Calkini (Smn) Weather Records (MXN00004002)

Record envelope, standing records and threshold days for Calkini (Smn) (MXN00004002), Mexico, with 52 years of record.

Key Facts for Calkini (Smn)

Calkini (Smn) (MXN00004002) is a weather station in Mexico at 20.35 latitude and -90.05 longitude, 15 m (49 ft) above sea level.
The station reports from 1950 to 2001, 52 years of record.
1,464 records set at Calkini (Smn) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Calkini (Smn) set a daily record precipitation of 19.8 mm (0.8 in) on 27 December 2001.

About the Station

Location: Mexico, 20.35 latitude, -90.05 longitude.
Elevation: 15 m (49 ft).
Period of record: 1950 to 2001, 52 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 Calkini (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 Calkini (Smn), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	40.0 C (104.0 F)	3.9 C (39.0 F)	n/a	n/a
Feb	40.6 C (105.1 F)	5.0 C (41.0 F)	n/a	n/a
Mar	45.6 C (114.1 F)	5.6 C (42.1 F)	n/a	n/a
Apr	46.1 C (115.0 F)	10.0 C (50.0 F)	n/a	n/a
May	46.1 C (115.0 F)	10.0 C (50.0 F)	n/a	n/a
Jun	45.0 C (113.0 F)	8.9 C (48.0 F)	n/a	n/a
Jul	42.2 C (108.0 F)	12.2 C (54.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	11.7 C (53.1 F)	n/a	n/a
Sep	40.6 C (105.1 F)	11.7 C (53.1 F)	n/a	n/a
Oct	38.9 C (102.0 F)	7.2 C (45.0 F)	n/a	n/a
Nov	38.3 C (100.9 F)	5.0 C (41.0 F)	n/a	n/a
Dec	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Calkini (Smn) still stand. 1997 holds the most, with 260.

Standing records at Calkini (Smn) by the year they were set
Year set	Standing records
1950	4
1951	56
1952	21
1953	13
1954	8
1955	17
1956	24
1957	22
1958	37
1959	170
1960	110
1961	23
1962	33
1963	36
1964	35
1965	18
1966	31
1967	14
1968	10
1969	6
1970	20
1971	62
1972	9
1974	14
1975	14
1982	1
1984	4
1985	14
1986	18
1987	13
1988	9
1989	15
1991	6
1992	4
1993	4
1994	4
1995	1
1996	142
1997	260
1998	24
1999	105
2000	26
2001	7

All-Time Record Progression

2 new records

2 all-time records were set at Calkini (Smn) between 18 January 1997 and 19 January 1997. Each dot is a new record.

When Calkini (Smn) set new all-time records
Date	Kind	Detail
1997-01-18	Record low minimum temperature	Record low minimum temperature 4.4 C (39.9 F)
1997-01-19	Record low minimum temperature	Record low minimum temperature 3.9 C (39.0 F)

Wettest Day of Each Month

Sep: 199.9 mm (7.9 in)

The wettest day on record for each calendar month at Calkini (Smn). The most was 199.9 mm (7.9 in) on 14 September 1988.

Record daily precipitation for each month at Calkini (Smn)
Month	Record daily precipitation (mm)	Date
Jan	57.4 mm (2.3 in)	6 January 1971
Feb	47.8 mm (1.9 in)	22 February 1966
Mar	63.8 mm (2.5 in)	18 March 1961
Apr	62.5 mm (2.5 in)	13 April 1970
May	133.4 mm (5.3 in)	3 May 1966
Jun	137.9 mm (5.4 in)	18 June 1993
Jul	142.7 mm (5.6 in)	1 July 1966
Aug	95.8 mm (3.8 in)	26 August 1958
Sep	199.9 mm (7.9 in)	14 September 1988
Oct	149.9 mm (5.9 in)	2 October 1995
Nov	105.9 mm (4.2 in)	6 November 1961
Dec	89.7 mm (3.5 in)	4 December 1982

Period of Record Coverage

1950 to 2001

44 years of record at Calkini (Smn), 1950 to 2001. 8 years have data for under 90 percent of days and are left out of rankings: 1950, 1972, 1974, 1982, 1984, 1989, 1990, 2000.

Days with data per year at Calkini (Smn)
Year	Days with data	Share of year	Complete
1950	245	67%	No
1951	364	100%	Yes
1952	366	100%	Yes
1953	334	92%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	334	92%	Yes
1960	335	92%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	364	100%	Yes
1968	366	100%	Yes
1969	362	99%	Yes
1970	360	99%	Yes
1971	363	99%	Yes
1972	181	49%	No
1974	183	50%	No
1975	362	99%	Yes
1982	61	17%	No
1984	304	83%	No
1985	354	97%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	334	91%	Yes
1989	252	69%	No
1990	214	59%	No
1991	353	97%	Yes
1992	350	96%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	336	92%	Yes
1997	364	100%	Yes
1998	334	92%	Yes
1999	365	100%	Yes
2000	305	83%	No
2001	335	92%	Yes

Latest Records

Latest records at Calkini (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 December 2001	Calkini (Smn), MX	daily rain	19.8 mm (0.8 in)	1.0 mm (0.04 in)	4 years	6 of 100 (Routine)
25 December 2001	Calkini (Smn), MX	daily rain	19.8 mm (0.8 in)	7.9 mm (0.31 in)	4 years	10 of 100 (Routine)
23 December 2001	Calkini (Smn), MX	daily rain	17.8 mm (0.7 in)	2.8 mm (0.11 in)	2 years	6 of 100 (Routine)
19 December 2001	Calkini (Smn), MX	daily rain	24.9 mm (1.0 in)	13.0 mm (0.5 in)	46 years	20 of 100 (Routine)
17 December 2001	Calkini (Smn), MX	daily rain	17.8 mm (0.7 in)	8.9 mm (0.35 in)	47 years	20 of 100 (Routine)
4 November 2001	Calkini (Smn), MX	daily rain	37.8 mm (1.5 in)	14.9 mm (0.6 in)	40 years	25 of 100 (Routine)
3 November 2001	Calkini (Smn), MX	daily rain	57.9 mm (2.3 in)	18.0 mm (0.7 in)	19 years	20 of 100 (Routine)
17 October 2001	Calkini (Smn), MX	daily rain	17.8 mm (0.7 in)	4.3 mm (0.17 in)	46 years	20 of 100 (Routine)
7 October 2001	Calkini (Smn), MX	daily high max	37.8 C (100.0 F)	0.6 C (1.1 F)	35 years	16 of 100 (Routine)
30 July 2001	Calkini (Smn), MX	daily low max	28.9 C (84.0 F)	0.5 C (0.9 F)	40 years	18 of 100 (Routine)
29 July 2001	Calkini (Smn), MX	daily low max	27.8 C (82.0 F)	1.1 C (2.0 F)	40 years	20 of 100 (Routine)
28 July 2001	Calkini (Smn), MX	daily low max (Tie)	28.9 C (84.0 F)	tie	4 years	1 of 100 (Routine)
27 July 2001	Calkini (Smn), MX	daily low max	26.7 C (80.1 F)	2.2 C (4.0 F)	4 years	13 of 100 (Routine)
4 July 2001	Calkini (Smn), MX	daily rain	39.9 mm (1.6 in)	3.6 mm (0.14 in)	31 years	16 of 100 (Routine)
22 June 2001	Calkini (Smn), MX	daily rain	39.9 mm (1.6 in)	4.1 mm (0.16 in)	6 years	8 of 100 (Routine)
28 May 2001	Calkini (Smn), MX	daily rain	74.9 mm (2.9 in)	34.0 mm (1.3 in)	8 years	24 of 100 (Routine)
27 May 2001	Calkini (Smn), MX	daily rain	59.9 mm (2.4 in)	20.0 mm (0.8 in)	3 years	15 of 100 (Routine)
16 May 2001	Calkini (Smn), MX	daily rain	19.8 mm (0.8 in)	11.4 mm (0.4 in)	6 years	11 of 100 (Routine)
10 May 2001	Calkini (Smn), MX	daily rain	23.9 mm (0.9 in)	5.1 mm (0.20 in)	44 years	20 of 100 (Routine)
24 March 2001	Calkini (Smn), MX	daily low max (Tie)	25.6 C (78.1 F)	tie	32 years	3 of 100 (Routine)

Climate Trend

28 complete years, 1951 to 1999

One stripe for each of 28 complete years at Calkini (Smn), 1951 to 1999. Blue stripes are years cooler than the station's own mean of 26.7 C (80.0 F); red stripes are warmer. The coolest year was 1997, at 21.4 C (70.5 F), and the warmest was 1971, at 28.9 C (84.0 F). The strongest colour marks a difference of 5.4 C (9.7 F).

Annual mean temperature at Calkini (Smn) as warming stripes, 1951 to 1999
Year	Annual mean temperature	Difference from the station mean
1951	28.4 C	+1.77 C
1952	27.7 C	+1.02 C
1954	27.2 C	+0.48 C
1955	27.4 C	+0.71 C
1956	27.5 C	+0.82 C
1957	28.1 C	+1.45 C
1958	27.9 C	+1.26 C
1961	27.0 C	+0.34 C
1962	27.1 C	+0.47 C
1963	27.0 C	+0.37 C
1964	27.4 C	+0.72 C
1965	26.9 C	+0.21 C
1966	26.5 C	-0.22 C
1967	26.1 C	-0.62 C
1968	25.6 C	-1.08 C
1969	26.7 C	-0.01 C
1970	27.5 C	+0.87 C
1971	28.9 C	+2.20 C
1975	27.2 C	+0.49 C
1985	25.9 C	-0.77 C
1986	26.5 C	-0.15 C
1987	26.8 C	+0.10 C
1991	26.8 C	+0.11 C
1993	26.1 C	-0.57 C
1994	26.4 C	-0.24 C
1995	27.0 C	+0.37 C
1997	21.4 C	-5.30 C
1999	21.9 C	-4.76 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

1950 to 2001

Yearly extremes at Calkini (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.1 C (115.0 F)	1958	41.7 C (107.1 F)	44
Coldest night (TNn)	3.9 C (39.0 F)	1997	8.9 C (48.0 F)	44
Wettest day (Rx1day)	199.9 mm (7.9 in)	1988	79.8 mm (3.1 in)	44
Wettest five days (Rx5day)	351.6 mm (13.8 in)	1995	132.0 mm (5.2 in)	44
Longest dry spell (CDD)	124 days	1971	39 days	44

Hottest day (TXx)

The hottest day of the year at Calkini (Smn), 1950 to 2001. The record is 46.1 C (115.0 F) in 1958, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Calkini (Smn) by year
Year	Hottest day (TXx)
1950	42.8 C (109.0 F)
1951	43.9 C (111.0 F)
1952	42.8 C (109.0 F)
1953	45.6 C (114.1 F)
1954	42.2 C (108.0 F)
1955	44.4 C (111.9 F)
1956	42.8 C (109.0 F)
1957	45.6 C (114.1 F)
1958	46.1 C (115.0 F)
1959	34.4 C (93.9 F)
1960	39.4 C (102.9 F)
1961	44.4 C (111.9 F)
1962	43.3 C (109.9 F)
1963	44.4 C (111.9 F)
1964	46.1 C (115.0 F)
1965	43.9 C (111.0 F)
1966	41.1 C (106.0 F)
1967	40.0 C (104.0 F)
1968	37.2 C (99.0 F)
1969	41.1 C (106.0 F)
1970	43.9 C (111.0 F)
1971	46.1 C (115.0 F)
1972	42.2 C (108.0 F)
1974	40.0 C (104.0 F)
1975	42.8 C (109.0 F)
1982	36.7 C (98.1 F)
1984	40.6 C (105.1 F)
1985	40.0 C (104.0 F)
1986	41.7 C (107.1 F)
1987	42.8 C (109.0 F)
1988	41.7 C (107.1 F)
1989	42.8 C (109.0 F)
1990	36.7 C (98.1 F)
1991	41.7 C (107.1 F)
1992	37.8 C (100.0 F)
1993	40.0 C (104.0 F)
1994	40.0 C (104.0 F)
1995	41.7 C (107.1 F)
1996	40.0 C (104.0 F)
1997	40.6 C (105.1 F)
1998	37.8 C (100.0 F)
1999	38.9 C (102.0 F)
2000	40.6 C (105.1 F)
2001	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Calkini (Smn), 1950 to 2001. The record is 3.9 C (39.0 F) in 1997, marked on the chart; the median year is 8.9 C (48.0 F).

Coldest night (TNn) at Calkini (Smn) by year
Year	Coldest night (TNn)
1950	9.4 C (48.9 F)
1951	5.0 C (41.0 F)
1952	9.4 C (48.9 F)
1953	9.4 C (48.9 F)
1954	8.3 C (46.9 F)
1955	10.0 C (50.0 F)
1956	8.3 C (46.9 F)
1957	11.1 C (52.0 F)
1958	8.9 C (48.0 F)
1959	14.4 C (57.9 F)
1960	11.1 C (52.0 F)
1961	10.0 C (50.0 F)
1962	8.9 C (48.0 F)
1963	6.1 C (43.0 F)
1964	7.2 C (45.0 F)
1965	6.1 C (43.0 F)
1966	7.2 C (45.0 F)
1967	8.9 C (48.0 F)
1968	8.3 C (46.9 F)
1969	11.1 C (52.0 F)
1970	8.9 C (48.0 F)
1971	9.4 C (48.9 F)
1972	10.0 C (50.0 F)
1974	7.8 C (46.0 F)
1975	7.8 C (46.0 F)
1982	10.6 C (51.1 F)
1984	10.0 C (50.0 F)
1985	7.8 C (46.0 F)
1986	5.6 C (42.1 F)
1987	7.8 C (46.0 F)
1988	7.8 C (46.0 F)
1989	10.6 C (51.1 F)
1990	7.8 C (46.0 F)
1991	8.9 C (48.0 F)
1992	10.6 C (51.1 F)
1993	11.1 C (52.0 F)
1994	8.9 C (48.0 F)
1995	10.0 C (50.0 F)
1996	5.0 C (41.0 F)
1997	3.9 C (39.0 F)
1998	5.6 C (42.1 F)
1999	6.7 C (44.1 F)
2000	5.6 C (42.1 F)
2001	6.7 C (44.1 F)

Wettest day (Rx1day)

The wettest day of the year at Calkini (Smn), 1950 to 2001. The record is 199.9 mm (7.9 in) in 1988, marked on the chart; the median year is 79.8 mm (3.1 in).

Wettest day (Rx1day) at Calkini (Smn) by year
Year	Wettest day (Rx1day)
1950	91.9 mm (3.6 in)
1951	74.9 mm (2.9 in)
1952	114.8 mm (4.5 in)
1953	58.9 mm (2.3 in)
1954	58.9 mm (2.3 in)
1955	79.8 mm (3.1 in)
1956	78.0 mm (3.1 in)
1957	79.8 mm (3.1 in)
1958	95.8 mm (3.8 in)
1959	78.0 mm (3.1 in)
1960	96.8 mm (3.8 in)
1961	105.9 mm (4.2 in)
1962	89.9 mm (3.5 in)
1963	81.8 mm (3.2 in)
1964	62.5 mm (2.5 in)
1965	89.4 mm (3.5 in)
1966	142.7 mm (5.6 in)
1967	84.8 mm (3.3 in)
1968	55.4 mm (2.2 in)
1969	81.3 mm (3.2 in)
1970	67.3 mm (2.6 in)
1971	57.4 mm (2.3 in)
1972	75.4 mm (3.0 in)
1974	34.8 mm (1.4 in)
1975	52.6 mm (2.1 in)
1982	89.7 mm (3.5 in)
1984	72.4 mm (2.9 in)
1985	83.1 mm (3.3 in)
1986	45.0 mm (1.8 in)
1987	58.4 mm (2.3 in)
1988	199.9 mm (7.9 in)
1989	117.9 mm (4.6 in)
1990	59.9 mm (2.4 in)
1991	84.8 mm (3.3 in)
1992	59.9 mm (2.4 in)
1993	137.9 mm (5.4 in)
1994	82.3 mm (3.2 in)
1995	149.9 mm (5.9 in)
1996	52.3 mm (2.1 in)
1997	53.8 mm (2.1 in)
1998	79.8 mm (3.1 in)
1999	63.0 mm (2.5 in)
2000	140.0 mm (5.5 in)
2001	74.9 mm (2.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Calkini (Smn), 1950 to 2001. The record is 351.6 mm (13.8 in) in 1995, marked on the chart; the median year is 132.0 mm (5.2 in).

Wettest five days (Rx5day) at Calkini (Smn) by year
Year	Wettest five days (Rx5day)
1950	123.4 mm (4.9 in)
1951	149.1 mm (5.9 in)
1952	149.4 mm (5.9 in)
1953	128.8 mm (5.1 in)
1954	105.2 mm (4.1 in)
1955	123.2 mm (4.9 in)
1956	140.6 mm (5.5 in)
1957	131.4 mm (5.2 in)
1958	146.9 mm (5.8 in)
1959	158.1 mm (6.2 in)
1960	132.6 mm (5.2 in)
1961	176.1 mm (6.9 in)
1962	145.5 mm (5.7 in)
1963	143.0 mm (5.6 in)
1964	115.8 mm (4.6 in)
1965	116.6 mm (4.6 in)
1966	262.7 mm (10.3 in)
1967	101.9 mm (4.0 in)
1968	132.5 mm (5.2 in)
1969	133.9 mm (5.3 in)
1970	121.7 mm (4.8 in)
1971	83.5 mm (3.3 in)
1972	95.0 mm (3.7 in)
1974	62.5 mm (2.5 in)
1975	118.2 mm (4.7 in)
1982	124.5 mm (4.9 in)
1984	122.5 mm (4.8 in)
1985	191.3 mm (7.5 in)
1986	70.4 mm (2.8 in)
1987	121.0 mm (4.8 in)
1988	264.9 mm (10.4 in)
1989	195.9 mm (7.7 in)
1990	140.3 mm (5.5 in)
1991	186.1 mm (7.3 in)
1992	89.6 mm (3.5 in)
1993	190.2 mm (7.5 in)
1994	101.6 mm (4.0 in)
1995	351.6 mm (13.8 in)
1996	78.4 mm (3.1 in)
1997	116.4 mm (4.6 in)
1998	135.3 mm (5.3 in)
1999	130.8 mm (5.1 in)
2000	202.8 mm (8.0 in)
2001	154.6 mm (6.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Calkini (Smn), 1950 to 2001. The record is 124 days in 1971, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Calkini (Smn) by year
Year	Longest dry spell (CDD)
1950	22 days
1951	44 days
1952	78 days
1953	39 days
1954	35 days
1955	44 days
1956	41 days
1957	29 days
1958	34 days
1959	52 days
1960	77 days
1961	41 days
1962	65 days
1963	68 days
1964	58 days
1965	78 days
1966	38 days
1967	81 days
1968	100 days
1969	89 days
1970	69 days
1971	124 days
1972	80 days
1974	39 days
1975	81 days
1982	17 days
1984	29 days
1985	14 days
1986	19 days
1987	30 days
1988	26 days
1989	31 days
1990	27 days
1991	18 days
1992	34 days
1993	30 days
1994	25 days
1995	36 days
1996	37 days
1997	25 days
1998	26 days
1999	44 days
2000	42 days
2001	20 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.

Download the Data

Data for Calkini (Smn) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Calkini (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 2026-10-14 (14 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).