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Coacoyulillo (Cfe) Weather Records (MXN00012020)

Record envelope, standing records and threshold days for Coacoyulillo (Cfe) (MXN00012020), Mexico, with 38 years of record.

Key Facts for Coacoyulillo (Cfe)

  • Coacoyulillo (Cfe) (MXN00012020) is a weather station in Mexico at 17.33 latitude and -99.63 longitude, 530 m (1,738 ft) above sea level.
  • The station reports from 1963 to 2000, 38 years of record.
  • 1,464 records set at Coacoyulillo (Cfe) still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Coacoyulillo (Cfe) tied a daily record low maximum temperature of 30.6 C (87.1 F) on 20 November 2000.

About the Station

  • Location: Mexico, 17.33 latitude, -99.63 longitude.
  • Elevation: 530 m (1,738 ft).
  • Period of record: 1963 to 2000, 38 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 Coacoyulillo (Cfe), with 2026 drawn through them The band shows the record high and record low for each calendar day at Coacoyulillo (Cfe). 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 Coacoyulillo (Cfe). 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 Coacoyulillo (Cfe), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan41.1 C (106.0 F)7.8 C (46.0 F)n/an/a
Feb40.0 C (104.0 F)8.9 C (48.0 F)n/an/a
Mar40.6 C (105.1 F)9.4 C (48.9 F)n/an/a
Apr42.8 C (109.0 F)11.1 C (52.0 F)n/an/a
May41.7 C (107.1 F)12.2 C (54.0 F)n/an/a
Jun40.6 C (105.1 F)14.4 C (57.9 F)n/an/a
Jul40.0 C (104.0 F)15.0 C (59.0 F)n/an/a
Aug38.3 C (100.9 F)14.4 C (57.9 F)n/an/a
Sep38.9 C (102.0 F)16.7 C (62.1 F)n/an/a
Oct39.4 C (102.9 F)15.0 C (59.0 F)n/an/a
Nov39.4 C (102.9 F)10.0 C (50.0 F)n/an/a
Dec39.4 C (102.9 F)10.0 C (50.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Coacoyulillo (Cfe) by the year they were set 1,464 records at Coacoyulillo (Cfe) still stand. 1969 holds the most, with 92. 02550751001963: 311964: 381965: 431966: 671967: 471968: 411969: 921970: 791971: 901972: 491973: 361974: 521975: 491976: 341977: 301978: 321979: 441980: 861981: 501982: 171983: 331984: 91985: 111986: 311987: 421989: 181990: 491991: 281992: 241993: 211994: 81995: 131996: 361997: 421998: 421999: 92000: 411963196719711975197919831987199219962000
1,464 records at Coacoyulillo (Cfe) still stand. 1969 holds the most, with 92.
Standing records at Coacoyulillo (Cfe) by the year they were set
Year setStanding records
196331
196438
196543
196667
196747
196841
196992
197079
197190
197249
197336
197452
197549
197634
197730
197832
197944
198086
198150
198217
198333
19849
198511
198631
198742
198918
199049
199128
199224
199321
19948
199513
199636
199742
199842
19999
200041

All-Time Record Progression

1 new records
When Coacoyulillo (Cfe) set new all-time records 1 all-time records were set at Coacoyulillo (Cfe) between 13 January 1997 and 13 January 1997. Each dot is a new record. Record low minimum temperature13 January 1997: Record low minimum temperature 7.8 C (46.0 F)
1 all-time records were set at Coacoyulillo (Cfe) between 13 January 1997 and 13 January 1997. Each dot is a new record.
When Coacoyulillo (Cfe) set new all-time records
DateKindDetail
1997-01-13Record low minimum temperatureRecord low minimum temperature 7.8 C (46.0 F)

Wettest Day of Each Month

Jun: 214.9 mm (8.5 in)
Record daily precipitation for each month at Coacoyulillo (Cfe) The wettest day on record for each calendar month at Coacoyulillo (Cfe). The most was 214.9 mm (8.5 in) on 22 June 1973. 0100200300 Jan: 54.4 mm (2.1 in), 23 January 1980 Jan Feb: 35.1 mm (1.4 in), 4 February 1968 Feb Mar: 18.3 mm (0.7 in), 19 March 1971 Mar Apr: 68.3 mm (2.7 in), 3 April 1966 Apr May: 90.4 mm (3.6 in), 30 May 1978 May Jun: 214.9 mm (8.5 in), 22 June 1973 Jun Jul: 106.4 mm (4.2 in), 23 July 1978 Jul Aug: 98.8 mm (3.9 in), 27 August 1981 Aug Sep: 103.4 mm (4.1 in), 10 September 1974 Sep Oct: 174.8 mm (6.9 in), 7 October 1976 Oct Nov: 41.9 mm (1.6 in), 10 November 1972 Nov Dec: 35.3 mm (1.4 in), 1 December 1983 Dec
The wettest day on record for each calendar month at Coacoyulillo (Cfe). The most was 214.9 mm (8.5 in) on 22 June 1973.
Record daily precipitation for each month at Coacoyulillo (Cfe)
MonthRecord daily precipitation (mm)Date
Jan54.4 mm (2.1 in)23 January 1980
Feb35.1 mm (1.4 in)4 February 1968
Mar18.3 mm (0.7 in)19 March 1971
Apr68.3 mm (2.7 in)3 April 1966
May90.4 mm (3.6 in)30 May 1978
Jun214.9 mm (8.5 in)22 June 1973
Jul106.4 mm (4.2 in)23 July 1978
Aug98.8 mm (3.9 in)27 August 1981
Sep103.4 mm (4.1 in)10 September 1974
Oct174.8 mm (6.9 in)7 October 1976
Nov41.9 mm (1.6 in)10 November 1972
Dec35.3 mm (1.4 in)1 December 1983

Period of Record Coverage

1963 to 2000
Days with data per year at Coacoyulillo (Cfe) 37 years of record at Coacoyulillo (Cfe), 1963 to 2000. 7 years have data for under 90 percent of days and are left out of rankings: 1963, 1973, 1984, 1994, 1997, 1998, 1999. 1963: 237 of 365 days1964: 365 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 364 of 365 days1971: 364 of 365 days1972: 366 of 366 days1973: 273 of 365 days1974: 365 of 365 days1975: 364 of 365 days1976: 365 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 362 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 363 of 365 days1984: 119 of 366 days1985: 364 of 365 days1986: 365 of 365 days1987: 364 of 365 days1989: 365 of 365 days1990: 365 of 365 days1991: 364 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 306 of 365 days1995: 362 of 365 days1996: 365 of 366 days1997: 304 of 365 days1998: 327 of 365 days1999: 151 of 365 days2000: 366 of 366 days19651970197519801985199019952000
37 years of record at Coacoyulillo (Cfe), 1963 to 2000. 7 years have data for under 90 percent of days and are left out of rankings: 1963, 1973, 1984, 1994, 1997, 1998, 1999.
Days with data per year at Coacoyulillo (Cfe)
YearDays with dataShare of yearComplete
196323765%No
1964365100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970364100%Yes
1971364100%Yes
1972366100%Yes
197327375%No
1974365100%Yes
1975364100%Yes
1976365100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
198036299%Yes
1981364100%Yes
1982365100%Yes
198336399%Yes
198411933%No
1985364100%Yes
1986365100%Yes
1987364100%Yes
1989365100%Yes
1990365100%Yes
1991364100%Yes
1992366100%Yes
1993365100%Yes
199430684%No
199536299%Yes
1996365100%Yes
199730483%No
199832790%No
199915141%No
2000366100%Yes

Latest Records

20
Latest records at Coacoyulillo (Cfe)
DateStationRecordValueBeat old record byOld record stoodSignificance
20 November 2000Coacoyulillo (Cfe), MXdaily low max (Tie)30.6 C (87.1 F)tie3 years0 of 100 (Routine)
30 September 2000Coacoyulillo (Cfe), MXdaily high max (Tie)35.0 C (95.0 F)tie25 years2 of 100 (Routine)
29 September 2000Coacoyulillo (Cfe), MXdaily low min (Tie)18.9 C (66.0 F)tie4 years1 of 100 (Routine)
23 September 2000Coacoyulillo (Cfe), MXmonthly low min (Tie)16.7 C (62.1 F)tie15 years4 of 100 (Routine)
22 September 2000Coacoyulillo (Cfe), MXmonthly low min (Tie)16.7 C (62.1 F)tie15 years4 of 100 (Routine)
21 September 2000Coacoyulillo (Cfe), MXmonthly low min (Tie)16.7 C (62.1 F)tie15 years4 of 100 (Routine)
19 September 2000Coacoyulillo (Cfe), MXdaily low max26.7 C (80.1 F)1.1 C (2.0 F)11 years10 of 100 (Routine)
28 August 2000Coacoyulillo (Cfe), MXdaily rain55.9 mm (2.2 in)14.0 mm (0.6 in)13 years15 of 100 (Routine)
25 August 2000Coacoyulillo (Cfe), MXdaily low min17.8 C (64.0 F)1.6 C (2.9 F)23 years25 of 100 (Routine)
24 August 2000Coacoyulillo (Cfe), MXdaily low min (Tie)18.3 C (64.9 F)tie35 years3 of 100 (Routine)
21 August 2000Coacoyulillo (Cfe), MXdaily low min18.3 C (64.9 F)0.6 C (1.1 F)3 years9 of 100 (Routine)
19 August 2000Coacoyulillo (Cfe), MXdaily low min16.7 C (62.1 F)2.2 C (4.0 F)35 years35 of 100 (Notable)
18 August 2000Coacoyulillo (Cfe), MXdaily high max (Tie)36.1 C (97.0 F)tie9 years1 of 100 (Routine)
17 August 2000Coacoyulillo (Cfe), MXdaily low min17.8 C (64.0 F)0.5 C (0.9 F)25 years15 of 100 (Routine)
16 August 2000Coacoyulillo (Cfe), MXdaily low min16.7 C (62.1 F)1.1 C (2.0 F)33 years23 of 100 (Routine)
5 August 2000Coacoyulillo (Cfe), MXdaily low min18.3 C (64.9 F)0.6 C (1.1 F)11 years12 of 100 (Routine)
31 July 2000Coacoyulillo (Cfe), MXdaily rain83.3 mm (3.3 in)50.0 mm (2.0 in)20 years41 of 100 (Notable)
29 July 2000Coacoyulillo (Cfe), MXdaily low min16.7 C (62.1 F)1.6 C (2.9 F)27 years27 of 100 (Routine)
28 July 2000Coacoyulillo (Cfe), MXdaily rain61.5 mm (2.4 in)32.0 mm (1.3 in)28 years31 of 100 (Routine)
22 July 2000Coacoyulillo (Cfe), MXdaily low min17.2 C (63.0 F)1.1 C (2.0 F)26 years21 of 100 (Routine)

Climate Trend

30 complete years, 1964 to 2000
Annual mean temperature at Coacoyulillo (Cfe) as warming stripes, 1964 to 2000 One stripe for each of 30 complete years at Coacoyulillo (Cfe), 1964 to 2000. Blue stripes are years cooler than the station's own mean of 26.4 C (79.6 F); red stripes are warmer. The coolest year was 2000, at 25.4 C (77.7 F), and the warmest was 1980, at 27.6 C (81.6 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1964: 26.4 C, 0.0 C from the station mean1965: 26.3 C, -0.1 C from the station mean1966: 26.1 C, -0.3 C from the station mean1967: 25.8 C, -0.6 C from the station mean1968: 26.3 C, -0.1 C from the station mean1969: 26.9 C, +0.5 C from the station mean1970: 26.5 C, +0.1 C from the station mean1971: 26.3 C, -0.1 C from the station mean1972: 27.1 C, +0.7 C from the station mean1974: 26.7 C, +0.3 C from the station mean1975: 26.8 C, +0.3 C from the station mean1976: 26.4 C, 0.0 C from the station mean1977: 26.8 C, +0.4 C from the station mean1978: 26.6 C, +0.1 C from the station mean1979: 26.8 C, +0.4 C from the station mean1980: 27.6 C, +1.1 C from the station mean1981: 26.8 C, +0.4 C from the station mean1982: 26.5 C, +0.1 C from the station mean1983: 25.8 C, -0.6 C from the station mean1985: 26.0 C, -0.5 C from the station mean1986: 26.4 C, 0.0 C from the station mean1987: 26.8 C, +0.4 C from the station mean1989: 26.0 C, -0.4 C from the station mean1990: 26.2 C, -0.2 C from the station mean1991: 26.5 C, +0.1 C from the station mean1992: 26.5 C, +0.1 C from the station mean1993: 26.3 C, -0.2 C from the station mean1995: 26.5 C, 0.0 C from the station mean1996: 25.9 C, -0.5 C from the station mean2000: 25.4 C, -1.0 C from the station mean19641970197519801985199019952000
One stripe for each of 30 complete years at Coacoyulillo (Cfe), 1964 to 2000. Blue stripes are years cooler than the station's own mean of 26.4 C (79.6 F); red stripes are warmer. The coolest year was 2000, at 25.4 C (77.7 F), and the warmest was 1980, at 27.6 C (81.6 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Coacoyulillo (Cfe) as warming stripes, 1964 to 2000
YearAnnual mean temperatureDifference from the station mean
196426.4 C-0.02 C
196526.3 C-0.13 C
196626.1 C-0.34 C
196725.8 C-0.59 C
196826.3 C-0.14 C
196926.9 C+0.45 C
197026.5 C+0.08 C
197126.3 C-0.14 C
197227.1 C+0.68 C
197426.7 C+0.25 C
197526.8 C+0.34 C
197626.4 C+0.00 C
197726.8 C+0.35 C
197826.6 C+0.13 C
197926.8 C+0.38 C
198027.6 C+1.13 C
198126.8 C+0.39 C
198226.5 C+0.07 C
198325.8 C-0.63 C
198526.0 C-0.47 C
198626.4 C-0.03 C
198726.8 C+0.35 C
198926.0 C-0.40 C
199026.2 C-0.24 C
199126.5 C+0.07 C
199226.5 C+0.11 C
199326.3 C-0.16 C
199526.5 C+0.04 C
199625.9 C-0.52 C
200025.4 C-1.01 C

The fitted trend in annual mean temperature here over 1964 to 2000 is -0.11 C (-0.27 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.5 to 0.1) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Coacoyulillo (Cfe)
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.11 C (-0.27 to 0.05) per decade-0.2 F (-0.5 to 0.1) per decade1964 to 200030Not clearly different from zero
Mean daily maximum0.1 C (-0.1 to 0.3) per decade0.2 F (-0.2 to 0.6) per decade1964 to 200030Not clearly different from zero
Mean daily minimum-0.3 C (-0.5 to -0.2) per decade-0.6 F (-0.9 to -0.3) per decade1964 to 200030Fall

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

1963 to 2000
Yearly extremes at Coacoyulillo (Cfe): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)198140.0 C (104.0 F)37
Coldest night (TNn)7.8 C (46.0 F)199710.0 C (50.0 F)37
Wettest day (Rx1day)214.9 mm (8.5 in)197372.4 mm (2.9 in)37
Wettest five days (Rx5day)286.9 mm (11.3 in)1973151.7 mm (6.0 in)37
Longest dry spell (CDD)159 days199888 days37

Hottest day (TXx)

Hottest day (TXx) at Coacoyulillo (Cfe) by year The hottest day of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 42.8 C (109.0 F) in 1981, marked on the chart; the median year is 40.0 C (104.0 F). 36384042441970198019902000Record: 42.8 C (109.0 F) in 1981
The hottest day of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 42.8 C (109.0 F) in 1981, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Coacoyulillo (Cfe) by year
YearHottest day (TXx)
196340.0 C (104.0 F)
196440.0 C (104.0 F)
196540.0 C (104.0 F)
196640.0 C (104.0 F)
196738.9 C (102.0 F)
196840.0 C (104.0 F)
196940.0 C (104.0 F)
197040.0 C (104.0 F)
197140.0 C (104.0 F)
197240.6 C (105.1 F)
197340.0 C (104.0 F)
197441.1 C (106.0 F)
197541.7 C (107.1 F)
197641.1 C (106.0 F)
197740.0 C (104.0 F)
197840.0 C (104.0 F)
197940.0 C (104.0 F)
198041.7 C (107.1 F)
198142.8 C (109.0 F)
198240.6 C (105.1 F)
198339.4 C (102.9 F)
198437.2 C (99.0 F)
198539.4 C (102.9 F)
198640.0 C (104.0 F)
198740.0 C (104.0 F)
198939.4 C (102.9 F)
199041.7 C (107.1 F)
199140.0 C (104.0 F)
199240.0 C (104.0 F)
199340.6 C (105.1 F)
199439.4 C (102.9 F)
199540.0 C (104.0 F)
199639.4 C (102.9 F)
199740.0 C (104.0 F)
199840.0 C (104.0 F)
199940.0 C (104.0 F)
200041.1 C (106.0 F)

Coldest night (TNn)

Coldest night (TNn) at Coacoyulillo (Cfe) by year The coldest night of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 7.8 C (46.0 F) in 1997, marked on the chart; the median year is 10.0 C (50.0 F). 681012141970198019902000Record: 7.8 C (46.0 F) in 1997
The coldest night of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 7.8 C (46.0 F) in 1997, marked on the chart; the median year is 10.0 C (50.0 F).
Coldest night (TNn) at Coacoyulillo (Cfe) by year
YearColdest night (TNn)
196310.0 C (50.0 F)
196411.7 C (53.1 F)
19659.4 C (48.9 F)
196610.0 C (50.0 F)
196710.6 C (51.1 F)
196810.0 C (50.0 F)
196912.2 C (54.0 F)
19708.9 C (48.0 F)
197110.0 C (50.0 F)
197210.6 C (51.1 F)
197310.0 C (50.0 F)
197411.1 C (52.0 F)
197511.7 C (53.1 F)
197610.0 C (50.0 F)
197711.7 C (53.1 F)
197810.6 C (51.1 F)
197910.6 C (51.1 F)
198011.1 C (52.0 F)
19819.4 C (48.9 F)
198211.1 C (52.0 F)
198310.0 C (50.0 F)
198410.0 C (50.0 F)
198511.1 C (52.0 F)
19869.4 C (48.9 F)
198710.0 C (50.0 F)
198910.0 C (50.0 F)
199011.7 C (53.1 F)
199110.0 C (50.0 F)
199210.0 C (50.0 F)
199311.7 C (53.1 F)
199412.2 C (54.0 F)
199511.7 C (53.1 F)
19969.4 C (48.9 F)
19977.8 C (46.0 F)
19988.3 C (46.9 F)
19998.9 C (48.0 F)
20008.9 C (48.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Coacoyulillo (Cfe) by year The wettest day of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 214.9 mm (8.5 in) in 1973, marked on the chart; the median year is 72.4 mm (2.9 in). 01002003001970198019902000Record: 214.9 mm (8.5 in) in 1973
The wettest day of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 214.9 mm (8.5 in) in 1973, marked on the chart; the median year is 72.4 mm (2.9 in).
Wettest day (Rx1day) at Coacoyulillo (Cfe) by year
YearWettest day (Rx1day)
196393.0 mm (3.7 in)
196476.5 mm (3.0 in)
196568.3 mm (2.7 in)
196668.3 mm (2.7 in)
196786.4 mm (3.4 in)
196868.1 mm (2.7 in)
196972.9 mm (2.9 in)
197072.4 mm (2.9 in)
197170.4 mm (2.8 in)
197256.9 mm (2.2 in)
1973214.9 mm (8.5 in)
1974103.4 mm (4.1 in)
197575.4 mm (3.0 in)
1976174.8 mm (6.9 in)
197765.8 mm (2.6 in)
1978106.4 mm (4.2 in)
197955.4 mm (2.2 in)
198079.0 mm (3.1 in)
198198.8 mm (3.9 in)
198290.9 mm (3.6 in)
198396.3 mm (3.8 in)
198430.0 mm (1.2 in)
198561.5 mm (2.4 in)
198667.3 mm (2.6 in)
198754.9 mm (2.2 in)
198988.9 mm (3.5 in)
199063.0 mm (2.5 in)
199151.8 mm (2.0 in)
199287.9 mm (3.5 in)
199374.4 mm (2.9 in)
199462.0 mm (2.4 in)
199546.0 mm (1.8 in)
199670.9 mm (2.8 in)
199765.3 mm (2.6 in)
199882.8 mm (3.3 in)
19990.0 mm (0.00 in)
200083.3 mm (3.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Coacoyulillo (Cfe) by year The wettest five days of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 286.9 mm (11.3 in) in 1973, marked on the chart; the median year is 151.7 mm (6.0 in). 01002003001970198019902000Record: 286.9 mm (11.3 in) in 1973
The wettest five days of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 286.9 mm (11.3 in) in 1973, marked on the chart; the median year is 151.7 mm (6.0 in).
Wettest five days (Rx5day) at Coacoyulillo (Cfe) by year
YearWettest five days (Rx5day)
1963214.4 mm (8.4 in)
1964189.8 mm (7.5 in)
1965120.6 mm (4.7 in)
1966133.6 mm (5.3 in)
1967212.9 mm (8.4 in)
1968147.1 mm (5.8 in)
1969147.5 mm (5.8 in)
1970190.3 mm (7.5 in)
1971157.3 mm (6.2 in)
1972150.8 mm (5.9 in)
1973286.9 mm (11.3 in)
1974181.1 mm (7.1 in)
1975259.9 mm (10.2 in)
1976272.1 mm (10.7 in)
1977146.0 mm (5.7 in)
1978163.1 mm (6.4 in)
1979138.8 mm (5.5 in)
1980137.5 mm (5.4 in)
1981233.3 mm (9.2 in)
1982173.5 mm (6.8 in)
1983141.8 mm (5.6 in)
198448.6 mm (1.9 in)
1985158.5 mm (6.2 in)
1986177.8 mm (7.0 in)
1987135.1 mm (5.3 in)
1989184.9 mm (7.3 in)
1990125.0 mm (4.9 in)
1991131.7 mm (5.2 in)
1992168.4 mm (6.6 in)
1993186.0 mm (7.3 in)
199494.5 mm (3.7 in)
1995110.7 mm (4.4 in)
1996154.1 mm (6.1 in)
199793.8 mm (3.7 in)
1998137.4 mm (5.4 in)
19990.0 mm (0.00 in)
2000151.7 mm (6.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Coacoyulillo (Cfe) by year The longest dry spell of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 159 days in 1998, marked on the chart; the median year is 88 days. 0501001502001970198019902000Record: 159 days in 1998
The longest dry spell of the year at Coacoyulillo (Cfe), 1963 to 2000. The record is 159 days in 1998, marked on the chart; the median year is 88 days.
Longest dry spell (CDD) at Coacoyulillo (Cfe) by year
YearLongest dry spell (CDD)
196327 days
1964128 days
1965132 days
196649 days
1967140 days
196863 days
196970 days
1970151 days
197177 days
197273 days
197394 days
1974125 days
1975100 days
197691 days
197788 days
197867 days
197965 days
198073 days
198150 days
198259 days
198370 days
198449 days
1985116 days
1986117 days
198763 days
1989121 days
199059 days
1991127 days
199294 days
1993158 days
199448 days
199549 days
1996133 days
199741 days
1998159 days
1999151 days
2000127 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

31 years, 1964 to 2000

A day with at least 73.0 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 158.8 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Coacoyulillo (Cfe): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years73.0 mm (2.9 in)
5 years91.6 mm (3.6 in)
10 years105.5 mm (4.2 in)
25 years125.1 mm (4.9 in)
50 years141.2 mm (5.6 in)Longer than the 31 years of record
100 years158.8 mm (6.3 in)Longer than the 31 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, 31 years of values from 1964 to 2000.

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: 174.8 mm (6.9 in) in 1976; 106.4 mm (4.2 in) in 1978; 103.4 mm (4.1 in) in 1974.

Download the Data

  • Data for Coacoyulillo (Cfe) standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Coacoyulillo (Cfe) 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).