San Juan de Guadalupe (Dge) Weather Records (MXN00010099)

Record envelope, standing records and threshold days for San Juan de Guadalupe (Dge) (MXN00010099), Mexico, with 50 years of record.

Key Facts for San Juan de Guadalupe (Dge)

San Juan de Guadalupe (Dge) (MXN00010099) is a weather station in Mexico at 24.62 latitude and -102.77 longitude, 1,531 m (5,022 ft) above sea level.
The station reports from 1963 to 2012, 50 years of record.
1,464 records set at San Juan de Guadalupe (Dge) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
San Juan de Guadalupe (Dge) set a daily record high maximum temperature of 32.8 C (91.0 F) on 29 November 2012.

About the Station

Location: Mexico, 24.62 latitude, -102.77 longitude.
Elevation: 1,531 m (5,022 ft).
Period of record: 1963 to 2012, 50 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 San Juan de Guadalupe (Dge). 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 San Juan de Guadalupe (Dge), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	-10.0 C (14.0 F)	n/a	n/a
Feb	36.7 C (98.1 F)	-8.3 C (17.1 F)	n/a	n/a
Mar	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
Apr	38.9 C (102.0 F)	-1.1 C (30.0 F)	n/a	n/a
May	40.0 C (104.0 F)	0.6 C (33.1 F)	n/a	n/a
Jun	42.8 C (109.0 F)	0.6 C (33.1 F)	n/a	n/a
Jul	38.3 C (100.9 F)	0.6 C (33.1 F)	n/a	n/a
Aug	38.9 C (102.0 F)	0.6 C (33.1 F)	n/a	n/a
Sep	37.8 C (100.0 F)	0.6 C (33.1 F)	n/a	n/a
Oct	38.9 C (102.0 F)	0.0 C (32.0 F)	n/a	n/a
Nov	35.0 C (95.0 F)	-6.1 C (21.0 F)	n/a	n/a
Dec	35.0 C (95.0 F)	-12.2 C (10.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juan de Guadalupe (Dge) still stand. 1965 holds the most, with 117.

Standing records at San Juan de Guadalupe (Dge) by the year they were set
Year set	Standing records
1964	63
1965	117
1966	35
1967	29
1968	27
1969	51
1970	42
1971	16
1972	19
1973	22
1974	28
1975	19
1976	5
1977	33
1978	14
1979	14
1980	66
1981	6
1982	21
1983	7
1984	19
1985	28
1986	30
1987	32
1988	11
1989	32
1990	4
1991	36
1992	77
1993	57
1994	14
1995	7
1996	28
1997	50
1998	48
1999	53
2000	42
2001	39
2002	40
2003	18
2004	10
2005	21
2006	20
2007	17
2008	19
2009	21
2010	6
2011	15
2012	36

All-Time Record Progression

3 new records

3 all-time records were set at San Juan de Guadalupe (Dge) between 19 December 1996 and 9 June 2010. Each dot is a new record.

When San Juan de Guadalupe (Dge) set new all-time records
Date	Kind	Detail
1996-12-19	Record low minimum temperature	Record low minimum temperature -12.2 C (10.0 F)
2000-06-05	Record daily precipitation	Record daily precipitation 84.8 mm (3.3 in)
2010-06-09	Record high maximum temperature	Record high maximum temperature 42.8 C (109.0 F)

Wettest Day of Each Month

Jun: 84.8 mm (3.3 in)

The wettest day on record for each calendar month at San Juan de Guadalupe (Dge). The most was 84.8 mm (3.3 in) on 5 June 2000.

Record daily precipitation for each month at San Juan de Guadalupe (Dge)
Month	Record daily precipitation (mm)	Date
Jan	48.3 mm (1.9 in)	15 January 1992
Feb	26.4 mm (1.0 in)	26 February 1987
Mar	34.3 mm (1.4 in)	21 March 2004
Apr	46.0 mm (1.8 in)	26 April 1992
May	56.9 mm (2.2 in)	28 May 1983
Jun	84.8 mm (3.3 in)	5 June 2000
Jul	61.5 mm (2.4 in)	16 July 1984
Aug	65.8 mm (2.6 in)	21 August 1965
Sep	59.9 mm (2.4 in)	1 September 2004
Oct	83.8 mm (3.3 in)	5 October 1978
Nov	31.8 mm (1.3 in)	25 November 1982
Dec	31.0 mm (1.2 in)	2 December 1965

Period of Record Coverage

1964 to 2012

49 years of record at San Juan de Guadalupe (Dge), 1964 to 2012. 5 years have data for under 90 percent of days and are left out of rankings: 1964, 1971, 1973, 1990, 1991.

Days with data per year at San Juan de Guadalupe (Dge)
Year	Days with data	Share of year	Complete
1964	315	86%	No
1965	341	93%	Yes
1966	365	100%	Yes
1967	363	99%	Yes
1968	366	100%	Yes
1969	361	99%	Yes
1970	363	99%	Yes
1971	303	83%	No
1972	366	100%	Yes
1973	303	83%	No
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	365	100%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	335	92%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	59	16%	No
1991	135	37%	No
1992	335	92%	Yes
1993	363	99%	Yes
1994	364	100%	Yes
1995	364	100%	Yes
1996	366	100%	Yes
1997	357	98%	Yes
1998	359	98%	Yes
1999	353	97%	Yes
2000	337	92%	Yes
2001	333	91%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	365	100%	Yes
2005	365	100%	Yes
2006	334	92%	Yes
2007	363	99%	Yes
2008	366	100%	Yes
2009	364	100%	Yes
2010	364	100%	Yes
2011	335	92%	Yes
2012	331	90%	Yes

Latest Records

Latest records at San Juan de Guadalupe (Dge)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	32.8 C (91.0 F)	2.8 C (5.0 F)	45 years	23 of 100 (Routine)
28 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	31.7 C (89.1 F)	1.1 C (2.0 F)	42 years	18 of 100 (Routine)
25 November 2012	San Juan de Guadalupe (Dge), MX	daily high min	11.7 C (53.1 F)	1.7 C (3.1 F)	5 years	10 of 100 (Routine)
21 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	9 years	8 of 100 (Routine)
20 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	32.8 C (91.0 F)	2.2 C (4.0 F)	37 years	20 of 100 (Routine)
19 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	42 years	18 of 100 (Routine)
16 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	48 years	22 of 100 (Routine)
15 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	40 years	17 of 100 (Routine)
13 November 2012	San Juan de Guadalupe (Dge), MX	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	48 years	19 of 100 (Routine)
12 November 2012	San Juan de Guadalupe (Dge), MX	daily low max	12.8 C (55.0 F)	2.8 C (5.0 F)	19 years	15 of 100 (Routine)
10 November 2012	San Juan de Guadalupe (Dge), MX	monthly high max (Tie)	35.0 C (95.0 F)	tie	48 years	7 of 100 (Routine)
27 October 2012	San Juan de Guadalupe (Dge), MX	daily high max (Tie)	33.9 C (93.0 F)	tie	47 years	4 of 100 (Routine)
23 October 2012	San Juan de Guadalupe (Dge), MX	daily high max	32.8 C (91.0 F)	1.1 C (2.0 F)	43 years	18 of 100 (Routine)
22 October 2012	San Juan de Guadalupe (Dge), MX	daily high max (Tie)	32.8 C (91.0 F)	tie	43 years	4 of 100 (Routine)
14 October 2012	San Juan de Guadalupe (Dge), MX	daily rain	30.0 mm (1.2 in)	14.3 mm (0.6 in)	9 years	20 of 100 (Routine)
12 September 2012	San Juan de Guadalupe (Dge), MX	daily high max (Tie)	35.0 C (95.0 F)	tie	47 years	4 of 100 (Routine)
7 September 2012	San Juan de Guadalupe (Dge), MX	daily high max	33.9 C (93.0 F)	1.1 C (2.0 F)	47 years	20 of 100 (Routine)
5 September 2012	San Juan de Guadalupe (Dge), MX	daily high max (Tie)	33.9 C (93.0 F)	tie	47 years	4 of 100 (Routine)
3 September 2012	San Juan de Guadalupe (Dge), MX	daily high max	35.0 C (95.0 F)	1.1 C (2.0 F)	48 years	20 of 100 (Routine)
31 August 2012	San Juan de Guadalupe (Dge), MX	daily high max (Tie)	35.0 C (95.0 F)	tie	47 years	4 of 100 (Routine)

Climate Trend

36 complete years, 1966 to 2010

One stripe for each of 36 complete years at San Juan de Guadalupe (Dge), 1966 to 2010. Blue stripes are years cooler than the station's own mean of 17.6 C (63.7 F); red stripes are warmer. The coolest year was 1999, at 14.4 C (57.9 F), and the warmest was 1980, at 20.3 C (68.5 F). The strongest colour marks a difference of 3.3 C (5.9 F).

Annual mean temperature at San Juan de Guadalupe (Dge) as warming stripes, 1966 to 2010
Year	Annual mean temperature	Difference from the station mean
1966	19.2 C	+1.62 C
1967	19.8 C	+2.15 C
1968	19.3 C	+1.69 C
1969	20.0 C	+2.36 C
1970	19.3 C	+1.68 C
1972	19.6 C	+2.02 C
1974	19.6 C	+2.02 C
1975	19.0 C	+1.36 C
1976	18.6 C	+0.97 C
1977	19.8 C	+2.19 C
1978	19.6 C	+1.94 C
1979	18.3 C	+0.69 C
1980	20.3 C	+2.65 C
1981	17.5 C	-0.10 C
1982	17.9 C	+0.32 C
1983	17.3 C	-0.33 C
1984	16.3 C	-1.33 C
1985	16.6 C	-1.03 C
1986	16.1 C	-1.57 C
1988	16.7 C	-0.90 C
1989	18.3 C	+0.64 C
1993	16.1 C	-1.52 C
1994	16.5 C	-1.12 C
1995	17.5 C	-0.12 C
1996	16.1 C	-1.56 C
1997	14.7 C	-2.94 C
1998	15.1 C	-2.50 C
1999	14.4 C	-3.21 C
2002	17.4 C	-0.26 C
2003	17.9 C	+0.27 C
2004	16.6 C	-1.02 C
2005	16.8 C	-0.87 C
2007	17.0 C	-0.64 C
2008	16.2 C	-1.39 C
2009	16.8 C	-0.84 C
2010	16.4 C	-1.18 C

The annual mean temperature here has fallen by 0.9 C (0.6 to 1.2) per decade over 1966 to 2010. In Fahrenheit: 1.6 F (1.1 to 2.1) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Juan de Guadalupe (Dge)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.9 C (-1.2 to -0.6) per decade	-1.6 F (-2.1 to -1.1) per decade	1966 to 2010	36	Fall
Mean daily maximum	-1.6 C (-1.9 to -1.3) per decade	-3.0 F (-3.5 to -2.4) per decade	1966 to 2010	36	Fall
Mean daily minimum	-0.1 C (-0.6 to 0.3) per decade	-0.2 F (-1.1 to 0.6) per decade	1966 to 2010	36	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

1963 to 2012

Yearly extremes at San Juan de Guadalupe (Dge): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	2010	35.6 C (96.1 F)	49
Coldest night (TNn)	-12.2 C (10.0 F)	1996	-3.3 C (26.1 F)	49
Wettest day (Rx1day)	84.8 mm (3.3 in)	2000	38.8 mm (1.5 in)	50
Wettest five days (Rx5day)	196.0 mm (7.7 in)	2000	63.2 mm (2.5 in)	50
Longest dry spell (CDD)	337 days	1993	89 days	50

Hottest day (TXx)

The hottest day of the year at San Juan de Guadalupe (Dge), 1963 to 2012. The record is 42.8 C (109.0 F) in 2010, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at San Juan de Guadalupe (Dge) by year
Year	Hottest day (TXx)
1963	n/a
1964	40.0 C (104.0 F)
1965	40.0 C (104.0 F)
1966	40.0 C (104.0 F)
1967	40.0 C (104.0 F)
1968	37.8 C (100.0 F)
1969	40.0 C (104.0 F)
1970	40.0 C (104.0 F)
1971	38.9 C (102.0 F)
1972	35.6 C (96.1 F)
1973	37.8 C (100.0 F)
1974	38.9 C (102.0 F)
1975	35.6 C (96.1 F)
1976	36.7 C (98.1 F)
1977	35.6 C (96.1 F)
1978	35.6 C (96.1 F)
1979	35.0 C (95.0 F)
1980	35.6 C (96.1 F)
1981	33.9 C (93.0 F)
1982	36.7 C (98.1 F)
1983	35.6 C (96.1 F)
1984	35.0 C (95.0 F)
1985	35.0 C (95.0 F)
1986	35.0 C (95.0 F)
1987	33.9 C (93.0 F)
1988	35.0 C (95.0 F)
1989	37.8 C (100.0 F)
1990	25.6 C (78.1 F)
1991	35.0 C (95.0 F)
1992	35.6 C (96.1 F)
1993	35.6 C (96.1 F)
1994	40.0 C (104.0 F)
1995	35.6 C (96.1 F)
1996	35.6 C (96.1 F)
1997	35.0 C (95.0 F)
1998	35.6 C (96.1 F)
1999	35.0 C (95.0 F)
2000	37.8 C (100.0 F)
2001	32.8 C (91.0 F)
2002	31.7 C (89.1 F)
2003	38.9 C (102.0 F)
2004	31.7 C (89.1 F)
2005	35.0 C (95.0 F)
2006	33.9 C (93.0 F)
2007	31.7 C (89.1 F)
2008	35.0 C (95.0 F)
2009	30.6 C (87.1 F)
2010	42.8 C (109.0 F)
2011	38.9 C (102.0 F)
2012	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at San Juan de Guadalupe (Dge), 1963 to 2012. The record is -12.2 C (10.0 F) in 1996, marked on the chart; the median year is -3.3 C (26.1 F).

Coldest night (TNn) at San Juan de Guadalupe (Dge) by year
Year	Coldest night (TNn)
1963	n/a
1964	-2.2 C (28.0 F)
1965	-2.2 C (28.0 F)
1966	-6.1 C (21.0 F)
1967	-6.1 C (21.0 F)
1968	-4.4 C (24.1 F)
1969	-2.2 C (28.0 F)
1970	-4.4 C (24.1 F)
1971	-3.3 C (26.1 F)
1972	-3.3 C (26.1 F)
1973	-7.2 C (19.0 F)
1974	-4.4 C (24.1 F)
1975	-5.0 C (23.0 F)
1976	-4.4 C (24.1 F)
1977	0.6 C (33.1 F)
1978	-0.6 C (30.9 F)
1979	-9.4 C (15.1 F)
1980	-8.3 C (17.1 F)
1981	-6.1 C (21.0 F)
1982	-7.2 C (19.0 F)
1983	-9.4 C (15.1 F)
1984	-5.0 C (23.0 F)
1985	-10.0 C (14.0 F)
1986	-8.3 C (17.1 F)
1987	-6.1 C (21.0 F)
1988	-10.0 C (14.0 F)
1989	-6.1 C (21.0 F)
1990	-7.2 C (19.0 F)
1991	0.6 C (33.1 F)
1992	0.6 C (33.1 F)
1993	0.6 C (33.1 F)
1994	0.6 C (33.1 F)
1995	0.0 C (32.0 F)
1996	-12.2 C (10.0 F)
1997	-10.0 C (14.0 F)
1998	0.6 C (33.1 F)
1999	3.9 C (39.0 F)
2000	0.6 C (33.1 F)
2001	3.9 C (39.0 F)
2002	1.7 C (35.1 F)
2003	0.0 C (32.0 F)
2004	2.8 C (37.0 F)
2005	2.8 C (37.0 F)
2006	2.8 C (37.0 F)
2007	5.0 C (41.0 F)
2008	3.9 C (39.0 F)
2009	5.0 C (41.0 F)
2010	3.9 C (39.0 F)
2011	-6.1 C (21.0 F)
2012	-7.2 C (19.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Juan de Guadalupe (Dge), 1963 to 2012. The record is 84.8 mm (3.3 in) in 2000, marked on the chart; the median year is 38.8 mm (1.5 in).

Wettest day (Rx1day) at San Juan de Guadalupe (Dge) by year
Year	Wettest day (Rx1day)
1963	35.8 mm (1.4 in)
1964	42.9 mm (1.7 in)
1965	65.8 mm (2.6 in)
1966	22.9 mm (0.9 in)
1967	37.8 mm (1.5 in)
1968	43.9 mm (1.7 in)
1969	19.8 mm (0.8 in)
1970	27.9 mm (1.1 in)
1971	64.8 mm (2.6 in)
1972	54.9 mm (2.2 in)
1973	52.8 mm (2.1 in)
1974	31.8 mm (1.3 in)
1975	41.4 mm (1.6 in)
1976	57.9 mm (2.3 in)
1977	66.8 mm (2.6 in)
1978	83.8 mm (3.3 in)
1979	39.9 mm (1.6 in)
1980	34.8 mm (1.4 in)
1981	31.0 mm (1.2 in)
1982	31.8 mm (1.3 in)
1983	56.9 mm (2.2 in)
1984	61.5 mm (2.4 in)
1985	36.8 mm (1.4 in)
1986	50.8 mm (2.0 in)
1987	42.4 mm (1.7 in)
1988	33.8 mm (1.3 in)
1989	43.9 mm (1.7 in)
1990	2.8 mm (0.11 in)
1991	30.0 mm (1.2 in)
1992	48.3 mm (1.9 in)
1993	2.3 mm (0.09 in)
1994	40.9 mm (1.6 in)
1995	40.9 mm (1.6 in)
1996	34.8 mm (1.4 in)
1997	23.9 mm (0.9 in)
1998	50.8 mm (2.0 in)
1999	23.9 mm (0.9 in)
2000	84.8 mm (3.3 in)
2001	35.8 mm (1.4 in)
2002	9.4 mm (0.37 in)
2003	37.8 mm (1.5 in)
2004	59.9 mm (2.4 in)
2005	31.0 mm (1.2 in)
2006	46.5 mm (1.8 in)
2007	41.9 mm (1.6 in)
2008	53.8 mm (2.1 in)
2009	19.3 mm (0.8 in)
2010	26.4 mm (1.0 in)
2011	34.8 mm (1.4 in)
2012	30.0 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juan de Guadalupe (Dge), 1963 to 2012. The record is 196.0 mm (7.7 in) in 2000, marked on the chart; the median year is 63.2 mm (2.5 in).

Wettest five days (Rx5day) at San Juan de Guadalupe (Dge) by year
Year	Wettest five days (Rx5day)
1963	53.6 mm (2.1 in)
1964	103.6 mm (4.1 in)
1965	114.6 mm (4.5 in)
1966	64.3 mm (2.5 in)
1967	64.3 mm (2.5 in)
1968	91.9 mm (3.6 in)
1969	30.7 mm (1.2 in)
1970	42.7 mm (1.7 in)
1971	119.4 mm (4.7 in)
1972	92.0 mm (3.6 in)
1973	64.7 mm (2.5 in)
1974	41.5 mm (1.6 in)
1975	62.0 mm (2.4 in)
1976	101.5 mm (4.0 in)
1977	78.5 mm (3.1 in)
1978	115.5 mm (4.5 in)
1979	48.3 mm (1.9 in)
1980	79.8 mm (3.1 in)
1981	39.7 mm (1.6 in)
1982	40.5 mm (1.6 in)
1983	95.5 mm (3.8 in)
1984	99.7 mm (3.9 in)
1985	79.3 mm (3.1 in)
1986	64.3 mm (2.5 in)
1987	78.2 mm (3.1 in)
1988	46.0 mm (1.8 in)
1989	44.4 mm (1.7 in)
1990	4.9 mm (0.19 in)
1991	43.0 mm (1.7 in)
1992	81.2 mm (3.2 in)
1993	2.3 mm (0.09 in)
1994	52.6 mm (2.1 in)
1995	41.7 mm (1.6 in)
1996	71.4 mm (2.8 in)
1997	48.0 mm (1.9 in)
1998	92.5 mm (3.6 in)
1999	28.5 mm (1.1 in)
2000	196.0 mm (7.7 in)
2001	38.4 mm (1.5 in)
2002	10.2 mm (0.4 in)
2003	96.6 mm (3.8 in)
2004	96.2 mm (3.8 in)
2005	35.4 mm (1.4 in)
2006	58.0 mm (2.3 in)
2007	68.6 mm (2.7 in)
2008	113.2 mm (4.5 in)
2009	22.4 mm (0.9 in)
2010	49.5 mm (1.9 in)
2011	34.8 mm (1.4 in)
2012	54.6 mm (2.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juan de Guadalupe (Dge), 1963 to 2012. The record is 337 days in 1993, marked on the chart; the median year is 89 days.

Longest dry spell (CDD) at San Juan de Guadalupe (Dge) by year
Year	Longest dry spell (CDD)
1963	42 days
1964	113 days
1965	71 days
1966	48 days
1967	53 days
1968	80 days
1969	172 days
1970	89 days
1971	132 days
1972	148 days
1973	80 days
1974	116 days
1975	127 days
1976	94 days
1977	144 days
1978	83 days
1979	67 days
1980	139 days
1981	42 days
1982	56 days
1983	73 days
1984	104 days
1985	81 days
1986	81 days
1987	53 days
1988	95 days
1989	105 days
1990	35 days
1991	31 days
1992	89 days
1993	337 days
1994	105 days
1995	87 days
1996	122 days
1997	50 days
1998	112 days
1999	143 days
2000	39 days
2001	52 days
2002	68 days
2003	108 days
2004	45 days
2005	76 days
2006	107 days
2007	105 days
2008	137 days
2009	130 days
2010	96 days
2011	179 days
2012	72 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

46 years, 1964 to 2012

A day with at least 39.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 86.8 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juan de Guadalupe (Dge): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	39.8 mm (1.6 in)
5 years	55.1 mm (2.2 in)
10 years	64.0 mm (2.5 in)
25 years	74.1 mm (2.9 in)
50 years	80.7 mm (3.2 in)	Longer than the 46 years of record
100 years	86.8 mm (3.4 in)	Longer than the 46 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, 46 years of values from 1964 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: 84.8 mm (3.3 in) in 2000; 83.8 mm (3.3 in) in 1978; 66.8 mm (2.6 in) in 1977.

Download the Data

Data for San Juan de Guadalupe (Dge) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Juan de Guadalupe (Dge) 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 2026-10-16 (16 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).