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

Ciudad Altamirano Weather Records (MXN00012019)

Record envelope, standing records and threshold days for Ciudad Altamirano (MXN00012019), Mexico, with 60 years of record.

Key Facts for Ciudad Altamirano

  • Ciudad Altamirano (MXN00012019) is a weather station in Mexico at 18.35 latitude and -100.65 longitude, 250 m (820 ft) above sea level.
  • The station reports from 1954 to 2013, 60 years of record.
  • 1,464 records set at Ciudad Altamirano still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Ciudad Altamirano tied a daily record high minimum temperature of 28.9 C (84.0 F) on 7 June 2013.

About the Station

  • Location: Mexico, 18.35 latitude, -100.65 longitude.
  • Elevation: 250 m (820 ft).
  • Period of record: 1954 to 2013, 60 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 Ciudad Altamirano, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ciudad Altamirano. 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 Ciudad Altamirano. 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 Ciudad Altamirano, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan42.8 C (109.0 F)8.9 C (48.0 F)n/an/a
Feb40.6 C (105.1 F)7.8 C (46.0 F)n/an/a
Mar42.8 C (109.0 F)10.6 C (51.1 F)n/an/a
Apr43.9 C (111.0 F)11.1 C (52.0 F)n/an/a
May45.6 C (114.1 F)13.3 C (55.9 F)n/an/a
Jun46.7 C (116.1 F)13.3 C (55.9 F)n/an/a
Jul40.6 C (105.1 F)14.4 C (57.9 F)n/an/a
Aug41.1 C (106.0 F)15.0 C (59.0 F)n/an/a
Sep38.9 C (102.0 F)13.9 C (57.0 F)n/an/a
Oct40.6 C (105.1 F)12.2 C (54.0 F)n/an/a
Nov40.0 C (104.0 F)10.0 C (50.0 F)n/an/a
Dec39.4 C (102.9 F)4.4 C (39.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ciudad Altamirano by the year they were set 1,464 records at Ciudad Altamirano still stand. 1970 holds the most, with 210. 01002003001954: 411955: 261956: 751957: 251958: 341959: 301960: 671961: 261962: 151963: 221964: 201965: 261966: 181967: 91968: 131969: 171970: 2101971: 111972: 81973: 71974: 141975: 111976: 101977: 151978: 91979: 131980: 101981: 81982: 151983: 371984: 161985: 81986: 211987: 261988: 151989: 221990: 121991: 171992: 281993: 151994: 131995: 151996: 101997: 251998: 761999: 162000: 472001: 82002: 132003: 132004: 132005: 202006: 132007: 172008: 102009: 162010: 232011: 462012: 252013: 231954196019661972197819841990199620022008
1,464 records at Ciudad Altamirano still stand. 1970 holds the most, with 210.
Standing records at Ciudad Altamirano by the year they were set
Year setStanding records
195441
195526
195675
195725
195834
195930
196067
196126
196215
196322
196420
196526
196618
19679
196813
196917
1970210
197111
19728
19737
197414
197511
197610
197715
19789
197913
198010
19818
198215
198337
198416
19858
198621
198726
198815
198922
199012
199117
199228
199315
199413
199515
199610
199725
199876
199916
200047
20018
200213
200313
200413
200520
200613
200717
200810
200916
201023
201146
201225
201323

Wettest Day of Each Month

Jun: 122.9 mm (4.8 in)
Record daily precipitation for each month at Ciudad Altamirano The wettest day on record for each calendar month at Ciudad Altamirano. The most was 122.9 mm (4.8 in) on 30 June 1961. 050100150 Jan: 71.9 mm (2.8 in), 25 January 1980 Jan Feb: 121.2 mm (4.8 in), 3 February 2010 Feb Mar: 25.9 mm (1.0 in), 2 March 2001 Mar Apr: 15.7 mm (0.6 in), 12 April 1954 Apr May: 114.8 mm (4.5 in), 29 May 1966 May Jun: 122.9 mm (4.8 in), 30 June 1961 Jun Jul: 122.4 mm (4.8 in), 17 July 2007 Jul Aug: 96.8 mm (3.8 in), 25 August 1967 Aug Sep: 119.9 mm (4.7 in), 25 September 1956 Sep Oct: 78.0 mm (3.1 in), 5 October 1976 Oct Nov: 52.8 mm (2.1 in), 9 November 1990 Nov Dec: 29.5 mm (1.2 in), 1 December 1983 Dec
The wettest day on record for each calendar month at Ciudad Altamirano. The most was 122.9 mm (4.8 in) on 30 June 1961.
Record daily precipitation for each month at Ciudad Altamirano
MonthRecord daily precipitation (mm)Date
Jan71.9 mm (2.8 in)25 January 1980
Feb121.2 mm (4.8 in)3 February 2010
Mar25.9 mm (1.0 in)2 March 2001
Apr15.7 mm (0.6 in)12 April 1954
May114.8 mm (4.5 in)29 May 1966
Jun122.9 mm (4.8 in)30 June 1961
Jul122.4 mm (4.8 in)17 July 2007
Aug96.8 mm (3.8 in)25 August 1967
Sep119.9 mm (4.7 in)25 September 1956
Oct78.0 mm (3.1 in)5 October 1976
Nov52.8 mm (2.1 in)9 November 1990
Dec29.5 mm (1.2 in)1 December 1983

Period of Record Coverage

1954 to 2013
Days with data per year at Ciudad Altamirano 60 years of record at Ciudad Altamirano, 1954 to 2013. 6 years have data for under 90 percent of days and are left out of rankings: 1954, 1960, 1961, 1962, 2001, 2013. 1954: 296 of 365 days1955: 365 of 365 days1956: 363 of 366 days1957: 365 of 365 days1958: 362 of 365 days1959: 334 of 365 days1960: 324 of 366 days1961: 208 of 365 days1962: 213 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 359 of 365 days1967: 361 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 363 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 364 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 362 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 364 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 364 of 365 days1988: 364 of 366 days1989: 363 of 365 days1990: 343 of 365 days1991: 365 of 365 days1992: 363 of 366 days1993: 350 of 365 days1994: 361 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 336 of 365 days1999: 356 of 365 days2000: 366 of 366 days2001: 182 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 364 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 181 of 365 days196019701980199020002010
60 years of record at Ciudad Altamirano, 1954 to 2013. 6 years have data for under 90 percent of days and are left out of rankings: 1954, 1960, 1961, 1962, 2001, 2013.
Days with data per year at Ciudad Altamirano
YearDays with dataShare of yearComplete
195429681%No
1955365100%Yes
195636399%Yes
1957365100%Yes
195836299%Yes
195933492%Yes
196032489%No
196120857%No
196221358%No
1963365100%Yes
1964366100%Yes
1965365100%Yes
196635998%Yes
196736199%Yes
1968366100%Yes
1969365100%Yes
197036399%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974364100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
197836299%Yes
1979365100%Yes
1980366100%Yes
1981364100%Yes
1982365100%Yes
1983364100%Yes
198436499%Yes
1985365100%Yes
1986365100%Yes
1987364100%Yes
198836499%Yes
198936399%Yes
199034394%Yes
1991365100%Yes
199236399%Yes
199335096%Yes
199436199%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
199833692%Yes
199935698%Yes
2000366100%Yes
200118250%No
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010364100%Yes
2011365100%Yes
2012366100%Yes
201318150%No

Latest Records

20
Latest records at Ciudad Altamirano
DateStationRecordValueBeat old record byOld record stoodSignificance
7 June 2013Ciudad Altamirano, MXdaily high min (Tie)28.9 C (84.0 F)tie44 years4 of 100 (Routine)
22 May 2013Ciudad Altamirano, MXdaily high max (Tie)42.8 C (109.0 F)tie58 years5 of 100 (Routine)
21 May 2013Ciudad Altamirano, MXdaily high min28.9 C (84.0 F)0.6 C (1.1 F)48 years22 of 100 (Routine)
20 May 2013Ciudad Altamirano, MXdaily high min (Tie)28.9 C (84.0 F)tie50 years5 of 100 (Routine)
25 April 2013Ciudad Altamirano, MXdaily high max (Tie)42.8 C (109.0 F)tie56 years5 of 100 (Routine)
22 April 2013Ciudad Altamirano, MXdaily high max (Tie)42.8 C (109.0 F)tie4 years1 of 100 (Routine)
7 April 2013Ciudad Altamirano, MXdaily high min (Tie)25.6 C (78.1 F)tie27 years3 of 100 (Routine)
2 April 2013Ciudad Altamirano, MXdaily high min (Tie)25.0 C (77.0 F)tie12 years2 of 100 (Routine)
31 March 2013Ciudad Altamirano, MXdaily high max (Tie)42.2 C (108.0 F)tie4 years1 of 100 (Routine)
30 March 2013Ciudad Altamirano, MXmonthly high max (Tie)42.8 C (109.0 F)tie29 years6 of 100 (Routine)
29 March 2013Ciudad Altamirano, MXdaily high max42.2 C (108.0 F)0.5 C (0.9 F)48 years22 of 100 (Routine)
25 March 2013Ciudad Altamirano, MXdaily high max (Tie)41.7 C (107.1 F)tie28 years3 of 100 (Routine)
24 March 2013Ciudad Altamirano, MXdaily high max (Tie)41.7 C (107.1 F)tie54 years5 of 100 (Routine)
23 March 2013Ciudad Altamirano, MXdaily high max (Tie)41.7 C (107.1 F)tie4 years1 of 100 (Routine)
14 March 2013Ciudad Altamirano, MXdaily rain2.5 mm (0.10 in)2.5 mm (0.10 in)59 years20 of 100 (Routine)
9 March 2013Ciudad Altamirano, MXdaily high max (Tie)41.7 C (107.1 F)tie0 years1 of 100 (Routine)
27 February 2013Ciudad Altamirano, MXdaily high max (Tie)40.0 C (104.0 F)tie49 years5 of 100 (Routine)
26 February 2013Ciudad Altamirano, MXdaily high max (Tie)40.0 C (104.0 F)tie50 years5 of 100 (Routine)
21 February 2013Ciudad Altamirano, MXdaily high max (Tie)40.0 C (104.0 F)tie6 years1 of 100 (Routine)
20 February 2013Ciudad Altamirano, MXmonthly high max (Tie)40.6 C (105.1 F)tie46 years7 of 100 (Routine)

Climate Trend

50 complete years, 1955 to 2012
Annual mean temperature at Ciudad Altamirano as warming stripes, 1955 to 2012 One stripe for each of 50 complete years at Ciudad Altamirano, 1955 to 2012. Blue stripes are years cooler than the station's own mean of 28.1 C (82.5 F); red stripes are warmer. The coolest year was 1970, at 25.5 C (77.9 F), and the warmest was 2011, at 29.6 C (85.2 F). The strongest colour marks a difference of 2.6 C (4.7 F). 1955: 27.7 C, -0.4 C from the station mean1956: 26.8 C, -1.3 C from the station mean1957: 28.4 C, +0.3 C from the station mean1958: 28.1 C, 0.0 C from the station mean1963: 28.7 C, +0.6 C from the station mean1964: 28.5 C, +0.5 C from the station mean1965: 28.6 C, +0.5 C from the station mean1966: 28.4 C, +0.3 C from the station mean1967: 27.8 C, -0.2 C from the station mean1968: 27.6 C, -0.5 C from the station mean1969: 28.5 C, +0.4 C from the station mean1970: 25.5 C, -2.6 C from the station mean1971: 27.1 C, -1.0 C from the station mean1972: 27.5 C, -0.6 C from the station mean1973: 27.3 C, -0.8 C from the station mean1974: 27.4 C, -0.7 C from the station mean1975: 26.9 C, -1.2 C from the station mean1976: 27.1 C, -1.0 C from the station mean1977: 27.1 C, -1.0 C from the station mean1978: 27.2 C, -0.9 C from the station mean1979: 27.5 C, -0.6 C from the station mean1980: 27.2 C, -0.9 C from the station mean1981: 27.2 C, -0.9 C from the station mean1982: 28.6 C, +0.5 C from the station mean1983: 28.4 C, +0.3 C from the station mean1984: 28.5 C, +0.4 C from the station mean1985: 28.7 C, +0.6 C from the station mean1986: 27.9 C, -0.2 C from the station mean1987: 28.3 C, +0.2 C from the station mean1988: 28.1 C, 0.0 C from the station mean1989: 27.7 C, -0.4 C from the station mean1991: 28.3 C, +0.3 C from the station mean1992: 27.7 C, -0.4 C from the station mean1994: 28.9 C, +0.8 C from the station mean1995: 28.8 C, +0.7 C from the station mean1996: 28.0 C, -0.1 C from the station mean1997: 27.6 C, -0.4 C from the station mean1999: 27.8 C, -0.3 C from the station mean2000: 28.1 C, 0.0 C from the station mean2002: 28.5 C, +0.4 C from the station mean2003: 28.5 C, +0.4 C from the station mean2004: 28.3 C, +0.2 C from the station mean2005: 28.9 C, +0.8 C from the station mean2006: 28.9 C, +0.8 C from the station mean2007: 29.3 C, +1.2 C from the station mean2008: 29.1 C, +1.0 C from the station mean2009: 29.5 C, +1.4 C from the station mean2010: 28.6 C, +0.5 C from the station mean2011: 29.6 C, +1.5 C from the station mean2012: 29.4 C, +1.3 C from the station mean195519601965197019751980198519901995200020052010
One stripe for each of 50 complete years at Ciudad Altamirano, 1955 to 2012. Blue stripes are years cooler than the station's own mean of 28.1 C (82.5 F); red stripes are warmer. The coolest year was 1970, at 25.5 C (77.9 F), and the warmest was 2011, at 29.6 C (85.2 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Ciudad Altamirano as warming stripes, 1955 to 2012
YearAnnual mean temperatureDifference from the station mean
195527.7 C-0.36 C
195626.8 C-1.25 C
195728.4 C+0.34 C
195828.1 C+0.04 C
196328.7 C+0.63 C
196428.5 C+0.46 C
196528.6 C+0.49 C
196628.4 C+0.33 C
196727.8 C-0.24 C
196827.6 C-0.48 C
196928.5 C+0.41 C
197025.5 C-2.56 C
197127.1 C-0.95 C
197227.5 C-0.62 C
197327.3 C-0.78 C
197427.4 C-0.66 C
197526.9 C-1.23 C
197627.1 C-0.98 C
197727.1 C-1.02 C
197827.2 C-0.93 C
197927.5 C-0.58 C
198027.2 C-0.88 C
198127.2 C-0.92 C
198228.6 C+0.48 C
198328.4 C+0.35 C
198428.5 C+0.43 C
198528.7 C+0.60 C
198627.9 C-0.19 C
198728.3 C+0.20 C
198828.1 C+0.05 C
198927.7 C-0.42 C
199128.3 C+0.26 C
199227.7 C-0.41 C
199428.9 C+0.83 C
199528.8 C+0.75 C
199628.0 C-0.07 C
199727.6 C-0.44 C
199927.8 C-0.26 C
200028.1 C-0.02 C
200228.5 C+0.41 C
200328.5 C+0.38 C
200428.3 C+0.21 C
200528.9 C+0.80 C
200628.9 C+0.78 C
200729.3 C+1.25 C
200829.1 C+1.03 C
200929.5 C+1.41 C
201028.6 C+0.52 C
201129.6 C+1.50 C
201229.4 C+1.33 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1955 to 2012. In Fahrenheit: 0.5 F (0.3 to 0.7) per decade. The slope is a straight line fitted to 50 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ciudad Altamirano
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.1 to 0.4) per decade0.5 F (0.3 to 0.7) per decade1955 to 201250Rise
Mean daily maximum0.2 C (0.1 to 0.3) per decade0.3 F (0.1 to 0.6) per decade1955 to 201250Rise
Mean daily minimum0.3 C (0.2 to 0.5) per decade0.6 F (0.3 to 0.9) per decade1955 to 201250Rise

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

1954 to 2013
Yearly extremes at Ciudad Altamirano: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.7 C (116.1 F)196042.8 C (109.0 F)60
Coldest night (TNn)4.4 C (39.9 F)195411.7 C (53.1 F)60
Wettest day (Rx1day)122.9 mm (4.8 in)196170.2 mm (2.8 in)60
Wettest five days (Rx5day)195.4 mm (7.7 in)2011126.8 mm (5.0 in)60
Longest dry spell (CDD)167 days1957104 days60

Hottest day (TXx)

Hottest day (TXx) at Ciudad Altamirano by year The hottest day of the year at Ciudad Altamirano, 1954 to 2013. The record is 46.7 C (116.1 F) in 1960, marked on the chart; the median year is 42.8 C (109.0 F). 384042444648196019701980199020002010Record: 46.7 C (116.1 F) in 1960
The hottest day of the year at Ciudad Altamirano, 1954 to 2013. The record is 46.7 C (116.1 F) in 1960, marked on the chart; the median year is 42.8 C (109.0 F).
Hottest day (TXx) at Ciudad Altamirano by year
YearHottest day (TXx)
195441.7 C (107.1 F)
195542.8 C (109.0 F)
195642.8 C (109.0 F)
195743.9 C (111.0 F)
195845.0 C (113.0 F)
195942.2 C (108.0 F)
196046.7 C (116.1 F)
196141.1 C (106.0 F)
196242.8 C (109.0 F)
196343.3 C (109.9 F)
196444.4 C (111.9 F)
196545.0 C (113.0 F)
196643.3 C (109.9 F)
196742.8 C (109.0 F)
196841.7 C (107.1 F)
196943.3 C (109.9 F)
197042.8 C (109.0 F)
197141.7 C (107.1 F)
197242.2 C (108.0 F)
197342.2 C (108.0 F)
197442.2 C (108.0 F)
197541.7 C (107.1 F)
197643.3 C (109.9 F)
197741.7 C (107.1 F)
197841.7 C (107.1 F)
197941.7 C (107.1 F)
198042.8 C (109.0 F)
198141.7 C (107.1 F)
198243.3 C (109.9 F)
198345.0 C (113.0 F)
198443.3 C (109.9 F)
198542.8 C (109.0 F)
198643.9 C (111.0 F)
198743.9 C (111.0 F)
198842.8 C (109.0 F)
198943.9 C (111.0 F)
199041.7 C (107.1 F)
199143.9 C (111.0 F)
199242.8 C (109.0 F)
199344.4 C (111.9 F)
199443.9 C (111.0 F)
199543.9 C (111.0 F)
199643.3 C (109.9 F)
199742.8 C (109.0 F)
199843.3 C (109.9 F)
199943.9 C (111.0 F)
200038.9 C (102.0 F)
200141.7 C (107.1 F)
200242.8 C (109.0 F)
200343.3 C (109.9 F)
200442.8 C (109.0 F)
200543.9 C (111.0 F)
200643.3 C (109.9 F)
200742.8 C (109.0 F)
200842.8 C (109.0 F)
200942.8 C (109.0 F)
201045.6 C (114.1 F)
201145.0 C (113.0 F)
201242.8 C (109.0 F)
201342.8 C (109.0 F)

Coldest night (TNn)

Coldest night (TNn) at Ciudad Altamirano by year The coldest night of the year at Ciudad Altamirano, 1954 to 2013. The record is 4.4 C (39.9 F) in 1954, marked on the chart; the median year is 11.7 C (53.1 F). 05101520196019701980199020002010Record: 4.4 C (39.9 F) in 1954
The coldest night of the year at Ciudad Altamirano, 1954 to 2013. The record is 4.4 C (39.9 F) in 1954, marked on the chart; the median year is 11.7 C (53.1 F).
Coldest night (TNn) at Ciudad Altamirano by year
YearColdest night (TNn)
19544.4 C (39.9 F)
19558.9 C (48.0 F)
195610.0 C (50.0 F)
195710.6 C (51.1 F)
195812.8 C (55.0 F)
195912.2 C (54.0 F)
196010.6 C (51.1 F)
196111.7 C (53.1 F)
196213.3 C (55.9 F)
196312.8 C (55.0 F)
196412.2 C (54.0 F)
196511.1 C (52.0 F)
196612.8 C (55.0 F)
196710.6 C (51.1 F)
196811.1 C (52.0 F)
196912.8 C (55.0 F)
19707.8 C (46.0 F)
197110.6 C (51.1 F)
197211.1 C (52.0 F)
197310.6 C (51.1 F)
197411.7 C (53.1 F)
197511.1 C (52.0 F)
197611.7 C (53.1 F)
197711.7 C (53.1 F)
197810.6 C (51.1 F)
197910.0 C (50.0 F)
198011.7 C (53.1 F)
198112.8 C (55.0 F)
198211.1 C (52.0 F)
198311.7 C (53.1 F)
198415.0 C (59.0 F)
198515.6 C (60.1 F)
198610.6 C (51.1 F)
198715.0 C (59.0 F)
198813.9 C (57.0 F)
198914.4 C (57.9 F)
199014.4 C (57.9 F)
199112.8 C (55.0 F)
199212.8 C (55.0 F)
199313.3 C (55.9 F)
199415.0 C (59.0 F)
199512.2 C (54.0 F)
199611.7 C (53.1 F)
19978.9 C (48.0 F)
199810.0 C (50.0 F)
199912.8 C (55.0 F)
200015.6 C (60.1 F)
200113.3 C (55.9 F)
200211.7 C (53.1 F)
20038.3 C (46.9 F)
200410.0 C (50.0 F)
200514.4 C (57.9 F)
200612.8 C (55.0 F)
200713.9 C (57.0 F)
200813.9 C (57.0 F)
200912.8 C (55.0 F)
201011.7 C (53.1 F)
201111.7 C (53.1 F)
201215.0 C (59.0 F)
201315.0 C (59.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ciudad Altamirano by year The wettest day of the year at Ciudad Altamirano, 1954 to 2013. The record is 122.9 mm (4.8 in) in 1961, marked on the chart; the median year is 70.2 mm (2.8 in). 255075100125196019701980199020002010Record: 122.9 mm (4.8 in) in 1961
The wettest day of the year at Ciudad Altamirano, 1954 to 2013. The record is 122.9 mm (4.8 in) in 1961, marked on the chart; the median year is 70.2 mm (2.8 in).
Wettest day (Rx1day) at Ciudad Altamirano by year
YearWettest day (Rx1day)
195454.4 mm (2.1 in)
195555.4 mm (2.2 in)
1956119.9 mm (4.7 in)
195725.9 mm (1.0 in)
195840.4 mm (1.6 in)
195969.9 mm (2.8 in)
196048.3 mm (1.9 in)
1961122.9 mm (4.8 in)
196270.4 mm (2.8 in)
196378.0 mm (3.1 in)
196464.8 mm (2.6 in)
196565.8 mm (2.6 in)
1966114.8 mm (4.5 in)
196796.8 mm (3.8 in)
196861.5 mm (2.4 in)
196986.9 mm (3.4 in)
197066.3 mm (2.6 in)
197139.9 mm (1.6 in)
197271.9 mm (2.8 in)
197349.3 mm (1.9 in)
197472.1 mm (2.8 in)
197577.5 mm (3.1 in)
197678.0 mm (3.1 in)
197773.9 mm (2.9 in)
197865.3 mm (2.6 in)
197986.9 mm (3.4 in)
198087.1 mm (3.4 in)
198164.3 mm (2.5 in)
198269.3 mm (2.7 in)
198343.4 mm (1.7 in)
198458.4 mm (2.3 in)
198574.7 mm (2.9 in)
198670.4 mm (2.8 in)
198743.2 mm (1.7 in)
198855.4 mm (2.2 in)
198949.8 mm (2.0 in)
199078.5 mm (3.1 in)
199172.4 mm (2.9 in)
199294.7 mm (3.7 in)
199372.6 mm (2.9 in)
199463.8 mm (2.5 in)
199552.1 mm (2.1 in)
199672.4 mm (2.9 in)
199751.8 mm (2.0 in)
1998104.9 mm (4.1 in)
199955.9 mm (2.2 in)
200069.9 mm (2.8 in)
200125.9 mm (1.0 in)
200286.9 mm (3.4 in)
200363.8 mm (2.5 in)
200481.8 mm (3.2 in)
200572.6 mm (2.9 in)
200649.3 mm (1.9 in)
2007122.4 mm (4.8 in)
200875.7 mm (3.0 in)
200969.6 mm (2.7 in)
2010121.2 mm (4.8 in)
201189.7 mm (3.5 in)
201278.5 mm (3.1 in)
201343.2 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ciudad Altamirano by year The wettest five days of the year at Ciudad Altamirano, 1954 to 2013. The record is 195.4 mm (7.7 in) in 2011, marked on the chart; the median year is 126.8 mm (5.0 in). 050100150200196019701980199020002010Record: 195.4 mm (7.7 in) in 2011
The wettest five days of the year at Ciudad Altamirano, 1954 to 2013. The record is 195.4 mm (7.7 in) in 2011, marked on the chart; the median year is 126.8 mm (5.0 in).
Wettest five days (Rx5day) at Ciudad Altamirano by year
YearWettest five days (Rx5day)
1954118.4 mm (4.7 in)
1955122.0 mm (4.8 in)
1956194.8 mm (7.7 in)
195778.5 mm (3.1 in)
195886.6 mm (3.4 in)
1959132.9 mm (5.2 in)
1960122.5 mm (4.8 in)
1961122.9 mm (4.8 in)
1962101.4 mm (4.0 in)
1963147.6 mm (5.8 in)
1964127.3 mm (5.0 in)
1965138.2 mm (5.4 in)
1966177.3 mm (7.0 in)
1967173.7 mm (6.8 in)
1968117.5 mm (4.6 in)
1969146.8 mm (5.8 in)
197094.8 mm (3.7 in)
197186.1 mm (3.4 in)
1972170.7 mm (6.7 in)
1973105.5 mm (4.2 in)
1974164.6 mm (6.5 in)
1975134.9 mm (5.3 in)
1976119.9 mm (4.7 in)
1977121.9 mm (4.8 in)
1978109.8 mm (4.3 in)
1979116.1 mm (4.6 in)
1980157.8 mm (6.2 in)
1981137.0 mm (5.4 in)
1982129.1 mm (5.1 in)
1983101.6 mm (4.0 in)
1984128.0 mm (5.0 in)
1985174.8 mm (6.9 in)
1986124.8 mm (4.9 in)
1987104.6 mm (4.1 in)
1988130.3 mm (5.1 in)
1989117.9 mm (4.6 in)
1990173.1 mm (6.8 in)
1991114.9 mm (4.5 in)
1992192.0 mm (7.6 in)
1993170.3 mm (6.7 in)
199496.3 mm (3.8 in)
199599.1 mm (3.9 in)
1996126.3 mm (5.0 in)
1997135.4 mm (5.3 in)
1998192.3 mm (7.6 in)
199999.9 mm (3.9 in)
2000111.8 mm (4.4 in)
200125.9 mm (1.0 in)
2002132.4 mm (5.2 in)
2003136.5 mm (5.4 in)
2004162.8 mm (6.4 in)
200597.7 mm (3.8 in)
200686.6 mm (3.4 in)
2007142.3 mm (5.6 in)
2008161.5 mm (6.4 in)
2009120.2 mm (4.7 in)
2010153.2 mm (6.0 in)
2011195.4 mm (7.7 in)
2012128.1 mm (5.0 in)
201383.8 mm (3.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ciudad Altamirano by year The longest dry spell of the year at Ciudad Altamirano, 1954 to 2013. The record is 167 days in 1957, marked on the chart; the median year is 104 days. 50100150200196019701980199020002010Record: 167 days in 1957
The longest dry spell of the year at Ciudad Altamirano, 1954 to 2013. The record is 167 days in 1957, marked on the chart; the median year is 104 days.
Longest dry spell (CDD) at Ciudad Altamirano by year
YearLongest dry spell (CDD)
195450 days
1955156 days
1956112 days
1957167 days
1958127 days
1959102 days
1960109 days
196175 days
196254 days
1963141 days
1964131 days
196571 days
196691 days
196794 days
196864 days
1969140 days
1970151 days
1971142 days
1972109 days
1973129 days
197469 days
1975108 days
197659 days
197791 days
197873 days
1979143 days
1980105 days
198166 days
198276 days
198372 days
1984143 days
1985123 days
1986139 days
1987109 days
198894 days
198994 days
199096 days
1991130 days
1992100 days
1993163 days
199474 days
199571 days
1996135 days
199779 days
1998155 days
1999136 days
2000141 days
200151 days
200285 days
2003142 days
200484 days
200594 days
2006120 days
200767 days
2008119 days
2009113 days
2010109 days
2011100 days
201291 days
201371 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

55 years, 1955 to 2012

A day with at least 69.3 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 127.3 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Ciudad Altamirano: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years69.3 mm (2.7 in)
5 years87.7 mm (3.5 in)
10 years98.6 mm (3.9 in)
25 years111.1 mm (4.4 in)
50 years119.6 mm (4.7 in)
100 years127.3 mm (5.0 in)Longer than the 55 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, 55 years of values from 1955 to 2012.

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: 122.4 mm (4.8 in) in 2007; 121.2 mm (4.8 in) in 2010; 119.9 mm (4.7 in) in 1956.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Ciudad Altamirano, at 1970. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1970 ran 0.6 C (1.2 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Ciudad Altamirano, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1970-0.6-1.2possible5

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