Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Porfirio Diaz Weather Records (MXN00026297)

Record envelope, standing records and threshold days for Porfirio Diaz (MXN00026297), Mexico, with 43 years of record.

Key Facts for Porfirio Diaz

  • Porfirio Diaz (MXN00026297) is a weather station in Mexico at 27.58 latitude and -109.92 longitude, 35 m (114 ft) above sea level.
  • The station reports from 1969 to 2011, 43 years of record.
  • 1,464 records set at Porfirio Diaz still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Porfirio Diaz tied a daily record low maximum temperature of 18.9 C (66.0 F) on 12 December 2011.

About the Station

  • Location: Mexico, 27.58 latitude, -109.92 longitude.
  • Elevation: 35 m (114 ft).
  • Period of record: 1969 to 2011, 43 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 Porfirio Diaz, with 2026 drawn through them The band shows the record high and record low for each calendar day at Porfirio Diaz. 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 Porfirio Diaz. 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 Porfirio Diaz, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan40.6 C (105.1 F)-1.1 C (30.0 F)n/an/a
Feb42.2 C (108.0 F)0.0 C (32.0 F)n/an/a
Mar41.1 C (106.0 F)0.6 C (33.1 F)n/an/a
Apr45.0 C (113.0 F)1.7 C (35.1 F)n/an/a
May45.0 C (113.0 F)5.0 C (41.0 F)n/an/a
Jun46.1 C (115.0 F)10.0 C (50.0 F)n/an/a
Jul47.8 C (118.0 F)13.9 C (57.0 F)n/an/a
Aug46.7 C (116.1 F)16.7 C (62.1 F)n/an/a
Sep45.6 C (114.1 F)15.0 C (59.0 F)n/an/a
Oct46.7 C (116.1 F)6.1 C (43.0 F)n/an/a
Nov41.7 C (107.1 F)0.0 C (32.0 F)n/an/a
Dec38.9 C (102.0 F)-2.2 C (28.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Porfirio Diaz by the year they were set 1,464 records at Porfirio Diaz still stand. 1978 holds the most, with 171. 0501001502001969: 151970: 751971: 331972: 241973: 1451974: 721975: 911976: 151977: 1521978: 1711979: 911980: 371981: 151982: 211983: 261984: 161985: 201986: 231987: 191988: 201989: 251990: 171991: 101992: 141993: 131994: 61995: 731996: 91997: 131998: 111999: 102000: 202001: 222002: 122003: 132004: 242005: 32006: 62007: 252008: 182009: 132010: 112011: 15196919741979198419891994199920042009
1,464 records at Porfirio Diaz still stand. 1978 holds the most, with 171.
Standing records at Porfirio Diaz by the year they were set
Year setStanding records
196915
197075
197133
197224
1973145
197472
197591
197615
1977152
1978171
197991
198037
198115
198221
198326
198416
198520
198623
198719
198820
198925
199017
199110
199214
199313
19946
199573
19969
199713
199811
199910
200020
200122
200212
200313
200424
20053
20066
200725
200818
200913
201011
201115

All-Time Record Progression

2 new records
When Porfirio Diaz set new all-time records 2 all-time records were set at Porfirio Diaz between 18 January 2007 and 16 July 2007. Each dot is a new record. Record low maximum temperatureRecord high maximum temperature18 January 2007: Record low maximum temperature 13.9 C (57.0 F)16 July 2007: Record high maximum temperature 47.8 C (118.0 F)
2 all-time records were set at Porfirio Diaz between 18 January 2007 and 16 July 2007. Each dot is a new record.
When Porfirio Diaz set new all-time records
DateKindDetail
2007-01-18Record low maximum temperatureRecord low maximum temperature 13.9 C (57.0 F)
2007-07-16Record high maximum temperatureRecord high maximum temperature 47.8 C (118.0 F)

Wettest Day of Each Month

Aug: 185.9 mm (7.3 in)
Record daily precipitation for each month at Porfirio Diaz The wettest day on record for each calendar month at Porfirio Diaz. The most was 185.9 mm (7.3 in) on 23 August 2000. 050100150200 Jan: 74.9 mm (2.9 in), 14 January 2004 Jan Feb: 47.5 mm (1.9 in), 12 February 2005 Feb Mar: 26.9 mm (1.1 in), 3 March 1983 Mar Apr: 11.4 mm (0.4 in), 21 April 1981 Apr May: 2.8 mm (0.11 in), 17 May 1979 May Jun: 46.5 mm (1.8 in), 27 June 2009 Jun Jul: 69.9 mm (2.8 in), 17 July 1999 Jul Aug: 185.9 mm (7.3 in), 23 August 2000 Aug Sep: 133.4 mm (5.3 in), 30 September 2001 Sep Oct: 86.9 mm (3.4 in), 8 October 2000 Oct Nov: 48.8 mm (1.9 in), 12 November 2011 Nov Dec: 47.0 mm (1.9 in), 8 December 1988 Dec
The wettest day on record for each calendar month at Porfirio Diaz. The most was 185.9 mm (7.3 in) on 23 August 2000.
Record daily precipitation for each month at Porfirio Diaz
MonthRecord daily precipitation (mm)Date
Jan74.9 mm (2.9 in)14 January 2004
Feb47.5 mm (1.9 in)12 February 2005
Mar26.9 mm (1.1 in)3 March 1983
Apr11.4 mm (0.4 in)21 April 1981
May2.8 mm (0.11 in)17 May 1979
Jun46.5 mm (1.8 in)27 June 2009
Jul69.9 mm (2.8 in)17 July 1999
Aug185.9 mm (7.3 in)23 August 2000
Sep133.4 mm (5.3 in)30 September 2001
Oct86.9 mm (3.4 in)8 October 2000
Nov48.8 mm (1.9 in)12 November 2011
Dec47.0 mm (1.9 in)8 December 1988

Period of Record Coverage

1969 to 2011
Days with data per year at Porfirio Diaz 43 years of record at Porfirio Diaz, 1969 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1969, 1971, 1974, 1975, 1976. 1969: 154 of 365 days1970: 362 of 365 days1971: 245 of 365 days1972: 365 of 366 days1973: 365 of 365 days1974: 299 of 365 days1975: 324 of 365 days1976: 182 of 366 days1977: 362 of 365 days1978: 347 of 365 days1979: 334 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 365 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 363 of 365 days1996: 365 of 366 days1997: 363 of 365 days1998: 363 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 364 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 363 of 365 days2011: 365 of 365 days19701980199020002010
43 years of record at Porfirio Diaz, 1969 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1969, 1971, 1974, 1975, 1976.
Days with data per year at Porfirio Diaz
YearDays with dataShare of yearComplete
196915442%No
197036299%Yes
197124567%No
1972365100%Yes
1973365100%Yes
197429982%No
197532489%No
197618250%No
197736299%Yes
197834795%Yes
197933492%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984365100%Yes
1985365100%Yes
1986365100%Yes
1987364100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992365100%Yes
1993365100%Yes
1994365100%Yes
199536399%Yes
1996365100%Yes
199736399%Yes
199836399%Yes
1999364100%Yes
2000366100%Yes
2001365100%Yes
2002364100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007364100%Yes
2008366100%Yes
2009365100%Yes
201036399%Yes
2011365100%Yes

Latest Records

20
Latest records at Porfirio Diaz
DateStationRecordValueBeat old record byOld record stoodSignificance
12 December 2011Porfirio Diaz, MXdaily low max (Tie)18.9 C (66.0 F)tie13 years2 of 100 (Routine)
2 December 2011Porfirio Diaz, MXdaily low max17.8 C (64.0 F)2.8 C (5.0 F)28 years19 of 100 (Routine)
1 December 2011Porfirio Diaz, MXdaily rain6.9 mm (0.27 in)1.1 mm (0.04 in)28 years12 of 100 (Routine)
23 November 2011Porfirio Diaz, MXdaily rain25.9 mm (1.0 in)20.8 mm (0.8 in)26 years38 of 100 (Notable)
13 November 2011Porfirio Diaz, MXdaily low max22.8 C (73.0 F)2.2 C (4.0 F)32 years18 of 100 (Routine)
12 November 2011Porfirio Diaz, MXmonthly rain48.8 mm (1.9 in)6.4 mm (0.25 in)18 years27 of 100 (Routine)
12 November 2011Porfirio Diaz, MXdaily low max (Tie)25.0 C (77.0 F)tie17 years2 of 100 (Routine)
9 November 2011Porfirio Diaz, MXdaily low min (Tie)5.6 C (42.1 F)tie37 years3 of 100 (Routine)
7 November 2011Porfirio Diaz, MXdaily low min (Tie)8.9 C (48.0 F)tie37 years3 of 100 (Routine)
27 October 2011Porfirio Diaz, MXdaily high max (Tie)40.0 C (104.0 F)tie24 years2 of 100 (Routine)
18 October 2011Porfirio Diaz, MXdaily high max41.7 C (107.1 F)1.1 C (2.0 F)20 years13 of 100 (Routine)
17 October 2011Porfirio Diaz, MXdaily high max (Tie)41.7 C (107.1 F)tie16 years2 of 100 (Routine)
15 October 2011Porfirio Diaz, MXdaily high max43.9 C (111.0 F)3.3 C (5.9 F)38 years24 of 100 (Routine)
10 October 2011Porfirio Diaz, MXdaily low min (Tie)10.6 C (51.1 F)tie40 years4 of 100 (Routine)
9 October 2011Porfirio Diaz, MXdaily low min (Tie)10.6 C (51.1 F)tie16 years2 of 100 (Routine)
3 October 2011Porfirio Diaz, MXdaily high max (Tie)41.7 C (107.1 F)tie22 years2 of 100 (Routine)
1 October 2011Porfirio Diaz, MXdaily high max (Tie)41.7 C (107.1 F)tie17 years2 of 100 (Routine)
30 September 2011Porfirio Diaz, MXdaily high max43.3 C (109.9 F)1.6 C (2.9 F)24 years15 of 100 (Routine)
23 September 2011Porfirio Diaz, MXdaily high max45.0 C (113.0 F)0.6 C (1.1 F)9 years7 of 100 (Routine)
22 September 2011Porfirio Diaz, MXmonthly high max (Tie)45.6 C (114.1 F)tie29 years5 of 100 (Routine)

Climate Trend

36 complete years, 1970 to 2011
Annual mean temperature at Porfirio Diaz as warming stripes, 1970 to 2011 One stripe for each of 36 complete years at Porfirio Diaz, 1970 to 2011. Blue stripes are years cooler than the station's own mean of 24.5 C (76.1 F); red stripes are warmer. The coolest year was 1973, at 20.8 C (69.5 F), and the warmest was 1980, at 26.2 C (79.2 F). The strongest colour marks a difference of 3.8 C (6.8 F). 1970: 24.3 C, -0.2 C from the station mean1972: 23.2 C, -1.3 C from the station mean1973: 20.8 C, -3.7 C from the station mean1977: 23.1 C, -1.4 C from the station mean1980: 26.2 C, +1.7 C from the station mean1981: 25.8 C, +1.3 C from the station mean1982: 25.4 C, +0.9 C from the station mean1983: 25.3 C, +0.8 C from the station mean1984: 25.3 C, +0.8 C from the station mean1985: 25.2 C, +0.6 C from the station mean1986: 26.1 C, +1.6 C from the station mean1987: 25.2 C, +0.7 C from the station mean1988: 25.3 C, +0.8 C from the station mean1989: 25.4 C, +0.8 C from the station mean1990: 25.5 C, +1.0 C from the station mean1991: 25.1 C, +0.6 C from the station mean1992: 25.3 C, +0.7 C from the station mean1993: 25.2 C, +0.7 C from the station mean1994: 25.0 C, +0.5 C from the station mean1995: 23.8 C, -0.7 C from the station mean1996: 24.3 C, -0.2 C from the station mean1997: 24.0 C, -0.5 C from the station mean1998: 23.5 C, -1.0 C from the station mean1999: 23.6 C, -0.9 C from the station mean2000: 23.9 C, -0.6 C from the station mean2001: 24.3 C, -0.2 C from the station mean2002: 24.5 C, 0.0 C from the station mean2003: 24.6 C, 0.0 C from the station mean2004: 24.4 C, -0.1 C from the station mean2005: 24.2 C, -0.3 C from the station mean2006: 24.6 C, +0.1 C from the station mean2007: 24.1 C, -0.5 C from the station mean2008: 23.7 C, -0.8 C from the station mean2009: 24.0 C, -0.5 C from the station mean2010: 23.8 C, -0.7 C from the station mean2011: 24.4 C, -0.1 C from the station mean197019751980198519901995200020052010
One stripe for each of 36 complete years at Porfirio Diaz, 1970 to 2011. Blue stripes are years cooler than the station's own mean of 24.5 C (76.1 F); red stripes are warmer. The coolest year was 1973, at 20.8 C (69.5 F), and the warmest was 1980, at 26.2 C (79.2 F). The strongest colour marks a difference of 3.8 C (6.8 F).
Annual mean temperature at Porfirio Diaz as warming stripes, 1970 to 2011
YearAnnual mean temperatureDifference from the station mean
197024.3 C-0.23 C
197223.2 C-1.31 C
197320.8 C-3.70 C
197723.1 C-1.40 C
198026.2 C+1.72 C
198125.8 C+1.28 C
198225.4 C+0.91 C
198325.3 C+0.76 C
198425.3 C+0.83 C
198525.2 C+0.65 C
198626.1 C+1.63 C
198725.2 C+0.68 C
198825.3 C+0.76 C
198925.4 C+0.84 C
199025.5 C+1.02 C
199125.1 C+0.58 C
199225.3 C+0.75 C
199325.2 C+0.73 C
199425.0 C+0.53 C
199523.8 C-0.70 C
199624.3 C-0.20 C
199724.0 C-0.54 C
199823.5 C-0.98 C
199923.6 C-0.88 C
200023.9 C-0.59 C
200124.3 C-0.20 C
200224.5 C-0.02 C
200324.6 C+0.04 C
200424.4 C-0.11 C
200524.2 C-0.29 C
200624.6 C+0.06 C
200724.1 C-0.45 C
200823.7 C-0.80 C
200924.0 C-0.50 C
201023.8 C-0.73 C
201124.4 C-0.12 C

The fitted trend in annual mean temperature here over 1970 to 2011 is -0.1 C (-0.4 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.7 to 0.4) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Porfirio Diaz
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.1 C (-0.4 to 0.2) per decade-0.1 F (-0.7 to 0.4) per decade1970 to 201136Not clearly different from zero
Mean daily maximum0.2 C (-0.3 to 0.6) per decade0.3 F (-0.5 to 1.1) per decade1970 to 201136Not clearly different from zero
Mean daily minimum-0.3 C (-0.7 to 0.2) per decade-0.5 F (-1.3 to 0.3) per decade1970 to 201136Not 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

1969 to 2011
Yearly extremes at Porfirio Diaz: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)47.8 C (118.0 F)200745.0 C (113.0 F)43
Coldest night (TNn)-2.2 C (28.0 F)19732.2 C (36.0 F)43
Wettest day (Rx1day)185.9 mm (7.3 in)200061.0 mm (2.4 in)43
Wettest five days (Rx5day)235.5 mm (9.3 in)200083.3 mm (3.3 in)43
Longest dry spell (CDD)181 days2011112 days43

Hottest day (TXx)

Hottest day (TXx) at Porfirio Diaz by year The hottest day of the year at Porfirio Diaz, 1969 to 2011. The record is 47.8 C (118.0 F) in 2007, marked on the chart; the median year is 45.0 C (113.0 F). 37.54042.54547.55019701980199020002010Record: 47.8 C (118.0 F) in 2007
The hottest day of the year at Porfirio Diaz, 1969 to 2011. The record is 47.8 C (118.0 F) in 2007, marked on the chart; the median year is 45.0 C (113.0 F).
Hottest day (TXx) at Porfirio Diaz by year
YearHottest day (TXx)
196943.9 C (111.0 F)
197043.9 C (111.0 F)
197141.7 C (107.1 F)
197245.0 C (113.0 F)
197340.6 C (105.1 F)
197440.6 C (105.1 F)
197541.7 C (107.1 F)
197640.0 C (104.0 F)
197738.9 C (102.0 F)
197840.6 C (105.1 F)
197942.8 C (109.0 F)
198046.7 C (116.1 F)
198146.7 C (116.1 F)
198245.6 C (114.1 F)
198345.6 C (114.1 F)
198444.4 C (111.9 F)
198545.0 C (113.0 F)
198645.6 C (114.1 F)
198745.0 C (113.0 F)
198845.0 C (113.0 F)
198942.8 C (109.0 F)
199045.0 C (113.0 F)
199143.9 C (111.0 F)
199245.0 C (113.0 F)
199345.0 C (113.0 F)
199443.9 C (111.0 F)
199543.9 C (111.0 F)
199643.9 C (111.0 F)
199745.0 C (113.0 F)
199845.6 C (114.1 F)
199946.7 C (116.1 F)
200045.0 C (113.0 F)
200145.6 C (114.1 F)
200245.0 C (113.0 F)
200345.0 C (113.0 F)
200445.0 C (113.0 F)
200545.0 C (113.0 F)
200643.9 C (111.0 F)
200747.8 C (118.0 F)
200845.0 C (113.0 F)
200942.8 C (109.0 F)
201045.0 C (113.0 F)
201145.6 C (114.1 F)

Coldest night (TNn)

Coldest night (TNn) at Porfirio Diaz by year The coldest night of the year at Porfirio Diaz, 1969 to 2011. The record is -2.2 C (28.0 F) in 1973, marked on the chart; the median year is 2.2 C (36.0 F). -5051019701980199020002010Record: -2.2 C (28.0 F) in 1973
The coldest night of the year at Porfirio Diaz, 1969 to 2011. The record is -2.2 C (28.0 F) in 1973, marked on the chart; the median year is 2.2 C (36.0 F).
Coldest night (TNn) at Porfirio Diaz by year
YearColdest night (TNn)
19691.7 C (35.1 F)
19701.7 C (35.1 F)
19710.6 C (33.1 F)
19720.0 C (32.0 F)
1973-2.2 C (28.0 F)
19740.0 C (32.0 F)
19757.8 C (46.0 F)
197610.0 C (50.0 F)
19776.7 C (44.1 F)
19787.2 C (45.0 F)
19796.7 C (44.1 F)
19806.1 C (43.0 F)
19813.9 C (39.0 F)
19822.8 C (37.0 F)
19834.4 C (39.9 F)
19843.9 C (39.0 F)
19851.7 C (35.1 F)
19865.0 C (41.0 F)
19871.7 C (35.1 F)
1988-0.6 C (30.9 F)
19890.0 C (32.0 F)
19903.9 C (39.0 F)
19915.0 C (41.0 F)
19922.8 C (37.0 F)
19935.0 C (41.0 F)
19942.2 C (36.0 F)
19953.3 C (37.9 F)
19963.3 C (37.9 F)
19972.8 C (37.0 F)
19982.8 C (37.0 F)
19991.7 C (35.1 F)
20001.1 C (34.0 F)
20011.1 C (34.0 F)
20021.1 C (34.0 F)
20032.2 C (36.0 F)
20041.7 C (35.1 F)
20055.0 C (41.0 F)
20060.6 C (33.1 F)
20070.6 C (33.1 F)
20082.2 C (36.0 F)
20091.7 C (35.1 F)
20103.9 C (39.0 F)
20110.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Porfirio Diaz by year The wettest day of the year at Porfirio Diaz, 1969 to 2011. The record is 185.9 mm (7.3 in) in 2000, marked on the chart; the median year is 61.0 mm (2.4 in). 05010015020019701980199020002010Record: 185.9 mm (7.3 in) in 2000
The wettest day of the year at Porfirio Diaz, 1969 to 2011. The record is 185.9 mm (7.3 in) in 2000, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest day (Rx1day) at Porfirio Diaz by year
YearWettest day (Rx1day)
196937.8 mm (1.5 in)
197063.8 mm (2.5 in)
197148.8 mm (1.9 in)
197252.8 mm (2.1 in)
197332.3 mm (1.3 in)
197446.0 mm (1.8 in)
197540.9 mm (1.6 in)
197649.8 mm (2.0 in)
197771.4 mm (2.8 in)
197841.9 mm (1.6 in)
197955.6 mm (2.2 in)
198035.8 mm (1.4 in)
198161.0 mm (2.4 in)
198238.9 mm (1.5 in)
198394.0 mm (3.7 in)
1984125.2 mm (4.9 in)
198581.8 mm (3.2 in)
198650.3 mm (2.0 in)
198762.5 mm (2.5 in)
198847.5 mm (1.9 in)
198965.3 mm (2.6 in)
199068.3 mm (2.7 in)
199176.5 mm (3.0 in)
199262.0 mm (2.4 in)
199342.4 mm (1.7 in)
199477.0 mm (3.0 in)
199565.8 mm (2.6 in)
199665.8 mm (2.6 in)
199758.9 mm (2.3 in)
199897.8 mm (3.9 in)
199969.9 mm (2.8 in)
2000185.9 mm (7.3 in)
2001133.4 mm (5.3 in)
200253.6 mm (2.1 in)
200356.4 mm (2.2 in)
200499.3 mm (3.9 in)
200547.8 mm (1.9 in)
200633.8 mm (1.3 in)
2007118.9 mm (4.7 in)
200882.3 mm (3.2 in)
200986.4 mm (3.4 in)
201044.5 mm (1.8 in)
201148.8 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Porfirio Diaz by year The wettest five days of the year at Porfirio Diaz, 1969 to 2011. The record is 235.5 mm (9.3 in) in 2000, marked on the chart; the median year is 83.3 mm (3.3 in). 010020030019701980199020002010Record: 235.5 mm (9.3 in) in 2000
The wettest five days of the year at Porfirio Diaz, 1969 to 2011. The record is 235.5 mm (9.3 in) in 2000, marked on the chart; the median year is 83.3 mm (3.3 in).
Wettest five days (Rx5day) at Porfirio Diaz by year
YearWettest five days (Rx5day)
196938.7 mm (1.5 in)
197067.9 mm (2.7 in)
197183.3 mm (3.3 in)
197293.7 mm (3.7 in)
197335.1 mm (1.4 in)
197480.9 mm (3.2 in)
197542.7 mm (1.7 in)
197649.8 mm (2.0 in)
1977104.5 mm (4.1 in)
197850.5 mm (2.0 in)
197961.4 mm (2.4 in)
198049.5 mm (1.9 in)
1981111.8 mm (4.4 in)
198248.1 mm (1.9 in)
1983186.2 mm (7.3 in)
1984232.5 mm (9.2 in)
198581.8 mm (3.2 in)
198653.4 mm (2.1 in)
198792.8 mm (3.7 in)
198879.3 mm (3.1 in)
198974.9 mm (2.9 in)
1990152.1 mm (6.0 in)
199199.8 mm (3.9 in)
1992107.8 mm (4.2 in)
199345.0 mm (1.8 in)
1994143.4 mm (5.6 in)
1995126.3 mm (5.0 in)
199675.7 mm (3.0 in)
199784.2 mm (3.3 in)
1998150.9 mm (5.9 in)
199993.0 mm (3.7 in)
2000235.5 mm (9.3 in)
2001197.9 mm (7.8 in)
2002108.4 mm (4.3 in)
200368.6 mm (2.7 in)
2004123.7 mm (4.9 in)
200581.1 mm (3.2 in)
200658.6 mm (2.3 in)
2007136.2 mm (5.4 in)
200898.6 mm (3.9 in)
2009121.2 mm (4.8 in)
201053.4 mm (2.1 in)
201173.4 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Porfirio Diaz by year The longest dry spell of the year at Porfirio Diaz, 1969 to 2011. The record is 181 days in 2011, marked on the chart; the median year is 112 days. 5010015020019701980199020002010Record: 181 days in 2011
The longest dry spell of the year at Porfirio Diaz, 1969 to 2011. The record is 181 days in 2011, marked on the chart; the median year is 112 days.
Longest dry spell (CDD) at Porfirio Diaz by year
YearLongest dry spell (CDD)
196964 days
1970117 days
197161 days
1972144 days
1973127 days
1974179 days
1975109 days
1976111 days
197795 days
1978106 days
1979112 days
1980140 days
198182 days
1982173 days
198390 days
1984136 days
198571 days
1986139 days
198793 days
1988121 days
1989137 days
1990109 days
1991122 days
1992100 days
199377 days
1994166 days
1995141 days
199696 days
199770 days
1998112 days
1999100 days
2000110 days
2001139 days
2002153 days
200397 days
200494 days
2005150 days
2006173 days
2007141 days
2008162 days
2009100 days
2010155 days
2011181 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

39 years, 1970 to 2011

A day with at least 61.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 191.8 mm (7.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Porfirio Diaz: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years61.2 mm (2.4 in)
5 years86.6 mm (3.4 in)
10 years106.8 mm (4.2 in)
25 years136.6 mm (5.4 in)
50 years162.5 mm (6.4 in)Longer than the 39 years of record
100 years191.8 mm (7.6 in)Longer than the 39 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, 39 years of values from 1970 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: 185.9 mm (7.3 in) in 2000; 133.4 mm (5.3 in) in 2001; 125.2 mm (4.9 in) in 1984.

Download the Data

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