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Santa Ana Tlapacoyan Weather Records (MXN00020202)

Record envelope, standing records and threshold days for Santa Ana Tlapacoyan (MXN00020202), Mexico, with 39 years of record.

Key Facts for Santa Ana Tlapacoyan

  • Santa Ana Tlapacoyan (MXN00020202) is a weather station in Mexico at 16.73 latitude and -96.82 longitude, 1,525 m (5,003 ft) above sea level.
  • The station reports from 1972 to 2010, 39 years of record.
  • 1,464 records set at Santa Ana Tlapacoyan still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Santa Ana Tlapacoyan set a daily record high maximum temperature of 35.0 C (95.0 F) on 31 October 2010.

About the Station

  • Location: Mexico, 16.73 latitude, -96.82 longitude.
  • Elevation: 1,525 m (5,003 ft).
  • Period of record: 1972 to 2010, 39 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 Santa Ana Tlapacoyan, with 2026 drawn through them The band shows the record high and record low for each calendar day at Santa Ana Tlapacoyan. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Santa Ana Tlapacoyan. 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 Santa Ana Tlapacoyan, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan38.9 C (102.0 F)-4.4 C (24.1 F)n/an/a
Feb40.6 C (105.1 F)-4.4 C (24.1 F)n/an/a
Mar42.8 C (109.0 F)-2.2 C (28.0 F)n/an/a
Apr42.8 C (109.0 F)0.6 C (33.1 F)n/an/a
May42.8 C (109.0 F)7.8 C (46.0 F)n/an/a
Jun41.7 C (107.1 F)8.9 C (48.0 F)n/an/a
Jul38.9 C (102.0 F)8.9 C (48.0 F)n/an/a
Aug38.9 C (102.0 F)6.7 C (44.1 F)n/an/a
Sep38.9 C (102.0 F)7.8 C (46.0 F)n/an/a
Oct38.9 C (102.0 F)0.6 C (33.1 F)n/an/a
Nov36.7 C (98.1 F)-2.2 C (28.0 F)n/an/a
Dec31.7 C (89.1 F)-4.4 C (24.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Santa Ana Tlapacoyan by the year they were set 1,464 records at Santa Ana Tlapacoyan still stand. 2010 holds the most, with 221. 01002003001972: 321973: 211974: 121975: 161976: 451977: 341978: 351979: 321980: 161981: 131982: 331983: 271984: 321985: 421986: 771987: 1171988: 241989: 191990: 171991: 91992: 71993: 71994: 71995: 91996: 101997: 231998: 261999: 112000: 492001: 72002: 222003: 92004: 242005: 1182006: 432007: 12008: 442009: 1732010: 2211972197619801984198819921996200020042008
1,464 records at Santa Ana Tlapacoyan still stand. 2010 holds the most, with 221.
Standing records at Santa Ana Tlapacoyan by the year they were set
Year setStanding records
197232
197321
197412
197516
197645
197734
197835
197932
198016
198113
198233
198327
198432
198542
198677
1987117
198824
198919
199017
19919
19927
19937
19947
19959
199610
199723
199826
199911
200049
20017
200222
20039
200424
2005118
200643
20071
200844
2009173
2010221

All-Time Record Progression

5 new records
When Santa Ana Tlapacoyan set new all-time records 5 all-time records were set at Santa Ana Tlapacoyan between 1 April 2009 and 22 May 2010. Each dot is a new record. Record high maximum temperatureRecord high minimum temperature1 April 2009: Record high maximum temperature 40.0 C (104.0 F)21 April 2009: Record high maximum temperature 40.6 C (105.1 F)28 April 2009: Record high maximum temperature 41.7 C (107.1 F)27 March 2010: Record high maximum temperature 42.8 C (109.0 F)22 May 2010: Record high minimum temperature 27.8 C (82.0 F)2010
5 all-time records were set at Santa Ana Tlapacoyan between 1 April 2009 and 22 May 2010. Each dot is a new record.
When Santa Ana Tlapacoyan set new all-time records
DateKindDetail
2009-04-01Record high maximum temperatureRecord high maximum temperature 40.0 C (104.0 F)
2009-04-21Record high maximum temperatureRecord high maximum temperature 40.6 C (105.1 F)
2009-04-28Record high maximum temperatureRecord high maximum temperature 41.7 C (107.1 F)
2010-03-27Record high maximum temperatureRecord high maximum temperature 42.8 C (109.0 F)
2010-05-22Record high minimum temperatureRecord high minimum temperature 27.8 C (82.0 F)

Wettest Day of Each Month

Jun: 97.5 mm (3.8 in)
Record daily precipitation for each month at Santa Ana Tlapacoyan The wettest day on record for each calendar month at Santa Ana Tlapacoyan. The most was 97.5 mm (3.8 in) on 21 June 1989. 0255075100 Jan: 10.4 mm (0.4 in), 29 January 2010 Jan Feb: 51.1 mm (2.0 in), 25 February 1983 Feb Mar: 29.2 mm (1.1 in), 26 March 1992 Mar Apr: 92.7 mm (3.6 in), 16 April 1999 Apr May: 67.8 mm (2.7 in), 8 May 1996 May Jun: 97.5 mm (3.8 in), 21 June 1989 Jun Jul: 72.4 mm (2.9 in), 9 July 1998 Jul Aug: 75.7 mm (3.0 in), 14 August 2003 Aug Sep: 70.4 mm (2.8 in), 4 September 2002 Sep Oct: 56.4 mm (2.2 in), 2 October 1991 Oct Nov: 34.8 mm (1.4 in), 9 November 1997 Nov Dec: 23.6 mm (0.9 in), 30 December 1995 Dec
The wettest day on record for each calendar month at Santa Ana Tlapacoyan. The most was 97.5 mm (3.8 in) on 21 June 1989.
Record daily precipitation for each month at Santa Ana Tlapacoyan
MonthRecord daily precipitation (mm)Date
Jan10.4 mm (0.4 in)29 January 2010
Feb51.1 mm (2.0 in)25 February 1983
Mar29.2 mm (1.1 in)26 March 1992
Apr92.7 mm (3.6 in)16 April 1999
May67.8 mm (2.7 in)8 May 1996
Jun97.5 mm (3.8 in)21 June 1989
Jul72.4 mm (2.9 in)9 July 1998
Aug75.7 mm (3.0 in)14 August 2003
Sep70.4 mm (2.8 in)4 September 2002
Oct56.4 mm (2.2 in)2 October 1991
Nov34.8 mm (1.4 in)9 November 1997
Dec23.6 mm (0.9 in)30 December 1995

Period of Record Coverage

1972 to 2010
Days with data per year at Santa Ana Tlapacoyan 39 years of record at Santa Ana Tlapacoyan, 1972 to 2010. 8 years have data for under 90 percent of days and are left out of rankings: 1972, 1981, 1988, 1993, 1999, 2008, 2009, 2010. 1972: 206 of 366 days1973: 365 of 365 days1974: 353 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 361 of 365 days1980: 366 of 366 days1981: 202 of 365 days1982: 364 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 334 of 365 days1986: 363 of 365 days1987: 365 of 365 days1988: 254 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 304 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 336 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 272 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 364 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 214 of 366 days2009: 275 of 365 days2010: 300 of 365 days19751980198519901995200020052010
39 years of record at Santa Ana Tlapacoyan, 1972 to 2010. 8 years have data for under 90 percent of days and are left out of rankings: 1972, 1981, 1988, 1993, 1999, 2008, 2009, 2010.
Days with data per year at Santa Ana Tlapacoyan
YearDays with dataShare of yearComplete
197220656%No
1973365100%Yes
197435397%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978364100%Yes
197936199%Yes
1980366100%Yes
198120255%No
1982364100%Yes
1983365100%Yes
1984365100%Yes
198533492%Yes
198636399%Yes
1987365100%Yes
198825469%No
1989365100%Yes
1990364100%Yes
1991365100%Yes
1992366100%Yes
199330483%No
1994365100%Yes
1995365100%Yes
199633692%Yes
1997365100%Yes
1998365100%Yes
199927275%No
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003364100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
200821458%No
200927575%No
201030082%No

Latest Records

20
Latest records at Santa Ana Tlapacoyan
DateStationRecordValueBeat old record byOld record stoodSignificance
31 October 2010Santa Ana Tlapacoyan, MXdaily high max35.0 C (95.0 F)1.1 C (2.0 F)1 year6 of 100 (Routine)
30 October 2010Santa Ana Tlapacoyan, MXdaily high max35.6 C (96.1 F)1.7 C (3.1 F)1 year8 of 100 (Routine)
29 October 2010Santa Ana Tlapacoyan, MXdaily high max35.6 C (96.1 F)3.9 C (7.0 F)8 years18 of 100 (Routine)
28 October 2010Santa Ana Tlapacoyan, MXdaily high max36.7 C (98.1 F)2.8 C (5.0 F)1 year12 of 100 (Routine)
27 October 2010Santa Ana Tlapacoyan, MXdaily high max (Tie)35.0 C (95.0 F)tie1 year0 of 100 (Routine)
26 October 2010Santa Ana Tlapacoyan, MXdaily high max37.8 C (100.0 F)1.1 C (2.0 F)1 year6 of 100 (Routine)
25 October 2010Santa Ana Tlapacoyan, MXdaily high max (Tie)33.9 C (93.0 F)tie1 year0 of 100 (Routine)
23 October 2010Santa Ana Tlapacoyan, MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)8 years8 of 100 (Routine)
23 October 2010Santa Ana Tlapacoyan, MXdaily high max36.7 C (98.1 F)1.1 C (2.0 F)1 year6 of 100 (Routine)
22 October 2010Santa Ana Tlapacoyan, MXdaily high max36.7 C (98.1 F)1.7 C (3.1 F)1 year8 of 100 (Routine)
21 October 2010Santa Ana Tlapacoyan, MXdaily high max37.8 C (100.0 F)2.8 C (5.0 F)1 year12 of 100 (Routine)
21 October 2010Santa Ana Tlapacoyan, MXdaily high min (Tie)17.8 C (64.0 F)tie32 years3 of 100 (Routine)
20 October 2010Santa Ana Tlapacoyan, MXdaily high max36.7 C (98.1 F)3.9 C (7.0 F)1 year16 of 100 (Routine)
16 October 2010Santa Ana Tlapacoyan, MXdaily high max37.8 C (100.0 F)5.0 C (9.0 F)1 year20 of 100 (Routine)
16 October 2010Santa Ana Tlapacoyan, MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)4 years7 of 100 (Routine)
15 October 2010Santa Ana Tlapacoyan, MXdaily high max36.7 C (98.1 F)1.1 C (2.0 F)1 year6 of 100 (Routine)
14 October 2010Santa Ana Tlapacoyan, MXmonthly high max38.9 C (102.0 F)1.1 C (2.0 F)0 years16 of 100 (Routine)
13 October 2010Santa Ana Tlapacoyan, MXdaily high max (Tie)33.9 C (93.0 F)tie8 years1 of 100 (Routine)
12 October 2010Santa Ana Tlapacoyan, MXdaily high max35.6 C (96.1 F)3.9 C (7.0 F)7 years18 of 100 (Routine)
11 October 2010Santa Ana Tlapacoyan, MXmonthly high max37.8 C (100.0 F)1.1 C (2.0 F)1 year16 of 100 (Routine)

Climate Trend

29 complete years, 1973 to 2007
Annual mean temperature at Santa Ana Tlapacoyan as warming stripes, 1973 to 2007 One stripe for each of 29 complete years at Santa Ana Tlapacoyan, 1973 to 2007. Blue stripes are years cooler than the station's own mean of 19.6 C (67.2 F); red stripes are warmer. The coolest year was 2005, at 17.5 C (63.6 F), and the warmest was 2002, at 21.1 C (70.0 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1973: 20.5 C, +0.9 C from the station mean1974: 19.4 C, -0.1 C from the station mean1975: 19.3 C, -0.3 C from the station mean1976: 19.2 C, -0.4 C from the station mean1977: 19.9 C, +0.3 C from the station mean1978: 19.7 C, +0.1 C from the station mean1979: 19.6 C, +0.1 C from the station mean1980: 20.1 C, +0.5 C from the station mean1982: 20.0 C, +0.4 C from the station mean1983: 19.1 C, -0.4 C from the station mean1984: 18.8 C, -0.7 C from the station mean1986: 17.6 C, -2.0 C from the station mean1987: 18.0 C, -1.6 C from the station mean1989: 19.0 C, -0.6 C from the station mean1990: 19.2 C, -0.4 C from the station mean1991: 19.7 C, +0.1 C from the station mean1992: 19.5 C, -0.1 C from the station mean1994: 19.7 C, +0.1 C from the station mean1995: 20.1 C, +0.5 C from the station mean1997: 20.0 C, +0.4 C from the station mean1998: 19.7 C, +0.1 C from the station mean2000: 20.0 C, +0.4 C from the station mean2001: 20.1 C, +0.5 C from the station mean2002: 21.1 C, +1.5 C from the station mean2003: 20.5 C, +0.9 C from the station mean2004: 19.8 C, +0.2 C from the station mean2005: 17.5 C, -2.0 C from the station mean2006: 20.3 C, +0.7 C from the station mean2007: 20.4 C, +0.8 C from the station mean1973198019851990199520002005
One stripe for each of 29 complete years at Santa Ana Tlapacoyan, 1973 to 2007. Blue stripes are years cooler than the station's own mean of 19.6 C (67.2 F); red stripes are warmer. The coolest year was 2005, at 17.5 C (63.6 F), and the warmest was 2002, at 21.1 C (70.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Santa Ana Tlapacoyan as warming stripes, 1973 to 2007
YearAnnual mean temperatureDifference from the station mean
197320.5 C+0.92 C
197419.4 C-0.14 C
197519.3 C-0.30 C
197619.2 C-0.39 C
197719.9 C+0.32 C
197819.7 C+0.10 C
197919.6 C+0.07 C
198020.1 C+0.53 C
198220.0 C+0.42 C
198319.1 C-0.43 C
198418.8 C-0.74 C
198617.6 C-2.00 C
198718.0 C-1.61 C
198919.0 C-0.59 C
199019.2 C-0.39 C
199119.7 C+0.09 C
199219.5 C-0.06 C
199419.7 C+0.11 C
199520.1 C+0.48 C
199720.0 C+0.38 C
199819.7 C+0.14 C
200020.0 C+0.40 C
200120.1 C+0.55 C
200221.1 C+1.53 C
200320.5 C+0.94 C
200419.8 C+0.18 C
200517.5 C-2.04 C
200620.3 C+0.73 C
200720.4 C+0.83 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1972 to 2010
Yearly extremes at Santa Ana Tlapacoyan: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)201035.6 C (96.1 F)39
Coldest night (TNn)-4.4 C (24.1 F)19760.0 C (32.0 F)39
Wettest day (Rx1day)97.5 mm (3.8 in)198950.8 mm (2.0 in)39
Wettest five days (Rx5day)145.5 mm (5.7 in)197485.5 mm (3.4 in)39
Longest dry spell (CDD)125 days199171 days39

Hottest day (TXx)

Hottest day (TXx) at Santa Ana Tlapacoyan by year The hottest day of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 42.8 C (109.0 F) in 2010, marked on the chart; the median year is 35.6 C (96.1 F). 303540451980199020002010Record: 42.8 C (109.0 F) in 2010
The hottest day of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 42.8 C (109.0 F) in 2010, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Santa Ana Tlapacoyan by year
YearHottest day (TXx)
197231.7 C (89.1 F)
197337.2 C (99.0 F)
197436.7 C (98.1 F)
197536.7 C (98.1 F)
197633.9 C (93.0 F)
197735.6 C (96.1 F)
197835.6 C (96.1 F)
197935.0 C (95.0 F)
198035.6 C (96.1 F)
198130.0 C (86.0 F)
198235.6 C (96.1 F)
198335.6 C (96.1 F)
198433.9 C (93.0 F)
198530.6 C (87.1 F)
198635.0 C (95.0 F)
198733.9 C (93.0 F)
198839.4 C (102.9 F)
198933.9 C (93.0 F)
199032.8 C (91.0 F)
199137.8 C (100.0 F)
199233.9 C (93.0 F)
199333.9 C (93.0 F)
199435.6 C (96.1 F)
199535.6 C (96.1 F)
199633.9 C (93.0 F)
199733.9 C (93.0 F)
199838.9 C (102.0 F)
199935.6 C (96.1 F)
200035.6 C (96.1 F)
200135.6 C (96.1 F)
200236.7 C (98.1 F)
200336.7 C (98.1 F)
200436.7 C (98.1 F)
200536.7 C (98.1 F)
200635.6 C (96.1 F)
200735.0 C (95.0 F)
200838.9 C (102.0 F)
200941.7 C (107.1 F)
201042.8 C (109.0 F)

Coldest night (TNn)

Coldest night (TNn) at Santa Ana Tlapacoyan by year The coldest night of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is -4.4 C (24.1 F) in 1976, marked on the chart; the median year is 0.0 C (32.0 F). -505101980199020002010Record: -4.4 C (24.1 F) in 1976
The coldest night of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is -4.4 C (24.1 F) in 1976, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at Santa Ana Tlapacoyan by year
YearColdest night (TNn)
19725.6 C (42.1 F)
1973-0.6 C (30.9 F)
19740.0 C (32.0 F)
19750.6 C (33.1 F)
1976-4.4 C (24.1 F)
19770.6 C (33.1 F)
19780.6 C (33.1 F)
19790.6 C (33.1 F)
19800.6 C (33.1 F)
19811.7 C (35.1 F)
1982-3.3 C (26.1 F)
1983-2.2 C (28.0 F)
19840.6 C (33.1 F)
19850.6 C (33.1 F)
1986-0.6 C (30.9 F)
1987-1.1 C (30.0 F)
1988-1.1 C (30.0 F)
1989-4.4 C (24.1 F)
1990-3.3 C (26.1 F)
1991-1.1 C (30.0 F)
1992-1.1 C (30.0 F)
1993-1.1 C (30.0 F)
19940.6 C (33.1 F)
19950.6 C (33.1 F)
1996-4.4 C (24.1 F)
1997-2.2 C (28.0 F)
1998-2.2 C (28.0 F)
19990.0 C (32.0 F)
2000-2.2 C (28.0 F)
20011.7 C (35.1 F)
2002-3.3 C (26.1 F)
20030.0 C (32.0 F)
20040.6 C (33.1 F)
20050.0 C (32.0 F)
2006-2.2 C (28.0 F)
20070.6 C (33.1 F)
2008-1.1 C (30.0 F)
20098.9 C (48.0 F)
201010.0 C (50.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Santa Ana Tlapacoyan by year The wettest day of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 97.5 mm (3.8 in) in 1989, marked on the chart; the median year is 50.8 mm (2.0 in). 02550751001980199020002010Record: 97.5 mm (3.8 in) in 1989
The wettest day of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 97.5 mm (3.8 in) in 1989, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Santa Ana Tlapacoyan by year
YearWettest day (Rx1day)
197233.8 mm (1.3 in)
197338.4 mm (1.5 in)
197458.7 mm (2.3 in)
197531.2 mm (1.2 in)
197650.3 mm (2.0 in)
197746.0 mm (1.8 in)
197845.0 mm (1.8 in)
197964.5 mm (2.5 in)
198045.5 mm (1.8 in)
198153.6 mm (2.1 in)
198251.8 mm (2.0 in)
198351.1 mm (2.0 in)
198446.5 mm (1.8 in)
198545.7 mm (1.8 in)
198650.8 mm (2.0 in)
198733.5 mm (1.3 in)
19885.1 mm (0.20 in)
198997.5 mm (3.8 in)
199036.3 mm (1.4 in)
199156.4 mm (2.2 in)
199242.2 mm (1.7 in)
199345.2 mm (1.8 in)
199437.6 mm (1.5 in)
199564.5 mm (2.5 in)
199667.8 mm (2.7 in)
199745.2 mm (1.8 in)
199883.3 mm (3.3 in)
199992.7 mm (3.6 in)
200059.7 mm (2.4 in)
200155.1 mm (2.2 in)
200270.4 mm (2.8 in)
200375.7 mm (3.0 in)
200450.8 mm (2.0 in)
200543.7 mm (1.7 in)
200649.8 mm (2.0 in)
200768.1 mm (2.7 in)
200854.1 mm (2.1 in)
200947.5 mm (1.9 in)
201063.8 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Santa Ana Tlapacoyan by year The wettest five days of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 145.5 mm (5.7 in) in 1974, marked on the chart; the median year is 85.5 mm (3.4 in). 0501001501980199020002010Record: 145.5 mm (5.7 in) in 1974
The wettest five days of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 145.5 mm (5.7 in) in 1974, marked on the chart; the median year is 85.5 mm (3.4 in).
Wettest five days (Rx5day) at Santa Ana Tlapacoyan by year
YearWettest five days (Rx5day)
197276.8 mm (3.0 in)
197386.4 mm (3.4 in)
1974145.5 mm (5.7 in)
197575.1 mm (3.0 in)
1976115.4 mm (4.5 in)
197770.9 mm (2.8 in)
197875.3 mm (3.0 in)
197989.4 mm (3.5 in)
198065.1 mm (2.6 in)
1981137.2 mm (5.4 in)
1982111.1 mm (4.4 in)
198366.1 mm (2.6 in)
198477.0 mm (3.0 in)
198596.0 mm (3.8 in)
198684.4 mm (3.3 in)
198769.8 mm (2.7 in)
19889.5 mm (0.37 in)
1989117.1 mm (4.6 in)
199068.1 mm (2.7 in)
1991113.6 mm (4.5 in)
199264.6 mm (2.5 in)
199375.7 mm (3.0 in)
199463.3 mm (2.5 in)
199595.0 mm (3.7 in)
1996111.0 mm (4.4 in)
199779.0 mm (3.1 in)
1998126.5 mm (5.0 in)
199992.7 mm (3.6 in)
2000102.8 mm (4.0 in)
2001131.9 mm (5.2 in)
200281.3 mm (3.2 in)
200393.5 mm (3.7 in)
200481.3 mm (3.2 in)
200583.3 mm (3.3 in)
200685.5 mm (3.4 in)
2007104.2 mm (4.1 in)
200893.8 mm (3.7 in)
200981.1 mm (3.2 in)
2010137.3 mm (5.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Santa Ana Tlapacoyan by year The longest dry spell of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 125 days in 1991, marked on the chart; the median year is 71 days. 0501001501980199020002010Record: 125 days in 1991
The longest dry spell of the year at Santa Ana Tlapacoyan, 1972 to 2010. The record is 125 days in 1991, marked on the chart; the median year is 71 days.
Longest dry spell (CDD) at Santa Ana Tlapacoyan by year
YearLongest dry spell (CDD)
197219 days
197367 days
197447 days
197574 days
197693 days
197763 days
197853 days
197958 days
198098 days
198170 days
198259 days
198354 days
1984100 days
198565 days
198686 days
198792 days
1988122 days
1989101 days
199067 days
1991125 days
199255 days
199374 days
199495 days
199553 days
199685 days
199789 days
1998124 days
199983 days
200086 days
200168 days
200259 days
200371 days
200459 days
200590 days
200667 days
200735 days
200891 days
200958 days
201073 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

32 years, 1973 to 2007

A day with at least 50.8 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 103.3 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Santa Ana Tlapacoyan: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years50.8 mm (2.0 in)
5 years64.0 mm (2.5 in)
10 years73.0 mm (2.9 in)
25 years84.9 mm (3.3 in)
50 years94.0 mm (3.7 in)Longer than the 32 years of record
100 years103.3 mm (4.1 in)Longer than the 32 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, 32 years of values from 1973 to 2007.

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: 97.5 mm (3.8 in) in 1989; 83.3 mm (3.3 in) in 1998; 75.7 mm (3.0 in) in 2003.

Download the Data

  • Data for Santa Ana Tlapacoyan standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Santa Ana Tlapacoyan 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

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