Built 2026-10-19 (19 October 2026)

Santiago del Monte Weather Records (MXN00015160)

Record envelope, standing records and threshold days for Santiago del Monte (MXN00015160), Mexico, with 41 years of record.

Key Facts for Santiago del Monte

  • Santiago del Monte (MXN00015160) is a weather station in Mexico at 19.40 latitude and -99.93 longitude, 2,770 m (9,087 ft) above sea level.
  • The station reports from 1969 to 2009, 41 years of record.
  • 1,464 records set at Santiago del Monte still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Santiago del Monte set a daily record low maximum temperature of 13.9 C (57.0 F) on 22 December 2009.

About the Station

  • Location: Mexico, 19.40 latitude, -99.93 longitude.
  • Elevation: 2,770 m (9,087 ft).
  • Period of record: 1969 to 2009, 41 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 Santiago del Monte, with 2026 drawn through them The band shows the record high and record low for each calendar day at Santiago del Monte. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -100102030 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Santiago del Monte. 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 Santiago del Monte, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.6 C (78.1 F)-6.7 C (19.9 F)n/an/a
Feb25.0 C (77.0 F)-5.0 C (23.0 F)n/an/a
Mar28.9 C (84.0 F)-3.9 C (25.0 F)n/an/a
Apr29.4 C (84.9 F)-1.1 C (30.0 F)n/an/a
May29.4 C (84.9 F)1.7 C (35.1 F)n/an/a
Jun28.3 C (82.9 F)1.7 C (35.1 F)n/an/a
Jul23.9 C (75.0 F)3.9 C (39.0 F)n/an/a
Aug27.2 C (81.0 F)0.0 C (32.0 F)n/an/a
Sep22.8 C (73.0 F)-5.0 C (23.0 F)n/an/a
Oct25.0 C (77.0 F)-3.3 C (26.1 F)n/an/a
Nov23.3 C (73.9 F)-4.4 C (24.1 F)n/an/a
Dec24.4 C (75.9 F)-5.0 C (23.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Santiago del Monte by the year they were set 1,464 records at Santiago del Monte still stand. 1998 holds the most, with 87. 02550751001972: 181973: 731974: 461975: 471976: 561977: 391978: 331979: 551980: 491981: 401982: 501983: 561984: 191985: 161986: 321987: 401988: 341989: 291990: 331991: 161992: 371993: 221994: 261995: 331996: 251997: 521998: 871999: 562000: 192001: 672002: 662003: 282004: 492005: 282006: 142007: 222008: 302009: 221972197619801984198819921996200020042008
1,464 records at Santiago del Monte still stand. 1998 holds the most, with 87.
Standing records at Santiago del Monte by the year they were set
Year setStanding records
197218
197373
197446
197547
197656
197739
197833
197955
198049
198140
198250
198356
198419
198516
198632
198740
198834
198929
199033
199116
199237
199322
199426
199533
199625
199752
199887
199956
200019
200167
200266
200328
200449
200528
200614
200722
200830
200922

Wettest Day of Each Month

Jan: 66.8 mm (2.6 in)
Record daily precipitation for each month at Santiago del Monte The wettest day on record for each calendar month at Santiago del Monte. The most was 66.8 mm (2.6 in) on 24 January 1980. 020406080 Jan: 66.8 mm (2.6 in), 24 January 1980 Jan Feb: 36.3 mm (1.4 in), 2 February 1992 Feb Mar: 50.0 mm (2.0 in), 4 March 1988 Mar Apr: 64.3 mm (2.5 in), 24 April 2001 Apr May: 36.3 mm (1.4 in), 23 May 1975 May Jun: 54.4 mm (2.1 in), 22 June 1995 Jun Jul: 53.8 mm (2.1 in), 7 July 1973 Jul Aug: 56.6 mm (2.2 in), 6 August 1991 Aug Sep: 55.9 mm (2.2 in), 1 September 1969 Sep Oct: 50.8 mm (2.0 in), 26 October 1981 Oct Nov: 38.9 mm (1.5 in), 1 November 1980 Nov Dec: 29.7 mm (1.2 in), 30 December 1995 Dec
The wettest day on record for each calendar month at Santiago del Monte. The most was 66.8 mm (2.6 in) on 24 January 1980.
Record daily precipitation for each month at Santiago del Monte
MonthRecord daily precipitation (mm)Date
Jan66.8 mm (2.6 in)24 January 1980
Feb36.3 mm (1.4 in)2 February 1992
Mar50.0 mm (2.0 in)4 March 1988
Apr64.3 mm (2.5 in)24 April 2001
May36.3 mm (1.4 in)23 May 1975
Jun54.4 mm (2.1 in)22 June 1995
Jul53.8 mm (2.1 in)7 July 1973
Aug56.6 mm (2.2 in)6 August 1991
Sep55.9 mm (2.2 in)1 September 1969
Oct50.8 mm (2.0 in)26 October 1981
Nov38.9 mm (1.5 in)1 November 1980
Dec29.7 mm (1.2 in)30 December 1995

Period of Record Coverage

1972 to 2009
Days with data per year at Santiago del Monte 38 years of record at Santiago del Monte, 1972 to 2009. 6 years have data for under 90 percent of days and are left out of rankings: 1972, 1978, 1987, 1989, 1992, 2006. 1972: 44 of 366 days1973: 364 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 303 of 365 days1979: 365 of 365 days1980: 365 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 365 of 365 days1984: 335 of 366 days1985: 334 of 365 days1986: 335 of 365 days1987: 275 of 365 days1988: 366 of 366 days1989: 273 of 365 days1990: 334 of 365 days1991: 334 of 365 days1992: 305 of 366 days1993: 330 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 365 of 366 days1997: 364 of 365 days1998: 364 of 365 days1999: 364 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 363 of 365 days2003: 364 of 365 days2004: 366 of 366 days2005: 363 of 365 days2006: 271 of 365 days2007: 363 of 365 days2008: 365 of 366 days2009: 361 of 365 days1975198019851990199520002005
38 years of record at Santiago del Monte, 1972 to 2009. 6 years have data for under 90 percent of days and are left out of rankings: 1972, 1978, 1987, 1989, 1992, 2006.
Days with data per year at Santiago del Monte
YearDays with dataShare of yearComplete
19724412%No
1973364100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
197830383%No
1979365100%Yes
1980365100%Yes
1981365100%Yes
1982364100%Yes
1983365100%Yes
198433592%Yes
198533492%Yes
198633592%Yes
198727575%No
1988366100%Yes
198927375%No
199033492%Yes
199133492%Yes
199230583%No
199333090%Yes
1994365100%Yes
1995365100%Yes
1996365100%Yes
1997364100%Yes
1998364100%Yes
1999364100%Yes
2000365100%Yes
2001365100%Yes
200236399%Yes
2003364100%Yes
2004366100%Yes
200536399%Yes
200627174%No
200736399%Yes
2008365100%Yes
200936199%Yes

Latest Records

20
Latest records at Santiago del Monte
DateStationRecordValueBeat old record byOld record stoodSignificance
22 December 2009Santiago del Monte, MXdaily low max13.9 C (57.0 F)1.1 C (2.0 F)32 years17 of 100 (Routine)
11 December 2009Santiago del Monte, MXdaily high max (Tie)20.0 C (68.0 F)tie27 years2 of 100 (Routine)
6 December 2009Santiago del Monte, MXdaily high min (Tie)6.7 C (44.1 F)tie8 years1 of 100 (Routine)
4 December 2009Santiago del Monte, MXdaily low max (Tie)15.0 C (59.0 F)tie10 years1 of 100 (Routine)
3 December 2009Santiago del Monte, MXdaily low max (Tie)13.9 C (57.0 F)tie10 years1 of 100 (Routine)
24 November 2009Santiago del Monte, MXdaily low min (Tie)-1.1 C (30.0 F)tie28 years2 of 100 (Routine)
6 November 2009Santiago del Monte, MXdaily low max15.0 C (59.0 F)1.1 C (2.0 F)28 years17 of 100 (Routine)
30 October 2009Santiago del Monte, MXdaily high min10.6 C (51.1 F)2.3 C (4.1 F)31 years21 of 100 (Routine)
30 October 2009Santiago del Monte, MXdaily low max13.9 C (57.0 F)0.5 C (0.9 F)30 years14 of 100 (Routine)
29 October 2009Santiago del Monte, MXdaily high min9.4 C (48.9 F)0.5 C (0.9 F)16 years8 of 100 (Routine)
28 October 2009Santiago del Monte, MXdaily low max13.3 C (55.9 F)2.3 C (4.1 F)16 years19 of 100 (Routine)
28 October 2009Santiago del Monte, MXdaily high min (Tie)10.0 C (50.0 F)tie6 years1 of 100 (Routine)
25 October 2009Santiago del Monte, MXdaily rain38.4 mm (1.5 in)3.3 mm (0.13 in)19 years13 of 100 (Routine)
15 October 2009Santiago del Monte, MXdaily high min (Tie)10.0 C (50.0 F)tie15 years1 of 100 (Routine)
13 October 2009Santiago del Monte, MXdaily high min (Tie)10.0 C (50.0 F)tie36 years3 of 100 (Routine)
7 October 2009Santiago del Monte, MXdaily high max22.8 C (73.0 F)1.1 C (2.0 F)32 years17 of 100 (Routine)
6 October 2009Santiago del Monte, MXdaily high max22.2 C (72.0 F)0.5 C (0.9 F)12 years8 of 100 (Routine)
5 October 2009Santiago del Monte, MXdaily high max (Tie)22.2 C (72.0 F)tie14 years1 of 100 (Routine)
4 October 2009Santiago del Monte, MXdaily high max (Tie)21.7 C (71.1 F)tie32 years3 of 100 (Routine)
3 October 2009Santiago del Monte, MXdaily high max22.2 C (72.0 F)0.5 C (0.9 F)4 years6 of 100 (Routine)

Climate Trend

26 complete years, 1973 to 2009
Annual mean temperature at Santiago del Monte as warming stripes, 1973 to 2009 One stripe for each of 26 complete years at Santiago del Monte, 1973 to 2009. Blue stripes are years cooler than the station's own mean of 12.5 C (54.6 F); red stripes are warmer. The coolest year was 2001, at 11.8 C (53.3 F), and the warmest was 1973, at 13.0 C (55.3 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1973: 13.0 C, +0.4 C from the station mean1974: 12.5 C, 0.0 C from the station mean1975: 12.4 C, -0.1 C from the station mean1976: 12.5 C, 0.0 C from the station mean1977: 12.7 C, +0.2 C from the station mean1979: 12.6 C, 0.0 C from the station mean1980: 12.7 C, +0.2 C from the station mean1981: 12.5 C, 0.0 C from the station mean1982: 12.9 C, +0.3 C from the station mean1983: 12.3 C, -0.2 C from the station mean1988: 12.7 C, +0.1 C from the station mean1994: 12.5 C, 0.0 C from the station mean1995: 12.7 C, +0.2 C from the station mean1996: 12.1 C, -0.5 C from the station mean1997: 12.3 C, -0.2 C from the station mean1998: 12.9 C, +0.3 C from the station mean1999: 12.0 C, -0.6 C from the station mean2000: 12.4 C, -0.2 C from the station mean2001: 11.8 C, -0.7 C from the station mean2002: 12.7 C, +0.2 C from the station mean2003: 12.9 C, +0.3 C from the station mean2004: 12.8 C, +0.3 C from the station mean2005: 12.8 C, +0.3 C from the station mean2007: 12.5 C, 0.0 C from the station mean2008: 12.1 C, -0.4 C from the station mean2009: 12.6 C, +0.1 C from the station mean1973198019851990199520002005
One stripe for each of 26 complete years at Santiago del Monte, 1973 to 2009. Blue stripes are years cooler than the station's own mean of 12.5 C (54.6 F); red stripes are warmer. The coolest year was 2001, at 11.8 C (53.3 F), and the warmest was 1973, at 13.0 C (55.3 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Santiago del Monte as warming stripes, 1973 to 2009
YearAnnual mean temperatureDifference from the station mean
197313.0 C+0.42 C
197412.5 C-0.02 C
197512.4 C-0.12 C
197612.5 C-0.01 C
197712.7 C+0.17 C
197912.6 C+0.05 C
198012.7 C+0.16 C
198112.5 C-0.01 C
198212.9 C+0.32 C
198312.3 C-0.21 C
198812.7 C+0.13 C
199412.5 C-0.01 C
199512.7 C+0.16 C
199612.1 C-0.45 C
199712.3 C-0.20 C
199812.9 C+0.32 C
199912.0 C-0.57 C
200012.4 C-0.17 C
200111.8 C-0.72 C
200212.7 C+0.17 C
200312.9 C+0.35 C
200412.8 C+0.31 C
200512.8 C+0.30 C
200712.5 C-0.02 C
200812.1 C-0.39 C
200912.6 C+0.07 C

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

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1969 to 2009
Yearly extremes at Santiago del Monte: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)29.4 C (84.9 F)197826.1 C (79.0 F)38
Coldest night (TNn)-6.7 C (19.9 F)1997-3.9 C (25.0 F)38
Wettest day (Rx1day)66.8 mm (2.6 in)198040.9 mm (1.6 in)41
Wettest five days (Rx5day)190.7 mm (7.5 in)198081.8 mm (3.2 in)41
Longest dry spell (CDD)119 days199354 days41

Hottest day (TXx)

Hottest day (TXx) at Santiago del Monte by year The hottest day of the year at Santiago del Monte, 1969 to 2009. The record is 29.4 C (84.9 F) in 1978, marked on the chart; the median year is 26.1 C (79.0 F). 22242628301970198019902000Record: 29.4 C (84.9 F) in 1978
The hottest day of the year at Santiago del Monte, 1969 to 2009. The record is 29.4 C (84.9 F) in 1978, marked on the chart; the median year is 26.1 C (79.0 F).
Hottest day (TXx) at Santiago del Monte by year
YearHottest day (TXx)
1969n/a
1970n/a
1971n/a
197222.2 C (72.0 F)
197328.3 C (82.9 F)
197426.7 C (80.1 F)
197527.2 C (81.0 F)
197625.6 C (78.1 F)
197728.9 C (84.0 F)
197829.4 C (84.9 F)
197925.6 C (78.1 F)
198025.6 C (78.1 F)
198125.6 C (78.1 F)
198227.2 C (81.0 F)
198329.4 C (84.9 F)
198426.1 C (79.0 F)
198526.1 C (79.0 F)
198625.6 C (78.1 F)
198725.0 C (77.0 F)
198828.3 C (82.9 F)
198927.2 C (81.0 F)
199026.7 C (80.1 F)
199127.2 C (81.0 F)
199223.9 C (75.0 F)
199327.2 C (81.0 F)
199426.1 C (79.0 F)
199526.1 C (79.0 F)
199626.1 C (79.0 F)
199725.0 C (77.0 F)
199829.4 C (84.9 F)
199926.7 C (80.1 F)
200026.1 C (79.0 F)
200125.0 C (77.0 F)
200228.3 C (82.9 F)
200329.4 C (84.9 F)
200425.0 C (77.0 F)
200528.9 C (84.0 F)
200626.7 C (80.1 F)
200725.0 C (77.0 F)
200825.6 C (78.1 F)
200926.1 C (79.0 F)

Coldest night (TNn)

Coldest night (TNn) at Santiago del Monte by year The coldest night of the year at Santiago del Monte, 1969 to 2009. The record is -6.7 C (19.9 F) in 1997, marked on the chart; the median year is -3.9 C (25.0 F). -8-6-4-201970198019902000Record: -6.7 C (19.9 F) in 1997
The coldest night of the year at Santiago del Monte, 1969 to 2009. The record is -6.7 C (19.9 F) in 1997, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Santiago del Monte by year
YearColdest night (TNn)
1969n/a
1970n/a
1971n/a
1972-3.3 C (26.1 F)
1973-5.0 C (23.0 F)
1974-3.3 C (26.1 F)
1975-5.0 C (23.0 F)
1976-5.0 C (23.0 F)
1977-1.7 C (28.9 F)
1978-3.3 C (26.1 F)
1979-5.0 C (23.0 F)
1980-3.3 C (26.1 F)
1981-3.9 C (25.0 F)
1982-5.0 C (23.0 F)
1983-5.0 C (23.0 F)
1984-1.7 C (28.9 F)
1985-1.1 C (30.0 F)
1986-4.4 C (24.1 F)
1987-1.1 C (30.0 F)
1988-5.0 C (23.0 F)
1989-3.9 C (25.0 F)
1990-4.4 C (24.1 F)
1991-2.8 C (27.0 F)
1992-4.4 C (24.1 F)
1993-2.2 C (28.0 F)
1994-3.3 C (26.1 F)
1995-3.9 C (25.0 F)
1996-5.0 C (23.0 F)
1997-6.7 C (19.9 F)
1998-4.4 C (24.1 F)
1999-4.4 C (24.1 F)
2000-4.4 C (24.1 F)
2001-3.3 C (26.1 F)
2002-3.3 C (26.1 F)
2003-3.3 C (26.1 F)
2004-5.0 C (23.0 F)
2005-2.2 C (28.0 F)
2006-5.0 C (23.0 F)
2007-1.7 C (28.9 F)
2008-2.8 C (27.0 F)
2009-2.8 C (27.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Santiago del Monte by year The wettest day of the year at Santiago del Monte, 1969 to 2009. The record is 66.8 mm (2.6 in) in 1980, marked on the chart; the median year is 40.9 mm (1.6 in). 2030405060701970198019902000Record: 66.8 mm (2.6 in) in 1980
The wettest day of the year at Santiago del Monte, 1969 to 2009. The record is 66.8 mm (2.6 in) in 1980, marked on the chart; the median year is 40.9 mm (1.6 in).
Wettest day (Rx1day) at Santiago del Monte by year
YearWettest day (Rx1day)
196955.9 mm (2.2 in)
197038.9 mm (1.5 in)
197138.9 mm (1.5 in)
197232.0 mm (1.3 in)
197353.8 mm (2.1 in)
197436.3 mm (1.4 in)
197542.4 mm (1.7 in)
197641.9 mm (1.6 in)
197739.9 mm (1.6 in)
197827.2 mm (1.1 in)
197932.5 mm (1.3 in)
198066.8 mm (2.6 in)
198150.8 mm (2.0 in)
198242.4 mm (1.7 in)
198328.7 mm (1.1 in)
198447.0 mm (1.9 in)
198542.7 mm (1.7 in)
198636.6 mm (1.4 in)
198753.3 mm (2.1 in)
198850.0 mm (2.0 in)
198935.1 mm (1.4 in)
199035.1 mm (1.4 in)
199156.6 mm (2.2 in)
199242.7 mm (1.7 in)
199342.2 mm (1.7 in)
199432.3 mm (1.3 in)
199554.4 mm (2.1 in)
199637.6 mm (1.5 in)
199740.9 mm (1.6 in)
199844.7 mm (1.8 in)
199934.3 mm (1.4 in)
200040.6 mm (1.6 in)
200164.3 mm (2.5 in)
200238.4 mm (1.5 in)
200346.0 mm (1.8 in)
200443.4 mm (1.7 in)
200537.6 mm (1.5 in)
200638.6 mm (1.5 in)
200733.3 mm (1.3 in)
200840.1 mm (1.6 in)
200953.8 mm (2.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Santiago del Monte by year The wettest five days of the year at Santiago del Monte, 1969 to 2009. The record is 190.7 mm (7.5 in) in 1980, marked on the chart; the median year is 81.8 mm (3.2 in). 501001502001970198019902000Record: 190.7 mm (7.5 in) in 1980
The wettest five days of the year at Santiago del Monte, 1969 to 2009. The record is 190.7 mm (7.5 in) in 1980, marked on the chart; the median year is 81.8 mm (3.2 in).
Wettest five days (Rx5day) at Santiago del Monte by year
YearWettest five days (Rx5day)
1969104.7 mm (4.1 in)
197076.2 mm (3.0 in)
1971128.6 mm (5.1 in)
197263.4 mm (2.5 in)
197390.9 mm (3.6 in)
197465.3 mm (2.6 in)
197570.4 mm (2.8 in)
197669.2 mm (2.7 in)
197762.0 mm (2.4 in)
197871.2 mm (2.8 in)
197961.5 mm (2.4 in)
1980190.7 mm (7.5 in)
198184.6 mm (3.3 in)
198275.0 mm (3.0 in)
198381.8 mm (3.2 in)
1984108.0 mm (4.3 in)
1985102.5 mm (4.0 in)
198665.0 mm (2.6 in)
198781.8 mm (3.2 in)
198893.3 mm (3.7 in)
198968.3 mm (2.7 in)
199062.8 mm (2.5 in)
199193.0 mm (3.7 in)
1992116.3 mm (4.6 in)
199370.9 mm (2.8 in)
199475.0 mm (3.0 in)
1995105.7 mm (4.2 in)
199678.5 mm (3.1 in)
199774.5 mm (2.9 in)
1998107.9 mm (4.2 in)
199990.2 mm (3.6 in)
200098.0 mm (3.9 in)
2001111.2 mm (4.4 in)
2002100.1 mm (3.9 in)
200389.0 mm (3.5 in)
200489.7 mm (3.5 in)
200564.0 mm (2.5 in)
200680.0 mm (3.1 in)
200774.7 mm (2.9 in)
200886.3 mm (3.4 in)
2009100.5 mm (4.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Santiago del Monte by year The longest dry spell of the year at Santiago del Monte, 1969 to 2009. The record is 119 days in 1993, marked on the chart; the median year is 54 days. 02550751001251970198019902000Record: 119 days in 1993
The longest dry spell of the year at Santiago del Monte, 1969 to 2009. The record is 119 days in 1993, marked on the chart; the median year is 54 days.
Longest dry spell (CDD) at Santiago del Monte by year
YearLongest dry spell (CDD)
196938 days
197078 days
197127 days
197266 days
197357 days
197430 days
197589 days
197660 days
197732 days
197827 days
197936 days
198068 days
198141 days
198243 days
198370 days
198449 days
198557 days
198644 days
198741 days
198883 days
198957 days
199034 days
199154 days
199222 days
1993119 days
199474 days
199538 days
1996112 days
199764 days
1998108 days
199947 days
200055 days
200146 days
200243 days
200376 days
200440 days
200539 days
200667 days
200758 days
200873 days
200935 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.

Frost Dates and Growing Season

26 years with a frost

Across 26 years with a frost, the median last spring frost at Santiago del Monte falls on 5 March and the median first autumn frost on 13 November, which leaves a median of 253 days between them.

Fitted over all years, the growing season changes by -1.5 days per decade at this station.

Frost dates and growing season at Santiago del Monte
MeasureMedian, all yearsEarliest periodRecent period (1973 to 2009)Recent against earliestFitted trend
Last spring frost5 Marchn/a5 Marchn/a+3.0 days per decade
First autumn frost13 Novembern/a13 Novembern/a+1.5 days per decade
Growing days253 daysn/a253 daysn/a-1.5 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

36 years, 1970 to 2009

A day with at least 40.7 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 72.4 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Santiago del Monte: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years40.7 mm (1.6 in)
5 years49.1 mm (1.9 in)
10 years54.6 mm (2.1 in)
25 years61.7 mm (2.4 in)
50 years67.0 mm (2.6 in)Longer than the 36 years of record
100 years72.4 mm (2.9 in)Longer than the 36 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, 36 years of values from 1970 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: 66.8 mm (2.6 in) in 1980; 64.3 mm (2.5 in) in 2001; 56.6 mm (2.2 in) in 1991.

Download the Data

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