Simon Bolivar Weather Records (MXN00010080)

Record envelope, standing records and threshold days for Simon Bolivar (MXN00010080), Mexico, with 44 years of record.

Key Facts for Simon Bolivar

Simon Bolivar (MXN00010080) is a weather station in Mexico at 24.68 latitude and -103.22 longitude, 1,525 m (5,003 ft) above sea level.
The station reports from 1969 to 2012, 44 years of record.
1,464 records set at Simon Bolivar still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Simon Bolivar set a daily record precipitation of 13.5 mm (0.5 in) on 15 September 2012.

About the Station

Location: Mexico, 24.68 latitude, -103.22 longitude.
Elevation: 1,525 m (5,003 ft).
Period of record: 1969 to 2012, 44 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 Simon Bolivar. 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 Simon Bolivar, 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)	-9.4 C (15.1 F)	n/a	n/a
Feb	41.7 C (107.1 F)	-10.0 C (14.0 F)	n/a	n/a
Mar	38.9 C (102.0 F)	-5.0 C (23.0 F)	n/a	n/a
Apr	41.7 C (107.1 F)	-5.0 C (23.0 F)	n/a	n/a
May	47.8 C (118.0 F)	0.6 C (33.1 F)	n/a	n/a
Jun	41.1 C (106.0 F)	1.1 C (34.0 F)	n/a	n/a
Jul	45.0 C (113.0 F)	1.7 C (35.1 F)	n/a	n/a
Aug	40.0 C (104.0 F)	0.0 C (32.0 F)	n/a	n/a
Sep	40.0 C (104.0 F)	0.6 C (33.1 F)	n/a	n/a
Oct	43.9 C (111.0 F)	-2.2 C (28.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	-8.3 C (17.1 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-8.3 C (17.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Simon Bolivar still stand. 1991 holds the most, with 177.

Standing records at Simon Bolivar by the year they were set
Year set	Standing records
1991	177
1992	142
1993	64
1994	93
1995	116
1996	64
1997	90
1998	152
1999	63
2000	55
2001	54
2002	41
2003	31
2004	30
2005	27
2006	47
2007	45
2008	30
2009	31
2010	23
2011	82
2012	7

Wettest Day of Each Month

Sep: 98.3 mm (3.9 in)

The wettest day on record for each calendar month at Simon Bolivar. The most was 98.3 mm (3.9 in) on 8 September 1986.

Record daily precipitation for each month at Simon Bolivar
Month	Record daily precipitation (mm)	Date
Jan	32.8 mm (1.3 in)	30 January 1984
Feb	41.9 mm (1.6 in)	26 February 1987
Mar	91.9 mm (3.6 in)	21 March 2004
Apr	24.9 mm (1.0 in)	19 April 1979
May	39.9 mm (1.6 in)	27 May 1983
Jun	93.0 mm (3.7 in)	8 June 2008
Jul	45.0 mm (1.8 in)	4 July 1976
Aug	75.4 mm (3.0 in)	30 August 1978
Sep	98.3 mm (3.9 in)	8 September 1986
Oct	45.0 mm (1.8 in)	7 October 1981
Nov	49.8 mm (2.0 in)	25 November 1982
Dec	19.8 mm (0.8 in)	5 December 1981

Period of Record Coverage

1991 to 2012

22 years of record at Simon Bolivar, 1991 to 2012. 7 years have data for under 90 percent of days and are left out of rankings: 1991, 1996, 1997, 1998, 2007, 2010, 2012.

Days with data per year at Simon Bolivar
Year	Days with data	Share of year	Complete
1991	163	45%	No
1992	360	98%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	330	90%	Yes
1996	305	83%	No
1997	303	83%	No
1998	272	75%	No
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	335	92%	Yes
2003	365	100%	Yes
2004	334	91%	Yes
2005	365	100%	Yes
2006	333	91%	Yes
2007	240	66%	No
2008	364	99%	Yes
2009	356	98%	Yes
2010	312	85%	No
2011	343	94%	Yes
2012	262	72%	No

Latest Records

Latest records at Simon Bolivar
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 2012	Simon Bolivar, MX	daily rain	13.5 mm (0.5 in)	7.7 mm (0.30 in)	42 years	20 of 100 (Routine)
4 September 2012	Simon Bolivar, MX	daily rain	24.4 mm (1.0 in)	0.3 mm (0.01 in)	4 years	5 of 100 (Routine)
3 September 2012	Simon Bolivar, MX	daily rain	17.3 mm (0.7 in)	5.9 mm (0.23 in)	1 year	8 of 100 (Routine)
10 April 2012	Simon Bolivar, MX	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	43 years	20 of 100 (Routine)
9 April 2012	Simon Bolivar, MX	daily rain	21.3 mm (0.8 in)	21.3 mm (0.8 in)	43 years	20 of 100 (Routine)
3 September 2011	Simon Bolivar, MX	daily rain	11.4 mm (0.4 in)	1.5 mm (0.06 in)	34 years	15 of 100 (Routine)
6 August 2011	Simon Bolivar, MX	daily rain	16.8 mm (0.7 in)	1.8 mm (0.07 in)	36 years	16 of 100 (Routine)
28 July 2010	Simon Bolivar, MX	daily rain	15.0 mm (0.6 in)	6.4 mm (0.25 in)	3 years	12 of 100 (Routine)
27 July 2010	Simon Bolivar, MX	daily rain	28.7 mm (1.1 in)	13.2 mm (0.5 in)	32 years	29 of 100 (Routine)
26 July 2010	Simon Bolivar, MX	daily rain	12.2 mm (0.5 in)	2.3 mm (0.09 in)	19 years	11 of 100 (Routine)
25 July 2010	Simon Bolivar, MX	daily rain	29.5 mm (1.2 in)	14.0 mm (0.6 in)	32 years	30 of 100 (Routine)
8 July 2010	Simon Bolivar, MX	daily rain	27.2 mm (1.1 in)	4.8 mm (0.19 in)	33 years	20 of 100 (Routine)
18 April 2010	Simon Bolivar, MX	daily rain	1.8 mm (0.07 in)	1.8 mm (0.07 in)	40 years	18 of 100 (Routine)
7 March 2010	Simon Bolivar, MX	daily rain	4.8 mm (0.19 in)	4.8 mm (0.19 in)	40 years	20 of 100 (Routine)
18 February 2010	Simon Bolivar, MX	daily rain	1.8 mm (0.07 in)	1.8 mm (0.07 in)	40 years	17 of 100 (Routine)
3 February 2010	Simon Bolivar, MX	daily rain	17.8 mm (0.7 in)	13.0 mm (0.5 in)	4 years	18 of 100 (Routine)
29 December 2009	Simon Bolivar, MX	daily rain	15.0 mm (0.6 in)	5.1 mm (0.20 in)	24 years	20 of 100 (Routine)
1 December 2009	Simon Bolivar, MX	daily rain	8.4 mm (0.33 in)	5.6 mm (0.22 in)	38 years	20 of 100 (Routine)
30 November 2009	Simon Bolivar, MX	daily rain	8.4 mm (0.33 in)	5.6 mm (0.22 in)	22 years	15 of 100 (Routine)
20 October 2009	Simon Bolivar, MX	daily rain	9.9 mm (0.39 in)	4.6 mm (0.18 in)	3 years	9 of 100 (Routine)

Climate Trend

11 complete years, 1992 to 2011

One stripe for each of 11 complete years at Simon Bolivar, 1992 to 2011. Blue stripes are years cooler than the station's own mean of 18.8 C (65.8 F); red stripes are warmer. The coolest year was 1992, at 16.4 C (61.6 F), and the warmest was 1999, at 22.1 C (71.7 F). The strongest colour marks a difference of 3.3 C (5.9 F).

Annual mean temperature at Simon Bolivar as warming stripes, 1992 to 2011
Year	Annual mean temperature	Difference from the station mean
1992	16.4 C	-2.35 C
1993	16.9 C	-1.85 C
1994	18.0 C	-0.82 C
1999	22.1 C	+3.28 C
2000	18.9 C	+0.09 C
2001	18.4 C	-0.40 C
2003	17.5 C	-1.26 C
2005	17.0 C	-1.74 C
2008	19.8 C	+1.00 C
2009	20.3 C	+1.56 C
2011	21.3 C	+2.50 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1969 to 2012

Yearly extremes at Simon Bolivar: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	47.8 C (118.0 F)	1995	38.9 C (102.0 F)	22
Coldest night (TNn)	-10.0 C (14.0 F)	2011	-3.8 C (25.1 F)	22
Wettest day (Rx1day)	98.3 mm (3.9 in)	1986	39.9 mm (1.6 in)	44
Wettest five days (Rx5day)	193.1 mm (7.6 in)	2003	67.2 mm (2.6 in)	44
Longest dry spell (CDD)	176 days	1989	96 days	44

Hottest day (TXx)

The hottest day of the year at Simon Bolivar, 1969 to 2012. The record is 47.8 C (118.0 F) in 1995, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Simon Bolivar by year
Year	Hottest day (TXx)
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	30.6 C (87.1 F)
1992	35.0 C (95.0 F)
1993	37.8 C (100.0 F)
1994	43.9 C (111.0 F)
1995	47.8 C (118.0 F)
1996	41.7 C (107.1 F)
1997	37.8 C (100.0 F)
1998	41.7 C (107.1 F)
1999	40.0 C (104.0 F)
2000	38.9 C (102.0 F)
2001	38.9 C (102.0 F)
2002	38.9 C (102.0 F)
2003	40.6 C (105.1 F)
2004	38.9 C (102.0 F)
2005	45.0 C (113.0 F)
2006	37.8 C (100.0 F)
2007	36.7 C (98.1 F)
2008	38.9 C (102.0 F)
2009	38.9 C (102.0 F)
2010	39.4 C (102.9 F)
2011	42.2 C (108.0 F)
2012	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Simon Bolivar, 1969 to 2012. The record is -10.0 C (14.0 F) in 2011, marked on the chart; the median year is -3.8 C (25.1 F).

Coldest night (TNn) at Simon Bolivar by year
Year	Coldest night (TNn)
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	0.0 C (32.0 F)
1992	-3.3 C (26.1 F)
1993	-5.0 C (23.0 F)
1994	-8.3 C (17.1 F)
1995	-7.2 C (19.0 F)
1996	-7.2 C (19.0 F)
1997	-8.3 C (17.1 F)
1998	-2.2 C (28.0 F)
1999	-2.2 C (28.0 F)
2000	0.0 C (32.0 F)
2001	-2.2 C (28.0 F)
2002	0.0 C (32.0 F)
2003	-4.4 C (24.1 F)
2004	-9.4 C (15.1 F)
2005	-8.3 C (17.1 F)
2006	-4.4 C (24.1 F)
2007	-3.3 C (26.1 F)
2008	-4.4 C (24.1 F)
2009	0.6 C (33.1 F)
2010	-2.2 C (28.0 F)
2011	-10.0 C (14.0 F)
2012	2.2 C (36.0 F)

Wettest day (Rx1day)

The wettest day of the year at Simon Bolivar, 1969 to 2012. The record is 98.3 mm (3.9 in) in 1986, marked on the chart; the median year is 39.9 mm (1.6 in).

Wettest day (Rx1day) at Simon Bolivar by year
Year	Wettest day (Rx1day)
1969	61.5 mm (2.4 in)
1970	33.3 mm (1.3 in)
1971	59.9 mm (2.4 in)
1972	34.8 mm (1.4 in)
1973	39.9 mm (1.6 in)
1974	30.0 mm (1.2 in)
1975	31.8 mm (1.3 in)
1976	45.0 mm (1.8 in)
1977	25.4 mm (1.0 in)
1978	75.4 mm (3.0 in)
1979	61.0 mm (2.4 in)
1980	49.8 mm (2.0 in)
1981	45.0 mm (1.8 in)
1982	49.8 mm (2.0 in)
1983	39.9 mm (1.6 in)
1984	32.8 mm (1.3 in)
1985	84.8 mm (3.3 in)
1986	98.3 mm (3.9 in)
1987	41.9 mm (1.6 in)
1988	39.9 mm (1.6 in)
1989	34.8 mm (1.4 in)
1990	45.0 mm (1.8 in)
1991	45.0 mm (1.8 in)
1992	26.4 mm (1.0 in)
1993	25.9 mm (1.0 in)
1994	30.0 mm (1.2 in)
1995	30.0 mm (1.2 in)
1996	19.8 mm (0.8 in)
1997	41.9 mm (1.6 in)
1998	45.0 mm (1.8 in)
1999	37.8 mm (1.5 in)
2000	62.0 mm (2.4 in)
2001	30.0 mm (1.2 in)
2002	24.9 mm (1.0 in)
2003	79.8 mm (3.1 in)
2004	91.9 mm (3.6 in)
2005	69.9 mm (2.8 in)
2006	27.9 mm (1.1 in)
2007	18.3 mm (0.7 in)
2008	93.0 mm (3.7 in)
2009	28.4 mm (1.1 in)
2010	29.5 mm (1.2 in)
2011	16.8 mm (0.7 in)
2012	24.4 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Simon Bolivar, 1969 to 2012. The record is 193.1 mm (7.6 in) in 2003, marked on the chart; the median year is 67.2 mm (2.6 in).

Wettest five days (Rx5day) at Simon Bolivar by year
Year	Wettest five days (Rx5day)
1969	74.5 mm (2.9 in)
1970	72.7 mm (2.9 in)
1971	87.4 mm (3.4 in)
1972	61.2 mm (2.4 in)
1973	94.5 mm (3.7 in)
1974	50.0 mm (2.0 in)
1975	65.6 mm (2.6 in)
1976	159.3 mm (6.3 in)
1977	43.9 mm (1.7 in)
1978	137.1 mm (5.4 in)
1979	101.6 mm (4.0 in)
1980	115.6 mm (4.6 in)
1981	76.8 mm (3.0 in)
1982	69.6 mm (2.7 in)
1983	64.8 mm (2.6 in)
1984	36.4 mm (1.4 in)
1985	93.7 mm (3.7 in)
1986	162.0 mm (6.4 in)
1987	57.4 mm (2.3 in)
1988	93.3 mm (3.7 in)
1989	45.5 mm (1.8 in)
1990	67.6 mm (2.7 in)
1991	118.9 mm (4.7 in)
1992	63.0 mm (2.5 in)
1993	44.5 mm (1.8 in)
1994	80.8 mm (3.2 in)
1995	54.9 mm (2.2 in)
1996	42.4 mm (1.7 in)
1997	56.9 mm (2.2 in)
1998	71.1 mm (2.8 in)
1999	59.7 mm (2.4 in)
2000	66.8 mm (2.6 in)
2001	31.5 mm (1.2 in)
2002	24.9 mm (1.0 in)
2003	193.1 mm (7.6 in)
2004	116.8 mm (4.6 in)
2005	84.9 mm (3.3 in)
2006	38.8 mm (1.5 in)
2007	29.7 mm (1.2 in)
2008	93.0 mm (3.7 in)
2009	50.8 mm (2.0 in)
2010	85.4 mm (3.4 in)
2011	27.7 mm (1.1 in)
2012	51.3 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Simon Bolivar, 1969 to 2012. The record is 176 days in 1989, marked on the chart; the median year is 96 days.

Longest dry spell (CDD) at Simon Bolivar by year
Year	Longest dry spell (CDD)
1969	141 days
1970	123 days
1971	146 days
1972	100 days
1973	81 days
1974	148 days
1975	111 days
1976	94 days
1977	93 days
1978	83 days
1979	63 days
1980	126 days
1981	40 days
1982	111 days
1983	128 days
1984	108 days
1985	84 days
1986	80 days
1987	54 days
1988	94 days
1989	176 days
1990	112 days
1991	159 days
1992	44 days
1993	106 days
1994	65 days
1995	169 days
1996	107 days
1997	65 days
1998	48 days
1999	143 days
2000	117 days
2001	52 days
2002	89 days
2003	109 days
2004	62 days
2005	76 days
2006	103 days
2007	89 days
2008	97 days
2009	53 days
2010	95 days
2011	148 days
2012	73 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

38 years, 1969 to 2012

A day with at least 40.3 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 136.3 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Simon Bolivar: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.3 mm (1.6 in)
5 years	59.4 mm (2.3 in)
10 years	74.4 mm (2.9 in)
25 years	96.4 mm (3.8 in)
50 years	115.2 mm (4.5 in)	Longer than the 38 years of record
100 years	136.3 mm (5.4 in)	Longer than the 38 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, 38 years of values from 1969 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: 98.3 mm (3.9 in) in 1986; 93.0 mm (3.7 in) in 2008; 91.9 mm (3.6 in) in 2004.

Download the Data

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