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Zihualtepec Weather Records (MXN00020017)

Record envelope, standing records and threshold days for Zihualtepec (MXN00020017), Mexico, with 52 years of record.

Key Facts for Zihualtepec

  • Zihualtepec (MXN00020017) is a weather station in Mexico at 17.45 latitude and -95.37 longitude, 82 m (269 ft) above sea level.
  • The station reports from 1959 to 2010, 52 years of record.
  • 1,464 records set at Zihualtepec still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Zihualtepec set a daily record low minimum temperature of 10.0 C (50.0 F) on 29 December 2010.

About the Station

  • Location: Mexico, 17.45 latitude, -95.37 longitude.
  • Elevation: 82 m (269 ft).
  • Period of record: 1959 to 2010, 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 Zihualtepec, with 2026 drawn through them The band shows the record high and record low for each calendar day at Zihualtepec. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Zihualtepec. 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 Zihualtepec, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan36.7 C (98.1 F)7.8 C (46.0 F)n/an/a
Feb38.9 C (102.0 F)8.3 C (46.9 F)n/an/a
Mar40.6 C (105.1 F)10.0 C (50.0 F)n/an/a
Apr43.9 C (111.0 F)12.2 C (54.0 F)n/an/a
May45.0 C (113.0 F)13.9 C (57.0 F)n/an/a
Jun41.7 C (107.1 F)15.6 C (60.1 F)n/an/a
Jul38.9 C (102.0 F)17.8 C (64.0 F)n/an/a
Aug40.0 C (104.0 F)17.8 C (64.0 F)n/an/a
Sep38.9 C (102.0 F)15.6 C (60.1 F)n/an/a
Oct38.9 C (102.0 F)12.2 C (54.0 F)n/an/a
Nov35.6 C (96.1 F)10.0 C (50.0 F)n/an/a
Dec35.6 C (96.1 F)6.7 C (44.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Zihualtepec by the year they were set 1,464 records at Zihualtepec still stand. 1959 holds the most, with 132. 0501001501959: 1321961: 721962: 241963: 431964: 471965: 361966: 321967: 391968: 251969: 271970: 441971: 321972: 421973: 291974: 241975: 181976: 231977: 351978: 151979: 181980: 291981: 141982: 141983: 191984: 261991: 241992: 491993: 331995: 411996: 381997: 281998: 72000: 62001: 132002: 242003: 202004: 162005: 242006: 172007: 362008: 782009: 492010: 102195919651970197519801991199720032008
1,464 records at Zihualtepec still stand. 1959 holds the most, with 132.
Standing records at Zihualtepec by the year they were set
Year setStanding records
1959132
196172
196224
196343
196447
196536
196632
196739
196825
196927
197044
197132
197242
197329
197424
197518
197623
197735
197815
197918
198029
198114
198214
198319
198426
199124
199249
199333
199541
199638
199728
19987
20006
200113
200224
200320
200416
200524
200617
200736
200878
200949
2010102

All-Time Record Progression

4 new records
When Zihualtepec set new all-time records 4 all-time records were set at Zihualtepec between 11 May 2008 and 22 August 2010. Each dot is a new record. Record high maximum temperatureRecord low maximum temperatureRecord daily precipitation11 May 2008: Record high maximum temperature 44.4 C (111.9 F)14 May 2008: Record high maximum temperature 45.0 C (113.0 F)9 January 2010: Record low maximum temperature 10.0 C (50.0 F)22 August 2010: Record daily precipitation 268.5 mm (10.6 in)2010
4 all-time records were set at Zihualtepec between 11 May 2008 and 22 August 2010. Each dot is a new record.
When Zihualtepec set new all-time records
DateKindDetail
2008-05-11Record high maximum temperatureRecord high maximum temperature 44.4 C (111.9 F)
2008-05-14Record high maximum temperatureRecord high maximum temperature 45.0 C (113.0 F)
2010-01-09Record low maximum temperatureRecord low maximum temperature 10.0 C (50.0 F)
2010-08-22Record daily precipitationRecord daily precipitation 268.5 mm (10.6 in)

Wettest Day of Each Month

Aug: 268.5 mm (10.6 in)
Record daily precipitation for each month at Zihualtepec The wettest day on record for each calendar month at Zihualtepec. The most was 268.5 mm (10.6 in) on 22 August 2010. 0100200300 Jan: 38.4 mm (1.5 in), 12 January 1981 Jan Feb: 67.8 mm (2.7 in), 11 February 1983 Feb Mar: 101.9 mm (4.0 in), 20 March 2000 Mar Apr: 79.8 mm (3.1 in), 22 April 1979 Apr May: 101.9 mm (4.0 in), 21 May 1974 May Jun: 174.8 mm (6.9 in), 19 June 1984 Jun Jul: 199.9 mm (7.9 in), 2 July 1969 Jul Aug: 268.5 mm (10.6 in), 22 August 2010 Aug Sep: 235.0 mm (9.3 in), 27 September 2010 Sep Oct: 197.4 mm (7.8 in), 4 October 1971 Oct Nov: 121.2 mm (4.8 in), 9 November 1983 Nov Dec: 85.9 mm (3.4 in), 10 December 1971 Dec
The wettest day on record for each calendar month at Zihualtepec. The most was 268.5 mm (10.6 in) on 22 August 2010.
Record daily precipitation for each month at Zihualtepec
MonthRecord daily precipitation (mm)Date
Jan38.4 mm (1.5 in)12 January 1981
Feb67.8 mm (2.7 in)11 February 1983
Mar101.9 mm (4.0 in)20 March 2000
Apr79.8 mm (3.1 in)22 April 1979
May101.9 mm (4.0 in)21 May 1974
Jun174.8 mm (6.9 in)19 June 1984
Jul199.9 mm (7.9 in)2 July 1969
Aug268.5 mm (10.6 in)22 August 2010
Sep235.0 mm (9.3 in)27 September 2010
Oct197.4 mm (7.8 in)4 October 1971
Nov121.2 mm (4.8 in)9 November 1983
Dec85.9 mm (3.4 in)10 December 1971

Period of Record Coverage

1959 to 2010
Days with data per year at Zihualtepec 43 years of record at Zihualtepec, 1959 to 2010. 4 years have data for under 90 percent of days and are left out of rankings: 1991, 1998, 2008, 2009. 1959: 364 of 365 days1961: 365 of 365 days1962: 364 of 365 days1963: 364 of 365 days1964: 366 of 366 days1965: 334 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 364 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 364 of 365 days1980: 364 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 335 of 366 days1991: 272 of 365 days1992: 366 of 366 days1993: 330 of 365 days1995: 363 of 365 days1996: 365 of 366 days1997: 363 of 365 days1998: 90 of 365 days2000: 351 of 366 days2001: 364 of 365 days2002: 364 of 365 days2003: 364 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 362 of 365 days2008: 304 of 366 days2009: 327 of 365 days2010: 364 of 365 days1970198020002010
43 years of record at Zihualtepec, 1959 to 2010. 4 years have data for under 90 percent of days and are left out of rankings: 1991, 1998, 2008, 2009.
Days with data per year at Zihualtepec
YearDays with dataShare of yearComplete
1959364100%Yes
1961365100%Yes
1962364100%Yes
1963364100%Yes
1964366100%Yes
196533492%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973364100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979364100%Yes
198036499%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
198433592%Yes
199127275%No
1992366100%Yes
199333090%Yes
199536399%Yes
1996365100%Yes
199736399%Yes
19989025%No
200035196%Yes
2001364100%Yes
2002364100%Yes
2003364100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
200736299%Yes
200830483%No
200932790%No
2010364100%Yes

Latest Records

20
Latest records at Zihualtepec
DateStationRecordValueBeat old record byOld record stoodSignificance
29 December 2010Zihualtepec, MXdaily low min10.0 C (50.0 F)1.1 C (2.0 F)27 years17 of 100 (Routine)
26 December 2010Zihualtepec, MXmonthly low max (Tie)15.6 C (60.1 F)tie0 years3 of 100 (Routine)
17 December 2010Zihualtepec, MXdaily low min10.0 C (50.0 F)0.6 C (1.1 F)12 years10 of 100 (Routine)
16 December 2010Zihualtepec, MXdaily low min (Tie)8.9 C (48.0 F)tie12 years2 of 100 (Routine)
13 December 2010Zihualtepec, MXdaily low max16.7 C (62.1 F)1.1 C (2.0 F)12 years11 of 100 (Routine)
13 December 2010Zihualtepec, MXdaily low min (Tie)11.7 C (53.1 F)tie44 years4 of 100 (Routine)
12 December 2010Zihualtepec, MXdaily low min10.0 C (50.0 F)1.7 C (3.1 F)32 years20 of 100 (Routine)
11 December 2010Zihualtepec, MXdaily low min10.0 C (50.0 F)1.7 C (3.1 F)32 years20 of 100 (Routine)
10 December 2010Zihualtepec, MXdaily low min10.0 C (50.0 F)0.6 C (1.1 F)32 years16 of 100 (Routine)
9 December 2010Zihualtepec, MXdaily low min11.7 C (53.1 F)1.1 C (2.0 F)40 years21 of 100 (Routine)
8 December 2010Zihualtepec, MXdaily low min (Tie)12.8 C (55.0 F)tie33 years3 of 100 (Routine)
7 December 2010Zihualtepec, MXdaily low min (Tie)12.8 C (55.0 F)tie44 years4 of 100 (Routine)
6 December 2010Zihualtepec, MXdaily low min (Tie)12.8 C (55.0 F)tie36 years3 of 100 (Routine)
5 December 2010Zihualtepec, MXdaily low max (Tie)18.9 C (66.0 F)tie0 years1 of 100 (Routine)
4 December 2010Zihualtepec, MXdaily low min12.8 C (55.0 F)1.1 C (2.0 F)40 years21 of 100 (Routine)
4 December 2010Zihualtepec, MXdaily low max18.9 C (66.0 F)1.1 C (2.0 F)4 years9 of 100 (Routine)
3 December 2010Zihualtepec, MXdaily low max (Tie)20.0 C (68.0 F)tie4 years1 of 100 (Routine)
2 December 2010Zihualtepec, MXdaily low max20.0 C (68.0 F)2.8 C (5.0 F)36 years23 of 100 (Routine)
2 December 2010Zihualtepec, MXdaily rain19.8 mm (0.8 in)1.5 mm (0.06 in)43 years18 of 100 (Routine)
1 December 2010Zihualtepec, MXmonthly low max15.6 C (60.1 F)0.5 C (0.9 F)46 years30 of 100 (Routine)

Climate Trend

35 complete years, 1959 to 2010
Annual mean temperature at Zihualtepec as warming stripes, 1959 to 2010 One stripe for each of 35 complete years at Zihualtepec, 1959 to 2010. 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 2010, at 22.2 C (72.0 F), and the warmest was 2007, at 26.1 C (78.9 F). The strongest colour marks a difference of 2.3 C (4.1 F). 1959: 25.8 C, +1.3 C from the station mean1961: 25.4 C, +0.9 C from the station mean1962: 25.2 C, +0.7 C from the station mean1963: 24.9 C, +0.4 C from the station mean1964: 25.2 C, +0.7 C from the station mean1966: 24.0 C, -0.5 C from the station mean1967: 24.7 C, +0.2 C from the station mean1968: 24.6 C, +0.1 C from the station mean1969: 25.6 C, +1.1 C from the station mean1970: 24.9 C, +0.4 C from the station mean1971: 25.0 C, +0.5 C from the station mean1972: 25.7 C, +1.2 C from the station mean1973: 25.4 C, +0.8 C from the station mean1974: 25.1 C, +0.6 C from the station mean1975: 25.2 C, +0.7 C from the station mean1976: 25.0 C, +0.5 C from the station mean1977: 25.0 C, +0.5 C from the station mean1978: 24.4 C, -0.1 C from the station mean1979: 24.7 C, +0.2 C from the station mean1980: 24.8 C, +0.3 C from the station mean1981: 24.8 C, +0.3 C from the station mean1982: 25.4 C, +0.9 C from the station mean1983: 25.5 C, +1.0 C from the station mean1995: 22.9 C, -1.6 C from the station mean1996: 22.5 C, -2.0 C from the station mean1997: 22.7 C, -1.8 C from the station mean2000: 23.9 C, -0.7 C from the station mean2001: 23.6 C, -0.9 C from the station mean2002: 24.2 C, -0.3 C from the station mean2003: 23.0 C, -1.5 C from the station mean2004: 23.3 C, -1.2 C from the station mean2005: 23.8 C, -0.7 C from the station mean2006: 23.5 C, -1.1 C from the station mean2007: 26.1 C, +1.6 C from the station mean2010: 22.2 C, -2.3 C from the station mean19591965197019751980198519901995200020052010
One stripe for each of 35 complete years at Zihualtepec, 1959 to 2010. 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 2010, at 22.2 C (72.0 F), and the warmest was 2007, at 26.1 C (78.9 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Zihualtepec as warming stripes, 1959 to 2010
YearAnnual mean temperatureDifference from the station mean
195925.8 C+1.33 C
196125.4 C+0.90 C
196225.2 C+0.73 C
196324.9 C+0.41 C
196425.2 C+0.65 C
196624.0 C-0.49 C
196724.7 C+0.15 C
196824.6 C+0.08 C
196925.6 C+1.06 C
197024.9 C+0.41 C
197125.0 C+0.52 C
197225.7 C+1.15 C
197325.4 C+0.84 C
197425.1 C+0.55 C
197525.2 C+0.71 C
197625.0 C+0.46 C
197725.0 C+0.45 C
197824.4 C-0.11 C
197924.7 C+0.19 C
198024.8 C+0.25 C
198124.8 C+0.32 C
198225.4 C+0.86 C
198325.5 C+0.95 C
199522.9 C-1.59 C
199622.5 C-2.03 C
199722.7 C-1.80 C
200023.9 C-0.66 C
200123.6 C-0.89 C
200224.2 C-0.33 C
200323.0 C-1.51 C
200423.3 C-1.21 C
200523.8 C-0.71 C
200623.5 C-1.06 C
200726.1 C+1.57 C
201022.2 C-2.30 C

The annual mean temperature here has fallen by 0.4 C (0.3 to 0.6) per decade over 1959 to 2010. In Fahrenheit: 0.8 F (0.5 to 1.1) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Zihualtepec
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.4 C (-0.6 to -0.3) per decade-0.8 F (-1.1 to -0.5) per decade1959 to 201035Fall
Mean daily maximum-0.8 C (-1.2 to -0.5) per decade-1.5 F (-2.1 to -0.9) per decade1959 to 201035Fall
Mean daily minimum-0.02 C (-0.20 to 0.15) per decade-0.04 F (-0.35 to 0.28) per decade1959 to 201035Not 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

1959 to 2010
Yearly extremes at Zihualtepec: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.0 C (113.0 F)200840.0 C (104.0 F)43
Coldest night (TNn)6.7 C (44.1 F)196310.0 C (50.0 F)43
Wettest day (Rx1day)268.5 mm (10.6 in)2010120.4 mm (4.7 in)43
Wettest five days (Rx5day)613.7 mm (24.2 in)2010229.2 mm (9.0 in)43
Longest dry spell (CDD)74 days198331 days43

Hottest day (TXx)

Hottest day (TXx) at Zihualtepec by year The hottest day of the year at Zihualtepec, 1959 to 2010. The record is 45.0 C (113.0 F) in 2008, marked on the chart; the median year is 40.0 C (104.0 F). 30354045196019701980199020002010Record: 45.0 C (113.0 F) in 2008
The hottest day of the year at Zihualtepec, 1959 to 2010. The record is 45.0 C (113.0 F) in 2008, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Zihualtepec by year
YearHottest day (TXx)
195940.0 C (104.0 F)
196141.1 C (106.0 F)
196240.0 C (104.0 F)
196340.0 C (104.0 F)
196441.7 C (107.1 F)
196541.1 C (106.0 F)
196640.0 C (104.0 F)
196743.9 C (111.0 F)
196840.0 C (104.0 F)
196941.7 C (107.1 F)
197041.7 C (107.1 F)
197140.0 C (104.0 F)
197241.7 C (107.1 F)
197340.0 C (104.0 F)
197440.6 C (105.1 F)
197540.0 C (104.0 F)
197638.9 C (102.0 F)
197740.0 C (104.0 F)
197840.0 C (104.0 F)
197938.9 C (102.0 F)
198041.7 C (107.1 F)
198137.8 C (100.0 F)
198241.1 C (106.0 F)
198341.7 C (107.1 F)
198442.2 C (108.0 F)
199138.9 C (102.0 F)
199231.7 C (89.1 F)
199335.0 C (95.0 F)
199538.9 C (102.0 F)
199635.0 C (95.0 F)
199738.9 C (102.0 F)
199830.6 C (87.1 F)
200037.8 C (100.0 F)
200138.9 C (102.0 F)
200237.8 C (100.0 F)
200338.9 C (102.0 F)
200433.9 C (93.0 F)
200538.9 C (102.0 F)
200635.0 C (95.0 F)
200741.7 C (107.1 F)
200845.0 C (113.0 F)
200938.9 C (102.0 F)
201038.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Zihualtepec by year The coldest night of the year at Zihualtepec, 1959 to 2010. The record is 6.7 C (44.1 F) in 1963, marked on the chart; the median year is 10.0 C (50.0 F). 68101214196019701980199020002010Record: 6.7 C (44.1 F) in 1963
The coldest night of the year at Zihualtepec, 1959 to 2010. The record is 6.7 C (44.1 F) in 1963, marked on the chart; the median year is 10.0 C (50.0 F).
Coldest night (TNn) at Zihualtepec by year
YearColdest night (TNn)
195910.6 C (51.1 F)
196111.1 C (52.0 F)
196211.1 C (52.0 F)
19636.7 C (44.1 F)
196410.6 C (51.1 F)
196510.0 C (50.0 F)
19668.9 C (48.0 F)
19678.9 C (48.0 F)
19689.4 C (48.9 F)
196912.8 C (55.0 F)
197010.0 C (50.0 F)
19719.4 C (48.9 F)
197210.0 C (50.0 F)
197310.0 C (50.0 F)
197410.6 C (51.1 F)
197510.0 C (50.0 F)
197610.6 C (51.1 F)
197710.0 C (50.0 F)
197810.0 C (50.0 F)
197910.0 C (50.0 F)
198010.0 C (50.0 F)
19818.9 C (48.0 F)
198211.1 C (52.0 F)
198310.0 C (50.0 F)
198411.1 C (52.0 F)
199110.6 C (51.1 F)
199211.7 C (53.1 F)
199312.8 C (55.0 F)
199510.0 C (50.0 F)
19968.9 C (48.0 F)
19978.9 C (48.0 F)
199810.0 C (50.0 F)
200011.7 C (53.1 F)
200112.8 C (55.0 F)
200210.0 C (50.0 F)
200310.6 C (51.1 F)
200413.9 C (57.0 F)
200511.7 C (53.1 F)
200610.6 C (51.1 F)
200710.6 C (51.1 F)
200813.9 C (57.0 F)
200910.0 C (50.0 F)
20107.8 C (46.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Zihualtepec by year The wettest day of the year at Zihualtepec, 1959 to 2010. The record is 268.5 mm (10.6 in) in 2010, marked on the chart; the median year is 120.4 mm (4.7 in). 0100200300196019701980199020002010Record: 268.5 mm (10.6 in) in 2010
The wettest day of the year at Zihualtepec, 1959 to 2010. The record is 268.5 mm (10.6 in) in 2010, marked on the chart; the median year is 120.4 mm (4.7 in).
Wettest day (Rx1day) at Zihualtepec by year
YearWettest day (Rx1day)
1959148.3 mm (5.8 in)
196184.3 mm (3.3 in)
1962129.3 mm (5.1 in)
1963193.3 mm (7.6 in)
196480.0 mm (3.1 in)
1965115.3 mm (4.5 in)
196680.3 mm (3.2 in)
196794.0 mm (3.7 in)
1968130.8 mm (5.1 in)
1969199.9 mm (7.9 in)
1970148.3 mm (5.8 in)
1971197.4 mm (7.8 in)
197279.8 mm (3.1 in)
1973101.9 mm (4.0 in)
1974113.3 mm (4.5 in)
1975116.3 mm (4.6 in)
1976157.0 mm (6.2 in)
1977100.8 mm (4.0 in)
197889.9 mm (3.5 in)
1979101.9 mm (4.0 in)
1980159.8 mm (6.3 in)
1981132.8 mm (5.2 in)
1982199.9 mm (7.9 in)
1983121.2 mm (4.8 in)
1984183.1 mm (7.2 in)
1991144.3 mm (5.7 in)
1992112.8 mm (4.4 in)
1993119.9 mm (4.7 in)
1995141.7 mm (5.6 in)
199671.9 mm (2.8 in)
1997119.9 mm (4.7 in)
199819.8 mm (0.8 in)
2000158.8 mm (6.3 in)
2001123.4 mm (4.9 in)
200291.9 mm (3.6 in)
200394.5 mm (3.7 in)
2004116.3 mm (4.6 in)
2005188.0 mm (7.4 in)
2006179.8 mm (7.1 in)
2007108.5 mm (4.3 in)
2008133.4 mm (5.3 in)
2009120.4 mm (4.7 in)
2010268.5 mm (10.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Zihualtepec by year The wettest five days of the year at Zihualtepec, 1959 to 2010. The record is 613.7 mm (24.2 in) in 2010, marked on the chart; the median year is 229.2 mm (9.0 in). 0200400600800196019701980199020002010Record: 613.7 mm (24.2 in) in 2010
The wettest five days of the year at Zihualtepec, 1959 to 2010. The record is 613.7 mm (24.2 in) in 2010, marked on the chart; the median year is 229.2 mm (9.0 in).
Wettest five days (Rx5day) at Zihualtepec by year
YearWettest five days (Rx5day)
1959212.8 mm (8.4 in)
1961192.5 mm (7.6 in)
1962207.3 mm (8.2 in)
1963311.1 mm (12.2 in)
1964142.2 mm (5.6 in)
1965321.0 mm (12.6 in)
1966229.2 mm (9.0 in)
1967170.7 mm (6.7 in)
1968324.7 mm (12.8 in)
1969316.1 mm (12.4 in)
1970188.2 mm (7.4 in)
1971285.9 mm (11.3 in)
1972193.1 mm (7.6 in)
1973230.5 mm (9.1 in)
1974211.6 mm (8.3 in)
1975371.5 mm (14.6 in)
1976188.3 mm (7.4 in)
1977187.4 mm (7.4 in)
1978242.4 mm (9.5 in)
1979256.8 mm (10.1 in)
1980209.9 mm (8.3 in)
1981244.1 mm (9.6 in)
1982327.6 mm (12.9 in)
1983211.2 mm (8.3 in)
1984266.3 mm (10.5 in)
1991331.3 mm (13.0 in)
1992202.0 mm (8.0 in)
1993314.7 mm (12.4 in)
1995233.9 mm (9.2 in)
1996167.2 mm (6.6 in)
1997224.3 mm (8.8 in)
199827.7 mm (1.1 in)
2000257.3 mm (10.1 in)
2001242.6 mm (9.6 in)
2002180.4 mm (7.1 in)
2003195.9 mm (7.7 in)
2004152.2 mm (6.0 in)
2005282.8 mm (11.1 in)
2006367.1 mm (14.5 in)
2007185.2 mm (7.3 in)
2008309.0 mm (12.2 in)
2009176.3 mm (6.9 in)
2010613.7 mm (24.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Zihualtepec by year The longest dry spell of the year at Zihualtepec, 1959 to 2010. The record is 74 days in 1983, marked on the chart; the median year is 31 days. 020406080196019701980199020002010Record: 74 days in 1983
The longest dry spell of the year at Zihualtepec, 1959 to 2010. The record is 74 days in 1983, marked on the chart; the median year is 31 days.
Longest dry spell (CDD) at Zihualtepec by year
YearLongest dry spell (CDD)
195913 days
196130 days
196242 days
196344 days
196417 days
196537 days
196626 days
196725 days
196826 days
196926 days
197052 days
197135 days
197221 days
197336 days
197438 days
197564 days
197642 days
197755 days
197824 days
197926 days
198031 days
198122 days
198222 days
198374 days
198422 days
199165 days
199224 days
199328 days
199532 days
199646 days
199721 days
199844 days
200050 days
200124 days
200260 days
200334 days
200418 days
200533 days
200630 days
200727 days
200833 days
200955 days
201019 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

41 years, 1959 to 2010

A day with at least 123.6 mm (4.9 in) of rain is expected about once in 2 years. A day with at least 277.7 mm (10.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Zihualtepec: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years123.6 mm (4.9 in)
5 years161.8 mm (6.4 in)
10 years188.3 mm (7.4 in)
25 years223.2 mm (8.8 in)
50 years250.1 mm (9.8 in)Longer than the 41 years of record
100 years277.7 mm (10.9 in)Longer than the 41 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, 41 years of values from 1959 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: 268.5 mm (10.6 in) in 2010; 199.9 mm (7.9 in) in 1969; 199.9 mm (7.9 in) in 1982.

Download the Data

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