San Juanico Weather Records (MXN00003057)

Record envelope, standing records and threshold days for San Juanico (MXN00003057), Mexico, with 52 years of record.

Key Facts for San Juanico

San Juanico (MXN00003057) is a weather station in Mexico at 26.25 latitude and -112.47 longitude, 20 m (65 ft) above sea level.
The station reports from 1961 to 2012, 52 years of record.
1,464 records set at San Juanico still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
San Juanico set a daily record precipitation of 33.8 mm (1.3 in) on 16 October 2012.

About the Station

Location: Mexico, 26.25 latitude, -112.47 longitude.
Elevation: 20 m (65 ft).
Period of record: 1961 to 2012, 52 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 Juanico. 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 Juanico, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Feb	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Mar	36.7 C (98.1 F)	3.3 C (37.9 F)	n/a	n/a
Apr	38.3 C (100.9 F)	0.6 C (33.1 F)	n/a	n/a
May	40.6 C (105.1 F)	5.6 C (42.1 F)	n/a	n/a
Jun	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
Jul	45.6 C (114.1 F)	5.6 C (42.1 F)	n/a	n/a
Aug	41.7 C (107.1 F)	6.7 C (44.1 F)	n/a	n/a
Sep	40.6 C (105.1 F)	5.0 C (41.0 F)	n/a	n/a
Oct	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	2.8 C (37.0 F)	n/a	n/a
Dec	36.7 C (98.1 F)	1.1 C (34.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juanico still stand. 1965 holds the most, with 115.

Standing records at San Juanico by the year they were set
Year set	Standing records
1961	11
1962	16
1963	45
1964	57
1965	115
1966	21
1967	21
1968	6
1969	10
1970	14
1971	20
1972	47
1973	64
1974	27
1975	49
1976	23
1977	64
1978	36
1979	37
1980	55
1981	33
1982	9
1983	36
1984	24
1985	18
1986	26
1987	2
1988	26
1989	30
1990	14
1991	29
1992	15
1993	6
1994	6
1995	6
1996	8
1997	28
1998	7
1999	37
2000	46
2001	38
2002	43
2003	40
2004	15
2005	24
2006	23
2007	15
2008	35
2009	34
2010	16
2011	18
2012	19

All-Time Record Progression

5 new records

5 all-time records were set at San Juanico between 9 February 1997 and 2 October 2009. Each dot is a new record.

When San Juanico set new all-time records
Date	Kind	Detail
1997-02-09	Record low minimum temperature	Record low minimum temperature 1.1 C (34.0 F)
2001-01-28	Record low maximum temperature	Record low maximum temperature 10.6 C (51.1 F)
2006-01-22	Record low minimum temperature	Record low minimum temperature 0.0 C (32.0 F)
2009-10-01	Record daily precipitation	Record daily precipitation 84.8 mm (3.3 in)
2009-10-02	Record daily precipitation	Record daily precipitation 199.9 mm (7.9 in)

Wettest Day of Each Month

Oct: 199.9 mm (7.9 in)

The wettest day on record for each calendar month at San Juanico. The most was 199.9 mm (7.9 in) on 2 October 2009.

Record daily precipitation for each month at San Juanico
Month	Record daily precipitation (mm)	Date
Jan	47.0 mm (1.9 in)	23 January 1962
Feb	35.3 mm (1.4 in)	2 February 2010
Mar	38.9 mm (1.5 in)	1 March 1981
Apr	5.3 mm (0.21 in)	1 April 2003
May	0.0 mm (0.00 in)	1 May 1961
Jun	4.8 mm (0.19 in)	27 June 1999
Jul	49.3 mm (1.9 in)	16 July 1984
Aug	74.9 mm (2.9 in)	15 August 2012
Sep	62.0 mm (2.4 in)	29 September 2001
Oct	199.9 mm (7.9 in)	2 October 2009
Nov	66.8 mm (2.6 in)	12 November 2011
Dec	59.9 mm (2.4 in)	27 December 1972

Period of Record Coverage

1961 to 2012

52 years of record at San Juanico, 1961 to 2012. 9 years have data for under 90 percent of days and are left out of rankings: 1962, 1967, 1969, 1982, 1986, 1987, 1990, 2003 and others.

Days with data per year at San Juanico
Year	Days with data	Share of year	Complete
1961	335	92%	Yes
1962	304	83%	No
1963	365	100%	Yes
1964	365	100%	Yes
1965	334	92%	Yes
1966	334	92%	Yes
1967	304	83%	No
1968	335	92%	Yes
1969	181	50%	No
1970	335	92%	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	364	100%	Yes
1978	360	99%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	304	83%	No
1983	339	93%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	181	50%	No
1987	183	50%	No
1988	337	92%	Yes
1989	357	98%	Yes
1990	242	66%	No
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	350	96%	Yes
1995	360	99%	Yes
1996	348	95%	Yes
1997	333	91%	Yes
1998	354	97%	Yes
1999	358	98%	Yes
2000	360	98%	Yes
2001	348	95%	Yes
2002	343	94%	Yes
2003	322	88%	No
2004	365	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	344	94%	Yes
2008	303	83%	No
2009	363	99%	Yes
2010	363	99%	Yes
2011	365	100%	Yes
2012	333	91%	Yes

Latest Records

Latest records at San Juanico
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 October 2012	San Juanico, MX	daily rain	33.8 mm (1.3 in)	33.8 mm (1.3 in)	51 years	53 of 100 (Notable)
15 October 2012	San Juanico, MX	daily rain	154.9 mm (6.1 in)	153.1 mm (6.0 in)	18 years	50 of 100 (Notable)
27 September 2012	San Juanico, MX	daily rain	45.0 mm (1.8 in)	34.1 mm (1.3 in)	11 years	31 of 100 (Routine)
26 September 2012	San Juanico, MX	daily rain	10.4 mm (0.4 in)	10.4 mm (0.4 in)	51 years	20 of 100 (Routine)
15 September 2012	San Juanico, MX	daily high max	37.8 C (100.0 F)	2.8 C (5.0 F)	31 years	23 of 100 (Routine)
15 September 2012	San Juanico, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	29 years	3 of 100 (Routine)
14 September 2012	San Juanico, MX	daily high max (Tie)	37.8 C (100.0 F)	tie	31 years	3 of 100 (Routine)
13 September 2012	San Juanico, MX	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	8 years	10 of 100 (Routine)
10 September 2012	San Juanico, MX	daily high max	36.1 C (97.0 F)	0.5 C (0.9 F)	7 years	8 of 100 (Routine)
3 September 2012	San Juanico, MX	daily high max	37.2 C (99.0 F)	1.1 C (2.0 F)	2 years	8 of 100 (Routine)
2 September 2012	San Juanico, MX	daily high max	37.8 C (100.0 F)	0.6 C (1.1 F)	5 years	7 of 100 (Routine)
2 September 2012	San Juanico, MX	daily high min	26.1 C (79.0 F)	0.5 C (0.9 F)	6 years	7 of 100 (Routine)
1 September 2012	San Juanico, MX	daily rain	34.8 mm (1.4 in)	31.0 mm (1.2 in)	45 years	39 of 100 (Notable)
30 August 2012	San Juanico, MX	daily high max	40.0 C (104.0 F)	2.2 C (4.0 F)	5 years	13 of 100 (Routine)
30 August 2012	San Juanico, MX	daily high min (Tie)	24.4 C (75.9 F)	tie	22 years	2 of 100 (Routine)
24 August 2012	San Juanico, MX	daily high min	25.0 C (77.0 F)	1.1 C (2.0 F)	45 years	20 of 100 (Routine)
17 August 2012	San Juanico, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	4 years	1 of 100 (Routine)
16 August 2012	San Juanico, MX	daily rain	45.0 mm (1.8 in)	18.1 mm (0.7 in)	16 years	18 of 100 (Routine)
15 August 2012	San Juanico, MX	daily high max	38.3 C (100.9 F)	3.3 C (5.9 F)	27 years	23 of 100 (Routine)
15 August 2012	San Juanico, MX	monthly rain	74.9 mm (2.9 in)	5.0 mm (0.20 in)	19 years	22 of 100 (Routine)

Climate Trend

32 complete years, 1963 to 2011

One stripe for each of 32 complete years at San Juanico, 1963 to 2011. Blue stripes are years cooler than the station's own mean of 19.4 C (66.9 F); red stripes are warmer. The coolest year was 1975, at 17.1 C (62.7 F), and the warmest was 1980, at 22.4 C (72.2 F). The strongest colour marks a difference of 3.0 C (5.4 F).

Annual mean temperature at San Juanico as warming stripes, 1963 to 2011
Year	Annual mean temperature	Difference from the station mean
1963	21.2 C	+1.82 C
1964	21.7 C	+2.29 C
1971	19.2 C	-0.21 C
1972	17.8 C	-1.60 C
1973	18.5 C	-0.91 C
1974	18.8 C	-0.60 C
1975	17.1 C	-2.33 C
1976	18.5 C	-0.95 C
1977	18.2 C	-1.22 C
1978	18.6 C	-0.79 C
1979	19.7 C	+0.29 C
1980	22.4 C	+2.96 C
1981	20.9 C	+1.53 C
1984	20.3 C	+0.87 C
1985	19.5 C	+0.11 C
1989	19.1 C	-0.33 C
1991	18.6 C	-0.77 C
1992	20.1 C	+0.65 C
1993	19.4 C	-0.03 C
1995	18.9 C	-0.49 C
1998	19.2 C	-0.25 C
1999	17.6 C	-1.83 C
2000	17.6 C	-1.81 C
2002	17.2 C	-2.19 C
2003	18.4 C	-1.05 C
2004	20.2 C	+0.82 C
2005	20.4 C	+1.02 C
2006	20.0 C	+0.63 C
2007	19.7 C	+0.25 C
2009	21.6 C	+2.17 C
2010	20.3 C	+0.93 C
2011	20.4 C	+0.97 C

The fitted trend in annual mean temperature here over 1963 to 2011 is 0.02 C (-0.32 to 0.37) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.04 F (-0.58 to 0.66) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Juanico
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.02 C (-0.32 to 0.37) per decade	0.04 F (-0.58 to 0.66) per decade	1963 to 2011	32	Not clearly different from zero
Mean daily maximum	-0.3 C (-0.8 to 0.2) per decade	-0.6 F (-1.5 to 0.3) per decade	1963 to 2011	32	Not clearly different from zero
Mean daily minimum	0.37 C (-0.05 to 0.79) per decade	0.7 F (-0.1 to 1.4) per decade	1963 to 2011	32	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

1961 to 2012

Yearly extremes at San Juanico: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	1980	37.5 C (99.5 F)	52
Coldest night (TNn)	0.0 C (32.0 F)	2006	4.2 C (39.5 F)	52
Wettest day (Rx1day)	199.9 mm (7.9 in)	2009	19.8 mm (0.8 in)	52
Wettest five days (Rx5day)	284.7 mm (11.2 in)	2009	28.2 mm (1.1 in)	52
Longest dry spell (CDD)	365 days	1963	187 days	52

Hottest day (TXx)

The hottest day of the year at San Juanico, 1961 to 2012. The record is 45.6 C (114.1 F) in 1980, marked on the chart; the median year is 37.5 C (99.5 F).

Hottest day (TXx) at San Juanico by year
Year	Hottest day (TXx)
1961	35.0 C (95.0 F)
1962	38.9 C (102.0 F)
1963	37.8 C (100.0 F)
1964	38.9 C (102.0 F)
1965	38.3 C (100.9 F)
1966	38.9 C (102.0 F)
1967	40.6 C (105.1 F)
1968	35.0 C (95.0 F)
1969	38.9 C (102.0 F)
1970	36.7 C (98.1 F)
1971	38.9 C (102.0 F)
1972	36.7 C (98.1 F)
1973	35.0 C (95.0 F)
1974	33.9 C (93.0 F)
1975	33.9 C (93.0 F)
1976	35.6 C (96.1 F)
1977	38.9 C (102.0 F)
1978	38.9 C (102.0 F)
1979	38.9 C (102.0 F)
1980	45.6 C (114.1 F)
1981	37.8 C (100.0 F)
1982	40.0 C (104.0 F)
1983	37.2 C (99.0 F)
1984	35.6 C (96.1 F)
1985	35.6 C (96.1 F)
1986	37.2 C (99.0 F)
1987	38.9 C (102.0 F)
1988	33.9 C (93.0 F)
1989	35.0 C (95.0 F)
1990	39.4 C (102.9 F)
1991	34.4 C (93.9 F)
1992	37.8 C (100.0 F)
1993	34.4 C (93.9 F)
1994	35.0 C (95.0 F)
1995	36.1 C (97.0 F)
1996	35.0 C (95.0 F)
1997	35.0 C (95.0 F)
1998	35.0 C (95.0 F)
1999	32.2 C (90.0 F)
2000	35.0 C (95.0 F)
2001	32.8 C (91.0 F)
2002	32.8 C (91.0 F)
2003	33.9 C (93.0 F)
2004	38.3 C (100.9 F)
2005	41.7 C (107.1 F)
2006	38.9 C (102.0 F)
2007	38.9 C (102.0 F)
2008	38.3 C (100.9 F)
2009	40.6 C (105.1 F)
2010	38.9 C (102.0 F)
2011	37.8 C (100.0 F)
2012	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at San Juanico, 1961 to 2012. The record is 0.0 C (32.0 F) in 2006, marked on the chart; the median year is 4.2 C (39.5 F).

Coldest night (TNn) at San Juanico by year
Year	Coldest night (TNn)
1961	5.6 C (42.1 F)
1962	5.0 C (41.0 F)
1963	6.7 C (44.1 F)
1964	5.6 C (42.1 F)
1965	5.6 C (42.1 F)
1966	4.4 C (39.9 F)
1967	5.0 C (41.0 F)
1968	5.0 C (41.0 F)
1969	5.6 C (42.1 F)
1970	7.2 C (45.0 F)
1971	5.0 C (41.0 F)
1972	2.8 C (37.0 F)
1973	5.0 C (41.0 F)
1974	5.0 C (41.0 F)
1975	3.9 C (39.0 F)
1976	3.9 C (39.0 F)
1977	5.6 C (42.1 F)
1978	3.9 C (39.0 F)
1979	3.9 C (39.0 F)
1980	5.0 C (41.0 F)
1981	7.8 C (46.0 F)
1982	2.8 C (37.0 F)
1983	5.6 C (42.1 F)
1984	6.7 C (44.1 F)
1985	5.0 C (41.0 F)
1986	5.6 C (42.1 F)
1987	5.6 C (42.1 F)
1988	2.2 C (36.0 F)
1989	3.9 C (39.0 F)
1990	3.9 C (39.0 F)
1991	4.4 C (39.9 F)
1992	5.0 C (41.0 F)
1993	5.0 C (41.0 F)
1994	5.0 C (41.0 F)
1995	3.3 C (37.9 F)
1996	2.8 C (37.0 F)
1997	1.1 C (34.0 F)
1998	3.9 C (39.0 F)
1999	2.2 C (36.0 F)
2000	2.2 C (36.0 F)
2001	2.2 C (36.0 F)
2002	2.8 C (37.0 F)
2003	2.2 C (36.0 F)
2004	2.2 C (36.0 F)
2005	3.3 C (37.9 F)
2006	0.0 C (32.0 F)
2007	0.6 C (33.1 F)
2008	0.6 C (33.1 F)
2009	3.3 C (37.9 F)
2010	3.3 C (37.9 F)
2011	1.7 C (35.1 F)
2012	5.0 C (41.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Juanico, 1961 to 2012. The record is 199.9 mm (7.9 in) in 2009, marked on the chart; the median year is 19.8 mm (0.8 in).

Wettest day (Rx1day) at San Juanico by year
Year	Wettest day (Rx1day)
1961	19.8 mm (0.8 in)
1962	47.0 mm (1.9 in)
1963	0.3 mm (0.01 in)
1964	3.3 mm (0.13 in)
1965	7.9 mm (0.31 in)
1966	9.9 mm (0.39 in)
1967	38.9 mm (1.5 in)
1968	7.4 mm (0.29 in)
1969	19.8 mm (0.8 in)
1970	18.8 mm (0.7 in)
1971	4.8 mm (0.19 in)
1972	59.9 mm (2.4 in)
1973	16.8 mm (0.7 in)
1974	9.4 mm (0.37 in)
1975	0.0 mm (0.00 in)
1976	15.5 mm (0.6 in)
1977	19.8 mm (0.8 in)
1978	19.8 mm (0.8 in)
1979	19.8 mm (0.8 in)
1980	19.8 mm (0.8 in)
1981	38.9 mm (1.5 in)
1982	12.4 mm (0.5 in)
1983	28.4 mm (1.1 in)
1984	49.3 mm (1.9 in)
1985	41.4 mm (1.6 in)
1986	0.0 mm (0.00 in)
1987	4.8 mm (0.19 in)
1988	9.9 mm (0.39 in)
1989	23.9 mm (0.9 in)
1990	50.8 mm (2.0 in)
1991	32.8 mm (1.3 in)
1992	69.9 mm (2.8 in)
1993	65.3 mm (2.6 in)
1994	52.8 mm (2.1 in)
1995	19.8 mm (0.8 in)
1996	26.9 mm (1.1 in)
1997	12.4 mm (0.5 in)
1998	7.9 mm (0.31 in)
1999	4.8 mm (0.19 in)
2000	9.9 mm (0.39 in)
2001	62.0 mm (2.4 in)
2002	17.3 mm (0.7 in)
2003	68.8 mm (2.7 in)
2004	14.5 mm (0.6 in)
2005	22.9 mm (0.9 in)
2006	49.8 mm (2.0 in)
2007	19.8 mm (0.8 in)
2008	39.9 mm (1.6 in)
2009	199.9 mm (7.9 in)
2010	41.9 mm (1.6 in)
2011	66.8 mm (2.6 in)
2012	154.9 mm (6.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juanico, 1961 to 2012. The record is 284.7 mm (11.2 in) in 2009, marked on the chart; the median year is 28.2 mm (1.1 in).

Wettest five days (Rx5day) at San Juanico by year
Year	Wettest five days (Rx5day)
1961	33.5 mm (1.3 in)
1962	53.9 mm (2.1 in)
1963	0.3 mm (0.01 in)
1964	5.6 mm (0.22 in)
1965	10.2 mm (0.4 in)
1966	9.9 mm (0.39 in)
1967	43.5 mm (1.7 in)
1968	7.4 mm (0.29 in)
1969	24.6 mm (1.0 in)
1970	35.1 mm (1.4 in)
1971	4.8 mm (0.19 in)
1972	59.9 mm (2.4 in)
1973	28.7 mm (1.1 in)
1974	12.7 mm (0.5 in)
1975	0.0 mm (0.00 in)
1976	15.8 mm (0.6 in)
1977	39.6 mm (1.6 in)
1978	22.6 mm (0.9 in)
1979	27.7 mm (1.1 in)
1980	26.7 mm (1.1 in)
1981	45.5 mm (1.8 in)
1982	12.4 mm (0.5 in)
1983	40.3 mm (1.6 in)
1984	69.9 mm (2.8 in)
1985	41.4 mm (1.6 in)
1986	0.0 mm (0.00 in)
1987	4.8 mm (0.19 in)
1988	10.7 mm (0.4 in)
1989	23.9 mm (0.9 in)
1990	59.4 mm (2.3 in)
1991	43.7 mm (1.7 in)
1992	69.9 mm (2.8 in)
1993	65.3 mm (2.6 in)
1994	60.4 mm (2.4 in)
1995	25.6 mm (1.0 in)
1996	26.9 mm (1.1 in)
1997	25.9 mm (1.0 in)
1998	7.9 mm (0.31 in)
1999	4.8 mm (0.19 in)
2000	9.9 mm (0.39 in)
2001	72.9 mm (2.9 in)
2002	18.6 mm (0.7 in)
2003	110.2 mm (4.3 in)
2004	20.3 mm (0.8 in)
2005	32.8 mm (1.3 in)
2006	49.8 mm (2.0 in)
2007	39.6 mm (1.6 in)
2008	67.3 mm (2.6 in)
2009	284.7 mm (11.2 in)
2010	41.9 mm (1.6 in)
2011	76.7 mm (3.0 in)
2012	188.7 mm (7.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juanico, 1961 to 2012. The record is 365 days in 1963, marked on the chart; the median year is 187 days.

Longest dry spell (CDD) at San Juanico by year
Year	Longest dry spell (CDD)
1961	132 days
1962	157 days
1963	365 days
1964	211 days
1965	153 days
1966	120 days
1967	234 days
1968	145 days
1969	44 days
1970	125 days
1971	212 days
1972	265 days
1973	313 days
1974	237 days
1975	365 days
1976	197 days
1977	142 days
1978	205 days
1979	341 days
1980	172 days
1981	126 days
1982	200 days
1983	124 days
1984	165 days
1985	259 days
1986	120 days
1987	61 days
1988	282 days
1989	302 days
1990	137 days
1991	159 days
1992	148 days
1993	186 days
1994	219 days
1995	188 days
1996	213 days
1997	212 days
1998	133 days
1999	177 days
2000	193 days
2001	159 days
2002	250 days
2003	100 days
2004	183 days
2005	232 days
2006	244 days
2007	84 days
2008	49 days
2009	222 days
2010	156 days
2011	201 days
2012	189 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

45 years, 1961 to 2012

A day with at least 22.3 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 196.5 mm (7.7 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juanico: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	22.3 mm (0.9 in)
5 years	46.9 mm (1.8 in)
10 years	69.6 mm (2.7 in)
25 years	108.5 mm (4.3 in)
50 years	147.2 mm (5.8 in)	Longer than the 45 years of record
100 years	196.5 mm (7.7 in)	Longer than the 45 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, 45 years of values from 1961 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: 199.9 mm (7.9 in) in 2009; 154.9 mm (6.1 in) in 2012; 69.9 mm (2.8 in) in 1992.

Download the Data

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