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Ayutla Weather Records (MXN00022002)

Record envelope, standing records and threshold days for Ayutla (MXN00022002), Mexico, with 46 years of record.

Key Facts for Ayutla

  • Ayutla (MXN00022002) is a weather station in Mexico at 21.35 latitude and -99.58 longitude, 791 m (2,595 ft) above sea level.
  • The station reports from 1965 to 2010, 46 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 monthly record high maximum temperature of 45.6 C (114.1 F) on 24 January 2010.

About the Station

  • Location: Mexico, 21.35 latitude, -99.58 longitude.
  • Elevation: 791 m (2,595 ft).
  • Period of record: 1965 to 2010, 46 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. -200204060 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
Jan45.6 C (114.1 F)-1.7 C (28.9 F)n/an/a
Feb48.9 C (120.0 F)-2.2 C (28.0 F)n/an/a
Mar50.0 C (122.0 F)2.8 C (37.0 F)n/an/a
Apr48.9 C (120.0 F)1.7 C (35.1 F)n/an/a
May48.9 C (120.0 F)7.8 C (46.0 F)n/an/a
Jun48.9 C (120.0 F)10.0 C (50.0 F)n/an/a
Jul48.9 C (120.0 F)10.6 C (51.1 F)n/an/a
Aug46.7 C (116.1 F)10.0 C (50.0 F)n/an/a
Sep46.7 C (116.1 F)8.3 C (46.9 F)n/an/a
Oct48.9 C (120.0 F)6.7 C (44.1 F)n/an/a
Nov42.8 C (109.0 F)0.0 C (32.0 F)n/an/a
Dec43.9 C (111.0 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. 2009 holds the most, with 200. 0501001502001966: 541967: 381968: 351969: 281970: 371971: 191972: 251973: 301974: 281975: 291976: 301977: 141978: 201979: 271980: 291981: 221982: 331983: 381984: 371985: 181986: 101987: 311988: 181989: 221990: 131991: 61992: 221993: 201994: 691995: 341996: 221997: 231998: 661999: 902000: 172001: 22002: 332003: 102004: 162005: 52006: 142007: 72008: 1162009: 2002010: 7196619711976198119861991199620012006
1,464 records at Ayutla still stand. 2009 holds the most, with 200.
Standing records at Ayutla by the year they were set
Year setStanding records
196654
196738
196835
196928
197037
197119
197225
197330
197428
197529
197630
197714
197820
197927
198029
198122
198233
198338
198437
198518
198610
198731
198818
198922
199013
19916
199222
199320
199469
199534
199622
199723
199866
199990
200017
20012
200233
200310
200416
20055
200614
20077
2008116
2009200
20107

All-Time Record Progression

3 new records
When Ayutla set new all-time records 3 all-time records were set at Ayutla between 21 February 2008 and 18 March 2008. Each dot is a new record. Record high maximum temperature21 February 2008: Record high maximum temperature 47.8 C (118.0 F)15 March 2008: Record high maximum temperature 48.9 C (120.0 F)18 March 2008: Record high maximum temperature 50.0 C (122.0 F)
3 all-time records were set at Ayutla between 21 February 2008 and 18 March 2008. Each dot is a new record.
When Ayutla set new all-time records
DateKindDetail
2008-02-21Record high maximum temperatureRecord high maximum temperature 47.8 C (118.0 F)
2008-03-15Record high maximum temperatureRecord high maximum temperature 48.9 C (120.0 F)
2008-03-18Record high maximum temperatureRecord high maximum temperature 50.0 C (122.0 F)

Wettest Day of Each Month

Sep: 162.3 mm (6.4 in)
Record daily precipitation for each month at Ayutla The wettest day on record for each calendar month at Ayutla. The most was 162.3 mm (6.4 in) on 20 September 1993. 050100150200 Jan: 26.9 mm (1.1 in), 11 January 1967 Jan Feb: 56.9 mm (2.2 in), 14 February 1981 Feb Mar: 70.4 mm (2.8 in), 25 March 1999 Mar Apr: 65.8 mm (2.6 in), 24 April 1996 Apr May: 58.9 mm (2.3 in), 25 May 1986 May Jun: 129.3 mm (5.1 in), 26 June 1976 Jun Jul: 81.8 mm (3.2 in), 24 July 1999 Jul Aug: 129.8 mm (5.1 in), 6 August 1977 Aug Sep: 162.3 mm (6.4 in), 20 September 1993 Sep Oct: 81.8 mm (3.2 in), 28 October 1973 Oct Nov: 51.8 mm (2.0 in), 17 November 1966 Nov Dec: 25.4 mm (1.0 in), 4 December 1981 Dec
The wettest day on record for each calendar month at Ayutla. The most was 162.3 mm (6.4 in) on 20 September 1993.
Record daily precipitation for each month at Ayutla
MonthRecord daily precipitation (mm)Date
Jan26.9 mm (1.1 in)11 January 1967
Feb56.9 mm (2.2 in)14 February 1981
Mar70.4 mm (2.8 in)25 March 1999
Apr65.8 mm (2.6 in)24 April 1996
May58.9 mm (2.3 in)25 May 1986
Jun129.3 mm (5.1 in)26 June 1976
Jul81.8 mm (3.2 in)24 July 1999
Aug129.8 mm (5.1 in)6 August 1977
Sep162.3 mm (6.4 in)20 September 1993
Oct81.8 mm (3.2 in)28 October 1973
Nov51.8 mm (2.0 in)17 November 1966
Dec25.4 mm (1.0 in)4 December 1981

Period of Record Coverage

1965 to 2010
Days with data per year at Ayutla 46 years of record at Ayutla, 1965 to 2010. 12 years have data for under 90 percent of days and are left out of rankings: 1965, 1989, 1990, 1991, 1992, 1993, 1995, 1996 and others. 1965: 24 of 365 days1966: 361 of 365 days1967: 364 of 365 days1968: 361 of 366 days1969: 360 of 365 days1970: 361 of 365 days1971: 364 of 365 days1972: 365 of 366 days1973: 363 of 365 days1974: 365 of 365 days1975: 364 of 365 days1976: 361 of 366 days1977: 364 of 365 days1978: 363 of 365 days1979: 364 of 365 days1980: 360 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 365 of 365 days1984: 363 of 366 days1985: 335 of 365 days1986: 362 of 365 days1987: 361 of 365 days1988: 361 of 366 days1989: 150 of 365 days1990: 237 of 365 days1991: 115 of 365 days1992: 271 of 366 days1993: 328 of 365 days1994: 362 of 365 days1995: 210 of 365 days1996: 270 of 366 days1997: 322 of 365 days1998: 330 of 365 days1999: 341 of 365 days2000: 334 of 366 days2001: 335 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 335 of 366 days2005: 304 of 365 days2006: 365 of 365 days2007: 151 of 365 days2008: 353 of 366 days2009: 362 of 365 days2010: 31 of 365 days19701980199020002010
46 years of record at Ayutla, 1965 to 2010. 12 years have data for under 90 percent of days and are left out of rankings: 1965, 1989, 1990, 1991, 1992, 1993, 1995, 1996 and others.
Days with data per year at Ayutla
YearDays with dataShare of yearComplete
1965247%No
196636199%Yes
1967364100%Yes
196836199%Yes
196936099%Yes
197036199%Yes
1971364100%Yes
1972365100%Yes
197336399%Yes
1974365100%Yes
1975364100%Yes
197636199%Yes
1977364100%Yes
197836399%Yes
1979364100%Yes
198036098%Yes
1981365100%Yes
1982364100%Yes
1983365100%Yes
198436399%Yes
198533592%Yes
198636299%Yes
198736199%Yes
198836199%Yes
198915041%No
199023765%No
199111532%No
199227174%No
199332890%No
199436299%Yes
199521058%No
199627074%No
199732288%No
199833090%Yes
199934193%Yes
200033491%Yes
200133592%Yes
2002365100%Yes
2003365100%Yes
200433592%Yes
200530483%No
2006365100%Yes
200715141%No
200835396%Yes
200936299%Yes
2010318%No

Latest Records

20
Latest records at Ayutla
DateStationRecordValueBeat old record byOld record stoodSignificance
24 January 2010Ayutla, MXmonthly high max45.6 C (114.1 F)0.6 C (1.1 F)0 years15 of 100 (Routine)
23 January 2010Ayutla, MXdaily high max43.9 C (111.0 F)3.9 C (7.0 F)0 years10 of 100 (Routine)
22 January 2010Ayutla, MXdaily high max42.8 C (109.0 F)5.0 C (9.0 F)2 years12 of 100 (Routine)
21 January 2010Ayutla, MXmonthly high max45.0 C (113.0 F)1.1 C (2.0 F)1 year15 of 100 (Routine)
20 January 2010Ayutla, MXmonthly high max (Tie)43.9 C (111.0 F)tie1 year3 of 100 (Routine)
19 January 2010Ayutla, MXdaily high max40.6 C (105.1 F)1.7 C (3.1 F)0 years6 of 100 (Routine)
18 January 2010Ayutla, MXdaily high max37.8 C (100.0 F)2.2 C (4.0 F)22 years13 of 100 (Routine)
17 January 2010Ayutla, MXdaily high max (Tie)35.0 C (95.0 F)tie30 years3 of 100 (Routine)
15 January 2010Ayutla, MXdaily rain25.4 mm (1.0 in)16.5 mm (0.6 in)18 years39 of 100 (Notable)
9 January 2010Ayutla, MXdaily low min (Tie)1.7 C (35.1 F)tie4 years1 of 100 (Routine)
24 December 2009Ayutla, MXdaily high max (Tie)40.6 C (105.1 F)tie0 years1 of 100 (Routine)
23 December 2009Ayutla, MXdaily high max36.7 C (98.1 F)1.7 C (3.1 F)31 years16 of 100 (Routine)
22 December 2009Ayutla, MXdaily high max35.0 C (95.0 F)1.1 C (2.0 F)36 years16 of 100 (Routine)
21 December 2009Ayutla, MXdaily high max37.8 C (100.0 F)1.1 C (2.0 F)0 years6 of 100 (Routine)
16 December 2009Ayutla, MXdaily rain24.1 mm (0.9 in)23.3 mm (0.9 in)30 years20 of 100 (Routine)
16 December 2009Ayutla, MXdaily high max36.7 C (98.1 F)5.0 C (9.0 F)0 years14 of 100 (Routine)
15 December 2009Ayutla, MXdaily high max (Tie)40.0 C (104.0 F)tie0 years1 of 100 (Routine)
13 December 2009Ayutla, MXdaily high max37.8 C (100.0 F)2.8 C (5.0 F)26 years16 of 100 (Routine)
12 December 2009Ayutla, MXdaily high max37.8 C (100.0 F)6.1 C (11.0 F)24 years23 of 100 (Routine)
11 December 2009Ayutla, MXdaily high max38.9 C (102.0 F)5.0 C (9.0 F)24 years21 of 100 (Routine)

Climate Trend

29 complete years, 1966 to 2009
Annual mean temperature at Ayutla as warming stripes, 1966 to 2009 One stripe for each of 29 complete years at Ayutla, 1966 to 2009. Blue stripes are years cooler than the station's own mean of 23.8 C (74.8 F); red stripes are warmer. The coolest year was 1999, at 18.6 C (65.4 F), and the warmest was 2009, at 28.7 C (83.6 F). The strongest colour marks a difference of 5.3 C (9.5 F). 1966: 22.2 C, -1.6 C from the station mean1967: 22.7 C, -1.1 C from the station mean1968: 22.2 C, -1.6 C from the station mean1969: 23.4 C, -0.4 C from the station mean1970: 22.6 C, -1.2 C from the station mean1971: 23.2 C, -0.6 C from the station mean1972: 24.6 C, +0.8 C from the station mean1973: 24.3 C, +0.5 C from the station mean1974: 24.1 C, +0.3 C from the station mean1975: 24.0 C, +0.2 C from the station mean1976: 23.2 C, -0.6 C from the station mean1977: 24.3 C, +0.5 C from the station mean1978: 24.5 C, +0.7 C from the station mean1979: 23.8 C, 0.0 C from the station mean1980: 24.5 C, +0.7 C from the station mean1981: 23.6 C, -0.2 C from the station mean1982: 24.7 C, +0.9 C from the station mean1983: 24.2 C, +0.4 C from the station mean1984: 23.5 C, -0.3 C from the station mean1986: 24.1 C, +0.3 C from the station mean1987: 23.3 C, -0.5 C from the station mean1988: 23.7 C, -0.1 C from the station mean1994: 23.0 C, -0.8 C from the station mean1999: 18.6 C, -5.2 C from the station mean2002: 23.0 C, -0.8 C from the station mean2003: 24.2 C, +0.4 C from the station mean2006: 24.9 C, +1.1 C from the station mean2008: 27.2 C, +3.4 C from the station mean2009: 28.7 C, +4.9 C from the station mean196619701975198019851990199520002005
One stripe for each of 29 complete years at Ayutla, 1966 to 2009. Blue stripes are years cooler than the station's own mean of 23.8 C (74.8 F); red stripes are warmer. The coolest year was 1999, at 18.6 C (65.4 F), and the warmest was 2009, at 28.7 C (83.6 F). The strongest colour marks a difference of 5.3 C (9.5 F).
Annual mean temperature at Ayutla as warming stripes, 1966 to 2009
YearAnnual mean temperatureDifference from the station mean
196622.2 C-1.64 C
196722.7 C-1.08 C
196822.2 C-1.62 C
196923.4 C-0.41 C
197022.6 C-1.16 C
197123.2 C-0.65 C
197224.6 C+0.80 C
197324.3 C+0.52 C
197424.1 C+0.30 C
197524.0 C+0.23 C
197623.2 C-0.62 C
197724.3 C+0.53 C
197824.5 C+0.68 C
197923.8 C-0.03 C
198024.5 C+0.70 C
198123.6 C-0.16 C
198224.7 C+0.88 C
198324.2 C+0.44 C
198423.5 C-0.34 C
198624.1 C+0.30 C
198723.3 C-0.52 C
198823.7 C-0.09 C
199423.0 C-0.83 C
199918.6 C-5.23 C
200223.0 C-0.81 C
200324.2 C+0.40 C
200624.9 C+1.13 C
200827.2 C+3.41 C
200928.7 C+4.85 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

1965 to 2010
Yearly extremes at Ayutla: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)50.0 C (122.0 F)200843.9 C (111.0 F)46
Coldest night (TNn)-2.2 C (28.0 F)19762.8 C (37.0 F)46
Wettest day (Rx1day)162.3 mm (6.4 in)199367.1 mm (2.6 in)46
Wettest five days (Rx5day)303.8 mm (12.0 in)1993115.8 mm (4.6 in)46
Longest dry spell (CDD)156 days199858 days46

Hottest day (TXx)

Hottest day (TXx) at Ayutla by year The hottest day of the year at Ayutla, 1965 to 2010. The record is 50.0 C (122.0 F) in 2008, marked on the chart; the median year is 43.9 C (111.0 F). 303540455019701980199020002010Record: 50.0 C (122.0 F) in 2008
The hottest day of the year at Ayutla, 1965 to 2010. The record is 50.0 C (122.0 F) in 2008, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Ayutla by year
YearHottest day (TXx)
196533.3 C (91.9 F)
196641.1 C (106.0 F)
196743.9 C (111.0 F)
196845.0 C (113.0 F)
196943.9 C (111.0 F)
197045.0 C (113.0 F)
197145.0 C (113.0 F)
197245.0 C (113.0 F)
197346.1 C (115.0 F)
197445.0 C (113.0 F)
197545.0 C (113.0 F)
197643.9 C (111.0 F)
197745.0 C (113.0 F)
197845.6 C (114.1 F)
197944.4 C (111.9 F)
198045.0 C (113.0 F)
198142.8 C (109.0 F)
198245.6 C (114.1 F)
198345.0 C (113.0 F)
198445.0 C (113.0 F)
198542.2 C (108.0 F)
198643.9 C (111.0 F)
198741.7 C (107.1 F)
198841.1 C (106.0 F)
198940.0 C (104.0 F)
199042.2 C (108.0 F)
199143.3 C (109.9 F)
199238.3 C (100.9 F)
199338.9 C (102.0 F)
199440.0 C (104.0 F)
199540.6 C (105.1 F)
199641.1 C (106.0 F)
199738.3 C (100.9 F)
199840.0 C (104.0 F)
199930.0 C (86.0 F)
200040.0 C (104.0 F)
200142.8 C (109.0 F)
200243.9 C (111.0 F)
200345.0 C (113.0 F)
200445.0 C (113.0 F)
200541.7 C (107.1 F)
200645.0 C (113.0 F)
200740.6 C (105.1 F)
200850.0 C (122.0 F)
200950.0 C (122.0 F)
201045.6 C (114.1 F)

Coldest night (TNn)

Coldest night (TNn) at Ayutla by year The coldest night of the year at Ayutla, 1965 to 2010. The record is -2.2 C (28.0 F) in 1976, marked on the chart; the median year is 2.8 C (37.0 F). -5051019701980199020002010Record: -2.2 C (28.0 F) in 1976
The coldest night of the year at Ayutla, 1965 to 2010. The record is -2.2 C (28.0 F) in 1976, marked on the chart; the median year is 2.8 C (37.0 F).
Coldest night (TNn) at Ayutla by year
YearColdest night (TNn)
19655.0 C (41.0 F)
19661.7 C (35.1 F)
19672.2 C (36.0 F)
19682.8 C (37.0 F)
19695.0 C (41.0 F)
19700.0 C (32.0 F)
19711.7 C (35.1 F)
19723.9 C (39.0 F)
19730.0 C (32.0 F)
1974-0.6 C (30.9 F)
1975-1.7 C (28.9 F)
1976-2.2 C (28.0 F)
19770.0 C (32.0 F)
19785.0 C (41.0 F)
19790.6 C (33.1 F)
19802.8 C (37.0 F)
19813.3 C (37.9 F)
19821.1 C (34.0 F)
1983-2.2 C (28.0 F)
19842.2 C (36.0 F)
19850.0 C (32.0 F)
19860.6 C (33.1 F)
19873.3 C (37.9 F)
19880.6 C (33.1 F)
19891.7 C (35.1 F)
19902.8 C (37.0 F)
19916.1 C (43.0 F)
19928.3 C (46.9 F)
19936.1 C (43.0 F)
19942.8 C (37.0 F)
19957.8 C (46.0 F)
19967.2 C (45.0 F)
19970.0 C (32.0 F)
19983.9 C (39.0 F)
19990.6 C (33.1 F)
20003.3 C (37.9 F)
20015.6 C (42.1 F)
20025.0 C (41.0 F)
20030.6 C (33.1 F)
20042.8 C (37.0 F)
20053.9 C (39.0 F)
20060.6 C (33.1 F)
20077.8 C (46.0 F)
20082.8 C (37.0 F)
20092.8 C (37.0 F)
20101.7 C (35.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ayutla by year The wettest day of the year at Ayutla, 1965 to 2010. The record is 162.3 mm (6.4 in) in 1993, marked on the chart; the median year is 67.1 mm (2.6 in). 05010015020019701980199020002010Record: 162.3 mm (6.4 in) in 1993
The wettest day of the year at Ayutla, 1965 to 2010. The record is 162.3 mm (6.4 in) in 1993, marked on the chart; the median year is 67.1 mm (2.6 in).
Wettest day (Rx1day) at Ayutla by year
YearWettest day (Rx1day)
19650.0 mm (0.00 in)
196651.8 mm (2.0 in)
196779.8 mm (3.1 in)
1968116.8 mm (4.6 in)
1969106.9 mm (4.2 in)
197053.3 mm (2.1 in)
197171.4 mm (2.8 in)
197260.5 mm (2.4 in)
1973102.9 mm (4.1 in)
1974123.4 mm (4.9 in)
1975114.8 mm (4.5 in)
1976129.3 mm (5.1 in)
1977129.8 mm (5.1 in)
1978106.9 mm (4.2 in)
1979103.9 mm (4.1 in)
198064.3 mm (2.5 in)
1981112.8 mm (4.4 in)
198241.4 mm (1.6 in)
198350.3 mm (2.0 in)
198478.0 mm (3.1 in)
198540.4 mm (1.6 in)
198673.9 mm (2.9 in)
198743.9 mm (1.7 in)
1988117.3 mm (4.6 in)
198921.8 mm (0.9 in)
199063.0 mm (2.5 in)
19915.8 mm (0.23 in)
199254.9 mm (2.2 in)
1993162.3 mm (6.4 in)
199495.0 mm (3.7 in)
199530.0 mm (1.2 in)
199665.8 mm (2.6 in)
199736.8 mm (1.4 in)
199879.8 mm (3.1 in)
199981.8 mm (3.2 in)
200058.9 mm (2.3 in)
200147.8 mm (1.9 in)
200272.9 mm (2.9 in)
200373.9 mm (2.9 in)
200424.9 mm (1.0 in)
200548.8 mm (1.9 in)
200641.9 mm (1.6 in)
200731.8 mm (1.3 in)
200868.3 mm (2.7 in)
200975.9 mm (3.0 in)
201025.4 mm (1.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ayutla by year The wettest five days of the year at Ayutla, 1965 to 2010. The record is 303.8 mm (12.0 in) in 1993, marked on the chart; the median year is 115.8 mm (4.6 in). 010020030040019701980199020002010Record: 303.8 mm (12.0 in) in 1993
The wettest five days of the year at Ayutla, 1965 to 2010. The record is 303.8 mm (12.0 in) in 1993, marked on the chart; the median year is 115.8 mm (4.6 in).
Wettest five days (Rx5day) at Ayutla by year
YearWettest five days (Rx5day)
19650.0 mm (0.00 in)
1966100.3 mm (3.9 in)
1967209.2 mm (8.2 in)
1968176.7 mm (7.0 in)
1969235.8 mm (9.3 in)
1970151.3 mm (6.0 in)
1971117.6 mm (4.6 in)
1972115.4 mm (4.5 in)
1973189.7 mm (7.5 in)
1974242.1 mm (9.5 in)
1975249.4 mm (9.8 in)
1976146.1 mm (5.8 in)
1977129.8 mm (5.1 in)
1978225.5 mm (8.9 in)
1979181.4 mm (7.1 in)
1980116.1 mm (4.6 in)
1981273.3 mm (10.8 in)
198296.0 mm (3.8 in)
198387.2 mm (3.4 in)
1984187.7 mm (7.4 in)
198590.4 mm (3.6 in)
198690.4 mm (3.6 in)
198763.1 mm (2.5 in)
1988261.9 mm (10.3 in)
198926.6 mm (1.0 in)
199076.5 mm (3.0 in)
199116.8 mm (0.7 in)
1992110.8 mm (4.4 in)
1993303.8 mm (12.0 in)
199499.8 mm (3.9 in)
199550.6 mm (2.0 in)
199676.7 mm (3.0 in)
199772.9 mm (2.9 in)
1998184.0 mm (7.2 in)
1999168.6 mm (6.6 in)
2000120.2 mm (4.7 in)
200175.0 mm (3.0 in)
2002135.0 mm (5.3 in)
2003139.4 mm (5.5 in)
200451.9 mm (2.0 in)
200593.2 mm (3.7 in)
200677.5 mm (3.1 in)
200750.6 mm (2.0 in)
2008159.9 mm (6.3 in)
2009107.7 mm (4.2 in)
201034.3 mm (1.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ayutla by year The longest dry spell of the year at Ayutla, 1965 to 2010. The record is 156 days in 1998, marked on the chart; the median year is 58 days. 05010015020019701980199020002010Record: 156 days in 1998
The longest dry spell of the year at Ayutla, 1965 to 2010. The record is 156 days in 1998, marked on the chart; the median year is 58 days.
Longest dry spell (CDD) at Ayutla by year
YearLongest dry spell (CDD)
196531 days
196642 days
196757 days
196843 days
196954 days
197076 days
1971128 days
197230 days
197373 days
197440 days
1975110 days
197651 days
1977111 days
197849 days
197940 days
198044 days
198139 days
198251 days
198386 days
198466 days
198537 days
1986103 days
198776 days
198887 days
198955 days
199032 days
199158 days
199238 days
199353 days
199486 days
199598 days
199682 days
199751 days
1998156 days
199983 days
200038 days
200149 days
200279 days
2003144 days
200465 days
200561 days
200658 days
200731 days
200872 days
2009135 days
201016 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

35 years, 1966 to 2009

A day with at least 78.6 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 170.2 mm (6.7 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 years78.6 mm (3.1 in)
5 years108.2 mm (4.3 in)
10 years125.6 mm (4.9 in)
25 years145.2 mm (5.7 in)
50 years158.3 mm (6.2 in)Longer than the 35 years of record
100 years170.2 mm (6.7 in)Longer than the 35 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, 35 years of values from 1966 to 2009.

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: 162.3 mm (6.4 in) in 1993; 129.8 mm (5.1 in) in 1977; 129.3 mm (5.1 in) in 1976.

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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).