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San Anton Weather Records (MXN00011061)

Record envelope, standing records and threshold days for San Anton (MXN00011061), Mexico, with 50 years of record.

Key Facts for San Anton

  • San Anton (MXN00011061) is a weather station in Mexico at 21.47 latitude and -101.22 longitude, 2,090 m (6,856 ft) above sea level.
  • The station reports from 1964 to 2013, 50 years of record.
  • 1,464 records set at San Anton still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Anton set a daily record high minimum temperature of 17.8 C (64.0 F) on 18 April 2013.

About the Station

  • Location: Mexico, 21.47 latitude, -101.22 longitude.
  • Elevation: 2,090 m (6,856 ft).
  • Period of record: 1964 to 2013, 50 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 Anton, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Anton. 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 San Anton. 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 Anton, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.0 C (86.0 F)-8.3 C (17.1 F)n/an/a
Feb30.6 C (87.1 F)-5.0 C (23.0 F)n/an/a
Mar37.8 C (100.0 F)-4.4 C (24.1 F)n/an/a
Apr40.0 C (104.0 F)0.0 C (32.0 F)n/an/a
May40.0 C (104.0 F)1.7 C (35.1 F)n/an/a
Jun38.9 C (102.0 F)1.7 C (35.1 F)n/an/a
Jul35.0 C (95.0 F)1.7 C (35.1 F)n/an/a
Aug35.6 C (96.1 F)3.9 C (39.0 F)n/an/a
Sep35.0 C (95.0 F)0.0 C (32.0 F)n/an/a
Oct35.0 C (95.0 F)0.0 C (32.0 F)n/an/a
Nov32.8 C (91.0 F)-2.8 C (27.0 F)n/an/a
Dec31.7 C (89.1 F)-5.0 C (23.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Anton by the year they were set 1,464 records at San Anton still stand. 1965 holds the most, with 118. 0501001501964: 991965: 1181966: 571967: 781968: 111969: 511970: 251971: 441972: 121973: 201974: 701975: 111976: 381977: 191978: 341979: 271980: 351981: 161982: 131983: 181984: 151985: 181986: 381987: 151988: 211989: 71990: 151991: 231992: 251993: 101994: 101995: 301996: 151997: 421998: 741999: 372000: 172001: 92002: 122003: 202004: 522005: 142006: 242007: 442008: 112009: 32010: 152011: 252012: 152013: 121964196919741979198419891994199920042009
1,464 records at San Anton still stand. 1965 holds the most, with 118.
Standing records at San Anton by the year they were set
Year setStanding records
196499
1965118
196657
196778
196811
196951
197025
197144
197212
197320
197470
197511
197638
197719
197834
197927
198035
198116
198213
198318
198415
198518
198638
198715
198821
19897
199015
199123
199225
199310
199410
199530
199615
199742
199874
199937
200017
20019
200212
200320
200452
200514
200624
200744
200811
20093
201015
201125
201215
201312

Wettest Day of Each Month

Jul: 96.5 mm (3.8 in)
Record daily precipitation for each month at San Anton The wettest day on record for each calendar month at San Anton. The most was 96.5 mm (3.8 in) on 15 July 1983. 0255075100 Jan: 53.3 mm (2.1 in), 23 January 1980 Jan Feb: 80.3 mm (3.2 in), 4 February 2010 Feb Mar: 49.8 mm (2.0 in), 2 March 1968 Mar Apr: 29.0 mm (1.1 in), 14 April 1981 Apr May: 91.9 mm (3.6 in), 25 May 1971 May Jun: 85.3 mm (3.4 in), 10 June 1975 Jun Jul: 96.5 mm (3.8 in), 15 July 1983 Jul Aug: 62.0 mm (2.4 in), 8 August 2004 Aug Sep: 68.8 mm (2.7 in), 11 September 1974 Sep Oct: 62.0 mm (2.4 in), 12 October 1983 Oct Nov: 30.5 mm (1.2 in), 4 November 1964 Nov Dec: 30.0 mm (1.2 in), 8 December 1974 Dec
The wettest day on record for each calendar month at San Anton. The most was 96.5 mm (3.8 in) on 15 July 1983.
Record daily precipitation for each month at San Anton
MonthRecord daily precipitation (mm)Date
Jan53.3 mm (2.1 in)23 January 1980
Feb80.3 mm (3.2 in)4 February 2010
Mar49.8 mm (2.0 in)2 March 1968
Apr29.0 mm (1.1 in)14 April 1981
May91.9 mm (3.6 in)25 May 1971
Jun85.3 mm (3.4 in)10 June 1975
Jul96.5 mm (3.8 in)15 July 1983
Aug62.0 mm (2.4 in)8 August 2004
Sep68.8 mm (2.7 in)11 September 1974
Oct62.0 mm (2.4 in)12 October 1983
Nov30.5 mm (1.2 in)4 November 1964
Dec30.0 mm (1.2 in)8 December 1974

Period of Record Coverage

1964 to 2013
Days with data per year at San Anton 50 years of record at San Anton, 1964 to 2013. 11 years have data for under 90 percent of days and are left out of rankings: 1968, 1970, 1971, 1993, 1994, 2000, 2002, 2005 and others. 1964: 337 of 366 days1965: 362 of 365 days1966: 360 of 365 days1967: 364 of 365 days1968: 90 of 366 days1969: 361 of 365 days1970: 120 of 365 days1971: 260 of 365 days1972: 365 of 366 days1973: 334 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 364 of 366 days1977: 364 of 365 days1978: 365 of 365 days1979: 364 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 333 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 365 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 335 of 366 days1993: 151 of 365 days1994: 214 of 365 days1995: 364 of 365 days1996: 333 of 366 days1997: 334 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 291 of 366 days2001: 339 of 365 days2002: 233 of 365 days2003: 334 of 365 days2004: 366 of 366 days2005: 184 of 365 days2006: 365 of 365 days2007: 335 of 365 days2008: 213 of 366 days2009: 61 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 120 of 365 days19701980199020002010
50 years of record at San Anton, 1964 to 2013. 11 years have data for under 90 percent of days and are left out of rankings: 1968, 1970, 1971, 1993, 1994, 2000, 2002, 2005 and others.
Days with data per year at San Anton
YearDays with dataShare of yearComplete
196433792%Yes
196536299%Yes
196636099%Yes
1967364100%Yes
19689025%No
196936199%Yes
197012033%No
197126071%No
1972365100%Yes
197333492%Yes
1974365100%Yes
1975365100%Yes
197636499%Yes
1977364100%Yes
1978365100%Yes
1979364100%Yes
1980366100%Yes
1981365100%Yes
198233391%Yes
1983365100%Yes
1984365100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988365100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
199233592%Yes
199315141%No
199421459%No
1995364100%Yes
199633391%Yes
199733492%Yes
1998365100%Yes
1999365100%Yes
200029180%No
200133993%Yes
200223364%No
200333492%Yes
2004366100%Yes
200518450%No
2006365100%Yes
200733592%Yes
200821358%No
20096117%No
2010365100%Yes
2011365100%Yes
2012366100%Yes
201312033%No

Latest Records

20
Latest records at San Anton
DateStationRecordValueBeat old record byOld record stoodSignificance
18 April 2013San Anton, MXdaily high min17.8 C (64.0 F)1.1 C (2.0 F)7 years10 of 100 (Routine)
17 April 2013San Anton, MXdaily high min16.7 C (62.1 F)1.7 C (3.1 F)7 years12 of 100 (Routine)
12 April 2013San Anton, MXdaily high min (Tie)15.6 C (60.1 F)tie15 years2 of 100 (Routine)
9 April 2013San Anton, MXdaily high min17.8 C (64.0 F)2.2 C (4.0 F)48 years25 of 100 (Routine)
8 April 2013San Anton, MXdaily high min (Tie)16.7 C (62.1 F)tie32 years3 of 100 (Routine)
3 March 2013San Anton, MXdaily low max13.9 C (57.0 F)1.1 C (2.0 F)12 years10 of 100 (Routine)
21 February 2013San Anton, MXdaily high min13.9 C (57.0 F)1.1 C (2.0 F)15 years12 of 100 (Routine)
20 February 2013San Anton, MXdaily high min (Tie)11.7 C (53.1 F)tie29 years3 of 100 (Routine)
14 February 2013San Anton, MXdaily high min11.7 C (53.1 F)0.6 C (1.1 F)16 years10 of 100 (Routine)
13 February 2013San Anton, MXdaily high min13.9 C (57.0 F)2.8 C (5.0 F)16 years17 of 100 (Routine)
12 February 2013San Anton, MXdaily high min13.9 C (57.0 F)3.9 C (7.0 F)47 years30 of 100 (Routine)
11 February 2013San Anton, MXdaily high min (Tie)11.7 C (53.1 F)tie47 years4 of 100 (Routine)
10 February 2013San Anton, MXdaily high min (Tie)11.7 C (53.1 F)tie44 years4 of 100 (Routine)
29 January 2013San Anton, MXdaily high min11.7 C (53.1 F)1.7 C (3.1 F)10 years13 of 100 (Routine)
16 January 2013San Anton, MXdaily high min11.7 C (53.1 F)0.6 C (1.1 F)14 years10 of 100 (Routine)
15 January 2013San Anton, MXdaily high min11.7 C (53.1 F)1.1 C (2.0 F)6 years9 of 100 (Routine)
12 January 2013San Anton, MXdaily high min11.7 C (53.1 F)1.7 C (3.1 F)15 years14 of 100 (Routine)
28 December 2012San Anton, MXdaily high min (Tie)10.6 C (51.1 F)tie5 years1 of 100 (Routine)
5 December 2012San Anton, MXdaily rain22.9 mm (0.9 in)13.0 mm (0.5 in)33 years20 of 100 (Routine)
5 November 2012San Anton, MXdaily rain22.9 mm (0.9 in)13.0 mm (0.5 in)21 years20 of 100 (Routine)

Climate Trend

31 complete years, 1965 to 2012
Annual mean temperature at San Anton as warming stripes, 1965 to 2012 One stripe for each of 31 complete years at San Anton, 1965 to 2012. Blue stripes are years cooler than the station's own mean of 15.6 C (60.0 F); red stripes are warmer. The coolest year was 1995, at 13.7 C (56.6 F), and the warmest was 1965, at 19.2 C (66.5 F). The strongest colour marks a difference of 3.6 C (6.5 F). 1965: 19.2 C, +3.6 C from the station mean1966: 17.8 C, +2.2 C from the station mean1967: 18.7 C, +3.1 C from the station mean1969: 16.7 C, +1.2 C from the station mean1972: 15.3 C, -0.3 C from the station mean1974: 14.3 C, -1.3 C from the station mean1975: 14.5 C, -1.1 C from the station mean1976: 13.9 C, -1.7 C from the station mean1977: 14.5 C, -1.1 C from the station mean1978: 14.3 C, -1.2 C from the station mean1979: 14.6 C, -1.0 C from the station mean1980: 14.4 C, -1.2 C from the station mean1981: 14.3 C, -1.2 C from the station mean1983: 15.2 C, -0.4 C from the station mean1984: 14.9 C, -0.7 C from the station mean1985: 14.3 C, -1.3 C from the station mean1986: 13.9 C, -1.6 C from the station mean1987: 14.5 C, -1.1 C from the station mean1988: 14.8 C, -0.8 C from the station mean1989: 14.7 C, -0.9 C from the station mean1990: 14.1 C, -1.5 C from the station mean1991: 14.4 C, -1.1 C from the station mean1995: 13.7 C, -1.9 C from the station mean1998: 17.7 C, +2.1 C from the station mean1999: 17.6 C, +2.0 C from the station mean2001: 14.8 C, -0.8 C from the station mean2004: 17.5 C, +2.0 C from the station mean2006: 15.4 C, -0.1 C from the station mean2010: 17.4 C, +1.8 C from the station mean2011: 18.1 C, +2.5 C from the station mean2012: 17.3 C, +1.8 C from the station mean1965197019751980198519901995200020052010
One stripe for each of 31 complete years at San Anton, 1965 to 2012. Blue stripes are years cooler than the station's own mean of 15.6 C (60.0 F); red stripes are warmer. The coolest year was 1995, at 13.7 C (56.6 F), and the warmest was 1965, at 19.2 C (66.5 F). The strongest colour marks a difference of 3.6 C (6.5 F).
Annual mean temperature at San Anton as warming stripes, 1965 to 2012
YearAnnual mean temperatureDifference from the station mean
196519.2 C+3.57 C
196617.8 C+2.19 C
196718.7 C+3.14 C
196916.7 C+1.15 C
197215.3 C-0.27 C
197414.3 C-1.32 C
197514.5 C-1.08 C
197613.9 C-1.69 C
197714.5 C-1.07 C
197814.3 C-1.24 C
197914.6 C-0.97 C
198014.4 C-1.18 C
198114.3 C-1.24 C
198315.2 C-0.40 C
198414.9 C-0.71 C
198514.3 C-1.28 C
198613.9 C-1.65 C
198714.5 C-1.06 C
198814.8 C-0.79 C
198914.7 C-0.90 C
199014.1 C-1.47 C
199114.4 C-1.14 C
199513.7 C-1.92 C
199817.7 C+2.13 C
199917.6 C+2.04 C
200114.8 C-0.80 C
200417.5 C+1.95 C
200615.4 C-0.14 C
201017.4 C+1.77 C
201118.1 C+2.49 C
201217.3 C+1.76 C

The fitted trend in annual mean temperature here over 1965 to 2012 is 0.1 C (-0.3 to 0.6) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.6 to 1.1) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Anton
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (-0.3 to 0.6) per decade0.3 F (-0.6 to 1.1) per decade1965 to 201231Not clearly different from zero
Mean daily maximum-0.1 C (-0.8 to 0.7) per decade-0.1 F (-1.5 to 1.3) per decade1965 to 201231Not clearly different from zero
Mean daily minimum0.4 C (0.1 to 0.6) per decade0.6 F (0.2 to 1.1) per decade1965 to 201231Rise

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

1964 to 2013
Yearly extremes at San Anton: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)196730.0 C (86.0 F)50
Coldest night (TNn)-8.3 C (17.1 F)19790.0 C (32.0 F)50
Wettest day (Rx1day)96.5 mm (3.8 in)198347.0 mm (1.9 in)50
Wettest five days (Rx5day)181.7 mm (7.2 in)1983102.3 mm (4.0 in)50
Longest dry spell (CDD)365 days199580 days50

Hottest day (TXx)

Hottest day (TXx) at San Anton by year The hottest day of the year at San Anton, 1964 to 2013. The record is 40.0 C (104.0 F) in 1967, marked on the chart; the median year is 30.0 C (86.0 F). 2530354019701980199020002010Record: 40.0 C (104.0 F) in 1967
The hottest day of the year at San Anton, 1964 to 2013. The record is 40.0 C (104.0 F) in 1967, marked on the chart; the median year is 30.0 C (86.0 F).
Hottest day (TXx) at San Anton by year
YearHottest day (TXx)
196435.6 C (96.1 F)
196538.9 C (102.0 F)
196638.9 C (102.0 F)
196740.0 C (104.0 F)
196837.8 C (100.0 F)
196936.7 C (98.1 F)
197030.6 C (87.1 F)
197130.0 C (86.0 F)
197230.6 C (87.1 F)
197330.0 C (86.0 F)
197428.9 C (84.0 F)
197531.7 C (89.1 F)
197629.4 C (84.9 F)
197728.9 C (84.0 F)
197828.9 C (84.0 F)
197926.7 C (80.1 F)
198029.4 C (84.9 F)
198126.7 C (80.1 F)
198227.8 C (82.0 F)
198332.2 C (90.0 F)
198429.4 C (84.9 F)
198526.7 C (80.1 F)
198631.7 C (89.1 F)
198728.3 C (82.9 F)
198830.0 C (86.0 F)
198927.8 C (82.0 F)
199027.8 C (82.0 F)
199127.8 C (82.0 F)
199225.0 C (77.0 F)
199325.0 C (77.0 F)
199425.0 C (77.0 F)
199525.0 C (77.0 F)
199625.0 C (77.0 F)
199726.7 C (80.1 F)
199831.1 C (88.0 F)
199937.8 C (100.0 F)
200033.9 C (93.0 F)
200127.8 C (82.0 F)
200228.9 C (84.0 F)
200332.8 C (91.0 F)
200436.7 C (98.1 F)
200535.0 C (95.0 F)
200630.6 C (87.1 F)
200735.0 C (95.0 F)
200830.6 C (87.1 F)
200927.8 C (82.0 F)
201035.0 C (95.0 F)
201135.0 C (95.0 F)
201232.8 C (91.0 F)
201332.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Anton by year The coldest night of the year at San Anton, 1964 to 2013. The record is -8.3 C (17.1 F) in 1979, marked on the chart; the median year is 0.0 C (32.0 F). -10-50519701980199020002010Record: -8.3 C (17.1 F) in 1979
The coldest night of the year at San Anton, 1964 to 2013. The record is -8.3 C (17.1 F) in 1979, marked on the chart; the median year is 0.0 C (32.0 F).
Coldest night (TNn) at San Anton by year
YearColdest night (TNn)
19641.7 C (35.1 F)
19650.6 C (33.1 F)
19660.0 C (32.0 F)
19670.0 C (32.0 F)
19680.0 C (32.0 F)
19690.0 C (32.0 F)
19700.0 C (32.0 F)
19710.0 C (32.0 F)
1972-4.4 C (24.1 F)
19730.0 C (32.0 F)
1974-5.0 C (23.0 F)
19750.0 C (32.0 F)
1976-5.0 C (23.0 F)
1977-4.4 C (24.1 F)
1978-4.4 C (24.1 F)
1979-8.3 C (17.1 F)
1980-3.3 C (26.1 F)
1981-6.7 C (19.9 F)
1982-5.0 C (23.0 F)
1983-3.3 C (26.1 F)
1984-2.2 C (28.0 F)
1985-3.3 C (26.1 F)
1986-2.2 C (28.0 F)
19870.6 C (33.1 F)
1988-6.1 C (21.0 F)
19891.7 C (35.1 F)
1990-0.6 C (30.9 F)
19910.0 C (32.0 F)
19921.7 C (35.1 F)
19930.0 C (32.0 F)
19943.9 C (39.0 F)
19950.0 C (32.0 F)
19960.0 C (32.0 F)
19970.0 C (32.0 F)
1998-5.0 C (23.0 F)
19992.8 C (37.0 F)
20000.6 C (33.1 F)
2001-4.4 C (24.1 F)
20020.0 C (32.0 F)
20030.0 C (32.0 F)
20040.0 C (32.0 F)
20051.7 C (35.1 F)
20060.0 C (32.0 F)
20070.0 C (32.0 F)
20080.0 C (32.0 F)
20092.8 C (37.0 F)
20100.0 C (32.0 F)
20110.0 C (32.0 F)
2012-1.1 C (30.0 F)
20133.9 C (39.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Anton by year The wettest day of the year at San Anton, 1964 to 2013. The record is 96.5 mm (3.8 in) in 1983, marked on the chart; the median year is 47.0 mm (1.9 in). 025507510019701980199020002010Record: 96.5 mm (3.8 in) in 1983
The wettest day of the year at San Anton, 1964 to 2013. The record is 96.5 mm (3.8 in) in 1983, marked on the chart; the median year is 47.0 mm (1.9 in).
Wettest day (Rx1day) at San Anton by year
YearWettest day (Rx1day)
196459.9 mm (2.4 in)
196559.9 mm (2.4 in)
196649.8 mm (2.0 in)
196749.8 mm (2.0 in)
196849.8 mm (2.0 in)
196973.9 mm (2.9 in)
197039.9 mm (1.6 in)
197191.9 mm (3.6 in)
197246.0 mm (1.8 in)
197349.8 mm (2.0 in)
197468.8 mm (2.7 in)
197585.3 mm (3.4 in)
197659.9 mm (2.4 in)
197745.0 mm (1.8 in)
197857.9 mm (2.3 in)
197930.0 mm (1.2 in)
198079.8 mm (3.1 in)
198145.0 mm (1.8 in)
198239.9 mm (1.6 in)
198396.5 mm (3.8 in)
198453.3 mm (2.1 in)
198545.0 mm (1.8 in)
198647.0 mm (1.9 in)
198750.0 mm (2.0 in)
198859.9 mm (2.4 in)
198942.9 mm (1.7 in)
199059.9 mm (2.4 in)
199139.9 mm (1.6 in)
199239.9 mm (1.6 in)
19930.0 mm (0.00 in)
19940.0 mm (0.00 in)
19950.0 mm (0.00 in)
199630.0 mm (1.2 in)
199711.9 mm (0.5 in)
199824.9 mm (1.0 in)
199913.5 mm (0.5 in)
200024.9 mm (1.0 in)
200115.7 mm (0.6 in)
200239.9 mm (1.6 in)
200347.0 mm (1.9 in)
200462.0 mm (2.4 in)
200547.0 mm (1.9 in)
200659.9 mm (2.4 in)
200772.4 mm (2.9 in)
200875.4 mm (3.0 in)
200912.4 mm (0.5 in)
201080.3 mm (3.2 in)
201126.4 mm (1.0 in)
201249.3 mm (1.9 in)
20137.4 mm (0.29 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Anton by year The wettest five days of the year at San Anton, 1964 to 2013. The record is 181.7 mm (7.2 in) in 1983, marked on the chart; the median year is 102.3 mm (4.0 in). 05010015020019701980199020002010Record: 181.7 mm (7.2 in) in 1983
The wettest five days of the year at San Anton, 1964 to 2013. The record is 181.7 mm (7.2 in) in 1983, marked on the chart; the median year is 102.3 mm (4.0 in).
Wettest five days (Rx5day) at San Anton by year
YearWettest five days (Rx5day)
1964169.7 mm (6.7 in)
1965169.7 mm (6.7 in)
196697.0 mm (3.8 in)
1967114.9 mm (4.5 in)
196899.3 mm (3.9 in)
1969110.7 mm (4.4 in)
197077.4 mm (3.0 in)
1971156.2 mm (6.1 in)
197256.9 mm (2.2 in)
1973118.4 mm (4.7 in)
1974115.6 mm (4.6 in)
1975160.5 mm (6.3 in)
1976136.4 mm (5.4 in)
197745.0 mm (1.8 in)
1978106.6 mm (4.2 in)
197967.3 mm (2.6 in)
1980121.1 mm (4.8 in)
198181.8 mm (3.2 in)
198280.8 mm (3.2 in)
1983181.7 mm (7.2 in)
198499.7 mm (3.9 in)
198586.1 mm (3.4 in)
1986109.4 mm (4.3 in)
1987112.5 mm (4.4 in)
1988104.9 mm (4.1 in)
198977.2 mm (3.0 in)
1990109.7 mm (4.3 in)
1991140.2 mm (5.5 in)
199264.5 mm (2.5 in)
19930.0 mm (0.00 in)
19940.0 mm (0.00 in)
19950.0 mm (0.00 in)
199671.3 mm (2.8 in)
199727.7 mm (1.1 in)
199888.1 mm (3.5 in)
199914.7 mm (0.6 in)
200060.7 mm (2.4 in)
200132.8 mm (1.3 in)
2002119.4 mm (4.7 in)
2003131.6 mm (5.2 in)
2004144.8 mm (5.7 in)
200580.8 mm (3.2 in)
2006136.7 mm (5.4 in)
2007172.1 mm (6.8 in)
2008138.4 mm (5.4 in)
200919.3 mm (0.8 in)
2010157.1 mm (6.2 in)
201144.2 mm (1.7 in)
2012123.0 mm (4.8 in)
20137.4 mm (0.29 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Anton by year The longest dry spell of the year at San Anton, 1964 to 2013. The record is 365 days in 1995, marked on the chart; the median year is 80 days. 010020030040019701980199020002010Record: 365 days in 1995
The longest dry spell of the year at San Anton, 1964 to 2013. The record is 365 days in 1995, marked on the chart; the median year is 80 days.
Longest dry spell (CDD) at San Anton by year
YearLongest dry spell (CDD)
196462 days
196537 days
196650 days
196749 days
196833 days
196971 days
1970148 days
197163 days
197259 days
197361 days
197470 days
197596 days
197659 days
197779 days
197843 days
197985 days
198050 days
198134 days
198266 days
198374 days
198480 days
198597 days
198666 days
198770 days
1988122 days
1989121 days
199095 days
1991140 days
1992160 days
1993151 days
1994245 days
1995365 days
1996213 days
199794 days
1998121 days
1999187 days
2000161 days
2001189 days
200248 days
200388 days
200456 days
200567 days
2006181 days
200754 days
200892 days
200930 days
201097 days
2011126 days
201254 days
2013117 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

41 years, 1964 to 2012

A day with at least 50.3 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 96.6 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at San Anton: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years50.3 mm (2.0 in)
5 years68.7 mm (2.7 in)
10 years77.9 mm (3.1 in)
25 years87.0 mm (3.4 in)
50 years92.3 mm (3.6 in)Longer than the 41 years of record
100 years96.6 mm (3.8 in)Longer than the 41 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, 41 years of values from 1964 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: 96.5 mm (3.8 in) in 1983; 91.9 mm (3.6 in) in 1971; 85.3 mm (3.4 in) in 1975.

Download the Data

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