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Copala Weather Records (MXN00012022)

Record envelope, standing records and threshold days for Copala (MXN00012022), Mexico, with 52 years of record.

Key Facts for Copala

  • Copala (MXN00012022) is a weather station in Mexico at 16.60 latitude and -98.97 longitude, 20 m (65 ft) above sea level.
  • The station reports from 1961 to 2012, 52 years of record.
  • 1,464 records set at Copala still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Copala set a daily record low maximum temperature of 25.0 C (77.0 F) on 29 November 2012.

About the Station

  • Location: Mexico, 16.60 latitude, -98.97 longitude.
  • Elevation: 20 m (65 ft).
  • Period of record: 1961 to 2012, 52 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Copala, with 2026 drawn through them The band shows the record high and record low for each calendar day at Copala. 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 Copala. 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 Copala, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan41.7 C (107.1 F)8.9 C (48.0 F)n/an/a
Feb41.7 C (107.1 F)8.9 C (48.0 F)n/an/a
Mar38.9 C (102.0 F)7.8 C (46.0 F)n/an/a
Apr38.9 C (102.0 F)10.6 C (51.1 F)n/an/a
May39.4 C (102.9 F)13.9 C (57.0 F)n/an/a
Jun39.4 C (102.9 F)10.6 C (51.1 F)n/an/a
Jul40.0 C (104.0 F)15.0 C (59.0 F)n/an/a
Aug39.4 C (102.9 F)15.0 C (59.0 F)n/an/a
Sep37.8 C (100.0 F)11.7 C (53.1 F)n/an/a
Oct37.2 C (99.0 F)13.9 C (57.0 F)n/an/a
Nov37.2 C (99.0 F)12.8 C (55.0 F)n/an/a
Dec41.7 C (107.1 F)10.0 C (50.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Copala by the year they were set 1,464 records at Copala still stand. 1990 holds the most, with 220. 01002003001961: 141962: 381963: 271964: 1611965: 1811966: 291967: 281968: 81969: 461970: 171971: 51972: 71973: 61974: 91975: 101976: 51977: 71978: 191979: 101980: 41981: 101982: 31983: 81984: 81985: 21987: 101988: 241989: 201990: 2201991: 781992: 111993: 111994: 121995: 411996: 31997: 101998: 31999: 12000: 32001: 12002: 112003: 12004: 522005: 502006: 252007: 592008: 132009: 612010: 362011: 272012: 19196119671973197919851992199820042010
1,464 records at Copala still stand. 1990 holds the most, with 220.
Standing records at Copala by the year they were set
Year setStanding records
196114
196238
196327
1964161
1965181
196629
196728
19688
196946
197017
19715
19727
19736
19749
197510
19765
19777
197819
197910
19804
198110
19823
19838
19848
19852
198710
198824
198920
1990220
199178
199211
199311
199412
199541
19963
199710
19983
19991
20003
20011
200211
20031
200452
200550
200625
200759
200813
200961
201036
201127
201219

All-Time Record Progression

1 new records
When Copala set new all-time records 1 all-time records were set at Copala between 25 December 2004 and 25 December 2004. Each dot is a new record. Record high maximum temperature25 December 2004: Record high maximum temperature 41.7 C (107.1 F)2005
1 all-time records were set at Copala between 25 December 2004 and 25 December 2004. Each dot is a new record.
When Copala set new all-time records
DateKindDetail
2004-12-25Record high maximum temperatureRecord high maximum temperature 41.7 C (107.1 F)

Wettest Day of Each Month

Jun: 319.8 mm (12.6 in)
Record daily precipitation for each month at Copala The wettest day on record for each calendar month at Copala. The most was 319.8 mm (12.6 in) on 15 June 1974. 0100200300400 Jan: 89.9 mm (3.5 in), 25 January 1980 Jan Feb: 127.8 mm (5.0 in), 4 February 2010 Feb Mar: 18.8 mm (0.7 in), 2 March 2001 Mar Apr: 132.3 mm (5.2 in), 5 April 1973 Apr May: 194.8 mm (7.7 in), 30 May 1978 May Jun: 319.8 mm (12.6 in), 15 June 1974 Jun Jul: 183.9 mm (7.2 in), 4 July 1990 Jul Aug: 195.8 mm (7.7 in), 22 August 2010 Aug Sep: 171.5 mm (6.8 in), 22 September 1982 Sep Oct: 225.8 mm (8.9 in), 8 October 1997 Oct Nov: 146.3 mm (5.8 in), 3 November 2002 Nov Dec: 79.8 mm (3.1 in), 17 December 1997 Dec
The wettest day on record for each calendar month at Copala. The most was 319.8 mm (12.6 in) on 15 June 1974.
Record daily precipitation for each month at Copala
MonthRecord daily precipitation (mm)Date
Jan89.9 mm (3.5 in)25 January 1980
Feb127.8 mm (5.0 in)4 February 2010
Mar18.8 mm (0.7 in)2 March 2001
Apr132.3 mm (5.2 in)5 April 1973
May194.8 mm (7.7 in)30 May 1978
Jun319.8 mm (12.6 in)15 June 1974
Jul183.9 mm (7.2 in)4 July 1990
Aug195.8 mm (7.7 in)22 August 2010
Sep171.5 mm (6.8 in)22 September 1982
Oct225.8 mm (8.9 in)8 October 1997
Nov146.3 mm (5.8 in)3 November 2002
Dec79.8 mm (3.1 in)17 December 1997

Period of Record Coverage

1961 to 2012
Days with data per year at Copala 52 years of record at Copala, 1961 to 2012. 12 years have data for under 90 percent of days and are left out of rankings: 1961, 1963, 1964, 1983, 1985, 1986, 1999, 2002 and others. 1961: 171 of 365 days1962: 337 of 365 days1963: 212 of 365 days1964: 219 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 356 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: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 335 of 365 days1983: 304 of 365 days1984: 364 of 366 days1985: 274 of 365 days1986: 282 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 61 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 295 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 167 of 365 days2006: 356 of 365 days2007: 365 of 365 days2008: 91 of 366 days2009: 321 of 365 days2010: 350 of 365 days2011: 355 of 365 days2012: 315 of 366 days19701980199020002010
52 years of record at Copala, 1961 to 2012. 12 years have data for under 90 percent of days and are left out of rankings: 1961, 1963, 1964, 1983, 1985, 1986, 1999, 2002 and others.
Days with data per year at Copala
YearDays with dataShare of yearComplete
196117147%No
196233792%Yes
196321258%No
196421960%No
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
196935698%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
198233592%Yes
198330483%No
198436499%Yes
198527475%No
198628277%No
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
19996117%No
2000365100%Yes
2001365100%Yes
200229581%No
2003365100%Yes
2004366100%Yes
200516746%No
200635698%Yes
2007365100%Yes
20089125%No
200932188%No
201035096%Yes
201135597%Yes
201231586%No

Latest Records

20
Latest records at Copala
DateStationRecordValueBeat old record byOld record stoodSignificance
29 November 2012Copala, MXdaily low max25.0 C (77.0 F)0.6 C (1.1 F)5 years8 of 100 (Routine)
25 November 2012Copala, MXdaily rain19.8 mm (0.8 in)14.0 mm (0.6 in)39 years20 of 100 (Routine)
25 November 2012Copala, MXdaily low max (Tie)25.0 C (77.0 F)tie6 years1 of 100 (Routine)
3 November 2012Copala, MXdaily low max25.0 C (77.0 F)0.6 C (1.1 F)3 years7 of 100 (Routine)
26 October 2012Copala, MXdaily rain47.8 mm (1.9 in)12.0 mm (0.5 in)7 years10 of 100 (Routine)
2 October 2012Copala, MXdaily low max25.6 C (78.1 F)1.1 C (2.0 F)30 years18 of 100 (Routine)
22 September 2012Copala, MXdaily low max26.7 C (80.1 F)1.1 C (2.0 F)48 years23 of 100 (Routine)
11 September 2012Copala, MXdaily low max25.6 C (78.1 F)1.1 C (2.0 F)48 years23 of 100 (Routine)
19 August 2012Copala, MXdaily low max (Tie)26.7 C (80.1 F)tie36 years3 of 100 (Routine)
13 August 2012Copala, MXdaily low max (Tie)25.6 C (78.1 F)tie2 years1 of 100 (Routine)
12 August 2012Copala, MXdaily rain81.8 mm (3.2 in)31.0 mm (1.2 in)31 years24 of 100 (Routine)
12 August 2012Copala, MXdaily low max25.0 C (77.0 F)1.7 C (3.1 F)2 years12 of 100 (Routine)
11 August 2012Copala, MXdaily rain142.7 mm (5.6 in)86.8 mm (3.4 in)43 years47 of 100 (Notable)
11 August 2012Copala, MXdaily low max (Tie)25.6 C (78.1 F)tie43 years4 of 100 (Routine)
10 August 2012Copala, MXdaily low max (Tie)26.7 C (80.1 F)tie2 years1 of 100 (Routine)
23 June 2012Copala, MXdaily low max (Tie)25.6 C (78.1 F)tie3 years1 of 100 (Routine)
13 June 2012Copala, MXdaily low max (Tie)27.8 C (82.0 F)tie47 years4 of 100 (Routine)
10 June 2012Copala, MXdaily rain101.9 mm (4.0 in)18.6 mm (0.7 in)12 years12 of 100 (Routine)
27 May 2012Copala, MXdaily low max (Tie)28.9 C (84.0 F)tie47 years4 of 100 (Routine)
16 May 2012Copala, MXdaily rain63.0 mm (2.5 in)58.2 mm (2.3 in)44 years38 of 100 (Notable)

Climate Trend

34 complete years, 1965 to 2010
Annual mean temperature at Copala as warming stripes, 1965 to 2010 One stripe for each of 34 complete years at Copala, 1965 to 2010. Blue stripes are years cooler than the station's own mean of 25.8 C (78.4 F); red stripes are warmer. The coolest year was 1965, at 22.6 C (72.7 F), and the warmest was 1990, at 28.9 C (84.0 F). The strongest colour marks a difference of 3.2 C (5.8 F). 1965: 22.6 C, -3.2 C from the station mean1966: 24.1 C, -1.7 C from the station mean1967: 25.3 C, -0.5 C from the station mean1968: 26.0 C, +0.2 C from the station mean1969: 26.6 C, +0.8 C from the station mean1970: 26.1 C, +0.3 C from the station mean1971: 24.8 C, -1.0 C from the station mean1972: 24.5 C, -1.3 C from the station mean1973: 24.1 C, -1.7 C from the station mean1976: 24.1 C, -1.7 C from the station mean1977: 24.5 C, -1.3 C from the station mean1978: 24.2 C, -1.6 C from the station mean1979: 24.7 C, -1.1 C from the station mean1980: 24.3 C, -1.5 C from the station mean1981: 24.3 C, -1.5 C from the station mean1987: 26.7 C, +0.9 C from the station mean1988: 27.0 C, +1.2 C from the station mean1989: 27.7 C, +1.9 C from the station mean1990: 28.9 C, +3.1 C from the station mean1991: 27.7 C, +1.9 C from the station mean1992: 26.9 C, +1.1 C from the station mean1993: 26.9 C, +1.1 C from the station mean1994: 27.1 C, +1.3 C from the station mean1995: 27.6 C, +1.8 C from the station mean1996: 26.9 C, +1.1 C from the station mean1997: 27.5 C, +1.7 C from the station mean1998: 27.4 C, +1.6 C from the station mean2000: 26.6 C, +0.8 C from the station mean2001: 26.6 C, +0.8 C from the station mean2003: 27.1 C, +1.3 C from the station mean2004: 27.7 C, +1.9 C from the station mean2006: 24.3 C, -1.5 C from the station mean2007: 22.9 C, -2.9 C from the station mean2010: 23.4 C, -2.4 C from the station mean1965197019751980198519901995200020052010
One stripe for each of 34 complete years at Copala, 1965 to 2010. Blue stripes are years cooler than the station's own mean of 25.8 C (78.4 F); red stripes are warmer. The coolest year was 1965, at 22.6 C (72.7 F), and the warmest was 1990, at 28.9 C (84.0 F). The strongest colour marks a difference of 3.2 C (5.8 F).
Annual mean temperature at Copala as warming stripes, 1965 to 2010
YearAnnual mean temperatureDifference from the station mean
196522.6 C-3.19 C
196624.1 C-1.67 C
196725.3 C-0.54 C
196826.0 C+0.21 C
196926.6 C+0.77 C
197026.1 C+0.33 C
197124.8 C-0.96 C
197224.5 C-1.28 C
197324.1 C-1.71 C
197624.1 C-1.71 C
197724.5 C-1.28 C
197824.2 C-1.65 C
197924.7 C-1.09 C
198024.3 C-1.46 C
198124.3 C-1.50 C
198726.7 C+0.85 C
198827.0 C+1.22 C
198927.7 C+1.85 C
199028.9 C+3.07 C
199127.7 C+1.93 C
199226.9 C+1.11 C
199326.9 C+1.10 C
199427.1 C+1.28 C
199527.6 C+1.78 C
199626.9 C+1.14 C
199727.5 C+1.68 C
199827.4 C+1.59 C
200026.6 C+0.84 C
200126.6 C+0.82 C
200327.1 C+1.26 C
200427.7 C+1.94 C
200624.3 C-1.52 C
200722.9 C-2.90 C
201023.4 C-2.44 C

The annual mean temperature here has risen by 0.43 C (0.02 to 0.83) per decade over 1965 to 2010. In Fahrenheit: 0.76 F (0.04 to 1.49) 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 Copala
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.43 C (0.02 to 0.83) per decade0.77 F (0.04 to 1.49) per decade1965 to 201034Rise
Mean daily maximum0.1 C (-0.3 to 0.6) per decade0.2 F (-0.6 to 1.1) per decade1965 to 201034Not clearly different from zero
Mean daily minimum0.7 C (0.3 to 1.1) per decade1.3 F (0.5 to 2.0) per decade1965 to 201034Rise

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

1961 to 2012
Yearly extremes at Copala: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)200435.6 C (96.1 F)52
Coldest night (TNn)7.8 C (46.0 F)196514.5 C (58.0 F)52
Wettest day (Rx1day)319.8 mm (12.6 in)1974131.3 mm (5.2 in)52
Wettest five days (Rx5day)804.3 mm (31.7 in)1974261.5 mm (10.3 in)52
Longest dry spell (CDD)168 days1991133 days52

Hottest day (TXx)

Hottest day (TXx) at Copala by year The hottest day of the year at Copala, 1961 to 2012. The record is 41.7 C (107.1 F) in 2004, marked on the chart; the median year is 35.6 C (96.1 F). 253035404519701980199020002010Record: 41.7 C (107.1 F) in 2004
The hottest day of the year at Copala, 1961 to 2012. The record is 41.7 C (107.1 F) in 2004, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Copala by year
YearHottest day (TXx)
196134.4 C (93.9 F)
196238.9 C (102.0 F)
196338.9 C (102.0 F)
196437.8 C (100.0 F)
196535.0 C (95.0 F)
196635.0 C (95.0 F)
196737.2 C (99.0 F)
196835.0 C (95.0 F)
196940.0 C (104.0 F)
197039.4 C (102.9 F)
197136.7 C (98.1 F)
197237.2 C (99.0 F)
197333.9 C (93.0 F)
197434.4 C (93.9 F)
197536.7 C (98.1 F)
197634.4 C (93.9 F)
197736.1 C (97.0 F)
197833.9 C (93.0 F)
197935.0 C (95.0 F)
198035.0 C (95.0 F)
198135.0 C (95.0 F)
198239.4 C (102.9 F)
198335.6 C (96.1 F)
198433.9 C (93.0 F)
198535.0 C (95.0 F)
198634.4 C (93.9 F)
198735.6 C (96.1 F)
198835.6 C (96.1 F)
198937.2 C (99.0 F)
199038.9 C (102.0 F)
199139.4 C (102.9 F)
199236.1 C (97.0 F)
199336.7 C (98.1 F)
199435.6 C (96.1 F)
199535.6 C (96.1 F)
199635.0 C (95.0 F)
199735.6 C (96.1 F)
199835.6 C (96.1 F)
199933.9 C (93.0 F)
200035.6 C (96.1 F)
200135.0 C (95.0 F)
200235.6 C (96.1 F)
200336.7 C (98.1 F)
200441.7 C (107.1 F)
200541.7 C (107.1 F)
200632.8 C (91.0 F)
200733.9 C (93.0 F)
200828.9 C (84.0 F)
200931.7 C (89.1 F)
201032.8 C (91.0 F)
201135.0 C (95.0 F)
201232.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Copala by year The coldest night of the year at Copala, 1961 to 2012. The record is 7.8 C (46.0 F) in 1965, marked on the chart; the median year is 14.5 C (58.0 F). 7.51012.51517.52019701980199020002010Record: 7.8 C (46.0 F) in 1965
The coldest night of the year at Copala, 1961 to 2012. The record is 7.8 C (46.0 F) in 1965, marked on the chart; the median year is 14.5 C (58.0 F).
Coldest night (TNn) at Copala by year
YearColdest night (TNn)
196115.6 C (60.1 F)
196215.6 C (60.1 F)
196315.6 C (60.1 F)
196410.0 C (50.0 F)
19657.8 C (46.0 F)
196610.6 C (51.1 F)
196711.7 C (53.1 F)
196815.0 C (59.0 F)
196916.7 C (62.1 F)
197015.6 C (60.1 F)
197112.8 C (55.0 F)
197210.6 C (51.1 F)
197313.9 C (57.0 F)
197412.8 C (55.0 F)
197512.2 C (54.0 F)
197612.2 C (54.0 F)
197712.8 C (55.0 F)
197812.8 C (55.0 F)
197912.8 C (55.0 F)
198012.8 C (55.0 F)
198110.6 C (51.1 F)
198212.8 C (55.0 F)
198311.7 C (53.1 F)
198412.8 C (55.0 F)
198512.8 C (55.0 F)
198615.0 C (59.0 F)
198712.8 C (55.0 F)
198815.6 C (60.1 F)
198915.0 C (59.0 F)
199015.0 C (59.0 F)
199111.7 C (53.1 F)
199217.2 C (63.0 F)
199316.7 C (62.1 F)
199416.7 C (62.1 F)
199517.8 C (64.0 F)
199617.8 C (64.0 F)
199717.8 C (64.0 F)
199817.8 C (64.0 F)
199916.7 C (62.1 F)
200017.2 C (63.0 F)
200117.8 C (64.0 F)
200213.9 C (57.0 F)
200316.1 C (61.0 F)
200415.0 C (59.0 F)
200516.7 C (62.1 F)
200615.0 C (59.0 F)
200713.9 C (57.0 F)
200812.8 C (55.0 F)
200912.8 C (55.0 F)
201015.0 C (59.0 F)
201113.9 C (57.0 F)
201215.6 C (60.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Copala by year The wettest day of the year at Copala, 1961 to 2012. The record is 319.8 mm (12.6 in) in 1974, marked on the chart; the median year is 131.3 mm (5.2 in). 010020030040019701980199020002010Record: 319.8 mm (12.6 in) in 1974
The wettest day of the year at Copala, 1961 to 2012. The record is 319.8 mm (12.6 in) in 1974, marked on the chart; the median year is 131.3 mm (5.2 in).
Wettest day (Rx1day) at Copala by year
YearWettest day (Rx1day)
196180.8 mm (3.2 in)
196286.9 mm (3.4 in)
196349.8 mm (2.0 in)
196491.9 mm (3.6 in)
196574.4 mm (2.9 in)
196663.5 mm (2.5 in)
196795.0 mm (3.7 in)
196889.9 mm (3.5 in)
1969113.8 mm (4.5 in)
197038.4 mm (1.5 in)
197194.0 mm (3.7 in)
1972111.3 mm (4.4 in)
1973259.8 mm (10.2 in)
1974319.8 mm (12.6 in)
1975102.9 mm (4.1 in)
1976207.8 mm (8.2 in)
197753.8 mm (2.1 in)
1978194.8 mm (7.7 in)
1979130.8 mm (5.1 in)
1980142.7 mm (5.6 in)
1981150.9 mm (5.9 in)
1982171.5 mm (6.8 in)
1983100.8 mm (4.0 in)
1984122.9 mm (4.8 in)
1985101.9 mm (4.0 in)
198682.3 mm (3.2 in)
1987104.9 mm (4.1 in)
1988140.0 mm (5.5 in)
1989276.9 mm (10.9 in)
1990183.9 mm (7.2 in)
199161.0 mm (2.4 in)
1992131.8 mm (5.2 in)
1993144.8 mm (5.7 in)
199499.8 mm (3.9 in)
1995192.8 mm (7.6 in)
1996188.0 mm (7.4 in)
1997225.8 mm (8.9 in)
1998170.9 mm (6.7 in)
1999101.9 mm (4.0 in)
2000129.3 mm (5.1 in)
2001181.4 mm (7.1 in)
2002146.3 mm (5.8 in)
2003186.4 mm (7.3 in)
2004111.3 mm (4.4 in)
2005167.9 mm (6.6 in)
2006186.4 mm (7.3 in)
2007135.9 mm (5.4 in)
2008173.5 mm (6.8 in)
2009128.3 mm (5.1 in)
2010217.9 mm (8.6 in)
2011146.3 mm (5.8 in)
2012142.7 mm (5.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Copala by year The wettest five days of the year at Copala, 1961 to 2012. The record is 804.3 mm (31.7 in) in 1974, marked on the chart; the median year is 261.5 mm (10.3 in). 02004006008001,00019701980199020002010Record: 804.3 mm (31.7 in) in 1974
The wettest five days of the year at Copala, 1961 to 2012. The record is 804.3 mm (31.7 in) in 1974, marked on the chart; the median year is 261.5 mm (10.3 in).
Wettest five days (Rx5day) at Copala by year
YearWettest five days (Rx5day)
1961200.9 mm (7.9 in)
1962149.7 mm (5.9 in)
196349.8 mm (2.0 in)
1964207.8 mm (8.2 in)
1965181.1 mm (7.1 in)
1966104.2 mm (4.1 in)
1967159.5 mm (6.3 in)
1968151.9 mm (6.0 in)
1969268.3 mm (10.6 in)
197074.2 mm (2.9 in)
1971206.0 mm (8.1 in)
1972295.2 mm (11.6 in)
1973425.4 mm (16.7 in)
1974804.3 mm (31.7 in)
1975286.8 mm (11.3 in)
1976352.9 mm (13.9 in)
197791.4 mm (3.6 in)
1978304.7 mm (12.0 in)
1979261.9 mm (10.3 in)
1980218.7 mm (8.6 in)
1981295.0 mm (11.6 in)
1982375.3 mm (14.8 in)
1983131.3 mm (5.2 in)
1984314.9 mm (12.4 in)
1985218.2 mm (8.6 in)
1986173.8 mm (6.8 in)
1987112.3 mm (4.4 in)
1988404.3 mm (15.9 in)
1989380.0 mm (15.0 in)
1990328.2 mm (12.9 in)
199196.6 mm (3.8 in)
1992153.9 mm (6.1 in)
1993278.9 mm (11.0 in)
1994125.7 mm (4.9 in)
1995260.4 mm (10.3 in)
1996227.2 mm (8.9 in)
1997413.3 mm (16.3 in)
1998397.5 mm (15.6 in)
1999266.2 mm (10.5 in)
2000326.2 mm (12.8 in)
2001261.2 mm (10.3 in)
2002270.0 mm (10.6 in)
2003307.6 mm (12.1 in)
2004189.1 mm (7.4 in)
2005466.4 mm (18.4 in)
2006221.2 mm (8.7 in)
2007180.9 mm (7.1 in)
2008348.6 mm (13.7 in)
2009277.0 mm (10.9 in)
2010380.2 mm (15.0 in)
2011432.1 mm (17.0 in)
2012260.8 mm (10.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Copala by year The longest dry spell of the year at Copala, 1961 to 2012. The record is 168 days in 1991, marked on the chart; the median year is 133 days. 05010015020019701980199020002010Record: 168 days in 1991
The longest dry spell of the year at Copala, 1961 to 2012. The record is 168 days in 1991, marked on the chart; the median year is 133 days.
Longest dry spell (CDD) at Copala by year
YearLongest dry spell (CDD)
196141 days
1962154 days
1963151 days
196474 days
1965130 days
196691 days
1967125 days
196863 days
196983 days
1970158 days
1971141 days
1972152 days
197379 days
1974100 days
1975108 days
1976154 days
1977122 days
197891 days
1979136 days
1980114 days
1981134 days
198276 days
198371 days
1984101 days
198585 days
1986141 days
198780 days
1988159 days
1989158 days
1990123 days
1991168 days
1992124 days
1993165 days
1994152 days
199569 days
1996148 days
1997151 days
1998152 days
1999156 days
2000137 days
200171 days
2002132 days
2003134 days
2004121 days
2005134 days
2006143 days
2007149 days
2008139 days
200983 days
2010111 days
2011136 days
2012136 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

44 years, 1962 to 2011

A day with at least 138.7 mm (5.5 in) of rain is expected about once in 2 years. A day with at least 317.0 mm (12.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Copala: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years138.7 mm (5.5 in)
5 years193.2 mm (7.6 in)
10 years226.4 mm (8.9 in)
25 years265.3 mm (10.4 in)
50 years292.0 mm (11.5 in)Longer than the 44 years of record
100 years317.0 mm (12.5 in)Longer than the 44 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, 44 years of values from 1962 to 2011.

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: 319.8 mm (12.6 in) in 1974; 276.9 mm (10.9 in) in 1989; 259.8 mm (10.2 in) in 1973.

Download the Data

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