Built 2026-10-19 (19 October 2026)

Calixtlahuaca Weather Records (MXN00015203)

Record envelope, standing records and threshold days for Calixtlahuaca (MXN00015203), Mexico, with 38 years of record.

Key Facts for Calixtlahuaca

  • Calixtlahuaca (MXN00015203) is a weather station in Mexico at 19.33 latitude and -99.68 longitude, 2,630 m (8,628 ft) above sea level.
  • The station reports from 1975 to 2012, 38 years of record.
  • 1,464 records set at Calixtlahuaca still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Calixtlahuaca set a daily record precipitation of 29.0 mm (1.1 in) on 23 June 2012.

About the Station

  • Location: Mexico, 19.33 latitude, -99.68 longitude.
  • Elevation: 2,630 m (8,628 ft).
  • Period of record: 1975 to 2012, 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 Calixtlahuaca, with 2026 drawn through them The band shows the record high and record low for each calendar day at Calixtlahuaca. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Calixtlahuaca. 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 Calixtlahuaca, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.6 C (78.1 F)-10.0 C (14.0 F)n/an/a
Feb27.2 C (81.0 F)-7.2 C (19.0 F)n/an/a
Mar30.6 C (87.1 F)-7.2 C (19.0 F)n/an/a
Apr31.1 C (88.0 F)-2.8 C (27.0 F)n/an/a
May33.9 C (93.0 F)-2.8 C (27.0 F)n/an/a
Jun31.7 C (89.1 F)0.0 C (32.0 F)n/an/a
Jul25.0 C (77.0 F)0.6 C (33.1 F)n/an/a
Aug25.6 C (78.1 F)0.0 C (32.0 F)n/an/a
Sep25.0 C (77.0 F)-1.1 C (30.0 F)n/an/a
Oct26.1 C (79.0 F)-3.3 C (26.1 F)n/an/a
Nov30.0 C (86.0 F)-6.7 C (19.9 F)n/an/a
Dec26.1 C (79.0 F)-10.0 C (14.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Calixtlahuaca by the year they were set 1,464 records at Calixtlahuaca still stand. 1983 holds the most, with 99. 02550751001978: 91979: 631980: 541981: 561982: 661983: 991984: 481985: 381986: 591987: 611988: 521989: 431990: 401991: 431992: 601993: 581994: 501995: 591996: 201997: 601998: 801999: 302000: 242001: 322002: 402003: 172004: 402005: 222006: 282007: 372008: 192009: 272011: 112012: 19197819821986199019941998200220062011
1,464 records at Calixtlahuaca still stand. 1983 holds the most, with 99.
Standing records at Calixtlahuaca by the year they were set
Year setStanding records
19789
197963
198054
198156
198266
198399
198448
198538
198659
198761
198852
198943
199040
199143
199260
199358
199450
199559
199620
199760
199880
199930
200024
200132
200240
200317
200440
200522
200628
200737
200819
200927
201111
201219

Wettest Day of Each Month

Oct: 62.5 mm (2.5 in)
Record daily precipitation for each month at Calixtlahuaca The wettest day on record for each calendar month at Calixtlahuaca. The most was 62.5 mm (2.5 in) on 21 October 1980. 020406080 Jan: 35.8 mm (1.4 in), 28 January 1992 Jan Feb: 15.7 mm (0.6 in), 2 February 1992 Feb Mar: 35.6 mm (1.4 in), 4 March 1988 Mar Apr: 26.4 mm (1.0 in), 14 April 1981 Apr May: 34.3 mm (1.4 in), 15 May 1979 May Jun: 47.0 mm (1.9 in), 11 June 1994 Jun Jul: 47.0 mm (1.9 in), 17 July 1997 Jul Aug: 42.2 mm (1.7 in), 25 August 1975 Aug Sep: 60.5 mm (2.4 in), 26 September 1981 Sep Oct: 62.5 mm (2.5 in), 21 October 1980 Oct Nov: 30.0 mm (1.2 in), 1 November 1980 Nov Dec: 56.1 mm (2.2 in), 14 December 2003 Dec
The wettest day on record for each calendar month at Calixtlahuaca. The most was 62.5 mm (2.5 in) on 21 October 1980.
Record daily precipitation for each month at Calixtlahuaca
MonthRecord daily precipitation (mm)Date
Jan35.8 mm (1.4 in)28 January 1992
Feb15.7 mm (0.6 in)2 February 1992
Mar35.6 mm (1.4 in)4 March 1988
Apr26.4 mm (1.0 in)14 April 1981
May34.3 mm (1.4 in)15 May 1979
Jun47.0 mm (1.9 in)11 June 1994
Jul47.0 mm (1.9 in)17 July 1997
Aug42.2 mm (1.7 in)25 August 1975
Sep60.5 mm (2.4 in)26 September 1981
Oct62.5 mm (2.5 in)21 October 1980
Nov30.0 mm (1.2 in)1 November 1980
Dec56.1 mm (2.2 in)14 December 2003

Period of Record Coverage

1978 to 2012
Days with data per year at Calixtlahuaca 34 years of record at Calixtlahuaca, 1978 to 2012. 4 years have data for under 90 percent of days and are left out of rankings: 1978, 2009, 2011, 2012. 1978: 66 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 358 of 365 days1984: 332 of 366 days1985: 330 of 365 days1986: 365 of 365 days1987: 359 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 362 of 365 days1994: 362 of 365 days1995: 363 of 365 days1996: 362 of 366 days1997: 356 of 365 days1998: 361 of 365 days1999: 352 of 365 days2000: 366 of 366 days2001: 354 of 365 days2002: 353 of 365 days2003: 357 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 366 of 366 days2009: 273 of 365 days2011: 119 of 365 days2012: 176 of 366 days198019851990199520002005
34 years of record at Calixtlahuaca, 1978 to 2012. 4 years have data for under 90 percent of days and are left out of rankings: 1978, 2009, 2011, 2012.
Days with data per year at Calixtlahuaca
YearDays with dataShare of yearComplete
19786618%No
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
198335898%Yes
198433291%Yes
198533090%Yes
1986365100%Yes
198735998%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
199336299%Yes
199436299%Yes
199536399%Yes
199636299%Yes
199735698%Yes
199836199%Yes
199935296%Yes
2000366100%Yes
200135497%Yes
200235397%Yes
200335798%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007364100%Yes
2008366100%Yes
200927375%No
201111933%No
201217648%No

Latest Records

20
Latest records at Calixtlahuaca
DateStationRecordValueBeat old record byOld record stoodSignificance
23 June 2012Calixtlahuaca, MXdaily rain29.0 mm (1.1 in)5.6 mm (0.22 in)13 years13 of 100 (Routine)
20 June 2012Calixtlahuaca, MXdaily low max (Tie)16.1 C (61.0 F)tie27 years2 of 100 (Routine)
19 June 2012Calixtlahuaca, MXdaily low max15.0 C (59.0 F)2.8 C (5.0 F)27 years21 of 100 (Routine)
16 June 2012Calixtlahuaca, MXdaily low max16.1 C (61.0 F)0.6 C (1.1 F)31 years14 of 100 (Routine)
30 May 2012Calixtlahuaca, MXdaily low min (Tie)2.8 C (37.0 F)tie29 years2 of 100 (Routine)
29 May 2012Calixtlahuaca, MXdaily high max (Tie)27.8 C (82.0 F)tie22 years2 of 100 (Routine)
22 May 2012Calixtlahuaca, MXdaily low min2.8 C (37.0 F)1.1 C (2.0 F)6 years9 of 100 (Routine)
21 May 2012Calixtlahuaca, MXdaily low min (Tie)2.8 C (37.0 F)tie3 years0 of 100 (Routine)
27 April 2012Calixtlahuaca, MXdaily low min (Tie)-0.6 C (30.9 F)tie15 years1 of 100 (Routine)
24 April 2012Calixtlahuaca, MXdaily low min1.1 C (34.0 F)0.6 C (1.1 F)28 years13 of 100 (Routine)
29 March 2012Calixtlahuaca, MXdaily low max (Tie)20.0 C (68.0 F)tie8 years1 of 100 (Routine)
28 March 2012Calixtlahuaca, MXdaily rain19.3 mm (0.8 in)5.3 mm (0.21 in)30 years20 of 100 (Routine)
18 March 2012Calixtlahuaca, MXdaily low max20.0 C (68.0 F)0.6 C (1.1 F)32 years14 of 100 (Routine)
9 March 2012Calixtlahuaca, MXdaily rain9.7 mm (0.38 in)9.2 mm (0.36 in)16 years20 of 100 (Routine)
20 February 2012Calixtlahuaca, MXdaily rain3.6 mm (0.14 in)0.6 mm (0.02 in)21 years10 of 100 (Routine)
18 February 2012Calixtlahuaca, MXdaily high min5.0 C (41.0 F)0.6 C (1.1 F)26 years13 of 100 (Routine)
17 February 2012Calixtlahuaca, MXdaily high min (Tie)3.9 C (39.0 F)tie2 years0 of 100 (Routine)
16 February 2012Calixtlahuaca, MXdaily low max18.9 C (66.0 F)1.1 C (2.0 F)28 years15 of 100 (Routine)
16 February 2012Calixtlahuaca, MXdaily high min3.9 C (39.0 F)0.6 C (1.1 F)2 years5 of 100 (Routine)
15 February 2012Calixtlahuaca, MXdaily high min7.2 C (45.0 F)3.9 C (7.0 F)5 years20 of 100 (Routine)

Climate Trend

30 complete years, 1979 to 2008
Annual mean temperature at Calixtlahuaca as warming stripes, 1979 to 2008 One stripe for each of 30 complete years at Calixtlahuaca, 1979 to 2008. Blue stripes are years cooler than the station's own mean of 13.2 C (55.7 F); red stripes are warmer. The coolest year was 1985, at 12.5 C (54.5 F), and the warmest was 1995, at 13.9 C (57.1 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1979: 12.6 C, -0.5 C from the station mean1980: 12.9 C, -0.2 C from the station mean1981: 13.2 C, 0.0 C from the station mean1982: 13.1 C, -0.1 C from the station mean1983: 13.0 C, -0.1 C from the station mean1984: 12.6 C, -0.6 C from the station mean1985: 12.5 C, -0.6 C from the station mean1986: 12.7 C, -0.4 C from the station mean1987: 12.9 C, -0.3 C from the station mean1988: 13.3 C, +0.1 C from the station mean1989: 12.9 C, -0.2 C from the station mean1990: 13.6 C, +0.4 C from the station mean1991: 13.6 C, +0.5 C from the station mean1992: 13.0 C, -0.2 C from the station mean1993: 13.6 C, +0.4 C from the station mean1994: 13.9 C, +0.8 C from the station mean1995: 13.9 C, +0.8 C from the station mean1996: 13.1 C, -0.1 C from the station mean1997: 12.8 C, -0.4 C from the station mean1998: 13.8 C, +0.6 C from the station mean1999: 12.8 C, -0.4 C from the station mean2000: 12.9 C, -0.2 C from the station mean2001: 13.1 C, -0.1 C from the station mean2002: 13.7 C, +0.5 C from the station mean2003: 13.5 C, +0.4 C from the station mean2004: 13.1 C, -0.1 C from the station mean2005: 13.4 C, +0.2 C from the station mean2006: 13.2 C, 0.0 C from the station mean2007: 13.1 C, -0.1 C from the station mean2008: 13.0 C, -0.2 C from the station mean197919851990199520002005
One stripe for each of 30 complete years at Calixtlahuaca, 1979 to 2008. Blue stripes are years cooler than the station's own mean of 13.2 C (55.7 F); red stripes are warmer. The coolest year was 1985, at 12.5 C (54.5 F), and the warmest was 1995, at 13.9 C (57.1 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Calixtlahuaca as warming stripes, 1979 to 2008
YearAnnual mean temperatureDifference from the station mean
197912.6 C-0.53 C
198012.9 C-0.25 C
198113.2 C+0.00 C
198213.1 C-0.07 C
198313.0 C-0.14 C
198412.6 C-0.60 C
198512.5 C-0.65 C
198612.7 C-0.44 C
198712.9 C-0.26 C
198813.3 C+0.10 C
198912.9 C-0.23 C
199013.6 C+0.41 C
199113.6 C+0.48 C
199213.0 C-0.17 C
199313.6 C+0.43 C
199413.9 C+0.77 C
199513.9 C+0.78 C
199613.1 C-0.11 C
199712.8 C-0.36 C
199813.8 C+0.61 C
199912.8 C-0.39 C
200012.9 C-0.22 C
200113.1 C-0.07 C
200213.7 C+0.53 C
200313.5 C+0.37 C
200413.1 C-0.11 C
200513.4 C+0.21 C
200613.2 C+0.02 C
200713.1 C-0.06 C
200813.0 C-0.20 C

The fitted trend in annual mean temperature here over 1979 to 2008 is 0.14 C (-0.02 to 0.31) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.26 F (-0.04 to 0.55) 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 Calixtlahuaca
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.14 C (-0.02 to 0.31) per decade0.26 F (-0.04 to 0.55) per decade1979 to 200830Not clearly different from zero
Mean daily maximum0.1 C (-0.2 to 0.3) per decade0.1 F (-0.4 to 0.6) per decade1979 to 200830Not clearly different from zero
Mean daily minimum0.23 C (0.01 to 0.44) per decade0.41 F (0.02 to 0.79) per decade1979 to 200830Rise

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

1975 to 2012
Yearly extremes at Calixtlahuaca: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)33.9 C (93.0 F)198328.9 C (84.0 F)34
Coldest night (TNn)-10.0 C (14.0 F)1997-5.0 C (23.0 F)34
Wettest day (Rx1day)62.5 mm (2.5 in)198034.8 mm (1.4 in)37
Wettest five days (Rx5day)119.9 mm (4.7 in)200974.9 mm (2.9 in)37
Longest dry spell (CDD)112 days199842 days37

Hottest day (TXx)

Hottest day (TXx) at Calixtlahuaca by year The hottest day of the year at Calixtlahuaca, 1975 to 2012. The record is 33.9 C (93.0 F) in 1983, marked on the chart; the median year is 28.9 C (84.0 F). 202530351980199020002010Record: 33.9 C (93.0 F) in 1983
The hottest day of the year at Calixtlahuaca, 1975 to 2012. The record is 33.9 C (93.0 F) in 1983, marked on the chart; the median year is 28.9 C (84.0 F).
Hottest day (TXx) at Calixtlahuaca by year
YearHottest day (TXx)
1975n/a
1976n/a
1977n/a
197822.8 C (73.0 F)
197926.1 C (79.0 F)
198026.1 C (79.0 F)
198128.9 C (84.0 F)
198228.9 C (84.0 F)
198333.9 C (93.0 F)
198431.1 C (88.0 F)
198530.0 C (86.0 F)
198628.9 C (84.0 F)
198727.8 C (82.0 F)
198830.0 C (86.0 F)
198930.0 C (86.0 F)
199028.3 C (82.9 F)
199130.6 C (87.1 F)
199228.3 C (82.9 F)
199331.7 C (89.1 F)
199429.4 C (84.9 F)
199530.0 C (86.0 F)
199627.8 C (82.0 F)
199727.2 C (81.0 F)
199832.2 C (90.0 F)
199928.9 C (84.0 F)
200028.9 C (84.0 F)
200128.9 C (84.0 F)
200230.0 C (86.0 F)
200330.0 C (86.0 F)
200425.6 C (78.1 F)
200528.9 C (84.0 F)
200628.9 C (84.0 F)
200730.0 C (86.0 F)
200827.8 C (82.0 F)
200928.3 C (82.9 F)
201125.0 C (77.0 F)
201228.9 C (84.0 F)

Coldest night (TNn)

Coldest night (TNn) at Calixtlahuaca by year The coldest night of the year at Calixtlahuaca, 1975 to 2012. The record is -10.0 C (14.0 F) in 1997, marked on the chart; the median year is -5.0 C (23.0 F). -10-7.5-5-2.501980199020002010Record: -10.0 C (14.0 F) in 1997
The coldest night of the year at Calixtlahuaca, 1975 to 2012. The record is -10.0 C (14.0 F) in 1997, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Calixtlahuaca by year
YearColdest night (TNn)
1975n/a
1976n/a
1977n/a
1978-1.7 C (28.9 F)
1979-4.4 C (24.1 F)
1980-5.6 C (21.9 F)
1981-5.0 C (23.0 F)
1982-6.7 C (19.9 F)
1983-7.2 C (19.0 F)
1984-5.0 C (23.0 F)
1985-5.0 C (23.0 F)
1986-8.9 C (16.0 F)
1987-6.1 C (21.0 F)
1988-8.3 C (17.1 F)
1989-7.2 C (19.0 F)
1990-4.4 C (24.1 F)
1991-5.0 C (23.0 F)
1992-5.0 C (23.0 F)
1993-3.9 C (25.0 F)
1994-5.0 C (23.0 F)
1995-4.4 C (24.1 F)
1996-5.6 C (21.9 F)
1997-10.0 C (14.0 F)
1998-7.2 C (19.0 F)
1999-7.2 C (19.0 F)
2000-5.0 C (23.0 F)
2001-4.4 C (24.1 F)
2002-6.1 C (21.0 F)
2003-5.0 C (23.0 F)
2004-6.7 C (19.9 F)
2005-5.0 C (23.0 F)
2006-6.7 C (19.9 F)
2007-2.8 C (27.0 F)
2008-6.7 C (19.9 F)
2009-3.3 C (26.1 F)
2011-2.2 C (28.0 F)
2012-3.3 C (26.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Calixtlahuaca by year The wettest day of the year at Calixtlahuaca, 1975 to 2012. The record is 62.5 mm (2.5 in) in 1980, marked on the chart; the median year is 34.8 mm (1.4 in). 2030405060701980199020002010Record: 62.5 mm (2.5 in) in 1980
The wettest day of the year at Calixtlahuaca, 1975 to 2012. The record is 62.5 mm (2.5 in) in 1980, marked on the chart; the median year is 34.8 mm (1.4 in).
Wettest day (Rx1day) at Calixtlahuaca by year
YearWettest day (Rx1day)
197542.2 mm (1.7 in)
197633.3 mm (1.3 in)
197733.3 mm (1.3 in)
197849.8 mm (2.0 in)
197941.4 mm (1.6 in)
198062.5 mm (2.5 in)
198160.5 mm (2.4 in)
198232.0 mm (1.3 in)
198328.7 mm (1.1 in)
198432.0 mm (1.3 in)
198530.0 mm (1.2 in)
198629.5 mm (1.2 in)
198742.7 mm (1.7 in)
198835.6 mm (1.4 in)
198933.3 mm (1.3 in)
199030.7 mm (1.2 in)
199128.7 mm (1.1 in)
199235.8 mm (1.4 in)
199332.3 mm (1.3 in)
199447.0 mm (1.9 in)
199530.5 mm (1.2 in)
199636.3 mm (1.4 in)
199747.0 mm (1.9 in)
199846.0 mm (1.8 in)
199935.3 mm (1.4 in)
200033.8 mm (1.3 in)
200133.3 mm (1.3 in)
200234.8 mm (1.4 in)
200356.1 mm (2.2 in)
200443.4 mm (1.7 in)
200538.4 mm (1.5 in)
200645.5 mm (1.8 in)
200727.4 mm (1.1 in)
200833.8 mm (1.3 in)
200949.8 mm (2.0 in)
201124.6 mm (1.0 in)
201229.0 mm (1.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Calixtlahuaca by year The wettest five days of the year at Calixtlahuaca, 1975 to 2012. The record is 119.9 mm (4.7 in) in 2009, marked on the chart; the median year is 74.9 mm (2.9 in). 4060801001201980199020002010Record: 119.9 mm (4.7 in) in 2009
The wettest five days of the year at Calixtlahuaca, 1975 to 2012. The record is 119.9 mm (4.7 in) in 2009, marked on the chart; the median year is 74.9 mm (2.9 in).
Wettest five days (Rx5day) at Calixtlahuaca by year
YearWettest five days (Rx5day)
197564.1 mm (2.5 in)
197680.6 mm (3.2 in)
197761.6 mm (2.4 in)
197870.9 mm (2.8 in)
197977.2 mm (3.0 in)
198081.8 mm (3.2 in)
198177.3 mm (3.0 in)
198259.2 mm (2.3 in)
198361.5 mm (2.4 in)
198477.3 mm (3.0 in)
198572.1 mm (2.8 in)
198654.6 mm (2.1 in)
198760.5 mm (2.4 in)
198878.8 mm (3.1 in)
198953.4 mm (2.1 in)
199053.0 mm (2.1 in)
199155.9 mm (2.2 in)
199257.7 mm (2.3 in)
199397.6 mm (3.8 in)
199498.3 mm (3.9 in)
199574.9 mm (2.9 in)
199677.2 mm (3.0 in)
199784.1 mm (3.3 in)
1998113.5 mm (4.5 in)
199997.8 mm (3.9 in)
200091.0 mm (3.6 in)
200184.5 mm (3.3 in)
200278.0 mm (3.1 in)
200367.4 mm (2.7 in)
200461.2 mm (2.4 in)
200569.6 mm (2.7 in)
2006102.3 mm (4.0 in)
200750.8 mm (2.0 in)
200876.0 mm (3.0 in)
2009119.9 mm (4.7 in)
201153.1 mm (2.1 in)
201260.2 mm (2.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Calixtlahuaca by year The longest dry spell of the year at Calixtlahuaca, 1975 to 2012. The record is 112 days in 1998, marked on the chart; the median year is 42 days. 02550751001251980199020002010Record: 112 days in 1998
The longest dry spell of the year at Calixtlahuaca, 1975 to 2012. The record is 112 days in 1998, marked on the chart; the median year is 42 days.
Longest dry spell (CDD) at Calixtlahuaca by year
YearLongest dry spell (CDD)
197530 days
197637 days
197732 days
197844 days
197941 days
198047 days
198142 days
198243 days
198356 days
198437 days
198517 days
198695 days
198742 days
198853 days
198946 days
199027 days
199137 days
199230 days
199347 days
199447 days
199538 days
199663 days
199726 days
1998112 days
199935 days
200048 days
200148 days
200252 days
200339 days
200443 days
200550 days
200655 days
200734 days
200879 days
200934 days
201123 days
201222 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.

Frost Dates and Growing Season

30 years with a frost

Across 30 years with a frost, the median last spring frost at Calixtlahuaca falls on 26 March and the median first autumn frost on 30 October, which leaves a median of 212 days between them.

Fitted over all years, the growing season changes by -1.4 days per decade at this station.

Frost dates and growing season at Calixtlahuaca
MeasureMedian, all yearsEarliest periodRecent period (1979 to 2008)Recent against earliestFitted trend
Last spring frost26 Marchn/a26 Marchn/a+1.9 days per decade
First autumn frost30 Octobern/a30 Octobern/a+0.5 days per decade
Growing days212 daysn/a212 daysn/a-1.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

33 years, 1976 to 2008

A day with at least 35.7 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 76.8 mm (3.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Calixtlahuaca: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years35.7 mm (1.4 in)
5 years43.5 mm (1.7 in)
10 years49.7 mm (2.0 in)
25 years59.1 mm (2.3 in)
50 years67.4 mm (2.7 in)Longer than the 33 years of record
100 years76.8 mm (3.0 in)Longer than the 33 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, 33 years of values from 1976 to 2008.

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: 62.5 mm (2.5 in) in 1980; 60.5 mm (2.4 in) in 1981; 56.1 mm (2.2 in) in 2003.

Download the Data

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