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

Chietla Weather Records (MXN00021024)

Record envelope, standing records and threshold days for Chietla (MXN00021024), Mexico, with 66 years of record.

Key Facts for Chietla

  • Chietla (MXN00021024) is a weather station in Mexico at 18.52 latitude and -98.57 longitude, 1,117 m (3,664 ft) above sea level.
  • The station reports from 1944 to 2009, 66 years of record.
  • 1,464 records set at Chietla still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Chietla set a daily record low maximum temperature of 21.7 C (71.1 F) on 28 December 2009.

About the Station

  • Location: Mexico, 18.52 latitude, -98.57 longitude.
  • Elevation: 1,117 m (3,664 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 Chietla, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chietla. 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 Chietla. 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 Chietla, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan43.9 C (111.0 F)3.9 C (39.0 F)n/an/a
Feb43.9 C (111.0 F)5.0 C (41.0 F)n/an/a
Mar45.0 C (113.0 F)8.3 C (46.9 F)n/an/a
Apr47.8 C (118.0 F)10.6 C (51.1 F)n/an/a
May46.7 C (116.1 F)8.9 C (48.0 F)n/an/a
Jun45.0 C (113.0 F)8.9 C (48.0 F)n/an/a
Jul45.0 C (113.0 F)10.0 C (50.0 F)n/an/a
Aug45.0 C (113.0 F)10.6 C (51.1 F)n/an/a
Sep43.9 C (111.0 F)11.7 C (53.1 F)n/an/a
Oct40.6 C (105.1 F)5.6 C (42.1 F)n/an/a
Nov43.9 C (111.0 F)0.6 C (33.1 F)n/an/a
Dec42.8 C (109.0 F)5.0 C (41.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chietla by the year they were set 1,464 records at Chietla still stand. 1946 holds the most, with 188. 0501001502001945: 541946: 1881947: 1281948: 521949: 421950: 661951: 761952: 331953: 161954: 291955: 141956: 201958: 1451959: 171960: 231961: 231962: 121963: 181964: 211965: 151966: 251967: 91968: 151969: 211970: 111971: 51972: 261973: 181974: 101975: 41976: 111977: 61978: 51979: 151980: 61981: 91982: 31983: 171984: 121985: 21986: 151987: 111988: 101989: 51990: 61991: 31992: 111993: 61994: 41995: 31996: 81997: 111998: 71999: 182000: 102001: 82002: 102003: 42004: 92005: 42006: 162007: 252008: 182009: 201945195219601967197419811988199520022009
1,464 records at Chietla still stand. 1946 holds the most, with 188.
Standing records at Chietla by the year they were set
Year setStanding records
194554
1946188
1947128
194852
194942
195066
195176
195233
195316
195429
195514
195620
1958145
195917
196023
196123
196212
196318
196421
196515
196625
19679
196815
196921
197011
19715
197226
197318
197410
19754
197611
19776
19785
197915
19806
19819
19823
198317
198412
19852
198615
198711
198810
19895
19906
19913
199211
19936
19944
19953
19968
199711
19987
199918
200010
20018
200210
20034
20049
20054
200616
200725
200818
200920

All-Time Record Progression

3 new records
When Chietla set new all-time records 3 all-time records were set at Chietla between 3 June 1978 and 29 August 2009. Each dot is a new record. Record daily precipitation3 June 1978: Record daily precipitation 82.8 mm (3.3 in)5 June 1980: Record daily precipitation 93.0 mm (3.7 in)29 August 2009: Record daily precipitation 101.9 mm (4.0 in)1980198519901995200020052010
3 all-time records were set at Chietla between 3 June 1978 and 29 August 2009. Each dot is a new record.
When Chietla set new all-time records
DateKindDetail
1978-06-03Record daily precipitationRecord daily precipitation 82.8 mm (3.3 in)
1980-06-05Record daily precipitationRecord daily precipitation 93.0 mm (3.7 in)
2009-08-29Record daily precipitationRecord daily precipitation 101.9 mm (4.0 in)

Wettest Day of Each Month

Aug: 101.9 mm (4.0 in)
Record daily precipitation for each month at Chietla The wettest day on record for each calendar month at Chietla. The most was 101.9 mm (4.0 in) on 29 August 2009. 050100150 Jan: 33.3 mm (1.3 in), 10 January 1967 Jan Feb: 14.5 mm (0.6 in), 11 February 1983 Feb Mar: 18.8 mm (0.7 in), 2 March 2001 Mar Apr: 20.8 mm (0.8 in), 19 April 1946 Apr May: 72.4 mm (2.9 in), 29 May 1971 May Jun: 93.0 mm (3.7 in), 5 June 1980 Jun Jul: 86.4 mm (3.4 in), 11 July 1983 Jul Aug: 101.9 mm (4.0 in), 29 August 2009 Aug Sep: 92.2 mm (3.6 in), 25 September 2003 Sep Oct: 67.3 mm (2.6 in), 14 October 1959 Oct Nov: 41.9 mm (1.6 in), 1 November 1958 Nov Dec: 9.4 mm (0.37 in), 3 December 1968 Dec
The wettest day on record for each calendar month at Chietla. The most was 101.9 mm (4.0 in) on 29 August 2009.
Record daily precipitation for each month at Chietla
MonthRecord daily precipitation (mm)Date
Jan33.3 mm (1.3 in)10 January 1967
Feb14.5 mm (0.6 in)11 February 1983
Mar18.8 mm (0.7 in)2 March 2001
Apr20.8 mm (0.8 in)19 April 1946
May72.4 mm (2.9 in)29 May 1971
Jun93.0 mm (3.7 in)5 June 1980
Jul86.4 mm (3.4 in)11 July 1983
Aug101.9 mm (4.0 in)29 August 2009
Sep92.2 mm (3.6 in)25 September 2003
Oct67.3 mm (2.6 in)14 October 1959
Nov41.9 mm (1.6 in)1 November 1958
Dec9.4 mm (0.37 in)3 December 1968

Period of Record Coverage

1945 to 2009
Days with data per year at Chietla 64 years of record at Chietla, 1945 to 2009. 5 years have data for under 90 percent of days and are left out of rankings: 1955, 1969, 1989, 1993, 1995. 1945: 359 of 365 days1946: 363 of 365 days1947: 365 of 365 days1948: 356 of 366 days1949: 364 of 365 days1950: 365 of 365 days1951: 364 of 365 days1952: 365 of 366 days1953: 365 of 365 days1954: 361 of 365 days1955: 209 of 365 days1956: 364 of 366 days1958: 365 of 365 days1959: 364 of 365 days1960: 364 of 366 days1961: 365 of 365 days1962: 362 of 365 days1963: 365 of 365 days1964: 335 of 366 days1965: 364 of 365 days1966: 364 of 365 days1967: 365 of 365 days1968: 365 of 366 days1969: 328 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: 365 of 366 days1977: 356 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 335 of 365 days1988: 366 of 366 days1989: 275 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 245 of 365 days1994: 365 of 365 days1995: 241 of 365 days1996: 335 of 366 days1997: 365 of 365 days1998: 362 of 365 days1999: 344 of 365 days2000: 366 of 366 days2001: 359 of 365 days2002: 349 of 365 days2003: 362 of 365 days2004: 355 of 366 days2005: 365 of 365 days2006: 360 of 365 days2007: 354 of 365 days2008: 361 of 366 days2009: 360 of 365 days195019601970198019902000
64 years of record at Chietla, 1945 to 2009. 5 years have data for under 90 percent of days and are left out of rankings: 1955, 1969, 1989, 1993, 1995.
Days with data per year at Chietla
YearDays with dataShare of yearComplete
194535998%Yes
194636399%Yes
1947365100%Yes
194835697%Yes
1949364100%Yes
1950365100%Yes
1951364100%Yes
1952365100%Yes
1953365100%Yes
195436199%Yes
195520957%No
195636499%Yes
1958365100%Yes
1959364100%Yes
196036499%Yes
1961365100%Yes
196236299%Yes
1963365100%Yes
196433592%Yes
1965364100%Yes
1966364100%Yes
1967365100%Yes
1968365100%Yes
196932890%No
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976365100%Yes
197735698%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983364100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
198733592%Yes
1988366100%Yes
198927575%No
1990364100%Yes
1991365100%Yes
1992366100%Yes
199324567%No
1994365100%Yes
199524166%No
199633592%Yes
1997365100%Yes
199836299%Yes
199934494%Yes
2000366100%Yes
200135998%Yes
200234996%Yes
200336299%Yes
200435597%Yes
2005365100%Yes
200636099%Yes
200735497%Yes
200836199%Yes
200936099%Yes

Latest Records

20
Latest records at Chietla
DateStationRecordValueBeat old record byOld record stoodSignificance
28 December 2009Chietla, MXdaily low max21.7 C (71.1 F)2.7 C (4.9 F)51 years30 of 100 (Routine)
27 December 2009Chietla, MXdaily low max21.7 C (71.1 F)1.1 C (2.0 F)51 years24 of 100 (Routine)
26 December 2009Chietla, MXdaily low max20.6 C (69.1 F)3.3 C (5.9 F)51 years32 of 100 (Routine)
24 December 2009Chietla, MXdaily low max22.8 C (73.0 F)2.2 C (4.0 F)59 years30 of 100 (Routine)
23 December 2009Chietla, MXdaily low max (Tie)20.0 C (68.0 F)tie2 years1 of 100 (Routine)
22 December 2009Chietla, MXdaily low max (Tie)25.0 C (77.0 F)tie59 years5 of 100 (Routine)
6 December 2009Chietla, MXdaily high min17.8 C (64.0 F)1.7 C (3.1 F)40 years25 of 100 (Routine)
5 December 2009Chietla, MXdaily high min17.8 C (64.0 F)1.7 C (3.1 F)36 years24 of 100 (Routine)
29 October 2009Chietla, MXmonthly low max (Tie)20.6 C (69.1 F)tie29 years6 of 100 (Routine)
5 October 2009Chietla, MXdaily high min (Tie)20.0 C (68.0 F)tie44 years4 of 100 (Routine)
4 October 2009Chietla, MXdaily high min (Tie)20.0 C (68.0 F)tie43 years4 of 100 (Routine)
3 October 2009Chietla, MXdaily high min (Tie)18.9 C (66.0 F)tie51 years5 of 100 (Routine)
27 September 2009Chietla, MXdaily high min20.0 C (68.0 F)0.6 C (1.1 F)40 years22 of 100 (Routine)
14 September 2009Chietla, MXdaily rain62.0 mm (2.4 in)23.1 mm (0.9 in)0 years23 of 100 (Routine)
12 September 2009Chietla, MXdaily high min (Tie)20.0 C (68.0 F)tie40 years4 of 100 (Routine)
29 August 2009Chietla, MXall-time rain101.9 mm (4.0 in)8.9 mm (0.35 in)29 years40 of 100 (Notable)
22 August 2009Chietla, MXdaily low min (Tie)15.0 C (59.0 F)tie63 years6 of 100 (Routine)
12 August 2009Chietla, MXmonthly low min10.6 C (51.1 F)0.5 C (0.9 F)49 years33 of 100 (Routine)
4 August 2009Chietla, MXdaily high min20.0 C (68.0 F)0.6 C (1.1 F)47 years24 of 100 (Routine)
28 July 2009Chietla, MXdaily high min (Tie)20.0 C (68.0 F)tie43 years4 of 100 (Routine)

Climate Trend

54 complete years, 1945 to 2009
Annual mean temperature at Chietla as warming stripes, 1945 to 2009 One stripe for each of 54 complete years at Chietla, 1945 to 2009. Blue stripes are years cooler than the station's own mean of 23.9 C (75.1 F); red stripes are warmer. The coolest year was 1951, at 22.6 C (72.7 F), and the warmest was 1947, at 27.7 C (81.8 F). The strongest colour marks a difference of 3.8 C (6.8 F). 1945: 25.8 C, +1.9 C from the station mean1946: 27.2 C, +3.3 C from the station mean1947: 27.7 C, +3.8 C from the station mean1948: 25.1 C, +1.1 C from the station mean1949: 23.4 C, -0.5 C from the station mean1950: 22.8 C, -1.1 C from the station mean1951: 22.6 C, -1.3 C from the station mean1952: 23.2 C, -0.7 C from the station mean1953: 23.3 C, -0.6 C from the station mean1956: 23.7 C, -0.2 C from the station mean1958: 23.0 C, -1.0 C from the station mean1959: 23.5 C, -0.4 C from the station mean1960: 23.5 C, -0.4 C from the station mean1961: 23.6 C, -0.3 C from the station mean1962: 24.1 C, +0.2 C from the station mean1963: 24.4 C, +0.4 C from the station mean1965: 24.1 C, +0.2 C from the station mean1966: 24.2 C, +0.3 C from the station mean1967: 24.2 C, +0.3 C from the station mean1968: 24.2 C, +0.3 C from the station mean1970: 24.5 C, +0.5 C from the station mean1971: 24.2 C, +0.3 C from the station mean1972: 25.1 C, +1.1 C from the station mean1973: 24.9 C, +1.0 C from the station mean1974: 23.8 C, -0.2 C from the station mean1975: 23.4 C, -0.5 C from the station mean1976: 23.6 C, -0.4 C from the station mean1977: 23.7 C, -0.3 C from the station mean1978: 23.8 C, -0.1 C from the station mean1979: 24.1 C, +0.1 C from the station mean1980: 24.1 C, +0.2 C from the station mean1981: 23.6 C, -0.3 C from the station mean1982: 24.3 C, +0.4 C from the station mean1983: 23.8 C, -0.2 C from the station mean1984: 23.3 C, -0.6 C from the station mean1985: 23.5 C, -0.4 C from the station mean1986: 23.8 C, -0.1 C from the station mean1988: 24.1 C, +0.2 C from the station mean1990: 24.0 C, 0.0 C from the station mean1991: 24.3 C, +0.3 C from the station mean1992: 23.7 C, -0.3 C from the station mean1994: 24.6 C, +0.7 C from the station mean1997: 24.0 C, +0.1 C from the station mean1998: 24.2 C, +0.2 C from the station mean2000: 23.8 C, -0.1 C from the station mean2001: 23.2 C, -0.7 C from the station mean2002: 23.9 C, -0.1 C from the station mean2003: 23.6 C, -0.4 C from the station mean2004: 22.8 C, -1.1 C from the station mean2005: 23.8 C, -0.2 C from the station mean2006: 22.9 C, -1.0 C from the station mean2007: 22.8 C, -1.1 C from the station mean2008: 22.9 C, -1.0 C from the station mean2009: 23.1 C, -0.8 C from the station mean1945195019601970198019902000
One stripe for each of 54 complete years at Chietla, 1945 to 2009. Blue stripes are years cooler than the station's own mean of 23.9 C (75.1 F); red stripes are warmer. The coolest year was 1951, at 22.6 C (72.7 F), and the warmest was 1947, at 27.7 C (81.8 F). The strongest colour marks a difference of 3.8 C (6.8 F).
Annual mean temperature at Chietla as warming stripes, 1945 to 2009
YearAnnual mean temperatureDifference from the station mean
194525.8 C+1.85 C
194627.2 C+3.27 C
194727.7 C+3.75 C
194825.1 C+1.12 C
194923.4 C-0.51 C
195022.8 C-1.10 C
195122.6 C-1.34 C
195223.2 C-0.74 C
195323.3 C-0.61 C
195623.7 C-0.22 C
195823.0 C-0.96 C
195923.5 C-0.41 C
196023.5 C-0.41 C
196123.6 C-0.33 C
196224.1 C+0.15 C
196324.4 C+0.42 C
196524.1 C+0.18 C
196624.2 C+0.25 C
196724.2 C+0.27 C
196824.2 C+0.26 C
197024.5 C+0.53 C
197124.2 C+0.27 C
197225.1 C+1.12 C
197324.9 C+1.00 C
197423.8 C-0.19 C
197523.4 C-0.54 C
197623.6 C-0.36 C
197723.7 C-0.27 C
197823.8 C-0.15 C
197924.1 C+0.12 C
198024.1 C+0.18 C
198123.6 C-0.33 C
198224.3 C+0.39 C
198323.8 C-0.17 C
198423.3 C-0.62 C
198523.5 C-0.45 C
198623.8 C-0.11 C
198824.1 C+0.15 C
199024.0 C+0.04 C
199124.3 C+0.34 C
199223.7 C-0.28 C
199424.6 C+0.66 C
199724.0 C+0.08 C
199824.2 C+0.22 C
200023.8 C-0.10 C
200123.2 C-0.74 C
200223.9 C-0.09 C
200323.6 C-0.37 C
200422.8 C-1.13 C
200523.8 C-0.17 C
200622.9 C-1.00 C
200722.8 C-1.13 C
200822.9 C-1.05 C
200923.1 C-0.81 C

The annual mean temperature here has fallen by 0.2 C (0.1 to 0.3) per decade over 1945 to 2009. In Fahrenheit: 0.3 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 54 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Chietla
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.2 C (-0.3 to -0.1) per decade-0.3 F (-0.6 to -0.1) per decade1945 to 200954Fall
Mean daily maximum-0.5 C (-0.7 to -0.2) per decade-0.8 F (-1.3 to -0.4) per decade1945 to 200954Fall
Mean daily minimum0.10 C (0.00 to 0.21) per decade0.18 F (-0.01 to 0.37) per decade1945 to 200954Not 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

1944 to 2009
Yearly extremes at Chietla: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)47.8 C (118.0 F)194638.9 C (102.0 F)64
Coldest night (TNn)0.6 C (33.1 F)19617.2 C (45.0 F)64
Wettest day (Rx1day)101.9 mm (4.0 in)200961.0 mm (2.4 in)65
Wettest five days (Rx5day)200.4 mm (7.9 in)2000112.4 mm (4.4 in)65
Longest dry spell (CDD)150 days197081 days65

Hottest day (TXx)

Hottest day (TXx) at Chietla by year The hottest day of the year at Chietla, 1944 to 2009. The record is 47.8 C (118.0 F) in 1946, marked on the chart; the median year is 38.9 C (102.0 F). 35404550196019802000Record: 47.8 C (118.0 F) in 1946
The hottest day of the year at Chietla, 1944 to 2009. The record is 47.8 C (118.0 F) in 1946, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Chietla by year
YearHottest day (TXx)
1944n/a
194545.0 C (113.0 F)
194647.8 C (118.0 F)
194745.0 C (113.0 F)
194843.9 C (111.0 F)
194940.6 C (105.1 F)
195040.6 C (105.1 F)
195141.7 C (107.1 F)
195240.6 C (105.1 F)
195338.9 C (102.0 F)
195437.8 C (100.0 F)
195545.0 C (113.0 F)
195637.8 C (100.0 F)
195840.0 C (104.0 F)
195938.9 C (102.0 F)
196038.3 C (100.9 F)
196138.3 C (100.9 F)
196238.3 C (100.9 F)
196339.4 C (102.9 F)
196440.6 C (105.1 F)
196539.4 C (102.9 F)
196638.9 C (102.0 F)
196740.0 C (104.0 F)
196837.2 C (99.0 F)
196939.4 C (102.9 F)
197039.4 C (102.9 F)
197139.4 C (102.9 F)
197239.4 C (102.9 F)
197340.6 C (105.1 F)
197438.9 C (102.0 F)
197537.8 C (100.0 F)
197638.3 C (100.9 F)
197737.8 C (100.0 F)
197839.4 C (102.9 F)
197937.8 C (100.0 F)
198038.9 C (102.0 F)
198138.3 C (100.9 F)
198240.0 C (104.0 F)
198340.0 C (104.0 F)
198440.6 C (105.1 F)
198538.3 C (100.9 F)
198638.9 C (102.0 F)
198737.8 C (100.0 F)
198839.4 C (102.9 F)
198938.9 C (102.0 F)
199037.8 C (100.0 F)
199139.4 C (102.9 F)
199237.2 C (99.0 F)
199338.9 C (102.0 F)
199438.9 C (102.0 F)
199538.9 C (102.0 F)
199639.4 C (102.9 F)
199738.9 C (102.0 F)
199838.9 C (102.0 F)
199941.7 C (107.1 F)
200038.9 C (102.0 F)
200138.9 C (102.0 F)
200237.8 C (100.0 F)
200337.8 C (100.0 F)
200435.6 C (96.1 F)
200538.9 C (102.0 F)
200637.8 C (100.0 F)
200735.0 C (95.0 F)
200836.7 C (98.1 F)
200937.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at Chietla by year The coldest night of the year at Chietla, 1944 to 2009. The record is 0.6 C (33.1 F) in 1961, marked on the chart; the median year is 7.2 C (45.0 F). 02.557.510196019802000Record: 0.6 C (33.1 F) in 1961
The coldest night of the year at Chietla, 1944 to 2009. The record is 0.6 C (33.1 F) in 1961, marked on the chart; the median year is 7.2 C (45.0 F).
Coldest night (TNn) at Chietla by year
YearColdest night (TNn)
1944n/a
19455.6 C (42.1 F)
19468.9 C (48.0 F)
194710.0 C (50.0 F)
19487.8 C (46.0 F)
19495.0 C (41.0 F)
19505.0 C (41.0 F)
19515.6 C (42.1 F)
19525.6 C (42.1 F)
19533.9 C (39.0 F)
19545.6 C (42.1 F)
19557.2 C (45.0 F)
19563.9 C (39.0 F)
19587.8 C (46.0 F)
19598.3 C (46.9 F)
19607.2 C (45.0 F)
19610.6 C (33.1 F)
19628.3 C (46.9 F)
19638.3 C (46.9 F)
19649.4 C (48.9 F)
19657.8 C (46.0 F)
19667.8 C (46.0 F)
19675.6 C (42.1 F)
19685.6 C (42.1 F)
19698.9 C (48.0 F)
19708.9 C (48.0 F)
19718.3 C (46.9 F)
19727.2 C (45.0 F)
19736.7 C (44.1 F)
19749.4 C (48.9 F)
19757.2 C (45.0 F)
19767.2 C (45.0 F)
19777.2 C (45.0 F)
19789.4 C (48.9 F)
19797.2 C (45.0 F)
19807.2 C (45.0 F)
19817.2 C (45.0 F)
19826.7 C (44.1 F)
19837.2 C (45.0 F)
19846.1 C (43.0 F)
19857.8 C (46.0 F)
19866.1 C (43.0 F)
19875.0 C (41.0 F)
19886.7 C (44.1 F)
19895.0 C (41.0 F)
19907.2 C (45.0 F)
19918.9 C (48.0 F)
19927.8 C (46.0 F)
19935.0 C (41.0 F)
19947.2 C (45.0 F)
19958.3 C (46.9 F)
19966.1 C (43.0 F)
19975.6 C (42.1 F)
19985.6 C (42.1 F)
19995.6 C (42.1 F)
20007.8 C (46.0 F)
200110.0 C (50.0 F)
20025.6 C (42.1 F)
20035.6 C (42.1 F)
20047.8 C (46.0 F)
20057.8 C (46.0 F)
20063.9 C (39.0 F)
20078.9 C (48.0 F)
20088.9 C (48.0 F)
20097.8 C (46.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Chietla by year The wettest day of the year at Chietla, 1944 to 2009. The record is 101.9 mm (4.0 in) in 2009, marked on the chart; the median year is 61.0 mm (2.4 in). 050100150196019802000Record: 101.9 mm (4.0 in) in 2009
The wettest day of the year at Chietla, 1944 to 2009. The record is 101.9 mm (4.0 in) in 2009, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest day (Rx1day) at Chietla by year
YearWettest day (Rx1day)
19440.0 mm (0.00 in)
194562.0 mm (2.4 in)
194668.8 mm (2.7 in)
194750.3 mm (2.0 in)
194863.0 mm (2.5 in)
194952.3 mm (2.1 in)
195047.0 mm (1.9 in)
195151.8 mm (2.0 in)
195252.8 mm (2.1 in)
195351.3 mm (2.0 in)
195473.4 mm (2.9 in)
195580.8 mm (3.2 in)
195647.5 mm (1.9 in)
195870.9 mm (2.8 in)
195967.3 mm (2.6 in)
196049.3 mm (1.9 in)
196173.9 mm (2.9 in)
196261.5 mm (2.4 in)
196374.4 mm (2.9 in)
196441.4 mm (1.6 in)
196561.0 mm (2.4 in)
196652.8 mm (2.1 in)
196748.8 mm (1.9 in)
196831.8 mm (1.3 in)
196940.4 mm (1.6 in)
197077.5 mm (3.1 in)
197176.5 mm (3.0 in)
197267.8 mm (2.7 in)
197369.3 mm (2.7 in)
197447.8 mm (1.9 in)
197541.9 mm (1.6 in)
197657.4 mm (2.3 in)
197763.8 mm (2.5 in)
197882.8 mm (3.3 in)
197975.9 mm (3.0 in)
198093.0 mm (3.7 in)
198161.5 mm (2.4 in)
198256.9 mm (2.2 in)
198386.4 mm (3.4 in)
198458.4 mm (2.3 in)
198559.9 mm (2.4 in)
198662.0 mm (2.4 in)
198742.9 mm (1.7 in)
198873.9 mm (2.9 in)
198952.8 mm (2.1 in)
199064.3 mm (2.5 in)
199130.0 mm (1.2 in)
199258.4 mm (2.3 in)
199335.1 mm (1.4 in)
199451.6 mm (2.0 in)
199552.6 mm (2.1 in)
199658.7 mm (2.3 in)
199748.3 mm (1.9 in)
199866.3 mm (2.6 in)
199967.1 mm (2.6 in)
200066.8 mm (2.6 in)
200141.1 mm (1.6 in)
200256.1 mm (2.2 in)
200392.2 mm (3.6 in)
200450.5 mm (2.0 in)
200578.5 mm (3.1 in)
200686.4 mm (3.4 in)
200763.0 mm (2.5 in)
200881.8 mm (3.2 in)
2009101.9 mm (4.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chietla by year The wettest five days of the year at Chietla, 1944 to 2009. The record is 200.4 mm (7.9 in) in 2000, marked on the chart; the median year is 112.4 mm (4.4 in). 0100200300196019802000Record: 200.4 mm (7.9 in) in 2000
The wettest five days of the year at Chietla, 1944 to 2009. The record is 200.4 mm (7.9 in) in 2000, marked on the chart; the median year is 112.4 mm (4.4 in).
Wettest five days (Rx5day) at Chietla by year
YearWettest five days (Rx5day)
19440.0 mm (0.00 in)
1945121.4 mm (4.8 in)
1946113.3 mm (4.5 in)
1947146.4 mm (5.8 in)
1948128.1 mm (5.0 in)
1949103.5 mm (4.1 in)
1950105.2 mm (4.1 in)
1951118.7 mm (4.7 in)
1952105.9 mm (4.2 in)
1953144.8 mm (5.7 in)
1954112.4 mm (4.4 in)
1955122.9 mm (4.8 in)
1956104.4 mm (4.1 in)
1958124.8 mm (4.9 in)
1959151.4 mm (6.0 in)
196093.0 mm (3.7 in)
1961101.9 mm (4.0 in)
1962104.0 mm (4.1 in)
1963152.6 mm (6.0 in)
196490.6 mm (3.6 in)
196599.9 mm (3.9 in)
196695.3 mm (3.8 in)
196777.5 mm (3.1 in)
196891.3 mm (3.6 in)
196973.2 mm (2.9 in)
1970157.8 mm (6.2 in)
1971139.8 mm (5.5 in)
1972139.2 mm (5.5 in)
1973109.8 mm (4.3 in)
1974101.5 mm (4.0 in)
197574.4 mm (2.9 in)
1976126.5 mm (5.0 in)
1977141.7 mm (5.6 in)
1978178.3 mm (7.0 in)
1979133.3 mm (5.2 in)
1980103.9 mm (4.1 in)
1981153.5 mm (6.0 in)
1982122.7 mm (4.8 in)
1983169.9 mm (6.7 in)
1984151.9 mm (6.0 in)
198597.0 mm (3.8 in)
198678.0 mm (3.1 in)
1987101.0 mm (4.0 in)
1988113.5 mm (4.5 in)
198989.8 mm (3.5 in)
199094.1 mm (3.7 in)
199176.8 mm (3.0 in)
1992116.6 mm (4.6 in)
199392.1 mm (3.6 in)
199496.6 mm (3.8 in)
1995101.2 mm (4.0 in)
199695.8 mm (3.8 in)
199780.8 mm (3.2 in)
1998115.6 mm (4.6 in)
199985.7 mm (3.4 in)
2000200.4 mm (7.9 in)
200192.6 mm (3.6 in)
2002133.8 mm (5.3 in)
2003194.4 mm (7.7 in)
200496.6 mm (3.8 in)
2005116.8 mm (4.6 in)
2006156.3 mm (6.2 in)
2007121.5 mm (4.8 in)
2008137.8 mm (5.4 in)
2009186.8 mm (7.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chietla by year The longest dry spell of the year at Chietla, 1944 to 2009. The record is 150 days in 1970, marked on the chart; the median year is 81 days. 050100150196019802000Record: 150 days in 1970
The longest dry spell of the year at Chietla, 1944 to 2009. The record is 150 days in 1970, marked on the chart; the median year is 81 days.
Longest dry spell (CDD) at Chietla by year
YearLongest dry spell (CDD)
194431 days
1945109 days
194650 days
194783 days
194858 days
194995 days
195068 days
195177 days
195292 days
1953143 days
195453 days
195576 days
195680 days
195849 days
1959101 days
1960122 days
1961141 days
1962103 days
196378 days
1964119 days
196583 days
196669 days
196785 days
196844 days
196962 days
1970150 days
197191 days
1972107 days
197395 days
197476 days
1975134 days
197675 days
197758 days
197865 days
197960 days
198098 days
198162 days
198281 days
198383 days
198485 days
198598 days
1986116 days
198780 days
198881 days
198951 days
199099 days
1991113 days
199270 days
199372 days
199461 days
199528 days
199671 days
199777 days
1998146 days
199981 days
2000126 days
200149 days
200258 days
2003133 days
200459 days
200586 days
200683 days
200769 days
2008111 days
200962 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

60 years, 1945 to 2009

A day with at least 60.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 101.1 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Chietla: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years60.8 mm (2.4 in)
5 years74.5 mm (2.9 in)
10 years82.2 mm (3.2 in)
25 years90.7 mm (3.6 in)
50 years96.2 mm (3.8 in)
100 years101.1 mm (4.0 in)Longer than the 60 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, 60 years of values from 1945 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: 101.9 mm (4.0 in) in 2009; 93.0 mm (3.7 in) in 1980; 92.2 mm (3.6 in) in 2003.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Chietla, at 2000. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2000 ran 0.7 C (1.2 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Chietla, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
2000+0.7+1.2likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

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