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Tehuacan Weather Records (MXN00021083)

Record envelope, standing records and threshold days for Tehuacan (MXN00021083), Mexico, with 50 years of record.

Key Facts for Tehuacan

  • Tehuacan (MXN00021083) is a weather station in Mexico at 18.45 latitude and -97.38 longitude, 2,416 m (7,926 ft) above sea level.
  • The station reports from 1960 to 2009, 50 years of record.
  • 1,464 records set at Tehuacan still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Tehuacan set a daily record precipitation of 7.9 mm (0.31 in) on 31 December 2009.

About the Station

  • Location: Mexico, 18.45 latitude, -97.38 longitude.
  • Elevation: 2,416 m (7,926 ft).
  • Period of record: 1960 to 2009, 50 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 Tehuacan, with 2026 drawn through them The band shows the record high and record low for each calendar day at Tehuacan. 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 Tehuacan. 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 Tehuacan, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.6 C (87.1 F)-5.0 C (23.0 F)n/an/a
Feb33.9 C (93.0 F)-5.0 C (23.0 F)n/an/a
Mar35.6 C (96.1 F)-4.4 C (24.1 F)n/an/a
Apr38.9 C (102.0 F)1.1 C (34.0 F)n/an/a
May38.9 C (102.0 F)2.8 C (37.0 F)n/an/a
Jun36.7 C (98.1 F)5.6 C (42.1 F)n/an/a
Jul33.9 C (93.0 F)6.7 C (44.1 F)n/an/a
Aug32.8 C (91.0 F)5.0 C (41.0 F)n/an/a
Sep33.9 C (93.0 F)5.0 C (41.0 F)n/an/a
Oct32.8 C (91.0 F)-2.2 C (28.0 F)n/an/a
Nov35.6 C (96.1 F)-2.2 C (28.0 F)n/an/a
Dec31.7 C (89.1 F)-5.0 C (23.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Tehuacan by the year they were set 1,464 records at Tehuacan still stand. 1989 holds the most, with 62. 0204060801960: 141961: 271962: 171963: 351964: 421965: 321966: 401967: 311968: 351969: 341970: 391971: 301972: 261973: 411974: 441975: 251976: 311977: 291978: 251979: 291980: 351981: 371982: 321983: 521984: 431985: 471986: 561987: 571988: 191989: 621990: 161991: 281992: 111993: 91994: 211995: 201996: 101997: 381998: 541999: 162004: 392005: 332006: 422007: 302008: 212009: 101960196519701975198019851990199520042009
1,464 records at Tehuacan still stand. 1989 holds the most, with 62.
Standing records at Tehuacan by the year they were set
Year setStanding records
196014
196127
196217
196335
196442
196532
196640
196731
196835
196934
197039
197130
197226
197341
197444
197525
197631
197729
197825
197929
198035
198137
198232
198352
198443
198547
198656
198757
198819
198962
199016
199128
199211
19939
199421
199520
199610
199738
199854
199916
200439
200533
200642
200730
200821
200910

Wettest Day of Each Month

Jun: 119.9 mm (4.7 in)
Record daily precipitation for each month at Tehuacan The wettest day on record for each calendar month at Tehuacan. The most was 119.9 mm (4.7 in) on 8 June 1984. 050100150 Jan: 29.5 mm (1.2 in), 31 January 1992 Jan Feb: 21.8 mm (0.9 in), 12 February 1979 Feb Mar: 18.8 mm (0.7 in), 1 March 1982 Mar Apr: 33.8 mm (1.3 in), 30 April 1993 Apr May: 95.0 mm (3.7 in), 28 May 1992 May Jun: 119.9 mm (4.7 in), 8 June 1984 Jun Jul: 84.8 mm (3.3 in), 4 July 1991 Jul Aug: 64.3 mm (2.5 in), 11 August 1996 Aug Sep: 95.0 mm (3.7 in), 26 September 1980 Sep Oct: 95.8 mm (3.8 in), 6 October 1999 Oct Nov: 31.8 mm (1.3 in), 3 November 1998 Nov Dec: 9.9 mm (0.39 in), 28 December 1986 Dec
The wettest day on record for each calendar month at Tehuacan. The most was 119.9 mm (4.7 in) on 8 June 1984.
Record daily precipitation for each month at Tehuacan
MonthRecord daily precipitation (mm)Date
Jan29.5 mm (1.2 in)31 January 1992
Feb21.8 mm (0.9 in)12 February 1979
Mar18.8 mm (0.7 in)1 March 1982
Apr33.8 mm (1.3 in)30 April 1993
May95.0 mm (3.7 in)28 May 1992
Jun119.9 mm (4.7 in)8 June 1984
Jul84.8 mm (3.3 in)4 July 1991
Aug64.3 mm (2.5 in)11 August 1996
Sep95.0 mm (3.7 in)26 September 1980
Oct95.8 mm (3.8 in)6 October 1999
Nov31.8 mm (1.3 in)3 November 1998
Dec9.9 mm (0.39 in)28 December 1986

Period of Record Coverage

1960 to 2009
Days with data per year at Tehuacan 46 years of record at Tehuacan, 1960 to 2009. 10 years have data for under 90 percent of days and are left out of rankings: 1960, 1961, 1962, 1966, 1987, 1992, 1994, 1995 and others. 1960: 139 of 366 days1961: 243 of 365 days1962: 273 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 273 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: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 327 of 365 days1988: 335 of 366 days1989: 365 of 365 days1990: 334 of 365 days1991: 365 of 365 days1992: 304 of 366 days1993: 365 of 365 days1994: 304 of 365 days1995: 273 of 365 days1996: 306 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 304 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 359 of 366 days2009: 361 of 365 days1960197019801990
46 years of record at Tehuacan, 1960 to 2009. 10 years have data for under 90 percent of days and are left out of rankings: 1960, 1961, 1962, 1966, 1987, 1992, 1994, 1995 and others.
Days with data per year at Tehuacan
YearDays with dataShare of yearComplete
196013938%No
196124367%No
196227375%No
1963365100%Yes
1964366100%Yes
1965365100%Yes
196627375%No
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978364100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
198732790%No
198833592%Yes
1989365100%Yes
199033492%Yes
1991365100%Yes
199230483%No
1993365100%Yes
199430483%No
199527375%No
199630684%No
1997365100%Yes
1998365100%Yes
199930483%No
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007364100%Yes
200835998%Yes
200936199%Yes

Latest Records

20
Latest records at Tehuacan
DateStationRecordValueBeat old record byOld record stoodSignificance
31 December 2009Tehuacan, MXdaily rain7.9 mm (0.31 in)6.6 mm (0.26 in)40 years20 of 100 (Routine)
23 December 2009Tehuacan, MXdaily low min (Tie)2.8 C (37.0 F)tie44 years4 of 100 (Routine)
16 December 2009Tehuacan, MXdaily rain (Tie)0.3 mm (0.01 in)tie43 years4 of 100 (Routine)
5 December 2009Tehuacan, MXdaily low max15.0 C (59.0 F)0.6 C (1.1 F)44 years19 of 100 (Routine)
2 December 2009Tehuacan, MXdaily high max (Tie)27.8 C (82.0 F)tie31 years3 of 100 (Routine)
25 November 2009Tehuacan, MXdaily high min (Tie)12.8 C (55.0 F)tie23 years2 of 100 (Routine)
2 November 2009Tehuacan, MXdaily high min (Tie)13.9 C (57.0 F)tie12 years2 of 100 (Routine)
31 October 2009Tehuacan, MXdaily rain7.9 mm (0.31 in)5.6 mm (0.22 in)42 years20 of 100 (Routine)
31 October 2009Tehuacan, MXdaily high min (Tie)13.9 C (57.0 F)tie48 years4 of 100 (Routine)
26 October 2009Tehuacan, MXdaily rain42.9 mm (1.7 in)35.5 mm (1.4 in)46 years52 of 100 (Notable)
25 October 2009Tehuacan, MXdaily rain13.5 mm (0.5 in)4.6 mm (0.18 in)18 years14 of 100 (Routine)
22 October 2009Tehuacan, MXdaily high max (Tie)30.0 C (86.0 F)tie24 years3 of 100 (Routine)
9 October 2009Tehuacan, MXdaily high max30.6 C (87.1 F)0.6 C (1.1 F)32 years16 of 100 (Routine)
4 October 2009Tehuacan, MXdaily high max (Tie)30.0 C (86.0 F)tie19 years2 of 100 (Routine)
27 September 2009Tehuacan, MXdaily high min (Tie)15.6 C (60.1 F)tie44 years4 of 100 (Routine)
15 September 2009Tehuacan, MXdaily high min (Tie)15.0 C (59.0 F)tie46 years4 of 100 (Routine)
14 September 2009Tehuacan, MXdaily rain14.0 mm (0.6 in)3.1 mm (0.12 in)3 years7 of 100 (Routine)
13 September 2009Tehuacan, MXdaily rain27.9 mm (1.1 in)20.0 mm (0.8 in)24 years28 of 100 (Routine)
13 September 2009Tehuacan, MXdaily high min (Tie)15.6 C (60.1 F)tie40 years4 of 100 (Routine)
8 September 2009Tehuacan, MXdaily rain40.4 mm (1.6 in)17.5 mm (0.7 in)30 years28 of 100 (Routine)

Climate Trend

34 complete years, 1963 to 2009
Annual mean temperature at Tehuacan as warming stripes, 1963 to 2009 One stripe for each of 34 complete years at Tehuacan, 1963 to 2009. Blue stripes are years cooler than the station's own mean of 17.8 C (64.1 F); red stripes are warmer. The coolest year was 1985, at 16.8 C (62.3 F), and the warmest was 1998, at 19.0 C (66.2 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1963: 17.5 C, -0.3 C from the station mean1964: 17.8 C, 0.0 C from the station mean1965: 17.6 C, -0.3 C from the station mean1967: 17.2 C, -0.6 C from the station mean1968: 17.3 C, -0.5 C from the station mean1969: 18.1 C, +0.3 C from the station mean1970: 17.5 C, -0.3 C from the station mean1971: 17.5 C, -0.3 C from the station mean1972: 18.0 C, +0.2 C from the station mean1973: 18.2 C, +0.4 C from the station mean1974: 17.2 C, -0.6 C from the station mean1975: 17.6 C, -0.2 C from the station mean1976: 17.4 C, -0.4 C from the station mean1977: 18.1 C, +0.3 C from the station mean1978: 18.3 C, +0.4 C from the station mean1979: 18.0 C, +0.2 C from the station mean1980: 17.8 C, 0.0 C from the station mean1981: 16.9 C, -1.0 C from the station mean1982: 16.9 C, -0.9 C from the station mean1983: 17.0 C, -0.9 C from the station mean1984: 17.2 C, -0.6 C from the station mean1985: 16.8 C, -1.0 C from the station mean1986: 17.2 C, -0.6 C from the station mean1989: 17.9 C, 0.0 C from the station mean1991: 18.2 C, +0.4 C from the station mean1993: 18.0 C, +0.2 C from the station mean1997: 18.7 C, +0.8 C from the station mean1998: 19.0 C, +1.2 C from the station mean2004: 18.2 C, +0.4 C from the station mean2005: 18.8 C, +1.0 C from the station mean2006: 18.5 C, +0.7 C from the station mean2007: 18.7 C, +0.8 C from the station mean2008: 18.3 C, +0.5 C from the station mean2009: 18.3 C, +0.4 C from the station mean196319701975198019851990199520002005
One stripe for each of 34 complete years at Tehuacan, 1963 to 2009. Blue stripes are years cooler than the station's own mean of 17.8 C (64.1 F); red stripes are warmer. The coolest year was 1985, at 16.8 C (62.3 F), and the warmest was 1998, at 19.0 C (66.2 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Tehuacan as warming stripes, 1963 to 2009
YearAnnual mean temperatureDifference from the station mean
196317.5 C-0.31 C
196417.8 C-0.04 C
196517.6 C-0.26 C
196717.2 C-0.57 C
196817.3 C-0.51 C
196918.1 C+0.33 C
197017.5 C-0.31 C
197117.5 C-0.34 C
197218.0 C+0.22 C
197318.2 C+0.43 C
197417.2 C-0.57 C
197517.6 C-0.22 C
197617.4 C-0.39 C
197718.1 C+0.26 C
197818.3 C+0.45 C
197918.0 C+0.23 C
198017.8 C0.00 C
198116.9 C-0.95 C
198216.9 C-0.89 C
198317.0 C-0.85 C
198417.2 C-0.63 C
198516.8 C-0.97 C
198617.2 C-0.59 C
198917.9 C+0.05 C
199118.2 C+0.39 C
199318.0 C+0.16 C
199718.7 C+0.84 C
199819.0 C+1.19 C
200418.2 C+0.43 C
200518.8 C+1.03 C
200618.5 C+0.71 C
200718.7 C+0.85 C
200818.3 C+0.47 C
200918.3 C+0.44 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.4) per decade over 1963 to 2009. In Fahrenheit: 0.4 F (0.2 to 0.6) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tehuacan
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.4) per decade0.4 F (0.2 to 0.6) per decade1963 to 200934Rise
Mean daily maximum0.4 C (0.3 to 0.6) per decade0.8 F (0.5 to 1.1) per decade1963 to 200934Rise
Mean daily minimum0.04 C (-0.07 to 0.14) per decade0.1 F (-0.1 to 0.3) per decade1963 to 200934Not 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 2009
Yearly extremes at Tehuacan: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)198734.7 C (94.5 F)46
Coldest night (TNn)-5.0 C (23.0 F)1961-1.1 C (30.0 F)46
Wettest day (Rx1day)119.9 mm (4.7 in)198445.3 mm (1.8 in)46
Wettest five days (Rx5day)230.8 mm (9.1 in)198097.3 mm (3.8 in)46
Longest dry spell (CDD)133 days197075 days46

Hottest day (TXx)

Hottest day (TXx) at Tehuacan by year The hottest day of the year at Tehuacan, 1960 to 2009. The record is 38.9 C (102.0 F) in 1987, marked on the chart; the median year is 34.7 C (94.5 F). 3032.53537.54019601970198019902000Record: 38.9 C (102.0 F) in 1987
The hottest day of the year at Tehuacan, 1960 to 2009. The record is 38.9 C (102.0 F) in 1987, marked on the chart; the median year is 34.7 C (94.5 F).
Hottest day (TXx) at Tehuacan by year
YearHottest day (TXx)
196030.0 C (86.0 F)
196130.6 C (87.1 F)
196232.8 C (91.0 F)
196332.8 C (91.0 F)
196433.9 C (93.0 F)
196532.8 C (91.0 F)
196630.6 C (87.1 F)
196731.1 C (88.0 F)
196832.2 C (90.0 F)
196933.3 C (91.9 F)
197034.4 C (93.9 F)
197134.4 C (93.9 F)
197232.8 C (91.0 F)
197335.0 C (95.0 F)
197434.4 C (93.9 F)
197533.9 C (93.0 F)
197632.8 C (91.0 F)
197735.0 C (95.0 F)
197835.6 C (96.1 F)
197935.0 C (95.0 F)
198035.0 C (95.0 F)
198135.0 C (95.0 F)
198232.8 C (91.0 F)
198335.0 C (95.0 F)
198435.0 C (95.0 F)
198532.8 C (91.0 F)
198635.0 C (95.0 F)
198738.9 C (102.0 F)
198835.0 C (95.0 F)
198933.9 C (93.0 F)
199033.9 C (93.0 F)
199135.6 C (96.1 F)
199231.7 C (89.1 F)
199333.9 C (93.0 F)
199435.6 C (96.1 F)
199535.0 C (95.0 F)
199635.0 C (95.0 F)
199733.9 C (93.0 F)
199837.8 C (100.0 F)
199935.0 C (95.0 F)
200435.6 C (96.1 F)
200536.7 C (98.1 F)
200636.7 C (98.1 F)
200736.7 C (98.1 F)
200836.7 C (98.1 F)
200935.6 C (96.1 F)

Coldest night (TNn)

Coldest night (TNn) at Tehuacan by year The coldest night of the year at Tehuacan, 1960 to 2009. The record is -5.0 C (23.0 F) in 1961, marked on the chart; the median year is -1.1 C (30.0 F). -5-2.502.5519601970198019902000Record: -5.0 C (23.0 F) in 1961
The coldest night of the year at Tehuacan, 1960 to 2009. The record is -5.0 C (23.0 F) in 1961, marked on the chart; the median year is -1.1 C (30.0 F).
Coldest night (TNn) at Tehuacan by year
YearColdest night (TNn)
19605.0 C (41.0 F)
1961-5.0 C (23.0 F)
1962-1.7 C (28.9 F)
1963-2.2 C (28.0 F)
19640.6 C (33.1 F)
1965-1.1 C (30.0 F)
1966-3.3 C (26.1 F)
1967-3.3 C (26.1 F)
1968-2.2 C (28.0 F)
19690.6 C (33.1 F)
1970-0.6 C (30.9 F)
19711.1 C (34.0 F)
1972-0.6 C (30.9 F)
19730.0 C (32.0 F)
1974-1.1 C (30.0 F)
1975-1.7 C (28.9 F)
1976-4.4 C (24.1 F)
19771.1 C (34.0 F)
19781.7 C (35.1 F)
1979-3.3 C (26.1 F)
1980-3.3 C (26.1 F)
1981-2.2 C (28.0 F)
1982-5.0 C (23.0 F)
1983-1.1 C (30.0 F)
1984-2.2 C (28.0 F)
1985-0.6 C (30.9 F)
1986-5.0 C (23.0 F)
1987-5.0 C (23.0 F)
19880.6 C (33.1 F)
1989-5.0 C (23.0 F)
1990-2.2 C (28.0 F)
19910.0 C (32.0 F)
19920.0 C (32.0 F)
1993-1.1 C (30.0 F)
19940.0 C (32.0 F)
19950.6 C (33.1 F)
19960.6 C (33.1 F)
19970.6 C (33.1 F)
19980.0 C (32.0 F)
1999-2.2 C (28.0 F)
20040.0 C (32.0 F)
2005-2.2 C (28.0 F)
2006-3.3 C (26.1 F)
20071.7 C (35.1 F)
20080.6 C (33.1 F)
20090.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Tehuacan by year The wettest day of the year at Tehuacan, 1960 to 2009. The record is 119.9 mm (4.7 in) in 1984, marked on the chart; the median year is 45.3 mm (1.8 in). 05010015019601970198019902000Record: 119.9 mm (4.7 in) in 1984
The wettest day of the year at Tehuacan, 1960 to 2009. The record is 119.9 mm (4.7 in) in 1984, marked on the chart; the median year is 45.3 mm (1.8 in).
Wettest day (Rx1day) at Tehuacan by year
YearWettest day (Rx1day)
196042.9 mm (1.7 in)
196119.8 mm (0.8 in)
196224.4 mm (1.0 in)
196359.9 mm (2.4 in)
196447.5 mm (1.9 in)
196537.3 mm (1.5 in)
196633.8 mm (1.3 in)
196765.5 mm (2.6 in)
196836.3 mm (1.4 in)
196957.9 mm (2.3 in)
197068.8 mm (2.7 in)
197142.9 mm (1.7 in)
197233.8 mm (1.3 in)
197345.5 mm (1.8 in)
197441.9 mm (1.6 in)
197542.9 mm (1.7 in)
197681.3 mm (3.2 in)
197733.3 mm (1.3 in)
197831.8 mm (1.3 in)
197964.8 mm (2.6 in)
198095.0 mm (3.7 in)
198153.8 mm (2.1 in)
198295.0 mm (3.7 in)
198345.0 mm (1.8 in)
1984119.9 mm (4.7 in)
198545.0 mm (1.8 in)
198669.9 mm (2.8 in)
198717.8 mm (0.7 in)
198862.0 mm (2.4 in)
198951.1 mm (2.0 in)
199018.3 mm (0.7 in)
199184.8 mm (3.3 in)
199295.0 mm (3.7 in)
199345.0 mm (1.8 in)
199431.5 mm (1.2 in)
199568.8 mm (2.7 in)
199674.9 mm (2.9 in)
199729.0 mm (1.1 in)
199857.9 mm (2.3 in)
199995.8 mm (3.8 in)
200464.8 mm (2.6 in)
200555.9 mm (2.2 in)
200638.9 mm (1.5 in)
200733.3 mm (1.3 in)
200845.0 mm (1.8 in)
200942.9 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Tehuacan by year The wettest five days of the year at Tehuacan, 1960 to 2009. The record is 230.8 mm (9.1 in) in 1980, marked on the chart; the median year is 97.3 mm (3.8 in). 010020030019601970198019902000Record: 230.8 mm (9.1 in) in 1980
The wettest five days of the year at Tehuacan, 1960 to 2009. The record is 230.8 mm (9.1 in) in 1980, marked on the chart; the median year is 97.3 mm (3.8 in).
Wettest five days (Rx5day) at Tehuacan by year
YearWettest five days (Rx5day)
196086.9 mm (3.4 in)
196134.9 mm (1.4 in)
196243.3 mm (1.7 in)
196362.8 mm (2.5 in)
1964101.7 mm (4.0 in)
196541.6 mm (1.6 in)
196654.2 mm (2.1 in)
1967111.6 mm (4.4 in)
1968114.3 mm (4.5 in)
1969110.2 mm (4.3 in)
1970118.4 mm (4.7 in)
197148.8 mm (1.9 in)
197266.8 mm (2.6 in)
1973102.7 mm (4.0 in)
1974105.4 mm (4.1 in)
1975104.2 mm (4.1 in)
1976208.3 mm (8.2 in)
197747.1 mm (1.9 in)
197868.8 mm (2.7 in)
1979164.2 mm (6.5 in)
1980230.8 mm (9.1 in)
1981162.5 mm (6.4 in)
198299.1 mm (3.9 in)
198394.0 mm (3.7 in)
1984162.1 mm (6.4 in)
198586.8 mm (3.4 in)
1986111.6 mm (4.4 in)
198732.4 mm (1.3 in)
1988151.1 mm (5.9 in)
198972.8 mm (2.9 in)
199030.3 mm (1.2 in)
1991165.8 mm (6.5 in)
1992191.8 mm (7.6 in)
1993113.4 mm (4.5 in)
199447.4 mm (1.9 in)
199595.4 mm (3.8 in)
1996102.4 mm (4.0 in)
199749.3 mm (1.9 in)
1998105.5 mm (4.2 in)
1999156.8 mm (6.2 in)
2004108.0 mm (4.3 in)
200582.1 mm (3.2 in)
200658.2 mm (2.3 in)
200744.2 mm (1.7 in)
200865.3 mm (2.6 in)
200963.2 mm (2.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Tehuacan by year The longest dry spell of the year at Tehuacan, 1960 to 2009. The record is 133 days in 1970, marked on the chart; the median year is 75 days. 25507510012515019601970198019902000Record: 133 days in 1970
The longest dry spell of the year at Tehuacan, 1960 to 2009. The record is 133 days in 1970, marked on the chart; the median year is 75 days.
Longest dry spell (CDD) at Tehuacan by year
YearLongest dry spell (CDD)
196037 days
196159 days
1962104 days
196392 days
1964107 days
196544 days
196674 days
196762 days
196844 days
196986 days
1970133 days
197183 days
197272 days
197378 days
197477 days
1975131 days
197676 days
1977102 days
197839 days
197957 days
198070 days
198159 days
198258 days
198349 days
198487 days
198598 days
198657 days
198762 days
198878 days
198979 days
199056 days
1991111 days
199256 days
199362 days
1994108 days
199534 days
199654 days
199777 days
1998111 days
199941 days
200478 days
200572 days
200681 days
200769 days
2008107 days
200995 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

37 years, 1963 to 2009

A day with at least 50.5 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 133.5 mm (5.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Tehuacan: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years50.5 mm (2.0 in)
5 years70.1 mm (2.8 in)
10 years84.1 mm (3.3 in)
25 years103.0 mm (4.1 in)
50 years117.9 mm (4.6 in)Longer than the 37 years of record
100 years133.5 mm (5.3 in)Longer than the 37 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, 37 years of values from 1963 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: 119.9 mm (4.7 in) in 1984; 95.0 mm (3.7 in) in 1980; 95.0 mm (3.7 in) in 1982.

Download the Data

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