San Juan de Guadalupe (Smn) Weather Records (MXN00010067)

Record envelope, standing records and threshold days for San Juan de Guadalupe (Smn) (MXN00010067), Mexico, with 52 years of record.

Key Facts for San Juan de Guadalupe (Smn)

San Juan de Guadalupe (Smn) (MXN00010067) is a weather station in Mexico at 24.62 latitude and -102.75 longitude, 1,520 m (4,986 ft) above sea level.
The station reports from 1922 to 1973, 52 years of record.
1,464 records set at San Juan de Guadalupe (Smn) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
San Juan de Guadalupe (Smn) set a daily record precipitation of 15.0 mm (0.6 in) on 14 May 1973.

About the Station

Location: Mexico, 24.62 latitude, -102.75 longitude.
Elevation: 1,520 m (4,986 ft).
Period of record: 1922 to 1973, 52 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 de Guadalupe (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 de Guadalupe (Smn), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.7 C (98.1 F)	-5.0 C (23.0 F)	n/a	n/a
Feb	35.0 C (95.0 F)	-1.1 C (30.0 F)	n/a	n/a
Mar	40.0 C (104.0 F)	0.0 C (32.0 F)	n/a	n/a
Apr	41.7 C (107.1 F)	0.6 C (33.1 F)	n/a	n/a
May	43.9 C (111.0 F)	5.6 C (42.1 F)	n/a	n/a
Jun	48.9 C (120.0 F)	10.0 C (50.0 F)	n/a	n/a
Jul	47.8 C (118.0 F)	10.0 C (50.0 F)	n/a	n/a
Aug	43.9 C (111.0 F)	10.0 C (50.0 F)	n/a	n/a
Sep	45.0 C (113.0 F)	6.7 C (44.1 F)	n/a	n/a
Oct	40.0 C (104.0 F)	3.9 C (39.0 F)	n/a	n/a
Nov	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-2.2 C (28.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juan de Guadalupe (Smn) still stand. 1966 holds the most, with 219.

Standing records at San Juan de Guadalupe (Smn) by the year they were set
Year set	Standing records
1922	89
1923	183
1924	193
1925	89
1926	63
1927	45
1928	44
1929	51
1930	55
1931	40
1932	27
1933	23
1934	26
1935	20
1936	17
1965	24
1966	219
1967	70
1968	29
1969	34
1970	57
1971	37
1972	13
1973	16

Wettest Day of Each Month

May: 99.8 mm (3.9 in)

The wettest day on record for each calendar month at San Juan de Guadalupe (Smn). The most was 99.8 mm (3.9 in) on 17 May 1923.

Record daily precipitation for each month at San Juan de Guadalupe (Smn)
Month	Record daily precipitation (mm)	Date
Jan	69.9 mm (2.8 in)	20 January 1961
Feb	22.9 mm (0.9 in)	22 February 1953
Mar	19.8 mm (0.8 in)	26 March 1923
Apr	16.3 mm (0.6 in)	13 April 1959
May	99.8 mm (3.9 in)	17 May 1923
Jun	67.8 mm (2.7 in)	23 June 1971
Jul	54.9 mm (2.2 in)	12 July 1934
Aug	37.8 mm (1.5 in)	20 August 1965
Sep	47.5 mm (1.9 in)	4 September 1953
Oct	54.9 mm (2.2 in)	1 October 1934
Nov	33.8 mm (1.3 in)	17 November 1923
Dec	29.5 mm (1.2 in)	2 December 1965

Period of Record Coverage

1922 to 1973

24 years of record at San Juan de Guadalupe (Smn), 1922 to 1973. 11 years have data for under 90 percent of days and are left out of rankings: 1922, 1923, 1927, 1965, 1966, 1967, 1968, 1969 and others.

Days with data per year at San Juan de Guadalupe (Smn)
Year	Days with data	Share of year	Complete
1922	103	28%	No
1923	326	89%	No
1924	364	99%	Yes
1925	365	100%	Yes
1926	334	92%	Yes
1927	272	75%	No
1928	365	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	361	99%	Yes
1936	366	100%	Yes
1965	54	15%	No
1966	318	87%	No
1967	275	75%	No
1968	205	56%	No
1969	302	83%	No
1970	301	82%	No
1971	363	99%	Yes
1972	273	75%	No
1973	121	33%	No

Latest Records

Latest records at San Juan de Guadalupe (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
14 May 1973	San Juan de Guadalupe (Smn), MX	daily rain	15.0 mm (0.6 in)	7.1 mm (0.28 in)	46 years	20 of 100 (Routine)
24 November 1972	San Juan de Guadalupe (Smn), MX	daily rain	19.8 mm (0.8 in)	13.4 mm (0.5 in)	27 years	20 of 100 (Routine)
23 July 1972	San Juan de Guadalupe (Smn), MX	daily rain	15.0 mm (0.6 in)	3.1 mm (0.12 in)	41 years	20 of 100 (Routine)
8 June 1972	San Juan de Guadalupe (Smn), MX	daily rain	32.8 mm (1.3 in)	19.8 mm (0.8 in)	41 years	37 of 100 (Notable)
7 June 1972	San Juan de Guadalupe (Smn), MX	daily rain	57.9 mm (2.3 in)	57.9 mm (2.3 in)	48 years	59 of 100 (Notable)
29 May 1972	San Juan de Guadalupe (Smn), MX	daily rain	15.0 mm (0.6 in)	9.2 mm (0.36 in)	17 years	18 of 100 (Routine)
28 May 1972	San Juan de Guadalupe (Smn), MX	daily rain	18.8 mm (0.7 in)	17.5 mm (0.7 in)	22 years	20 of 100 (Routine)
23 May 1972	San Juan de Guadalupe (Smn), MX	daily rain	13.0 mm (0.5 in)	0.6 mm (0.02 in)	8 years	7 of 100 (Routine)
11 March 1972	San Juan de Guadalupe (Smn), MX	daily rain	2.8 mm (0.11 in)	2.8 mm (0.11 in)	49 years	20 of 100 (Routine)
11 October 1971	San Juan de Guadalupe (Smn), MX	daily rain	22.9 mm (0.9 in)	12.0 mm (0.5 in)	44 years	20 of 100 (Routine)
8 October 1971	San Juan de Guadalupe (Smn), MX	daily rain	8.9 mm (0.35 in)	1.0 mm (0.04 in)	20 years	12 of 100 (Routine)
20 September 1971	San Juan de Guadalupe (Smn), MX	daily rain	27.9 mm (1.1 in)	13.9 mm (0.5 in)	36 years	31 of 100 (Routine)
18 August 1971	San Juan de Guadalupe (Smn), MX	daily rain	32.8 mm (1.3 in)	4.4 mm (0.17 in)	26 years	19 of 100 (Routine)
12 August 1971	San Juan de Guadalupe (Smn), MX	daily rain	20.8 mm (0.8 in)	3.0 mm (0.12 in)	42 years	20 of 100 (Routine)
2 August 1971	San Juan de Guadalupe (Smn), MX	daily rain	21.8 mm (0.9 in)	6.1 mm (0.24 in)	16 years	18 of 100 (Routine)
25 June 1971	San Juan de Guadalupe (Smn), MX	daily rain (Tie)	15.0 mm (0.6 in)	tie	28 years	3 of 100 (Routine)
24 June 1971	San Juan de Guadalupe (Smn), MX	daily rain	30.0 mm (1.2 in)	14.5 mm (0.6 in)	4 years	23 of 100 (Routine)
23 June 1971	San Juan de Guadalupe (Smn), MX	monthly rain	67.8 mm (2.7 in)	22.8 mm (0.9 in)	35 years	52 of 100 (Notable)
12 June 1971	San Juan de Guadalupe (Smn), MX	daily rain	13.0 mm (0.5 in)	3.1 mm (0.12 in)	21 years	14 of 100 (Routine)
27 May 1971	San Juan de Guadalupe (Smn), MX	daily rain	9.9 mm (0.39 in)	4.1 mm (0.16 in)	21 years	14 of 100 (Routine)

Climate Trend

12 complete years, 1924 to 1971

One stripe for each of 12 complete years at San Juan de Guadalupe (Smn), 1924 to 1971. Blue stripes are years cooler than the station's own mean of 21.5 C (70.8 F); red stripes are warmer. The coolest year was 1935, at 20.4 C (68.8 F), and the warmest was 1924, at 23.9 C (75.0 F). The strongest colour marks a difference of 2.4 C (4.3 F).

Annual mean temperature at San Juan de Guadalupe (Smn) as warming stripes, 1924 to 1971
Year	Annual mean temperature	Difference from the station mean
1924	23.9 C	+2.37 C
1925	22.5 C	+0.99 C
1928	22.1 C	+0.61 C
1929	22.0 C	+0.45 C
1930	21.7 C	+0.16 C
1931	21.0 C	-0.58 C
1932	21.0 C	-0.49 C
1933	21.2 C	-0.33 C
1934	21.0 C	-0.51 C
1935	20.4 C	-1.11 C
1936	20.6 C	-0.92 C
1971	20.9 C	-0.62 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

1922 to 1973

Yearly extremes at San Juan de Guadalupe (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.9 C (120.0 F)	1924	38.3 C (101.0 F)	24
Coldest night (TNn)	-5.0 C (23.0 F)	1967	1.7 C (35.1 F)	24
Wettest day (Rx1day)	99.8 mm (3.9 in)	1923	24.4 mm (1.0 in)	46
Wettest five days (Rx5day)	136.3 mm (5.4 in)	1961	46.0 mm (1.8 in)	46
Longest dry spell (CDD)	183 days	1929	81 days	46

Hottest day (TXx)

The hottest day of the year at San Juan de Guadalupe (Smn), 1922 to 1973. The record is 48.9 C (120.0 F) in 1924, marked on the chart; the median year is 38.3 C (101.0 F).

Hottest day (TXx) at San Juan de Guadalupe (Smn) by year
Year	Hottest day (TXx)
1922	45.0 C (113.0 F)
1923	42.8 C (109.0 F)
1924	48.9 C (120.0 F)
1925	45.0 C (113.0 F)
1926	40.0 C (104.0 F)
1927	35.6 C (96.1 F)
1928	37.8 C (100.0 F)
1929	38.9 C (102.0 F)
1930	35.6 C (96.1 F)
1931	35.0 C (95.0 F)
1932	35.0 C (95.0 F)
1933	30.6 C (87.1 F)
1934	30.6 C (87.1 F)
1935	30.6 C (87.1 F)
1936	30.6 C (87.1 F)
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1948	n/a
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	n/a
1963	n/a
1964	n/a
1965	25.6 C (78.1 F)
1966	35.6 C (96.1 F)
1967	38.9 C (102.0 F)
1968	38.9 C (102.0 F)
1969	40.6 C (105.1 F)
1970	38.9 C (102.0 F)
1971	38.9 C (102.0 F)
1972	38.9 C (102.0 F)
1973	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at San Juan de Guadalupe (Smn), 1922 to 1973. The record is -5.0 C (23.0 F) in 1967, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at San Juan de Guadalupe (Smn) by year
Year	Coldest night (TNn)
1922	10.6 C (51.1 F)
1923	1.7 C (35.1 F)
1924	0.6 C (33.1 F)
1925	0.6 C (33.1 F)
1926	1.7 C (35.1 F)
1927	2.8 C (37.0 F)
1928	2.8 C (37.0 F)
1929	2.8 C (37.0 F)
1930	7.8 C (46.0 F)
1931	2.8 C (37.0 F)
1932	2.8 C (37.0 F)
1933	5.0 C (41.0 F)
1934	3.9 C (39.0 F)
1935	3.9 C (39.0 F)
1936	3.9 C (39.0 F)
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1948	n/a
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	n/a
1963	n/a
1964	n/a
1965	-2.2 C (28.0 F)
1966	-2.2 C (28.0 F)
1967	-5.0 C (23.0 F)
1968	0.0 C (32.0 F)
1969	0.6 C (33.1 F)
1970	0.0 C (32.0 F)
1971	0.0 C (32.0 F)
1972	0.0 C (32.0 F)
1973	0.6 C (33.1 F)

Wettest day (Rx1day)

The wettest day of the year at San Juan de Guadalupe (Smn), 1922 to 1973. The record is 99.8 mm (3.9 in) in 1923, marked on the chart; the median year is 24.4 mm (1.0 in).

Wettest day (Rx1day) at San Juan de Guadalupe (Smn) by year
Year	Wettest day (Rx1day)
1922	1.3 mm (0.05 in)
1923	99.8 mm (3.9 in)
1924	9.9 mm (0.39 in)
1925	15.0 mm (0.6 in)
1926	15.0 mm (0.6 in)
1927	24.9 mm (1.0 in)
1928	21.8 mm (0.9 in)
1929	10.9 mm (0.4 in)
1930	23.9 mm (0.9 in)
1931	34.8 mm (1.4 in)
1932	17.8 mm (0.7 in)
1933	20.8 mm (0.8 in)
1934	54.9 mm (2.2 in)
1935	46.0 mm (1.8 in)
1936	22.9 mm (0.9 in)
1942	25.9 mm (1.0 in)
1943	26.4 mm (1.0 in)
1944	28.4 mm (1.1 in)
1945	15.7 mm (0.6 in)
1946	27.4 mm (1.1 in)
1948	33.3 mm (1.3 in)
1949	21.8 mm (0.9 in)
1950	20.3 mm (0.8 in)
1951	21.3 mm (0.8 in)
1952	33.3 mm (1.3 in)
1953	47.5 mm (1.9 in)
1954	20.3 mm (0.8 in)
1955	40.4 mm (1.6 in)
1956	24.9 mm (1.0 in)
1957	21.8 mm (0.9 in)
1958	47.5 mm (1.9 in)
1959	38.9 mm (1.5 in)
1960	19.8 mm (0.8 in)
1961	69.9 mm (2.8 in)
1962	15.5 mm (0.6 in)
1963	24.9 mm (1.0 in)
1964	21.8 mm (0.9 in)
1965	37.8 mm (1.5 in)
1966	18.8 mm (0.7 in)
1967	33.8 mm (1.3 in)
1968	43.4 mm (1.7 in)
1969	15.7 mm (0.6 in)
1970	19.8 mm (0.8 in)
1971	67.8 mm (2.7 in)
1972	57.9 mm (2.3 in)
1973	15.0 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juan de Guadalupe (Smn), 1922 to 1973. The record is 136.3 mm (5.4 in) in 1961, marked on the chart; the median year is 46.0 mm (1.8 in).

Wettest five days (Rx5day) at San Juan de Guadalupe (Smn) by year
Year	Wettest five days (Rx5day)
1922	1.3 mm (0.05 in)
1923	115.4 mm (4.5 in)
1924	23.4 mm (0.9 in)
1925	38.7 mm (1.5 in)
1926	34.5 mm (1.4 in)
1927	50.5 mm (2.0 in)
1928	47.4 mm (1.9 in)
1929	18.5 mm (0.7 in)
1930	72.4 mm (2.9 in)
1931	35.5 mm (1.4 in)
1932	51.5 mm (2.0 in)
1933	43.1 mm (1.7 in)
1934	131.7 mm (5.2 in)
1935	120.4 mm (4.7 in)
1936	56.6 mm (2.2 in)
1942	57.5 mm (2.3 in)
1943	70.3 mm (2.8 in)
1944	52.3 mm (2.1 in)
1945	23.6 mm (0.9 in)
1946	27.4 mm (1.1 in)
1948	73.3 mm (2.9 in)
1949	33.6 mm (1.3 in)
1950	26.4 mm (1.0 in)
1951	55.7 mm (2.2 in)
1952	33.3 mm (1.3 in)
1953	63.2 mm (2.5 in)
1954	23.5 mm (0.9 in)
1955	44.5 mm (1.8 in)
1956	49.3 mm (1.9 in)
1957	33.2 mm (1.3 in)
1958	65.3 mm (2.6 in)
1959	49.0 mm (1.9 in)
1960	42.4 mm (1.7 in)
1961	136.3 mm (5.4 in)
1962	15.5 mm (0.6 in)
1963	36.6 mm (1.4 in)
1964	31.7 mm (1.2 in)
1965	74.5 mm (2.9 in)
1966	50.0 mm (2.0 in)
1967	39.0 mm (1.5 in)
1968	112.5 mm (4.4 in)
1969	21.9 mm (0.9 in)
1970	26.9 mm (1.1 in)
1971	114.1 mm (4.5 in)
1972	92.5 mm (3.6 in)
1973	30.5 mm (1.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juan de Guadalupe (Smn), 1922 to 1973. The record is 183 days in 1929, marked on the chart; the median year is 81 days.

Longest dry spell (CDD) at San Juan de Guadalupe (Smn) by year
Year	Longest dry spell (CDD)
1922	61 days
1923	51 days
1924	103 days
1925	77 days
1926	90 days
1927	85 days
1928	60 days
1929	183 days
1930	141 days
1931	63 days
1932	183 days
1933	97 days
1934	71 days
1935	111 days
1936	75 days
1942	86 days
1943	81 days
1944	52 days
1945	96 days
1946	52 days
1948	64 days
1949	70 days
1950	92 days
1951	77 days
1952	106 days
1953	91 days
1954	71 days
1955	62 days
1956	135 days
1957	93 days
1958	67 days
1959	47 days
1960	98 days
1961	44 days
1962	81 days
1963	126 days
1964	109 days
1965	73 days
1966	69 days
1967	102 days
1968	36 days
1969	171 days
1970	92 days
1971	131 days
1972	43 days
1973	74 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

38 years, 1923 to 1971

A day with at least 25.1 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 111.9 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juan de Guadalupe (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	25.1 mm (1.0 in)
5 years	38.9 mm (1.5 in)
10 years	50.9 mm (2.0 in)
25 years	70.5 mm (2.8 in)
50 years	89.1 mm (3.5 in)	Longer than the 38 years of record
100 years	111.9 mm (4.4 in)	Longer than the 38 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, 38 years of values from 1923 to 1971.

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: 99.8 mm (3.9 in) in 1923; 69.9 mm (2.8 in) in 1961; 67.8 mm (2.7 in) in 1971.

Download the Data

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