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San Zacarias Weather Records (MXN00003100)

Record envelope, standing records and threshold days for San Zacarias (MXN00003100), Mexico, with 39 years of record.

Key Facts for San Zacarias

  • San Zacarias (MXN00003100) is a weather station in Mexico at 27.13 latitude and -112.90 longitude, 90 m (295 ft) above sea level.
  • The station reports from 1974 to 2012, 39 years of record.
  • 1,464 records set at San Zacarias still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Zacarias set a daily record low maximum temperature of 18.9 C (66.0 F) on 15 December 2012.

About the Station

  • Location: Mexico, 27.13 latitude, -112.90 longitude.
  • Elevation: 90 m (295 ft).
  • Period of record: 1974 to 2012, 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 San Zacarias, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Zacarias. 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 San Zacarias. 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 San Zacarias, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.8 C (91.0 F)0.0 C (32.0 F)n/an/a
Feb35.6 C (96.1 F)0.6 C (33.1 F)n/an/a
Mar35.6 C (96.1 F)1.1 C (34.0 F)n/an/a
Apr38.9 C (102.0 F)3.9 C (39.0 F)n/an/a
May38.9 C (102.0 F)0.6 C (33.1 F)n/an/a
Jun40.6 C (105.1 F)5.6 C (42.1 F)n/an/a
Jul41.7 C (107.1 F)5.6 C (42.1 F)n/an/a
Aug45.6 C (114.1 F)5.6 C (42.1 F)n/an/a
Sep43.9 C (111.0 F)5.0 C (41.0 F)n/an/a
Oct40.6 C (105.1 F)5.0 C (41.0 F)n/an/a
Nov38.9 C (102.0 F)2.8 C (37.0 F)n/an/a
Dec35.6 C (96.1 F)0.0 C (32.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Zacarias by the year they were set 1,464 records at San Zacarias still stand. 1985 holds the most, with 69. 0204060801974: 191975: 561976: 451977: 571978: 591979: 581980: 491981: 551982: 561983: 481984: 561985: 691986: 531987: 521988: 431989: 241990: 181991: 391992: 351993: 191994: 251995: 141996: 391997: 391998: 311999: 602000: 172001: 162002: 172003: 252004: 232005: 162006: 312007: 602008: 222009: 262010: 342011: 262012: 331974197819821986199019941998200220062010
1,464 records at San Zacarias still stand. 1985 holds the most, with 69.
Standing records at San Zacarias by the year they were set
Year setStanding records
197419
197556
197645
197757
197859
197958
198049
198155
198256
198348
198456
198569
198653
198752
198843
198924
199018
199139
199235
199319
199425
199514
199639
199739
199831
199960
200017
200116
200217
200325
200423
200516
200631
200760
200822
200926
201034
201126
201233

All-Time Record Progression

2 new records
When San Zacarias set new all-time records 2 all-time records were set at San Zacarias between 7 January 2007 and 15 January 2007. Each dot is a new record. Record low maximum temperature7 January 2007: Record low maximum temperature 11.7 C (53.1 F)15 January 2007: Record low maximum temperature 10.6 C (51.1 F)
2 all-time records were set at San Zacarias between 7 January 2007 and 15 January 2007. Each dot is a new record.
When San Zacarias set new all-time records
DateKindDetail
2007-01-07Record low maximum temperatureRecord low maximum temperature 11.7 C (53.1 F)
2007-01-15Record low maximum temperatureRecord low maximum temperature 10.6 C (51.1 F)

Wettest Day of Each Month

Sep: 95.0 mm (3.7 in)
Record daily precipitation for each month at San Zacarias The wettest day on record for each calendar month at San Zacarias. The most was 95.0 mm (3.7 in) on 18 September 2004. 0255075100 Jan: 47.8 mm (1.9 in), 5 January 1993 Jan Feb: 35.8 mm (1.4 in), 27 February 1991 Feb Mar: 20.8 mm (0.8 in), 5 March 2000 Mar Apr: 6.4 mm (0.25 in), 2 April 1997 Apr May: 5.3 mm (0.21 in), 1 May 1981 May Jun: 0.8 mm (0.03 in), 17 June 1984 Jun Jul: 45.0 mm (1.8 in), 13 July 1984 Jul Aug: 91.9 mm (3.6 in), 14 August 1983 Aug Sep: 95.0 mm (3.7 in), 18 September 2004 Sep Oct: 48.3 mm (1.9 in), 20 October 2000 Oct Nov: 41.9 mm (1.6 in), 11 November 1991 Nov Dec: 39.9 mm (1.6 in), 5 December 1994 Dec
The wettest day on record for each calendar month at San Zacarias. The most was 95.0 mm (3.7 in) on 18 September 2004.
Record daily precipitation for each month at San Zacarias
MonthRecord daily precipitation (mm)Date
Jan47.8 mm (1.9 in)5 January 1993
Feb35.8 mm (1.4 in)27 February 1991
Mar20.8 mm (0.8 in)5 March 2000
Apr6.4 mm (0.25 in)2 April 1997
May5.3 mm (0.21 in)1 May 1981
Jun0.8 mm (0.03 in)17 June 1984
Jul45.0 mm (1.8 in)13 July 1984
Aug91.9 mm (3.6 in)14 August 1983
Sep95.0 mm (3.7 in)18 September 2004
Oct48.3 mm (1.9 in)20 October 2000
Nov41.9 mm (1.6 in)11 November 1991
Dec39.9 mm (1.6 in)5 December 1994

Period of Record Coverage

1974 to 2012
Days with data per year at San Zacarias 39 years of record at San Zacarias, 1974 to 2012. 3 years have data for under 90 percent of days and are left out of rankings: 1974, 1990, 2007. 1974: 74 of 365 days1975: 365 of 365 days1976: 335 of 366 days1977: 334 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 335 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 273 of 365 days1991: 335 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: 364 of 365 days2000: 336 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 334 of 365 days2006: 365 of 365 days2007: 303 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 363 of 365 days2012: 364 of 366 days19751980198519901995200020052010
39 years of record at San Zacarias, 1974 to 2012. 3 years have data for under 90 percent of days and are left out of rankings: 1974, 1990, 2007.
Days with data per year at San Zacarias
YearDays with dataShare of yearComplete
19747420%No
1975365100%Yes
197633592%Yes
197733492%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
198433592%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
199027375%No
199133592%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999364100%Yes
200033692%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
200533492%Yes
2006365100%Yes
200730383%No
2008366100%Yes
2009365100%Yes
2010365100%Yes
201136399%Yes
201236499%Yes

Latest Records

20
Latest records at San Zacarias
DateStationRecordValueBeat old record byOld record stoodSignificance
15 December 2012San Zacarias, MXdaily low max18.9 C (66.0 F)1.1 C (2.0 F)28 years14 of 100 (Routine)
12 December 2012San Zacarias, MXdaily low min3.9 C (39.0 F)1.1 C (2.0 F)37 years18 of 100 (Routine)
12 December 2012San Zacarias, MXdaily rain9.9 mm (0.39 in)6.1 mm (0.24 in)28 years18 of 100 (Routine)
27 November 2012San Zacarias, MXdaily high max35.6 C (96.1 F)3.9 C (7.0 F)7 years16 of 100 (Routine)
25 November 2012San Zacarias, MXmonthly high max38.9 C (102.0 F)1.1 C (2.0 F)28 years24 of 100 (Routine)
22 November 2012San Zacarias, MXmonthly high max (Tie)37.8 C (100.0 F)tie28 years5 of 100 (Routine)
12 November 2012San Zacarias, MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)26 years14 of 100 (Routine)
11 November 2012San Zacarias, MXdaily low max (Tie)22.8 C (73.0 F)tie30 years3 of 100 (Routine)
9 November 2012San Zacarias, MXmonthly high max (Tie)37.8 C (100.0 F)tie28 years5 of 100 (Routine)
5 November 2012San Zacarias, MXmonthly high max (Tie)37.8 C (100.0 F)tie27 years5 of 100 (Routine)
27 October 2012San Zacarias, MXdaily high min18.9 C (66.0 F)3.3 C (5.9 F)14 years19 of 100 (Routine)
26 October 2012San Zacarias, MXdaily high min17.8 C (64.0 F)2.2 C (4.0 F)31 years20 of 100 (Routine)
25 October 2012San Zacarias, MXdaily high min18.9 C (66.0 F)1.1 C (2.0 F)24 years14 of 100 (Routine)
22 October 2012San Zacarias, MXdaily high min18.9 C (66.0 F)1.1 C (2.0 F)27 years15 of 100 (Routine)
21 October 2012San Zacarias, MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)31 years16 of 100 (Routine)
20 October 2012San Zacarias, MXdaily high min18.9 C (66.0 F)3.9 C (7.0 F)9 years19 of 100 (Routine)
19 October 2012San Zacarias, MXdaily high min20.0 C (68.0 F)4.4 C (7.9 F)36 years29 of 100 (Routine)
18 October 2012San Zacarias, MXdaily high min20.6 C (69.1 F)5.0 C (9.0 F)31 years30 of 100 (Routine)
17 October 2012San Zacarias, MXdaily high min18.9 C (66.0 F)1.1 C (2.0 F)31 years16 of 100 (Routine)
16 October 2012San Zacarias, MXdaily high min20.0 C (68.0 F)3.3 C (5.9 F)26 years22 of 100 (Routine)

Climate Trend

30 complete years, 1975 to 2012
Annual mean temperature at San Zacarias as warming stripes, 1975 to 2012 One stripe for each of 30 complete years at San Zacarias, 1975 to 2012. Blue stripes are years cooler than the station's own mean of 20.4 C (68.6 F); red stripes are warmer. The coolest year was 1978, at 19.3 C (66.7 F), and the warmest was 1997, at 21.3 C (70.3 F). The strongest colour marks a difference of 1.1 C (2.0 F). 1975: 19.7 C, -0.6 C from the station mean1978: 19.3 C, -1.1 C from the station mean1979: 20.2 C, -0.1 C from the station mean1980: 20.8 C, +0.4 C from the station mean1981: 21.1 C, +0.7 C from the station mean1982: 20.6 C, +0.3 C from the station mean1983: 20.9 C, +0.6 C from the station mean1985: 21.1 C, +0.8 C from the station mean1986: 20.8 C, +0.4 C from the station mean1987: 20.3 C, -0.1 C from the station mean1988: 20.8 C, +0.5 C from the station mean1989: 20.1 C, -0.2 C from the station mean1992: 19.4 C, -1.0 C from the station mean1993: 19.9 C, -0.5 C from the station mean1994: 20.1 C, -0.3 C from the station mean1995: 20.7 C, +0.3 C from the station mean1996: 20.1 C, -0.2 C from the station mean1997: 21.3 C, +0.9 C from the station mean1998: 20.0 C, -0.4 C from the station mean1999: 19.5 C, -0.8 C from the station mean2001: 20.2 C, -0.2 C from the station mean2002: 19.9 C, -0.5 C from the station mean2003: 20.7 C, +0.4 C from the station mean2004: 20.6 C, +0.2 C from the station mean2006: 20.6 C, +0.3 C from the station mean2008: 20.7 C, +0.3 C from the station mean2009: 21.1 C, +0.7 C from the station mean2010: 19.4 C, -1.0 C from the station mean2011: 20.0 C, -0.4 C from the station mean2012: 20.8 C, +0.4 C from the station mean19751980198519901995200020052010
One stripe for each of 30 complete years at San Zacarias, 1975 to 2012. Blue stripes are years cooler than the station's own mean of 20.4 C (68.6 F); red stripes are warmer. The coolest year was 1978, at 19.3 C (66.7 F), and the warmest was 1997, at 21.3 C (70.3 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at San Zacarias as warming stripes, 1975 to 2012
YearAnnual mean temperatureDifference from the station mean
197519.7 C-0.62 C
197819.3 C-1.06 C
197920.2 C-0.11 C
198020.8 C+0.42 C
198121.1 C+0.71 C
198220.6 C+0.28 C
198320.9 C+0.58 C
198521.1 C+0.76 C
198620.8 C+0.45 C
198720.3 C-0.06 C
198820.8 C+0.46 C
198920.1 C-0.24 C
199219.4 C-0.99 C
199319.9 C-0.48 C
199420.1 C-0.26 C
199520.7 C+0.32 C
199620.1 C-0.23 C
199721.3 C+0.93 C
199820.0 C-0.40 C
199919.5 C-0.82 C
200120.2 C-0.17 C
200219.9 C-0.47 C
200320.7 C+0.38 C
200420.6 C+0.22 C
200620.6 C+0.28 C
200820.7 C+0.32 C
200921.1 C+0.71 C
201019.4 C-0.99 C
201120.0 C-0.35 C
201220.8 C+0.45 C

The fitted trend in annual mean temperature here over 1975 to 2012 is 0.00 C (-0.20 to 0.20) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.36 to 0.35) 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 San Zacarias
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.00 C (-0.20 to 0.20) per decade-0.01 F (-0.36 to 0.35) per decade1975 to 201230Not clearly different from zero
Mean daily maximum0.04 C (-0.22 to 0.30) per decade0.1 F (-0.4 to 0.5) per decade1975 to 201230Not clearly different from zero
Mean daily minimum-0.05 C (-0.34 to 0.24) per decade-0.1 F (-0.6 to 0.4) per decade1975 to 201230Not clearly different from zero

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

1974 to 2012
Yearly extremes at San Zacarias: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.6 C (114.1 F)198540.0 C (104.0 F)39
Coldest night (TNn)0.0 C (32.0 F)19743.9 C (39.0 F)39
Wettest day (Rx1day)95.0 mm (3.7 in)200426.9 mm (1.1 in)39
Wettest five days (Rx5day)95.0 mm (3.7 in)200439.9 mm (1.6 in)39
Longest dry spell (CDD)262 days1995173 days39

Hottest day (TXx)

Hottest day (TXx) at San Zacarias by year The hottest day of the year at San Zacarias, 1974 to 2012. The record is 45.6 C (114.1 F) in 1985, marked on the chart; the median year is 40.0 C (104.0 F). 30354045501980199020002010Record: 45.6 C (114.1 F) in 1985
The hottest day of the year at San Zacarias, 1974 to 2012. The record is 45.6 C (114.1 F) in 1985, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at San Zacarias by year
YearHottest day (TXx)
197431.7 C (89.1 F)
197540.0 C (104.0 F)
197640.6 C (105.1 F)
197742.8 C (109.0 F)
197838.9 C (102.0 F)
197943.9 C (111.0 F)
198040.6 C (105.1 F)
198140.6 C (105.1 F)
198240.6 C (105.1 F)
198340.6 C (105.1 F)
198441.7 C (107.1 F)
198545.6 C (114.1 F)
198640.0 C (104.0 F)
198738.9 C (102.0 F)
198840.6 C (105.1 F)
198940.0 C (104.0 F)
199040.0 C (104.0 F)
199140.0 C (104.0 F)
199237.8 C (100.0 F)
199338.9 C (102.0 F)
199440.0 C (104.0 F)
199538.9 C (102.0 F)
199640.0 C (104.0 F)
199740.6 C (105.1 F)
199840.6 C (105.1 F)
199938.9 C (102.0 F)
200040.0 C (104.0 F)
200140.0 C (104.0 F)
200238.9 C (102.0 F)
200340.0 C (104.0 F)
200438.9 C (102.0 F)
200542.8 C (109.0 F)
200640.6 C (105.1 F)
200742.8 C (109.0 F)
200838.9 C (102.0 F)
200941.7 C (107.1 F)
201040.6 C (105.1 F)
201140.6 C (105.1 F)
201238.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Zacarias by year The coldest night of the year at San Zacarias, 1974 to 2012. The record is 0.0 C (32.0 F) in 1974, marked on the chart; the median year is 3.9 C (39.0 F). 02461980199020002010Record: 0.0 C (32.0 F) in 1974
The coldest night of the year at San Zacarias, 1974 to 2012. The record is 0.0 C (32.0 F) in 1974, marked on the chart; the median year is 3.9 C (39.0 F).
Coldest night (TNn) at San Zacarias by year
YearColdest night (TNn)
19740.0 C (32.0 F)
19751.7 C (35.1 F)
19760.0 C (32.0 F)
19771.1 C (34.0 F)
19785.0 C (41.0 F)
19792.8 C (37.0 F)
19803.9 C (39.0 F)
19815.0 C (41.0 F)
19825.0 C (41.0 F)
19835.0 C (41.0 F)
19841.7 C (35.1 F)
19853.9 C (39.0 F)
19865.0 C (41.0 F)
19870.6 C (33.1 F)
19882.8 C (37.0 F)
19890.6 C (33.1 F)
19903.9 C (39.0 F)
19915.0 C (41.0 F)
19925.6 C (42.1 F)
19935.0 C (41.0 F)
19945.6 C (42.1 F)
19951.7 C (35.1 F)
19962.8 C (37.0 F)
19973.9 C (39.0 F)
19981.7 C (35.1 F)
19993.9 C (39.0 F)
20003.9 C (39.0 F)
20012.8 C (37.0 F)
20025.0 C (41.0 F)
20035.0 C (41.0 F)
20043.9 C (39.0 F)
20052.8 C (37.0 F)
20063.9 C (39.0 F)
20070.6 C (33.1 F)
20082.8 C (37.0 F)
20093.9 C (39.0 F)
20102.8 C (37.0 F)
20110.6 C (33.1 F)
20123.9 C (39.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Zacarias by year The wettest day of the year at San Zacarias, 1974 to 2012. The record is 95.0 mm (3.7 in) in 2004, marked on the chart; the median year is 26.9 mm (1.1 in). 02550751001980199020002010Record: 95.0 mm (3.7 in) in 2004
The wettest day of the year at San Zacarias, 1974 to 2012. The record is 95.0 mm (3.7 in) in 2004, marked on the chart; the median year is 26.9 mm (1.1 in).
Wettest day (Rx1day) at San Zacarias by year
YearWettest day (Rx1day)
197414.0 mm (0.6 in)
197515.7 mm (0.6 in)
197619.8 mm (0.8 in)
19775.8 mm (0.23 in)
197819.8 mm (0.8 in)
197919.8 mm (0.8 in)
198017.8 mm (0.7 in)
198122.9 mm (0.9 in)
198239.9 mm (1.6 in)
198391.9 mm (3.6 in)
198445.0 mm (1.8 in)
198519.8 mm (0.8 in)
198626.9 mm (1.1 in)
198720.8 mm (0.8 in)
198839.9 mm (1.6 in)
198939.9 mm (1.6 in)
19906.4 mm (0.25 in)
199141.9 mm (1.6 in)
199291.9 mm (3.6 in)
199347.8 mm (1.9 in)
199439.9 mm (1.6 in)
199533.8 mm (1.3 in)
199624.4 mm (1.0 in)
199738.9 mm (1.5 in)
199826.4 mm (1.0 in)
199915.0 mm (0.6 in)
200048.3 mm (1.9 in)
200115.7 mm (0.6 in)
200220.8 mm (0.8 in)
200349.8 mm (2.0 in)
200495.0 mm (3.7 in)
20057.9 mm (0.31 in)
200637.8 mm (1.5 in)
200733.8 mm (1.3 in)
200840.9 mm (1.6 in)
200924.9 mm (1.0 in)
201039.9 mm (1.6 in)
201122.4 mm (0.9 in)
201247.8 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Zacarias by year The wettest five days of the year at San Zacarias, 1974 to 2012. The record is 95.0 mm (3.7 in) in 2004, marked on the chart; the median year is 39.9 mm (1.6 in). 02550751001980199020002010Record: 95.0 mm (3.7 in) in 2004
The wettest five days of the year at San Zacarias, 1974 to 2012. The record is 95.0 mm (3.7 in) in 2004, marked on the chart; the median year is 39.9 mm (1.6 in).
Wettest five days (Rx5day) at San Zacarias by year
YearWettest five days (Rx5day)
197414.0 mm (0.6 in)
197515.7 mm (0.6 in)
197619.8 mm (0.8 in)
19778.6 mm (0.34 in)
197840.6 mm (1.6 in)
197927.2 mm (1.1 in)
198017.8 mm (0.7 in)
198129.0 mm (1.1 in)
198285.6 mm (3.4 in)
198391.9 mm (3.6 in)
198461.0 mm (2.4 in)
198523.6 mm (0.9 in)
198628.7 mm (1.1 in)
198724.7 mm (1.0 in)
198839.9 mm (1.6 in)
198939.9 mm (1.6 in)
19909.6 mm (0.38 in)
199154.9 mm (2.2 in)
199291.9 mm (3.6 in)
199349.6 mm (2.0 in)
199459.7 mm (2.4 in)
199533.8 mm (1.3 in)
199652.3 mm (2.1 in)
199770.7 mm (2.8 in)
199835.3 mm (1.4 in)
199925.7 mm (1.0 in)
200048.3 mm (1.9 in)
200115.7 mm (0.6 in)
200233.2 mm (1.3 in)
200350.8 mm (2.0 in)
200495.0 mm (3.7 in)
200517.6 mm (0.7 in)
200672.6 mm (2.9 in)
200734.6 mm (1.4 in)
200840.9 mm (1.6 in)
200962.5 mm (2.5 in)
201039.9 mm (1.6 in)
201122.4 mm (0.9 in)
201281.3 mm (3.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Zacarias by year The longest dry spell of the year at San Zacarias, 1974 to 2012. The record is 262 days in 1995, marked on the chart; the median year is 173 days. 01002003001980199020002010Record: 262 days in 1995
The longest dry spell of the year at San Zacarias, 1974 to 2012. The record is 262 days in 1995, marked on the chart; the median year is 173 days.
Longest dry spell (CDD) at San Zacarias by year
YearLongest dry spell (CDD)
197431 days
1975225 days
197677 days
1977173 days
1978211 days
1979150 days
1980159 days
198188 days
1982173 days
1983126 days
198491 days
198589 days
1986191 days
1987199 days
198896 days
1989252 days
1990159 days
199167 days
199295 days
1993183 days
1994187 days
1995262 days
1996186 days
1997138 days
1998151 days
1999262 days
2000164 days
2001161 days
2002188 days
2003163 days
2004130 days
2005218 days
2006239 days
2007121 days
2008209 days
2009196 days
2010203 days
2011206 days
2012179 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

37 years, 1975 to 2012

A day with at least 30.2 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 110.8 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at San Zacarias: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years30.2 mm (1.2 in)
5 years47.8 mm (1.9 in)
10 years60.9 mm (2.4 in)
25 years79.3 mm (3.1 in)
50 years94.4 mm (3.7 in)Longer than the 37 years of record
100 years110.8 mm (4.4 in)Longer than the 37 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, 37 years of values from 1975 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: 95.0 mm (3.7 in) in 2004; 91.9 mm (3.6 in) in 1983; 91.9 mm (3.6 in) in 1992.

Download the Data

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