Daily records
Page built 2026-10-16
Data as of 2025-12-31
Search
Built 2026-10-16 (16 October 2026)

San Antonio Sur Weather Records (MXN00003049)

Record envelope, standing records and threshold days for San Antonio Sur (MXN00003049), Mexico, with 75 years of record.

Key Facts for San Antonio Sur

  • San Antonio Sur (MXN00003049) is a weather station in Mexico at 23.80 latitude and -110.05 longitude, 400 m (1,312 ft) above sea level.
  • The station reports from 1938 to 2012, 75 years of record.
  • 1,464 records set at San Antonio Sur still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Antonio Sur tied a daily record low minimum temperature of 5.0 C (41.0 F) on 17 December 2012.

About the Station

  • Location: Mexico, 23.80 latitude, -110.05 longitude.
  • Elevation: 400 m (1,312 ft).
  • Period of record: 1938 to 2012, 75 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 Antonio Sur, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Antonio Sur. 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 Antonio Sur. 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 Antonio Sur, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan37.2 C (99.0 F)0.6 C (33.1 F)n/an/a
Feb35.6 C (96.1 F)0.6 C (33.1 F)n/an/a
Mar37.8 C (100.0 F)2.2 C (36.0 F)n/an/a
Apr40.0 C (104.0 F)5.0 C (41.0 F)n/an/a
May41.7 C (107.1 F)8.3 C (46.9 F)n/an/a
Jun41.7 C (107.1 F)10.0 C (50.0 F)n/an/a
Jul41.7 C (107.1 F)12.8 C (55.0 F)n/an/a
Aug41.7 C (107.1 F)13.9 C (57.0 F)n/an/a
Sep40.6 C (105.1 F)12.2 C (54.0 F)n/an/a
Oct40.0 C (104.0 F)9.4 C (48.9 F)n/an/a
Nov37.8 C (100.0 F)5.6 C (42.1 F)n/an/a
Dec35.0 C (95.0 F)1.7 C (35.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Antonio Sur by the year they were set 1,464 records at San Antonio Sur still stand. 2011 holds the most, with 42. 02040601938: 161939: 411940: 321953: 261954: 251955: 391956: 281957: 411958: 231959: 261960: 171961: 271962: 291963: 121964: 161965: 261966: 231967: 271968: 321969: 201970: 171971: 311972: 291973: 301974: 271975: 231976: 181977: 201978: 221979: 201980: 231981: 191982: 281983: 121984: 231985: 101986: 271987: 381988: 181989: 151990: 201991: 121992: 131993: 121994: 211995: 231996: 211997: 161998: 141999: 342000: 282001: 262002: 72003: 162004: 142005: 102006: 222007: 252008: 212009: 312010: 322011: 422012: 28193819571964197119781985199219992006
1,464 records at San Antonio Sur still stand. 2011 holds the most, with 42.
Standing records at San Antonio Sur by the year they were set
Year setStanding records
193816
193941
194032
195326
195425
195539
195628
195741
195823
195926
196017
196127
196229
196312
196416
196526
196623
196727
196832
196920
197017
197131
197229
197330
197427
197523
197618
197720
197822
197920
198023
198119
198228
198312
198423
198510
198627
198738
198818
198915
199020
199112
199213
199312
199421
199523
199621
199716
199814
199934
200028
200126
20027
200316
200414
200510
200622
200725
200821
200931
201032
201142
201228

All-Time Record Progression

6 new records
When San Antonio Sur set new all-time records 6 all-time records were set at San Antonio Sur between 25 June 1982 and 4 September 2007. Each dot is a new record. Record high maximum temperatureRecord low minimum temperatureRecord daily precipitationRecord high minimum temperature25 June 1982: Record high maximum temperature 41.7 C (107.1 F)15 January 1989: Record low minimum temperature 1.1 C (34.0 F)25 January 1990: Record low minimum temperature 0.6 C (33.1 F)1 September 2006: Record daily precipitation 255.8 mm (10.1 in)11 September 2006: Record high minimum temperature 28.9 C (84.0 F)4 September 2007: Record daily precipitation 381.0 mm (15.0 in)19851990199520002005
6 all-time records were set at San Antonio Sur between 25 June 1982 and 4 September 2007. Each dot is a new record.
When San Antonio Sur set new all-time records
DateKindDetail
1982-06-25Record high maximum temperatureRecord high maximum temperature 41.7 C (107.1 F)
1989-01-15Record low minimum temperatureRecord low minimum temperature 1.1 C (34.0 F)
1990-01-25Record low minimum temperatureRecord low minimum temperature 0.6 C (33.1 F)
2006-09-01Record daily precipitationRecord daily precipitation 255.8 mm (10.1 in)
2006-09-11Record high minimum temperatureRecord high minimum temperature 28.9 C (84.0 F)
2007-09-04Record daily precipitationRecord daily precipitation 381.0 mm (15.0 in)

Wettest Day of Each Month

Sep: 381.0 mm (15.0 in)
Record daily precipitation for each month at San Antonio Sur The wettest day on record for each calendar month at San Antonio Sur. The most was 381.0 mm (15.0 in) on 4 September 2007. 0100200300400 Jan: 58.9 mm (2.3 in), 5 January 1981 Jan Feb: 46.2 mm (1.8 in), 11 February 2005 Feb Mar: 42.2 mm (1.7 in), 3 March 1983 Mar Apr: 9.4 mm (0.37 in), 28 April 1986 Apr May: 27.2 mm (1.1 in), 18 May 1979 May Jun: 49.0 mm (1.9 in), 21 June 1999 Jun Jul: 97.3 mm (3.8 in), 23 July 1958 Jul Aug: 158.0 mm (6.2 in), 25 August 2003 Aug Sep: 381.0 mm (15.0 in), 4 September 2007 Sep Oct: 119.1 mm (4.7 in), 6 October 1981 Oct Nov: 56.6 mm (2.2 in), 6 November 1974 Nov Dec: 91.2 mm (3.6 in), 4 December 1992 Dec
The wettest day on record for each calendar month at San Antonio Sur. The most was 381.0 mm (15.0 in) on 4 September 2007.
Record daily precipitation for each month at San Antonio Sur
MonthRecord daily precipitation (mm)Date
Jan58.9 mm (2.3 in)5 January 1981
Feb46.2 mm (1.8 in)11 February 2005
Mar42.2 mm (1.7 in)3 March 1983
Apr9.4 mm (0.37 in)28 April 1986
May27.2 mm (1.1 in)18 May 1979
Jun49.0 mm (1.9 in)21 June 1999
Jul97.3 mm (3.8 in)23 July 1958
Aug158.0 mm (6.2 in)25 August 2003
Sep381.0 mm (15.0 in)4 September 2007
Oct119.1 mm (4.7 in)6 October 1981
Nov56.6 mm (2.2 in)6 November 1974
Dec91.2 mm (3.6 in)4 December 1992

Period of Record Coverage

1938 to 2012
Days with data per year at San Antonio Sur 63 years of record at San Antonio Sur, 1938 to 2012. 8 years have data for under 90 percent of days and are left out of rankings: 1938, 1940, 1953, 1963, 1964, 1969, 1989, 1990. 1938: 183 of 365 days1939: 365 of 365 days1940: 213 of 366 days1953: 237 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 364 of 365 days1959: 365 of 365 days1960: 336 of 366 days1961: 364 of 365 days1962: 364 of 365 days1963: 273 of 365 days1964: 214 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 181 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 333 of 365 days1984: 366 of 366 days1985: 354 of 365 days1986: 363 of 365 days1987: 365 of 365 days1988: 365 of 366 days1989: 304 of 365 days1990: 273 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 334 of 365 days1994: 365 of 365 days1995: 334 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 364 of 365 days2000: 364 of 366 days2001: 363 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 353 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 359 of 365 days2008: 364 of 366 days2009: 365 of 365 days2010: 362 of 365 days2011: 365 of 365 days2012: 366 of 366 days1940196019701980199020002010
63 years of record at San Antonio Sur, 1938 to 2012. 8 years have data for under 90 percent of days and are left out of rankings: 1938, 1940, 1953, 1963, 1964, 1969, 1989, 1990.
Days with data per year at San Antonio Sur
YearDays with dataShare of yearComplete
193818350%No
1939365100%Yes
194021358%No
195323765%No
1954365100%Yes
1955365100%Yes
1956365100%Yes
1957365100%Yes
1958364100%Yes
1959365100%Yes
196033692%Yes
1961364100%Yes
1962364100%Yes
196327375%No
196421458%No
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
196918150%No
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
198333391%Yes
1984366100%Yes
198535497%Yes
198636399%Yes
1987365100%Yes
1988365100%Yes
198930483%No
199027375%No
1991365100%Yes
1992366100%Yes
199333492%Yes
1994365100%Yes
199533492%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999364100%Yes
200036499%Yes
200136399%Yes
2002365100%Yes
2003365100%Yes
200435396%Yes
2005365100%Yes
2006365100%Yes
200735998%Yes
200836499%Yes
2009365100%Yes
201036299%Yes
2011365100%Yes
2012366100%Yes

Latest Records

20
Latest records at San Antonio Sur
DateStationRecordValueBeat old record byOld record stoodSignificance
17 December 2012San Antonio Sur, MXdaily low min (Tie)5.0 C (41.0 F)tie13 years2 of 100 (Routine)
6 December 2012San Antonio Sur, MXdaily low max (Tie)20.0 C (68.0 F)tie55 years5 of 100 (Routine)
3 December 2012San Antonio Sur, MXdaily low max (Tie)20.0 C (68.0 F)tie38 years4 of 100 (Routine)
1 December 2012San Antonio Sur, MXdaily high max (Tie)32.8 C (91.0 F)tie13 years2 of 100 (Routine)
22 November 2012San Antonio Sur, MXdaily high max (Tie)32.8 C (91.0 F)tie46 years5 of 100 (Routine)
11 November 2012San Antonio Sur, MXdaily low max (Tie)25.6 C (78.1 F)tie38 years4 of 100 (Routine)
9 November 2012San Antonio Sur, MXdaily high max35.0 C (95.0 F)1.1 C (2.0 F)39 years21 of 100 (Routine)
8 November 2012San Antonio Sur, MXdaily high max35.6 C (96.1 F)1.7 C (3.1 F)47 years26 of 100 (Routine)
4 November 2012San Antonio Sur, MXmonthly high max (Tie)37.8 C (100.0 F)tie3 years4 of 100 (Routine)
3 November 2012San Antonio Sur, MXdaily rain20.1 mm (0.8 in)9.9 mm (0.39 in)19 years20 of 100 (Routine)
16 October 2012San Antonio Sur, MXdaily low max (Tie)26.7 C (80.1 F)tie48 years5 of 100 (Routine)
15 October 2012San Antonio Sur, MXdaily low max22.8 C (73.0 F)2.2 C (4.0 F)48 years28 of 100 (Routine)
15 October 2012San Antonio Sur, MXdaily rain26.4 mm (1.0 in)6.8 mm (0.27 in)40 years22 of 100 (Routine)
26 September 2012San Antonio Sur, MXdaily rain81.5 mm (3.2 in)36.0 mm (1.4 in)50 years32 of 100 (Routine)
25 September 2012San Antonio Sur, MXdaily high min (Tie)22.8 C (73.0 F)tie72 years7 of 100 (Routine)
10 September 2012San Antonio Sur, MXdaily high min (Tie)23.9 C (75.0 F)tie33 years4 of 100 (Routine)
9 September 2012San Antonio Sur, MXdaily high min (Tie)23.9 C (75.0 F)tie36 years4 of 100 (Routine)
16 August 2012San Antonio Sur, MXdaily low max25.6 C (78.1 F)2.2 C (4.0 F)41 years27 of 100 (Routine)
15 August 2012San Antonio Sur, MXdaily low max (Tie)27.8 C (82.0 F)tie35 years4 of 100 (Routine)
12 August 2012San Antonio Sur, MXdaily high min26.7 C (80.1 F)1.1 C (2.0 F)2 years13 of 100 (Routine)

Climate Trend

50 complete years, 1939 to 2012
Annual mean temperature at San Antonio Sur as warming stripes, 1939 to 2012 One stripe for each of 50 complete years at San Antonio Sur, 1939 to 2012. Blue stripes are years cooler than the station's own mean of 23.0 C (73.5 F); red stripes are warmer. The coolest year was 1939, at 21.9 C (71.3 F), and the warmest was 2011, at 24.1 C (75.4 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1939: 21.9 C, -1.2 C from the station mean1954: 23.6 C, +0.6 C from the station mean1955: 22.7 C, -0.4 C from the station mean1956: 23.2 C, +0.2 C from the station mean1957: 23.4 C, +0.3 C from the station mean1958: 23.4 C, +0.3 C from the station mean1959: 23.5 C, +0.5 C from the station mean1961: 23.1 C, 0.0 C from the station mean1962: 23.4 C, +0.4 C from the station mean1965: 22.8 C, -0.2 C from the station mean1966: 23.1 C, 0.0 C from the station mean1967: 23.2 C, +0.1 C from the station mean1968: 22.6 C, -0.4 C from the station mean1970: 23.0 C, 0.0 C from the station mean1971: 22.8 C, -0.3 C from the station mean1972: 23.1 C, +0.1 C from the station mean1973: 22.3 C, -0.7 C from the station mean1974: 22.6 C, -0.5 C from the station mean1975: 21.9 C, -1.1 C from the station mean1976: 22.4 C, -0.6 C from the station mean1977: 23.3 C, +0.2 C from the station mean1978: 23.1 C, +0.1 C from the station mean1979: 22.5 C, -0.6 C from the station mean1980: 23.5 C, +0.5 C from the station mean1981: 22.8 C, -0.3 C from the station mean1982: 23.2 C, +0.1 C from the station mean1984: 22.5 C, -0.5 C from the station mean1985: 22.5 C, -0.6 C from the station mean1986: 23.2 C, +0.2 C from the station mean1987: 22.7 C, -0.3 C from the station mean1988: 23.2 C, +0.2 C from the station mean1991: 22.3 C, -0.7 C from the station mean1992: 22.6 C, -0.4 C from the station mean1994: 23.1 C, +0.1 C from the station mean1996: 23.4 C, +0.3 C from the station mean1997: 23.1 C, 0.0 C from the station mean1998: 22.9 C, -0.1 C from the station mean1999: 23.2 C, +0.2 C from the station mean2000: 23.3 C, +0.3 C from the station mean2001: 23.2 C, +0.1 C from the station mean2002: 23.3 C, +0.2 C from the station mean2003: 22.9 C, -0.2 C from the station mean2005: 23.2 C, +0.2 C from the station mean2006: 23.8 C, +0.8 C from the station mean2007: 23.1 C, +0.1 C from the station mean2008: 23.2 C, +0.2 C from the station mean2009: 23.8 C, +0.8 C from the station mean2010: 23.3 C, +0.2 C from the station mean2011: 24.1 C, +1.1 C from the station mean2012: 23.9 C, +0.9 C from the station mean19391950196019701980199020002010
One stripe for each of 50 complete years at San Antonio Sur, 1939 to 2012. Blue stripes are years cooler than the station's own mean of 23.0 C (73.5 F); red stripes are warmer. The coolest year was 1939, at 21.9 C (71.3 F), and the warmest was 2011, at 24.1 C (75.4 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at San Antonio Sur as warming stripes, 1939 to 2012
YearAnnual mean temperatureDifference from the station mean
193921.9 C-1.19 C
195423.6 C+0.55 C
195522.7 C-0.38 C
195623.2 C+0.16 C
195723.4 C+0.31 C
195823.4 C+0.33 C
195923.5 C+0.47 C
196123.1 C+0.01 C
196223.4 C+0.35 C
196522.8 C-0.21 C
196623.1 C+0.02 C
196723.2 C+0.13 C
196822.6 C-0.41 C
197023.0 C-0.04 C
197122.8 C-0.26 C
197223.1 C+0.10 C
197322.3 C-0.71 C
197422.6 C-0.49 C
197521.9 C-1.13 C
197622.4 C-0.64 C
197723.3 C+0.22 C
197823.1 C+0.07 C
197922.5 C-0.56 C
198023.5 C+0.48 C
198122.8 C-0.26 C
198223.2 C+0.14 C
198422.5 C-0.53 C
198522.5 C-0.56 C
198623.2 C+0.19 C
198722.7 C-0.35 C
198823.2 C+0.19 C
199122.3 C-0.75 C
199222.6 C-0.41 C
199423.1 C+0.08 C
199623.4 C+0.34 C
199723.1 C+0.01 C
199822.9 C-0.13 C
199923.2 C+0.16 C
200023.3 C+0.27 C
200123.2 C+0.14 C
200223.3 C+0.21 C
200322.9 C-0.16 C
200523.2 C+0.16 C
200623.8 C+0.75 C
200723.1 C+0.07 C
200823.2 C+0.17 C
200923.8 C+0.80 C
201023.3 C+0.22 C
201124.1 C+1.08 C
201223.9 C+0.88 C

The annual mean temperature here has risen by 0.09 C (0.02 to 0.16) per decade over 1939 to 2012. In Fahrenheit: 0.17 F (0.04 to 0.29) 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 San Antonio Sur
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.09 C (0.02 to 0.16) per decade0.17 F (0.04 to 0.29) per decade1939 to 201250Rise
Mean daily maximum0.2 C (0.1 to 0.3) per decade0.3 F (0.2 to 0.5) per decade1939 to 201250Rise
Mean daily minimum-0.01 C (-0.09 to 0.07) per decade-0.02 F (-0.15 to 0.12) per decade1939 to 201250Not 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

1938 to 2012
Yearly extremes at San Antonio Sur: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)198240.0 C (104.0 F)63
Coldest night (TNn)0.6 C (33.1 F)19903.9 C (39.0 F)63
Wettest day (Rx1day)381.0 mm (15.0 in)200762.7 mm (2.5 in)63
Wettest five days (Rx5day)439.1 mm (17.3 in)200791.2 mm (3.6 in)63
Longest dry spell (CDD)208 days1977148 days63

Hottest day (TXx)

Hottest day (TXx) at San Antonio Sur by year The hottest day of the year at San Antonio Sur, 1938 to 2012. The record is 41.7 C (107.1 F) in 1982, marked on the chart; the median year is 40.0 C (104.0 F). 363840421940196019802000Record: 41.7 C (107.1 F) in 1982
The hottest day of the year at San Antonio Sur, 1938 to 2012. The record is 41.7 C (107.1 F) in 1982, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at San Antonio Sur by year
YearHottest day (TXx)
193836.7 C (98.1 F)
193938.3 C (100.9 F)
194038.9 C (102.0 F)
195340.0 C (104.0 F)
195440.0 C (104.0 F)
195541.1 C (106.0 F)
195639.4 C (102.9 F)
195740.0 C (104.0 F)
195841.1 C (106.0 F)
195940.0 C (104.0 F)
196039.4 C (102.9 F)
196140.0 C (104.0 F)
196240.0 C (104.0 F)
196340.0 C (104.0 F)
196437.8 C (100.0 F)
196539.4 C (102.9 F)
196640.6 C (105.1 F)
196738.9 C (102.0 F)
196841.1 C (106.0 F)
196940.6 C (105.1 F)
197038.9 C (102.0 F)
197140.0 C (104.0 F)
197240.0 C (104.0 F)
197340.6 C (105.1 F)
197439.4 C (102.9 F)
197540.0 C (104.0 F)
197639.4 C (102.9 F)
197739.4 C (102.9 F)
197839.4 C (102.9 F)
197940.6 C (105.1 F)
198041.1 C (106.0 F)
198138.3 C (100.9 F)
198241.7 C (107.1 F)
198340.0 C (104.0 F)
198438.3 C (100.9 F)
198540.0 C (104.0 F)
198639.4 C (102.9 F)
198741.7 C (107.1 F)
198840.0 C (104.0 F)
198940.0 C (104.0 F)
199040.0 C (104.0 F)
199140.6 C (105.1 F)
199240.6 C (105.1 F)
199340.0 C (104.0 F)
199440.0 C (104.0 F)
199540.0 C (104.0 F)
199640.6 C (105.1 F)
199740.0 C (104.0 F)
199841.7 C (107.1 F)
199940.6 C (105.1 F)
200040.6 C (105.1 F)
200140.6 C (105.1 F)
200240.6 C (105.1 F)
200340.0 C (104.0 F)
200439.4 C (102.9 F)
200540.0 C (104.0 F)
200640.6 C (105.1 F)
200740.6 C (105.1 F)
200840.0 C (104.0 F)
200941.7 C (107.1 F)
201040.6 C (105.1 F)
201141.7 C (107.1 F)
201241.7 C (107.1 F)

Coldest night (TNn)

Coldest night (TNn) at San Antonio Sur by year The coldest night of the year at San Antonio Sur, 1938 to 2012. The record is 0.6 C (33.1 F) in 1990, marked on the chart; the median year is 3.9 C (39.0 F). 024681940196019802000Record: 0.6 C (33.1 F) in 1990
The coldest night of the year at San Antonio Sur, 1938 to 2012. The record is 0.6 C (33.1 F) in 1990, marked on the chart; the median year is 3.9 C (39.0 F).
Coldest night (TNn) at San Antonio Sur by year
YearColdest night (TNn)
19382.8 C (37.0 F)
19392.8 C (37.0 F)
19405.6 C (42.1 F)
19533.9 C (39.0 F)
19543.3 C (37.9 F)
19551.7 C (35.1 F)
19561.7 C (35.1 F)
19573.9 C (39.0 F)
19585.0 C (41.0 F)
19594.4 C (39.9 F)
19602.8 C (37.0 F)
19613.9 C (39.0 F)
19623.3 C (37.9 F)
19633.9 C (39.0 F)
19642.8 C (37.0 F)
19652.2 C (36.0 F)
19663.9 C (39.0 F)
19672.8 C (37.0 F)
19683.9 C (39.0 F)
19696.7 C (44.1 F)
19705.6 C (42.1 F)
19713.9 C (39.0 F)
19725.0 C (41.0 F)
19732.8 C (37.0 F)
19742.8 C (37.0 F)
19753.3 C (37.9 F)
19764.4 C (39.9 F)
19773.3 C (37.9 F)
19785.0 C (41.0 F)
19794.4 C (39.9 F)
19805.0 C (41.0 F)
19815.6 C (42.1 F)
19823.3 C (37.9 F)
19836.1 C (43.0 F)
19844.4 C (39.9 F)
19853.9 C (39.0 F)
19865.0 C (41.0 F)
19873.9 C (39.0 F)
19883.3 C (37.9 F)
19891.1 C (34.0 F)
19900.6 C (33.1 F)
19912.2 C (36.0 F)
19925.0 C (41.0 F)
19933.9 C (39.0 F)
19945.0 C (41.0 F)
19955.0 C (41.0 F)
19962.8 C (37.0 F)
19973.3 C (37.9 F)
19983.9 C (39.0 F)
19993.9 C (39.0 F)
20002.8 C (37.0 F)
20012.8 C (37.0 F)
20022.8 C (37.0 F)
20031.7 C (35.1 F)
20042.8 C (37.0 F)
20055.0 C (41.0 F)
20063.9 C (39.0 F)
20073.3 C (37.9 F)
20081.7 C (35.1 F)
20095.0 C (41.0 F)
20105.0 C (41.0 F)
20110.6 C (33.1 F)
20123.9 C (39.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Antonio Sur by year The wettest day of the year at San Antonio Sur, 1938 to 2012. The record is 381.0 mm (15.0 in) in 2007, marked on the chart; the median year is 62.7 mm (2.5 in). 01002003004001940196019802000Record: 381.0 mm (15.0 in) in 2007
The wettest day of the year at San Antonio Sur, 1938 to 2012. The record is 381.0 mm (15.0 in) in 2007, marked on the chart; the median year is 62.7 mm (2.5 in).
Wettest day (Rx1day) at San Antonio Sur by year
YearWettest day (Rx1day)
193871.4 mm (2.8 in)
193987.4 mm (3.4 in)
194010.7 mm (0.4 in)
195363.8 mm (2.5 in)
195489.2 mm (3.5 in)
195542.4 mm (1.7 in)
195662.7 mm (2.5 in)
195733.5 mm (1.3 in)
195899.6 mm (3.9 in)
195948.3 mm (1.9 in)
196056.9 mm (2.2 in)
196150.5 mm (2.0 in)
196293.2 mm (3.7 in)
196363.8 mm (2.5 in)
196472.9 mm (2.9 in)
196546.5 mm (1.8 in)
196655.1 mm (2.2 in)
196769.9 mm (2.8 in)
196853.8 mm (2.1 in)
196922.1 mm (0.9 in)
197056.9 mm (2.2 in)
197147.0 mm (1.9 in)
197270.6 mm (2.8 in)
197369.9 mm (2.8 in)
197456.6 mm (2.2 in)
197531.0 mm (1.2 in)
1976239.0 mm (9.4 in)
197750.0 mm (2.0 in)
197869.9 mm (2.8 in)
197954.1 mm (2.1 in)
198068.1 mm (2.7 in)
1981119.1 mm (4.7 in)
1982152.4 mm (6.0 in)
1983115.6 mm (4.6 in)
198452.1 mm (2.1 in)
198563.5 mm (2.5 in)
198654.6 mm (2.1 in)
198754.4 mm (2.1 in)
198824.1 mm (0.9 in)
198957.4 mm (2.3 in)
199060.5 mm (2.4 in)
199181.5 mm (3.2 in)
199291.2 mm (3.6 in)
199364.8 mm (2.6 in)
199453.8 mm (2.1 in)
199573.4 mm (2.9 in)
1996145.3 mm (5.7 in)
199759.9 mm (2.4 in)
1998143.3 mm (5.6 in)
199949.0 mm (1.9 in)
200061.7 mm (2.4 in)
2001167.4 mm (6.6 in)
200250.5 mm (2.0 in)
2003224.5 mm (8.8 in)
200461.2 mm (2.4 in)
200546.2 mm (1.8 in)
2006255.8 mm (10.1 in)
2007381.0 mm (15.0 in)
200861.7 mm (2.4 in)
200968.6 mm (2.7 in)
201071.4 mm (2.8 in)
201132.3 mm (1.3 in)
201281.5 mm (3.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Antonio Sur by year The wettest five days of the year at San Antonio Sur, 1938 to 2012. The record is 439.1 mm (17.3 in) in 2007, marked on the chart; the median year is 91.2 mm (3.6 in). 02004006001940196019802000Record: 439.1 mm (17.3 in) in 2007
The wettest five days of the year at San Antonio Sur, 1938 to 2012. The record is 439.1 mm (17.3 in) in 2007, marked on the chart; the median year is 91.2 mm (3.6 in).
Wettest five days (Rx5day) at San Antonio Sur by year
YearWettest five days (Rx5day)
1938106.9 mm (4.2 in)
1939127.5 mm (5.0 in)
194022.9 mm (0.9 in)
195376.2 mm (3.0 in)
1954124.6 mm (4.9 in)
195543.7 mm (1.7 in)
195673.7 mm (2.9 in)
195766.8 mm (2.6 in)
1958132.2 mm (5.2 in)
195977.3 mm (3.0 in)
196094.5 mm (3.7 in)
1961115.1 mm (4.5 in)
196296.2 mm (3.8 in)
1963158.5 mm (6.2 in)
196480.8 mm (3.2 in)
196571.5 mm (2.8 in)
1966127.4 mm (5.0 in)
196777.3 mm (3.0 in)
196878.7 mm (3.1 in)
196932.3 mm (1.3 in)
197099.8 mm (3.9 in)
197188.7 mm (3.5 in)
1972115.5 mm (4.5 in)
1973124.2 mm (4.9 in)
197487.1 mm (3.4 in)
197544.6 mm (1.8 in)
1976247.4 mm (9.7 in)
197764.3 mm (2.5 in)
197894.6 mm (3.7 in)
197968.4 mm (2.7 in)
198082.1 mm (3.2 in)
1981182.1 mm (7.2 in)
1982241.0 mm (9.5 in)
1983141.6 mm (5.6 in)
198468.1 mm (2.7 in)
198580.0 mm (3.1 in)
198688.1 mm (3.5 in)
198798.6 mm (3.9 in)
198824.4 mm (1.0 in)
198975.0 mm (3.0 in)
1990133.2 mm (5.2 in)
1991131.6 mm (5.2 in)
199291.2 mm (3.6 in)
1993120.2 mm (4.7 in)
1994106.0 mm (4.2 in)
199590.2 mm (3.6 in)
1996180.4 mm (7.1 in)
199784.3 mm (3.3 in)
1998229.2 mm (9.0 in)
199964.7 mm (2.5 in)
200081.6 mm (3.2 in)
2001368.3 mm (14.5 in)
200268.6 mm (2.7 in)
2003315.2 mm (12.4 in)
2004146.5 mm (5.8 in)
200566.5 mm (2.6 in)
2006335.8 mm (13.2 in)
2007439.1 mm (17.3 in)
200882.3 mm (3.2 in)
2009114.3 mm (4.5 in)
201071.7 mm (2.8 in)
201144.0 mm (1.7 in)
2012110.6 mm (4.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Antonio Sur by year The longest dry spell of the year at San Antonio Sur, 1938 to 2012. The record is 208 days in 1977, marked on the chart; the median year is 148 days. 0501001502002501940196019802000Record: 208 days in 1977
The longest dry spell of the year at San Antonio Sur, 1938 to 2012. The record is 208 days in 1977, marked on the chart; the median year is 148 days.
Longest dry spell (CDD) at San Antonio Sur by year
YearLongest dry spell (CDD)
193836 days
1939161 days
194071 days
195357 days
1954170 days
1955183 days
195691 days
1957119 days
195897 days
1959134 days
1960190 days
1961170 days
1962173 days
1963179 days
196492 days
1965145 days
1966158 days
1967193 days
1968116 days
196966 days
1970128 days
1971173 days
1972191 days
1973134 days
1974182 days
1975154 days
1976163 days
1977208 days
1978146 days
1979102 days
198096 days
1981120 days
1982171 days
1983124 days
1984137 days
198599 days
1986116 days
198797 days
1988183 days
198988 days
1990112 days
1991167 days
1992106 days
1993122 days
1994182 days
1995167 days
1996183 days
1997145 days
1998161 days
1999171 days
2000102 days
2001114 days
2002168 days
2003146 days
2004124 days
2005148 days
2006167 days
2007153 days
2008151 days
2009193 days
2010165 days
2011185 days
2012156 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, 1939 to 2012

A day with at least 64.2 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 382.5 mm (15.1 in) of rain is expected about once in 100 years.

Rainfall return levels at San Antonio Sur: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years64.2 mm (2.5 in)
5 years101.3 mm (4.0 in)
10 years138.5 mm (5.5 in)
25 years207.7 mm (8.2 in)
50 years281.8 mm (11.1 in)
100 years382.5 mm (15.1 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 1939 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: 381.0 mm (15.0 in) in 2007; 255.8 mm (10.1 in) in 2006; 239.0 mm (9.4 in) in 1976.

Download the Data

  • Data for San Antonio Sur standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for San Antonio Sur 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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