Tepeji del Rio Weather Records (MXN00013089)

Record envelope, standing records and threshold days for Tepeji del Rio (MXN00013089), Mexico, with 60 years of record.

Key Facts for Tepeji del Rio

Tepeji del Rio (MXN00013089) is a weather station in Mexico at 19.90 latitude and -99.33 longitude, 2,150 m (7,053 ft) above sea level.
The station reports from 1953 to 2012, 60 years of record.
1,464 records set at Tepeji del Rio still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Tepeji del Rio set a daily record low minimum temperature of 6.7 C (44.1 F) on 30 July 2012.

About the Station

Location: Mexico, 19.90 latitude, -99.33 longitude.
Elevation: 2,150 m (7,053 ft).
Period of record: 1953 to 2012, 60 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 Tepeji del Rio. 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 Tepeji del Rio, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	29.4 C (84.9 F)	-9.4 C (15.1 F)	n/a	n/a
Feb	32.2 C (90.0 F)	-8.3 C (17.1 F)	n/a	n/a
Mar	35.0 C (95.0 F)	-3.9 C (25.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-1.1 C (30.0 F)	n/a	n/a
May	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	0.6 C (33.1 F)	n/a	n/a
Jul	31.7 C (89.1 F)	0.0 C (32.0 F)	n/a	n/a
Aug	32.8 C (91.0 F)	0.0 C (32.0 F)	n/a	n/a
Sep	30.0 C (86.0 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	31.1 C (88.0 F)	-2.2 C (28.0 F)	n/a	n/a
Nov	29.4 C (84.9 F)	-7.2 C (19.0 F)	n/a	n/a
Dec	30.6 C (87.1 F)	-6.1 C (21.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tepeji del Rio still stand. 1967 holds the most, with 147.

Standing records at Tepeji del Rio by the year they were set
Year set	Standing records
1953	32
1954	40
1955	48
1956	37
1957	27
1958	28
1959	28
1960	35
1961	32
1962	20
1963	26
1964	21
1965	16
1966	22
1967	147
1968	18
1969	10
1970	17
1971	13
1972	13
1973	25
1974	19
1975	14
1976	29
1977	19
1978	14
1979	27
1980	22
1981	18
1982	15
1983	24
1984	20
1985	6
1986	21
1987	37
1988	24
1989	26
1990	14
1991	15
1992	19
1993	10
1994	11
1995	28
1996	22
1997	32
1998	49
1999	23
2000	8
2001	9
2002	16
2003	43
2004	19
2005	21
2006	11
2007	11
2008	8
2009	20
2010	37
2011	34
2012	14

All-Time Record Progression

2 new records

2 all-time records were set at Tepeji del Rio between 2 May 1983 and 10 June 1994. Each dot is a new record.

When Tepeji del Rio set new all-time records
Date	Kind	Detail
1983-05-02	Record high maximum temperature	Record high maximum temperature 35.6 C (96.1 F)
1994-06-10	Record high minimum temperature	Record high minimum temperature 16.1 C (61.0 F)

Wettest Day of Each Month

Jul: 134.9 mm (5.3 in)

The wettest day on record for each calendar month at Tepeji del Rio. The most was 134.9 mm (5.3 in) on 31 July 1955.

Record daily precipitation for each month at Tepeji del Rio
Month	Record daily precipitation (mm)	Date
Jan	29.0 mm (1.1 in)	28 January 1992
Feb	29.0 mm (1.1 in)	3 February 2010
Mar	33.8 mm (1.3 in)	26 March 1971
Apr	45.5 mm (1.8 in)	12 April 2008
May	64.8 mm (2.6 in)	25 May 1974
Jun	74.4 mm (2.9 in)	20 June 2011
Jul	134.9 mm (5.3 in)	31 July 1955
Aug	79.8 mm (3.1 in)	17 August 1988
Sep	68.8 mm (2.7 in)	27 September 1978
Oct	59.9 mm (2.4 in)	25 October 1957
Nov	57.9 mm (2.3 in)	5 November 2002
Dec	27.7 mm (1.1 in)	8 December 2003

Period of Record Coverage

1953 to 2012

60 years of record at Tepeji del Rio, 1953 to 2012. 11 years have data for under 90 percent of days and are left out of rankings: 1953, 1955, 1956, 1957, 1958, 1960, 1961, 2000 and others.

Days with data per year at Tepeji del Rio
Year	Days with data	Share of year	Complete
1953	199	55%	No
1954	338	93%	Yes
1955	324	89%	No
1956	310	85%	No
1957	318	87%	No
1958	296	81%	No
1959	340	93%	Yes
1960	308	84%	No
1961	278	76%	No
1962	344	94%	Yes
1963	351	96%	Yes
1964	348	95%	Yes
1965	342	94%	Yes
1966	355	97%	Yes
1967	351	96%	Yes
1968	353	96%	Yes
1969	354	97%	Yes
1970	347	95%	Yes
1971	348	95%	Yes
1972	356	97%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	361	99%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	351	96%	Yes
1989	365	100%	Yes
1990	362	99%	Yes
1991	364	100%	Yes
1992	353	96%	Yes
1993	336	92%	Yes
1994	348	95%	Yes
1995	350	96%	Yes
1996	358	98%	Yes
1997	341	93%	Yes
1998	341	93%	Yes
1999	353	97%	Yes
2000	304	83%	No
2001	298	82%	No
2002	362	99%	Yes
2003	365	100%	Yes
2004	358	98%	Yes
2005	357	98%	Yes
2006	365	100%	Yes
2007	306	84%	No
2008	365	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	177	48%	No

Latest Records

Latest records at Tepeji del Rio
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 2012	Tepeji del Rio, MX	daily low min	6.7 C (44.1 F)	1.1 C (2.0 F)	45 years	24 of 100 (Routine)
29 July 2012	Tepeji del Rio, MX	daily low min	5.6 C (42.1 F)	2.2 C (4.0 F)	56 years	33 of 100 (Routine)
26 July 2012	Tepeji del Rio, MX	daily low min	5.6 C (42.1 F)	1.1 C (2.0 F)	48 years	25 of 100 (Routine)
25 July 2012	Tepeji del Rio, MX	daily low min	5.0 C (41.0 F)	1.7 C (3.1 F)	36 years	24 of 100 (Routine)
23 July 2012	Tepeji del Rio, MX	daily low min (Tie)	6.7 C (44.1 F)	tie	13 years	2 of 100 (Routine)
19 July 2012	Tepeji del Rio, MX	daily low min	5.6 C (42.1 F)	1.6 C (2.9 F)	48 years	28 of 100 (Routine)
13 July 2012	Tepeji del Rio, MX	daily low min (Tie)	6.7 C (44.1 F)	tie	45 years	4 of 100 (Routine)
9 July 2012	Tepeji del Rio, MX	daily low min	6.7 C (44.1 F)	1.6 C (2.9 F)	18 years	19 of 100 (Routine)
8 July 2012	Tepeji del Rio, MX	daily low min (Tie)	7.8 C (46.0 F)	tie	45 years	4 of 100 (Routine)
1 July 2012	Tepeji del Rio, MX	daily low min	5.6 C (42.1 F)	1.1 C (2.0 F)	45 years	24 of 100 (Routine)
26 April 2012	Tepeji del Rio, MX	daily low min (Tie)	3.9 C (39.0 F)	tie	15 years	2 of 100 (Routine)
29 March 2012	Tepeji del Rio, MX	monthly high max	35.0 C (95.0 F)	1.7 C (3.1 F)	13 years	25 of 100 (Routine)
2 March 2012	Tepeji del Rio, MX	daily high max	31.1 C (88.0 F)	0.5 C (0.9 F)	21 years	13 of 100 (Routine)
29 February 2012	Tepeji del Rio, MX	daily high max	29.4 C (84.9 F)	1.6 C (2.9 F)	12 years	13 of 100 (Routine)
24 February 2012	Tepeji del Rio, MX	daily rain	4.1 mm (0.16 in)	1.3 mm (0.05 in)	28 years	16 of 100 (Routine)
18 February 2012	Tepeji del Rio, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	38 years	4 of 100 (Routine)
15 February 2012	Tepeji del Rio, MX	daily high min	10.0 C (50.0 F)	4.4 C (7.9 F)	26 years	30 of 100 (Routine)
14 February 2012	Tepeji del Rio, MX	monthly high min (Tie)	10.6 C (51.1 F)	tie	58 years	8 of 100 (Routine)
12 February 2012	Tepeji del Rio, MX	daily low max	11.7 C (53.1 F)	0.5 C (0.9 F)	12 years	10 of 100 (Routine)
10 February 2012	Tepeji del Rio, MX	daily low max	13.9 C (57.0 F)	3.9 C (7.0 F)	41 years	29 of 100 (Routine)

Climate Trend

42 complete years, 1954 to 2011

One stripe for each of 42 complete years at Tepeji del Rio, 1954 to 2011. Blue stripes are years cooler than the station's own mean of 16.0 C (60.8 F); red stripes are warmer. The coolest year was 1954, at 14.5 C (58.0 F), and the warmest was 2003, at 17.4 C (63.4 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Tepeji del Rio as warming stripes, 1954 to 2011
Year	Annual mean temperature	Difference from the station mean
1954	14.5 C	-1.54 C
1956	14.5 C	-1.48 C
1959	15.2 C	-0.84 C
1962	15.5 C	-0.49 C
1963	15.3 C	-0.69 C
1964	15.7 C	-0.29 C
1965	15.2 C	-0.80 C
1966	15.3 C	-0.71 C
1967	15.6 C	-0.38 C
1968	15.4 C	-0.59 C
1969	15.9 C	-0.15 C
1970	15.5 C	-0.56 C
1971	15.5 C	-0.47 C
1972	15.8 C	-0.25 C
1973	16.2 C	+0.14 C
1974	15.6 C	-0.44 C
1975	15.8 C	-0.22 C
1976	15.7 C	-0.30 C
1977	16.2 C	+0.17 C
1978	16.4 C	+0.43 C
1979	15.9 C	-0.12 C
1980	16.3 C	+0.29 C
1981	16.4 C	+0.40 C
1982	16.7 C	+0.70 C
1983	16.4 C	+0.37 C
1984	15.9 C	-0.15 C
1985	15.9 C	-0.16 C
1986	16.0 C	-0.06 C
1987	16.2 C	+0.18 C
1989	15.8 C	-0.25 C
1990	16.4 C	+0.34 C
1991	16.7 C	+0.73 C
1999	16.2 C	+0.15 C
2002	16.9 C	+0.92 C
2003	17.4 C	+1.42 C
2004	16.5 C	+0.47 C
2005	16.9 C	+0.86 C
2006	16.7 C	+0.65 C
2008	16.4 C	+0.41 C
2009	17.1 C	+1.06 C
2010	16.4 C	+0.37 C
2011	17.0 C	+0.97 C

The annual mean temperature here has risen by 0.3 C (0.3 to 0.4) per decade over 1954 to 2011. In Fahrenheit: 0.6 F (0.5 to 0.7) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tepeji del Rio
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.3 to 0.4) per decade	0.6 F (0.5 to 0.7) per decade	1954 to 2011	42	Rise
Mean daily maximum	0.5 C (0.4 to 0.6) per decade	0.9 F (0.7 to 1.1) per decade	1954 to 2011	42	Rise
Mean daily minimum	0.16 C (0.03 to 0.30) per decade	0.3 F (0.1 to 0.5) per decade	1954 to 2011	42	Rise

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

1953 to 2012

Yearly extremes at Tepeji del Rio: 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)	1983	32.2 C (90.0 F)	60
Coldest night (TNn)	-9.4 C (15.1 F)	1956	-3.9 C (25.0 F)	60
Wettest day (Rx1day)	134.9 mm (5.3 in)	1955	44.2 mm (1.7 in)	60
Wettest five days (Rx5day)	176.9 mm (7.0 in)	1955	88.7 mm (3.5 in)	60
Longest dry spell (CDD)	127 days	1998	56 days	60

Hottest day (TXx)

The hottest day of the year at Tepeji del Rio, 1953 to 2012. The record is 35.6 C (96.1 F) in 1983, marked on the chart; the median year is 32.2 C (90.0 F).

Hottest day (TXx) at Tepeji del Rio by year
Year	Hottest day (TXx)
1953	33.9 C (93.0 F)
1954	30.6 C (87.1 F)
1955	31.1 C (88.0 F)
1956	30.6 C (87.1 F)
1957	30.6 C (87.1 F)
1958	31.7 C (89.1 F)
1959	30.0 C (86.0 F)
1960	31.7 C (89.1 F)
1961	31.7 C (89.1 F)
1962	30.6 C (87.1 F)
1963	30.6 C (87.1 F)
1964	32.8 C (91.0 F)
1965	30.0 C (86.0 F)
1966	28.9 C (84.0 F)
1967	31.7 C (89.1 F)
1968	30.0 C (86.0 F)
1969	31.7 C (89.1 F)
1970	33.9 C (93.0 F)
1971	32.8 C (91.0 F)
1972	30.0 C (86.0 F)
1973	32.2 C (90.0 F)
1974	32.8 C (91.0 F)
1975	32.8 C (91.0 F)
1976	30.6 C (87.1 F)
1977	33.3 C (91.9 F)
1978	32.8 C (91.0 F)
1979	30.6 C (87.1 F)
1980	31.7 C (89.1 F)
1981	32.2 C (90.0 F)
1982	33.9 C (93.0 F)
1983	35.6 C (96.1 F)
1984	32.2 C (90.0 F)
1985	30.6 C (87.1 F)
1986	31.7 C (89.1 F)
1987	30.6 C (87.1 F)
1988	35.0 C (95.0 F)
1989	33.3 C (91.9 F)
1990	32.8 C (91.0 F)
1991	33.3 C (91.9 F)
1992	30.0 C (86.0 F)
1993	31.7 C (89.1 F)
1994	31.7 C (89.1 F)
1995	33.9 C (93.0 F)
1996	32.8 C (91.0 F)
1997	30.6 C (87.1 F)
1998	35.6 C (96.1 F)
1999	33.3 C (91.9 F)
2000	32.8 C (91.0 F)
2001	31.1 C (88.0 F)
2002	33.3 C (91.9 F)
2003	35.6 C (96.1 F)
2004	31.7 C (89.1 F)
2005	33.9 C (93.0 F)
2006	33.3 C (91.9 F)
2007	31.1 C (88.0 F)
2008	32.8 C (91.0 F)
2009	35.6 C (96.1 F)
2010	33.9 C (93.0 F)
2011	34.4 C (93.9 F)
2012	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Tepeji del Rio, 1953 to 2012. The record is -9.4 C (15.1 F) in 1956, marked on the chart; the median year is -3.9 C (25.0 F).

Coldest night (TNn) at Tepeji del Rio by year
Year	Coldest night (TNn)
1953	-5.0 C (23.0 F)
1954	-5.0 C (23.0 F)
1955	-6.1 C (21.0 F)
1956	-9.4 C (15.1 F)
1957	-3.9 C (25.0 F)
1958	-2.2 C (28.0 F)
1959	-4.4 C (24.1 F)
1960	-5.0 C (23.0 F)
1961	-5.0 C (23.0 F)
1962	-7.2 C (19.0 F)
1963	-8.3 C (17.1 F)
1964	-3.3 C (26.1 F)
1965	-5.0 C (23.0 F)
1966	-4.4 C (24.1 F)
1967	-3.3 C (26.1 F)
1968	-3.3 C (26.1 F)
1969	0.0 C (32.0 F)
1970	-3.9 C (25.0 F)
1971	-1.1 C (30.0 F)
1972	-3.3 C (26.1 F)
1973	-3.3 C (26.1 F)
1974	-5.0 C (23.0 F)
1975	-5.0 C (23.0 F)
1976	-7.2 C (19.0 F)
1977	-1.7 C (28.9 F)
1978	-2.2 C (28.0 F)
1979	-3.3 C (26.1 F)
1980	-3.3 C (26.1 F)
1981	-3.9 C (25.0 F)
1982	-3.3 C (26.1 F)
1983	-3.3 C (26.1 F)
1984	-5.0 C (23.0 F)
1985	-3.3 C (26.1 F)
1986	-7.2 C (19.0 F)
1987	-3.9 C (25.0 F)
1988	-6.7 C (19.9 F)
1989	-5.0 C (23.0 F)
1990	-5.0 C (23.0 F)
1991	0.0 C (32.0 F)
1992	-2.8 C (27.0 F)
1993	-2.8 C (27.0 F)
1994	-1.1 C (30.0 F)
1995	-2.2 C (28.0 F)
1996	-4.4 C (24.1 F)
1997	-6.1 C (21.0 F)
1998	-4.4 C (24.1 F)
1999	-5.0 C (23.0 F)
2000	-2.2 C (28.0 F)
2001	-2.2 C (28.0 F)
2002	-5.0 C (23.0 F)
2003	-1.7 C (28.9 F)
2004	-3.9 C (25.0 F)
2005	-3.3 C (26.1 F)
2006	-5.0 C (23.0 F)
2007	-1.1 C (30.0 F)
2008	-4.4 C (24.1 F)
2009	-2.8 C (27.0 F)
2010	-5.0 C (23.0 F)
2011	-5.0 C (23.0 F)
2012	0.6 C (33.1 F)

Wettest day (Rx1day)

The wettest day of the year at Tepeji del Rio, 1953 to 2012. The record is 134.9 mm (5.3 in) in 1955, marked on the chart; the median year is 44.2 mm (1.7 in).

Wettest day (Rx1day) at Tepeji del Rio by year
Year	Wettest day (Rx1day)
1953	23.9 mm (0.9 in)
1954	31.8 mm (1.3 in)
1955	134.9 mm (5.3 in)
1956	32.3 mm (1.3 in)
1957	59.9 mm (2.4 in)
1958	42.4 mm (1.7 in)
1959	33.3 mm (1.3 in)
1960	25.4 mm (1.0 in)
1961	52.3 mm (2.1 in)
1962	37.8 mm (1.5 in)
1963	45.0 mm (1.8 in)
1964	41.9 mm (1.6 in)
1965	48.8 mm (1.9 in)
1966	58.9 mm (2.3 in)
1967	47.5 mm (1.9 in)
1968	33.8 mm (1.3 in)
1969	34.8 mm (1.4 in)
1970	31.8 mm (1.3 in)
1971	41.9 mm (1.6 in)
1972	38.4 mm (1.5 in)
1973	50.8 mm (2.0 in)
1974	64.8 mm (2.6 in)
1975	43.9 mm (1.7 in)
1976	68.8 mm (2.7 in)
1977	48.8 mm (1.9 in)
1978	68.8 mm (2.7 in)
1979	34.8 mm (1.4 in)
1980	39.4 mm (1.6 in)
1981	39.9 mm (1.6 in)
1982	27.9 mm (1.1 in)
1983	47.0 mm (1.9 in)
1984	63.0 mm (2.5 in)
1985	37.1 mm (1.5 in)
1986	53.8 mm (2.1 in)
1987	34.5 mm (1.4 in)
1988	79.8 mm (3.1 in)
1989	46.2 mm (1.8 in)
1990	52.3 mm (2.1 in)
1991	39.9 mm (1.6 in)
1992	41.4 mm (1.6 in)
1993	40.9 mm (1.6 in)
1994	45.7 mm (1.8 in)
1995	39.9 mm (1.6 in)
1996	34.3 mm (1.4 in)
1997	33.8 mm (1.3 in)
1998	43.9 mm (1.7 in)
1999	35.6 mm (1.4 in)
2000	45.5 mm (1.8 in)
2001	44.5 mm (1.8 in)
2002	57.9 mm (2.3 in)
2003	46.0 mm (1.8 in)
2004	69.9 mm (2.8 in)
2005	50.8 mm (2.0 in)
2006	55.4 mm (2.2 in)
2007	45.0 mm (1.8 in)
2008	45.5 mm (1.8 in)
2009	67.3 mm (2.6 in)
2010	37.8 mm (1.5 in)
2011	74.4 mm (2.9 in)
2012	21.3 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tepeji del Rio, 1953 to 2012. The record is 176.9 mm (7.0 in) in 1955, marked on the chart; the median year is 88.7 mm (3.5 in).

Wettest five days (Rx5day) at Tepeji del Rio by year
Year	Wettest five days (Rx5day)
1953	32.1 mm (1.3 in)
1954	119.0 mm (4.7 in)
1955	176.9 mm (7.0 in)
1956	85.3 mm (3.4 in)
1957	65.2 mm (2.6 in)
1958	118.2 mm (4.7 in)
1959	73.9 mm (2.9 in)
1960	50.5 mm (2.0 in)
1961	89.4 mm (3.5 in)
1962	88.2 mm (3.5 in)
1963	91.5 mm (3.6 in)
1964	80.3 mm (3.2 in)
1965	110.8 mm (4.4 in)
1966	116.0 mm (4.6 in)
1967	89.2 mm (3.5 in)
1968	74.4 mm (2.9 in)
1969	70.2 mm (2.8 in)
1970	62.5 mm (2.5 in)
1971	96.8 mm (3.8 in)
1972	89.9 mm (3.5 in)
1973	125.8 mm (5.0 in)
1974	109.5 mm (4.3 in)
1975	80.0 mm (3.1 in)
1976	151.3 mm (6.0 in)
1977	67.7 mm (2.7 in)
1978	107.4 mm (4.2 in)
1979	62.8 mm (2.5 in)
1980	89.4 mm (3.5 in)
1981	83.4 mm (3.3 in)
1982	57.9 mm (2.3 in)
1983	114.3 mm (4.5 in)
1984	135.2 mm (5.3 in)
1985	84.1 mm (3.3 in)
1986	91.5 mm (3.6 in)
1987	79.5 mm (3.1 in)
1988	95.8 mm (3.8 in)
1989	87.8 mm (3.5 in)
1990	102.5 mm (4.0 in)
1991	84.6 mm (3.3 in)
1992	84.8 mm (3.3 in)
1993	91.7 mm (3.6 in)
1994	79.0 mm (3.1 in)
1995	79.8 mm (3.1 in)
1996	67.3 mm (2.6 in)
1997	57.5 mm (2.3 in)
1998	100.0 mm (3.9 in)
1999	75.8 mm (3.0 in)
2000	65.2 mm (2.6 in)
2001	67.1 mm (2.6 in)
2002	73.6 mm (2.9 in)
2003	88.2 mm (3.5 in)
2004	119.4 mm (4.7 in)
2005	103.4 mm (4.1 in)
2006	93.0 mm (3.7 in)
2007	87.4 mm (3.4 in)
2008	99.9 mm (3.9 in)
2009	132.6 mm (5.2 in)
2010	118.1 mm (4.6 in)
2011	119.2 mm (4.7 in)
2012	99.7 mm (3.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tepeji del Rio, 1953 to 2012. The record is 127 days in 1998, marked on the chart; the median year is 56 days.

Longest dry spell (CDD) at Tepeji del Rio by year
Year	Longest dry spell (CDD)
1953	77 days
1954	57 days
1955	62 days
1956	49 days
1957	50 days
1958	66 days
1959	79 days
1960	96 days
1961	54 days
1962	77 days
1963	58 days
1964	44 days
1965	51 days
1966	68 days
1967	69 days
1968	61 days
1969	115 days
1970	80 days
1971	42 days
1972	58 days
1973	102 days
1974	45 days
1975	65 days
1976	39 days
1977	63 days
1978	27 days
1979	61 days
1980	37 days
1981	45 days
1982	80 days
1983	68 days
1984	34 days
1985	37 days
1986	56 days
1987	63 days
1988	38 days
1989	61 days
1990	35 days
1991	70 days
1992	31 days
1993	44 days
1994	44 days
1995	50 days
1996	91 days
1997	44 days
1998	127 days
1999	90 days
2000	34 days
2001	56 days
2002	38 days
2003	87 days
2004	72 days
2005	54 days
2006	42 days
2007	26 days
2008	47 days
2009	53 days
2010	64 days
2011	56 days
2012	30 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

38 years with a frost

Across 38 years with a frost, the median last spring frost at Tepeji del Rio falls on 4 March and the median first autumn frost on 12 November, which leaves a median of 258 days between them.

Fitted over all years, the growing season changes by +6.3 days per decade at this station.

Frost dates and growing season at Tepeji del Rio
Measure	Median, all years	Earliest period	Recent period (1967 to 2011)	Recent against earliest	Fitted trend
Last spring frost	4 March	n/a	4 March	n/a	-2.2 days per decade
First autumn frost	12 November	n/a	16 November	n/a	+4.0 days per decade
Growing days	258 days	n/a	259 days	n/a	+6.3 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

57 years, 1954 to 2011

A day with at least 43.7 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 110.5 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Tepeji del Rio: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	43.7 mm (1.7 in)
5 years	56.7 mm (2.2 in)
10 years	67.0 mm (2.6 in)
25 years	82.3 mm (3.2 in)
50 years	95.5 mm (3.8 in)
100 years	110.5 mm (4.4 in)	Longer than the 57 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, 57 years of values from 1954 to 2011.

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: 134.9 mm (5.3 in) in 1955; 79.8 mm (3.1 in) in 1988; 74.4 mm (2.9 in) in 2011.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Tepeji del Rio, at 1979. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1979 ran 0.3 C (0.5 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at Tepeji del Rio, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1979	-0.3	-0.5	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

Data for Tepeji del Rio standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tepeji del Rio 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).