Gran Canal KM 46+930 Weather Records (MXN00015042)

Record envelope, standing records and threshold days for Gran Canal KM 46+930 (MXN00015042), Mexico, with 30 years of record.

Key Facts for Gran Canal KM 46+930

Gran Canal KM 46+930 (MXN00015042) is a weather station in Mexico at 19.80 latitude and -99.10 longitude, 2,363 m (7,752 ft) above sea level.
The station reports from 1961 to 1990, 30 years of record.
1,464 records set at Gran Canal KM 46+930 still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 19.80 latitude, -99.10 longitude.
Elevation: 2,363 m (7,752 ft).
Period of record: 1961 to 1990, 30 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 Gran Canal KM 46+930. 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 Gran Canal KM 46+930, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.9 C (84.0 F)	-8.3 C (17.1 F)	n/a	n/a
Feb	30.0 C (86.0 F)	-10.0 C (14.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Apr	35.0 C (95.0 F)	-3.3 C (26.1 F)	n/a	n/a
May	36.7 C (98.1 F)	1.7 C (35.1 F)	n/a	n/a
Jun	31.7 C (89.1 F)	1.7 C (35.1 F)	n/a	n/a
Jul	28.9 C (84.0 F)	2.8 C (37.0 F)	n/a	n/a
Aug	28.9 C (84.0 F)	2.8 C (37.0 F)	n/a	n/a
Sep	30.0 C (86.0 F)	-1.7 C (28.9 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-5.0 C (23.0 F)	n/a	n/a
Nov	28.9 C (84.0 F)	-7.8 C (18.0 F)	n/a	n/a
Dec	26.7 C (80.1 F)	-8.3 C (17.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Gran Canal KM 46+930 still stand. 1983 holds the most, with 92.

Standing records at Gran Canal KM 46+930 by the year they were set
Year set	Standing records
1961	90
1962	82
1963	51
1964	55
1965	62
1966	68
1967	49
1968	26
1969	49
1970	61
1971	36
1972	43
1973	35
1974	31
1975	32
1976	33
1977	54
1978	42
1979	48
1980	53
1981	42
1982	57
1983	92
1984	37
1985	31
1986	36
1987	72
1988	37
1989	43
1990	17

Wettest Day of Each Month

Sep: 67.8 mm (2.7 in)

The wettest day on record for each calendar month at Gran Canal KM 46+930. The most was 67.8 mm (2.7 in) on 27 September 1967.

Record daily precipitation for each month at Gran Canal KM 46+930
Month	Record daily precipitation (mm)	Date
Jan	29.5 mm (1.2 in)	10 January 1967
Feb	17.8 mm (0.7 in)	26 February 1982
Mar	53.8 mm (2.1 in)	30 March 1965
Apr	49.8 mm (2.0 in)	28 April 1965
May	37.6 mm (1.5 in)	24 May 1977
Jun	63.2 mm (2.5 in)	5 June 1986
Jul	48.3 mm (1.9 in)	3 July 1984
Aug	56.9 mm (2.2 in)	31 August 1988
Sep	67.8 mm (2.7 in)	27 September 1967
Oct	61.0 mm (2.4 in)	17 October 1974
Nov	26.4 mm (1.0 in)	2 November 1980
Dec	17.3 mm (0.7 in)	2 December 1984

Period of Record Coverage

1961 to 1990

30 years of record at Gran Canal KM 46+930, 1961 to 1990. 3 years have data for under 90 percent of days and are left out of rankings: 1968, 1989, 1990.

Days with data per year at Gran Canal KM 46+930
Year	Days with data	Share of year	Complete
1961	334	92%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	306	84%	No
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	336	92%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	334	92%	Yes
1980	365	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	365	100%	Yes
1989	306	84%	No
1990	245	67%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

24 complete years, 1962 to 1988

One stripe for each of 24 complete years at Gran Canal KM 46+930, 1962 to 1988. Blue stripes are years cooler than the station's own mean of 14.7 C (58.4 F); red stripes are warmer. The coolest year was 1974, at 14.1 C (57.3 F), and the warmest was 1962, at 15.3 C (59.5 F). The strongest colour marks a difference of 0.7 C (1.3 F).

Annual mean temperature at Gran Canal KM 46+930 as warming stripes, 1962 to 1988
Year	Annual mean temperature	Difference from the station mean
1962	15.3 C	+0.61 C
1963	14.3 C	-0.38 C
1964	14.8 C	+0.12 C
1965	14.4 C	-0.27 C
1966	14.6 C	-0.07 C
1967	14.4 C	-0.28 C
1969	14.7 C	+0.08 C
1970	14.3 C	-0.37 C
1971	14.3 C	-0.41 C
1972	14.7 C	-0.01 C
1973	14.5 C	-0.15 C
1974	14.1 C	-0.60 C
1975	14.2 C	-0.46 C
1977	14.7 C	0.00 C
1978	14.9 C	+0.22 C
1980	15.0 C	+0.32 C
1981	14.7 C	+0.03 C
1982	15.1 C	+0.42 C
1983	14.9 C	+0.28 C
1984	14.6 C	-0.05 C
1985	14.7 C	+0.04 C
1986	14.8 C	+0.13 C
1987	15.1 C	+0.47 C
1988	15.1 C	+0.43 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

1961 to 1990

Yearly extremes at Gran Canal KM 46+930: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1988	31.7 C (89.1 F)	30
Coldest night (TNn)	-10.0 C (14.0 F)	1976	-5.0 C (23.0 F)	30
Wettest day (Rx1day)	67.8 mm (2.7 in)	1967	42.2 mm (1.7 in)	30
Wettest five days (Rx5day)	129.2 mm (5.1 in)	1970	75.1 mm (3.0 in)	30
Longest dry spell (CDD)	102 days	1986	58 days	30

Hottest day (TXx)

The hottest day of the year at Gran Canal KM 46+930, 1961 to 1990. The record is 36.7 C (98.1 F) in 1988, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Gran Canal KM 46+930 by year
Year	Hottest day (TXx)
1961	32.2 C (90.0 F)
1962	32.2 C (90.0 F)
1963	30.0 C (86.0 F)
1964	31.7 C (89.1 F)
1965	30.0 C (86.0 F)
1966	30.0 C (86.0 F)
1967	30.6 C (87.1 F)
1968	30.6 C (87.1 F)
1969	31.1 C (88.0 F)
1970	31.7 C (89.1 F)
1971	32.2 C (90.0 F)
1972	30.0 C (86.0 F)
1973	32.2 C (90.0 F)
1974	31.7 C (89.1 F)
1975	30.6 C (87.1 F)
1976	30.0 C (86.0 F)
1977	31.7 C (89.1 F)
1978	32.8 C (91.0 F)
1979	31.1 C (88.0 F)
1980	31.7 C (89.1 F)
1981	31.7 C (89.1 F)
1982	32.8 C (91.0 F)
1983	33.9 C (93.0 F)
1984	32.2 C (90.0 F)
1985	30.6 C (87.1 F)
1986	35.0 C (95.0 F)
1987	31.1 C (88.0 F)
1988	36.7 C (98.1 F)
1989	31.7 C (89.1 F)
1990	33.9 C (93.0 F)

Coldest night (TNn)

The coldest night of the year at Gran Canal KM 46+930, 1961 to 1990. The record is -10.0 C (14.0 F) in 1976, marked on the chart; the median year is -5.0 C (23.0 F).

Coldest night (TNn) at Gran Canal KM 46+930 by year
Year	Coldest night (TNn)
1961	-6.1 C (21.0 F)
1962	0.0 C (32.0 F)
1963	0.0 C (32.0 F)
1964	0.0 C (32.0 F)
1965	-2.2 C (28.0 F)
1966	0.0 C (32.0 F)
1967	-5.0 C (23.0 F)
1968	-2.2 C (28.0 F)
1969	-5.0 C (23.0 F)
1970	-7.2 C (19.0 F)
1971	-4.4 C (24.1 F)
1972	-5.0 C (23.0 F)
1973	-8.3 C (17.1 F)
1974	-7.8 C (18.0 F)
1975	-8.3 C (17.1 F)
1976	-10.0 C (14.0 F)
1977	-5.0 C (23.0 F)
1978	-5.0 C (23.0 F)
1979	-5.0 C (23.0 F)
1980	-6.1 C (21.0 F)
1981	-5.6 C (21.9 F)
1982	-6.1 C (21.0 F)
1983	-5.6 C (21.9 F)
1984	-5.6 C (21.9 F)
1985	-5.0 C (23.0 F)
1986	-5.0 C (23.0 F)
1987	0.0 C (32.0 F)
1988	-3.9 C (25.0 F)
1989	-7.2 C (19.0 F)
1990	-2.2 C (28.0 F)

Wettest day (Rx1day)

The wettest day of the year at Gran Canal KM 46+930, 1961 to 1990. The record is 67.8 mm (2.7 in) in 1967, marked on the chart; the median year is 42.2 mm (1.7 in).

Wettest day (Rx1day) at Gran Canal KM 46+930 by year
Year	Wettest day (Rx1day)
1961	37.8 mm (1.5 in)
1962	41.9 mm (1.6 in)
1963	25.9 mm (1.0 in)
1964	26.9 mm (1.1 in)
1965	53.8 mm (2.1 in)
1966	26.9 mm (1.1 in)
1967	67.8 mm (2.7 in)
1968	36.8 mm (1.4 in)
1969	39.9 mm (1.6 in)
1970	55.9 mm (2.2 in)
1971	39.6 mm (1.6 in)
1972	39.9 mm (1.6 in)
1973	33.8 mm (1.3 in)
1974	61.0 mm (2.4 in)
1975	42.4 mm (1.7 in)
1976	55.6 mm (2.2 in)
1977	50.3 mm (2.0 in)
1978	48.3 mm (1.9 in)
1979	29.0 mm (1.1 in)
1980	49.3 mm (1.9 in)
1981	45.5 mm (1.8 in)
1982	26.9 mm (1.1 in)
1983	35.8 mm (1.4 in)
1984	48.3 mm (1.9 in)
1985	55.4 mm (2.2 in)
1986	63.2 mm (2.5 in)
1987	22.4 mm (0.9 in)
1988	56.9 mm (2.2 in)
1989	25.4 mm (1.0 in)
1990	44.7 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Gran Canal KM 46+930, 1961 to 1990. The record is 129.2 mm (5.1 in) in 1970, marked on the chart; the median year is 75.1 mm (3.0 in).

Wettest five days (Rx5day) at Gran Canal KM 46+930 by year
Year	Wettest five days (Rx5day)
1961	65.4 mm (2.6 in)
1962	76.2 mm (3.0 in)
1963	65.3 mm (2.6 in)
1964	49.6 mm (2.0 in)
1965	64.5 mm (2.5 in)
1966	50.6 mm (2.0 in)
1967	105.9 mm (4.2 in)
1968	81.3 mm (3.2 in)
1969	72.0 mm (2.8 in)
1970	129.2 mm (5.1 in)
1971	75.7 mm (3.0 in)
1972	53.9 mm (2.1 in)
1973	104.0 mm (4.1 in)
1974	105.9 mm (4.2 in)
1975	73.5 mm (2.9 in)
1976	90.7 mm (3.6 in)
1977	78.1 mm (3.1 in)
1978	71.9 mm (2.8 in)
1979	47.5 mm (1.9 in)
1980	74.5 mm (2.9 in)
1981	90.1 mm (3.5 in)
1982	27.2 mm (1.1 in)
1983	63.8 mm (2.5 in)
1984	100.7 mm (4.0 in)
1985	86.7 mm (3.4 in)
1986	116.1 mm (4.6 in)
1987	43.5 mm (1.7 in)
1988	110.3 mm (4.3 in)
1989	57.5 mm (2.3 in)
1990	87.2 mm (3.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Gran Canal KM 46+930, 1961 to 1990. The record is 102 days in 1986, marked on the chart; the median year is 58 days.

Longest dry spell (CDD) at Gran Canal KM 46+930 by year
Year	Longest dry spell (CDD)
1961	85 days
1962	55 days
1963	60 days
1964	45 days
1965	50 days
1966	48 days
1967	55 days
1968	35 days
1969	62 days
1970	70 days
1971	76 days
1972	57 days
1973	76 days
1974	34 days
1975	65 days
1976	33 days
1977	62 days
1978	41 days
1979	41 days
1980	51 days
1981	58 days
1982	60 days
1983	67 days
1984	92 days
1985	43 days
1986	102 days
1987	63 days
1988	39 days
1989	58 days
1990	33 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

24 years with a frost

Across 24 years with a frost, the median last spring frost at Gran Canal KM 46+930 falls on 12 March and the median first autumn frost on 1 November, which leaves a median of 228 days between them.

Frost dates and growing season at Gran Canal KM 46+930
Measure	Median, all years	Earliest period	Recent period (1962 to 1988)	Recent against earliest	Fitted trend
Last spring frost	12 March	n/a	12 March	n/a	n/a
First autumn frost	1 November	n/a	1 November	n/a	n/a
Growing days	228 days	n/a	228 days	n/a	n/a

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.

Download the Data

Data for Gran Canal KM 46+930 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Gran Canal KM 46+930 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).