Zimapan Weather Records (MXN00013044)

Record envelope, standing records and threshold days for Zimapan (MXN00013044), Mexico, with 50 years of record.

Key Facts for Zimapan

Zimapan (MXN00013044) is a weather station in Mexico at 20.82 latitude and -99.42 longitude, 2,075 m (6,807 ft) above sea level.
The station reports from 1941 to 1990, 50 years of record.
1,464 records set at Zimapan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Zimapan set a daily record low maximum temperature of 15.6 C (60.1 F) on 17 November 1990.

About the Station

Location: Mexico, 20.82 latitude, -99.42 longitude.
Elevation: 2,075 m (6,807 ft).
Period of record: 1941 to 1990, 50 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 Zimapan. 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 Zimapan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	-5.0 C (23.0 F)	n/a	n/a
Feb	38.9 C (102.0 F)	-6.1 C (21.0 F)	n/a	n/a
Mar	38.9 C (102.0 F)	-1.1 C (30.0 F)	n/a	n/a
Apr	41.7 C (107.1 F)	1.7 C (35.1 F)	n/a	n/a
May	45.0 C (113.0 F)	5.0 C (41.0 F)	n/a	n/a
Jun	38.3 C (100.9 F)	3.3 C (37.9 F)	n/a	n/a
Jul	37.8 C (100.0 F)	3.9 C (39.0 F)	n/a	n/a
Aug	37.8 C (100.0 F)	5.0 C (41.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	2.2 C (36.0 F)	n/a	n/a
Oct	37.8 C (100.0 F)	0.6 C (33.1 F)	n/a	n/a
Nov	37.8 C (100.0 F)	-4.4 C (24.1 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-5.0 C (23.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Zimapan still stand. 1944 holds the most, with 187.

Standing records at Zimapan by the year they were set
Year set	Standing records
1941	8
1942	103
1943	32
1944	187
1945	66
1946	113
1947	50
1948	29
1955	42
1956	22
1957	11
1958	10
1959	15
1960	26
1961	41
1962	29
1963	23
1964	42
1965	34
1966	48
1967	37
1968	45
1969	38
1970	42
1971	25
1972	25
1973	31
1974	37
1975	22
1976	43
1977	15
1978	14
1979	28
1980	14
1981	13
1982	12
1983	7
1984	12
1985	7
1986	6
1987	18
1988	18
1989	20
1990	4

Wettest Day of Each Month

Sep: 106.9 mm (4.2 in)

The wettest day on record for each calendar month at Zimapan. The most was 106.9 mm (4.2 in) on 29 September 1955.

Record daily precipitation for each month at Zimapan
Month	Record daily precipitation (mm)	Date
Jan	31.8 mm (1.3 in)	9 January 1967
Feb	39.9 mm (1.6 in)	8 February 1984
Mar	27.4 mm (1.1 in)	23 March 1967
Apr	39.9 mm (1.6 in)	13 April 1981
May	52.3 mm (2.1 in)	14 May 1956
Jun	75.9 mm (3.0 in)	23 June 1969
Jul	97.8 mm (3.9 in)	31 July 1988
Aug	47.8 mm (1.9 in)	6 August 1970
Sep	106.9 mm (4.2 in)	29 September 1955
Oct	55.9 mm (2.2 in)	13 October 1958
Nov	39.9 mm (1.6 in)	29 November 1968
Dec	29.0 mm (1.1 in)	3 December 1979

Period of Record Coverage

1941 to 1990

44 years of record at Zimapan, 1941 to 1990. 4 years have data for under 90 percent of days and are left out of rankings: 1941, 1955, 1978, 1990.

Days with data per year at Zimapan
Year	Days with data	Share of year	Complete
1941	88	24%	No
1942	359	98%	Yes
1943	365	100%	Yes
1944	353	96%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	364	99%	Yes
1955	245	67%	No
1956	365	100%	Yes
1957	363	99%	Yes
1958	334	92%	Yes
1959	334	92%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	358	98%	Yes
1963	353	97%	Yes
1964	351	96%	Yes
1965	353	97%	Yes
1966	351	96%	Yes
1967	349	96%	Yes
1968	350	96%	Yes
1969	364	100%	Yes
1970	361	99%	Yes
1971	364	100%	Yes
1972	364	99%	Yes
1973	364	100%	Yes
1974	362	99%	Yes
1975	332	91%	Yes
1976	363	99%	Yes
1977	361	99%	Yes
1978	302	83%	No
1979	364	100%	Yes
1980	364	99%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	362	99%	Yes
1984	365	100%	Yes
1985	362	99%	Yes
1986	363	99%	Yes
1987	331	91%	Yes
1988	364	99%	Yes
1989	361	99%	Yes
1990	29	8%	No

Latest Records

Latest records at Zimapan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 November 1990	Zimapan, MX	daily low max	15.6 C (60.1 F)	1.1 C (2.0 F)	47 years	21 of 100 (Routine)
16 November 1990	Zimapan, MX	daily low max	15.6 C (60.1 F)	2.7 C (4.9 F)	11 years	13 of 100 (Routine)
12 November 1990	Zimapan, MX	daily low min	0.0 C (32.0 F)	2.8 C (5.0 F)	28 years	19 of 100 (Routine)
11 November 1990	Zimapan, MX	daily low min	0.0 C (32.0 F)	1.7 C (3.1 F)	28 years	17 of 100 (Routine)
26 December 1989	Zimapan, MX	daily low min	-2.2 C (28.0 F)	2.2 C (4.0 F)	26 years	15 of 100 (Routine)
25 December 1989	Zimapan, MX	daily low min	-2.8 C (27.0 F)	2.2 C (4.0 F)	22 years	14 of 100 (Routine)
24 December 1989	Zimapan, MX	monthly low min	-5.0 C (23.0 F)	3.9 C (7.0 F)	17 years	27 of 100 (Routine)
24 December 1989	Zimapan, MX	daily low max (Tie)	11.7 C (53.1 F)	tie	20 years	2 of 100 (Routine)
23 December 1989	Zimapan, MX	monthly low min (Tie)	-1.1 C (30.0 F)	tie	17 years	4 of 100 (Routine)
9 December 1989	Zimapan, MX	daily low max	15.6 C (60.1 F)	2.2 C (4.0 F)	32 years	17 of 100 (Routine)
6 December 1989	Zimapan, MX	daily rain	7.9 mm (0.31 in)	5.6 mm (0.22 in)	48 years	20 of 100 (Routine)
3 December 1989	Zimapan, MX	daily low max	11.7 C (53.1 F)	3.3 C (5.9 F)	10 years	14 of 100 (Routine)
2 December 1989	Zimapan, MX	daily low max	12.8 C (55.0 F)	2.2 C (4.0 F)	16 years	12 of 100 (Routine)
22 November 1989	Zimapan, MX	daily rain	3.8 mm (0.15 in)	2.0 mm (0.08 in)	12 years	9 of 100 (Routine)
18 October 1989	Zimapan, MX	daily low max	15.0 C (59.0 F)	2.8 C (5.0 F)	22 years	16 of 100 (Routine)
12 October 1989	Zimapan, MX	daily low min	3.9 C (39.0 F)	0.5 C (0.9 F)	10 years	8 of 100 (Routine)
2 October 1989	Zimapan, MX	daily low min (Tie)	5.6 C (42.1 F)	tie	32 years	3 of 100 (Routine)
28 September 1989	Zimapan, MX	daily low max	13.9 C (57.0 F)	5.0 C (9.0 F)	20 years	22 of 100 (Routine)
24 September 1989	Zimapan, MX	daily low min	6.7 C (44.1 F)	0.5 C (0.9 F)	7 years	7 of 100 (Routine)
17 September 1989	Zimapan, MX	daily low max (Tie)	16.7 C (62.1 F)	tie	4 years	1 of 100 (Routine)

Climate Trend

36 complete years, 1942 to 1989

One stripe for each of 36 complete years at Zimapan, 1942 to 1989. Blue stripes are years cooler than the station's own mean of 19.5 C (67.2 F); red stripes are warmer. The coolest year was 1966, at 16.7 C (62.0 F), and the warmest was 1944, at 23.9 C (75.0 F). The strongest colour marks a difference of 4.4 C (7.9 F).

Annual mean temperature at Zimapan as warming stripes, 1942 to 1989
Year	Annual mean temperature	Difference from the station mean
1942	22.4 C	+2.88 C
1943	21.6 C	+2.08 C
1944	23.9 C	+4.37 C
1945	23.6 C	+4.01 C
1946	23.9 C	+4.32 C
1947	23.6 C	+4.02 C
1948	23.7 C	+4.12 C
1956	19.5 C	-0.07 C
1957	19.7 C	+0.13 C
1960	20.6 C	+1.09 C
1961	19.3 C	-0.29 C
1962	19.8 C	+0.26 C
1963	19.4 C	-0.16 C
1964	19.3 C	-0.26 C
1965	18.0 C	-1.55 C
1966	16.7 C	-2.85 C
1967	17.0 C	-2.54 C
1968	16.9 C	-2.66 C
1969	17.8 C	-1.75 C
1970	17.7 C	-1.86 C
1971	18.4 C	-1.14 C
1972	18.6 C	-0.91 C
1973	18.3 C	-1.26 C
1974	18.1 C	-1.41 C
1976	17.0 C	-2.51 C
1977	18.4 C	-1.16 C
1979	18.7 C	-0.86 C
1980	19.0 C	-0.59 C
1981	19.3 C	-0.23 C
1982	19.4 C	-0.12 C
1983	19.0 C	-0.53 C
1984	18.6 C	-0.95 C
1985	18.9 C	-0.63 C
1986	19.1 C	-0.40 C
1988	19.7 C	+0.12 C
1989	18.7 C	-0.86 C

The annual mean temperature here has fallen by 1.0 C (0.7 to 1.4) per decade over 1942 to 1989. In Fahrenheit: 1.8 F (1.2 to 2.5) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Zimapan
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-1.0 C (-1.4 to -0.7) per decade	-1.8 F (-2.5 to -1.2) per decade	1942 to 1989	36	Fall
Mean daily maximum	-0.9 C (-1.3 to -0.5) per decade	-1.6 F (-2.3 to -0.9) per decade	1942 to 1989	36	Fall
Mean daily minimum	-1.2 C (-1.6 to -0.7) per decade	-2.1 F (-2.9 to -1.3) per decade	1942 to 1989	36	Fall

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

1941 to 1990

Yearly extremes at Zimapan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1960	36.7 C (98.1 F)	44
Coldest night (TNn)	-6.1 C (21.0 F)	1976	0.0 C (32.0 F)	44
Wettest day (Rx1day)	106.9 mm (4.2 in)	1955	42.4 mm (1.7 in)	44
Wettest five days (Rx5day)	152.9 mm (6.0 in)	1955	74.7 mm (2.9 in)	44
Longest dry spell (CDD)	133 days	1970	57 days	44

Hottest day (TXx)

The hottest day of the year at Zimapan, 1941 to 1990. The record is 45.0 C (113.0 F) in 1960, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Zimapan by year
Year	Hottest day (TXx)
1941	31.7 C (89.1 F)
1942	40.0 C (104.0 F)
1943	38.9 C (102.0 F)
1944	38.9 C (102.0 F)
1945	33.9 C (93.0 F)
1946	35.6 C (96.1 F)
1947	35.0 C (95.0 F)
1948	32.8 C (91.0 F)
1955	36.7 C (98.1 F)
1956	38.9 C (102.0 F)
1957	33.9 C (93.0 F)
1958	37.8 C (100.0 F)
1959	37.8 C (100.0 F)
1960	45.0 C (113.0 F)
1961	41.1 C (106.0 F)
1962	38.9 C (102.0 F)
1963	40.6 C (105.1 F)
1964	41.7 C (107.1 F)
1965	38.3 C (100.9 F)
1966	36.7 C (98.1 F)
1967	34.4 C (93.9 F)
1968	31.7 C (89.1 F)
1969	35.0 C (95.0 F)
1970	35.6 C (96.1 F)
1971	35.6 C (96.1 F)
1972	37.8 C (100.0 F)
1973	36.7 C (98.1 F)
1974	38.9 C (102.0 F)
1975	36.7 C (98.1 F)
1976	35.6 C (96.1 F)
1977	36.7 C (98.1 F)
1978	35.6 C (96.1 F)
1979	39.4 C (102.9 F)
1980	35.0 C (95.0 F)
1981	35.0 C (95.0 F)
1982	37.2 C (99.0 F)
1983	38.9 C (102.0 F)
1984	35.6 C (96.1 F)
1985	35.6 C (96.1 F)
1986	37.2 C (99.0 F)
1987	36.1 C (97.0 F)
1988	38.3 C (100.9 F)
1989	37.8 C (100.0 F)
1990	25.6 C (78.1 F)

Coldest night (TNn)

The coldest night of the year at Zimapan, 1941 to 1990. The record is -6.1 C (21.0 F) in 1976, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at Zimapan by year
Year	Coldest night (TNn)
1941	5.6 C (42.1 F)
1942	3.9 C (39.0 F)
1943	2.8 C (37.0 F)
1944	2.8 C (37.0 F)
1945	15.0 C (59.0 F)
1946	5.6 C (42.1 F)
1947	2.8 C (37.0 F)
1948	15.0 C (59.0 F)
1955	0.0 C (32.0 F)
1956	-5.0 C (23.0 F)
1957	0.6 C (33.1 F)
1958	0.0 C (32.0 F)
1959	0.0 C (32.0 F)
1960	-4.4 C (24.1 F)
1961	0.0 C (32.0 F)
1962	-3.3 C (26.1 F)
1963	-3.9 C (25.0 F)
1964	-1.1 C (30.0 F)
1965	-3.9 C (25.0 F)
1966	-0.6 C (30.9 F)
1967	-0.6 C (30.9 F)
1968	-2.2 C (28.0 F)
1969	0.0 C (32.0 F)
1970	-4.4 C (24.1 F)
1971	0.0 C (32.0 F)
1972	-1.1 C (30.0 F)
1973	-4.4 C (24.1 F)
1974	0.0 C (32.0 F)
1975	-5.0 C (23.0 F)
1976	-6.1 C (21.0 F)
1977	0.0 C (32.0 F)
1978	0.6 C (33.1 F)
1979	0.0 C (32.0 F)
1980	0.0 C (32.0 F)
1981	0.0 C (32.0 F)
1982	0.0 C (32.0 F)
1983	0.0 C (32.0 F)
1984	2.2 C (36.0 F)
1985	-0.6 C (30.9 F)
1986	-3.3 C (26.1 F)
1987	-0.6 C (30.9 F)
1988	-0.6 C (30.9 F)
1989	-5.0 C (23.0 F)
1990	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at Zimapan, 1941 to 1990. The record is 106.9 mm (4.2 in) in 1955, marked on the chart; the median year is 42.4 mm (1.7 in).

Wettest day (Rx1day) at Zimapan by year
Year	Wettest day (Rx1day)
1941	20.6 mm (0.8 in)
1942	45.0 mm (1.8 in)
1943	35.8 mm (1.4 in)
1944	66.8 mm (2.6 in)
1945	27.9 mm (1.1 in)
1946	37.8 mm (1.5 in)
1947	45.0 mm (1.8 in)
1948	20.8 mm (0.8 in)
1955	106.9 mm (4.2 in)
1956	52.3 mm (2.1 in)
1957	62.0 mm (2.4 in)
1958	55.9 mm (2.2 in)
1959	30.0 mm (1.2 in)
1960	36.8 mm (1.4 in)
1961	38.4 mm (1.5 in)
1962	34.8 mm (1.4 in)
1963	31.0 mm (1.2 in)
1964	47.5 mm (1.9 in)
1965	47.0 mm (1.9 in)
1966	28.4 mm (1.1 in)
1967	45.0 mm (1.8 in)
1968	39.9 mm (1.6 in)
1969	75.9 mm (3.0 in)
1970	50.8 mm (2.0 in)
1971	46.0 mm (1.8 in)
1972	42.9 mm (1.7 in)
1973	41.9 mm (1.6 in)
1974	46.0 mm (1.8 in)
1975	39.9 mm (1.6 in)
1976	43.4 mm (1.7 in)
1977	40.9 mm (1.6 in)
1978	22.9 mm (0.9 in)
1979	49.8 mm (2.0 in)
1980	33.8 mm (1.3 in)
1981	54.4 mm (2.1 in)
1982	31.8 mm (1.3 in)
1983	20.3 mm (0.8 in)
1984	42.9 mm (1.7 in)
1985	34.8 mm (1.4 in)
1986	63.0 mm (2.5 in)
1987	38.4 mm (1.5 in)
1988	97.8 mm (3.9 in)
1989	45.5 mm (1.8 in)
1990	1.8 mm (0.07 in)

Wettest five days (Rx5day)

The wettest five days of the year at Zimapan, 1941 to 1990. The record is 152.9 mm (6.0 in) in 1955, marked on the chart; the median year is 74.7 mm (2.9 in).

Wettest five days (Rx5day) at Zimapan by year
Year	Wettest five days (Rx5day)
1941	21.4 mm (0.8 in)
1942	87.6 mm (3.4 in)
1943	55.1 mm (2.2 in)
1944	135.1 mm (5.3 in)
1945	60.2 mm (2.4 in)
1946	118.4 mm (4.7 in)
1947	110.8 mm (4.4 in)
1948	24.6 mm (1.0 in)
1955	152.9 mm (6.0 in)
1956	90.4 mm (3.6 in)
1957	131.4 mm (5.2 in)
1958	88.9 mm (3.5 in)
1959	56.7 mm (2.2 in)
1960	50.8 mm (2.0 in)
1961	77.0 mm (3.0 in)
1962	57.9 mm (2.3 in)
1963	49.8 mm (2.0 in)
1964	66.3 mm (2.6 in)
1965	88.9 mm (3.5 in)
1966	55.4 mm (2.2 in)
1967	98.4 mm (3.9 in)
1968	67.9 mm (2.7 in)
1969	97.3 mm (3.8 in)
1970	63.3 mm (2.5 in)
1971	80.5 mm (3.2 in)
1972	140.7 mm (5.5 in)
1973	108.1 mm (4.3 in)
1974	102.2 mm (4.0 in)
1975	72.4 mm (2.9 in)
1976	86.4 mm (3.4 in)
1977	47.9 mm (1.9 in)
1978	41.5 mm (1.6 in)
1979	90.2 mm (3.6 in)
1980	67.3 mm (2.6 in)
1981	80.8 mm (3.2 in)
1982	48.0 mm (1.9 in)
1983	38.4 mm (1.5 in)
1984	83.5 mm (3.3 in)
1985	56.6 mm (2.2 in)
1986	79.5 mm (3.1 in)
1987	48.4 mm (1.9 in)
1988	112.6 mm (4.4 in)
1989	63.6 mm (2.5 in)
1990	2.6 mm (0.10 in)

Longest dry spell (CDD)

The longest dry spell of the year at Zimapan, 1941 to 1990. The record is 133 days in 1970, marked on the chart; the median year is 57 days.

Longest dry spell (CDD) at Zimapan by year
Year	Longest dry spell (CDD)
1941	26 days
1942	79 days
1943	98 days
1944	54 days
1945	89 days
1946	56 days
1947	98 days
1948	60 days
1955	41 days
1956	106 days
1957	70 days
1958	52 days
1959	97 days
1960	61 days
1961	49 days
1962	102 days
1963	30 days
1964	28 days
1965	30 days
1966	29 days
1967	27 days
1968	30 days
1969	32 days
1970	133 days
1971	67 days
1972	51 days
1973	46 days
1974	58 days
1975	93 days
1976	82 days
1977	40 days
1978	36 days
1979	55 days
1980	64 days
1981	34 days
1982	79 days
1983	69 days
1984	58 days
1985	69 days
1986	101 days
1987	51 days
1988	86 days
1989	44 days
1990	28 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

39 years, 1942 to 1989

A day with at least 41.7 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 90.9 mm (3.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Zimapan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.7 mm (1.6 in)
5 years	54.4 mm (2.1 in)
10 years	62.9 mm (2.5 in)
25 years	74.0 mm (2.9 in)
50 years	82.4 mm (3.2 in)	Longer than the 39 years of record
100 years	90.9 mm (3.6 in)	Longer than the 39 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, 39 years of values from 1942 to 1989.

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: 97.8 mm (3.9 in) in 1988; 75.9 mm (3.0 in) in 1969; 66.8 mm (2.6 in) in 1944.

Download the Data

Data for Zimapan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Zimapan 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 2026-10-16 (16 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).