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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

San Pedro Ixcatan Weather Records (MXN00018033)

Record envelope, standing records and threshold days for San Pedro Ixcatan (MXN00018033), Mexico, with 37 years of record.

Key Facts for San Pedro Ixcatan

  • San Pedro Ixcatan (MXN00018033) is a weather station in Mexico at 22.05 latitude and -104.92 longitude, 1,305 m (4,281 ft) above sea level.
  • The station reports from 1942 to 1978, 37 years of record.
  • 0 records set at San Pedro Ixcatan still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • San Pedro Ixcatan set a daily record precipitation of 99.8 mm (3.9 in) on 17 September 1978.

About the Station

  • Location: Mexico, 22.05 latitude, -104.92 longitude.
  • Elevation: 1,305 m (4,281 ft).
  • Period of record: 1942 to 1978, 37 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at San Pedro Ixcatan, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Pedro Ixcatan. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at San Pedro Ixcatan. 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 Pedro Ixcatan, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at San Pedro Ixcatan by the year they were set 0 records at San Pedro Ixcatan still stand. 00000000000
0 records at San Pedro Ixcatan still stand.
Standing records at San Pedro Ixcatan by the year they were set
Year setStanding records

Wettest Day of Each Month

Jul: 248.9 mm (9.8 in)
Record daily precipitation for each month at San Pedro Ixcatan The wettest day on record for each calendar month at San Pedro Ixcatan. The most was 248.9 mm (9.8 in) on 24 July 1970. 0100200300 Jan: 59.9 mm (2.4 in), 8 January 1967 Jan Feb: 39.9 mm (1.6 in), 9 February 1966 Feb Mar: 45.0 mm (1.8 in), 17 March 1944 Mar Apr: 63.8 mm (2.5 in), 13 April 1959 Apr May: 84.8 mm (3.3 in), 18 May 1948 May Jun: 166.9 mm (6.6 in), 23 June 1973 Jun Jul: 248.9 mm (9.8 in), 24 July 1970 Jul Aug: 199.9 mm (7.9 in), 29 August 1974 Aug Sep: 184.9 mm (7.3 in), 11 September 1973 Sep Oct: 93.0 mm (3.7 in), 18 October 1963 Oct Nov: 63.0 mm (2.5 in), 10 November 1948 Nov Dec: 81.8 mm (3.2 in), 28 December 1969 Dec
The wettest day on record for each calendar month at San Pedro Ixcatan. The most was 248.9 mm (9.8 in) on 24 July 1970.
Record daily precipitation for each month at San Pedro Ixcatan
MonthRecord daily precipitation (mm)Date
Jan59.9 mm (2.4 in)8 January 1967
Feb39.9 mm (1.6 in)9 February 1966
Mar45.0 mm (1.8 in)17 March 1944
Apr63.8 mm (2.5 in)13 April 1959
May84.8 mm (3.3 in)18 May 1948
Jun166.9 mm (6.6 in)23 June 1973
Jul248.9 mm (9.8 in)24 July 1970
Aug199.9 mm (7.9 in)29 August 1974
Sep184.9 mm (7.3 in)11 September 1973
Oct93.0 mm (3.7 in)18 October 1963
Nov63.0 mm (2.5 in)10 November 1948
Dec81.8 mm (3.2 in)28 December 1969

Latest Records

12
Latest records at San Pedro Ixcatan
DateStationRecordValueBeat old record byOld record stoodSignificance
17 September 1978San Pedro Ixcatan, MXdaily rain99.8 mm (3.9 in)31.0 mm (1.2 in)7 years16 of 100 (Routine)
19 August 1978San Pedro Ixcatan, MXdaily rain53.3 mm (2.1 in)4.0 mm (0.16 in)15 years8 of 100 (Routine)
12 July 1978San Pedro Ixcatan, MXdaily rain122.9 mm (4.8 in)2.0 mm (0.08 in)24 years10 of 100 (Routine)
24 October 1975San Pedro Ixcatan, MXdaily rain64.8 mm (2.6 in)35.3 mm (1.4 in)8 years23 of 100 (Routine)
12 October 1975San Pedro Ixcatan, MXdaily rain34.8 mm (1.4 in)10.9 mm (0.4 in)8 years10 of 100 (Routine)
5 October 1975San Pedro Ixcatan, MXdaily rain43.9 mm (1.7 in)6.1 mm (0.24 in)25 years13 of 100 (Routine)
30 August 1975San Pedro Ixcatan, MXdaily rain56.4 mm (2.2 in)1.0 mm (0.04 in)6 years5 of 100 (Routine)
7 August 1975San Pedro Ixcatan, MXdaily rain71.4 mm (2.8 in)7.1 mm (0.28 in)20 years11 of 100 (Routine)
26 July 1975San Pedro Ixcatan, MXdaily rain72.9 mm (2.9 in)22.1 mm (0.9 in)22 years17 of 100 (Routine)
13 July 1975San Pedro Ixcatan, MXdaily rain73.4 mm (2.9 in)12.4 mm (0.5 in)5 years8 of 100 (Routine)
29 June 1975San Pedro Ixcatan, MXdaily rain68.3 mm (2.7 in)3.5 mm (0.14 in)16 years8 of 100 (Routine)
4 June 1975San Pedro Ixcatan, MXdaily rain17.8 mm (0.7 in)2.1 mm (0.08 in)16 years8 of 100 (Routine)

Extremes by Year

1942 to 1978
Yearly extremes at San Pedro Ixcatan: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)248.9 mm (9.8 in)1970116.1 mm (4.6 in)34
Wettest five days (Rx5day)486.2 mm (19.1 in)1970219.1 mm (8.6 in)34
Longest dry spell (CDD)163 days195498 days34

Wettest day (Rx1day)

Wettest day (Rx1day) at San Pedro Ixcatan by year The wettest day of the year at San Pedro Ixcatan, 1942 to 1978. The record is 248.9 mm (9.8 in) in 1970, marked on the chart; the median year is 116.1 mm (4.6 in). 0100200300195019601970Record: 248.9 mm (9.8 in) in 1970
The wettest day of the year at San Pedro Ixcatan, 1942 to 1978. The record is 248.9 mm (9.8 in) in 1970, marked on the chart; the median year is 116.1 mm (4.6 in).
Wettest day (Rx1day) at San Pedro Ixcatan by year
YearWettest day (Rx1day)
194285.9 mm (3.4 in)
1943104.4 mm (4.1 in)
194479.8 mm (3.1 in)
19479.1 mm (0.36 in)
1948127.8 mm (5.0 in)
1949113.8 mm (4.5 in)
1950122.9 mm (4.8 in)
1951100.8 mm (4.0 in)
1952105.9 mm (4.2 in)
1953120.9 mm (4.8 in)
1954131.8 mm (5.2 in)
1955119.9 mm (4.7 in)
195663.0 mm (2.5 in)
195784.8 mm (3.3 in)
1958116.8 mm (4.6 in)
195990.9 mm (3.6 in)
1960100.8 mm (4.0 in)
1961141.5 mm (5.6 in)
1962167.9 mm (6.6 in)
1963168.9 mm (6.6 in)
1964166.9 mm (6.6 in)
1965183.4 mm (7.2 in)
1966174.0 mm (6.9 in)
1967127.8 mm (5.0 in)
196879.0 mm (3.1 in)
196983.8 mm (3.3 in)
1970248.9 mm (9.8 in)
1971115.3 mm (4.5 in)
197297.3 mm (3.8 in)
1973184.9 mm (7.3 in)
1974199.9 mm (7.9 in)
197582.3 mm (3.2 in)
19760.0 mm (0.00 in)
1978122.9 mm (4.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Pedro Ixcatan by year The wettest five days of the year at San Pedro Ixcatan, 1942 to 1978. The record is 486.2 mm (19.1 in) in 1970, marked on the chart; the median year is 219.1 mm (8.6 in). 0200400600195019601970Record: 486.2 mm (19.1 in) in 1970
The wettest five days of the year at San Pedro Ixcatan, 1942 to 1978. The record is 486.2 mm (19.1 in) in 1970, marked on the chart; the median year is 219.1 mm (8.6 in).
Wettest five days (Rx5day) at San Pedro Ixcatan by year
YearWettest five days (Rx5day)
1942244.1 mm (9.6 in)
1943142.5 mm (5.6 in)
1944332.1 mm (13.1 in)
194714.5 mm (0.6 in)
1948170.9 mm (6.7 in)
1949201.4 mm (7.9 in)
1950267.4 mm (10.5 in)
1951210.3 mm (8.3 in)
1952202.2 mm (8.0 in)
1953213.7 mm (8.4 in)
1954301.5 mm (11.9 in)
1955199.2 mm (7.8 in)
1956215.2 mm (8.5 in)
1957128.2 mm (5.0 in)
1958221.3 mm (8.7 in)
1959216.9 mm (8.5 in)
1960236.3 mm (9.3 in)
1961240.5 mm (9.5 in)
1962253.6 mm (10.0 in)
1963285.5 mm (11.2 in)
1964210.9 mm (8.3 in)
1965351.9 mm (13.9 in)
1966336.6 mm (13.3 in)
1967222.6 mm (8.8 in)
1968142.3 mm (5.6 in)
1969183.7 mm (7.2 in)
1970486.2 mm (19.1 in)
1971225.4 mm (8.9 in)
1972185.0 mm (7.3 in)
1973300.2 mm (11.8 in)
1974296.7 mm (11.7 in)
1975291.1 mm (11.5 in)
19760.0 mm (0.00 in)
1978191.8 mm (7.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Pedro Ixcatan by year The longest dry spell of the year at San Pedro Ixcatan, 1942 to 1978. The record is 163 days in 1954, marked on the chart; the median year is 98 days. 050100150200195019601970Record: 163 days in 1954
The longest dry spell of the year at San Pedro Ixcatan, 1942 to 1978. The record is 163 days in 1954, marked on the chart; the median year is 98 days.
Longest dry spell (CDD) at San Pedro Ixcatan by year
YearLongest dry spell (CDD)
194258 days
1943146 days
194452 days
194748 days
194856 days
1949131 days
1950158 days
195174 days
1952109 days
1953114 days
1954163 days
1955147 days
195676 days
195791 days
195872 days
195997 days
1960138 days
196170 days
1962134 days
196358 days
196437 days
196562 days
196670 days
196791 days
196898 days
1969105 days
197098 days
1971158 days
1972148 days
1973121 days
1974146 days
1975135 days
1976152 days
19789 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

30 years, 1942 to 1975

A day with at least 118.5 mm (4.7 in) of rain is expected about once in 2 years. A day with at least 276.5 mm (10.9 in) of rain is expected about once in 100 years.

Rainfall return levels at San Pedro Ixcatan: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years118.5 mm (4.7 in)
5 years157.1 mm (6.2 in)
10 years184.1 mm (7.2 in)
25 years219.9 mm (8.7 in)
50 years247.8 mm (9.8 in)Longer than the 30 years of record
100 years276.5 mm (10.9 in)Longer than the 30 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, 30 years of values from 1942 to 1975.

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: 248.9 mm (9.8 in) in 1970; 199.9 mm (7.9 in) in 1974; 184.9 mm (7.3 in) in 1973.

Download the Data

  • Data for San Pedro Ixcatan standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for San Pedro Ixcatan 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 . Last revised (2025-12-31).