Tilzapotla Weather Records (MXN00017019)

Record envelope, standing records and threshold days for Tilzapotla (MXN00017019), Mexico, with 71 years of record.

Key Facts for Tilzapotla

Tilzapotla (MXN00017019) is a weather station in Mexico at 18.48 latitude and -99.30 longitude, 1,303 m (4,274 ft) above sea level.
The station reports from 1942 to 2012, 71 years of record.
1,464 records set at Tilzapotla still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Tilzapotla set a daily record precipitation of 41.7 mm (1.6 in) on 29 October 2012.

About the Station

Location: Mexico, 18.48 latitude, -99.30 longitude.
Elevation: 1,303 m (4,274 ft).
Period of record: 1942 to 2012, 71 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 Tilzapotla. 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 Tilzapotla, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	39.4 C (102.9 F)	5.0 C (41.0 F)	n/a	n/a
Feb	41.7 C (107.1 F)	2.8 C (37.0 F)	n/a	n/a
Mar	43.3 C (109.9 F)	8.9 C (48.0 F)	n/a	n/a
Apr	45.6 C (114.1 F)	11.7 C (53.1 F)	n/a	n/a
May	43.9 C (111.0 F)	11.7 C (53.1 F)	n/a	n/a
Jun	43.9 C (111.0 F)	13.9 C (57.0 F)	n/a	n/a
Jul	40.0 C (104.0 F)	10.6 C (51.1 F)	n/a	n/a
Aug	41.7 C (107.1 F)	10.6 C (51.1 F)	n/a	n/a
Sep	38.9 C (102.0 F)	10.0 C (50.0 F)	n/a	n/a
Oct	38.9 C (102.0 F)	8.9 C (48.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	6.7 C (44.1 F)	n/a	n/a
Dec	38.9 C (102.0 F)	2.8 C (37.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tilzapotla still stand. 2007 holds the most, with 103.

Standing records at Tilzapotla by the year they were set
Year set	Standing records
1942	48
1943	82
1944	3
1945	4
1946	11
1947	12
1948	5
1949	18
1950	31
1951	6
1952	16
1953	12
1954	3
1955	20
1956	15
1957	4
1958	2
1959	4
1960	45
1962	95
1963	32
1964	39
1965	15
1966	23
1967	16
1968	17
1970	17
1971	16
1972	42
1973	38
1974	6
1975	5
1976	9
1977	4
1978	7
1979	15
1980	12
1982	9
1983	28
1987	11
1988	7
1989	2
1990	5
1991	26
1992	9
1993	31
1994	12
1995	54
1996	45
1997	7
1998	21
1999	9
2000	67
2001	2
2002	1
2003	3
2004	5
2005	52
2006	85
2007	103
2008	55
2009	14
2010	45
2011	6
2012	1

All-Time Record Progression

5 new records

5 all-time records were set at Tilzapotla between 9 June 1975 and 4 January 2008. Each dot is a new record.

When Tilzapotla set new all-time records
Date	Kind	Detail
1975-06-09	Record daily precipitation	Record daily precipitation 115.8 mm (4.6 in)
1980-01-25	Record low maximum temperature	Record low maximum temperature 17.8 C (64.0 F)
2006-11-20	Record low maximum temperature	Record low maximum temperature 16.7 C (62.1 F)
2006-11-25	Record low maximum temperature	Record low maximum temperature 15.0 C (59.0 F)
2008-01-04	Record low maximum temperature	Record low maximum temperature 13.9 C (57.0 F)

Wettest Day of Each Month

Jun: 115.8 mm (4.6 in)

The wettest day on record for each calendar month at Tilzapotla. The most was 115.8 mm (4.6 in) on 9 June 1975.

Record daily precipitation for each month at Tilzapotla
Month	Record daily precipitation (mm)	Date
Jan	35.8 mm (1.4 in)	25 January 1992
Feb	49.5 mm (1.9 in)	3 February 2010
Mar	24.9 mm (1.0 in)	16 March 1978
Apr	35.8 mm (1.4 in)	15 April 1968
May	84.8 mm (3.3 in)	30 May 1979
Jun	115.8 mm (4.6 in)	9 June 1975
Jul	89.9 mm (3.5 in)	1 July 2009
Aug	81.8 mm (3.2 in)	2 August 1952
Sep	98.8 mm (3.9 in)	4 September 1997
Oct	71.4 mm (2.8 in)	1 October 1998
Nov	51.8 mm (2.0 in)	10 November 1995
Dec	17.8 mm (0.7 in)	30 December 1995

Period of Record Coverage

1942 to 2012

68 years of record at Tilzapotla, 1942 to 2012. 15 years have data for under 90 percent of days and are left out of rankings: 1942, 1948, 1949, 1951, 1961, 1971, 1984, 2000 and others.

Days with data per year at Tilzapotla
Year	Days with data	Share of year	Complete
1942	91	25%	No
1943	363	99%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	332	91%	Yes
1948	304	83%	No
1949	302	83%	No
1950	365	100%	Yes
1951	304	83%	No
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	364	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	335	92%	Yes
1961	31	8%	No
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	363	99%	Yes
1968	366	100%	Yes
1970	365	100%	Yes
1971	304	83%	No
1972	335	92%	Yes
1973	365	100%	Yes
1974	334	92%	Yes
1975	365	100%	Yes
1976	335	92%	Yes
1977	364	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	364	99%	Yes
1981	332	91%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	182	50%	No
1987	364	100%	Yes
1988	364	99%	Yes
1989	365	100%	Yes
1990	364	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	163	45%	No
2001	306	84%	No
2002	365	100%	Yes
2003	304	83%	No
2004	360	98%	Yes
2005	321	88%	No
2006	342	94%	Yes
2007	253	69%	No
2008	275	75%	No
2009	305	84%	No
2010	225	62%	No
2011	365	100%	Yes
2012	335	92%	Yes

Latest Records

Latest records at Tilzapotla
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 October 2012	Tilzapotla, MX	daily rain	41.7 mm (1.6 in)	26.7 mm (1.1 in)	49 years	42 of 100 (Notable)
6 October 2012	Tilzapotla, MX	daily low min (Tie)	13.9 C (57.0 F)	tie	56 years	5 of 100 (Routine)
5 October 2012	Tilzapotla, MX	daily low min	11.7 C (53.1 F)	2.2 C (4.0 F)	17 years	21 of 100 (Routine)
15 September 2012	Tilzapotla, MX	daily low min (Tie)	15.6 C (60.1 F)	tie	56 years	5 of 100 (Routine)
14 September 2012	Tilzapotla, MX	daily low min (Tie)	15.0 C (59.0 F)	tie	14 years	2 of 100 (Routine)
18 August 2012	Tilzapotla, MX	daily rain	26.2 mm (1.0 in)	3.1 mm (0.12 in)	19 years	14 of 100 (Routine)
16 July 2012	Tilzapotla, MX	daily rain	44.7 mm (1.8 in)	16.8 mm (0.7 in)	44 years	32 of 100 (Routine)
9 July 2012	Tilzapotla, MX	daily rain	38.6 mm (1.5 in)	8.6 mm (0.34 in)	44 years	26 of 100 (Routine)
18 June 2012	Tilzapotla, MX	daily rain	39.1 mm (1.5 in)	0.2 mm (0.01 in)	3 years	7 of 100 (Routine)
9 May 2012	Tilzapotla, MX	daily rain	27.9 mm (1.1 in)	7.6 mm (0.30 in)	53 years	28 of 100 (Routine)
9 February 2012	Tilzapotla, MX	daily rain	7.1 mm (0.28 in)	7.1 mm (0.28 in)	68 years	20 of 100 (Routine)
5 February 2012	Tilzapotla, MX	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	68 years	20 of 100 (Routine)
29 January 2012	Tilzapotla, MX	daily rain	1.0 mm (0.04 in)	1.0 mm (0.04 in)	68 years	20 of 100 (Routine)
18 December 2011	Tilzapotla, MX	daily low min (Tie)	10.0 C (50.0 F)	tie	52 years	5 of 100 (Routine)
4 December 2011	Tilzapotla, MX	daily low min (Tie)	10.0 C (50.0 F)	tie	20 years	3 of 100 (Routine)
3 December 2011	Tilzapotla, MX	daily low min	8.9 C (48.0 F)	1.1 C (2.0 F)	20 years	16 of 100 (Routine)
2 December 2011	Tilzapotla, MX	daily low min (Tie)	10.0 C (50.0 F)	tie	20 years	3 of 100 (Routine)
1 December 2011	Tilzapotla, MX	daily low min	7.8 C (46.0 F)	2.2 C (4.0 F)	20 years	20 of 100 (Routine)
30 November 2011	Tilzapotla, MX	daily low min (Tie)	8.9 C (48.0 F)	tie	60 years	6 of 100 (Routine)
31 October 2011	Tilzapotla, MX	daily low min	10.6 C (51.1 F)	1.1 C (2.0 F)	58 years	28 of 100 (Routine)

Climate Trend

43 complete years, 1943 to 2011

One stripe for each of 43 complete years at Tilzapotla, 1943 to 2011. Blue stripes are years cooler than the station's own mean of 26.1 C (78.9 F); red stripes are warmer. The coolest year was 2011, at 23.5 C (74.2 F), and the warmest was 1962, at 28.5 C (83.2 F). The strongest colour marks a difference of 2.7 C (4.9 F).

Annual mean temperature at Tilzapotla as warming stripes, 1943 to 2011
Year	Annual mean temperature	Difference from the station mean
1943	25.3 C	-0.83 C
1944	25.7 C	-0.39 C
1945	26.3 C	+0.17 C
1946	25.7 C	-0.38 C
1950	25.8 C	-0.32 C
1952	25.5 C	-0.60 C
1953	26.0 C	-0.08 C
1954	25.3 C	-0.81 C
1955	24.7 C	-1.38 C
1956	24.6 C	-1.45 C
1957	25.7 C	-0.36 C
1958	25.5 C	-0.63 C
1959	25.5 C	-0.58 C
1962	28.5 C	+2.38 C
1963	27.9 C	+1.84 C
1964	27.9 C	+1.84 C
1965	27.4 C	+1.31 C
1966	27.3 C	+1.19 C
1967	27.2 C	+1.12 C
1968	27.2 C	+1.07 C
1970	27.3 C	+1.24 C
1973	27.5 C	+1.46 C
1975	26.4 C	+0.33 C
1977	26.9 C	+0.85 C
1978	26.9 C	+0.84 C
1979	26.7 C	+0.65 C
1980	26.6 C	+0.47 C
1982	27.0 C	+0.96 C
1983	27.2 C	+1.09 C
1987	26.8 C	+0.70 C
1988	27.0 C	+0.90 C
1989	26.5 C	+0.43 C
1990	26.8 C	+0.71 C
1991	26.6 C	+0.52 C
1993	25.0 C	-1.05 C
1994	24.9 C	-1.20 C
1995	24.6 C	-1.47 C
1996	23.6 C	-2.49 C
1997	24.4 C	-1.71 C
1998	23.9 C	-2.20 C
1999	24.6 C	-1.52 C
2002	26.2 C	+0.07 C
2011	23.5 C	-2.62 C

The fitted trend in annual mean temperature here over 1943 to 2011 is -0.16 C (-0.36 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.3 F (-0.6 to 0.1) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tilzapotla
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.16 C (-0.36 to 0.05) per decade	-0.3 F (-0.6 to 0.1) per decade	1943 to 2011	43	Not clearly different from zero
Mean daily maximum	-0.1 C (-0.3 to 0.1) per decade	-0.2 F (-0.6 to 0.2) per decade	1943 to 2011	43	Not clearly different from zero
Mean daily minimum	-0.20 C (-0.42 to 0.03) per decade	-0.4 F (-0.8 to 0.1) per decade	1943 to 2011	43	Not clearly different from zero

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

1942 to 2012

Yearly extremes at Tilzapotla: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	1962	41.7 C (107.1 F)	68
Coldest night (TNn)	2.8 C (37.0 F)	1955	9.5 C (49.0 F)	68
Wettest day (Rx1day)	115.8 mm (4.6 in)	1975	57.9 mm (2.3 in)	68
Wettest five days (Rx5day)	206.6 mm (8.1 in)	2008	112.6 mm (4.4 in)	68
Longest dry spell (CDD)	160 days	1988	92 days	68

Hottest day (TXx)

The hottest day of the year at Tilzapotla, 1942 to 2012. The record is 45.6 C (114.1 F) in 1962, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Tilzapotla by year
Year	Hottest day (TXx)
1942	31.7 C (89.1 F)
1943	40.0 C (104.0 F)
1944	40.6 C (105.1 F)
1945	42.8 C (109.0 F)
1946	40.6 C (105.1 F)
1947	38.9 C (102.0 F)
1948	43.9 C (111.0 F)
1949	38.9 C (102.0 F)
1950	41.7 C (107.1 F)
1951	40.6 C (105.1 F)
1952	41.7 C (107.1 F)
1953	41.7 C (107.1 F)
1954	41.1 C (106.0 F)
1955	42.2 C (108.0 F)
1956	40.0 C (104.0 F)
1957	41.7 C (107.1 F)
1958	41.7 C (107.1 F)
1959	41.7 C (107.1 F)
1960	41.7 C (107.1 F)
1961	36.7 C (98.1 F)
1962	45.6 C (114.1 F)
1963	43.3 C (109.9 F)
1964	43.9 C (111.0 F)
1965	43.3 C (109.9 F)
1966	41.7 C (107.1 F)
1967	41.7 C (107.1 F)
1968	42.8 C (109.0 F)
1970	42.8 C (109.0 F)
1971	41.7 C (107.1 F)
1972	44.4 C (111.9 F)
1973	44.4 C (111.9 F)
1974	42.8 C (109.0 F)
1975	42.8 C (109.0 F)
1976	41.7 C (107.1 F)
1977	42.8 C (109.0 F)
1978	41.7 C (107.1 F)
1979	41.7 C (107.1 F)
1980	41.7 C (107.1 F)
1981	40.6 C (105.1 F)
1982	42.8 C (109.0 F)
1983	43.9 C (111.0 F)
1984	42.8 C (109.0 F)
1987	40.6 C (105.1 F)
1988	42.8 C (109.0 F)
1989	41.7 C (107.1 F)
1990	42.8 C (109.0 F)
1991	43.9 C (111.0 F)
1992	40.0 C (104.0 F)
1993	40.0 C (104.0 F)
1994	40.6 C (105.1 F)
1995	40.6 C (105.1 F)
1996	40.0 C (104.0 F)
1997	38.9 C (102.0 F)
1998	40.0 C (104.0 F)
1999	40.0 C (104.0 F)
2000	36.7 C (98.1 F)
2001	40.0 C (104.0 F)
2002	40.0 C (104.0 F)
2003	41.7 C (107.1 F)
2004	35.6 C (96.1 F)
2005	30.6 C (87.1 F)
2006	30.6 C (87.1 F)
2007	30.0 C (86.0 F)
2008	28.9 C (84.0 F)
2009	30.6 C (87.1 F)
2010	28.9 C (84.0 F)
2011	40.0 C (104.0 F)
2012	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Tilzapotla, 1942 to 2012. The record is 2.8 C (37.0 F) in 1955, marked on the chart; the median year is 9.5 C (49.0 F).

Coldest night (TNn) at Tilzapotla by year
Year	Coldest night (TNn)
1942	15.0 C (59.0 F)
1943	7.8 C (46.0 F)
1944	8.9 C (48.0 F)
1945	11.7 C (53.1 F)
1946	8.9 C (48.0 F)
1947	10.6 C (51.1 F)
1948	10.6 C (51.1 F)
1949	8.9 C (48.0 F)
1950	7.8 C (46.0 F)
1951	11.7 C (53.1 F)
1952	10.6 C (51.1 F)
1953	7.8 C (46.0 F)
1954	10.6 C (51.1 F)
1955	2.8 C (37.0 F)
1956	5.6 C (42.1 F)
1957	8.9 C (48.0 F)
1958	8.9 C (48.0 F)
1959	10.0 C (50.0 F)
1960	10.0 C (50.0 F)
1961	11.7 C (53.1 F)
1962	12.8 C (55.0 F)
1963	11.7 C (53.1 F)
1964	12.8 C (55.0 F)
1965	10.6 C (51.1 F)
1966	10.6 C (51.1 F)
1967	10.6 C (51.1 F)
1968	11.7 C (53.1 F)
1970	11.7 C (53.1 F)
1971	12.2 C (54.0 F)
1972	11.7 C (53.1 F)
1973	10.6 C (51.1 F)
1974	11.7 C (53.1 F)
1975	10.0 C (50.0 F)
1976	10.0 C (50.0 F)
1977	10.0 C (50.0 F)
1978	10.6 C (51.1 F)
1979	8.9 C (48.0 F)
1980	10.0 C (50.0 F)
1981	10.0 C (50.0 F)
1982	7.8 C (46.0 F)
1983	8.9 C (48.0 F)
1984	10.0 C (50.0 F)
1987	8.9 C (48.0 F)
1988	10.6 C (51.1 F)
1989	10.0 C (50.0 F)
1990	12.8 C (55.0 F)
1991	8.9 C (48.0 F)
1992	7.8 C (46.0 F)
1993	10.6 C (51.1 F)
1994	5.0 C (41.0 F)
1995	7.8 C (46.0 F)
1996	8.9 C (48.0 F)
1997	6.7 C (44.1 F)
1998	8.9 C (48.0 F)
1999	8.9 C (48.0 F)
2000	2.8 C (37.0 F)
2001	10.0 C (50.0 F)
2002	7.8 C (46.0 F)
2003	7.8 C (46.0 F)
2004	8.9 C (48.0 F)
2005	8.9 C (48.0 F)
2006	5.6 C (42.1 F)
2007	8.9 C (48.0 F)
2008	6.7 C (44.1 F)
2009	8.9 C (48.0 F)
2010	7.8 C (46.0 F)
2011	7.8 C (46.0 F)
2012	8.9 C (48.0 F)

Wettest day (Rx1day)

The wettest day of the year at Tilzapotla, 1942 to 2012. The record is 115.8 mm (4.6 in) in 1975, marked on the chart; the median year is 57.9 mm (2.3 in).

Wettest day (Rx1day) at Tilzapotla by year
Year	Wettest day (Rx1day)
1942	6.9 mm (0.27 in)
1943	63.8 mm (2.5 in)
1944	61.0 mm (2.4 in)
1945	41.9 mm (1.6 in)
1946	61.5 mm (2.4 in)
1947	61.0 mm (2.4 in)
1948	48.8 mm (1.9 in)
1949	65.8 mm (2.6 in)
1950	64.8 mm (2.6 in)
1951	57.9 mm (2.3 in)
1952	81.8 mm (3.2 in)
1953	73.9 mm (2.9 in)
1954	68.8 mm (2.7 in)
1955	63.8 mm (2.5 in)
1956	54.9 mm (2.2 in)
1957	79.0 mm (3.1 in)
1958	53.3 mm (2.1 in)
1959	111.3 mm (4.4 in)
1960	63.8 mm (2.5 in)
1961	4.8 mm (0.19 in)
1962	49.8 mm (2.0 in)
1963	49.8 mm (2.0 in)
1964	39.9 mm (1.6 in)
1965	96.8 mm (3.8 in)
1966	53.8 mm (2.1 in)
1967	64.8 mm (2.6 in)
1968	49.8 mm (2.0 in)
1970	83.3 mm (3.3 in)
1971	45.0 mm (1.8 in)
1972	59.9 mm (2.4 in)
1973	66.8 mm (2.6 in)
1974	64.8 mm (2.6 in)
1975	115.8 mm (4.6 in)
1976	66.8 mm (2.6 in)
1977	49.8 mm (2.0 in)
1978	50.8 mm (2.0 in)
1979	84.8 mm (3.3 in)
1980	62.0 mm (2.4 in)
1981	64.3 mm (2.5 in)
1982	42.9 mm (1.7 in)
1983	57.9 mm (2.3 in)
1984	41.9 mm (1.6 in)
1987	55.9 mm (2.2 in)
1988	57.9 mm (2.3 in)
1989	50.8 mm (2.0 in)
1990	63.8 mm (2.5 in)
1991	57.9 mm (2.3 in)
1992	45.0 mm (1.8 in)
1993	44.5 mm (1.8 in)
1994	50.3 mm (2.0 in)
1995	57.9 mm (2.3 in)
1996	75.4 mm (3.0 in)
1997	98.8 mm (3.9 in)
1998	71.4 mm (2.8 in)
1999	47.2 mm (1.9 in)
2000	38.9 mm (1.5 in)
2001	63.5 mm (2.5 in)
2002	49.8 mm (2.0 in)
2003	69.9 mm (2.8 in)
2004	33.8 mm (1.3 in)
2005	47.2 mm (1.9 in)
2006	54.9 mm (2.2 in)
2007	72.9 mm (2.9 in)
2008	89.2 mm (3.5 in)
2009	89.9 mm (3.5 in)
2010	49.5 mm (1.9 in)
2011	44.5 mm (1.8 in)
2012	44.7 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tilzapotla, 1942 to 2012. The record is 206.6 mm (8.1 in) in 2008, marked on the chart; the median year is 112.6 mm (4.4 in).

Wettest five days (Rx5day) at Tilzapotla by year
Year	Wettest five days (Rx5day)
1942	10.7 mm (0.4 in)
1943	88.3 mm (3.5 in)
1944	127.6 mm (5.0 in)
1945	72.2 mm (2.8 in)
1946	132.1 mm (5.2 in)
1947	88.7 mm (3.5 in)
1948	95.3 mm (3.8 in)
1949	91.1 mm (3.6 in)
1950	123.4 mm (4.9 in)
1951	82.6 mm (3.3 in)
1952	95.3 mm (3.8 in)
1953	89.7 mm (3.5 in)
1954	199.7 mm (7.9 in)
1955	166.1 mm (6.5 in)
1956	90.4 mm (3.6 in)
1957	144.3 mm (5.7 in)
1958	98.6 mm (3.9 in)
1959	161.4 mm (6.4 in)
1960	90.5 mm (3.6 in)
1961	4.8 mm (0.19 in)
1962	114.0 mm (4.5 in)
1963	171.2 mm (6.7 in)
1964	121.4 mm (4.8 in)
1965	113.1 mm (4.5 in)
1966	109.5 mm (4.3 in)
1967	146.3 mm (5.8 in)
1968	81.5 mm (3.2 in)
1970	96.3 mm (3.8 in)
1971	113.1 mm (4.5 in)
1972	151.9 mm (6.0 in)
1973	96.3 mm (3.8 in)
1974	181.3 mm (7.1 in)
1975	153.2 mm (6.0 in)
1976	112.1 mm (4.4 in)
1977	149.1 mm (5.9 in)
1978	88.6 mm (3.5 in)
1979	126.5 mm (5.0 in)
1980	121.5 mm (4.8 in)
1981	161.3 mm (6.4 in)
1982	93.5 mm (3.7 in)
1983	109.8 mm (4.3 in)
1984	125.2 mm (4.9 in)
1987	131.5 mm (5.2 in)
1988	113.0 mm (4.4 in)
1989	124.5 mm (4.9 in)
1990	132.4 mm (5.2 in)
1991	97.0 mm (3.8 in)
1992	102.6 mm (4.0 in)
1993	104.7 mm (4.1 in)
1994	83.1 mm (3.3 in)
1995	108.5 mm (4.3 in)
1996	182.5 mm (7.2 in)
1997	157.5 mm (6.2 in)
1998	131.4 mm (5.2 in)
1999	139.4 mm (5.5 in)
2000	103.6 mm (4.1 in)
2001	141.0 mm (5.6 in)
2002	81.1 mm (3.2 in)
2003	95.2 mm (3.7 in)
2004	82.1 mm (3.2 in)
2005	109.0 mm (4.3 in)
2006	114.8 mm (4.5 in)
2007	124.0 mm (4.9 in)
2008	206.6 mm (8.1 in)
2009	141.7 mm (5.6 in)
2010	101.0 mm (4.0 in)
2011	88.2 mm (3.5 in)
2012	83.4 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tilzapotla, 1942 to 2012. The record is 160 days in 1988, marked on the chart; the median year is 92 days.

Longest dry spell (CDD) at Tilzapotla by year
Year	Longest dry spell (CDD)
1942	31 days
1943	123 days
1944	87 days
1945	80 days
1946	93 days
1947	90 days
1948	101 days
1949	90 days
1950	111 days
1951	46 days
1952	59 days
1953	141 days
1954	57 days
1955	131 days
1956	122 days
1957	99 days
1958	64 days
1959	99 days
1960	122 days
1961	19 days
1962	105 days
1963	78 days
1964	119 days
1965	56 days
1966	68 days
1967	129 days
1968	47 days
1970	74 days
1971	74 days
1972	82 days
1973	94 days
1974	71 days
1975	109 days
1976	99 days
1977	80 days
1978	74 days
1979	132 days
1980	65 days
1981	51 days
1982	60 days
1983	84 days
1984	68 days
1987	106 days
1988	160 days
1989	120 days
1990	102 days
1991	145 days
1992	93 days
1993	98 days
1994	107 days
1995	57 days
1996	78 days
1997	96 days
1998	154 days
1999	111 days
2000	70 days
2001	64 days
2002	113 days
2003	88 days
2004	59 days
2005	112 days
2006	106 days
2007	44 days
2008	133 days
2009	117 days
2010	49 days
2011	100 days
2012	88 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

60 years, 1943 to 2012

A day with at least 59.3 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 120.6 mm (4.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Tilzapotla: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	59.3 mm (2.3 in)
5 years	74.6 mm (2.9 in)
10 years	85.1 mm (3.4 in)
25 years	99.0 mm (3.9 in)
50 years	109.6 mm (4.3 in)
100 years	120.6 mm (4.7 in)	Longer than the 60 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, 60 years of values from 1943 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: 115.8 mm (4.6 in) in 1975; 111.3 mm (4.4 in) in 1959; 98.8 mm (3.9 in) in 1997.

Download the Data

Data for Tilzapotla standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tilzapotla 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 2026-10-15 (15 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).