Rio Hondo Weather Records (MXN00020277)

Record envelope, standing records and threshold days for Rio Hondo (MXN00020277), Mexico, with 35 years of record.

Key Facts for Rio Hondo

Rio Hondo (MXN00020277) is a weather station in Mexico at 16.47 latitude and -95.27 longitude, 477 m (1,564 ft) above sea level.
The station reports from 1977 to 2011, 35 years of record.
1,464 records set at Rio Hondo still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Rio Hondo tied a monthly record high maximum temperature of 36.7 C (98.1 F) on 25 December 2011.

About the Station

Location: Mexico, 16.47 latitude, -95.27 longitude.
Elevation: 477 m (1,564 ft).
Period of record: 1977 to 2011, 35 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 Rio Hondo. 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 Rio Hondo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.7 C (98.1 F)	8.9 C (48.0 F)	n/a	n/a
Feb	37.8 C (100.0 F)	2.2 C (36.0 F)	n/a	n/a
Mar	38.9 C (102.0 F)	10.6 C (51.1 F)	n/a	n/a
Apr	41.7 C (107.1 F)	12.8 C (55.0 F)	n/a	n/a
May	41.7 C (107.1 F)	15.0 C (59.0 F)	n/a	n/a
Jun	40.6 C (105.1 F)	13.9 C (57.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	15.6 C (60.1 F)	n/a	n/a
Aug	38.9 C (102.0 F)	18.9 C (66.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	16.7 C (62.1 F)	n/a	n/a
Oct	37.8 C (100.0 F)	11.7 C (53.1 F)	n/a	n/a
Nov	38.9 C (102.0 F)	8.9 C (48.0 F)	n/a	n/a
Dec	36.7 C (98.1 F)	7.8 C (46.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rio Hondo still stand. 1980 holds the most, with 102.

Standing records at Rio Hondo by the year they were set
Year set	Standing records
1977	79
1978	84
1979	76
1980	102
1981	69
1982	71
1983	48
1984	46
1985	33
1986	70
1987	26
1988	49
1989	56
1990	29
1991	28
1992	20
1993	19
1994	28
1995	8
1996	6
1997	9
1998	32
1999	28
2000	58
2001	21
2002	18
2003	26
2004	20
2005	30
2006	47
2007	30
2008	26
2009	45
2010	63
2011	64

Wettest Day of Each Month

Jul: 164.8 mm (6.5 in)

The wettest day on record for each calendar month at Rio Hondo. The most was 164.8 mm (6.5 in) on 5 July 1993.

Record daily precipitation for each month at Rio Hondo
Month	Record daily precipitation (mm)	Date
Jan	1.0 mm (0.04 in)	23 January 1979
Feb	33.8 mm (1.3 in)	25 February 1983
Mar	14.2 mm (0.6 in)	13 March 1983
Apr	48.3 mm (1.9 in)	24 April 1990
May	50.8 mm (2.0 in)	14 May 2004
Jun	159.8 mm (6.3 in)	18 June 1993
Jul	164.8 mm (6.5 in)	5 July 1993
Aug	134.9 mm (5.3 in)	5 August 1995
Sep	147.8 mm (5.8 in)	22 September 1978
Oct	78.5 mm (3.1 in)	7 October 1991
Nov	152.9 mm (6.0 in)	9 November 1997
Dec	15.7 mm (0.6 in)	30 December 1995

Period of Record Coverage

1977 to 2011

35 years of record at Rio Hondo, 1977 to 2011. 1 years have data for under 90 percent of days and are left out of rankings: 1993.

Days with data per year at Rio Hondo
Year	Days with data	Share of year	Complete
1977	358	98%	Yes
1978	363	99%	Yes
1979	334	92%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	364	100%	Yes
1984	364	99%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	363	99%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	304	83%	No
1994	365	100%	Yes
1995	364	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	364	99%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	364	100%	Yes
2010	365	100%	Yes
2011	364	100%	Yes

Latest Records

Latest records at Rio Hondo
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 December 2011	Rio Hondo, MX	monthly high max (Tie)	36.7 C (98.1 F)	tie	2 years	3 of 100 (Routine)
24 December 2011	Rio Hondo, MX	monthly high max (Tie)	36.7 C (98.1 F)	tie	2 years	3 of 100 (Routine)
23 December 2011	Rio Hondo, MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	24 years	12 of 100 (Routine)
21 December 2011	Rio Hondo, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	18 years	2 of 100 (Routine)
8 December 2011	Rio Hondo, MX	daily low min	10.0 C (50.0 F)	0.6 C (1.1 F)	5 years	6 of 100 (Routine)
7 December 2011	Rio Hondo, MX	daily low min	8.9 C (48.0 F)	1.7 C (3.1 F)	5 years	10 of 100 (Routine)
6 December 2011	Rio Hondo, MX	daily low min	8.9 C (48.0 F)	1.1 C (2.0 F)	5 years	8 of 100 (Routine)
5 December 2011	Rio Hondo, MX	daily low min	10.0 C (50.0 F)	1.7 C (3.1 F)	5 years	10 of 100 (Routine)
4 December 2011	Rio Hondo, MX	daily low min	10.0 C (50.0 F)	2.8 C (5.0 F)	8 years	16 of 100 (Routine)
3 December 2011	Rio Hondo, MX	daily low min	8.9 C (48.0 F)	1.7 C (3.1 F)	5 years	10 of 100 (Routine)
2 December 2011	Rio Hondo, MX	daily low min	8.9 C (48.0 F)	1.7 C (3.1 F)	5 years	10 of 100 (Routine)
1 December 2011	Rio Hondo, MX	monthly low min (Tie)	7.8 C (46.0 F)	tie	21 years	4 of 100 (Routine)
30 November 2011	Rio Hondo, MX	daily high max (Tie)	35.6 C (96.1 F)	tie	6 years	1 of 100 (Routine)
28 November 2011	Rio Hondo, MX	daily low min (Tie)	13.9 C (57.0 F)	tie	14 years	1 of 100 (Routine)
22 November 2011	Rio Hondo, MX	monthly high max	38.9 C (102.0 F)	1.1 C (2.0 F)	2 years	17 of 100 (Routine)
21 November 2011	Rio Hondo, MX	monthly high max (Tie)	37.8 C (100.0 F)	tie	2 years	3 of 100 (Routine)
20 November 2011	Rio Hondo, MX	monthly high max (Tie)	37.8 C (100.0 F)	tie	2 years	3 of 100 (Routine)
19 November 2011	Rio Hondo, MX	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	18 years	12 of 100 (Routine)
18 November 2011	Rio Hondo, MX	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	18 years	12 of 100 (Routine)
17 November 2011	Rio Hondo, MX	daily rain	2.5 mm (0.10 in)	2.2 mm (0.09 in)	32 years	14 of 100 (Routine)

Climate Trend

33 complete years, 1977 to 2011

One stripe for each of 33 complete years at Rio Hondo, 1977 to 2011. Blue stripes are years cooler than the station's own mean of 26.6 C (80.0 F); red stripes are warmer. The coolest year was 1989, at 25.5 C (77.9 F), and the warmest was 1986, at 27.2 C (80.9 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Rio Hondo as warming stripes, 1977 to 2011
Year	Annual mean temperature	Difference from the station mean
1977	27.1 C	+0.43 C
1978	26.8 C	+0.18 C
1980	26.8 C	+0.18 C
1981	26.3 C	-0.37 C
1982	27.0 C	+0.33 C
1983	26.9 C	+0.26 C
1984	26.0 C	-0.64 C
1985	26.9 C	+0.25 C
1986	27.2 C	+0.54 C
1987	26.4 C	-0.27 C
1988	25.7 C	-0.91 C
1989	25.5 C	-1.14 C
1990	26.9 C	+0.27 C
1991	26.9 C	+0.27 C
1992	27.0 C	+0.38 C
1994	26.9 C	+0.29 C
1995	26.9 C	+0.23 C
1996	26.7 C	+0.10 C
1997	27.0 C	+0.32 C
1998	27.1 C	+0.43 C
1999	26.3 C	-0.36 C
2000	25.9 C	-0.76 C
2001	27.1 C	+0.45 C
2002	26.6 C	-0.06 C
2003	26.4 C	-0.29 C
2004	26.6 C	-0.08 C
2005	26.5 C	-0.18 C
2006	26.9 C	+0.21 C
2007	26.9 C	+0.27 C
2008	26.4 C	-0.21 C
2009	26.5 C	-0.10 C
2010	26.2 C	-0.49 C
2011	27.1 C	+0.44 C

The fitted trend in annual mean temperature here over 1977 to 2011 is -0.03 C (-0.18 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.2) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Rio Hondo
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.03 C (-0.18 to 0.13) per decade	-0.1 F (-0.3 to 0.2) per decade	1977 to 2011	33	Not clearly different from zero
Mean daily maximum	0.5 C (0.3 to 0.7) per decade	0.9 F (0.5 to 1.3) per decade	1977 to 2011	33	Rise
Mean daily minimum	-0.6 C (-0.8 to -0.3) per decade	-1.0 F (-1.4 to -0.5) per decade	1977 to 2011	33	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

1977 to 2011

Yearly extremes at Rio Hondo: 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)	1986	38.9 C (102.0 F)	35
Coldest night (TNn)	2.2 C (36.0 F)	2000	10.6 C (51.1 F)	35
Wettest day (Rx1day)	164.8 mm (6.5 in)	1993	79.8 mm (3.1 in)	35
Wettest five days (Rx5day)	329.8 mm (13.0 in)	1993	141.8 mm (5.6 in)	35
Longest dry spell (CDD)	160 days	2011	105 days	35

Hottest day (TXx)

The hottest day of the year at Rio Hondo, 1977 to 2011. The record is 41.7 C (107.1 F) in 1986, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Rio Hondo by year
Year	Hottest day (TXx)
1977	38.9 C (102.0 F)
1978	40.0 C (104.0 F)
1979	38.9 C (102.0 F)
1980	38.9 C (102.0 F)
1981	38.9 C (102.0 F)
1982	37.8 C (100.0 F)
1983	40.6 C (105.1 F)
1984	36.7 C (98.1 F)
1985	38.9 C (102.0 F)
1986	41.7 C (107.1 F)
1987	38.9 C (102.0 F)
1988	37.8 C (100.0 F)
1989	38.9 C (102.0 F)
1990	40.0 C (104.0 F)
1991	37.8 C (100.0 F)
1992	37.8 C (100.0 F)
1993	36.7 C (98.1 F)
1994	37.8 C (100.0 F)
1995	36.7 C (98.1 F)
1996	36.7 C (98.1 F)
1997	37.8 C (100.0 F)
1998	38.9 C (102.0 F)
1999	38.9 C (102.0 F)
2000	38.9 C (102.0 F)
2001	37.8 C (100.0 F)
2002	38.9 C (102.0 F)
2003	40.0 C (104.0 F)
2004	38.9 C (102.0 F)
2005	40.0 C (104.0 F)
2006	38.9 C (102.0 F)
2007	38.9 C (102.0 F)
2008	40.6 C (105.1 F)
2009	40.0 C (104.0 F)
2010	41.7 C (107.1 F)
2011	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at Rio Hondo, 1977 to 2011. The record is 2.2 C (36.0 F) in 2000, marked on the chart; the median year is 10.6 C (51.1 F).

Coldest night (TNn) at Rio Hondo by year
Year	Coldest night (TNn)
1977	13.9 C (57.0 F)
1978	12.2 C (54.0 F)
1979	12.8 C (55.0 F)
1980	8.9 C (48.0 F)
1981	10.6 C (51.1 F)
1982	10.6 C (51.1 F)
1983	12.8 C (55.0 F)
1984	10.0 C (50.0 F)
1985	10.6 C (51.1 F)
1986	8.9 C (48.0 F)
1987	8.9 C (48.0 F)
1988	12.8 C (55.0 F)
1989	7.8 C (46.0 F)
1990	11.7 C (53.1 F)
1991	12.8 C (55.0 F)
1992	13.9 C (57.0 F)
1993	13.9 C (57.0 F)
1994	11.7 C (53.1 F)
1995	11.7 C (53.1 F)
1996	8.9 C (48.0 F)
1997	10.6 C (51.1 F)
1998	11.7 C (53.1 F)
1999	11.7 C (53.1 F)
2000	2.2 C (36.0 F)
2001	12.8 C (55.0 F)
2002	8.9 C (48.0 F)
2003	10.0 C (50.0 F)
2004	11.7 C (53.1 F)
2005	10.0 C (50.0 F)
2006	8.9 C (48.0 F)
2007	11.7 C (53.1 F)
2008	11.7 C (53.1 F)
2009	8.9 C (48.0 F)
2010	10.6 C (51.1 F)
2011	7.8 C (46.0 F)

Wettest day (Rx1day)

The wettest day of the year at Rio Hondo, 1977 to 2011. The record is 164.8 mm (6.5 in) in 1993, marked on the chart; the median year is 79.8 mm (3.1 in).

Wettest day (Rx1day) at Rio Hondo by year
Year	Wettest day (Rx1day)
1977	89.9 mm (3.5 in)
1978	147.8 mm (5.8 in)
1979	65.5 mm (2.6 in)
1980	69.1 mm (2.7 in)
1981	134.4 mm (5.3 in)
1982	45.0 mm (1.8 in)
1983	107.7 mm (4.2 in)
1984	77.7 mm (3.1 in)
1985	58.9 mm (2.3 in)
1986	96.8 mm (3.8 in)
1987	54.9 mm (2.2 in)
1988	93.2 mm (3.7 in)
1989	61.0 mm (2.4 in)
1990	64.8 mm (2.6 in)
1991	79.8 mm (3.1 in)
1992	82.8 mm (3.3 in)
1993	164.8 mm (6.5 in)
1994	58.2 mm (2.3 in)
1995	134.9 mm (5.3 in)
1996	83.8 mm (3.3 in)
1997	152.9 mm (6.0 in)
1998	81.8 mm (3.2 in)
1999	146.8 mm (5.8 in)
2000	84.8 mm (3.3 in)
2001	79.8 mm (3.1 in)
2002	79.8 mm (3.1 in)
2003	62.0 mm (2.4 in)
2004	63.8 mm (2.5 in)
2005	102.9 mm (4.1 in)
2006	40.4 mm (1.6 in)
2007	74.9 mm (2.9 in)
2008	151.9 mm (6.0 in)
2009	55.9 mm (2.2 in)
2010	74.9 mm (2.9 in)
2011	80.3 mm (3.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rio Hondo, 1977 to 2011. The record is 329.8 mm (13.0 in) in 1993, marked on the chart; the median year is 141.8 mm (5.6 in).

Wettest five days (Rx5day) at Rio Hondo by year
Year	Wettest five days (Rx5day)
1977	100.3 mm (3.9 in)
1978	280.4 mm (11.0 in)
1979	164.4 mm (6.5 in)
1980	107.2 mm (4.2 in)
1981	254.3 mm (10.0 in)
1982	83.2 mm (3.3 in)
1983	154.7 mm (6.1 in)
1984	119.5 mm (4.7 in)
1985	90.9 mm (3.6 in)
1986	198.2 mm (7.8 in)
1987	77.5 mm (3.1 in)
1988	127.6 mm (5.0 in)
1989	134.4 mm (5.3 in)
1990	91.0 mm (3.6 in)
1991	196.9 mm (7.8 in)
1992	128.1 mm (5.0 in)
1993	329.8 mm (13.0 in)
1994	85.6 mm (3.4 in)
1995	199.3 mm (7.8 in)
1996	165.9 mm (6.5 in)
1997	152.9 mm (6.0 in)
1998	209.4 mm (8.2 in)
1999	247.7 mm (9.8 in)
2000	129.5 mm (5.1 in)
2001	149.3 mm (5.9 in)
2002	94.2 mm (3.7 in)
2003	130.6 mm (5.1 in)
2004	68.1 mm (2.7 in)
2005	141.8 mm (5.6 in)
2006	105.5 mm (4.2 in)
2007	166.3 mm (6.5 in)
2008	303.4 mm (11.9 in)
2009	103.6 mm (4.1 in)
2010	237.5 mm (9.4 in)
2011	222.7 mm (8.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rio Hondo, 1977 to 2011. The record is 160 days in 2011, marked on the chart; the median year is 105 days.

Longest dry spell (CDD) at Rio Hondo by year
Year	Longest dry spell (CDD)
1977	114 days
1978	84 days
1979	83 days
1980	103 days
1981	114 days
1982	118 days
1983	78 days
1984	128 days
1985	71 days
1986	84 days
1987	93 days
1988	96 days
1989	52 days
1990	105 days
1991	128 days
1992	69 days
1993	97 days
1994	132 days
1995	80 days
1996	113 days
1997	110 days
1998	156 days
1999	156 days
2000	70 days
2001	144 days
2002	136 days
2003	84 days
2004	102 days
2005	74 days
2006	150 days
2007	146 days
2008	139 days
2009	129 days
2010	56 days
2011	160 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, 1977 to 2011

A day with at least 81.0 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 214.0 mm (8.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Rio Hondo: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	81.0 mm (3.2 in)
5 years	110.8 mm (4.4 in)
10 years	132.7 mm (5.2 in)
25 years	163.0 mm (6.4 in)
50 years	187.6 mm (7.4 in)	Longer than the 35 years of record
100 years	214.0 mm (8.4 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 1977 to 2011.

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: 164.8 mm (6.5 in) in 1993; 152.9 mm (6.0 in) in 1997; 151.9 mm (6.0 in) in 2008.

Download the Data

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