San Juan Bautista Tuxtepec I Weather Records (MXN00020172)

Record envelope, standing records and threshold days for San Juan Bautista Tuxtepec I (MXN00020172), Mexico, with 36 years of record.

Key Facts for San Juan Bautista Tuxtepec I

San Juan Bautista Tuxtepec I (MXN00020172) is a weather station in Mexico at 18.10 latitude and -96.12 longitude, 26 m (85 ft) above sea level.
The station reports from 1950 to 1985, 36 years of record.
1,464 records set at San Juan Bautista Tuxtepec I still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
San Juan Bautista Tuxtepec I set a daily record high minimum temperature of 21.1 C (70.0 F) on 24 February 1985.

About the Station

Location: Mexico, 18.10 latitude, -96.12 longitude.
Elevation: 26 m (85 ft).
Period of record: 1950 to 1985, 36 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 Bautista Tuxtepec I. 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 Bautista Tuxtepec I, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	34.4 C (93.9 F)	6.7 C (44.1 F)	n/a	n/a
Feb	37.2 C (99.0 F)	2.8 C (37.0 F)	n/a	n/a
Mar	40.6 C (105.1 F)	10.0 C (50.0 F)	n/a	n/a
Apr	41.7 C (107.1 F)	11.7 C (53.1 F)	n/a	n/a
May	43.9 C (111.0 F)	11.7 C (53.1 F)	n/a	n/a
Jun	40.6 C (105.1 F)	11.7 C (53.1 F)	n/a	n/a
Jul	37.8 C (100.0 F)	16.7 C (62.1 F)	n/a	n/a
Aug	37.2 C (99.0 F)	16.7 C (62.1 F)	n/a	n/a
Sep	36.7 C (98.1 F)	16.1 C (61.0 F)	n/a	n/a
Oct	36.7 C (98.1 F)	12.2 C (54.0 F)	n/a	n/a
Nov	35.0 C (95.0 F)	7.8 C (46.0 F)	n/a	n/a
Dec	33.3 C (91.9 F)	7.2 C (45.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juan Bautista Tuxtepec I still stand. 1966 holds the most, with 149.

Standing records at San Juan Bautista Tuxtepec I by the year they were set
Year set	Standing records
1950	4
1951	61
1952	42
1953	67
1954	46
1955	74
1956	30
1957	66
1958	71
1959	59
1960	59
1961	37
1962	57
1963	43
1964	105
1965	112
1966	149
1967	51
1968	19
1969	26
1970	27
1971	16
1972	20
1973	17
1974	12
1975	17
1976	21
1977	24
1978	11
1979	13
1980	31
1981	11
1982	12
1983	27
1984	25
1985	2

Wettest Day of Each Month

Jul: 341.9 mm (13.5 in)

The wettest day on record for each calendar month at San Juan Bautista Tuxtepec I. The most was 341.9 mm (13.5 in) on 9 July 1956.

Record daily precipitation for each month at San Juan Bautista Tuxtepec I
Month	Record daily precipitation (mm)	Date
Jan	58.4 mm (2.3 in)	15 January 1971
Feb	57.4 mm (2.3 in)	6 February 1975
Mar	65.3 mm (2.6 in)	29 March 1969
Apr	79.8 mm (3.1 in)	17 April 1960
May	99.8 mm (3.9 in)	29 May 1973
Jun	173.2 mm (6.8 in)	16 June 1974
Jul	341.9 mm (13.5 in)	9 July 1956
Aug	149.9 mm (5.9 in)	14 August 1979
Sep	154.9 mm (6.1 in)	24 September 1980
Oct	156.0 mm (6.1 in)	11 October 1966
Nov	63.2 mm (2.5 in)	7 November 1972
Dec	71.1 mm (2.8 in)	14 December 1981

Period of Record Coverage

1950 to 1985

36 years of record at San Juan Bautista Tuxtepec I, 1950 to 1985. 2 years have data for under 90 percent of days and are left out of rankings: 1950, 1985.

Days with data per year at San Juan Bautista Tuxtepec I
Year	Days with data	Share of year	Complete
1950	47	13%	No
1951	362	99%	Yes
1952	363	99%	Yes
1953	362	99%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	364	100%	Yes
1958	364	100%	Yes
1959	362	99%	Yes
1960	365	100%	Yes
1961	363	99%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	332	91%	Yes
1968	364	99%	Yes
1969	362	99%	Yes
1970	363	99%	Yes
1971	364	100%	Yes
1972	364	99%	Yes
1973	362	99%	Yes
1974	364	100%	Yes
1975	365	100%	Yes
1976	364	99%	Yes
1977	365	100%	Yes
1978	335	92%	Yes
1979	364	100%	Yes
1980	360	98%	Yes
1981	362	99%	Yes
1982	362	99%	Yes
1983	361	99%	Yes
1984	362	99%	Yes
1985	28	8%	No

Latest Records

Latest records at San Juan Bautista Tuxtepec I
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 February 1985	San Juan Bautista Tuxtepec I, MX	daily high min	21.1 C (70.0 F)	0.5 C (0.9 F)	27 years	12 of 100 (Routine)
23 February 1985	San Juan Bautista Tuxtepec I, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	16 years	1 of 100 (Routine)
12 February 1985	San Juan Bautista Tuxtepec I, MX	daily low max	17.8 C (64.0 F)	0.5 C (0.9 F)	2 years	4 of 100 (Routine)
27 December 1984	San Juan Bautista Tuxtepec I, MX	daily rain	17.8 mm (0.7 in)	8.1 mm (0.32 in)	33 years	19 of 100 (Routine)
25 December 1984	San Juan Bautista Tuxtepec I, MX	daily rain	60.5 mm (2.4 in)	50.6 mm (2.0 in)	9 years	45 of 100 (Notable)
21 November 1984	San Juan Bautista Tuxtepec I, MX	daily low max (Tie)	20.6 C (69.1 F)	tie	8 years	1 of 100 (Routine)
11 November 1984	San Juan Bautista Tuxtepec I, MX	daily rain	20.1 mm (0.8 in)	0.3 mm (0.01 in)	11 years	6 of 100 (Routine)
29 October 1984	San Juan Bautista Tuxtepec I, MX	daily rain	51.3 mm (2.0 in)	42.4 mm (1.7 in)	9 years	24 of 100 (Routine)
23 October 1984	San Juan Bautista Tuxtepec I, MX	daily rain	62.0 mm (2.4 in)	30.5 mm (1.2 in)	29 years	25 of 100 (Routine)
23 October 1984	San Juan Bautista Tuxtepec I, MX	daily high min	23.9 C (75.0 F)	1.1 C (2.0 F)	33 years	17 of 100 (Routine)
22 October 1984	San Juan Bautista Tuxtepec I, MX	daily high min	23.3 C (73.9 F)	0.5 C (0.9 F)	31 years	14 of 100 (Routine)
20 October 1984	San Juan Bautista Tuxtepec I, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	24 years	2 of 100 (Routine)
18 October 1984	San Juan Bautista Tuxtepec I, MX	daily high min (Tie)	23.3 C (73.9 F)	tie	26 years	2 of 100 (Routine)
1 October 1984	San Juan Bautista Tuxtepec I, MX	daily low max	21.7 C (71.1 F)	3.3 C (5.9 F)	31 years	22 of 100 (Routine)
16 September 1984	San Juan Bautista Tuxtepec I, MX	daily low max	26.1 C (79.0 F)	1.1 C (2.0 F)	10 years	10 of 100 (Routine)
15 September 1984	San Juan Bautista Tuxtepec I, MX	daily low max	25.6 C (78.1 F)	1.1 C (2.0 F)	9 years	9 of 100 (Routine)
12 September 1984	San Juan Bautista Tuxtepec I, MX	daily low max	25.0 C (77.0 F)	2.2 C (4.0 F)	19 years	16 of 100 (Routine)
11 September 1984	San Juan Bautista Tuxtepec I, MX	daily low max (Tie)	25.0 C (77.0 F)	tie	15 years	1 of 100 (Routine)
5 September 1984	San Juan Bautista Tuxtepec I, MX	daily rain	127.3 mm (5.0 in)	56.7 mm (2.2 in)	15 years	28 of 100 (Routine)
15 August 1984	San Juan Bautista Tuxtepec I, MX	daily low max (Tie)	25.0 C (77.0 F)	tie	19 years	2 of 100 (Routine)

Climate Trend

31 complete years, 1951 to 1984

One stripe for each of 31 complete years at San Juan Bautista Tuxtepec I, 1951 to 1984. Blue stripes are years cooler than the station's own mean of 24.8 C (76.6 F); red stripes are warmer. The coolest year was 1966, at 21.0 C (69.8 F), and the warmest was 1957, at 26.2 C (79.2 F). The strongest colour marks a difference of 3.8 C (6.8 F).

Annual mean temperature at San Juan Bautista Tuxtepec I as warming stripes, 1951 to 1984
Year	Annual mean temperature	Difference from the station mean
1951	25.3 C	+0.49 C
1952	25.3 C	+0.49 C
1953	26.0 C	+1.20 C
1954	25.4 C	+0.58 C
1955	25.9 C	+1.14 C
1956	25.3 C	+0.46 C
1957	26.2 C	+1.41 C
1958	25.8 C	+0.98 C
1959	25.6 C	+0.78 C
1960	25.5 C	+0.75 C
1961	25.8 C	+0.99 C
1962	26.2 C	+1.39 C
1963	25.8 C	+1.04 C
1965	22.6 C	-2.19 C
1966	21.0 C	-3.80 C
1968	24.7 C	-0.10 C
1969	25.2 C	+0.40 C
1970	24.4 C	-0.41 C
1971	24.5 C	-0.26 C
1972	24.7 C	-0.05 C
1973	24.3 C	-0.50 C
1974	24.4 C	-0.41 C
1975	24.6 C	-0.24 C
1976	23.7 C	-1.13 C
1977	24.2 C	-0.56 C
1979	24.1 C	-0.71 C
1980	24.2 C	-0.55 C
1981	24.1 C	-0.69 C
1982	24.7 C	-0.05 C
1983	24.9 C	+0.10 C
1984	24.1 C	-0.66 C

The annual mean temperature here has fallen by 0.5 C (0.2 to 0.9) per decade over 1951 to 1984. In Fahrenheit: 0.9 F (0.3 to 1.6) 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 San Juan Bautista Tuxtepec I
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.5 C (-0.9 to -0.2) per decade	-0.9 F (-1.6 to -0.3) per decade	1951 to 1984	31	Fall
Mean daily maximum	-0.9 C (-1.3 to -0.5) per decade	-1.6 F (-2.3 to -0.9) per decade	1951 to 1984	31	Fall
Mean daily minimum	-0.1 C (-0.5 to 0.2) per decade	-0.3 F (-0.9 to 0.4) per decade	1951 to 1984	31	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

1950 to 1985

Yearly extremes at San Juan Bautista Tuxtepec I: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1955	40.0 C (104.0 F)	36
Coldest night (TNn)	2.8 C (37.0 F)	1967	11.7 C (53.1 F)	36
Wettest day (Rx1day)	341.9 mm (13.5 in)	1956	121.5 mm (4.8 in)	36
Wettest five days (Rx5day)	494.8 mm (19.5 in)	1956	252.6 mm (9.9 in)	36
Longest dry spell (CDD)	51 days	1958	33 days	36

Hottest day (TXx)

The hottest day of the year at San Juan Bautista Tuxtepec I, 1950 to 1985. The record is 43.9 C (111.0 F) in 1955, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at San Juan Bautista Tuxtepec I by year
Year	Hottest day (TXx)
1950	31.7 C (89.1 F)
1951	40.0 C (104.0 F)
1952	40.0 C (104.0 F)
1953	41.7 C (107.1 F)
1954	40.6 C (105.1 F)
1955	43.9 C (111.0 F)
1956	38.9 C (102.0 F)
1957	41.7 C (107.1 F)
1958	41.7 C (107.1 F)
1959	37.8 C (100.0 F)
1960	40.6 C (105.1 F)
1961	41.1 C (106.0 F)
1962	41.1 C (106.0 F)
1963	40.0 C (104.0 F)
1964	40.0 C (104.0 F)
1965	37.8 C (100.0 F)
1966	33.9 C (93.0 F)
1967	40.0 C (104.0 F)
1968	40.0 C (104.0 F)
1969	40.0 C (104.0 F)
1970	40.0 C (104.0 F)
1971	40.0 C (104.0 F)
1972	38.3 C (100.9 F)
1973	40.0 C (104.0 F)
1974	40.0 C (104.0 F)
1975	39.4 C (102.9 F)
1976	37.2 C (99.0 F)
1977	39.4 C (102.9 F)
1978	38.9 C (102.0 F)
1979	37.8 C (100.0 F)
1980	38.9 C (102.0 F)
1981	37.8 C (100.0 F)
1982	36.7 C (98.1 F)
1983	39.4 C (102.9 F)
1984	39.4 C (102.9 F)
1985	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at San Juan Bautista Tuxtepec I, 1950 to 1985. The record is 2.8 C (37.0 F) in 1967, marked on the chart; the median year is 11.7 C (53.1 F).

Coldest night (TNn) at San Juan Bautista Tuxtepec I by year
Year	Coldest night (TNn)
1950	13.3 C (55.9 F)
1951	8.9 C (48.0 F)
1952	11.1 C (52.0 F)
1953	11.7 C (53.1 F)
1954	10.6 C (51.1 F)
1955	12.8 C (55.0 F)
1956	10.6 C (51.1 F)
1957	11.7 C (53.1 F)
1958	11.7 C (53.1 F)
1959	13.9 C (57.0 F)
1960	9.4 C (48.9 F)
1961	11.7 C (53.1 F)
1962	10.0 C (50.0 F)
1963	11.7 C (53.1 F)
1964	11.7 C (53.1 F)
1965	8.9 C (48.0 F)
1966	7.2 C (45.0 F)
1967	2.8 C (37.0 F)
1968	11.7 C (53.1 F)
1969	13.9 C (57.0 F)
1970	11.7 C (53.1 F)
1971	11.7 C (53.1 F)
1972	12.2 C (54.0 F)
1973	10.6 C (51.1 F)
1974	12.2 C (54.0 F)
1975	12.8 C (55.0 F)
1976	10.6 C (51.1 F)
1977	10.0 C (50.0 F)
1978	11.7 C (53.1 F)
1979	10.0 C (50.0 F)
1980	11.1 C (52.0 F)
1981	11.1 C (52.0 F)
1982	11.7 C (53.1 F)
1983	10.0 C (50.0 F)
1984	10.0 C (50.0 F)
1985	13.9 C (57.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Juan Bautista Tuxtepec I, 1950 to 1985. The record is 341.9 mm (13.5 in) in 1956, marked on the chart; the median year is 121.5 mm (4.8 in).

Wettest day (Rx1day) at San Juan Bautista Tuxtepec I by year
Year	Wettest day (Rx1day)
1950	30.0 mm (1.2 in)
1951	122.2 mm (4.8 in)
1952	119.9 mm (4.7 in)
1953	103.9 mm (4.1 in)
1954	101.9 mm (4.0 in)
1955	120.7 mm (4.8 in)
1956	341.9 mm (13.5 in)
1957	117.9 mm (4.6 in)
1958	156.0 mm (6.1 in)
1959	112.8 mm (4.4 in)
1960	163.8 mm (6.4 in)
1961	153.2 mm (6.0 in)
1962	156.5 mm (6.2 in)
1963	115.1 mm (4.5 in)
1964	142.2 mm (5.6 in)
1965	105.4 mm (4.1 in)
1966	156.0 mm (6.1 in)
1967	119.9 mm (4.7 in)
1968	119.9 mm (4.7 in)
1969	132.8 mm (5.2 in)
1970	148.6 mm (5.9 in)
1971	120.1 mm (4.7 in)
1972	94.0 mm (3.7 in)
1973	99.8 mm (3.9 in)
1974	173.2 mm (6.8 in)
1975	110.0 mm (4.3 in)
1976	127.8 mm (5.0 in)
1977	126.5 mm (5.0 in)
1978	117.6 mm (4.6 in)
1979	149.9 mm (5.9 in)
1980	154.9 mm (6.1 in)
1981	162.3 mm (6.4 in)
1982	141.7 mm (5.6 in)
1983	104.9 mm (4.1 in)
1984	127.3 mm (5.0 in)
1985	7.9 mm (0.31 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juan Bautista Tuxtepec I, 1950 to 1985. The record is 494.8 mm (19.5 in) in 1956, marked on the chart; the median year is 252.6 mm (9.9 in).

Wettest five days (Rx5day) at San Juan Bautista Tuxtepec I by year
Year	Wettest five days (Rx5day)
1950	40.2 mm (1.6 in)
1951	248.2 mm (9.8 in)
1952	278.9 mm (11.0 in)
1953	218.2 mm (8.6 in)
1954	238.9 mm (9.4 in)
1955	347.2 mm (13.7 in)
1956	494.8 mm (19.5 in)
1957	238.1 mm (9.4 in)
1958	365.6 mm (14.4 in)
1959	256.9 mm (10.1 in)
1960	295.7 mm (11.6 in)
1961	332.8 mm (13.1 in)
1962	206.8 mm (8.1 in)
1963	298.0 mm (11.7 in)
1964	211.6 mm (8.3 in)
1965	207.0 mm (8.1 in)
1966	244.5 mm (9.6 in)
1967	265.7 mm (10.5 in)
1968	276.7 mm (10.9 in)
1969	275.6 mm (10.9 in)
1970	173.2 mm (6.8 in)
1971	234.7 mm (9.2 in)
1972	231.4 mm (9.1 in)
1973	259.9 mm (10.2 in)
1974	365.7 mm (14.4 in)
1975	267.8 mm (10.5 in)
1976	229.4 mm (9.0 in)
1977	181.2 mm (7.1 in)
1978	209.2 mm (8.2 in)
1979	225.3 mm (8.9 in)
1980	361.7 mm (14.2 in)
1981	359.8 mm (14.2 in)
1982	340.5 mm (13.4 in)
1983	183.7 mm (7.2 in)
1984	298.3 mm (11.7 in)
1985	11.2 mm (0.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juan Bautista Tuxtepec I, 1950 to 1985. The record is 51 days in 1958, marked on the chart; the median year is 33 days.

Longest dry spell (CDD) at San Juan Bautista Tuxtepec I by year
Year	Longest dry spell (CDD)
1950	17 days
1951	39 days
1952	26 days
1953	39 days
1954	35 days
1955	30 days
1956	23 days
1957	30 days
1958	51 days
1959	25 days
1960	20 days
1961	38 days
1962	35 days
1963	37 days
1964	24 days
1965	32 days
1966	20 days
1967	35 days
1968	18 days
1969	28 days
1970	51 days
1971	33 days
1972	28 days
1973	35 days
1974	34 days
1975	38 days
1976	35 days
1977	34 days
1978	33 days
1979	15 days
1980	19 days
1981	31 days
1982	34 days
1983	39 days
1984	23 days
1985	8 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

34 years, 1951 to 1984

A day with at least 125.8 mm (5.0 in) of rain is expected about once in 2 years. A day with at least 286.8 mm (11.3 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juan Bautista Tuxtepec I: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	125.8 mm (5.0 in)
5 years	153.6 mm (6.0 in)
10 years	176.9 mm (7.0 in)
25 years	213.5 mm (8.4 in)
50 years	247.0 mm (9.7 in)	Longer than the 34 years of record
100 years	286.8 mm (11.3 in)	Longer than the 34 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, 34 years of values from 1951 to 1984.

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: 341.9 mm (13.5 in) in 1956; 173.2 mm (6.8 in) in 1974; 163.8 mm (6.4 in) in 1960.

Download the Data

Data for San Juan Bautista Tuxtepec I standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Juan Bautista Tuxtepec I 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 2026-10-14 (14 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).