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Zacapoaxtla (Smn) Weather Records (MXN00021103)

Record envelope, standing records and threshold days for Zacapoaxtla (Smn) (MXN00021103), Mexico, with 66 years of record.

Key Facts for Zacapoaxtla (Smn)

  • Zacapoaxtla (Smn) (MXN00021103) is a weather station in Mexico at 19.87 latitude and -97.58 longitude, 1,828 m (5,997 ft) above sea level.
  • The station reports from 1944 to 2009, 66 years of record.
  • 1,464 records set at Zacapoaxtla (Smn) still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Zacapoaxtla (Smn) tied a daily record high minimum temperature of 11.7 C (53.1 F) on 27 December 2009.

About the Station

  • Location: Mexico, 19.87 latitude, -97.58 longitude.
  • Elevation: 1,828 m (5,997 ft).
  • Period of record: 1944 to 2009, 66 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 Zacapoaxtla (Smn), with 2026 drawn through them The band shows the record high and record low for each calendar day at Zacapoaxtla (Smn). 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 Zacapoaxtla (Smn). 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 Zacapoaxtla (Smn), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.9 C (93.0 F)-5.0 C (23.0 F)n/an/a
Feb31.7 C (89.1 F)-2.8 C (27.0 F)n/an/a
Mar33.9 C (93.0 F)0.0 C (32.0 F)n/an/a
Apr35.0 C (95.0 F)2.8 C (37.0 F)n/an/a
May35.0 C (95.0 F)4.4 C (39.9 F)n/an/a
Jun38.9 C (102.0 F)5.0 C (41.0 F)n/an/a
Jul35.0 C (95.0 F)5.0 C (41.0 F)n/an/a
Aug30.0 C (86.0 F)3.9 C (39.0 F)n/an/a
Sep28.9 C (84.0 F)2.8 C (37.0 F)n/an/a
Oct30.0 C (86.0 F)0.0 C (32.0 F)n/an/a
Nov30.6 C (87.1 F)-4.4 C (24.1 F)n/an/a
Dec31.7 C (89.1 F)-6.1 C (21.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Zacapoaxtla (Smn) by the year they were set 1,464 records at Zacapoaxtla (Smn) still stand. 1999 holds the most, with 91. 02550751001944: 171945: 711961: 31962: 171963: 211964: 301965: 261966: 351967: 321968: 171969: 391970: 441971: 271972: 261973: 501974: 391975: 451976: 471977: 621978: 461979: 631980: 381981: 251982: 281983: 451984: 421985: 201986: 221987: 391988: 261989: 191990: 161991: 241992: 151993: 181996: 51997: 431998: 151999: 912000: 272001: 202002: 242004: 282005: 152007: 182008: 252009: 191944196419691974197919841989199620012008
1,464 records at Zacapoaxtla (Smn) still stand. 1999 holds the most, with 91.
Standing records at Zacapoaxtla (Smn) by the year they were set
Year setStanding records
194417
194571
19613
196217
196321
196430
196526
196635
196732
196817
196939
197044
197127
197226
197350
197439
197545
197647
197762
197846
197963
198038
198125
198228
198345
198442
198520
198622
198739
198826
198919
199016
199124
199215
199318
19965
199743
199815
199991
200027
200120
200224
200428
200515
200718
200825
200919

All-Time Record Progression

3 new records
When Zacapoaxtla (Smn) set new all-time records 3 all-time records were set at Zacapoaxtla (Smn) between 30 December 1997 and 5 October 1999. Each dot is a new record. Record low minimum temperatureRecord daily precipitation30 December 1997: Record low minimum temperature -6.1 C (21.0 F)4 October 1999: Record daily precipitation 339.9 mm (13.4 in)5 October 1999: Record daily precipitation 342.9 mm (13.5 in)2000
3 all-time records were set at Zacapoaxtla (Smn) between 30 December 1997 and 5 October 1999. Each dot is a new record.
When Zacapoaxtla (Smn) set new all-time records
DateKindDetail
1997-12-30Record low minimum temperatureRecord low minimum temperature -6.1 C (21.0 F)
1999-10-04Record daily precipitationRecord daily precipitation 339.9 mm (13.4 in)
1999-10-05Record daily precipitationRecord daily precipitation 342.9 mm (13.5 in)

Wettest Day of Each Month

Oct: 342.9 mm (13.5 in)
Record daily precipitation for each month at Zacapoaxtla (Smn) The wettest day on record for each calendar month at Zacapoaxtla (Smn). The most was 342.9 mm (13.5 in) on 5 October 1999. 0100200300400 Jan: 59.9 mm (2.4 in), 25 January 1990 Jan Feb: 98.6 mm (3.9 in), 21 February 2009 Feb Mar: 58.9 mm (2.3 in), 11 March 1959 Mar Apr: 78.2 mm (3.1 in), 24 April 2001 Apr May: 142.0 mm (5.6 in), 8 May 1984 May Jun: 143.3 mm (5.6 in), 11 June 2000 Jun Jul: 154.9 mm (6.1 in), 16 July 1948 Jul Aug: 170.4 mm (6.7 in), 22 August 2007 Aug Sep: 332.0 mm (13.1 in), 11 September 1954 Sep Oct: 342.9 mm (13.5 in), 5 October 1999 Oct Nov: 159.8 mm (6.3 in), 23 November 1955 Nov Dec: 78.0 mm (3.1 in), 20 December 1947 Dec
The wettest day on record for each calendar month at Zacapoaxtla (Smn). The most was 342.9 mm (13.5 in) on 5 October 1999.
Record daily precipitation for each month at Zacapoaxtla (Smn)
MonthRecord daily precipitation (mm)Date
Jan59.9 mm (2.4 in)25 January 1990
Feb98.6 mm (3.9 in)21 February 2009
Mar58.9 mm (2.3 in)11 March 1959
Apr78.2 mm (3.1 in)24 April 2001
May142.0 mm (5.6 in)8 May 1984
Jun143.3 mm (5.6 in)11 June 2000
Jul154.9 mm (6.1 in)16 July 1948
Aug170.4 mm (6.7 in)22 August 2007
Sep332.0 mm (13.1 in)11 September 1954
Oct342.9 mm (13.5 in)5 October 1999
Nov159.8 mm (6.3 in)23 November 1955
Dec78.0 mm (3.1 in)20 December 1947

Period of Record Coverage

1944 to 2009
Days with data per year at Zacapoaxtla (Smn) 47 years of record at Zacapoaxtla (Smn), 1944 to 2009. 10 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1961, 1962, 1965, 1989, 1992, 1996 and others. 1944: 122 of 366 days1945: 108 of 365 days1961: 31 of 365 days1962: 180 of 365 days1963: 357 of 365 days1964: 358 of 366 days1965: 326 of 365 days1966: 355 of 365 days1967: 354 of 365 days1968: 354 of 366 days1969: 352 of 365 days1970: 348 of 365 days1971: 360 of 365 days1972: 359 of 366 days1973: 352 of 365 days1974: 359 of 365 days1975: 356 of 365 days1976: 355 of 366 days1977: 360 of 365 days1978: 358 of 365 days1979: 351 of 365 days1980: 356 of 366 days1981: 360 of 365 days1982: 360 of 365 days1983: 358 of 365 days1984: 362 of 366 days1985: 361 of 365 days1986: 361 of 365 days1987: 332 of 365 days1988: 363 of 366 days1989: 151 of 365 days1990: 365 of 365 days1991: 362 of 365 days1992: 270 of 366 days1993: 331 of 365 days1996: 84 of 366 days1997: 360 of 365 days1998: 236 of 365 days1999: 323 of 365 days2000: 357 of 366 days2001: 363 of 365 days2002: 362 of 365 days2004: 363 of 366 days2005: 363 of 365 days2007: 354 of 365 days2008: 365 of 366 days2009: 360 of 365 days1970198019902000
47 years of record at Zacapoaxtla (Smn), 1944 to 2009. 10 years have data for under 90 percent of days and are left out of rankings: 1944, 1945, 1961, 1962, 1965, 1989, 1992, 1996 and others.
Days with data per year at Zacapoaxtla (Smn)
YearDays with dataShare of yearComplete
194412233%No
194510830%No
1961318%No
196218049%No
196335798%Yes
196435898%Yes
196532689%No
196635597%Yes
196735497%Yes
196835497%Yes
196935296%Yes
197034895%Yes
197136099%Yes
197235998%Yes
197335296%Yes
197435998%Yes
197535698%Yes
197635597%Yes
197736099%Yes
197835898%Yes
197935196%Yes
198035697%Yes
198136099%Yes
198236099%Yes
198335898%Yes
198436299%Yes
198536199%Yes
198636199%Yes
198733291%Yes
198836399%Yes
198915141%No
1990365100%Yes
199136299%Yes
199227074%No
199333191%Yes
19968423%No
199736099%Yes
199823665%No
199932388%No
200035798%Yes
200136399%Yes
200236299%Yes
200436399%Yes
200536399%Yes
200735497%Yes
2008365100%Yes
200936099%Yes

Latest Records

20
Latest records at Zacapoaxtla (Smn)
DateStationRecordValueBeat old record byOld record stoodSignificance
27 December 2009Zacapoaxtla (Smn), MXdaily high min (Tie)11.7 C (53.1 F)tie28 years3 of 100 (Routine)
6 December 2009Zacapoaxtla (Smn), MXmonthly high min (Tie)16.7 C (62.1 F)tie21 years5 of 100 (Routine)
18 October 2009Zacapoaxtla (Smn), MXdaily low max (Tie)11.7 C (53.1 F)tie46 years4 of 100 (Routine)
17 October 2009Zacapoaxtla (Smn), MXdaily rain32.0 mm (1.3 in)3.0 mm (0.12 in)0 years6 of 100 (Routine)
27 September 2009Zacapoaxtla (Smn), MXdaily low max (Tie)16.7 C (62.1 F)tie40 years4 of 100 (Routine)
7 September 2009Zacapoaxtla (Smn), MXdaily high min (Tie)15.0 C (59.0 F)tie42 years4 of 100 (Routine)
6 September 2009Zacapoaxtla (Smn), MXdaily high min15.0 C (59.0 F)0.6 C (1.1 F)42 years20 of 100 (Routine)
20 August 2009Zacapoaxtla (Smn), MXdaily high min (Tie)13.9 C (57.0 F)tie46 years4 of 100 (Routine)
18 August 2009Zacapoaxtla (Smn), MXdaily low max16.7 C (62.1 F)0.5 C (0.9 F)30 years17 of 100 (Routine)
12 August 2009Zacapoaxtla (Smn), MXdaily low min5.6 C (42.1 F)2.2 C (4.0 F)12 years20 of 100 (Routine)
11 August 2009Zacapoaxtla (Smn), MXdaily low min6.7 C (44.1 F)1.1 C (2.0 F)12 years14 of 100 (Routine)
4 August 2009Zacapoaxtla (Smn), MXdaily low min6.7 C (44.1 F)1.1 C (2.0 F)11 years14 of 100 (Routine)
3 August 2009Zacapoaxtla (Smn), MXdaily low min6.7 C (44.1 F)1.1 C (2.0 F)11 years14 of 100 (Routine)
2 August 2009Zacapoaxtla (Smn), MXdaily low min6.7 C (44.1 F)1.1 C (2.0 F)10 years14 of 100 (Routine)
1 August 2009Zacapoaxtla (Smn), MXdaily low min6.7 C (44.1 F)1.1 C (2.0 F)10 years14 of 100 (Routine)
22 July 2009Zacapoaxtla (Smn), MXdaily low min (Tie)6.7 C (44.1 F)tie8 years2 of 100 (Routine)
30 June 2009Zacapoaxtla (Smn), MXdaily high min (Tie)15.0 C (59.0 F)tie64 years6 of 100 (Routine)
21 June 2009Zacapoaxtla (Smn), MXdaily high min (Tie)16.7 C (62.1 F)tie40 years4 of 100 (Routine)
13 June 2009Zacapoaxtla (Smn), MXdaily high min16.7 C (62.1 F)0.6 C (1.1 F)42 years20 of 100 (Routine)
20 May 2009Zacapoaxtla (Smn), MXdaily low max15.6 C (60.1 F)0.5 C (0.9 F)23 years13 of 100 (Routine)

Climate Trend

35 complete years, 1963 to 2009
Annual mean temperature at Zacapoaxtla (Smn) as warming stripes, 1963 to 2009 One stripe for each of 35 complete years at Zacapoaxtla (Smn), 1963 to 2009. Blue stripes are years cooler than the station's own mean of 15.4 C (59.8 F); red stripes are warmer. The coolest year was 2004, at 14.3 C (57.7 F), and the warmest was 1983, at 16.6 C (62.0 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1963: 14.6 C, -0.8 C from the station mean1964: 15.0 C, -0.4 C from the station mean1966: 14.4 C, -1.0 C from the station mean1967: 14.6 C, -0.8 C from the station mean1968: 14.5 C, -0.9 C from the station mean1969: 15.2 C, -0.2 C from the station mean1970: 14.8 C, -0.6 C from the station mean1971: 15.5 C, +0.1 C from the station mean1972: 15.6 C, +0.2 C from the station mean1973: 16.0 C, +0.6 C from the station mean1974: 16.0 C, +0.6 C from the station mean1975: 16.6 C, +1.1 C from the station mean1976: 15.7 C, +0.2 C from the station mean1977: 16.6 C, +1.2 C from the station mean1978: 16.3 C, +0.9 C from the station mean1979: 16.1 C, +0.7 C from the station mean1980: 16.3 C, +0.9 C from the station mean1981: 15.9 C, +0.4 C from the station mean1982: 16.6 C, +1.2 C from the station mean1983: 16.6 C, +1.2 C from the station mean1984: 15.9 C, +0.5 C from the station mean1985: 16.0 C, +0.6 C from the station mean1986: 16.1 C, +0.7 C from the station mean1988: 15.1 C, -0.3 C from the station mean1990: 15.5 C, +0.1 C from the station mean1991: 15.8 C, +0.4 C from the station mean1997: 16.1 C, +0.6 C from the station mean2000: 14.6 C, -0.8 C from the station mean2001: 14.4 C, -1.1 C from the station mean2002: 14.5 C, -0.9 C from the station mean2004: 14.3 C, -1.2 C from the station mean2005: 14.8 C, -0.7 C from the station mean2007: 14.5 C, -0.9 C from the station mean2008: 14.7 C, -0.8 C from the station mean2009: 14.8 C, -0.6 C from the station mean196319701975198019851990199520002005
One stripe for each of 35 complete years at Zacapoaxtla (Smn), 1963 to 2009. Blue stripes are years cooler than the station's own mean of 15.4 C (59.8 F); red stripes are warmer. The coolest year was 2004, at 14.3 C (57.7 F), and the warmest was 1983, at 16.6 C (62.0 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Zacapoaxtla (Smn) as warming stripes, 1963 to 2009
YearAnnual mean temperatureDifference from the station mean
196314.6 C-0.85 C
196415.0 C-0.42 C
196614.4 C-1.05 C
196714.6 C-0.81 C
196814.5 C-0.89 C
196915.2 C-0.21 C
197014.8 C-0.64 C
197115.5 C+0.09 C
197215.6 C+0.18 C
197316.0 C+0.55 C
197416.0 C+0.57 C
197516.6 C+1.12 C
197615.7 C+0.22 C
197716.6 C+1.19 C
197816.3 C+0.86 C
197916.1 C+0.71 C
198016.3 C+0.88 C
198115.9 C+0.43 C
198216.6 C+1.21 C
198316.6 C+1.21 C
198415.9 C+0.47 C
198516.0 C+0.57 C
198616.1 C+0.68 C
198815.1 C-0.33 C
199015.5 C+0.10 C
199115.8 C+0.41 C
199716.1 C+0.64 C
200014.6 C-0.85 C
200114.4 C-1.07 C
200214.5 C-0.89 C
200414.3 C-1.18 C
200514.8 C-0.68 C
200714.5 C-0.94 C
200814.7 C-0.76 C
200914.8 C-0.59 C

The fitted trend in annual mean temperature here over 1963 to 2009 is -0.14 C (-0.33 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.3 F (-0.6 to 0.1) 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 Zacapoaxtla (Smn)
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.14 C (-0.33 to 0.05) per decade-0.3 F (-0.6 to 0.1) per decade1963 to 200935Not clearly different from zero
Mean daily maximum0.28 C (0.00 to 0.57) per decade0.51 F (-0.01 to 1.03) per decade1963 to 200935Not clearly different from zero
Mean daily minimum-0.6 C (-0.7 to -0.4) per decade-1.0 F (-1.3 to -0.8) per decade1963 to 200935Fall

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

1944 to 2009
Yearly extremes at Zacapoaxtla (Smn): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)194531.7 C (89.1 F)47
Coldest night (TNn)-6.1 C (21.0 F)19970.0 C (32.0 F)46
Wettest day (Rx1day)342.9 mm (13.5 in)1999119.9 mm (4.7 in)61
Wettest five days (Rx5day)844.9 mm (33.3 in)1999235.9 mm (9.3 in)61
Longest dry spell (CDD)56 days195624 days61

Hottest day (TXx)

Hottest day (TXx) at Zacapoaxtla (Smn) by year The hottest day of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 38.9 C (102.0 F) in 1945, marked on the chart; the median year is 31.7 C (89.1 F). 25303540196019802000Record: 38.9 C (102.0 F) in 1945
The hottest day of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 38.9 C (102.0 F) in 1945, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Zacapoaxtla (Smn) by year
YearHottest day (TXx)
194428.9 C (84.0 F)
194538.9 C (102.0 F)
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1959n/a
1960n/a
196130.0 C (86.0 F)
196225.0 C (77.0 F)
196328.9 C (84.0 F)
196432.8 C (91.0 F)
196528.9 C (84.0 F)
196629.4 C (84.9 F)
196730.6 C (87.1 F)
196828.9 C (84.0 F)
196930.6 C (87.1 F)
197030.0 C (86.0 F)
197133.9 C (93.0 F)
197232.2 C (90.0 F)
197335.0 C (95.0 F)
197432.2 C (90.0 F)
197531.7 C (89.1 F)
197632.2 C (90.0 F)
197733.9 C (93.0 F)
197832.8 C (91.0 F)
197933.9 C (93.0 F)
198031.7 C (89.1 F)
198131.1 C (88.0 F)
198232.8 C (91.0 F)
198335.0 C (95.0 F)
198433.9 C (93.0 F)
198530.6 C (87.1 F)
198632.8 C (91.0 F)
198732.2 C (90.0 F)
198832.8 C (91.0 F)
198932.8 C (91.0 F)
199030.0 C (86.0 F)
199132.8 C (91.0 F)
199228.9 C (84.0 F)
199332.2 C (90.0 F)
199626.1 C (79.0 F)
199728.9 C (84.0 F)
199833.9 C (93.0 F)
199931.7 C (89.1 F)
200030.0 C (86.0 F)
200131.7 C (89.1 F)
200228.9 C (84.0 F)
200428.9 C (84.0 F)
200531.7 C (89.1 F)
200730.6 C (87.1 F)
200830.6 C (87.1 F)
200930.0 C (86.0 F)

Coldest night (TNn)

Coldest night (TNn) at Zacapoaxtla (Smn) by year The coldest night of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is -6.1 C (21.0 F) in 1997, marked on the chart; the median year is 0.0 C (32.0 F). -10-50510196019802000Record: -6.1 C (21.0 F) in 1997
The coldest night of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is -6.1 C (21.0 F) in 1997, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Zacapoaxtla (Smn) by year
YearColdest night (TNn)
19440.6 C (33.1 F)
19457.8 C (46.0 F)
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1959n/a
1960n/a
1961n/a
19623.9 C (39.0 F)
19630.0 C (32.0 F)
19640.0 C (32.0 F)
19650.0 C (32.0 F)
19660.0 C (32.0 F)
19670.0 C (32.0 F)
19680.0 C (32.0 F)
19691.1 C (34.0 F)
19700.0 C (32.0 F)
19710.6 C (33.1 F)
19720.0 C (32.0 F)
19730.0 C (32.0 F)
19740.0 C (32.0 F)
1975-1.7 C (28.9 F)
1976-2.8 C (27.0 F)
19770.0 C (32.0 F)
1978-1.7 C (28.9 F)
1979-5.0 C (23.0 F)
1980-1.1 C (30.0 F)
19812.2 C (36.0 F)
19821.7 C (35.1 F)
19830.0 C (32.0 F)
19840.0 C (32.0 F)
19850.0 C (32.0 F)
19860.0 C (32.0 F)
19870.0 C (32.0 F)
19880.0 C (32.0 F)
19892.2 C (36.0 F)
19900.6 C (33.1 F)
19912.2 C (36.0 F)
19920.6 C (33.1 F)
19930.0 C (32.0 F)
1996-1.7 C (28.9 F)
1997-6.1 C (21.0 F)
19980.6 C (33.1 F)
1999-2.2 C (28.0 F)
20000.0 C (32.0 F)
2001-2.2 C (28.0 F)
2002-4.4 C (24.1 F)
2004-2.2 C (28.0 F)
20050.6 C (33.1 F)
20070.0 C (32.0 F)
20080.0 C (32.0 F)
20090.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Zacapoaxtla (Smn) by year The wettest day of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 342.9 mm (13.5 in) in 1999, marked on the chart; the median year is 119.9 mm (4.7 in). 0100200300400196019802000Record: 342.9 mm (13.5 in) in 1999
The wettest day of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 342.9 mm (13.5 in) in 1999, marked on the chart; the median year is 119.9 mm (4.7 in).
Wettest day (Rx1day) at Zacapoaxtla (Smn) by year
YearWettest day (Rx1day)
1944331.0 mm (13.0 in)
194536.8 mm (1.4 in)
194641.9 mm (1.6 in)
1947148.8 mm (5.9 in)
1948154.9 mm (6.1 in)
1949216.9 mm (8.5 in)
1950159.8 mm (6.3 in)
1951156.0 mm (6.1 in)
1952183.9 mm (7.2 in)
1953104.9 mm (4.1 in)
1954334.8 mm (13.2 in)
1955329.9 mm (13.0 in)
1956146.3 mm (5.8 in)
1957124.0 mm (4.9 in)
1959103.9 mm (4.1 in)
196072.9 mm (2.9 in)
1961141.0 mm (5.6 in)
196254.9 mm (2.2 in)
196397.3 mm (3.8 in)
1964116.3 mm (4.6 in)
196583.8 mm (3.3 in)
1966157.5 mm (6.2 in)
1967117.3 mm (4.6 in)
196856.4 mm (2.2 in)
1969134.4 mm (5.3 in)
197059.4 mm (2.3 in)
197185.9 mm (3.4 in)
197294.5 mm (3.7 in)
197365.8 mm (2.6 in)
1974316.0 mm (12.4 in)
1975137.9 mm (5.4 in)
197677.5 mm (3.1 in)
197749.8 mm (2.0 in)
1978128.8 mm (5.1 in)
1979161.8 mm (6.4 in)
1980142.0 mm (5.6 in)
1981126.0 mm (5.0 in)
1982168.9 mm (6.6 in)
198384.3 mm (3.3 in)
1984205.0 mm (8.1 in)
1985153.4 mm (6.0 in)
1986141.0 mm (5.6 in)
198749.8 mm (2.0 in)
1988104.6 mm (4.1 in)
198981.8 mm (3.2 in)
199085.6 mm (3.4 in)
199191.9 mm (3.6 in)
199250.0 mm (2.0 in)
1993100.6 mm (4.0 in)
199652.1 mm (2.1 in)
199776.5 mm (3.0 in)
1998119.9 mm (4.7 in)
1999342.9 mm (13.5 in)
2000143.3 mm (5.6 in)
2001133.9 mm (5.3 in)
200259.9 mm (2.4 in)
200475.7 mm (3.0 in)
2005285.8 mm (11.3 in)
2007185.9 mm (7.3 in)
2008190.0 mm (7.5 in)
2009118.4 mm (4.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Zacapoaxtla (Smn) by year The wettest five days of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 844.9 mm (33.3 in) in 1999, marked on the chart; the median year is 235.9 mm (9.3 in). 02004006008001,000196019802000Record: 844.9 mm (33.3 in) in 1999
The wettest five days of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 844.9 mm (33.3 in) in 1999, marked on the chart; the median year is 235.9 mm (9.3 in).
Wettest five days (Rx5day) at Zacapoaxtla (Smn) by year
YearWettest five days (Rx5day)
1944782.4 mm (30.8 in)
1945153.4 mm (6.0 in)
194685.6 mm (3.4 in)
1947352.2 mm (13.9 in)
1948182.0 mm (7.2 in)
1949695.5 mm (27.4 in)
1950310.0 mm (12.2 in)
1951314.8 mm (12.4 in)
1952603.3 mm (23.8 in)
1953420.3 mm (16.5 in)
1954639.8 mm (25.2 in)
1955674.7 mm (26.6 in)
1956468.7 mm (18.5 in)
1957196.9 mm (7.8 in)
1959142.5 mm (5.6 in)
1960157.7 mm (6.2 in)
1961258.0 mm (10.2 in)
1962117.7 mm (4.6 in)
1963163.9 mm (6.5 in)
1964180.8 mm (7.1 in)
1965154.7 mm (6.1 in)
1966328.5 mm (12.9 in)
1967235.9 mm (9.3 in)
196897.1 mm (3.8 in)
1969251.8 mm (9.9 in)
1970105.8 mm (4.2 in)
1971172.0 mm (6.8 in)
1972189.9 mm (7.5 in)
1973142.6 mm (5.6 in)
1974384.3 mm (15.1 in)
1975273.7 mm (10.8 in)
1976270.9 mm (10.7 in)
197799.1 mm (3.9 in)
1978210.1 mm (8.3 in)
1979329.8 mm (13.0 in)
1980362.1 mm (14.3 in)
1981341.1 mm (13.4 in)
1982297.9 mm (11.7 in)
1983159.3 mm (6.3 in)
1984469.6 mm (18.5 in)
1985195.9 mm (7.7 in)
1986243.6 mm (9.6 in)
198798.5 mm (3.9 in)
1988303.8 mm (12.0 in)
1989100.1 mm (3.9 in)
1990168.2 mm (6.6 in)
1991168.9 mm (6.6 in)
199271.3 mm (2.8 in)
1993299.8 mm (11.8 in)
1996162.4 mm (6.4 in)
1997113.7 mm (4.5 in)
1998297.0 mm (11.7 in)
1999844.9 mm (33.3 in)
2000199.2 mm (7.8 in)
2001276.9 mm (10.9 in)
2002111.1 mm (4.4 in)
2004140.9 mm (5.5 in)
2005658.3 mm (25.9 in)
2007232.9 mm (9.2 in)
2008299.8 mm (11.8 in)
2009404.9 mm (15.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Zacapoaxtla (Smn) by year The longest dry spell of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 56 days in 1956, marked on the chart; the median year is 24 days. 0204060196019802000Record: 56 days in 1956
The longest dry spell of the year at Zacapoaxtla (Smn), 1944 to 2009. The record is 56 days in 1956, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Zacapoaxtla (Smn) by year
YearLongest dry spell (CDD)
194431 days
194536 days
194623 days
194751 days
194833 days
194941 days
195026 days
195145 days
195220 days
195327 days
195425 days
195545 days
195656 days
195724 days
195917 days
196039 days
196117 days
196221 days
196321 days
196427 days
196524 days
196618 days
196725 days
196818 days
196922 days
197038 days
197124 days
197225 days
197326 days
197421 days
197522 days
197618 days
197720 days
197820 days
197914 days
198018 days
198124 days
198223 days
198328 days
198425 days
198525 days
198631 days
198721 days
198830 days
198915 days
199019 days
199121 days
199227 days
199317 days
199611 days
199724 days
199844 days
199925 days
200015 days
200123 days
200222 days
200424 days
200521 days
200718 days
200818 days
200925 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

54 years, 1946 to 2009

A day with at least 120.2 mm (4.7 in) of rain is expected about once in 2 years. A day with at least 406.6 mm (16.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Zacapoaxtla (Smn): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years120.2 mm (4.7 in)
5 years181.4 mm (7.1 in)
10 years227.5 mm (9.0 in)
25 years293.0 mm (11.5 in)
50 years347.3 mm (13.7 in)
100 years406.6 mm (16.0 in)Longer than the 54 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, 54 years of values from 1946 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: 342.9 mm (13.5 in) in 1999; 334.8 mm (13.2 in) in 1954; 329.9 mm (13.0 in) in 1955.

Download the Data

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