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Ayutla Weather Records (MXN00020007)

Record envelope, standing records and threshold days for Ayutla (MXN00020007), Mexico, with 50 years of record.

Key Facts for Ayutla

  • Ayutla (MXN00020007) is a weather station in Mexico at 17.02 latitude and -96.08 longitude, 2,056 m (6,745 ft) above sea level.
  • The station reports from 1961 to 2010, 50 years of record.
  • 1,464 records set at Ayutla still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Ayutla set a daily record low minimum temperature of 0.6 C (33.1 F) on 29 December 2010.

About the Station

  • Location: Mexico, 17.02 latitude, -96.08 longitude.
  • Elevation: 2,056 m (6,745 ft).
  • Period of record: 1961 to 2010, 50 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 Ayutla, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ayutla. 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 Ayutla. 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 Ayutla, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.0 C (86.0 F)0.0 C (32.0 F)n/an/a
Feb35.0 C (95.0 F)-1.1 C (30.0 F)n/an/a
Mar33.9 C (93.0 F)-3.3 C (26.1 F)n/an/a
Apr35.0 C (95.0 F)0.0 C (32.0 F)n/an/a
May35.6 C (96.1 F)2.8 C (37.0 F)n/an/a
Jun31.7 C (89.1 F)5.0 C (41.0 F)n/an/a
Jul27.8 C (82.0 F)5.0 C (41.0 F)n/an/a
Aug28.9 C (84.0 F)0.0 C (32.0 F)n/an/a
Sep28.9 C (84.0 F)5.0 C (41.0 F)n/an/a
Oct30.6 C (87.1 F)1.7 C (35.1 F)n/an/a
Nov28.9 C (84.0 F)-2.2 C (28.0 F)n/an/a
Dec27.8 C (82.0 F)-2.2 C (28.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ayutla by the year they were set 1,464 records at Ayutla still stand. 1974 holds the most, with 212. 01002003001961: 181962: 361963: 211964: 701965: 211966: 231967: 231968: 111969: 671970: 301971: 221972: 121973: 371974: 2121976: 151977: 81978: 321979: 141980: 41981: 131982: 101983: 71984: 501985: 71991: 61992: 91993: 151995: 71996: 261997: 142000: 352002: 332003: 412004: 472005: 682006: 1062007: 1472008: 142009: 362010: 971961196519691973197819821991199620032007
1,464 records at Ayutla still stand. 1974 holds the most, with 212.
Standing records at Ayutla by the year they were set
Year setStanding records
196118
196236
196321
196470
196521
196623
196723
196811
196967
197030
197122
197212
197337
1974212
197615
19778
197832
197914
19804
198113
198210
19837
198450
19857
19916
19929
199315
19957
199626
199714
200035
200233
200341
200447
200568
2006106
2007147
200814
200936
201097

All-Time Record Progression

5 new records
When Ayutla set new all-time records 5 all-time records were set at Ayutla between 1 April 2003 and 3 March 2009. Each dot is a new record. Record low maximum temperatureRecord low minimum temperatureRecord daily precipitation1 April 2003: Record low maximum temperature 3.9 C (39.0 F)30 November 2003: Record low minimum temperature -2.2 C (28.0 F)4 October 2005: Record daily precipitation 158.0 mm (6.2 in)7 January 2006: Record low maximum temperature 1.7 C (35.1 F)3 March 2009: Record low minimum temperature -3.3 C (26.1 F)20052010
5 all-time records were set at Ayutla between 1 April 2003 and 3 March 2009. Each dot is a new record.
When Ayutla set new all-time records
DateKindDetail
2003-04-01Record low maximum temperatureRecord low maximum temperature 3.9 C (39.0 F)
2003-11-30Record low minimum temperatureRecord low minimum temperature -2.2 C (28.0 F)
2005-10-04Record daily precipitationRecord daily precipitation 158.0 mm (6.2 in)
2006-01-07Record low maximum temperatureRecord low maximum temperature 1.7 C (35.1 F)
2009-03-03Record low minimum temperatureRecord low minimum temperature -3.3 C (26.1 F)

Wettest Day of Each Month

Oct: 158.0 mm (6.2 in)
Record daily precipitation for each month at Ayutla The wettest day on record for each calendar month at Ayutla. The most was 158.0 mm (6.2 in) on 4 October 2005. 050100150200 Jan: 21.8 mm (0.9 in), 31 January 1992 Jan Feb: 24.6 mm (1.0 in), 6 February 1967 Feb Mar: 42.9 mm (1.7 in), 20 March 1979 Mar Apr: 75.7 mm (3.0 in), 1 April 1991 Apr May: 86.6 mm (3.4 in), 27 May 1966 May Jun: 84.6 mm (3.3 in), 19 June 1968 Jun Jul: 116.3 mm (4.6 in), 26 July 1966 Jul Aug: 84.8 mm (3.3 in), 19 August 1961 Aug Sep: 130.3 mm (5.1 in), 21 September 1974 Sep Oct: 158.0 mm (6.2 in), 4 October 2005 Oct Nov: 61.7 mm (2.4 in), 1 November 1961 Nov Dec: 41.1 mm (1.6 in), 22 December 1967 Dec
The wettest day on record for each calendar month at Ayutla. The most was 158.0 mm (6.2 in) on 4 October 2005.
Record daily precipitation for each month at Ayutla
MonthRecord daily precipitation (mm)Date
Jan21.8 mm (0.9 in)31 January 1992
Feb24.6 mm (1.0 in)6 February 1967
Mar42.9 mm (1.7 in)20 March 1979
Apr75.7 mm (3.0 in)1 April 1991
May86.6 mm (3.4 in)27 May 1966
Jun84.6 mm (3.3 in)19 June 1968
Jul116.3 mm (4.6 in)26 July 1966
Aug84.8 mm (3.3 in)19 August 1961
Sep130.3 mm (5.1 in)21 September 1974
Oct158.0 mm (6.2 in)4 October 2005
Nov61.7 mm (2.4 in)1 November 1961
Dec41.1 mm (1.6 in)22 December 1967

Period of Record Coverage

1961 to 2010
Days with data per year at Ayutla 40 years of record at Ayutla, 1961 to 2010. 6 years have data for under 90 percent of days and are left out of rankings: 1971, 1972, 1977, 1985, 2003, 2005. 1961: 358 of 365 days1962: 362 of 365 days1963: 361 of 365 days1964: 364 of 366 days1965: 359 of 365 days1966: 362 of 365 days1967: 364 of 365 days1968: 364 of 366 days1969: 362 of 365 days1970: 365 of 365 days1971: 270 of 365 days1972: 212 of 366 days1973: 331 of 365 days1974: 365 of 365 days1976: 334 of 366 days1977: 30 of 365 days1978: 363 of 365 days1979: 363 of 365 days1980: 330 of 366 days1981: 362 of 365 days1982: 363 of 365 days1983: 365 of 365 days1984: 362 of 366 days1985: 28 of 365 days1991: 363 of 365 days1992: 339 of 366 days1993: 363 of 365 days1995: 363 of 365 days1996: 359 of 366 days1997: 362 of 365 days2000: 354 of 366 days2002: 333 of 365 days2003: 328 of 365 days2004: 357 of 366 days2005: 328 of 365 days2006: 359 of 365 days2007: 355 of 365 days2008: 354 of 366 days2009: 354 of 365 days2010: 349 of 365 days19651970198019851995200020052010
40 years of record at Ayutla, 1961 to 2010. 6 years have data for under 90 percent of days and are left out of rankings: 1971, 1972, 1977, 1985, 2003, 2005.
Days with data per year at Ayutla
YearDays with dataShare of yearComplete
196135898%Yes
196236299%Yes
196336199%Yes
196436499%Yes
196535998%Yes
196636299%Yes
1967364100%Yes
196836499%Yes
196936299%Yes
1970365100%Yes
197127074%No
197221258%No
197333191%Yes
1974365100%Yes
197633491%Yes
1977308%No
197836399%Yes
197936399%Yes
198033090%Yes
198136299%Yes
198236399%Yes
1983365100%Yes
198436299%Yes
1985288%No
199136399%Yes
199233993%Yes
199336399%Yes
199536399%Yes
199635998%Yes
199736299%Yes
200035497%Yes
200233391%Yes
200332890%No
200435798%Yes
200532890%No
200635998%Yes
200735597%Yes
200835497%Yes
200935497%Yes
201034996%Yes

Latest Records

20
Latest records at Ayutla
DateStationRecordValueBeat old record byOld record stoodSignificance
29 December 2010Ayutla, MXdaily low min0.6 C (33.1 F)3.3 C (5.9 F)12 years18 of 100 (Routine)
28 December 2010Ayutla, MXdaily low min-1.1 C (30.0 F)3.9 C (7.0 F)29 years25 of 100 (Routine)
28 December 2010Ayutla, MXdaily low max7.8 C (46.0 F)1.1 C (2.0 F)4 years7 of 100 (Routine)
27 December 2010Ayutla, MXdaily low max3.9 C (39.0 F)2.8 C (5.0 F)5 years11 of 100 (Routine)
27 December 2010Ayutla, MXdaily low min (Tie)0.0 C (32.0 F)tie4 years1 of 100 (Routine)
26 December 2010Ayutla, MXdaily low min0.6 C (33.1 F)2.2 C (4.0 F)16 years17 of 100 (Routine)
26 December 2010Ayutla, MXdaily low max (Tie)3.9 C (39.0 F)tie4 years1 of 100 (Routine)
25 December 2010Ayutla, MXdaily low min0.0 C (32.0 F)2.8 C (5.0 F)47 years27 of 100 (Routine)
24 December 2010Ayutla, MXdaily low min0.0 C (32.0 F)2.8 C (5.0 F)4 years14 of 100 (Routine)
24 December 2010Ayutla, MXdaily low max (Tie)5.6 C (42.1 F)tie4 years1 of 100 (Routine)
23 December 2010Ayutla, MXdaily low min0.0 C (32.0 F)1.7 C (3.1 F)4 years11 of 100 (Routine)
23 December 2010Ayutla, MXall-time low max (Tie)1.7 C (35.1 F)tie4 years6 of 100 (Routine)
22 December 2010Ayutla, MXmonthly low max2.8 C (37.0 F)1.1 C (2.0 F)5 years17 of 100 (Routine)
22 December 2010Ayutla, MXdaily low min0.6 C (33.1 F)2.2 C (4.0 F)0 years12 of 100 (Routine)
21 December 2010Ayutla, MXmonthly low max (Tie)3.9 C (39.0 F)tie5 years4 of 100 (Routine)
21 December 2010Ayutla, MXdaily low min (Tie)1.7 C (35.1 F)tie1 year1 of 100 (Routine)
20 December 2010Ayutla, MXdaily low max5.0 C (41.0 F)1.7 C (3.1 F)1 year8 of 100 (Routine)
19 December 2010Ayutla, MXdaily low max5.0 C (41.0 F)1.7 C (3.1 F)4 years9 of 100 (Routine)
17 December 2010Ayutla, MXdaily low min (Tie)5.0 C (41.0 F)tie36 years4 of 100 (Routine)
17 December 2010Ayutla, MXdaily low max (Tie)5.6 C (42.1 F)tie12 years2 of 100 (Routine)

Climate Trend

29 complete years, 1961 to 2010
Annual mean temperature at Ayutla as warming stripes, 1961 to 2010 One stripe for each of 29 complete years at Ayutla, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 14.0 C (57.1 F); red stripes are warmer. The coolest year was 2007, at 7.8 C (46.1 F), and the warmest was 1974, at 19.1 C (66.3 F). The strongest colour marks a difference of 6.2 C (11.2 F). 1961: 16.9 C, +2.9 C from the station mean1962: 16.5 C, +2.5 C from the station mean1963: 16.7 C, +2.7 C from the station mean1964: 17.3 C, +3.4 C from the station mean1965: 16.9 C, +3.0 C from the station mean1966: 16.3 C, +2.4 C from the station mean1967: 16.7 C, +2.7 C from the station mean1968: 16.4 C, +2.5 C from the station mean1969: 17.8 C, +3.9 C from the station mean1970: 17.4 C, +3.4 C from the station mean1974: 19.1 C, +5.1 C from the station mean1978: 17.3 C, +3.3 C from the station mean1979: 16.9 C, +2.9 C from the station mean1981: 15.2 C, +1.3 C from the station mean1982: 15.1 C, +1.2 C from the station mean1983: 15.4 C, +1.5 C from the station mean1984: 15.9 C, +2.0 C from the station mean1991: 13.0 C, -1.0 C from the station mean1993: 12.2 C, -1.8 C from the station mean1995: 12.4 C, -1.5 C from the station mean1996: 11.6 C, -2.4 C from the station mean1997: 11.5 C, -2.4 C from the station mean2004: 9.0 C, -5.0 C from the station mean2005: 8.5 C, -5.4 C from the station mean2006: 8.1 C, -5.8 C from the station mean2007: 7.8 C, -6.1 C from the station mean2008: 9.8 C, -4.2 C from the station mean2009: 8.7 C, -5.2 C from the station mean2010: 8.3 C, -5.6 C from the station mean19611965197019751980198519901995200020052010
One stripe for each of 29 complete years at Ayutla, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 14.0 C (57.1 F); red stripes are warmer. The coolest year was 2007, at 7.8 C (46.1 F), and the warmest was 1974, at 19.1 C (66.3 F). The strongest colour marks a difference of 6.2 C (11.2 F).
Annual mean temperature at Ayutla as warming stripes, 1961 to 2010
YearAnnual mean temperatureDifference from the station mean
196116.9 C+2.90 C
196216.5 C+2.52 C
196316.7 C+2.72 C
196417.3 C+3.38 C
196516.9 C+2.98 C
196616.3 C+2.37 C
196716.7 C+2.73 C
196816.4 C+2.45 C
196917.8 C+3.88 C
197017.4 C+3.41 C
197419.1 C+5.09 C
197817.3 C+3.31 C
197916.9 C+2.92 C
198115.2 C+1.25 C
198215.1 C+1.16 C
198315.4 C+1.46 C
198415.9 C+1.98 C
199113.0 C-0.98 C
199312.2 C-1.80 C
199512.4 C-1.55 C
199611.6 C-2.37 C
199711.5 C-2.42 C
20049.0 C-4.99 C
20058.5 C-5.44 C
20068.1 C-5.85 C
20077.8 C-6.14 C
20089.8 C-4.16 C
20098.7 C-5.23 C
20108.3 C-5.62 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

1961 to 2010
Yearly extremes at Ayutla: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.6 C (96.1 F)196430.0 C (86.0 F)40
Coldest night (TNn)-3.3 C (26.1 F)20091.2 C (34.1 F)40
Wettest day (Rx1day)158.0 mm (6.2 in)200564.3 mm (2.5 in)40
Wettest five days (Rx5day)265.5 mm (10.5 in)1974159.4 mm (6.3 in)40
Longest dry spell (CDD)62 days197432 days40

Hottest day (TXx)

Hottest day (TXx) at Ayutla by year The hottest day of the year at Ayutla, 1961 to 2010. The record is 35.6 C (96.1 F) in 1964, marked on the chart; the median year is 30.0 C (86.0 F). 15202530354019701980199020002010Record: 35.6 C (96.1 F) in 1964
The hottest day of the year at Ayutla, 1961 to 2010. The record is 35.6 C (96.1 F) in 1964, marked on the chart; the median year is 30.0 C (86.0 F).
Hottest day (TXx) at Ayutla by year
YearHottest day (TXx)
196130.6 C (87.1 F)
196230.6 C (87.1 F)
196330.6 C (87.1 F)
196435.6 C (96.1 F)
196531.7 C (89.1 F)
196630.6 C (87.1 F)
196732.8 C (91.0 F)
196832.8 C (91.0 F)
196935.6 C (96.1 F)
197032.8 C (91.0 F)
197132.8 C (91.0 F)
197230.6 C (87.1 F)
197333.9 C (93.0 F)
197430.0 C (86.0 F)
197628.3 C (82.9 F)
197728.9 C (84.0 F)
197833.9 C (93.0 F)
197930.0 C (86.0 F)
198030.0 C (86.0 F)
198133.9 C (93.0 F)
198230.0 C (86.0 F)
198331.7 C (89.1 F)
198433.3 C (91.9 F)
198530.0 C (86.0 F)
199128.9 C (84.0 F)
199228.9 C (84.0 F)
199328.9 C (84.0 F)
199525.6 C (78.1 F)
199635.0 C (95.0 F)
199727.8 C (82.0 F)
200025.0 C (77.0 F)
200223.9 C (75.0 F)
200320.0 C (68.0 F)
200416.7 C (62.1 F)
200515.6 C (60.1 F)
200616.7 C (62.1 F)
200717.8 C (64.0 F)
200830.0 C (86.0 F)
200920.0 C (68.0 F)
201021.7 C (71.1 F)

Coldest night (TNn)

Coldest night (TNn) at Ayutla by year The coldest night of the year at Ayutla, 1961 to 2010. The record is -3.3 C (26.1 F) in 2009, marked on the chart; the median year is 1.2 C (34.1 F). -5-2.502.557.519701980199020002010Record: -3.3 C (26.1 F) in 2009
The coldest night of the year at Ayutla, 1961 to 2010. The record is -3.3 C (26.1 F) in 2009, marked on the chart; the median year is 1.2 C (34.1 F).
Coldest night (TNn) at Ayutla by year
YearColdest night (TNn)
19611.7 C (35.1 F)
19623.3 C (37.9 F)
19630.0 C (32.0 F)
19645.0 C (41.0 F)
19652.8 C (37.0 F)
19660.6 C (33.1 F)
19670.0 C (32.0 F)
19680.0 C (32.0 F)
19693.9 C (39.0 F)
19702.8 C (37.0 F)
19711.7 C (35.1 F)
19726.7 C (44.1 F)
19731.7 C (35.1 F)
19743.9 C (39.0 F)
19761.7 C (35.1 F)
19773.9 C (39.0 F)
19785.0 C (41.0 F)
19791.7 C (35.1 F)
19802.8 C (37.0 F)
19811.7 C (35.1 F)
19820.6 C (33.1 F)
19832.2 C (36.0 F)
19840.6 C (33.1 F)
19850.0 C (32.0 F)
19910.6 C (33.1 F)
19921.7 C (35.1 F)
19930.0 C (32.0 F)
19951.7 C (35.1 F)
19960.0 C (32.0 F)
19970.6 C (33.1 F)
20000.0 C (32.0 F)
20020.0 C (32.0 F)
2003-2.2 C (28.0 F)
20040.6 C (33.1 F)
20050.0 C (32.0 F)
2006-1.1 C (30.0 F)
20070.0 C (32.0 F)
20081.7 C (35.1 F)
2009-3.3 C (26.1 F)
2010-2.2 C (28.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ayutla by year The wettest day of the year at Ayutla, 1961 to 2010. The record is 158.0 mm (6.2 in) in 2005, marked on the chart; the median year is 64.3 mm (2.5 in). 05010015020019701980199020002010Record: 158.0 mm (6.2 in) in 2005
The wettest day of the year at Ayutla, 1961 to 2010. The record is 158.0 mm (6.2 in) in 2005, marked on the chart; the median year is 64.3 mm (2.5 in).
Wettest day (Rx1day) at Ayutla by year
YearWettest day (Rx1day)
196184.8 mm (3.3 in)
196267.1 mm (2.6 in)
196367.1 mm (2.6 in)
196445.0 mm (1.8 in)
196554.1 mm (2.1 in)
1966116.3 mm (4.6 in)
196750.8 mm (2.0 in)
196884.6 mm (3.3 in)
196977.0 mm (3.0 in)
197075.4 mm (3.0 in)
197163.8 mm (2.5 in)
197268.1 mm (2.7 in)
197359.9 mm (2.4 in)
1974130.3 mm (5.1 in)
197660.5 mm (2.4 in)
19771.8 mm (0.07 in)
197870.6 mm (2.8 in)
197960.5 mm (2.4 in)
198059.9 mm (2.4 in)
198182.3 mm (3.2 in)
198265.0 mm (2.6 in)
198373.2 mm (2.9 in)
198483.8 mm (3.3 in)
19852.3 mm (0.09 in)
199175.7 mm (3.0 in)
199263.0 mm (2.5 in)
199358.9 mm (2.3 in)
199562.5 mm (2.5 in)
199684.1 mm (3.3 in)
199760.5 mm (2.4 in)
200064.8 mm (2.6 in)
200270.9 mm (2.8 in)
200357.9 mm (2.3 in)
200457.9 mm (2.3 in)
2005158.0 mm (6.2 in)
200660.5 mm (2.4 in)
200737.8 mm (1.5 in)
200855.1 mm (2.2 in)
200950.8 mm (2.0 in)
2010123.4 mm (4.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ayutla by year The wettest five days of the year at Ayutla, 1961 to 2010. The record is 265.5 mm (10.5 in) in 1974, marked on the chart; the median year is 159.4 mm (6.3 in). 010020030019701980199020002010Record: 265.5 mm (10.5 in) in 1974
The wettest five days of the year at Ayutla, 1961 to 2010. The record is 265.5 mm (10.5 in) in 1974, marked on the chart; the median year is 159.4 mm (6.3 in).
Wettest five days (Rx5day) at Ayutla by year
YearWettest five days (Rx5day)
1961152.9 mm (6.0 in)
1962118.6 mm (4.7 in)
1963187.8 mm (7.4 in)
1964121.2 mm (4.8 in)
1965144.8 mm (5.7 in)
1966194.6 mm (7.7 in)
196792.3 mm (3.6 in)
1968154.8 mm (6.1 in)
1969223.8 mm (8.8 in)
1970169.2 mm (6.7 in)
1971139.7 mm (5.5 in)
1972205.0 mm (8.1 in)
197391.2 mm (3.6 in)
1974265.5 mm (10.5 in)
1976156.0 mm (6.1 in)
19776.9 mm (0.27 in)
1978177.8 mm (7.0 in)
1979162.4 mm (6.4 in)
1980165.4 mm (6.5 in)
1981166.6 mm (6.6 in)
1982125.5 mm (4.9 in)
1983229.8 mm (9.0 in)
1984169.7 mm (6.7 in)
19852.3 mm (0.09 in)
1991165.1 mm (6.5 in)
1992109.5 mm (4.3 in)
1993164.5 mm (6.5 in)
1995156.4 mm (6.2 in)
1996178.7 mm (7.0 in)
1997112.5 mm (4.4 in)
2000162.6 mm (6.4 in)
2002121.9 mm (4.8 in)
2003132.2 mm (5.2 in)
2004170.8 mm (6.7 in)
2005189.5 mm (7.5 in)
2006127.9 mm (5.0 in)
200766.3 mm (2.6 in)
2008183.8 mm (7.2 in)
2009100.9 mm (4.0 in)
2010243.3 mm (9.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ayutla by year The longest dry spell of the year at Ayutla, 1961 to 2010. The record is 62 days in 1974, marked on the chart; the median year is 32 days. 02040608019701980199020002010Record: 62 days in 1974
The longest dry spell of the year at Ayutla, 1961 to 2010. The record is 62 days in 1974, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Ayutla by year
YearLongest dry spell (CDD)
196124 days
196232 days
196322 days
196435 days
196534 days
196613 days
196726 days
196816 days
196929 days
197037 days
197160 days
197226 days
197349 days
197462 days
197618 days
197715 days
197850 days
197926 days
198032 days
198126 days
198230 days
198343 days
198428 days
198510 days
199157 days
199240 days
199326 days
199530 days
199635 days
199721 days
200056 days
200234 days
200361 days
200440 days
200526 days
200631 days
200724 days
200853 days
200946 days
201053 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

36 years, 1961 to 2010

A day with at least 65.6 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 175.0 mm (6.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Ayutla: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years65.6 mm (2.6 in)
5 years84.5 mm (3.3 in)
10 years100.3 mm (3.9 in)
25 years125.2 mm (4.9 in)
50 years148.0 mm (5.8 in)Longer than the 36 years of record
100 years175.0 mm (6.9 in)Longer than the 36 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, 36 years of values from 1961 to 2010.

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: 158.0 mm (6.2 in) in 2005; 130.3 mm (5.1 in) in 1974; 123.4 mm (4.9 in) in 2010.

Download the Data

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