San Rafael Mazatepec Weather Records (MXN00013030)

Record envelope, standing records and threshold days for San Rafael Mazatepec (MXN00013030), Mexico, with 47 years of record.

Key Facts for San Rafael Mazatepec

San Rafael Mazatepec (MXN00013030) is a weather station in Mexico at 19.85 latitude and -98.35 longitude, 2,536 m (8,320 ft) above sea level.
The station reports from 1966 to 2012, 47 years of record.
1,464 records set at San Rafael Mazatepec still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
San Rafael Mazatepec set a daily record precipitation of 30.5 mm (1.2 in) on 29 September 2012.

About the Station

Location: Mexico, 19.85 latitude, -98.35 longitude.
Elevation: 2,536 m (8,320 ft).
Period of record: 1966 to 2012, 47 years.
Eligible elements: 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 Rafael Mazatepec. 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 Rafael Mazatepec, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-7.2 C (19.0 F)	n/a	n/a
Feb	35.0 C (95.0 F)	-7.8 C (18.0 F)	n/a	n/a
Mar	35.6 C (96.1 F)	-5.6 C (21.9 F)	n/a	n/a
Apr	37.2 C (99.0 F)	-1.7 C (28.9 F)	n/a	n/a
May	32.2 C (90.0 F)	-2.8 C (27.0 F)	n/a	n/a
Jun	31.7 C (89.1 F)	0.0 C (32.0 F)	n/a	n/a
Jul	29.4 C (84.9 F)	0.0 C (32.0 F)	n/a	n/a
Aug	30.0 C (86.0 F)	0.0 C (32.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-9.4 C (15.1 F)	n/a	n/a
Dec	31.7 C (89.1 F)	-5.6 C (21.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Rafael Mazatepec still stand. 1999 holds the most, with 155.

Wettest Day of Each Month

Aug: 100.3 mm (3.9 in)

The wettest day on record for each calendar month at San Rafael Mazatepec. The most was 100.3 mm (3.9 in) on 25 August 1980.

Record daily precipitation for each month at San Rafael Mazatepec
Month	Record daily precipitation (mm)	Date
Jan	31.8 mm (1.3 in)	10 January 1967
Feb	65.3 mm (2.6 in)	3 February 2007
Mar	35.1 mm (1.4 in)	24 March 2006
Apr	38.9 mm (1.5 in)	27 April 1976
May	57.2 mm (2.3 in)	28 May 1975
Jun	70.1 mm (2.8 in)	14 June 1977
Jul	80.0 mm (3.1 in)	31 July 2011
Aug	100.3 mm (3.9 in)	25 August 1980
Sep	73.2 mm (2.9 in)	7 September 1990
Oct	93.5 mm (3.7 in)	4 October 1999
Nov	46.5 mm (1.8 in)	5 November 1983
Dec	34.3 mm (1.4 in)	31 December 1983

Period of Record Coverage

1996 to 2012

14 years of record at San Rafael Mazatepec, 1996 to 2012. 5 years have data for under 90 percent of days and are left out of rankings: 1997, 1998, 2000, 2006, 2010.

Days with data per year at San Rafael Mazatepec
Year	Days with data	Share of year	Complete
1996	361	99%	Yes
1997	183	50%	No
1998	197	54%	No
1999	365	100%	Yes
2000	121	33%	No
2004	366	100%	Yes
2005	365	100%	Yes
2006	243	67%	No
2007	363	99%	Yes
2008	353	96%	Yes
2009	365	100%	Yes
2010	242	66%	No
2011	358	98%	Yes
2012	364	99%	Yes

Latest Records

Latest records at San Rafael Mazatepec
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 September 2012	San Rafael Mazatepec, MX	daily rain	30.5 mm (1.2 in)	0.5 mm (0.02 in)	36 years	14 of 100 (Routine)
16 September 2012	San Rafael Mazatepec, MX	daily rain	20.1 mm (0.8 in)	0.8 mm (0.03 in)	14 years	8 of 100 (Routine)
20 August 2012	San Rafael Mazatepec, MX	daily rain	23.9 mm (0.9 in)	10.7 mm (0.4 in)	3 years	14 of 100 (Routine)
11 July 2012	San Rafael Mazatepec, MX	daily rain	40.6 mm (1.6 in)	9.4 mm (0.37 in)	26 years	19 of 100 (Routine)
4 June 2012	San Rafael Mazatepec, MX	daily rain	28.4 mm (1.1 in)	5.3 mm (0.21 in)	34 years	19 of 100 (Routine)
28 March 2012	San Rafael Mazatepec, MX	daily rain	11.4 mm (0.4 in)	3.3 mm (0.13 in)	5 years	10 of 100 (Routine)
26 March 2012	San Rafael Mazatepec, MX	daily rain	8.4 mm (0.33 in)	0.8 mm (0.03 in)	34 years	15 of 100 (Routine)
29 February 2012	San Rafael Mazatepec, MX	daily rain	8.4 mm (0.33 in)	8.4 mm (0.33 in)	40 years	20 of 100 (Routine)
26 February 2012	San Rafael Mazatepec, MX	daily rain	6.9 mm (0.27 in)	2.6 mm (0.10 in)	29 years	15 of 100 (Routine)
25 February 2012	San Rafael Mazatepec, MX	daily rain	4.1 mm (0.16 in)	0.8 mm (0.03 in)	28 years	13 of 100 (Routine)
14 February 2012	San Rafael Mazatepec, MX	daily rain	1.5 mm (0.06 in)	1.5 mm (0.06 in)	45 years	19 of 100 (Routine)
8 February 2012	San Rafael Mazatepec, MX	daily rain	9.4 mm (0.37 in)	3.3 mm (0.13 in)	28 years	16 of 100 (Routine)
4 September 2011	San Rafael Mazatepec, MX	daily rain	34.3 mm (1.4 in)	6.1 mm (0.24 in)	30 years	19 of 100 (Routine)
31 July 2011	San Rafael Mazatepec, MX	monthly rain	80.0 mm (3.1 in)	9.6 mm (0.38 in)	39 years	33 of 100 (Routine)
17 April 2011	San Rafael Mazatepec, MX	daily rain	20.3 mm (0.8 in)	3.0 mm (0.12 in)	38 years	19 of 100 (Routine)
14 August 2010	San Rafael Mazatepec, MX	daily rain	43.2 mm (1.7 in)	21.1 mm (0.8 in)	40 years	37 of 100 (Notable)
24 July 2010	San Rafael Mazatepec, MX	daily rain	30.0 mm (1.2 in)	17.3 mm (0.7 in)	20 years	26 of 100 (Routine)
12 June 2010	San Rafael Mazatepec, MX	daily rain	34.5 mm (1.4 in)	6.1 mm (0.24 in)	36 years	19 of 100 (Routine)
16 May 2010	San Rafael Mazatepec, MX	daily rain	29.2 mm (1.1 in)	19.3 mm (0.8 in)	27 years	35 of 100 (Notable)
17 April 2010	San Rafael Mazatepec, MX	daily rain (Tie)	17.3 mm (0.7 in)	tie	37 years	3 of 100 (Routine)

Extremes by Year

1966 to 2012

Yearly extremes at San Rafael Mazatepec: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	2010	30.9 C (87.5 F)	14
Coldest night (TNn)	-9.4 C (15.1 F)	1999	0.0 C (32.0 F)	14
Wettest day (Rx1day)	100.3 mm (3.9 in)	1980	41.4 mm (1.6 in)	40
Wettest five days (Rx5day)	155.2 mm (6.1 in)	1990	86.6 mm (3.4 in)	40
Longest dry spell (CDD)	149 days	1971	45 days	40

Hottest day (TXx)

The hottest day of the year at San Rafael Mazatepec, 1966 to 2012. The record is 37.2 C (99.0 F) in 2010, marked on the chart; the median year is 30.9 C (87.5 F).

Hottest day (TXx) at San Rafael Mazatepec by year
Year	Hottest day (TXx)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1996	28.3 C (82.9 F)
1997	28.3 C (82.9 F)
1998	25.0 C (77.0 F)
1999	27.8 C (82.0 F)
2000	28.3 C (82.9 F)
2004	28.9 C (84.0 F)
2005	32.8 C (91.0 F)
2006	32.2 C (90.0 F)
2007	30.0 C (86.0 F)
2008	33.9 C (93.0 F)
2009	31.7 C (89.1 F)
2010	37.2 C (99.0 F)
2011	32.2 C (90.0 F)
2012	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at San Rafael Mazatepec, 1966 to 2012. The record is -9.4 C (15.1 F) in 1999, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at San Rafael Mazatepec by year
Year	Coldest night (TNn)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1996	-6.1 C (21.0 F)
1997	-3.9 C (25.0 F)
1998	0.0 C (32.0 F)
1999	-9.4 C (15.1 F)
2000	-7.8 C (18.0 F)
2004	-3.3 C (26.1 F)
2005	0.0 C (32.0 F)
2006	0.0 C (32.0 F)
2007	-5.0 C (23.0 F)
2008	0.0 C (32.0 F)
2009	0.0 C (32.0 F)
2010	0.0 C (32.0 F)
2011	0.0 C (32.0 F)
2012	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Rafael Mazatepec, 1966 to 2012. The record is 100.3 mm (3.9 in) in 1980, marked on the chart; the median year is 41.4 mm (1.6 in).

Wettest day (Rx1day) at San Rafael Mazatepec by year
Year	Wettest day (Rx1day)
1966	40.4 mm (1.6 in)
1967	31.8 mm (1.3 in)
1968	39.9 mm (1.6 in)
1969	63.5 mm (2.5 in)
1970	25.1 mm (1.0 in)
1971	39.9 mm (1.6 in)
1972	70.4 mm (2.8 in)
1973	41.4 mm (1.6 in)
1974	60.5 mm (2.4 in)
1975	57.2 mm (2.3 in)
1976	52.1 mm (2.1 in)
1977	70.1 mm (2.8 in)
1978	36.6 mm (1.4 in)
1979	31.5 mm (1.2 in)
1980	100.3 mm (3.9 in)
1981	31.8 mm (1.3 in)
1982	45.0 mm (1.8 in)
1983	66.3 mm (2.6 in)
1984	34.5 mm (1.4 in)
1985	41.4 mm (1.6 in)
1986	31.2 mm (1.2 in)
1987	32.5 mm (1.3 in)
1988	34.0 mm (1.3 in)
1989	32.0 mm (1.3 in)
1990	73.2 mm (2.9 in)
1991	45.0 mm (1.8 in)
1996	29.5 mm (1.2 in)
1997	32.8 mm (1.3 in)
1998	58.4 mm (2.3 in)
1999	93.5 mm (3.7 in)
2000	13.5 mm (0.5 in)
2004	66.5 mm (2.6 in)
2005	36.6 mm (1.4 in)
2006	43.4 mm (1.7 in)
2007	75.4 mm (3.0 in)
2008	40.4 mm (1.6 in)
2009	67.3 mm (2.6 in)
2010	43.2 mm (1.7 in)
2011	80.0 mm (3.1 in)
2012	40.6 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Rafael Mazatepec, 1966 to 2012. The record is 155.2 mm (6.1 in) in 1990, marked on the chart; the median year is 86.6 mm (3.4 in).

Wettest five days (Rx5day) at San Rafael Mazatepec by year
Year	Wettest five days (Rx5day)
1966	73.1 mm (2.9 in)
1967	62.0 mm (2.4 in)
1968	101.8 mm (4.0 in)
1969	130.8 mm (5.1 in)
1970	56.5 mm (2.2 in)
1971	84.6 mm (3.3 in)
1972	83.6 mm (3.3 in)
1973	100.3 mm (3.9 in)
1974	117.3 mm (4.6 in)
1975	105.1 mm (4.1 in)
1976	80.1 mm (3.2 in)
1977	116.4 mm (4.6 in)
1978	61.4 mm (2.4 in)
1979	83.1 mm (3.3 in)
1980	105.4 mm (4.1 in)
1981	70.6 mm (2.8 in)
1982	94.3 mm (3.7 in)
1983	149.1 mm (5.9 in)
1984	81.7 mm (3.2 in)
1985	105.6 mm (4.2 in)
1986	79.9 mm (3.1 in)
1987	61.0 mm (2.4 in)
1988	59.4 mm (2.3 in)
1989	53.1 mm (2.1 in)
1990	155.2 mm (6.1 in)
1991	87.7 mm (3.5 in)
1996	77.8 mm (3.1 in)
1997	84.8 mm (3.3 in)
1998	116.1 mm (4.6 in)
1999	134.3 mm (5.3 in)
2000	15.0 mm (0.6 in)
2004	98.1 mm (3.9 in)
2005	65.3 mm (2.6 in)
2006	84.1 mm (3.3 in)
2007	116.2 mm (4.6 in)
2008	105.8 mm (4.2 in)
2009	105.3 mm (4.1 in)
2010	94.3 mm (3.7 in)
2011	95.5 mm (3.8 in)
2012	85.4 mm (3.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Rafael Mazatepec, 1966 to 2012. The record is 149 days in 1971, marked on the chart; the median year is 45 days.

Longest dry spell (CDD) at San Rafael Mazatepec by year
Year	Longest dry spell (CDD)
1966	59 days
1967	25 days
1968	36 days
1969	53 days
1970	79 days
1971	149 days
1972	33 days
1973	68 days
1974	33 days
1975	49 days
1976	28 days
1977	61 days
1978	28 days
1979	36 days
1980	34 days
1981	35 days
1982	44 days
1983	29 days
1984	28 days
1985	34 days
1986	50 days
1987	63 days
1988	58 days
1989	44 days
1990	25 days
1991	37 days
1996	46 days
1997	28 days
1998	38 days
1999	59 days
2000	48 days
2004	43 days
2005	54 days
2006	54 days
2007	27 days
2008	74 days
2009	51 days
2010	47 days
2011	56 days
2012	56 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, 1967 to 2012

A day with at least 45.3 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 125.6 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at San Rafael Mazatepec: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	45.3 mm (1.8 in)
5 years	63.0 mm (2.5 in)
10 years	76.1 mm (3.0 in)
25 years	94.4 mm (3.7 in)
50 years	109.4 mm (4.3 in)	Longer than the 35 years of record
100 years	125.6 mm (4.9 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 1967 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: 100.3 mm (3.9 in) in 1980; 93.5 mm (3.7 in) in 1999; 80.0 mm (3.1 in) in 2011.

Download the Data

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