Moctezuma (Smn) Weather Records (MXN00024109)

Record envelope, standing records and threshold days for Moctezuma (Smn) (MXN00024109), Mexico, with 45 years of record.

Key Facts for Moctezuma (Smn)

Moctezuma (Smn) (MXN00024109) is a weather station in Mexico at 22.75 latitude and -101.08 longitude, 1,730 m (5,675 ft) above sea level.
The station reports from 1942 to 1986, 45 years of record.
1,464 records set at Moctezuma (Smn) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Moctezuma (Smn) tied a daily record high minimum temperature of 13.9 C (57.0 F) on 12 November 1986.

About the Station

Location: Mexico, 22.75 latitude, -101.08 longitude.
Elevation: 1,730 m (5,675 ft).
Period of record: 1942 to 1986, 45 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 (Smn). 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 (Smn), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.6 C (96.1 F)	-12.2 C (10.0 F)	n/a	n/a
Feb	38.9 C (102.0 F)	-12.2 C (10.0 F)	n/a	n/a
Mar	40.0 C (104.0 F)	-5.0 C (23.0 F)	n/a	n/a
Apr	40.6 C (105.1 F)	-8.3 C (17.1 F)	n/a	n/a
May	43.9 C (111.0 F)	1.7 C (35.1 F)	n/a	n/a
Jun	43.9 C (111.0 F)	1.7 C (35.1 F)	n/a	n/a
Jul	41.7 C (107.1 F)	2.8 C (37.0 F)	n/a	n/a
Aug	41.7 C (107.1 F)	2.8 C (37.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	40.0 C (104.0 F)	-6.1 C (21.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	36.7 C (98.1 F)	-9.4 C (15.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Moctezuma (Smn) still stand. 1960 holds the most, with 118.

Standing records at Moctezuma (Smn) by the year they were set
Year set	Standing records
1944	53
1945	52
1946	48
1947	64
1948	98
1949	96
1950	89
1951	103
1952	25
1953	9
1954	14
1955	54
1956	29
1957	73
1958	34
1959	62
1960	118
1961	88
1962	45
1963	39
1964	14
1965	20
1966	2
1967	7
1969	13
1970	25
1972	2
1973	9
1974	2
1975	2
1976	11
1977	10
1978	23
1979	12
1980	20
1981	19
1982	36
1983	25
1984	11
1985	5
1986	3

All-Time Record Progression

2 new records

2 all-time records were set at Moctezuma (Smn) between 21 May 1982 and 15 August 1985. Each dot is a new record.

When Moctezuma (Smn) set new all-time records
Date	Kind	Detail
1982-05-21	Record daily precipitation	Record daily precipitation 90.9 mm (3.6 in)
1985-08-15	Record daily precipitation	Record daily precipitation 124.2 mm (4.9 in)

Wettest Day of Each Month

Aug: 124.2 mm (4.9 in)

The wettest day on record for each calendar month at Moctezuma (Smn). The most was 124.2 mm (4.9 in) on 15 August 1985.

Record daily precipitation for each month at Moctezuma (Smn)
Month	Record daily precipitation (mm)	Date
Jan	56.6 mm (2.2 in)	31 January 1984
Feb	32.8 mm (1.3 in)	20 February 1958
Mar	29.0 mm (1.1 in)	5 March 1968
Apr	49.8 mm (2.0 in)	25 April 1954
May	90.9 mm (3.6 in)	21 May 1982
Jun	63.8 mm (2.5 in)	25 June 1949
Jul	50.8 mm (2.0 in)	14 July 1983
Aug	124.2 mm (4.9 in)	15 August 1985
Sep	89.9 mm (3.5 in)	18 September 1968
Oct	43.9 mm (1.7 in)	2 October 1965
Nov	57.9 mm (2.3 in)	2 November 1958
Dec	49.5 mm (1.9 in)	4 December 1979

Period of Record Coverage

1944 to 1986

43 years of record at Moctezuma (Smn), 1944 to 1986. 12 years have data for under 90 percent of days and are left out of rankings: 1944, 1947, 1948, 1949, 1950, 1951, 1966, 1967 and others.

Days with data per year at Moctezuma (Smn)
Year	Days with data	Share of year	Complete
1944	211	58%	No
1945	358	98%	Yes
1946	348	95%	Yes
1947	318	87%	No
1948	313	86%	No
1949	309	85%	No
1950	287	79%	No
1951	294	81%	No
1952	362	99%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	364	99%	Yes
1957	365	100%	Yes
1958	362	99%	Yes
1959	362	99%	Yes
1960	356	97%	Yes
1961	352	96%	Yes
1962	364	100%	Yes
1963	341	93%	Yes
1964	362	99%	Yes
1965	340	93%	Yes
1966	218	60%	No
1967	128	35%	No
1968	136	37%	No
1969	250	68%	No
1970	363	99%	Yes
1971	250	68%	No
1972	269	73%	No
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	361	99%	Yes
1978	364	100%	Yes
1979	363	99%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	362	99%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	364	100%	Yes
1986	365	100%	Yes

Latest Records

Latest records at Moctezuma (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 November 1986	Moctezuma (Smn), MX	daily high min (Tie)	13.9 C (57.0 F)	tie	29 years	3 of 100 (Routine)
6 November 1986	Moctezuma (Smn), MX	daily rain	3.3 mm (0.13 in)	1.5 mm (0.06 in)	5 years	6 of 100 (Routine)
22 October 1986	Moctezuma (Smn), MX	daily low max	15.6 C (60.1 F)	3.3 C (5.9 F)	40 years	21 of 100 (Routine)
21 October 1986	Moctezuma (Smn), MX	daily low max	15.6 C (60.1 F)	3.3 C (5.9 F)	39 years	20 of 100 (Routine)
5 October 1986	Moctezuma (Smn), MX	daily rain	14.0 mm (0.6 in)	9.2 mm (0.36 in)	9 years	15 of 100 (Routine)
10 June 1986	Moctezuma (Smn), MX	daily rain	36.6 mm (1.4 in)	14.8 mm (0.6 in)	27 years	22 of 100 (Routine)
17 May 1986	Moctezuma (Smn), MX	daily high min	18.9 C (66.0 F)	1.1 C (2.0 F)	27 years	14 of 100 (Routine)
30 April 1986	Moctezuma (Smn), MX	daily rain	29.0 mm (1.1 in)	9.2 mm (0.36 in)	20 years	19 of 100 (Routine)
27 April 1986	Moctezuma (Smn), MX	daily rain	6.1 mm (0.24 in)	4.3 mm (0.17 in)	35 years	18 of 100 (Routine)
24 April 1986	Moctezuma (Smn), MX	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	43 years	19 of 100 (Routine)
23 March 1986	Moctezuma (Smn), MX	daily low max (Tie)	18.9 C (66.0 F)	tie	36 years	3 of 100 (Routine)
22 March 1986	Moctezuma (Smn), MX	daily low max (Tie)	17.8 C (64.0 F)	tie	40 years	4 of 100 (Routine)
22 February 1986	Moctezuma (Smn), MX	daily high max (Tie)	33.9 C (93.0 F)	tie	23 years	2 of 100 (Routine)
15 January 1986	Moctezuma (Smn), MX	daily low min (Tie)	-3.3 C (26.1 F)	tie	36 years	3 of 100 (Routine)
27 December 1985	Moctezuma (Smn), MX	daily low max	8.9 C (48.0 F)	1.7 C (3.1 F)	34 years	16 of 100 (Routine)
26 December 1985	Moctezuma (Smn), MX	daily low max (Tie)	11.7 C (53.1 F)	tie	36 years	3 of 100 (Routine)
24 December 1985	Moctezuma (Smn), MX	daily low max (Tie)	13.9 C (57.0 F)	tie	8 years	1 of 100 (Routine)
22 December 1985	Moctezuma (Smn), MX	daily rain	10.9 mm (0.4 in)	1.0 mm (0.04 in)	8 years	6 of 100 (Routine)
21 December 1985	Moctezuma (Smn), MX	daily rain	4.8 mm (0.19 in)	4.8 mm (0.19 in)	43 years	20 of 100 (Routine)
12 November 1985	Moctezuma (Smn), MX	daily high min (Tie)	13.9 C (57.0 F)	tie	28 years	3 of 100 (Routine)

Climate Trend

29 complete years, 1945 to 1986

One stripe for each of 29 complete years at Moctezuma (Smn), 1945 to 1986. Blue stripes are years cooler than the station's own mean of 19.4 C (67.0 F); red stripes are warmer. The coolest year was 1948, at 11.4 C (52.6 F), and the warmest was 1962, at 23.2 C (73.7 F). The strongest colour marks a difference of 8.1 C (14.6 F).

Annual mean temperature at Moctezuma (Smn) as warming stripes, 1945 to 1986
Year	Annual mean temperature	Difference from the station mean
1945	14.2 C	-5.24 C
1946	13.5 C	-5.97 C
1948	11.4 C	-8.02 C
1952	17.3 C	-2.17 C
1953	19.6 C	+0.19 C
1954	19.8 C	+0.39 C
1955	21.7 C	+2.22 C
1956	21.9 C	+2.43 C
1957	22.7 C	+3.28 C
1958	21.8 C	+2.39 C
1959	22.2 C	+2.76 C
1960	22.1 C	+2.64 C
1962	23.2 C	+3.75 C
1964	23.1 C	+3.67 C
1970	19.1 C	-0.37 C
1973	19.4 C	-0.08 C
1974	19.4 C	-0.07 C
1975	19.4 C	-0.09 C
1976	18.2 C	-1.23 C
1977	18.4 C	-1.05 C
1978	20.7 C	+1.29 C
1979	19.0 C	-0.45 C
1980	19.3 C	-0.12 C
1981	18.7 C	-0.71 C
1982	20.3 C	+0.90 C
1983	19.7 C	+0.28 C
1984	18.8 C	-0.62 C
1985	19.6 C	+0.16 C
1986	19.2 C	-0.20 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

1942 to 1986

Yearly extremes at Moctezuma (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1957	36.7 C (98.1 F)	43
Coldest night (TNn)	-12.2 C (10.0 F)	1951	0.0 C (32.0 F)	43
Wettest day (Rx1day)	124.2 mm (4.9 in)	1985	45.0 mm (1.8 in)	45
Wettest five days (Rx5day)	151.9 mm (6.0 in)	1965	68.9 mm (2.7 in)	45
Longest dry spell (CDD)	172 days	1969	60 days	45

Hottest day (TXx)

The hottest day of the year at Moctezuma (Smn), 1942 to 1986. The record is 43.9 C (111.0 F) in 1957, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Moctezuma (Smn) by year
Year	Hottest day (TXx)
1942	n/a
1943	n/a
1944	28.3 C (82.9 F)
1945	29.4 C (84.9 F)
1946	30.6 C (87.1 F)
1947	28.9 C (84.0 F)
1948	30.0 C (86.0 F)
1949	30.0 C (86.0 F)
1950	27.8 C (82.0 F)
1951	23.9 C (75.0 F)
1952	38.9 C (102.0 F)
1953	40.0 C (104.0 F)
1954	35.6 C (96.1 F)
1955	41.7 C (107.1 F)
1956	40.0 C (104.0 F)
1957	43.9 C (111.0 F)
1958	40.6 C (105.1 F)
1959	38.9 C (102.0 F)
1960	41.7 C (107.1 F)
1961	38.9 C (102.0 F)
1962	38.9 C (102.0 F)
1963	35.6 C (96.1 F)
1964	38.9 C (102.0 F)
1965	38.9 C (102.0 F)
1966	35.6 C (96.1 F)
1967	36.7 C (98.1 F)
1968	33.9 C (93.0 F)
1969	38.9 C (102.0 F)
1970	38.9 C (102.0 F)
1971	37.8 C (100.0 F)
1972	36.7 C (98.1 F)
1973	36.7 C (98.1 F)
1974	36.7 C (98.1 F)
1975	35.0 C (95.0 F)
1976	35.6 C (96.1 F)
1977	33.9 C (93.0 F)
1978	41.7 C (107.1 F)
1979	35.0 C (95.0 F)
1980	36.7 C (98.1 F)
1981	37.8 C (100.0 F)
1982	37.8 C (100.0 F)
1983	40.0 C (104.0 F)
1984	36.7 C (98.1 F)
1985	37.8 C (100.0 F)
1986	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Moctezuma (Smn), 1942 to 1986. The record is -12.2 C (10.0 F) in 1951, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at Moctezuma (Smn) by year
Year	Coldest night (TNn)
1942	n/a
1943	n/a
1944	0.0 C (32.0 F)
1945	0.0 C (32.0 F)
1946	0.0 C (32.0 F)
1947	-8.3 C (17.1 F)
1948	-7.2 C (19.0 F)
1949	-10.0 C (14.0 F)
1950	-9.4 C (15.1 F)
1951	-12.2 C (10.0 F)
1952	-10.0 C (14.0 F)
1953	0.6 C (33.1 F)
1954	0.6 C (33.1 F)
1955	0.6 C (33.1 F)
1956	0.6 C (33.1 F)
1957	0.6 C (33.1 F)
1958	-5.0 C (23.0 F)
1959	-5.0 C (23.0 F)
1960	-1.1 C (30.0 F)
1961	-3.3 C (26.1 F)
1962	-5.0 C (23.0 F)
1963	-4.4 C (24.1 F)
1964	-3.3 C (26.1 F)
1965	3.9 C (39.0 F)
1966	1.7 C (35.1 F)
1967	0.0 C (32.0 F)
1968	2.8 C (37.0 F)
1969	0.0 C (32.0 F)
1970	0.0 C (32.0 F)
1971	2.8 C (37.0 F)
1972	0.6 C (33.1 F)
1973	-3.3 C (26.1 F)
1974	0.6 C (33.1 F)
1975	0.0 C (32.0 F)
1976	-4.4 C (24.1 F)
1977	0.6 C (33.1 F)
1978	0.6 C (33.1 F)
1979	0.6 C (33.1 F)
1980	0.6 C (33.1 F)
1981	0.0 C (32.0 F)
1982	-3.3 C (26.1 F)
1983	-3.3 C (26.1 F)
1984	-2.2 C (28.0 F)
1985	-3.3 C (26.1 F)
1986	-3.3 C (26.1 F)

Wettest day (Rx1day)

The wettest day of the year at Moctezuma (Smn), 1942 to 1986. The record is 124.2 mm (4.9 in) in 1985, marked on the chart; the median year is 45.0 mm (1.8 in).

Wettest day (Rx1day) at Moctezuma (Smn) by year
Year	Wettest day (Rx1day)
1942	0.0 mm (0.00 in)
1943	61.5 mm (2.4 in)
1944	45.0 mm (1.8 in)
1945	23.9 mm (0.9 in)
1946	42.9 mm (1.7 in)
1947	50.8 mm (2.0 in)
1948	46.0 mm (1.8 in)
1949	63.8 mm (2.5 in)
1950	53.8 mm (2.1 in)
1951	59.9 mm (2.4 in)
1952	46.0 mm (1.8 in)
1953	42.9 mm (1.7 in)
1954	49.8 mm (2.0 in)
1955	42.9 mm (1.7 in)
1956	38.9 mm (1.5 in)
1957	37.8 mm (1.5 in)
1958	57.9 mm (2.3 in)
1959	47.8 mm (1.9 in)
1960	39.9 mm (1.6 in)
1961	45.0 mm (1.8 in)
1962	59.9 mm (2.4 in)
1963	54.9 mm (2.2 in)
1964	35.8 mm (1.4 in)
1965	46.0 mm (1.8 in)
1966	45.0 mm (1.8 in)
1967	30.0 mm (1.2 in)
1968	89.9 mm (3.5 in)
1969	24.9 mm (1.0 in)
1970	37.8 mm (1.5 in)
1971	39.9 mm (1.6 in)
1972	55.9 mm (2.2 in)
1973	24.9 mm (1.0 in)
1974	39.9 mm (1.6 in)
1975	57.9 mm (2.3 in)
1976	45.0 mm (1.8 in)
1977	50.8 mm (2.0 in)
1978	22.1 mm (0.9 in)
1979	54.9 mm (2.2 in)
1980	18.8 mm (0.7 in)
1981	39.9 mm (1.6 in)
1982	90.9 mm (3.6 in)
1983	50.8 mm (2.0 in)
1984	56.6 mm (2.2 in)
1985	124.2 mm (4.9 in)
1986	36.6 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Moctezuma (Smn), 1942 to 1986. The record is 151.9 mm (6.0 in) in 1965, marked on the chart; the median year is 68.9 mm (2.7 in).

Wettest five days (Rx5day) at Moctezuma (Smn) by year
Year	Wettest five days (Rx5day)
1942	0.0 mm (0.00 in)
1943	85.6 mm (3.4 in)
1944	79.1 mm (3.1 in)
1945	36.6 mm (1.4 in)
1946	44.7 mm (1.8 in)
1947	70.6 mm (2.8 in)
1948	64.5 mm (2.5 in)
1949	73.7 mm (2.9 in)
1950	99.5 mm (3.9 in)
1951	113.3 mm (4.5 in)
1952	52.4 mm (2.1 in)
1953	45.7 mm (1.8 in)
1954	80.5 mm (3.2 in)
1955	53.6 mm (2.1 in)
1956	78.5 mm (3.1 in)
1957	78.4 mm (3.1 in)
1958	76.7 mm (3.0 in)
1959	100.4 mm (4.0 in)
1960	41.7 mm (1.6 in)
1961	64.8 mm (2.6 in)
1962	59.9 mm (2.4 in)
1963	54.9 mm (2.2 in)
1964	67.6 mm (2.7 in)
1965	151.9 mm (6.0 in)
1966	57.9 mm (2.3 in)
1967	55.3 mm (2.2 in)
1968	89.9 mm (3.5 in)
1969	24.9 mm (1.0 in)
1970	95.7 mm (3.8 in)
1971	64.8 mm (2.6 in)
1972	98.3 mm (3.9 in)
1973	57.7 mm (2.3 in)
1974	41.7 mm (1.6 in)
1975	95.6 mm (3.8 in)
1976	120.4 mm (4.7 in)
1977	58.4 mm (2.3 in)
1978	67.1 mm (2.6 in)
1979	71.3 mm (2.8 in)
1980	26.4 mm (1.0 in)
1981	75.6 mm (3.0 in)
1982	95.0 mm (3.7 in)
1983	68.9 mm (2.7 in)
1984	72.3 mm (2.8 in)
1985	142.5 mm (5.6 in)
1986	49.8 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Moctezuma (Smn), 1942 to 1986. The record is 172 days in 1969, marked on the chart; the median year is 60 days.

Longest dry spell (CDD) at Moctezuma (Smn) by year
Year	Longest dry spell (CDD)
1942	31 days
1943	49 days
1944	51 days
1945	48 days
1946	43 days
1947	37 days
1948	30 days
1949	55 days
1950	87 days
1951	78 days
1952	59 days
1953	58 days
1954	39 days
1955	61 days
1956	59 days
1957	124 days
1958	47 days
1959	31 days
1960	60 days
1961	60 days
1962	95 days
1963	57 days
1964	138 days
1965	66 days
1966	73 days
1967	84 days
1968	82 days
1969	172 days
1970	79 days
1971	160 days
1972	59 days
1973	72 days
1974	69 days
1975	85 days
1976	58 days
1977	78 days
1978	48 days
1979	48 days
1980	55 days
1981	33 days
1982	108 days
1983	126 days
1984	89 days
1985	59 days
1986	113 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

42 years, 1943 to 1986

A day with at least 44.7 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 108.8 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Moctezuma (Smn): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.7 mm (1.8 in)
5 years	60.3 mm (2.4 in)
10 years	71.2 mm (2.8 in)
25 years	85.7 mm (3.4 in)
50 years	97.1 mm (3.8 in)	Longer than the 42 years of record
100 years	108.8 mm (4.3 in)	Longer than the 42 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, 42 years of values from 1943 to 1986.

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: 124.2 mm (4.9 in) in 1985; 90.9 mm (3.6 in) in 1982; 89.9 mm (3.5 in) in 1968.

Download the Data

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