Moctezuma Weather Records (MXN00026054)

Record envelope, standing records and threshold days for Moctezuma (MXN00026054), Mexico, with 47 years of record.

Key Facts for Moctezuma

Moctezuma (MXN00026054) is a weather station in Mexico at 29.80 latitude and -109.68 longitude, 624 m (2,047 ft) above sea level.
The station reports from 1943 to 1989, 47 years of record.
1,464 records set at Moctezuma still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Moctezuma set a daily record precipitation of 47.0 mm (1.9 in) on 3 August 1989.

About the Station

Location: Mexico, 29.80 latitude, -109.68 longitude.
Elevation: 624 m (2,047 ft).
Period of record: 1943 to 1989, 47 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 Moctezuma. 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 Moctezuma, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	34.4 C (93.9 F)	-8.3 C (17.1 F)	n/a	n/a
Feb	41.7 C (107.1 F)	-7.2 C (19.0 F)	n/a	n/a
Mar	45.6 C (114.1 F)	-3.9 C (25.0 F)	n/a	n/a
Apr	45.0 C (113.0 F)	-0.6 C (30.9 F)	n/a	n/a
May	49.4 C (120.9 F)	0.6 C (33.1 F)	n/a	n/a
Jun	47.8 C (118.0 F)	6.7 C (44.1 F)	n/a	n/a
Jul	50.0 C (122.0 F)	17.8 C (64.0 F)	n/a	n/a
Aug	48.9 C (120.0 F)	12.8 C (55.0 F)	n/a	n/a
Sep	46.7 C (116.1 F)	9.4 C (48.9 F)	n/a	n/a
Oct	43.3 C (109.9 F)	1.7 C (35.1 F)	n/a	n/a
Nov	40.0 C (104.0 F)	-9.4 C (15.1 F)	n/a	n/a
Dec	37.8 C (100.0 F)	-10.0 C (14.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Moctezuma still stand. 1946 holds the most, with 136.

Standing records at Moctezuma by the year they were set
Year set	Standing records
1943	41
1944	77
1945	75
1946	136
1947	88
1948	70
1949	78
1950	66
1951	56
1952	38
1953	63
1954	22
1955	22
1956	21
1957	20
1958	14
1959	11
1960	11
1961	5
1962	20
1963	21
1964	34
1965	28
1966	18
1967	27
1968	23
1969	33
1970	21
1971	32
1972	29
1973	35
1974	23
1975	36
1976	44
1977	58
1978	7
1988	15
1989	46

All-Time Record Progression

1 new records

1 all-time records were set at Moctezuma between 10 July 1976 and 10 July 1976. Each dot is a new record.

Wettest Day of Each Month

Jul: 81.8 mm (3.2 in)

The wettest day on record for each calendar month at Moctezuma. The most was 81.8 mm (3.2 in) on 10 July 1976.

Record daily precipitation for each month at Moctezuma
Month	Record daily precipitation (mm)	Date
Jan	49.8 mm (2.0 in)	10 January 1960
Feb	55.9 mm (2.2 in)	21 February 1973
Mar	34.3 mm (1.4 in)	19 March 1957
Apr	22.4 mm (0.9 in)	13 April 1988
May	40.9 mm (1.6 in)	31 May 1952
Jun	55.9 mm (2.2 in)	1 June 1952
Jul	81.8 mm (3.2 in)	10 July 1976
Aug	79.8 mm (3.1 in)	8 August 1969
Sep	66.8 mm (2.6 in)	20 September 1988
Oct	63.5 mm (2.5 in)	29 October 1951
Nov	72.9 mm (2.9 in)	8 November 1974
Dec	62.5 mm (2.5 in)	14 December 1967

Period of Record Coverage

1943 to 1989

38 years of record at Moctezuma, 1943 to 1989. 5 years have data for under 90 percent of days and are left out of rankings: 1943, 1944, 1977, 1978, 1989.

Days with data per year at Moctezuma
Year	Days with data	Share of year	Complete
1943	214	59%	No
1944	305	83%	No
1945	365	100%	Yes
1946	359	98%	Yes
1947	364	100%	Yes
1948	365	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	333	91%	Yes
1968	334	91%	Yes
1969	354	97%	Yes
1970	365	100%	Yes
1971	363	99%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	330	90%	Yes
1977	270	74%	No
1978	212	58%	No
1988	353	96%	Yes
1989	218	60%	No

Latest Records

Latest records at Moctezuma
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 August 1989	Moctezuma, MX	daily rain	47.0 mm (1.9 in)	4.8 mm (0.19 in)	38 years	18 of 100 (Routine)
15 July 1989	Moctezuma, MX	daily low min (Tie)	20.0 C (68.0 F)	tie	32 years	3 of 100 (Routine)
14 July 1989	Moctezuma, MX	daily rain	43.9 mm (1.7 in)	5.8 mm (0.23 in)	32 years	17 of 100 (Routine)
12 July 1989	Moctezuma, MX	daily high max	45.0 C (113.0 F)	0.6 C (1.1 F)	42 years	17 of 100 (Routine)
9 July 1989	Moctezuma, MX	monthly low min (Tie)	17.8 C (64.0 F)	tie	32 years	5 of 100 (Routine)
3 July 1989	Moctezuma, MX	daily high max	45.0 C (113.0 F)	1.1 C (2.0 F)	24 years	13 of 100 (Routine)
27 June 1989	Moctezuma, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	46 years	4 of 100 (Routine)
18 June 1989	Moctezuma, MX	daily high max	45.6 C (114.1 F)	0.6 C (1.1 F)	35 years	15 of 100 (Routine)
23 May 1989	Moctezuma, MX	daily high max	42.8 C (109.0 F)	1.7 C (3.1 F)	40 years	20 of 100 (Routine)
17 May 1989	Moctezuma, MX	daily low max	26.7 C (80.1 F)	1.6 C (2.9 F)	36 years	18 of 100 (Routine)
16 May 1989	Moctezuma, MX	daily low max	21.7 C (71.1 F)	3.3 C (5.9 F)	36 years	22 of 100 (Routine)
16 May 1989	Moctezuma, MX	daily rain	4.8 mm (0.19 in)	4.8 mm (0.19 in)	46 years	20 of 100 (Routine)
23 April 1989	Moctezuma, MX	daily high min	17.8 C (64.0 F)	0.6 C (1.1 F)	43 years	17 of 100 (Routine)
21 April 1989	Moctezuma, MX	daily high min	17.8 C (64.0 F)	1.7 C (3.1 F)	43 years	21 of 100 (Routine)
21 April 1989	Moctezuma, MX	daily high max (Tie)	40.6 C (105.1 F)	tie	24 years	2 of 100 (Routine)
20 April 1989	Moctezuma, MX	daily high max (Tie)	40.0 C (104.0 F)	tie	44 years	4 of 100 (Routine)
19 April 1989	Moctezuma, MX	daily high max	40.6 C (105.1 F)	0.6 C (1.1 F)	42 years	17 of 100 (Routine)
5 April 1989	Moctezuma, MX	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	35 years	16 of 100 (Routine)
4 April 1989	Moctezuma, MX	daily high max	37.8 C (100.0 F)	2.2 C (4.0 F)	30 years	17 of 100 (Routine)
3 April 1989	Moctezuma, MX	daily high max	41.7 C (107.1 F)	4.5 C (8.1 F)	43 years	26 of 100 (Routine)

Climate Trend

30 complete years, 1945 to 1988

One stripe for each of 30 complete years at Moctezuma, 1945 to 1988. Blue stripes are years cooler than the station's own mean of 20.8 C (69.4 F); red stripes are warmer. The coolest year was 1975, at 18.9 C (66.0 F), and the warmest was 1946, at 23.6 C (74.4 F). The strongest colour marks a difference of 2.8 C (5.0 F).

Annual mean temperature at Moctezuma as warming stripes, 1945 to 1988
Year	Annual mean temperature	Difference from the station mean
1945	23.6 C	+2.76 C
1946	23.6 C	+2.76 C
1947	23.2 C	+2.43 C
1948	22.0 C	+1.17 C
1949	19.7 C	-1.06 C
1950	21.4 C	+0.56 C
1951	20.9 C	+0.05 C
1952	20.5 C	-0.27 C
1953	20.3 C	-0.47 C
1954	21.3 C	+0.45 C
1955	20.0 C	-0.82 C
1956	20.4 C	-0.38 C
1957	20.3 C	-0.52 C
1958	20.1 C	-0.68 C
1959	20.5 C	-0.26 C
1960	20.0 C	-0.77 C
1961	20.1 C	-0.72 C
1962	20.9 C	+0.12 C
1963	21.7 C	+0.94 C
1964	20.4 C	-0.44 C
1965	20.8 C	-0.03 C
1966	20.8 C	+0.02 C
1969	20.8 C	+0.03 C
1970	20.6 C	-0.19 C
1971	20.4 C	-0.38 C
1972	20.5 C	-0.27 C
1973	19.5 C	-1.26 C
1974	19.8 C	-1.04 C
1975	18.9 C	-1.93 C
1988	21.1 C	+0.34 C

The annual mean temperature here has fallen by 0.5 C (0.2 to 0.9) per decade over 1945 to 1988. In Fahrenheit: 1.0 F (0.3 to 1.6) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Moctezuma
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.5 C (-0.9 to -0.2) per decade	-1.0 F (-1.6 to -0.3) per decade	1945 to 1988	30	Fall
Mean daily maximum	-1.0 C (-1.4 to -0.6) per decade	-1.8 F (-2.5 to -1.1) per decade	1945 to 1988	30	Fall
Mean daily minimum	-0.1 C (-0.5 to 0.3) per decade	-0.1 F (-0.8 to 0.6) per decade	1945 to 1988	30	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

1943 to 1989

Yearly extremes at Moctezuma: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	50.0 C (122.0 F)	1947	45.0 C (113.0 F)	38
Coldest night (TNn)	-10.0 C (14.0 F)	1953	-4.7 C (23.5 F)	38
Wettest day (Rx1day)	81.8 mm (3.2 in)	1976	53.8 mm (2.1 in)	38
Wettest five days (Rx5day)	131.4 mm (5.2 in)	1948	88.0 mm (3.5 in)	38
Longest dry spell (CDD)	158 days	1960	88 days	38

Hottest day (TXx)

The hottest day of the year at Moctezuma, 1943 to 1989. The record is 50.0 C (122.0 F) in 1947, marked on the chart; the median year is 45.0 C (113.0 F).

Hottest day (TXx) at Moctezuma by year
Year	Hottest day (TXx)
1943	45.0 C (113.0 F)
1944	48.9 C (120.0 F)
1945	46.7 C (116.1 F)
1946	47.8 C (118.0 F)
1947	50.0 C (122.0 F)
1948	46.7 C (116.1 F)
1949	45.0 C (113.0 F)
1950	45.0 C (113.0 F)
1951	45.6 C (114.1 F)
1952	45.0 C (113.0 F)
1953	46.1 C (115.0 F)
1954	46.7 C (116.1 F)
1955	46.7 C (116.1 F)
1956	46.1 C (115.0 F)
1957	43.9 C (111.0 F)
1958	44.4 C (111.9 F)
1959	41.7 C (107.1 F)
1960	46.7 C (116.1 F)
1961	40.6 C (105.1 F)
1962	45.6 C (114.1 F)
1963	45.6 C (114.1 F)
1964	43.9 C (111.0 F)
1965	43.3 C (109.9 F)
1966	43.9 C (111.0 F)
1967	43.3 C (109.9 F)
1968	45.0 C (113.0 F)
1969	44.4 C (111.9 F)
1970	45.0 C (113.0 F)
1971	41.7 C (107.1 F)
1972	43.3 C (109.9 F)
1973	43.9 C (111.0 F)
1974	43.3 C (109.9 F)
1975	42.2 C (108.0 F)
1976	42.2 C (108.0 F)
1977	42.8 C (109.0 F)
1978	43.9 C (111.0 F)
1988	45.6 C (114.1 F)
1989	45.6 C (114.1 F)

Coldest night (TNn)

The coldest night of the year at Moctezuma, 1943 to 1989. The record is -10.0 C (14.0 F) in 1953, marked on the chart; the median year is -4.7 C (23.5 F).

Coldest night (TNn) at Moctezuma by year
Year	Coldest night (TNn)
1943	0.0 C (32.0 F)
1944	-2.2 C (28.0 F)
1945	-2.2 C (28.0 F)
1946	-9.4 C (15.1 F)
1947	-5.0 C (23.0 F)
1948	-8.3 C (17.1 F)
1949	-6.7 C (19.9 F)
1950	-6.7 C (19.9 F)
1951	-7.8 C (18.0 F)
1952	-5.6 C (21.9 F)
1953	-10.0 C (14.0 F)
1954	-5.6 C (21.9 F)
1955	-5.0 C (23.0 F)
1956	-3.3 C (26.1 F)
1957	-1.1 C (30.0 F)
1958	-1.7 C (28.9 F)
1959	-2.2 C (28.0 F)
1960	-4.4 C (24.1 F)
1961	-1.1 C (30.0 F)
1962	-8.3 C (17.1 F)
1963	-5.0 C (23.0 F)
1964	-6.1 C (21.0 F)
1965	-5.0 C (23.0 F)
1966	-7.2 C (19.0 F)
1967	-5.0 C (23.0 F)
1968	-5.0 C (23.0 F)
1969	-5.0 C (23.0 F)
1970	-3.9 C (25.0 F)
1971	-3.3 C (26.1 F)
1972	-3.3 C (26.1 F)
1973	-4.4 C (24.1 F)
1974	-2.2 C (28.0 F)
1975	-4.4 C (24.1 F)
1976	-2.2 C (28.0 F)
1977	0.0 C (32.0 F)
1978	-3.3 C (26.1 F)
1988	-5.0 C (23.0 F)
1989	-3.3 C (26.1 F)

Wettest day (Rx1day)

The wettest day of the year at Moctezuma, 1943 to 1989. The record is 81.8 mm (3.2 in) in 1976, marked on the chart; the median year is 53.8 mm (2.1 in).

Wettest day (Rx1day) at Moctezuma by year
Year	Wettest day (Rx1day)
1943	41.4 mm (1.6 in)
1944	50.3 mm (2.0 in)
1945	51.3 mm (2.0 in)
1946	26.7 mm (1.1 in)
1947	24.6 mm (1.0 in)
1948	40.9 mm (1.6 in)
1949	46.5 mm (1.8 in)
1950	59.9 mm (2.4 in)
1951	63.5 mm (2.5 in)
1952	55.9 mm (2.2 in)
1953	56.9 mm (2.2 in)
1954	49.8 mm (2.0 in)
1955	53.8 mm (2.1 in)
1956	64.3 mm (2.5 in)
1957	41.9 mm (1.6 in)
1958	60.5 mm (2.4 in)
1959	42.9 mm (1.7 in)
1960	75.9 mm (3.0 in)
1961	27.9 mm (1.1 in)
1962	41.9 mm (1.6 in)
1963	53.8 mm (2.1 in)
1964	64.3 mm (2.5 in)
1965	57.4 mm (2.3 in)
1966	55.9 mm (2.2 in)
1967	66.5 mm (2.6 in)
1968	30.5 mm (1.2 in)
1969	79.8 mm (3.1 in)
1970	27.4 mm (1.1 in)
1971	61.0 mm (2.4 in)
1972	47.0 mm (1.9 in)
1973	55.9 mm (2.2 in)
1974	72.9 mm (2.9 in)
1975	75.9 mm (3.0 in)
1976	81.8 mm (3.2 in)
1977	27.9 mm (1.1 in)
1978	49.8 mm (2.0 in)
1988	66.8 mm (2.6 in)
1989	47.0 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Moctezuma, 1943 to 1989. The record is 131.4 mm (5.2 in) in 1948, marked on the chart; the median year is 88.0 mm (3.5 in).

Wettest five days (Rx5day) at Moctezuma by year
Year	Wettest five days (Rx5day)
1943	76.4 mm (3.0 in)
1944	83.4 mm (3.3 in)
1945	81.6 mm (3.2 in)
1946	31.5 mm (1.2 in)
1947	25.4 mm (1.0 in)
1948	131.4 mm (5.2 in)
1949	85.4 mm (3.4 in)
1950	124.4 mm (4.9 in)
1951	86.9 mm (3.4 in)
1952	96.8 mm (3.8 in)
1953	106.2 mm (4.2 in)
1954	69.9 mm (2.8 in)
1955	112.5 mm (4.4 in)
1956	94.0 mm (3.7 in)
1957	71.6 mm (2.8 in)
1958	93.0 mm (3.7 in)
1959	74.4 mm (2.9 in)
1960	101.1 mm (4.0 in)
1961	56.9 mm (2.2 in)
1962	107.7 mm (4.2 in)
1963	96.5 mm (3.8 in)
1964	97.5 mm (3.8 in)
1965	89.0 mm (3.5 in)
1966	121.4 mm (4.8 in)
1967	118.9 mm (4.7 in)
1968	47.3 mm (1.9 in)
1969	116.9 mm (4.6 in)
1970	58.4 mm (2.3 in)
1971	122.5 mm (4.8 in)
1972	96.2 mm (3.8 in)
1973	68.3 mm (2.7 in)
1974	72.9 mm (2.9 in)
1975	91.9 mm (3.6 in)
1976	86.6 mm (3.4 in)
1977	65.3 mm (2.6 in)
1978	49.8 mm (2.0 in)
1988	74.2 mm (2.9 in)
1989	104.2 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Moctezuma, 1943 to 1989. The record is 158 days in 1960, marked on the chart; the median year is 88 days.

Longest dry spell (CDD) at Moctezuma by year
Year	Longest dry spell (CDD)
1943	57 days
1944	92 days
1945	84 days
1946	101 days
1947	74 days
1948	134 days
1949	125 days
1950	114 days
1951	62 days
1952	56 days
1953	106 days
1954	97 days
1955	145 days
1956	155 days
1957	95 days
1958	84 days
1959	99 days
1960	158 days
1961	144 days
1962	108 days
1963	72 days
1964	84 days
1965	104 days
1966	71 days
1967	118 days
1968	60 days
1969	79 days
1970	111 days
1971	120 days
1972	71 days
1973	61 days
1974	68 days
1975	111 days
1976	63 days
1977	47 days
1978	56 days
1988	47 days
1989	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.

Frost Dates and Growing Season

28 years with a frost

Across 28 years with a frost, the median last spring frost at Moctezuma falls on 23 February and the median first autumn frost on 23 November, which leaves a median of 275 days between them.

Fitted over all years, the growing season changes by +8.6 days per decade at this station.

Frost dates and growing season at Moctezuma
Measure	Median, all years	Earliest period	Recent period (1945 to 1988)	Recent against earliest	Fitted trend
Last spring frost	23 February	n/a	23 February	n/a	-1.7 days per decade
First autumn frost	23 November	n/a	23 November	n/a	+6.8 days per decade
Growing days	275 days	n/a	275 days	n/a	+8.6 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

33 years, 1945 to 1988

A day with at least 55.0 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 84.5 mm (3.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Moctezuma: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	55.0 mm (2.2 in)
5 years	68.1 mm (2.7 in)
10 years	74.1 mm (2.9 in)
25 years	79.5 mm (3.1 in)
50 years	82.4 mm (3.2 in)	Longer than the 33 years of record
100 years	84.5 mm (3.3 in)	Longer than the 33 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, 33 years of values from 1945 to 1988.

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: 81.8 mm (3.2 in) in 1976; 79.8 mm (3.1 in) in 1969; 75.9 mm (3.0 in) in 1960.

Download the Data

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