
1994	62.5 mm (2.5 in)
1995	74.2 mm (2.9 in)
1996	85.1 mm (3.4 in)
1997	61.5 mm (2.4 in)
1998	97.7 mm (3.8 in)
1999	85.5 mm (3.4 in)
2000	66.3 mm (2.6 in)
2001	114.8 mm (4.5 in)
2002	65.8 mm (2.6 in)
2003	156.1 mm (6.1 in)
2004	100.9 mm (4.0 in)
2005	78.7 mm (3.1 in)
2006	121.0 mm (4.8 in)
2007	13.5 mm (0.5 in)
2008	276.6 mm (10.9 in)
2009	35.4 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ejido de Llano Grande, 1963 to 2009. The record is 134 days in 1969, marked on the chart; the median year is 58 days.

Longest dry spell (CDD) at Ejido de Llano Grande by year
Year	Longest dry spell (CDD)
1963	57 days
1964	33 days
1965	45 days
1966	67 days
1967	65 days
1968	59 days
1969	134 days
1970	97 days
1971	44 days
1972	59 days
1973	53 days
1974	63 days
1975	64 days
1976	73 days
1977	32 days
1978	31 days
1979	59 days
1980	72 days
1981	46 days
1982	61 days
1983	58 days
1984	40 days
1985	83 days
1986	99 days
1987	49 days
1988	52 days
1989	51 days
1990	30 days
1991	87 days
1992	30 days
1993	112 days
1994	42 days
1995	26 days
1996	61 days
1997	37 days
1998	129 days
1999	78 days
2000	71 days
2001	59 days
2002	28 days
2003	75 days
2004	48 days
2005	51 days
2006	47 days
2007	23 days
2008	88 days
2009	30 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.

Frost Dates and Growing Season

29 years with a frost

Across 29 years with a frost, the median last spring frost at Ejido de Llano Grande falls on 3 April and the median first autumn frost on 24 October, which leaves a median of 194 days between them.

Fitted over all years, the growing season changes by -1.4 days per decade at this station.

Frost dates and growing season at Ejido de Llano Grande
Measure	Median, all years	Earliest period	Recent period (1964 to 2006)	Recent against earliest	Fitted trend
Last spring frost	3 April	n/a	3 April	n/a	+3.5 days per decade
First autumn frost	24 October	n/a	24 October	n/a	+2.0 days per decade
Growing days	194 days	n/a	194 days	n/a	-1.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

41 years, 1964 to 2006

A day with at least 44.4 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 78.2 mm (3.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Ejido de Llano Grande: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.4 mm (1.7 in)
5 years	54.5 mm (2.1 in)
10 years	60.8 mm (2.4 in)
25 years	68.2 mm (2.7 in)
50 years	73.4 mm (2.9 in)	Longer than the 41 years of record
100 years	78.2 mm (3.1 in)	Longer than the 41 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, 41 years of values from 1964 to 2006.

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: 90.2 mm (3.6 in) in 1989; 77.0 mm (3.0 in) in 1967; 61.0 mm (2.4 in) in 1964.

Download the Data

Data for Ejido de Llano Grande standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ejido de Llano Grande 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).