Concepcion de la Norma Weather Records (MXN00032011)

Record envelope, standing records and threshold days for Concepcion de la Norma (MXN00032011), Mexico, with 69 years of record.

Key Facts for Concepcion de la Norma

Concepcion de la Norma (MXN00032011) is a weather station in Mexico at 23.83 latitude and -101.95 longitude, 2,011 m (6,597 ft) above sea level.
The station reports from 1944 to 2012, 69 years of record.
1,464 records set at Concepcion de la Norma still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Concepcion de la Norma set a daily record precipitation of 3.8 mm (0.15 in) on 31 December 2012.

About the Station

Location: Mexico, 23.83 latitude, -101.95 longitude.
Elevation: 2,011 m (6,597 ft).
Period of record: 1944 to 2012, 69 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 Concepcion de la Norma. 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 Concepcion de la Norma, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.6 C (87.1 F)	-9.4 C (15.1 F)	n/a	n/a
Feb	33.9 C (93.0 F)	-9.4 C (15.1 F)	n/a	n/a
Mar	31.1 C (88.0 F)	-9.4 C (15.1 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-2.2 C (28.0 F)	n/a	n/a
May	35.6 C (96.1 F)	3.9 C (39.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	2.8 C (37.0 F)	n/a	n/a
Jul	33.9 C (93.0 F)	3.9 C (39.0 F)	n/a	n/a
Aug	35.0 C (95.0 F)	8.9 C (48.0 F)	n/a	n/a
Sep	31.7 C (89.1 F)	1.7 C (35.1 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-3.3 C (26.1 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-9.4 C (15.1 F)	n/a	n/a
Dec	30.0 C (86.0 F)	-9.4 C (15.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Concepcion de la Norma still stand. 2000 holds the most, with 211.

Standing records at Concepcion de la Norma by the year they were set
Year set	Standing records
1988	183
1991	53
1992	62
1993	50
1994	37
1995	106
1996	85
1997	99
1998	136
1999	22
2000	211
2001	63
2002	53
2003	48
2004	39
2005	34
2006	36
2008	35
2009	36
2010	15
2011	38
2012	23

Wettest Day of Each Month

Aug: 119.9 mm (4.7 in)

The wettest day on record for each calendar month at Concepcion de la Norma. The most was 119.9 mm (4.7 in) on 27 August 1945.

Record daily precipitation for each month at Concepcion de la Norma
Month	Record daily precipitation (mm)	Date
Jan	30.0 mm (1.2 in)	25 January 1992
Feb	49.8 mm (2.0 in)	28 February 1967
Mar	20.3 mm (0.8 in)	9 March 1972
Apr	27.9 mm (1.1 in)	13 April 1959
May	62.5 mm (2.5 in)	5 May 1990
Jun	59.9 mm (2.4 in)	23 June 1966
Jul	69.9 mm (2.8 in)	19 July 1969
Aug	119.9 mm (4.7 in)	27 August 1945
Sep	95.0 mm (3.7 in)	14 September 1951
Oct	61.0 mm (2.4 in)	31 October 1985
Nov	45.5 mm (1.8 in)	2 November 1958
Dec	31.8 mm (1.3 in)	22 December 1958

Period of Record Coverage

1988 to 2012

22 years of record at Concepcion de la Norma, 1988 to 2012. 6 years have data for under 90 percent of days and are left out of rankings: 1988, 1991, 1999, 2000, 2009, 2010.

Days with data per year at Concepcion de la Norma
Year	Days with data	Share of year	Complete
1988	104	28%	No
1991	304	83%	No
1992	335	92%	Yes
1993	350	96%	Yes
1994	365	100%	Yes
1995	364	100%	Yes
1996	364	99%	Yes
1997	363	99%	Yes
1998	364	100%	Yes
1999	151	41%	No
2000	305	83%	No
2001	364	100%	Yes
2002	365	100%	Yes
2003	334	92%	Yes
2004	366	100%	Yes
2005	333	91%	Yes
2006	334	92%	Yes
2008	335	92%	Yes
2009	299	82%	No
2010	182	50%	No
2011	361	99%	Yes
2012	366	100%	Yes

Latest Records

Latest records at Concepcion de la Norma
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 December 2012	Concepcion de la Norma, MX	daily rain	3.8 mm (0.15 in)	3.0 mm (0.12 in)	62 years	20 of 100 (Routine)
27 October 2012	Concepcion de la Norma, MX	daily rain	8.9 mm (0.35 in)	2.0 mm (0.08 in)	39 years	19 of 100 (Routine)
9 April 2012	Concepcion de la Norma, MX	daily rain (Tie)	8.9 mm (0.35 in)	tie	27 years	3 of 100 (Routine)
11 February 2012	Concepcion de la Norma, MX	daily rain	6.9 mm (0.27 in)	1.1 mm (0.04 in)	9 years	9 of 100 (Routine)
9 February 2012	Concepcion de la Norma, MX	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	66 years	20 of 100 (Routine)
8 February 2012	Concepcion de la Norma, MX	daily rain	6.9 mm (0.27 in)	5.1 mm (0.20 in)	16 years	17 of 100 (Routine)
31 December 2011	Concepcion de la Norma, MX	daily rain (Tie)	0.8 mm (0.03 in)	tie	60 years	6 of 100 (Routine)
12 August 2011	Concepcion de la Norma, MX	daily rain (Tie)	18.8 mm (0.7 in)	tie	56 years	5 of 100 (Routine)
28 August 2008	Concepcion de la Norma, MX	daily rain	59.9 mm (2.4 in)	35.0 mm (1.4 in)	30 years	41 of 100 (Notable)
24 August 2008	Concepcion de la Norma, MX	daily rain	27.9 mm (1.1 in)	13.9 mm (0.5 in)	55 years	32 of 100 (Routine)
18 July 2008	Concepcion de la Norma, MX	daily rain	15.0 mm (0.6 in)	8.1 mm (0.32 in)	59 years	20 of 100 (Routine)
3 July 2008	Concepcion de la Norma, MX	daily rain	14.0 mm (0.6 in)	2.1 mm (0.08 in)	47 years	20 of 100 (Routine)
9 June 2008	Concepcion de la Norma, MX	daily rain	9.4 mm (0.37 in)	3.6 mm (0.14 in)	8 years	11 of 100 (Routine)
11 May 2008	Concepcion de la Norma, MX	daily rain	19.8 mm (0.8 in)	12.9 mm (0.5 in)	18 years	20 of 100 (Routine)
10 February 2008	Concepcion de la Norma, MX	daily rain	7.9 mm (0.31 in)	3.1 mm (0.12 in)	12 years	13 of 100 (Routine)
9 September 2006	Concepcion de la Norma, MX	daily rain	19.8 mm (0.8 in)	4.3 mm (0.17 in)	57 years	20 of 100 (Routine)
8 September 2006	Concepcion de la Norma, MX	daily rain	39.9 mm (1.6 in)	22.4 mm (0.9 in)	12 years	28 of 100 (Routine)
3 August 2006	Concepcion de la Norma, MX	daily rain	39.9 mm (1.6 in)	9.4 mm (0.37 in)	11 years	16 of 100 (Routine)
16 May 2006	Concepcion de la Norma, MX	daily rain	16.8 mm (0.7 in)	8.4 mm (0.33 in)	32 years	20 of 100 (Routine)
8 December 2005	Concepcion de la Norma, MX	daily rain	10.9 mm (0.4 in)	3.0 mm (0.12 in)	40 years	20 of 100 (Routine)

Climate Trend

10 complete years, 1994 to 2012

One stripe for each of 10 complete years at Concepcion de la Norma, 1994 to 2012. Blue stripes are years cooler than the station's own mean of 17.4 C (63.4 F); red stripes are warmer. The coolest year was 2004, at 16.4 C (61.6 F), and the warmest was 2011, at 18.3 C (65.0 F). The strongest colour marks a difference of 1.0 C (1.8 F).

Annual mean temperature at Concepcion de la Norma as warming stripes, 1994 to 2012
Year	Annual mean temperature	Difference from the station mean
1994	16.6 C	-0.86 C
1995	17.7 C	+0.22 C
1996	17.2 C	-0.28 C
1997	17.0 C	-0.47 C
1998	17.7 C	+0.23 C
2001	17.4 C	-0.02 C
2002	18.1 C	+0.62 C
2004	16.4 C	-1.00 C
2011	18.3 C	+0.91 C
2012	18.1 C	+0.64 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

1944 to 2012

Yearly extremes at Concepcion de la Norma: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1996	32.3 C (90.1 F)	22
Coldest night (TNn)	-9.4 C (15.1 F)	2001	-6.1 C (21.0 F)	22
Wettest day (Rx1day)	119.9 mm (4.7 in)	1945	39.9 mm (1.6 in)	67
Wettest five days (Rx5day)	171.4 mm (6.7 in)	1968	69.3 mm (2.7 in)	67
Longest dry spell (CDD)	181 days	1999	79 days	67

Hottest day (TXx)

The hottest day of the year at Concepcion de la Norma, 1944 to 2012. The record is 35.6 C (96.1 F) in 1996, marked on the chart; the median year is 32.3 C (90.1 F).

Hottest day (TXx) at Concepcion de la Norma by year
Year	Hottest day (TXx)
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
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	20.0 C (68.0 F)
1990	n/a
1991	32.8 C (91.0 F)
1992	30.6 C (87.1 F)
1993	34.4 C (93.9 F)
1994	30.6 C (87.1 F)
1995	35.0 C (95.0 F)
1996	35.6 C (96.1 F)
1997	33.9 C (93.0 F)
1998	35.6 C (96.1 F)
1999	33.9 C (93.0 F)
2000	33.9 C (93.0 F)
2001	35.0 C (95.0 F)
2002	31.7 C (89.1 F)
2003	31.7 C (89.1 F)
2004	31.7 C (89.1 F)
2005	30.6 C (87.1 F)
2006	31.7 C (89.1 F)
2008	31.7 C (89.1 F)
2009	35.0 C (95.0 F)
2010	30.0 C (86.0 F)
2011	31.7 C (89.1 F)
2012	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Concepcion de la Norma, 1944 to 2012. The record is -9.4 C (15.1 F) in 2001, marked on the chart; the median year is -6.1 C (21.0 F).

Coldest night (TNn) at Concepcion de la Norma by year
Year	Coldest night (TNn)
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
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	13.9 C (57.0 F)
1990	n/a
1991	-8.3 C (17.1 F)
1992	-3.3 C (26.1 F)
1993	-3.3 C (26.1 F)
1994	-7.2 C (19.0 F)
1995	-5.0 C (23.0 F)
1996	-5.0 C (23.0 F)
1997	-6.1 C (21.0 F)
1998	-4.4 C (24.1 F)
1999	-1.1 C (30.0 F)
2000	-2.2 C (28.0 F)
2001	-9.4 C (15.1 F)
2002	-8.3 C (17.1 F)
2003	-6.1 C (21.0 F)
2004	-4.4 C (24.1 F)
2005	-9.4 C (15.1 F)
2006	-9.4 C (15.1 F)
2008	-3.3 C (26.1 F)
2009	-9.4 C (15.1 F)
2010	-9.4 C (15.1 F)
2011	-9.4 C (15.1 F)
2012	-9.4 C (15.1 F)

Wettest day (Rx1day)

The wettest day of the year at Concepcion de la Norma, 1944 to 2012. The record is 119.9 mm (4.7 in) in 1945, marked on the chart; the median year is 39.9 mm (1.6 in).

Wettest day (Rx1day) at Concepcion de la Norma by year
Year	Wettest day (Rx1day)
1944	62.0 mm (2.4 in)
1945	119.9 mm (4.7 in)
1946	22.9 mm (0.9 in)
1947	20.3 mm (0.8 in)
1948	39.9 mm (1.6 in)
1949	27.9 mm (1.1 in)
1950	31.8 mm (1.3 in)
1951	95.0 mm (3.7 in)
1952	20.3 mm (0.8 in)
1953	41.9 mm (1.6 in)
1954	30.5 mm (1.2 in)
1955	82.3 mm (3.2 in)
1956	22.4 mm (0.9 in)
1957	50.8 mm (2.0 in)
1958	47.8 mm (1.9 in)
1959	39.9 mm (1.6 in)
1960	79.8 mm (3.1 in)
1961	63.0 mm (2.5 in)
1962	20.8 mm (0.8 in)
1963	18.3 mm (0.7 in)
1964	41.9 mm (1.6 in)
1965	39.9 mm (1.6 in)
1966	59.9 mm (2.4 in)
1967	49.8 mm (2.0 in)
1968	59.9 mm (2.4 in)
1969	69.9 mm (2.8 in)
1970	35.8 mm (1.4 in)
1971	20.8 mm (0.8 in)
1972	59.9 mm (2.4 in)
1973	64.8 mm (2.6 in)
1974	14.0 mm (0.6 in)
1975	41.9 mm (1.6 in)
1976	30.0 mm (1.2 in)
1977	46.0 mm (1.8 in)
1978	31.5 mm (1.2 in)
1979	24.9 mm (1.0 in)
1980	24.9 mm (1.0 in)
1981	49.8 mm (2.0 in)
1982	42.9 mm (1.7 in)
1983	43.4 mm (1.7 in)
1984	35.6 mm (1.4 in)
1985	61.0 mm (2.4 in)
1986	37.8 mm (1.5 in)
1987	52.3 mm (2.1 in)
1988	37.8 mm (1.5 in)
1990	62.5 mm (2.5 in)
1991	38.9 mm (1.5 in)
1992	46.0 mm (1.8 in)
1993	27.4 mm (1.1 in)
1994	42.4 mm (1.7 in)
1995	39.9 mm (1.6 in)
1996	19.8 mm (0.8 in)
1997	33.8 mm (1.3 in)
1998	38.9 mm (1.5 in)
1999	0.8 mm (0.03 in)
2000	20.8 mm (0.8 in)
2001	84.8 mm (3.3 in)
2002	51.8 mm (2.0 in)
2003	47.0 mm (1.9 in)
2004	78.0 mm (3.1 in)
2005	47.0 mm (1.9 in)
2006	39.9 mm (1.6 in)
2008	59.9 mm (2.4 in)
2009	20.8 mm (0.8 in)
2010	20.8 mm (0.8 in)
2011	19.8 mm (0.8 in)
2012	33.8 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Concepcion de la Norma, 1944 to 2012. The record is 171.4 mm (6.7 in) in 1968, marked on the chart; the median year is 69.3 mm (2.7 in).

Wettest five days (Rx5day) at Concepcion de la Norma by year
Year	Wettest five days (Rx5day)
1944	82.0 mm (3.2 in)
1945	151.6 mm (6.0 in)
1946	32.7 mm (1.3 in)
1947	55.3 mm (2.2 in)
1948	92.0 mm (3.6 in)
1949	46.2 mm (1.8 in)
1950	51.4 mm (2.0 in)
1951	143.3 mm (5.6 in)
1952	21.8 mm (0.9 in)
1953	107.1 mm (4.2 in)
1954	38.9 mm (1.5 in)
1955	115.1 mm (4.5 in)
1956	50.7 mm (2.0 in)
1957	93.0 mm (3.7 in)
1958	93.1 mm (3.7 in)
1959	86.7 mm (3.4 in)
1960	108.3 mm (4.3 in)
1961	80.0 mm (3.1 in)
1962	22.4 mm (0.9 in)
1963	33.0 mm (1.3 in)
1964	53.1 mm (2.1 in)
1965	70.1 mm (2.8 in)
1966	143.9 mm (5.7 in)
1967	85.8 mm (3.4 in)
1968	171.4 mm (6.7 in)
1969	82.9 mm (3.3 in)
1970	57.1 mm (2.2 in)
1971	49.0 mm (1.9 in)
1972	93.7 mm (3.7 in)
1973	118.0 mm (4.6 in)
1974	14.8 mm (0.6 in)
1975	89.7 mm (3.5 in)
1976	107.4 mm (4.2 in)
1977	84.2 mm (3.3 in)
1978	64.7 mm (2.5 in)
1979	44.0 mm (1.7 in)
1980	50.6 mm (2.0 in)
1981	104.4 mm (4.1 in)
1982	60.7 mm (2.4 in)
1983	67.4 mm (2.7 in)
1984	83.1 mm (3.3 in)
1985	61.0 mm (2.4 in)
1986	68.5 mm (2.7 in)
1987	52.3 mm (2.1 in)
1988	95.3 mm (3.8 in)
1990	93.3 mm (3.7 in)
1991	69.9 mm (2.8 in)
1992	58.8 mm (2.3 in)
1993	42.6 mm (1.7 in)
1994	112.2 mm (4.4 in)
1995	69.3 mm (2.7 in)
1996	55.5 mm (2.2 in)
1997	53.6 mm (2.1 in)
1998	58.4 mm (2.3 in)
1999	0.8 mm (0.03 in)
2000	67.3 mm (2.6 in)
2001	87.4 mm (3.4 in)
2002	73.4 mm (2.9 in)
2003	86.9 mm (3.4 in)
2004	103.4 mm (4.1 in)
2005	60.7 mm (2.4 in)
2006	99.3 mm (3.9 in)
2008	117.6 mm (4.6 in)
2009	21.6 mm (0.9 in)
2010	40.6 mm (1.6 in)
2011	34.6 mm (1.4 in)
2012	36.6 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Concepcion de la Norma, 1944 to 2012. The record is 181 days in 1999, marked on the chart; the median year is 79 days.

Longest dry spell (CDD) at Concepcion de la Norma by year
Year	Longest dry spell (CDD)
1944	44 days
1945	66 days
1946	48 days
1947	64 days
1948	50 days
1949	76 days
1950	89 days
1951	119 days
1952	135 days
1953	69 days
1954	74 days
1955	122 days
1956	144 days
1957	78 days
1958	68 days
1959	67 days
1960	63 days
1961	133 days
1962	100 days
1963	57 days
1964	108 days
1965	47 days
1966	79 days
1967	74 days
1968	100 days
1969	129 days
1970	101 days
1971	91 days
1972	68 days
1973	113 days
1974	135 days
1975	127 days
1976	170 days
1977	103 days
1978	90 days
1979	96 days
1980	64 days
1981	36 days
1982	111 days
1983	127 days
1984	90 days
1985	43 days
1986	77 days
1987	42 days
1988	56 days
1990	68 days
1991	125 days
1992	90 days
1993	60 days
1994	73 days
1995	102 days
1996	86 days
1997	52 days
1998	159 days
1999	181 days
2000	140 days
2001	53 days
2002	54 days
2003	71 days
2004	45 days
2005	81 days
2006	110 days
2008	71 days
2009	131 days
2010	31 days
2011	180 days
2012	57 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

52 years, 1945 to 2012

A day with at least 40.2 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 112.7 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Concepcion de la Norma: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.2 mm (1.6 in)
5 years	57.7 mm (2.3 in)
10 years	70.0 mm (2.8 in)
25 years	86.5 mm (3.4 in)
50 years	99.4 mm (3.9 in)
100 years	112.7 mm (4.4 in)	Longer than the 52 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, 52 years of values from 1945 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: 119.9 mm (4.7 in) in 1945; 95.0 mm (3.7 in) in 1951; 84.8 mm (3.3 in) in 2001.

Download the Data

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