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Plan de Ayala Weather Records (MXN00028075)

Record envelope, standing records and threshold days for Plan de Ayala (MXN00028075), Mexico, with 52 years of record.

Key Facts for Plan de Ayala

  • Plan de Ayala (MXN00028075) is a weather station in Mexico at 23.57 latitude and -99.40 longitude, 840 m (2,755 ft) above sea level.
  • The station reports from 1960 to 2011, 52 years of record.
  • 1,464 records set at Plan de Ayala still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Plan de Ayala set a daily record low minimum temperature of 1.7 C (35.1 F) on 8 December 2011.

About the Station

  • Location: Mexico, 23.57 latitude, -99.40 longitude.
  • Elevation: 840 m (2,755 ft).
  • Period of record: 1960 to 2011, 52 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 Plan de Ayala, with 2026 drawn through them The band shows the record high and record low for each calendar day at Plan de Ayala. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Plan de Ayala. 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 Plan de Ayala, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.6 C (96.1 F)-3.3 C (26.1 F)n/an/a
Feb41.7 C (107.1 F)-1.1 C (30.0 F)n/an/a
Mar41.7 C (107.1 F)-1.1 C (30.0 F)n/an/a
Apr45.0 C (113.0 F)5.0 C (41.0 F)n/an/a
May45.6 C (114.1 F)6.7 C (44.1 F)n/an/a
Jun45.0 C (113.0 F)8.9 C (48.0 F)n/an/a
Jul45.0 C (113.0 F)10.0 C (50.0 F)n/an/a
Aug41.1 C (106.0 F)10.0 C (50.0 F)n/an/a
Sep42.2 C (108.0 F)7.8 C (46.0 F)n/an/a
Oct40.0 C (104.0 F)3.9 C (39.0 F)n/an/a
Nov38.9 C (102.0 F)0.0 C (32.0 F)n/an/a
Dec36.7 C (98.1 F)-4.4 C (24.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Plan de Ayala by the year they were set 1,464 records at Plan de Ayala still stand. 1960 holds the most, with 107. 0501001501960: 1071961: 811962: 881963: 231964: 381965: 311966: 431967: 331968: 391969: 301970: 311971: 211972: 201973: 301974: 241975: 271976: 301977: 171978: 141979: 121980: 231981: 141982: 191983: 371985: 171986: 201987: 241988: 221989: 121990: 211991: 531992: 291993: 361994: 301995: 301996: 521997: 221998: 241999: 302000: 332001: 182002: 152003: 122004: 62005: 42006: 222007: 162008: 252009: 152010: 192011: 25196019661972197819851991199720032009
1,464 records at Plan de Ayala still stand. 1960 holds the most, with 107.
Standing records at Plan de Ayala by the year they were set
Year setStanding records
1960107
196181
196288
196323
196438
196531
196643
196733
196839
196930
197031
197121
197220
197330
197424
197527
197630
197717
197814
197912
198023
198114
198219
198337
198517
198620
198724
198822
198912
199021
199153
199229
199336
199430
199530
199652
199722
199824
199930
200033
200118
200215
200312
20046
20054
200622
200716
200825
200915
201019
201125

All-Time Record Progression

1 new records
When Plan de Ayala set new all-time records 1 all-time records were set at Plan de Ayala between 8 May 1998 and 8 May 1998. Each dot is a new record. Record high maximum temperature8 May 1998: Record high maximum temperature 45.6 C (114.1 F)
1 all-time records were set at Plan de Ayala between 8 May 1998 and 8 May 1998. Each dot is a new record.
When Plan de Ayala set new all-time records
DateKindDetail
1998-05-08Record high maximum temperatureRecord high maximum temperature 45.6 C (114.1 F)

Wettest Day of Each Month

Sep: 136.9 mm (5.4 in)
Record daily precipitation for each month at Plan de Ayala The wettest day on record for each calendar month at Plan de Ayala. The most was 136.9 mm (5.4 in) on 2 September 1977. 050100150 Jan: 34.8 mm (1.4 in), 9 January 1992 Jan Feb: 42.9 mm (1.7 in), 26 February 2005 Feb Mar: 73.9 mm (2.9 in), 11 March 1972 Mar Apr: 58.9 mm (2.3 in), 22 April 1979 Apr May: 64.8 mm (2.6 in), 20 May 1975 May Jun: 80.8 mm (3.2 in), 26 June 1962 Jun Jul: 95.0 mm (3.7 in), 1 July 2010 Jul Aug: 130.0 mm (5.1 in), 23 August 1996 Aug Sep: 136.9 mm (5.4 in), 2 September 1977 Sep Oct: 90.9 mm (3.6 in), 10 October 1966 Oct Nov: 34.8 mm (1.4 in), 18 November 1995 Nov Dec: 70.9 mm (2.8 in), 2 December 1979 Dec
The wettest day on record for each calendar month at Plan de Ayala. The most was 136.9 mm (5.4 in) on 2 September 1977.
Record daily precipitation for each month at Plan de Ayala
MonthRecord daily precipitation (mm)Date
Jan34.8 mm (1.4 in)9 January 1992
Feb42.9 mm (1.7 in)26 February 2005
Mar73.9 mm (2.9 in)11 March 1972
Apr58.9 mm (2.3 in)22 April 1979
May64.8 mm (2.6 in)20 May 1975
Jun80.8 mm (3.2 in)26 June 1962
Jul95.0 mm (3.7 in)1 July 2010
Aug130.0 mm (5.1 in)23 August 1996
Sep136.9 mm (5.4 in)2 September 1977
Oct90.9 mm (3.6 in)10 October 1966
Nov34.8 mm (1.4 in)18 November 1995
Dec70.9 mm (2.8 in)2 December 1979

Period of Record Coverage

1960 to 2011
Days with data per year at Plan de Ayala 51 years of record at Plan de Ayala, 1960 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1960, 1978, 1979, 1989, 2005. 1960: 221 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 334 of 366 days1965: 363 of 365 days1966: 364 of 365 days1967: 364 of 365 days1968: 362 of 366 days1969: 360 of 365 days1970: 365 of 365 days1971: 364 of 365 days1972: 366 of 366 days1973: 364 of 365 days1974: 365 of 365 days1975: 363 of 365 days1976: 363 of 366 days1977: 365 of 365 days1978: 118 of 365 days1979: 275 of 365 days1980: 360 of 366 days1981: 364 of 365 days1982: 362 of 365 days1983: 365 of 365 days1985: 361 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 335 of 366 days1989: 184 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 365 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 363 of 365 days1998: 365 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 363 of 365 days2002: 365 of 365 days2003: 364 of 365 days2004: 365 of 366 days2005: 325 of 365 days2006: 365 of 365 days2007: 334 of 365 days2008: 366 of 366 days2009: 364 of 365 days2010: 332 of 365 days2011: 350 of 365 days196019701980199020002010
51 years of record at Plan de Ayala, 1960 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1960, 1978, 1979, 1989, 2005.
Days with data per year at Plan de Ayala
YearDays with dataShare of yearComplete
196022160%No
1961365100%Yes
1962364100%Yes
1963365100%Yes
196433491%Yes
196536399%Yes
1966364100%Yes
1967364100%Yes
196836299%Yes
196936099%Yes
1970365100%Yes
1971364100%Yes
1972366100%Yes
1973364100%Yes
1974365100%Yes
197536399%Yes
197636399%Yes
1977365100%Yes
197811832%No
197927575%No
198036098%Yes
1981364100%Yes
198236299%Yes
1983365100%Yes
198536199%Yes
1986365100%Yes
1987365100%Yes
198833592%Yes
198918450%No
1990365100%Yes
1991365100%Yes
1992365100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
199736399%Yes
1998365100%Yes
1999364100%Yes
2000366100%Yes
200136399%Yes
2002365100%Yes
2003364100%Yes
2004365100%Yes
200532589%No
2006365100%Yes
200733492%Yes
2008366100%Yes
2009364100%Yes
201033291%Yes
201135096%Yes

Latest Records

20
Latest records at Plan de Ayala
DateStationRecordValueBeat old record byOld record stoodSignificance
8 December 2011Plan de Ayala, MXdaily low min1.7 C (35.1 F)1.1 C (2.0 F)8 years10 of 100 (Routine)
30 November 2011Plan de Ayala, MXdaily low min (Tie)1.7 C (35.1 F)tie34 years3 of 100 (Routine)
29 November 2011Plan de Ayala, MXdaily low min0.6 C (33.1 F)1.1 C (2.0 F)37 years19 of 100 (Routine)
28 November 2011Plan de Ayala, MXdaily low min (Tie)1.7 C (35.1 F)tie36 years4 of 100 (Routine)
12 November 2011Plan de Ayala, MXdaily low min (Tie)5.0 C (41.0 F)tie24 years3 of 100 (Routine)
11 November 2011Plan de Ayala, MXdaily low max16.7 C (62.1 F)1.1 C (2.0 F)33 years17 of 100 (Routine)
11 November 2011Plan de Ayala, MXdaily low min3.9 C (39.0 F)0.5 C (0.9 F)32 years15 of 100 (Routine)
25 October 2011Plan de Ayala, MXdaily low min5.6 C (42.1 F)1.1 C (2.0 F)4 years9 of 100 (Routine)
23 September 2011Plan de Ayala, MXdaily low min10.0 C (50.0 F)2.8 C (5.0 F)36 years28 of 100 (Routine)
22 September 2011Plan de Ayala, MXdaily low min10.6 C (51.1 F)3.3 C (5.9 F)5 years22 of 100 (Routine)
14 September 2011Plan de Ayala, MXdaily low min (Tie)15.0 C (59.0 F)tie4 years1 of 100 (Routine)
12 September 2011Plan de Ayala, MXmonthly low min (Tie)7.8 C (46.0 F)tie0 years3 of 100 (Routine)
11 September 2011Plan de Ayala, MXdaily low min10.0 C (50.0 F)2.8 C (5.0 F)22 years24 of 100 (Routine)
10 September 2011Plan de Ayala, MXmonthly low min7.8 C (46.0 F)1.1 C (2.0 F)43 years33 of 100 (Routine)
9 September 2011Plan de Ayala, MXdaily low min10.0 C (50.0 F)3.9 C (7.0 F)36 years35 of 100 (Notable)
8 September 2011Plan de Ayala, MXmonthly low min (Tie)8.9 C (48.0 F)tie43 years7 of 100 (Routine)
7 September 2011Plan de Ayala, MXdaily low min10.6 C (51.1 F)1.1 C (2.0 F)36 years21 of 100 (Routine)
27 August 2011Plan de Ayala, MXdaily rain63.0 mm (2.5 in)33.0 mm (1.3 in)4 years27 of 100 (Routine)
18 August 2011Plan de Ayala, MXdaily low min (Tie)15.0 C (59.0 F)tie10 years2 of 100 (Routine)
15 August 2011Plan de Ayala, MXdaily low min (Tie)15.0 C (59.0 F)tie50 years5 of 100 (Routine)

Climate Trend

41 complete years, 1961 to 2009
Annual mean temperature at Plan de Ayala as warming stripes, 1961 to 2009 One stripe for each of 41 complete years at Plan de Ayala, 1961 to 2009. Blue stripes are years cooler than the station's own mean of 21.4 C (70.6 F); red stripes are warmer. The coolest year was 1976, at 19.7 C (67.5 F), and the warmest was 1961, at 23.9 C (74.9 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1961: 23.9 C, +2.4 C from the station mean1962: 23.6 C, +2.2 C from the station mean1963: 21.8 C, +0.3 C from the station mean1965: 22.0 C, +0.6 C from the station mean1966: 20.6 C, -0.8 C from the station mean1967: 21.3 C, -0.2 C from the station mean1968: 21.2 C, -0.2 C from the station mean1969: 21.6 C, +0.2 C from the station mean1970: 20.8 C, -0.7 C from the station mean1971: 21.8 C, +0.3 C from the station mean1972: 21.2 C, -0.2 C from the station mean1973: 20.7 C, -0.7 C from the station mean1974: 21.0 C, -0.5 C from the station mean1975: 21.0 C, -0.4 C from the station mean1976: 19.7 C, -1.7 C from the station mean1977: 20.5 C, -1.0 C from the station mean1980: 22.2 C, +0.8 C from the station mean1981: 21.8 C, +0.4 C from the station mean1982: 22.1 C, +0.7 C from the station mean1983: 22.0 C, +0.5 C from the station mean1985: 21.7 C, +0.3 C from the station mean1986: 22.1 C, +0.7 C from the station mean1987: 21.2 C, -0.3 C from the station mean1990: 21.8 C, +0.4 C from the station mean1991: 22.3 C, +0.9 C from the station mean1992: 21.2 C, -0.3 C from the station mean1993: 20.6 C, -0.8 C from the station mean1994: 21.5 C, +0.1 C from the station mean1995: 22.1 C, +0.7 C from the station mean1996: 22.0 C, +0.6 C from the station mean1997: 21.0 C, -0.5 C from the station mean1998: 22.7 C, +1.3 C from the station mean1999: 21.3 C, -0.1 C from the station mean2000: 20.0 C, -1.4 C from the station mean2001: 20.2 C, -1.2 C from the station mean2002: 22.1 C, +0.7 C from the station mean2003: 21.9 C, +0.5 C from the station mean2004: 20.8 C, -0.7 C from the station mean2006: 20.4 C, -1.0 C from the station mean2008: 20.1 C, -1.3 C from the station mean2009: 20.9 C, -0.6 C from the station mean1961196519701975198019851990199520002005
One stripe for each of 41 complete years at Plan de Ayala, 1961 to 2009. Blue stripes are years cooler than the station's own mean of 21.4 C (70.6 F); red stripes are warmer. The coolest year was 1976, at 19.7 C (67.5 F), and the warmest was 1961, at 23.9 C (74.9 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Plan de Ayala as warming stripes, 1961 to 2009
YearAnnual mean temperatureDifference from the station mean
196123.9 C+2.42 C
196223.6 C+2.18 C
196321.8 C+0.34 C
196522.0 C+0.60 C
196620.6 C-0.81 C
196721.3 C-0.17 C
196821.2 C-0.20 C
196921.6 C+0.16 C
197020.8 C-0.68 C
197121.8 C+0.33 C
197221.2 C-0.25 C
197320.7 C-0.71 C
197421.0 C-0.47 C
197521.0 C-0.45 C
197619.7 C-1.72 C
197720.5 C-0.96 C
198022.2 C+0.80 C
198121.8 C+0.36 C
198222.1 C+0.68 C
198322.0 C+0.54 C
198521.7 C+0.31 C
198622.1 C+0.66 C
198721.2 C-0.27 C
199021.8 C+0.40 C
199122.3 C+0.88 C
199221.2 C-0.28 C
199320.6 C-0.85 C
199421.5 C+0.07 C
199522.1 C+0.66 C
199622.0 C+0.59 C
199721.0 C-0.48 C
199822.7 C+1.29 C
199921.3 C-0.14 C
200020.0 C-1.44 C
200120.2 C-1.23 C
200222.1 C+0.71 C
200321.9 C+0.51 C
200420.8 C-0.67 C
200620.4 C-1.02 C
200820.1 C-1.33 C
200920.9 C-0.56 C

The fitted trend in annual mean temperature here over 1961 to 2009 is -0.17 C (-0.36 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.31 F (-0.66 to 0.04) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Plan de Ayala
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.17 C (-0.36 to 0.02) per decade-0.31 F (-0.66 to 0.04) per decade1961 to 200941Not clearly different from zero
Mean daily maximum-0.3 C (-0.6 to 0.1) per decade-0.5 F (-1.1 to 0.1) per decade1961 to 200941Not clearly different from zero
Mean daily minimum-0.1 C (-0.3 to 0.1) per decade-0.1 F (-0.5 to 0.2) per decade1961 to 200941Not clearly different from zero

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

1960 to 2011
Yearly extremes at Plan de Ayala: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.6 C (114.1 F)199840.0 C (104.0 F)51
Coldest night (TNn)-4.4 C (24.1 F)19890.6 C (33.1 F)51
Wettest day (Rx1day)136.9 mm (5.4 in)197750.3 mm (2.0 in)51
Wettest five days (Rx5day)311.5 mm (12.3 in)201086.7 mm (3.4 in)51
Longest dry spell (CDD)129 days197563 days51

Hottest day (TXx)

Hottest day (TXx) at Plan de Ayala by year The hottest day of the year at Plan de Ayala, 1960 to 2011. The record is 45.6 C (114.1 F) in 1998, marked on the chart; the median year is 40.0 C (104.0 F). 35404550196019701980199020002010Record: 45.6 C (114.1 F) in 1998
The hottest day of the year at Plan de Ayala, 1960 to 2011. The record is 45.6 C (114.1 F) in 1998, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Plan de Ayala by year
YearHottest day (TXx)
196045.0 C (113.0 F)
196143.9 C (111.0 F)
196243.9 C (111.0 F)
196341.1 C (106.0 F)
196442.8 C (109.0 F)
196540.0 C (104.0 F)
196638.9 C (102.0 F)
196740.6 C (105.1 F)
196838.9 C (102.0 F)
196938.9 C (102.0 F)
197040.0 C (104.0 F)
197140.0 C (104.0 F)
197237.8 C (100.0 F)
197340.6 C (105.1 F)
197440.0 C (104.0 F)
197540.6 C (105.1 F)
197636.7 C (98.1 F)
197738.9 C (102.0 F)
197838.9 C (102.0 F)
197942.2 C (108.0 F)
198040.6 C (105.1 F)
198140.6 C (105.1 F)
198241.7 C (107.1 F)
198345.0 C (113.0 F)
198541.7 C (107.1 F)
198640.6 C (105.1 F)
198737.8 C (100.0 F)
198841.7 C (107.1 F)
198940.6 C (105.1 F)
199041.7 C (107.1 F)
199140.6 C (105.1 F)
199238.9 C (102.0 F)
199337.8 C (100.0 F)
199440.0 C (104.0 F)
199540.0 C (104.0 F)
199640.0 C (104.0 F)
199736.7 C (98.1 F)
199845.6 C (114.1 F)
199941.7 C (107.1 F)
200035.0 C (95.0 F)
200137.2 C (99.0 F)
200238.9 C (102.0 F)
200337.8 C (100.0 F)
200437.8 C (100.0 F)
200537.8 C (100.0 F)
200638.9 C (102.0 F)
200735.6 C (96.1 F)
200840.0 C (104.0 F)
200938.9 C (102.0 F)
201038.9 C (102.0 F)
201141.7 C (107.1 F)

Coldest night (TNn)

Coldest night (TNn) at Plan de Ayala by year The coldest night of the year at Plan de Ayala, 1960 to 2011. The record is -4.4 C (24.1 F) in 1989, marked on the chart; the median year is 0.6 C (33.1 F). -5-2.502.55196019701980199020002010Record: -4.4 C (24.1 F) in 1989
The coldest night of the year at Plan de Ayala, 1960 to 2011. The record is -4.4 C (24.1 F) in 1989, marked on the chart; the median year is 0.6 C (33.1 F).
Coldest night (TNn) at Plan de Ayala by year
YearColdest night (TNn)
19603.3 C (37.9 F)
19613.9 C (39.0 F)
1962-3.3 C (26.1 F)
19630.6 C (33.1 F)
19640.0 C (32.0 F)
19650.6 C (33.1 F)
1966-1.1 C (30.0 F)
1967-1.1 C (30.0 F)
19682.8 C (37.0 F)
19690.6 C (33.1 F)
19700.6 C (33.1 F)
19710.6 C (33.1 F)
19721.7 C (35.1 F)
19730.6 C (33.1 F)
19740.0 C (32.0 F)
19750.6 C (33.1 F)
1976-1.1 C (30.0 F)
19770.6 C (33.1 F)
19781.7 C (35.1 F)
19794.4 C (39.9 F)
1980-1.1 C (30.0 F)
19811.7 C (35.1 F)
19820.6 C (33.1 F)
1983-1.1 C (30.0 F)
19850.6 C (33.1 F)
19861.7 C (35.1 F)
19871.7 C (35.1 F)
19880.0 C (32.0 F)
1989-4.4 C (24.1 F)
1990-3.3 C (26.1 F)
19913.9 C (39.0 F)
19921.7 C (35.1 F)
19931.7 C (35.1 F)
19945.0 C (41.0 F)
19953.9 C (39.0 F)
19960.6 C (33.1 F)
1997-2.2 C (28.0 F)
19985.0 C (41.0 F)
19990.0 C (32.0 F)
20000.6 C (33.1 F)
20015.0 C (41.0 F)
20022.8 C (37.0 F)
20030.6 C (33.1 F)
20040.6 C (33.1 F)
20052.8 C (37.0 F)
20061.7 C (35.1 F)
20072.8 C (37.0 F)
20080.6 C (33.1 F)
20092.8 C (37.0 F)
20100.0 C (32.0 F)
20110.6 C (33.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Plan de Ayala by year The wettest day of the year at Plan de Ayala, 1960 to 2011. The record is 136.9 mm (5.4 in) in 1977, marked on the chart; the median year is 50.3 mm (2.0 in). 050100150196019701980199020002010Record: 136.9 mm (5.4 in) in 1977
The wettest day of the year at Plan de Ayala, 1960 to 2011. The record is 136.9 mm (5.4 in) in 1977, marked on the chart; the median year is 50.3 mm (2.0 in).
Wettest day (Rx1day) at Plan de Ayala by year
YearWettest day (Rx1day)
196031.0 mm (1.2 in)
196134.3 mm (1.4 in)
196280.8 mm (3.2 in)
196363.8 mm (2.5 in)
196431.0 mm (1.2 in)
196523.9 mm (0.9 in)
196690.9 mm (3.6 in)
196795.0 mm (3.7 in)
196833.8 mm (1.3 in)
196942.9 mm (1.7 in)
197053.8 mm (2.1 in)
197158.9 mm (2.3 in)
197273.9 mm (2.9 in)
197341.9 mm (1.6 in)
197459.9 mm (2.4 in)
197580.3 mm (3.2 in)
197652.8 mm (2.1 in)
1977136.9 mm (5.4 in)
197845.5 mm (1.8 in)
197970.9 mm (2.8 in)
198027.9 mm (1.1 in)
198133.8 mm (1.3 in)
198229.0 mm (1.1 in)
198340.9 mm (1.6 in)
198530.0 mm (1.2 in)
198650.8 mm (2.0 in)
198741.9 mm (1.6 in)
198830.0 mm (1.2 in)
198929.0 mm (1.1 in)
199032.8 mm (1.3 in)
199147.8 mm (1.9 in)
199254.9 mm (2.2 in)
1993117.9 mm (4.6 in)
199452.8 mm (2.1 in)
199590.9 mm (3.6 in)
1996130.0 mm (5.1 in)
199786.6 mm (3.4 in)
19989.7 mm (0.38 in)
19999.4 mm (0.37 in)
20009.1 mm (0.36 in)
200165.8 mm (2.6 in)
200237.8 mm (1.5 in)
200359.9 mm (2.4 in)
200450.3 mm (2.0 in)
200559.9 mm (2.4 in)
200639.9 mm (1.6 in)
200747.8 mm (1.9 in)
200857.9 mm (2.3 in)
200945.0 mm (1.8 in)
201095.0 mm (3.7 in)
201163.0 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Plan de Ayala by year The wettest five days of the year at Plan de Ayala, 1960 to 2011. The record is 311.5 mm (12.3 in) in 2010, marked on the chart; the median year is 86.7 mm (3.4 in). 0100200300400196019701980199020002010Record: 311.5 mm (12.3 in) in 2010
The wettest five days of the year at Plan de Ayala, 1960 to 2011. The record is 311.5 mm (12.3 in) in 2010, marked on the chart; the median year is 86.7 mm (3.4 in).
Wettest five days (Rx5day) at Plan de Ayala by year
YearWettest five days (Rx5day)
196059.7 mm (2.4 in)
196172.6 mm (2.9 in)
1962161.0 mm (6.3 in)
1963131.3 mm (5.2 in)
196468.6 mm (2.7 in)
196523.9 mm (0.9 in)
1966119.9 mm (4.7 in)
1967230.4 mm (9.1 in)
196861.5 mm (2.4 in)
196979.7 mm (3.1 in)
1970120.4 mm (4.7 in)
197182.0 mm (3.2 in)
197294.5 mm (3.7 in)
1973117.6 mm (4.6 in)
1974104.9 mm (4.1 in)
1975175.6 mm (6.9 in)
1976141.3 mm (5.6 in)
1977185.4 mm (7.3 in)
197845.5 mm (1.8 in)
1979124.0 mm (4.9 in)
198047.5 mm (1.9 in)
198179.5 mm (3.1 in)
198244.4 mm (1.7 in)
198398.4 mm (3.9 in)
198556.3 mm (2.2 in)
198652.6 mm (2.1 in)
198751.6 mm (2.0 in)
198888.3 mm (3.5 in)
198952.7 mm (2.1 in)
199050.5 mm (2.0 in)
199193.5 mm (3.7 in)
199286.7 mm (3.4 in)
1993138.5 mm (5.5 in)
199456.6 mm (2.2 in)
1995190.3 mm (7.5 in)
1996208.5 mm (8.2 in)
1997148.1 mm (5.8 in)
199820.1 mm (0.8 in)
199916.1 mm (0.6 in)
200031.8 mm (1.3 in)
200195.8 mm (3.8 in)
200282.1 mm (3.2 in)
200385.8 mm (3.4 in)
200483.6 mm (3.3 in)
2005168.7 mm (6.6 in)
200670.6 mm (2.8 in)
200786.4 mm (3.4 in)
2008143.9 mm (5.7 in)
2009102.4 mm (4.0 in)
2010311.5 mm (12.3 in)
2011127.7 mm (5.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Plan de Ayala by year The longest dry spell of the year at Plan de Ayala, 1960 to 2011. The record is 129 days in 1975, marked on the chart; the median year is 63 days. 050100150196019701980199020002010Record: 129 days in 1975
The longest dry spell of the year at Plan de Ayala, 1960 to 2011. The record is 129 days in 1975, marked on the chart; the median year is 63 days.
Longest dry spell (CDD) at Plan de Ayala by year
YearLongest dry spell (CDD)
196038 days
196142 days
1962101 days
196358 days
196471 days
196567 days
196678 days
196756 days
196838 days
196944 days
197096 days
197185 days
197240 days
197379 days
197455 days
1975129 days
197650 days
197780 days
197833 days
197937 days
198069 days
198140 days
198254 days
198398 days
198583 days
198660 days
198754 days
198873 days
198925 days
199080 days
199166 days
199246 days
199363 days
199451 days
199577 days
1996123 days
199750 days
1998111 days
199984 days
200098 days
200153 days
200275 days
200357 days
200465 days
200538 days
200648 days
200733 days
200882 days
200968 days
201037 days
201176 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

47 years, 1961 to 2011

A day with at least 50.1 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 151.3 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Plan de Ayala: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years50.1 mm (2.0 in)
5 years76.2 mm (3.0 in)
10 years93.8 mm (3.7 in)
25 years116.6 mm (4.6 in)
50 years133.8 mm (5.3 in)Longer than the 47 years of record
100 years151.3 mm (6.0 in)Longer than the 47 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, 47 years of values from 1961 to 2011.

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: 136.9 mm (5.4 in) in 1977; 130.0 mm (5.1 in) in 1996; 117.9 mm (4.6 in) in 1993.

Download the Data

  • Data for Plan de Ayala standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Plan de Ayala 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).