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San Ildelfonso Villa Alta Weather Records (MXN00020177)

Record envelope, standing records and threshold days for San Ildelfonso Villa Alta (MXN00020177), Mexico, with 80 years of record.

Key Facts for San Ildelfonso Villa Alta

  • San Ildelfonso Villa Alta (MXN00020177) is a weather station in Mexico at 17.35 latitude and -96.15 longitude, 1,268 m (4,160 ft) above sea level.
  • The station reports from 1930 to 2009, 80 years of record.
  • 1,464 records set at San Ildelfonso Villa Alta still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Ildelfonso Villa Alta tied a daily record low maximum temperature of 15.6 C (60.1 F) on 17 November 2009.

About the Station

  • Location: Mexico, 17.35 latitude, -96.15 longitude.
  • Elevation: 1,268 m (4,160 ft).
  • Period of record: 1930 to 2009, 80 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 Ildelfonso Villa Alta, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Ildelfonso Villa Alta. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at San Ildelfonso Villa Alta. 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 Ildelfonso Villa Alta, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.9 C (93.0 F)3.9 C (39.0 F)n/an/a
Feb38.9 C (102.0 F)1.7 C (35.1 F)n/an/a
Mar40.0 C (104.0 F)5.0 C (41.0 F)n/an/a
Apr39.4 C (102.9 F)5.6 C (42.1 F)n/an/a
May38.9 C (102.0 F)10.0 C (50.0 F)n/an/a
Jun36.7 C (98.1 F)10.0 C (50.0 F)n/an/a
Jul39.4 C (102.9 F)8.9 C (48.0 F)n/an/a
Aug35.0 C (95.0 F)7.8 C (46.0 F)n/an/a
Sep37.2 C (99.0 F)8.9 C (48.0 F)n/an/a
Oct30.6 C (87.1 F)7.8 C (46.0 F)n/an/a
Nov35.6 C (96.1 F)3.9 C (39.0 F)n/an/a
Dec37.8 C (100.0 F)3.9 C (39.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Ildelfonso Villa Alta by the year they were set 1,464 records at San Ildelfonso Villa Alta still stand. 1952 holds the most, with 72. 0204060801930: 31931: 361932: 361933: 371934: 241935: 341936: 11938: 161939: 271950: 261951: 221952: 721953: 521954: 391955: 491956: 291957: 321958: 301959: 191960: 271961: 351962: 291963: 241964: 211965: 321966: 341967: 201968: 171969: 301970: 291971: 231972: 201973: 551974: 101975: 271976: 181977: 201978: 201979: 291980: 131981: 71982: 71983: 261984: 271993: 492001: 172002: 162003: 132004: 402005: 122006: 612007: 42008: 32009: 65193019361953195919651971197719832004
1,464 records at San Ildelfonso Villa Alta still stand. 1952 holds the most, with 72.
Standing records at San Ildelfonso Villa Alta by the year they were set
Year setStanding records
19303
193136
193236
193337
193424
193534
19361
193816
193927
195026
195122
195272
195352
195439
195549
195629
195732
195830
195919
196027
196135
196229
196324
196421
196532
196634
196720
196817
196930
197029
197123
197220
197355
197410
197527
197618
197720
197820
197929
198013
19817
19827
198326
198427
199349
200117
200216
200313
200440
200512
200661
20074
20083
200965

All-Time Record Progression

1 new records
When San Ildelfonso Villa Alta set new all-time records 1 all-time records were set at San Ildelfonso Villa Alta between 23 February 1976 and 23 February 1976. Each dot is a new record. Record low maximum temperature23 February 1976: Record low maximum temperature 8.9 C (48.0 F)
1 all-time records were set at San Ildelfonso Villa Alta between 23 February 1976 and 23 February 1976. Each dot is a new record.
When San Ildelfonso Villa Alta set new all-time records
DateKindDetail
1976-02-23Record low maximum temperatureRecord low maximum temperature 8.9 C (48.0 F)

Wettest Day of Each Month

Oct: 249.9 mm (9.8 in)
Record daily precipitation for each month at San Ildelfonso Villa Alta The wettest day on record for each calendar month at San Ildelfonso Villa Alta. The most was 249.9 mm (9.8 in) on 12 October 1950. 0100200300 Jan: 79.8 mm (3.1 in), 24 January 1951 Jan Feb: 31.5 mm (1.2 in), 22 February 2009 Feb Mar: 64.8 mm (2.6 in), 15 March 1933 Mar Apr: 54.9 mm (2.2 in), 29 April 1954 Apr May: 97.8 mm (3.9 in), 21 May 1952 May Jun: 213.4 mm (8.4 in), 9 June 1978 Jun Jul: 115.8 mm (4.6 in), 25 July 1973 Jul Aug: 156.0 mm (6.1 in), 1 August 1958 Aug Sep: 134.9 mm (5.3 in), 18 September 1934 Sep Oct: 249.9 mm (9.8 in), 12 October 1950 Oct Nov: 170.4 mm (6.7 in), 24 November 1950 Nov Dec: 46.0 mm (1.8 in), 24 December 1971 Dec
The wettest day on record for each calendar month at San Ildelfonso Villa Alta. The most was 249.9 mm (9.8 in) on 12 October 1950.
Record daily precipitation for each month at San Ildelfonso Villa Alta
MonthRecord daily precipitation (mm)Date
Jan79.8 mm (3.1 in)24 January 1951
Feb31.5 mm (1.2 in)22 February 2009
Mar64.8 mm (2.6 in)15 March 1933
Apr54.9 mm (2.2 in)29 April 1954
May97.8 mm (3.9 in)21 May 1952
Jun213.4 mm (8.4 in)9 June 1978
Jul115.8 mm (4.6 in)25 July 1973
Aug156.0 mm (6.1 in)1 August 1958
Sep134.9 mm (5.3 in)18 September 1934
Oct249.9 mm (9.8 in)12 October 1950
Nov170.4 mm (6.7 in)24 November 1950
Dec46.0 mm (1.8 in)24 December 1971

Period of Record Coverage

1930 to 2009
Days with data per year at San Ildelfonso Villa Alta 55 years of record at San Ildelfonso Villa Alta, 1930 to 2009. 8 years have data for under 90 percent of days and are left out of rankings: 1930, 1936, 1938, 1950, 1974, 1994, 2007, 2008. 1930: 31 of 365 days1931: 364 of 365 days1932: 366 of 366 days1933: 364 of 365 days1934: 361 of 365 days1935: 362 of 365 days1936: 31 of 366 days1938: 91 of 365 days1939: 363 of 365 days1950: 220 of 365 days1951: 333 of 365 days1952: 365 of 366 days1953: 365 of 365 days1954: 362 of 365 days1955: 363 of 365 days1956: 363 of 366 days1957: 365 of 365 days1958: 364 of 365 days1959: 362 of 365 days1960: 334 of 366 days1961: 364 of 365 days1962: 363 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 364 of 365 days1966: 363 of 365 days1967: 364 of 365 days1968: 334 of 366 days1969: 362 of 365 days1970: 352 of 365 days1971: 364 of 365 days1972: 366 of 366 days1973: 362 of 365 days1974: 270 of 365 days1975: 365 of 365 days1976: 334 of 366 days1977: 364 of 365 days1978: 362 of 365 days1979: 332 of 365 days1980: 363 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 333 of 365 days1984: 334 of 366 days1993: 364 of 365 days1994: 31 of 365 days2001: 361 of 365 days2002: 333 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 333 of 365 days2006: 363 of 365 days2007: 181 of 365 days2008: 182 of 366 days2009: 334 of 365 days19301950196019701980
55 years of record at San Ildelfonso Villa Alta, 1930 to 2009. 8 years have data for under 90 percent of days and are left out of rankings: 1930, 1936, 1938, 1950, 1974, 1994, 2007, 2008.
Days with data per year at San Ildelfonso Villa Alta
YearDays with dataShare of yearComplete
1930318%No
1931364100%Yes
1932366100%Yes
1933364100%Yes
193436199%Yes
193536299%Yes
1936318%No
19389125%No
193936399%Yes
195022060%No
195133391%Yes
1952365100%Yes
1953365100%Yes
195436299%Yes
195536399%Yes
195636399%Yes
1957365100%Yes
1958364100%Yes
195936299%Yes
196033491%Yes
1961364100%Yes
196236399%Yes
1963365100%Yes
1964366100%Yes
1965364100%Yes
196636399%Yes
1967364100%Yes
196833491%Yes
196936299%Yes
197035296%Yes
1971364100%Yes
1972366100%Yes
197336299%Yes
197427074%No
1975365100%Yes
197633491%Yes
1977364100%Yes
197836299%Yes
197933291%Yes
198036399%Yes
1981364100%Yes
1982365100%Yes
198333391%Yes
198433491%Yes
1993364100%Yes
1994318%No
200136199%Yes
200233391%Yes
2003365100%Yes
2004366100%Yes
200533391%Yes
200636399%Yes
200718150%No
200818250%No
200933492%Yes

Latest Records

20
Latest records at San Ildelfonso Villa Alta
DateStationRecordValueBeat old record byOld record stoodSignificance
17 November 2009San Ildelfonso Villa Alta, MXdaily low max (Tie)15.6 C (60.1 F)tie4 years2 of 100 (Routine)
5 November 2009San Ildelfonso Villa Alta, MXdaily low max15.0 C (59.0 F)0.6 C (1.1 F)32 years18 of 100 (Routine)
4 November 2009San Ildelfonso Villa Alta, MXdaily low max (Tie)15.0 C (59.0 F)tie70 years7 of 100 (Routine)
13 October 2009San Ildelfonso Villa Alta, MXdaily low min (Tie)10.6 C (51.1 F)tie56 years6 of 100 (Routine)
12 October 2009San Ildelfonso Villa Alta, MXdaily low max15.6 C (60.1 F)2.7 C (4.9 F)76 years39 of 100 (Notable)
11 October 2009San Ildelfonso Villa Alta, MXdaily low max15.6 C (60.1 F)3.3 C (5.9 F)52 years33 of 100 (Routine)
4 October 2009San Ildelfonso Villa Alta, MXdaily low min (Tie)10.0 C (50.0 F)tie3 years2 of 100 (Routine)
3 October 2009San Ildelfonso Villa Alta, MXdaily low max15.0 C (59.0 F)2.8 C (5.0 F)46 years29 of 100 (Routine)
3 October 2009San Ildelfonso Villa Alta, MXdaily low min (Tie)10.6 C (51.1 F)tie52 years5 of 100 (Routine)
30 September 2009San Ildelfonso Villa Alta, MXdaily low min (Tie)10.0 C (50.0 F)tie16 years3 of 100 (Routine)
29 September 2009San Ildelfonso Villa Alta, MXdaily low max (Tie)17.8 C (64.0 F)tie42 years5 of 100 (Routine)
28 September 2009San Ildelfonso Villa Alta, MXdaily low min (Tie)10.6 C (51.1 F)tie6 years2 of 100 (Routine)
27 September 2009San Ildelfonso Villa Alta, MXdaily low max18.9 C (66.0 F)1.1 C (2.0 F)54 years27 of 100 (Routine)
26 September 2009San Ildelfonso Villa Alta, MXdaily low max15.6 C (60.1 F)2.2 C (4.0 F)34 years25 of 100 (Routine)
25 September 2009San Ildelfonso Villa Alta, MXdaily low max17.8 C (64.0 F)1.1 C (2.0 F)3 years11 of 100 (Routine)
23 September 2009San Ildelfonso Villa Alta, MXdaily low min (Tie)10.6 C (51.1 F)tie6 years2 of 100 (Routine)
21 September 2009San Ildelfonso Villa Alta, MXdaily low max15.6 C (60.1 F)3.3 C (5.9 F)6 years20 of 100 (Routine)
21 September 2009San Ildelfonso Villa Alta, MXdaily low min11.7 C (53.1 F)1.1 C (2.0 F)3 years14 of 100 (Routine)
20 September 2009San Ildelfonso Villa Alta, MXdaily low max18.9 C (66.0 F)1.1 C (2.0 F)52 years26 of 100 (Routine)
20 September 2009San Ildelfonso Villa Alta, MXdaily low min11.7 C (53.1 F)1.6 C (2.9 F)28 years25 of 100 (Routine)

Climate Trend

37 complete years, 1931 to 2006
Annual mean temperature at San Ildelfonso Villa Alta as warming stripes, 1931 to 2006 One stripe for each of 37 complete years at San Ildelfonso Villa Alta, 1931 to 2006. Blue stripes are years cooler than the station's own mean of 20.1 C (68.2 F); red stripes are warmer. The coolest year was 2006, at 17.7 C (63.9 F), and the warmest was 1973, at 21.3 C (70.3 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1931: 19.6 C, -0.5 C from the station mean1932: 20.2 C, +0.1 C from the station mean1933: 20.6 C, +0.5 C from the station mean1934: 19.7 C, -0.4 C from the station mean1935: 19.7 C, -0.5 C from the station mean1939: 19.8 C, -0.3 C from the station mean1952: 19.2 C, -1.0 C from the station mean1953: 19.9 C, -0.2 C from the station mean1954: 19.7 C, -0.4 C from the station mean1955: 20.6 C, +0.4 C from the station mean1956: 19.5 C, -0.6 C from the station mean1957: 20.6 C, +0.4 C from the station mean1958: 20.7 C, +0.5 C from the station mean1959: 20.3 C, +0.1 C from the station mean1961: 20.3 C, +0.1 C from the station mean1962: 20.6 C, +0.4 C from the station mean1963: 20.2 C, 0.0 C from the station mean1964: 20.5 C, +0.3 C from the station mean1965: 20.4 C, +0.3 C from the station mean1966: 20.0 C, -0.1 C from the station mean1967: 19.9 C, -0.2 C from the station mean1969: 20.5 C, +0.4 C from the station mean1970: 20.0 C, -0.1 C from the station mean1971: 20.7 C, +0.5 C from the station mean1972: 20.6 C, +0.5 C from the station mean1973: 21.3 C, +1.1 C from the station mean1975: 21.1 C, +0.9 C from the station mean1977: 20.7 C, +0.5 C from the station mean1978: 20.5 C, +0.4 C from the station mean1980: 20.6 C, +0.5 C from the station mean1981: 20.4 C, +0.3 C from the station mean1982: 20.9 C, +0.8 C from the station mean1993: 20.1 C, 0.0 C from the station mean2001: 20.1 C, -0.1 C from the station mean2003: 19.6 C, -0.5 C from the station mean2004: 18.1 C, -2.0 C from the station mean2006: 17.7 C, -2.4 C from the station mean19311940195019601970198019902000
One stripe for each of 37 complete years at San Ildelfonso Villa Alta, 1931 to 2006. Blue stripes are years cooler than the station's own mean of 20.1 C (68.2 F); red stripes are warmer. The coolest year was 2006, at 17.7 C (63.9 F), and the warmest was 1973, at 21.3 C (70.3 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at San Ildelfonso Villa Alta as warming stripes, 1931 to 2006
YearAnnual mean temperatureDifference from the station mean
193119.6 C-0.51 C
193220.2 C+0.12 C
193320.6 C+0.52 C
193419.7 C-0.40 C
193519.7 C-0.45 C
193919.8 C-0.28 C
195219.2 C-0.97 C
195319.9 C-0.20 C
195419.7 C-0.40 C
195520.6 C+0.43 C
195619.5 C-0.62 C
195720.6 C+0.45 C
195820.7 C+0.55 C
195920.3 C+0.15 C
196120.3 C+0.14 C
196220.6 C+0.44 C
196320.2 C+0.04 C
196420.5 C+0.33 C
196520.4 C+0.26 C
196620.0 C-0.13 C
196719.9 C-0.21 C
196920.5 C+0.39 C
197020.0 C-0.10 C
197120.7 C+0.55 C
197220.6 C+0.52 C
197321.3 C+1.14 C
197521.1 C+0.93 C
197720.7 C+0.53 C
197820.5 C+0.40 C
198020.6 C+0.51 C
198120.4 C+0.27 C
198220.9 C+0.79 C
199320.1 C-0.04 C
200120.1 C-0.06 C
200319.6 C-0.51 C
200418.1 C-2.00 C
200617.7 C-2.41 C

The fitted trend in annual mean temperature here over 1931 to 2006 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.1) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Ildelfonso Villa Alta
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.1 C (-0.2 to 0.1) per decade-0.1 F (-0.3 to 0.1) per decade1931 to 200637Not clearly different from zero
Mean daily maximum-0.01 C (-0.19 to 0.17) per decade-0.02 F (-0.34 to 0.31) per decade1931 to 200637Not clearly different from zero
Mean daily minimum-0.12 C (-0.22 to -0.03) per decade-0.22 F (-0.40 to -0.05) per decade1931 to 200637Fall

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

1930 to 2009
Yearly extremes at San Ildelfonso Villa Alta: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)197336.7 C (98.1 F)55
Coldest night (TNn)1.7 C (35.1 F)19605.6 C (42.1 F)55
Wettest day (Rx1day)249.9 mm (9.8 in)195076.3 mm (3.0 in)56
Wettest five days (Rx5day)520.4 mm (20.5 in)1950166.9 mm (6.6 in)56
Longest dry spell (CDD)104 days195135 days56

Hottest day (TXx)

Hottest day (TXx) at San Ildelfonso Villa Alta by year The hottest day of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 40.0 C (104.0 F) in 1973, marked on the chart; the median year is 36.7 C (98.1 F). 253035401940196019802000Record: 40.0 C (104.0 F) in 1973
The hottest day of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 40.0 C (104.0 F) in 1973, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at San Ildelfonso Villa Alta by year
YearHottest day (TXx)
193025.0 C (77.0 F)
193139.4 C (102.9 F)
193236.7 C (98.1 F)
193337.8 C (100.0 F)
193436.7 C (98.1 F)
193539.4 C (102.9 F)
193628.3 C (82.9 F)
193825.0 C (77.0 F)
193934.4 C (93.9 F)
195038.9 C (102.0 F)
195135.6 C (96.1 F)
195236.7 C (98.1 F)
195336.7 C (98.1 F)
195436.7 C (98.1 F)
195537.8 C (100.0 F)
195638.9 C (102.0 F)
195736.7 C (98.1 F)
195838.9 C (102.0 F)
195935.0 C (95.0 F)
196037.8 C (100.0 F)
196138.9 C (102.0 F)
196236.7 C (98.1 F)
196336.7 C (98.1 F)
196438.9 C (102.0 F)
196538.9 C (102.0 F)
196635.0 C (95.0 F)
196735.6 C (96.1 F)
196835.6 C (96.1 F)
196937.8 C (100.0 F)
197038.9 C (102.0 F)
197137.8 C (100.0 F)
197236.7 C (98.1 F)
197340.0 C (104.0 F)
197438.9 C (102.0 F)
197538.9 C (102.0 F)
197638.9 C (102.0 F)
197737.8 C (100.0 F)
197838.9 C (102.0 F)
197936.7 C (98.1 F)
198036.7 C (98.1 F)
198137.8 C (100.0 F)
198236.7 C (98.1 F)
198338.9 C (102.0 F)
198438.3 C (100.9 F)
1992n/a
199337.8 C (100.0 F)
199426.7 C (80.1 F)
200135.0 C (95.0 F)
200233.9 C (93.0 F)
200333.9 C (93.0 F)
200433.9 C (93.0 F)
200533.9 C (93.0 F)
200633.9 C (93.0 F)
200733.9 C (93.0 F)
200831.7 C (89.1 F)
200932.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Ildelfonso Villa Alta by year The coldest night of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 1.7 C (35.1 F) in 1960, marked on the chart; the median year is 5.6 C (42.1 F). 02.557.5101940196019802000Record: 1.7 C (35.1 F) in 1960
The coldest night of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 1.7 C (35.1 F) in 1960, marked on the chart; the median year is 5.6 C (42.1 F).
Coldest night (TNn) at San Ildelfonso Villa Alta by year
YearColdest night (TNn)
19308.3 C (46.9 F)
19317.2 C (45.0 F)
19326.1 C (43.0 F)
19334.4 C (39.9 F)
19345.0 C (41.0 F)
19353.9 C (39.0 F)
19367.8 C (46.0 F)
193810.0 C (50.0 F)
19396.7 C (44.1 F)
19503.9 C (39.0 F)
19515.6 C (42.1 F)
19526.7 C (44.1 F)
19535.6 C (42.1 F)
19545.0 C (41.0 F)
19555.6 C (42.1 F)
19563.9 C (39.0 F)
19573.9 C (39.0 F)
19583.9 C (39.0 F)
19597.8 C (46.0 F)
19601.7 C (35.1 F)
19615.0 C (41.0 F)
19625.0 C (41.0 F)
19633.9 C (39.0 F)
19645.6 C (42.1 F)
19656.7 C (44.1 F)
19664.4 C (39.9 F)
19675.6 C (42.1 F)
19685.0 C (41.0 F)
19695.6 C (42.1 F)
19705.6 C (42.1 F)
19717.2 C (45.0 F)
19721.7 C (35.1 F)
19735.0 C (41.0 F)
19747.8 C (46.0 F)
19755.6 C (42.1 F)
19763.9 C (39.0 F)
19776.7 C (44.1 F)
19786.1 C (43.0 F)
19793.9 C (39.0 F)
19806.7 C (44.1 F)
19816.7 C (44.1 F)
19826.7 C (44.1 F)
19835.6 C (42.1 F)
19846.7 C (44.1 F)
1992n/a
19936.7 C (44.1 F)
199410.0 C (50.0 F)
20017.8 C (46.0 F)
20025.6 C (42.1 F)
20038.9 C (48.0 F)
20046.7 C (44.1 F)
20058.9 C (48.0 F)
20065.6 C (42.1 F)
20078.9 C (48.0 F)
20087.8 C (46.0 F)
20095.6 C (42.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Ildelfonso Villa Alta by year The wettest day of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 249.9 mm (9.8 in) in 1950, marked on the chart; the median year is 76.3 mm (3.0 in). 01002003001940196019802000Record: 249.9 mm (9.8 in) in 1950
The wettest day of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 249.9 mm (9.8 in) in 1950, marked on the chart; the median year is 76.3 mm (3.0 in).
Wettest day (Rx1day) at San Ildelfonso Villa Alta by year
YearWettest day (Rx1day)
19301.8 mm (0.07 in)
1931132.8 mm (5.2 in)
1932205.0 mm (8.1 in)
1933121.9 mm (4.8 in)
1934134.9 mm (5.3 in)
193568.6 mm (2.7 in)
19360.5 mm (0.02 in)
193821.3 mm (0.8 in)
1939118.1 mm (4.6 in)
1950249.9 mm (9.8 in)
195179.8 mm (3.1 in)
1952140.0 mm (5.5 in)
1953108.0 mm (4.3 in)
195472.9 mm (2.9 in)
195590.9 mm (3.6 in)
195664.8 mm (2.6 in)
195781.8 mm (3.2 in)
1958156.0 mm (6.1 in)
195965.3 mm (2.6 in)
196095.8 mm (3.8 in)
196179.8 mm (3.1 in)
196255.1 mm (2.2 in)
196359.9 mm (2.4 in)
196481.8 mm (3.2 in)
196554.9 mm (2.2 in)
1966110.0 mm (4.3 in)
1967111.0 mm (4.4 in)
196889.9 mm (3.5 in)
196972.4 mm (2.9 in)
197062.7 mm (2.5 in)
197163.8 mm (2.5 in)
197282.6 mm (3.3 in)
1973145.8 mm (5.7 in)
197456.9 mm (2.2 in)
197583.3 mm (3.3 in)
197649.3 mm (1.9 in)
197739.9 mm (1.6 in)
1978213.4 mm (8.4 in)
197978.2 mm (3.1 in)
198087.9 mm (3.5 in)
198174.4 mm (2.9 in)
198257.7 mm (2.3 in)
198395.0 mm (3.7 in)
198459.9 mm (2.4 in)
19920.8 mm (0.03 in)
199391.9 mm (3.6 in)
199414.7 mm (0.6 in)
200180.8 mm (3.2 in)
200254.9 mm (2.2 in)
200356.4 mm (2.2 in)
200445.5 mm (1.8 in)
2005105.4 mm (4.1 in)
200648.3 mm (1.9 in)
200719.8 mm (0.8 in)
200817.3 mm (0.7 in)
200951.3 mm (2.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Ildelfonso Villa Alta by year The wettest five days of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 520.4 mm (20.5 in) in 1950, marked on the chart; the median year is 166.9 mm (6.6 in). 02004006001940196019802000Record: 520.4 mm (20.5 in) in 1950
The wettest five days of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 520.4 mm (20.5 in) in 1950, marked on the chart; the median year is 166.9 mm (6.6 in).
Wettest five days (Rx5day) at San Ildelfonso Villa Alta by year
YearWettest five days (Rx5day)
19303.9 mm (0.15 in)
1931288.5 mm (11.4 in)
1932383.9 mm (15.1 in)
1933203.0 mm (8.0 in)
1934158.0 mm (6.2 in)
1935208.5 mm (8.2 in)
19360.5 mm (0.02 in)
193857.1 mm (2.2 in)
1939249.7 mm (9.8 in)
1950520.4 mm (20.5 in)
1951208.5 mm (8.2 in)
1952242.3 mm (9.5 in)
1953190.3 mm (7.5 in)
1954169.5 mm (6.7 in)
1955222.0 mm (8.7 in)
1956150.8 mm (5.9 in)
1957115.7 mm (4.6 in)
1958228.4 mm (9.0 in)
1959125.2 mm (4.9 in)
1960199.4 mm (7.9 in)
1961194.5 mm (7.7 in)
1962147.1 mm (5.8 in)
1963167.8 mm (6.6 in)
1964144.4 mm (5.7 in)
1965204.5 mm (8.1 in)
1966193.3 mm (7.6 in)
1967177.8 mm (7.0 in)
1968197.7 mm (7.8 in)
1969217.0 mm (8.5 in)
1970130.3 mm (5.1 in)
1971128.5 mm (5.1 in)
1972164.1 mm (6.5 in)
1973209.9 mm (8.3 in)
1974118.7 mm (4.7 in)
1975298.8 mm (11.8 in)
1976127.1 mm (5.0 in)
197787.1 mm (3.4 in)
1978277.4 mm (10.9 in)
1979178.1 mm (7.0 in)
1980190.8 mm (7.5 in)
1981156.1 mm (6.1 in)
1982101.1 mm (4.0 in)
1983275.1 mm (10.8 in)
1984102.6 mm (4.0 in)
19920.8 mm (0.03 in)
1993272.1 mm (10.7 in)
199415.5 mm (0.6 in)
2001149.4 mm (5.9 in)
2002126.9 mm (5.0 in)
200393.7 mm (3.7 in)
2004171.5 mm (6.8 in)
2005166.0 mm (6.5 in)
2006114.8 mm (4.5 in)
200730.0 mm (1.2 in)
200831.3 mm (1.2 in)
2009113.3 mm (4.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Ildelfonso Villa Alta by year The longest dry spell of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 104 days in 1951, marked on the chart; the median year is 35 days. 02550751001251940196019802000Record: 104 days in 1951
The longest dry spell of the year at San Ildelfonso Villa Alta, 1930 to 2009. The record is 104 days in 1951, marked on the chart; the median year is 35 days.
Longest dry spell (CDD) at San Ildelfonso Villa Alta by year
YearLongest dry spell (CDD)
193026 days
193133 days
193233 days
193334 days
193468 days
193529 days
193631 days
193817 days
193915 days
195043 days
1951104 days
195283 days
195341 days
195443 days
195545 days
195648 days
195724 days
195830 days
195922 days
196047 days
196162 days
196245 days
196323 days
196434 days
196535 days
196635 days
196727 days
196814 days
196931 days
197042 days
197137 days
197235 days
197348 days
197437 days
197546 days
197622 days
197742 days
197834 days
197934 days
198032 days
198137 days
198241 days
198313 days
198453 days
199231 days
199326 days
199410 days
200136 days
200265 days
200332 days
200445 days
200595 days
200627 days
200732 days
200899 days
200951 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

46 years, 1931 to 2009

A day with at least 79.1 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 241.0 mm (9.5 in) of rain is expected about once in 100 years.

Rainfall return levels at San Ildelfonso Villa Alta: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years79.1 mm (3.1 in)
5 years111.7 mm (4.4 in)
10 years137.0 mm (5.4 in)
25 years174.0 mm (6.9 in)
50 years205.6 mm (8.1 in)Longer than the 46 years of record
100 years241.0 mm (9.5 in)Longer than the 46 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, 46 years of values from 1931 to 2009.

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: 213.4 mm (8.4 in) in 1978; 205.0 mm (8.1 in) in 1932; 156.0 mm (6.1 in) in 1958.

Download the Data

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