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Built 2026-10-19 (19 October 2026)

Ixtlahuaca (Smn) Weather Records (MXN00015036)

Record envelope, standing records and threshold days for Ixtlahuaca (Smn) (MXN00015036), Mexico, with 81 years of record.

Key Facts for Ixtlahuaca (Smn)

  • Ixtlahuaca (Smn) (MXN00015036) is a weather station in Mexico at 19.55 latitude and -99.75 longitude, 2,535 m (8,316 ft) above sea level.
  • The station reports from 1923 to 2003, 81 years of record.
  • 1,464 records set at Ixtlahuaca (Smn) still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Ixtlahuaca (Smn) tied a daily record low minimum temperature of -4.4 C (24.1 F) on 23 December 2003.

About the Station

  • Location: Mexico, 19.55 latitude, -99.75 longitude.
  • Elevation: 2,535 m (8,316 ft).
  • Period of record: 1923 to 2003, 81 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Ixtlahuaca (Smn), with 2026 drawn through them The band shows the record high and record low for each calendar day at Ixtlahuaca (Smn). The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ixtlahuaca (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 Ixtlahuaca (Smn), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan28.9 C (84.0 F)-6.1 C (21.0 F)n/an/a
Feb28.9 C (84.0 F)-6.7 C (19.9 F)n/an/a
Mar30.0 C (86.0 F)-9.4 C (15.1 F)n/an/a
Apr32.8 C (91.0 F)-3.3 C (26.1 F)n/an/a
May35.0 C (95.0 F)0.0 C (32.0 F)n/an/a
Jun31.7 C (89.1 F)0.0 C (32.0 F)n/an/a
Jul28.9 C (84.0 F)0.0 C (32.0 F)n/an/a
Aug26.7 C (80.1 F)1.1 C (34.0 F)n/an/a
Sep28.9 C (84.0 F)0.6 C (33.1 F)n/an/a
Oct27.8 C (82.0 F)-4.4 C (24.1 F)n/an/a
Nov30.0 C (86.0 F)-6.1 C (21.0 F)n/an/a
Dec30.6 C (87.1 F)-8.3 C (17.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ixtlahuaca (Smn) by the year they were set 1,464 records at Ixtlahuaca (Smn) still stand. 1962 holds the most, with 124. 0501001501926: 231927: 491928: 741929: 1071949: 311950: 521961: 371962: 1241963: 1001964: 541965: 671966: 291967: 271968: 211969: 241970: 211971: 131972: 221973: 361974: 341975: 211976: 211977: 231978: 201979: 191980: 261981: 471982: 531983: 891989: 781991: 281992: 351995: 61997: 131998: 271999: 62001: 32002: 41926194919631967197119751979198319952001
1,464 records at Ixtlahuaca (Smn) still stand. 1962 holds the most, with 124.
Standing records at Ixtlahuaca (Smn) by the year they were set
Year setStanding records
192623
192749
192874
1929107
194931
195052
196137
1962124
1963100
196454
196567
196629
196727
196821
196924
197021
197113
197222
197336
197434
197521
197621
197723
197820
197919
198026
198147
198253
198389
198978
199128
199235
19956
199713
199827
19996
20013
20024

Wettest Day of Each Month

Jul: 56.9 mm (2.2 in)
Record daily precipitation for each month at Ixtlahuaca (Smn) The wettest day on record for each calendar month at Ixtlahuaca (Smn). The most was 56.9 mm (2.2 in) on 9 July 1969. 0204060 Jan: 31.0 mm (1.2 in), 25 January 1980 Jan Feb: 19.8 mm (0.8 in), 20 February 1925 Feb Mar: 36.1 mm (1.4 in), 25 March 1966 Mar Apr: 45.5 mm (1.8 in), 13 April 1962 Apr May: 34.3 mm (1.4 in), 23 May 1948 May Jun: 55.1 mm (2.2 in), 6 June 1981 Jun Jul: 56.9 mm (2.2 in), 9 July 1969 Jul Aug: 52.8 mm (2.1 in), 23 August 1962 Aug Sep: 52.6 mm (2.1 in), 21 September 1976 Sep Oct: 49.3 mm (1.9 in), 18 October 2002 Oct Nov: 30.0 mm (1.2 in), 16 November 1974 Nov Dec: 31.2 mm (1.2 in), 9 December 1978 Dec
The wettest day on record for each calendar month at Ixtlahuaca (Smn). The most was 56.9 mm (2.2 in) on 9 July 1969.
Record daily precipitation for each month at Ixtlahuaca (Smn)
MonthRecord daily precipitation (mm)Date
Jan31.0 mm (1.2 in)25 January 1980
Feb19.8 mm (0.8 in)20 February 1925
Mar36.1 mm (1.4 in)25 March 1966
Apr45.5 mm (1.8 in)13 April 1962
May34.3 mm (1.4 in)23 May 1948
Jun55.1 mm (2.2 in)6 June 1981
Jul56.9 mm (2.2 in)9 July 1969
Aug52.8 mm (2.1 in)23 August 1962
Sep52.6 mm (2.1 in)21 September 1976
Oct49.3 mm (1.9 in)18 October 2002
Nov30.0 mm (1.2 in)16 November 1974
Dec31.2 mm (1.2 in)9 December 1978

Period of Record Coverage

1926 to 2003
Days with data per year at Ixtlahuaca (Smn) 39 years of record at Ixtlahuaca (Smn), 1926 to 2003. 12 years have data for under 90 percent of days and are left out of rankings: 1926, 1929, 1949, 1969, 1980, 1992, 1995, 1997 and others. 1926: 162 of 365 days1927: 365 of 365 days1928: 366 of 366 days1929: 243 of 365 days1949: 152 of 365 days1950: 337 of 365 days1961: 364 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 364 of 365 days1966: 364 of 365 days1967: 365 of 365 days1968: 334 of 366 days1969: 324 of 365 days1970: 365 of 365 days1971: 334 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 335 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 334 of 365 days1980: 304 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1989: 361 of 365 days1991: 334 of 365 days1992: 316 of 366 days1995: 93 of 365 days1997: 181 of 365 days1998: 356 of 365 days1999: 51 of 365 days2001: 60 of 365 days2002: 62 of 365 days2003: 190 of 365 days195019651970197519801995
39 years of record at Ixtlahuaca (Smn), 1926 to 2003. 12 years have data for under 90 percent of days and are left out of rankings: 1926, 1929, 1949, 1969, 1980, 1992, 1995, 1997 and others.
Days with data per year at Ixtlahuaca (Smn)
YearDays with dataShare of yearComplete
192616244%No
1927365100%Yes
1928366100%Yes
192924367%No
194915242%No
195033792%Yes
1961364100%Yes
1962364100%Yes
1963365100%Yes
1964366100%Yes
1965364100%Yes
1966364100%Yes
1967365100%Yes
196833491%Yes
196932489%No
1970365100%Yes
197133492%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
197633592%Yes
1977365100%Yes
1978364100%Yes
197933492%Yes
198030483%No
1981365100%Yes
1982365100%Yes
1983365100%Yes
198936199%Yes
199133492%Yes
199231686%No
19959325%No
199718150%No
199835698%Yes
19995114%No
20016016%No
20026217%No
200319052%No

Latest Records

20
Latest records at Ixtlahuaca (Smn)
DateStationRecordValueBeat old record byOld record stoodSignificance
23 December 2003Ixtlahuaca (Smn), MXdaily low min (Tie)-4.4 C (24.1 F)tie52 years5 of 100 (Routine)
24 November 2003Ixtlahuaca (Smn), MXdaily rain13.0 mm (0.5 in)0.3 mm (0.01 in)26 years16 of 100 (Routine)
5 November 2003Ixtlahuaca (Smn), MXdaily high min (Tie)10.0 C (50.0 F)tie41 years4 of 100 (Routine)
16 October 2003Ixtlahuaca (Smn), MXdaily high min (Tie)10.0 C (50.0 F)tie40 years4 of 100 (Routine)
29 September 2003Ixtlahuaca (Smn), MXdaily low max (Tie)16.7 C (62.1 F)tie33 years4 of 100 (Routine)
7 September 2003Ixtlahuaca (Smn), MXdaily rain11.2 mm (0.4 in)1.3 mm (0.05 in)13 years13 of 100 (Routine)
1 September 2003Ixtlahuaca (Smn), MXdaily rain45.0 mm (1.8 in)3.1 mm (0.12 in)40 years24 of 100 (Routine)
29 July 2003Ixtlahuaca (Smn), MXdaily rain29.0 mm (1.1 in)9.2 mm (0.36 in)32 years29 of 100 (Routine)
10 April 2003Ixtlahuaca (Smn), MXdaily rain21.3 mm (0.8 in)10.6 mm (0.4 in)37 years20 of 100 (Routine)
30 March 2003Ixtlahuaca (Smn), MXdaily rain4.1 mm (0.16 in)0.3 mm (0.01 in)76 years20 of 100 (Routine)
7 November 2002Ixtlahuaca (Smn), MXdaily rain3.3 mm (0.13 in)2.0 mm (0.08 in)19 years16 of 100 (Routine)
18 October 2002Ixtlahuaca (Smn), MXmonthly rain49.3 mm (1.9 in)9.2 mm (0.36 in)21 years37 of 100 (Notable)
18 September 2002Ixtlahuaca (Smn), MXdaily rain25.7 mm (1.0 in)4.4 mm (0.17 in)4 years14 of 100 (Routine)
11 September 2002Ixtlahuaca (Smn), MXdaily rain30.2 mm (1.2 in)5.3 mm (0.21 in)20 years21 of 100 (Routine)
5 September 2002Ixtlahuaca (Smn), MXdaily rain24.4 mm (1.0 in)2.6 mm (0.10 in)11 years14 of 100 (Routine)
2 July 2002Ixtlahuaca (Smn), MXdaily rain17.5 mm (0.7 in)0.5 mm (0.02 in)7 years10 of 100 (Routine)
28 June 2002Ixtlahuaca (Smn), MXdaily rain19.8 mm (0.8 in)4.1 mm (0.16 in)33 years20 of 100 (Routine)
8 June 2002Ixtlahuaca (Smn), MXdaily rain47.8 mm (1.9 in)22.9 mm (0.9 in)75 years57 of 100 (Notable)
9 April 2002Ixtlahuaca (Smn), MXdaily rain10.2 mm (0.4 in)1.6 mm (0.06 in)25 years17 of 100 (Routine)
5 April 2002Ixtlahuaca (Smn), MXdaily rain5.3 mm (0.21 in)1.5 mm (0.06 in)76 years20 of 100 (Routine)

Climate Trend

21 complete years, 1927 to 1998
Annual mean temperature at Ixtlahuaca (Smn) as warming stripes, 1927 to 1998 One stripe for each of 21 complete years at Ixtlahuaca (Smn), 1927 to 1998. Blue stripes are years cooler than the station's own mean of 14.4 C (57.9 F); red stripes are warmer. The coolest year was 1989, at 12.6 C (54.7 F), and the warmest was 1983, at 16.3 C (61.3 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1927: 14.3 C, -0.2 C from the station mean1928: 13.5 C, -0.9 C from the station mean1961: 14.1 C, -0.4 C from the station mean1962: 15.3 C, +0.9 C from the station mean1963: 15.7 C, +1.3 C from the station mean1964: 14.9 C, +0.5 C from the station mean1965: 13.9 C, -0.6 C from the station mean1966: 14.2 C, -0.2 C from the station mean1967: 14.1 C, -0.3 C from the station mean1970: 13.9 C, -0.5 C from the station mean1972: 14.3 C, -0.1 C from the station mean1973: 14.3 C, -0.2 C from the station mean1974: 13.7 C, -0.8 C from the station mean1975: 14.0 C, -0.5 C from the station mean1977: 13.7 C, -0.7 C from the station mean1978: 14.1 C, -0.3 C from the station mean1981: 15.9 C, +1.5 C from the station mean1982: 16.1 C, +1.6 C from the station mean1983: 16.3 C, +1.9 C from the station mean1989: 12.6 C, -1.8 C from the station mean1998: 14.0 C, -0.4 C from the station mean1927194019501960197019801990
One stripe for each of 21 complete years at Ixtlahuaca (Smn), 1927 to 1998. Blue stripes are years cooler than the station's own mean of 14.4 C (57.9 F); red stripes are warmer. The coolest year was 1989, at 12.6 C (54.7 F), and the warmest was 1983, at 16.3 C (61.3 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Ixtlahuaca (Smn) as warming stripes, 1927 to 1998
YearAnnual mean temperatureDifference from the station mean
192714.3 C-0.16 C
192813.5 C-0.88 C
196114.1 C-0.36 C
196215.3 C+0.87 C
196315.7 C+1.31 C
196414.9 C+0.52 C
196513.9 C-0.56 C
196614.2 C-0.25 C
196714.1 C-0.32 C
197013.9 C-0.53 C
197214.3 C-0.08 C
197314.3 C-0.16 C
197413.7 C-0.76 C
197514.0 C-0.46 C
197713.7 C-0.71 C
197814.1 C-0.30 C
198115.9 C+1.47 C
198216.1 C+1.63 C
198316.3 C+1.88 C
198912.6 C-1.82 C
199814.0 C-0.42 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

1923 to 2003
Yearly extremes at Ixtlahuaca (Smn): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.0 C (95.0 F)198329.4 C (84.9 F)39
Coldest night (TNn)-9.4 C (15.1 F)1928-3.3 C (26.1 F)39
Wettest day (Rx1day)56.9 mm (2.2 in)196934.3 mm (1.4 in)45
Wettest five days (Rx5day)120.1 mm (4.7 in)194774.4 mm (2.9 in)45
Longest dry spell (CDD)111 days199843 days45

Hottest day (TXx)

Hottest day (TXx) at Ixtlahuaca (Smn) by year The hottest day of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 35.0 C (95.0 F) in 1983, marked on the chart; the median year is 29.4 C (84.9 F). 202530351940196019802000Record: 35.0 C (95.0 F) in 1983
The hottest day of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 35.0 C (95.0 F) in 1983, marked on the chart; the median year is 29.4 C (84.9 F).
Hottest day (TXx) at Ixtlahuaca (Smn) by year
YearHottest day (TXx)
1923n/a
1924n/a
1925n/a
192630.6 C (87.1 F)
192731.7 C (89.1 F)
192830.0 C (86.0 F)
192931.7 C (89.1 F)
1944n/a
1947n/a
1948n/a
194927.8 C (82.0 F)
195030.6 C (87.1 F)
196130.0 C (86.0 F)
196230.6 C (87.1 F)
196330.0 C (86.0 F)
196430.6 C (87.1 F)
196528.9 C (84.0 F)
196630.0 C (86.0 F)
196728.9 C (84.0 F)
196828.9 C (84.0 F)
196927.8 C (82.0 F)
197028.9 C (84.0 F)
197128.9 C (84.0 F)
197227.8 C (82.0 F)
197328.9 C (84.0 F)
197427.8 C (82.0 F)
197529.4 C (84.9 F)
197627.8 C (82.0 F)
197730.0 C (86.0 F)
197831.7 C (89.1 F)
197930.6 C (87.1 F)
198028.9 C (84.0 F)
198130.6 C (87.1 F)
198231.7 C (89.1 F)
198335.0 C (95.0 F)
198930.6 C (87.1 F)
199130.6 C (87.1 F)
199227.8 C (82.0 F)
199525.6 C (78.1 F)
199726.1 C (79.0 F)
199833.3 C (91.9 F)
199928.9 C (84.0 F)
200125.0 C (77.0 F)
200225.0 C (77.0 F)
200324.4 C (75.9 F)

Coldest night (TNn)

Coldest night (TNn) at Ixtlahuaca (Smn) by year The coldest night of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is -9.4 C (15.1 F) in 1928, marked on the chart; the median year is -3.3 C (26.1 F). -10-7.5-5-2.501940196019802000Record: -9.4 C (15.1 F) in 1928
The coldest night of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is -9.4 C (15.1 F) in 1928, marked on the chart; the median year is -3.3 C (26.1 F).
Coldest night (TNn) at Ixtlahuaca (Smn) by year
YearColdest night (TNn)
1923n/a
1924n/a
1925n/a
1926-5.0 C (23.0 F)
1927-5.0 C (23.0 F)
1928-9.4 C (15.1 F)
1929-5.0 C (23.0 F)
1944n/a
1947n/a
1948n/a
1949-5.0 C (23.0 F)
1950-7.2 C (19.0 F)
1961-4.4 C (24.1 F)
1962-1.1 C (30.0 F)
1963-6.1 C (21.0 F)
19640.0 C (32.0 F)
1965-5.0 C (23.0 F)
1966-4.4 C (24.1 F)
1967-3.3 C (26.1 F)
1968-3.3 C (26.1 F)
19690.0 C (32.0 F)
19700.0 C (32.0 F)
19710.0 C (32.0 F)
19720.0 C (32.0 F)
19730.0 C (32.0 F)
19740.0 C (32.0 F)
19750.0 C (32.0 F)
1976-0.6 C (30.9 F)
19770.0 C (32.0 F)
19780.0 C (32.0 F)
19790.0 C (32.0 F)
19800.0 C (32.0 F)
19810.0 C (32.0 F)
19820.0 C (32.0 F)
19830.0 C (32.0 F)
1989-8.3 C (17.1 F)
1991-6.1 C (21.0 F)
1992-4.4 C (24.1 F)
1995-2.2 C (28.0 F)
1997-6.1 C (21.0 F)
1998-6.7 C (19.9 F)
1999-5.0 C (23.0 F)
2001-2.2 C (28.0 F)
2002-5.0 C (23.0 F)
2003-4.4 C (24.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ixtlahuaca (Smn) by year The wettest day of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 56.9 mm (2.2 in) in 1969, marked on the chart; the median year is 34.3 mm (1.4 in). 02040601940196019802000Record: 56.9 mm (2.2 in) in 1969
The wettest day of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 56.9 mm (2.2 in) in 1969, marked on the chart; the median year is 34.3 mm (1.4 in).
Wettest day (Rx1day) at Ixtlahuaca (Smn) by year
YearWettest day (Rx1day)
19236.9 mm (0.27 in)
192422.1 mm (0.9 in)
192521.8 mm (0.9 in)
192623.9 mm (0.9 in)
192737.8 mm (1.5 in)
192839.9 mm (1.6 in)
192945.0 mm (1.8 in)
194431.2 mm (1.2 in)
194746.5 mm (1.8 in)
194836.1 mm (1.4 in)
194934.3 mm (1.4 in)
195034.3 mm (1.4 in)
196144.5 mm (1.8 in)
196252.8 mm (2.1 in)
196329.0 mm (1.1 in)
196431.5 mm (1.2 in)
196551.1 mm (2.0 in)
196636.1 mm (1.4 in)
196751.8 mm (2.0 in)
196840.4 mm (1.6 in)
196956.9 mm (2.2 in)
197033.8 mm (1.3 in)
197134.3 mm (1.4 in)
197240.1 mm (1.6 in)
197334.3 mm (1.4 in)
197430.0 mm (1.2 in)
197527.9 mm (1.1 in)
197652.6 mm (2.1 in)
197726.7 mm (1.1 in)
197832.8 mm (1.3 in)
197932.3 mm (1.3 in)
198040.1 mm (1.6 in)
198155.1 mm (2.2 in)
198230.5 mm (1.2 in)
198330.2 mm (1.2 in)
198940.9 mm (1.6 in)
199145.0 mm (1.8 in)
199225.9 mm (1.0 in)
199522.9 mm (0.9 in)
199737.3 mm (1.5 in)
199824.4 mm (1.0 in)
19990.0 mm (0.00 in)
200117.8 mm (0.7 in)
200249.3 mm (1.9 in)
200345.0 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ixtlahuaca (Smn) by year The wettest five days of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 120.1 mm (4.7 in) in 1947, marked on the chart; the median year is 74.4 mm (2.9 in). 0501001501940196019802000Record: 120.1 mm (4.7 in) in 1947
The wettest five days of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 120.1 mm (4.7 in) in 1947, marked on the chart; the median year is 74.4 mm (2.9 in).
Wettest five days (Rx5day) at Ixtlahuaca (Smn) by year
YearWettest five days (Rx5day)
192314.6 mm (0.6 in)
192480.2 mm (3.2 in)
192550.3 mm (2.0 in)
192674.4 mm (2.9 in)
192772.1 mm (2.8 in)
1928104.2 mm (4.1 in)
192976.5 mm (3.0 in)
194473.4 mm (2.9 in)
1947120.1 mm (4.7 in)
194874.2 mm (2.9 in)
194958.2 mm (2.3 in)
195065.6 mm (2.6 in)
196184.6 mm (3.3 in)
196284.1 mm (3.3 in)
196371.2 mm (2.8 in)
196454.4 mm (2.1 in)
1965100.8 mm (4.0 in)
196678.8 mm (3.1 in)
196789.9 mm (3.5 in)
196894.2 mm (3.7 in)
1969108.5 mm (4.3 in)
197091.4 mm (3.6 in)
197183.6 mm (3.3 in)
197260.4 mm (2.4 in)
197383.3 mm (3.3 in)
197466.4 mm (2.6 in)
197566.0 mm (2.6 in)
197693.4 mm (3.7 in)
197760.6 mm (2.4 in)
197873.3 mm (2.9 in)
197963.9 mm (2.5 in)
198091.7 mm (3.6 in)
198177.5 mm (3.1 in)
198253.4 mm (2.1 in)
198393.0 mm (3.7 in)
198984.6 mm (3.3 in)
1991110.4 mm (4.3 in)
199260.2 mm (2.4 in)
199554.7 mm (2.2 in)
199756.4 mm (2.2 in)
199866.7 mm (2.6 in)
19990.0 mm (0.00 in)
200117.8 mm (0.7 in)
200274.9 mm (2.9 in)
200391.0 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ixtlahuaca (Smn) by year The longest dry spell of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 111 days in 1998, marked on the chart; the median year is 43 days. 02550751001251940196019802000Record: 111 days in 1998
The longest dry spell of the year at Ixtlahuaca (Smn), 1923 to 2003. The record is 111 days in 1998, marked on the chart; the median year is 43 days.
Longest dry spell (CDD) at Ixtlahuaca (Smn) by year
YearLongest dry spell (CDD)
192346 days
192472 days
192529 days
192666 days
192749 days
192844 days
192999 days
194432 days
194716 days
194867 days
194977 days
195071 days
196146 days
196292 days
196363 days
196441 days
196534 days
196634 days
196728 days
196826 days
196977 days
197069 days
197175 days
197234 days
197330 days
197438 days
197563 days
197619 days
197732 days
197828 days
197940 days
198071 days
198142 days
198260 days
198370 days
198981 days
199140 days
199235 days
199512 days
199743 days
1998111 days
199959 days
200130 days
200229 days
200332 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, 1924 to 2002

A day with at least 36.3 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 67.2 mm (2.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Ixtlahuaca (Smn): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years36.3 mm (1.4 in)
5 years45.1 mm (1.8 in)
10 years50.7 mm (2.0 in)
25 years57.5 mm (2.3 in)
50 years62.5 mm (2.5 in)Longer than the 30 years of record
100 years67.2 mm (2.6 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 1924 to 2002.

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: 56.9 mm (2.2 in) in 1969; 55.1 mm (2.2 in) in 1981; 52.8 mm (2.1 in) in 1962.

Download the Data

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