Bajio de Ahuichila Weather Records (MXN00005004)

Record envelope, standing records and threshold days for Bajio de Ahuichila (MXN00005004), Mexico, with 43 years of record.

Key Facts for Bajio de Ahuichila

Bajio de Ahuichila (MXN00005004) is a weather station in Mexico at 25.10 latitude and -102.62 longitude, 1,300 m (4,265 ft) above sea level.
The station reports from 1967 to 2009, 43 years of record.
1,464 records set at Bajio de Ahuichila still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Bajio de Ahuichila tied a daily record high maximum temperature of 31.7 C (89.1 F) on 27 February 2009.

About the Station

Location: Mexico, 25.10 latitude, -102.62 longitude.
Elevation: 1,300 m (4,265 ft).
Period of record: 1967 to 2009, 43 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 Bajio de Ahuichila. 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 Bajio de Ahuichila, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.9 C (93.0 F)	-13.3 C (8.1 F)	n/a	n/a
Feb	34.4 C (93.9 F)	-9.4 C (15.1 F)	n/a	n/a
Mar	40.0 C (104.0 F)	-10.0 C (14.0 F)	n/a	n/a
Apr	40.0 C (104.0 F)	-6.1 C (21.0 F)	n/a	n/a
May	45.0 C (113.0 F)	0.6 C (33.1 F)	n/a	n/a
Jun	41.7 C (107.1 F)	0.6 C (33.1 F)	n/a	n/a
Jul	40.6 C (105.1 F)	7.8 C (46.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	10.0 C (50.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	0.6 C (33.1 F)	n/a	n/a
Oct	38.3 C (100.9 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	36.7 C (98.1 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	37.8 C (100.0 F)	-12.2 C (10.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Bajio de Ahuichila still stand. 1979 holds the most, with 127.

Standing records at Bajio de Ahuichila by the year they were set
Year set	Standing records
1976	34
1977	40
1978	47
1979	127
1980	74
1981	30
1982	24
1983	46
1984	37
1985	32
1986	30
1987	69
1988	90
1989	79
1990	28
1991	50
1992	61
1993	24
1994	37
1995	39
1996	31
1997	31
1998	33
1999	58
2000	64
2001	15
2002	27
2003	47
2004	36
2005	32
2006	31
2007	18
2008	40
2009	3

All-Time Record Progression

1 new records

1 all-time records were set at Bajio de Ahuichila between 18 January 2006 and 18 January 2006. Each dot is a new record.

Wettest Day of Each Month

Dec: 84.8 mm (3.3 in)

The wettest day on record for each calendar month at Bajio de Ahuichila. The most was 84.8 mm (3.3 in) on 3 December 1994.

Record daily precipitation for each month at Bajio de Ahuichila
Month	Record daily precipitation (mm)	Date
Jan	32.8 mm (1.3 in)	18 January 1983
Feb	39.9 mm (1.6 in)	26 February 1987
Mar	26.9 mm (1.1 in)	3 March 1968
Apr	20.8 mm (0.8 in)	14 April 1981
May	34.8 mm (1.4 in)	12 May 1971
Jun	40.9 mm (1.6 in)	21 June 1995
Jul	79.8 mm (3.1 in)	13 July 2002
Aug	39.9 mm (1.6 in)	7 August 1973
Sep	47.8 mm (1.9 in)	5 September 1985
Oct	45.0 mm (1.8 in)	11 October 2003
Nov	45.0 mm (1.8 in)	25 November 1982
Dec	84.8 mm (3.3 in)	3 December 1994

Period of Record Coverage

1976 to 2009

34 years of record at Bajio de Ahuichila, 1976 to 2009. 5 years have data for under 90 percent of days and are left out of rankings: 1976, 2000, 2001, 2007, 2009.

Days with data per year at Bajio de Ahuichila
Year	Days with data	Share of year	Complete
1976	259	71%	No
1977	334	92%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	333	91%	Yes
1988	365	100%	Yes
1989	364	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	361	99%	Yes
1996	366	100%	Yes
1997	362	99%	Yes
1998	364	100%	Yes
1999	365	100%	Yes
2000	305	83%	No
2001	263	72%	No
2002	365	100%	Yes
2003	362	99%	Yes
2004	366	100%	Yes
2005	364	100%	Yes
2006	360	99%	Yes
2007	264	72%	No
2008	363	99%	Yes
2009	59	16%	No

Latest Records

Latest records at Bajio de Ahuichila
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 February 2009	Bajio de Ahuichila, MX	daily high max (Tie)	31.7 C (89.1 F)	tie	28 years	2 of 100 (Routine)
26 February 2009	Bajio de Ahuichila, MX	daily high max	33.9 C (93.0 F)	1.1 C (2.0 F)	9 years	7 of 100 (Routine)
21 January 2009	Bajio de Ahuichila, MX	daily high min	8.9 C (48.0 F)	2.2 C (4.0 F)	10 years	10 of 100 (Routine)
13 January 2009	Bajio de Ahuichila, MX	daily low max (Tie)	10.6 C (51.1 F)	tie	24 years	2 of 100 (Routine)
6 January 2009	Bajio de Ahuichila, MX	daily high min	10.0 C (50.0 F)	2.2 C (4.0 F)	2 years	7 of 100 (Routine)
5 January 2009	Bajio de Ahuichila, MX	daily high min (Tie)	8.9 C (48.0 F)	tie	25 years	2 of 100 (Routine)
4 January 2009	Bajio de Ahuichila, MX	daily high min (Tie)	8.9 C (48.0 F)	tie	25 years	2 of 100 (Routine)
18 December 2008	Bajio de Ahuichila, MX	daily low max	11.7 C (53.1 F)	1.1 C (2.0 F)	4 years	6 of 100 (Routine)
16 December 2008	Bajio de Ahuichila, MX	daily high max	28.9 C (84.0 F)	1.1 C (2.0 F)	24 years	12 of 100 (Routine)
11 December 2008	Bajio de Ahuichila, MX	daily low max	13.9 C (57.0 F)	1.1 C (2.0 F)	22 years	11 of 100 (Routine)
10 December 2008	Bajio de Ahuichila, MX	daily low max	11.7 C (53.1 F)	5.0 C (9.0 F)	6 years	14 of 100 (Routine)
9 December 2008	Bajio de Ahuichila, MX	daily low max	12.8 C (55.0 F)	1.1 C (2.0 F)	6 years	6 of 100 (Routine)
8 December 2008	Bajio de Ahuichila, MX	monthly high max	37.8 C (100.0 F)	5.0 C (9.0 F)	19 years	28 of 100 (Routine)
14 November 2008	Bajio de Ahuichila, MX	daily low max	15.0 C (59.0 F)	0.6 C (1.1 F)	32 years	13 of 100 (Routine)
10 October 2008	Bajio de Ahuichila, MX	daily high min (Tie)	15.6 C (60.1 F)	tie	9 years	1 of 100 (Routine)
3 October 2008	Bajio de Ahuichila, MX	daily low max	21.7 C (71.1 F)	2.2 C (4.0 F)	16 years	12 of 100 (Routine)
2 October 2008	Bajio de Ahuichila, MX	daily low max	20.0 C (68.0 F)	2.8 C (5.0 F)	16 years	14 of 100 (Routine)
1 October 2008	Bajio de Ahuichila, MX	daily low max	18.9 C (66.0 F)	6.1 C (11.0 F)	21 years	25 of 100 (Routine)
29 September 2008	Bajio de Ahuichila, MX	daily low max	22.8 C (73.0 F)	2.2 C (4.0 F)	30 years	18 of 100 (Routine)
26 September 2008	Bajio de Ahuichila, MX	daily low max (Tie)	20.6 C (69.1 F)	tie	4 years	1 of 100 (Routine)

Climate Trend

27 complete years, 1978 to 2008

One stripe for each of 27 complete years at Bajio de Ahuichila, 1978 to 2008. Blue stripes are years cooler than the station's own mean of 18.6 C (65.5 F); red stripes are warmer. The coolest year was 1988, at 17.6 C (63.6 F), and the warmest was 1996, at 20.0 C (68.0 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Bajio de Ahuichila as warming stripes, 1978 to 2008
Year	Annual mean temperature	Difference from the station mean
1978	19.7 C	+1.11 C
1979	19.8 C	+1.16 C
1980	19.6 C	+0.97 C
1981	20.0 C	+1.35 C
1982	19.7 C	+1.07 C
1983	18.1 C	-0.56 C
1984	18.7 C	+0.12 C
1985	18.6 C	-0.06 C
1986	17.8 C	-0.83 C
1988	17.6 C	-1.05 C
1989	18.0 C	-0.63 C
1990	18.8 C	+0.17 C
1991	18.1 C	-0.52 C
1992	17.7 C	-0.87 C
1993	19.1 C	+0.45 C
1994	19.9 C	+1.25 C
1995	18.8 C	+0.14 C
1996	20.0 C	+1.38 C
1997	19.6 C	+1.03 C
1998	17.8 C	-0.85 C
1999	18.0 C	-0.62 C
2002	17.7 C	-0.88 C
2003	17.8 C	-0.83 C
2004	17.7 C	-0.93 C
2005	18.0 C	-0.66 C
2006	18.3 C	-0.29 C
2008	17.9 C	-0.69 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

1967 to 2009

Yearly extremes at Bajio de Ahuichila: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1989	39.2 C (102.5 F)	34
Coldest night (TNn)	-13.3 C (8.1 F)	2006	-8.3 C (17.1 F)	34
Wettest day (Rx1day)	84.8 mm (3.3 in)	1994	25.9 mm (1.0 in)	43
Wettest five days (Rx5day)	121.2 mm (4.8 in)	2002	48.3 mm (1.9 in)	43
Longest dry spell (CDD)	176 days	1969	91 days	43

Hottest day (TXx)

The hottest day of the year at Bajio de Ahuichila, 1967 to 2009. The record is 45.0 C (113.0 F) in 1989, marked on the chart; the median year is 39.2 C (102.5 F).

Hottest day (TXx) at Bajio de Ahuichila by year
Year	Hottest day (TXx)
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	40.6 C (105.1 F)
1977	40.0 C (104.0 F)
1978	39.4 C (102.9 F)
1979	41.7 C (107.1 F)
1980	41.7 C (107.1 F)
1981	40.6 C (105.1 F)
1982	40.6 C (105.1 F)
1983	41.7 C (107.1 F)
1984	40.0 C (104.0 F)
1985	40.6 C (105.1 F)
1986	36.7 C (98.1 F)
1987	40.0 C (104.0 F)
1988	38.9 C (102.0 F)
1989	45.0 C (113.0 F)
1990	40.6 C (105.1 F)
1991	41.7 C (107.1 F)
1992	40.0 C (104.0 F)
1993	40.6 C (105.1 F)
1994	37.8 C (100.0 F)
1995	38.9 C (102.0 F)
1996	37.8 C (100.0 F)
1997	38.9 C (102.0 F)
1998	38.9 C (102.0 F)
1999	35.6 C (96.1 F)
2000	38.9 C (102.0 F)
2001	40.6 C (105.1 F)
2002	37.8 C (100.0 F)
2003	36.7 C (98.1 F)
2004	35.6 C (96.1 F)
2005	37.8 C (100.0 F)
2006	35.6 C (96.1 F)
2007	37.8 C (100.0 F)
2008	37.8 C (100.0 F)
2009	33.9 C (93.0 F)

Coldest night (TNn)

The coldest night of the year at Bajio de Ahuichila, 1967 to 2009. The record is -13.3 C (8.1 F) in 2006, marked on the chart; the median year is -8.3 C (17.1 F).

Coldest night (TNn) at Bajio de Ahuichila by year
Year	Coldest night (TNn)
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	-5.0 C (23.0 F)
1977	-6.1 C (21.0 F)
1978	-11.1 C (12.0 F)
1979	-9.4 C (15.1 F)
1980	-7.2 C (19.0 F)
1981	-4.4 C (24.1 F)
1982	-6.1 C (21.0 F)
1983	-9.4 C (15.1 F)
1984	-8.3 C (17.1 F)
1985	-8.3 C (17.1 F)
1986	-10.0 C (14.0 F)
1987	-7.2 C (19.0 F)
1988	-6.1 C (21.0 F)
1989	-10.0 C (14.0 F)
1990	-12.2 C (10.0 F)
1991	-8.3 C (17.1 F)
1992	-9.4 C (15.1 F)
1993	-6.1 C (21.0 F)
1994	-6.1 C (21.0 F)
1995	-8.3 C (17.1 F)
1996	-6.1 C (21.0 F)
1997	-7.2 C (19.0 F)
1998	-8.3 C (17.1 F)
1999	-12.2 C (10.0 F)
2000	-7.2 C (19.0 F)
2001	-8.3 C (17.1 F)
2002	-10.0 C (14.0 F)
2003	-9.4 C (15.1 F)
2004	-12.2 C (10.0 F)
2005	-10.0 C (14.0 F)
2006	-13.3 C (8.1 F)
2007	-7.2 C (19.0 F)
2008	-8.3 C (17.1 F)
2009	-6.1 C (21.0 F)

Wettest day (Rx1day)

The wettest day of the year at Bajio de Ahuichila, 1967 to 2009. The record is 84.8 mm (3.3 in) in 1994, marked on the chart; the median year is 25.9 mm (1.0 in).

Wettest day (Rx1day) at Bajio de Ahuichila by year
Year	Wettest day (Rx1day)
1967	23.9 mm (0.9 in)
1968	39.4 mm (1.6 in)
1969	16.8 mm (0.7 in)
1970	25.9 mm (1.0 in)
1971	38.4 mm (1.5 in)
1972	26.9 mm (1.1 in)
1973	39.9 mm (1.6 in)
1974	34.8 mm (1.4 in)
1975	15.0 mm (0.6 in)
1976	31.8 mm (1.3 in)
1977	24.9 mm (1.0 in)
1978	30.0 mm (1.2 in)
1979	19.8 mm (0.8 in)
1980	25.9 mm (1.0 in)
1981	20.8 mm (0.8 in)
1982	45.0 mm (1.8 in)
1983	32.8 mm (1.3 in)
1984	25.9 mm (1.0 in)
1985	47.8 mm (1.9 in)
1986	30.0 mm (1.2 in)
1987	39.9 mm (1.6 in)
1988	32.8 mm (1.3 in)
1989	18.3 mm (0.7 in)
1990	47.8 mm (1.9 in)
1991	40.9 mm (1.6 in)
1992	24.9 mm (1.0 in)
1993	23.9 mm (0.9 in)
1994	84.8 mm (3.3 in)
1995	40.9 mm (1.6 in)
1996	15.0 mm (0.6 in)
1997	15.7 mm (0.6 in)
1998	17.8 mm (0.7 in)
1999	11.9 mm (0.5 in)
2000	19.8 mm (0.8 in)
2001	19.8 mm (0.8 in)
2002	79.8 mm (3.1 in)
2003	45.0 mm (1.8 in)
2004	24.9 mm (1.0 in)
2005	20.3 mm (0.8 in)
2006	27.9 mm (1.1 in)
2007	7.9 mm (0.31 in)
2008	18.8 mm (0.7 in)
2009	0.0 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at Bajio de Ahuichila, 1967 to 2009. The record is 121.2 mm (4.8 in) in 2002, marked on the chart; the median year is 48.3 mm (1.9 in).

Wettest five days (Rx5day) at Bajio de Ahuichila by year
Year	Wettest five days (Rx5day)
1967	34.1 mm (1.3 in)
1968	71.9 mm (2.8 in)
1969	33.6 mm (1.3 in)
1970	42.9 mm (1.7 in)
1971	63.5 mm (2.5 in)
1972	44.9 mm (1.8 in)
1973	62.3 mm (2.5 in)
1974	34.8 mm (1.4 in)
1975	26.2 mm (1.0 in)
1976	54.6 mm (2.1 in)
1977	53.6 mm (2.1 in)
1978	53.6 mm (2.1 in)
1979	19.8 mm (0.8 in)
1980	42.4 mm (1.7 in)
1981	35.1 mm (1.4 in)
1982	61.8 mm (2.4 in)
1983	53.9 mm (2.1 in)
1984	58.7 mm (2.3 in)
1985	58.7 mm (2.3 in)
1986	72.9 mm (2.9 in)
1987	50.6 mm (2.0 in)
1988	49.6 mm (2.0 in)
1989	25.4 mm (1.0 in)
1990	50.2 mm (2.0 in)
1991	91.5 mm (3.6 in)
1992	57.4 mm (2.3 in)
1993	31.5 mm (1.2 in)
1994	94.5 mm (3.7 in)
1995	58.7 mm (2.3 in)
1996	19.6 mm (0.8 in)
1997	20.3 mm (0.8 in)
1998	48.3 mm (1.9 in)
1999	25.6 mm (1.0 in)
2000	34.9 mm (1.4 in)
2001	37.5 mm (1.5 in)
2002	121.2 mm (4.8 in)
2003	75.8 mm (3.0 in)
2004	42.4 mm (1.7 in)
2005	37.4 mm (1.5 in)
2006	51.8 mm (2.0 in)
2007	18.6 mm (0.7 in)
2008	31.5 mm (1.2 in)
2009	0.0 mm (0.00 in)

Longest dry spell (CDD)

The longest dry spell of the year at Bajio de Ahuichila, 1967 to 2009. The record is 176 days in 1969, marked on the chart; the median year is 91 days.

Longest dry spell (CDD) at Bajio de Ahuichila by year
Year	Longest dry spell (CDD)
1967	44 days
1968	63 days
1969	176 days
1970	90 days
1971	124 days
1972	74 days
1973	87 days
1974	135 days
1975	158 days
1976	91 days
1977	130 days
1978	83 days
1979	98 days
1980	136 days
1981	77 days
1982	110 days
1983	71 days
1984	97 days
1985	43 days
1986	65 days
1987	61 days
1988	96 days
1989	147 days
1990	112 days
1991	121 days
1992	91 days
1993	113 days
1994	73 days
1995	145 days
1996	152 days
1997	64 days
1998	159 days
1999	165 days
2000	59 days
2001	69 days
2002	59 days
2003	73 days
2004	45 days
2005	90 days
2006	128 days
2007	124 days
2008	107 days
2009	59 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.

Frost Dates and Growing Season

26 years with a frost

Across 26 years with a frost, the median last spring frost at Bajio de Ahuichila falls on 19 March and the median first autumn frost on 14 November, which leaves a median of 241 days between them.

Fitted over all years, the growing season changes by +3.8 days per decade at this station.

Frost dates and growing season at Bajio de Ahuichila
Measure	Median, all years	Earliest period	Recent period (1978 to 2008)	Recent against earliest	Fitted trend
Last spring frost	19 March	n/a	19 March	n/a	-2.0 days per decade
First autumn frost	14 November	n/a	14 November	n/a	+1.7 days per decade
Growing days	241 days	n/a	241 days	n/a	+3.8 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

38 years, 1968 to 2008

A day with at least 28.0 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 89.2 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Bajio de Ahuichila: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	28.0 mm (1.1 in)
5 years	41.0 mm (1.6 in)
10 years	50.9 mm (2.0 in)
25 years	64.8 mm (2.6 in)
50 years	76.5 mm (3.0 in)	Longer than the 38 years of record
100 years	89.2 mm (3.5 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 1968 to 2008.

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: 84.8 mm (3.3 in) in 1994; 79.8 mm (3.1 in) in 2002; 47.8 mm (1.9 in) in 1985.

Download the Data

Data for Bajio de Ahuichila standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bajio de Ahuichila 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).