San Juan Evangelista (Smn) Weather Records (MXN00030221)

Record envelope, standing records and threshold days for San Juan Evangelista (Smn) (MXN00030221), Mexico, with 34 years of record.

Key Facts for San Juan Evangelista (Smn)

San Juan Evangelista (Smn) (MXN00030221) is a weather station in Mexico at 17.88 latitude and -95.15 longitude, 18 m (59 ft) above sea level.
The station reports from 1949 to 1982, 34 years of record.
1,464 records set at San Juan Evangelista (Smn) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
San Juan Evangelista (Smn) set a daily record precipitation of 11.9 mm (0.5 in) on 8 January 1982.

About the Station

Location: Mexico, 17.88 latitude, -95.15 longitude.
Elevation: 18 m (59 ft).
Period of record: 1949 to 1982, 34 years.
Eligible elements: 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 San Juan Evangelista (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 San Juan Evangelista (Smn), 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)	10.0 C (50.0 F)	n/a	n/a
Feb	31.7 C (89.1 F)	10.6 C (51.1 F)	n/a	n/a
Mar	35.0 C (95.0 F)	11.7 C (53.1 F)	n/a	n/a
Apr	35.6 C (96.1 F)	15.0 C (59.0 F)	n/a	n/a
May	38.9 C (102.0 F)	15.0 C (59.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	15.0 C (59.0 F)	n/a	n/a
Jul	32.8 C (91.0 F)	13.9 C (57.0 F)	n/a	n/a
Aug	35.0 C (95.0 F)	18.9 C (66.0 F)	n/a	n/a
Sep	32.8 C (91.0 F)	16.7 C (62.1 F)	n/a	n/a
Oct	30.6 C (87.1 F)	11.7 C (53.1 F)	n/a	n/a
Nov	30.6 C (87.1 F)	10.6 C (51.1 F)	n/a	n/a
Dec	30.0 C (86.0 F)	10.0 C (50.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juan Evangelista (Smn) still stand. 1973 holds the most, with 273.

Wettest Day of Each Month

Sep: 255.3 mm (10.1 in)

The wettest day on record for each calendar month at San Juan Evangelista (Smn). The most was 255.3 mm (10.1 in) on 20 September 1974.

Record daily precipitation for each month at San Juan Evangelista (Smn)
Month	Record daily precipitation (mm)	Date
Jan	30.0 mm (1.2 in)	6 January 1950
Feb	118.4 mm (4.7 in)	26 February 1957
Mar	41.9 mm (1.6 in)	1 March 1959
Apr	61.0 mm (2.4 in)	27 April 1953
May	70.9 mm (2.8 in)	4 May 1957
Jun	124.0 mm (4.9 in)	20 June 1961
Jul	131.8 mm (5.2 in)	3 July 1965
Aug	88.9 mm (3.5 in)	12 August 1957
Sep	255.3 mm (10.1 in)	20 September 1974
Oct	99.8 mm (3.9 in)	8 October 1951
Nov	59.9 mm (2.4 in)	17 November 1955
Dec	125.0 mm (4.9 in)	24 December 1957

Period of Record Coverage

1962 to 1982

12 years of record at San Juan Evangelista (Smn), 1962 to 1982. 6 years have data for under 90 percent of days and are left out of rankings: 1962, 1972, 1974, 1977, 1981, 1982.

Days with data per year at San Juan Evangelista (Smn)
Year	Days with data	Share of year	Complete
1962	57	16%	No
1972	151	41%	No
1973	358	98%	Yes
1974	301	82%	No
1975	331	91%	Yes
1976	359	98%	Yes
1977	301	82%	No
1978	360	99%	Yes
1979	363	99%	Yes
1980	360	98%	Yes
1981	328	90%	No
1982	87	24%	No

Latest Records

Latest records at San Juan Evangelista (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 January 1982	San Juan Evangelista (Smn), MX	daily rain	11.9 mm (0.5 in)	7.6 mm (0.30 in)	30 years	20 of 100 (Routine)
19 August 1981	San Juan Evangelista (Smn), MX	daily rain	59.9 mm (2.4 in)	20.0 mm (0.8 in)	16 years	20 of 100 (Routine)
26 July 1981	San Juan Evangelista (Smn), MX	daily rain	47.8 mm (1.9 in)	13.0 mm (0.5 in)	8 years	11 of 100 (Routine)
13 July 1981	San Juan Evangelista (Smn), MX	daily rain	89.4 mm (3.5 in)	39.1 mm (1.5 in)	23 years	29 of 100 (Routine)
7 July 1981	San Juan Evangelista (Smn), MX	daily rain	41.4 mm (1.6 in)	9.6 mm (0.38 in)	16 years	12 of 100 (Routine)
1 July 1981	San Juan Evangelista (Smn), MX	daily rain	48.3 mm (1.9 in)	5.4 mm (0.21 in)	18 years	10 of 100 (Routine)
14 June 1981	San Juan Evangelista (Smn), MX	daily rain	36.3 mm (1.4 in)	7.3 mm (0.29 in)	20 years	13 of 100 (Routine)
6 May 1981	San Juan Evangelista (Smn), MX	daily rain	2.8 mm (0.11 in)	2.8 mm (0.11 in)	32 years	13 of 100 (Routine)
25 April 1981	San Juan Evangelista (Smn), MX	daily rain	18.3 mm (0.7 in)	3.3 mm (0.13 in)	28 years	13 of 100 (Routine)
18 March 1981	San Juan Evangelista (Smn), MX	daily rain	2.8 mm (0.11 in)	2.8 mm (0.11 in)	32 years	14 of 100 (Routine)
13 February 1981	San Juan Evangelista (Smn), MX	daily rain	22.9 mm (0.9 in)	18.1 mm (0.7 in)	31 years	20 of 100 (Routine)
23 January 1981	San Juan Evangelista (Smn), MX	daily rain	4.3 mm (0.17 in)	4.3 mm (0.17 in)	32 years	18 of 100 (Routine)
16 January 1981	San Juan Evangelista (Smn), MX	daily rain	11.9 mm (0.5 in)	1.0 mm (0.04 in)	31 years	13 of 100 (Routine)
12 January 1981	San Juan Evangelista (Smn), MX	daily rain	11.9 mm (0.5 in)	9.1 mm (0.36 in)	16 years	20 of 100 (Routine)
4 December 1980	San Juan Evangelista (Smn), MX	daily rain	25.9 mm (1.0 in)	25.9 mm (1.0 in)	31 years	29 of 100 (Routine)
3 December 1980	San Juan Evangelista (Smn), MX	daily rain	13.0 mm (0.5 in)	4.1 mm (0.16 in)	13 years	8 of 100 (Routine)
4 November 1980	San Juan Evangelista (Smn), MX	daily rain	20.8 mm (0.8 in)	5.8 mm (0.23 in)	19 years	12 of 100 (Routine)
26 September 1980	San Juan Evangelista (Smn), MX	daily rain	24.9 mm (1.0 in)	5.1 mm (0.20 in)	11 years	8 of 100 (Routine)
24 September 1980	San Juan Evangelista (Smn), MX	daily rain	135.4 mm (5.3 in)	52.6 mm (2.1 in)	28 years	33 of 100 (Routine)
23 September 1980	San Juan Evangelista (Smn), MX	daily rain	94.5 mm (3.7 in)	53.1 mm (2.1 in)	2 years	26 of 100 (Routine)

Extremes by Year

1949 to 1982

Yearly extremes at San Juan Evangelista (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1978	35.0 C (95.0 F)	12
Coldest night (TNn)	10.0 C (50.0 F)	1972	10.6 C (51.1 F)	12
Wettest day (Rx1day)	255.3 mm (10.1 in)	1974	78.0 mm (3.1 in)	34
Wettest five days (Rx5day)	339.4 mm (13.4 in)	1974	147.7 mm (5.8 in)	34
Longest dry spell (CDD)	100 days	1977	52 days	34

Hottest day (TXx)

The hottest day of the year at San Juan Evangelista (Smn), 1949 to 1982. The record is 38.9 C (102.0 F) in 1978, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at San Juan Evangelista (Smn) by year
Year	Hottest day (TXx)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	30.0 C (86.0 F)
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	30.0 C (86.0 F)
1973	35.0 C (95.0 F)
1974	35.0 C (95.0 F)
1975	35.6 C (96.1 F)
1976	33.9 C (93.0 F)
1977	35.6 C (96.1 F)
1978	38.9 C (102.0 F)
1979	35.0 C (95.0 F)
1980	35.6 C (96.1 F)
1981	35.6 C (96.1 F)
1982	31.7 C (89.1 F)

Coldest night (TNn)

The coldest night of the year at San Juan Evangelista (Smn), 1949 to 1982. The record is 10.0 C (50.0 F) in 1972, marked on the chart; the median year is 10.6 C (51.1 F).

Coldest night (TNn) at San Juan Evangelista (Smn) by year
Year	Coldest night (TNn)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	13.9 C (57.0 F)
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	10.0 C (50.0 F)
1973	10.6 C (51.1 F)
1974	10.6 C (51.1 F)
1975	12.8 C (55.0 F)
1976	10.0 C (50.0 F)
1977	10.6 C (51.1 F)
1978	10.6 C (51.1 F)
1979	10.6 C (51.1 F)
1980	10.6 C (51.1 F)
1981	10.6 C (51.1 F)
1982	11.7 C (53.1 F)

Wettest day (Rx1day)

The wettest day of the year at San Juan Evangelista (Smn), 1949 to 1982. The record is 255.3 mm (10.1 in) in 1974, marked on the chart; the median year is 78.0 mm (3.1 in).

Wettest day (Rx1day) at San Juan Evangelista (Smn) by year
Year	Wettest day (Rx1day)
1949	46.5 mm (1.8 in)
1950	97.8 mm (3.9 in)
1951	99.8 mm (3.9 in)
1952	82.8 mm (3.3 in)
1953	69.9 mm (2.8 in)
1954	63.0 mm (2.5 in)
1955	166.9 mm (6.6 in)
1956	86.9 mm (3.4 in)
1957	125.0 mm (4.9 in)
1958	90.2 mm (3.6 in)
1959	66.8 mm (2.6 in)
1960	70.4 mm (2.8 in)
1961	124.0 mm (4.9 in)
1962	54.9 mm (2.2 in)
1963	117.9 mm (4.6 in)
1964	71.9 mm (2.8 in)
1965	131.8 mm (5.2 in)
1966	108.0 mm (4.3 in)
1967	43.9 mm (1.7 in)
1968	78.0 mm (3.1 in)
1969	78.0 mm (3.1 in)
1970	85.9 mm (3.4 in)
1971	63.8 mm (2.5 in)
1972	45.0 mm (1.8 in)
1973	72.9 mm (2.9 in)
1974	255.3 mm (10.1 in)
1975	43.7 mm (1.7 in)
1976	87.6 mm (3.4 in)
1977	56.4 mm (2.2 in)
1978	68.3 mm (2.7 in)
1979	57.7 mm (2.3 in)
1980	135.4 mm (5.3 in)
1981	89.4 mm (3.5 in)
1982	11.9 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juan Evangelista (Smn), 1949 to 1982. The record is 339.4 mm (13.4 in) in 1974, marked on the chart; the median year is 147.7 mm (5.8 in).

Wettest five days (Rx5day) at San Juan Evangelista (Smn) by year
Year	Wettest five days (Rx5day)
1949	108.5 mm (4.3 in)
1950	112.5 mm (4.4 in)
1951	272.7 mm (10.7 in)
1952	217.5 mm (8.6 in)
1953	123.4 mm (4.9 in)
1954	111.3 mm (4.4 in)
1955	211.4 mm (8.3 in)
1956	141.1 mm (5.6 in)
1957	186.3 mm (7.3 in)
1958	186.5 mm (7.3 in)
1959	132.6 mm (5.2 in)
1960	145.3 mm (5.7 in)
1961	155.7 mm (6.1 in)
1962	101.9 mm (4.0 in)
1963	196.4 mm (7.7 in)
1964	133.7 mm (5.3 in)
1965	203.9 mm (8.0 in)
1966	199.2 mm (7.8 in)
1967	94.5 mm (3.7 in)
1968	146.3 mm (5.8 in)
1969	207.2 mm (8.2 in)
1970	149.4 mm (5.9 in)
1971	156.2 mm (6.1 in)
1972	102.4 mm (4.0 in)
1973	133.1 mm (5.2 in)
1974	339.4 mm (13.4 in)
1975	103.6 mm (4.1 in)
1976	149.0 mm (5.9 in)
1977	145.1 mm (5.7 in)
1978	241.0 mm (9.5 in)
1979	116.9 mm (4.6 in)
1980	273.6 mm (10.8 in)
1981	164.0 mm (6.5 in)
1982	17.2 mm (0.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juan Evangelista (Smn), 1949 to 1982. The record is 100 days in 1977, marked on the chart; the median year is 52 days.

Longest dry spell (CDD) at San Juan Evangelista (Smn) by year
Year	Longest dry spell (CDD)
1949	64 days
1950	28 days
1951	66 days
1952	38 days
1953	42 days
1954	33 days
1955	51 days
1956	40 days
1957	31 days
1958	52 days
1959	62 days
1960	86 days
1961	23 days
1962	92 days
1963	46 days
1964	40 days
1965	54 days
1966	46 days
1967	71 days
1968	91 days
1969	61 days
1970	61 days
1971	37 days
1972	52 days
1973	73 days
1974	49 days
1975	64 days
1976	38 days
1977	100 days
1978	33 days
1979	27 days
1980	70 days
1981	28 days
1982	82 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

33 years, 1949 to 1981

A day with at least 78.1 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 253.6 mm (10.0 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juan Evangelista (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	78.1 mm (3.1 in)
5 years	111.2 mm (4.4 in)
10 years	137.8 mm (5.4 in)
25 years	177.9 mm (7.0 in)
50 years	213.1 mm (8.4 in)	Longer than the 33 years of record
100 years	253.6 mm (10.0 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 1949 to 1981.

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: 255.3 mm (10.1 in) in 1974; 166.9 mm (6.6 in) in 1955; 135.4 mm (5.3 in) in 1980.

Download the Data

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