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San Jeronimito Weather Records (MXN00012121)

Record envelope, standing records and threshold days for San Jeronimito (MXN00012121), Mexico, with 47 years of record.

Key Facts for San Jeronimito

  • San Jeronimito (MXN00012121) is a weather station in Mexico at 17.55 latitude and -101.33 longitude, 20 m (65 ft) above sea level.
  • The station reports from 1961 to 2007, 47 years of record.
  • 1,464 records set at San Jeronimito still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Jeronimito set a daily record low maximum temperature of 27.8 C (82.0 F) on 5 December 2007.

About the Station

  • Location: Mexico, 17.55 latitude, -101.33 longitude.
  • Elevation: 20 m (65 ft).
  • Period of record: 1961 to 2007, 47 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 Jeronimito, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Jeronimito. 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 Jeronimito. 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 Jeronimito, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.6 C (96.1 F)8.9 C (48.0 F)n/an/a
Feb35.6 C (96.1 F)10.6 C (51.1 F)n/an/a
Mar36.7 C (98.1 F)10.0 C (50.0 F)n/an/a
Apr38.3 C (100.9 F)9.4 C (48.9 F)n/an/a
May37.8 C (100.0 F)10.6 C (51.1 F)n/an/a
Jun37.8 C (100.0 F)15.0 C (59.0 F)n/an/a
Jul38.9 C (102.0 F)15.6 C (60.1 F)n/an/a
Aug39.4 C (102.9 F)15.6 C (60.1 F)n/an/a
Sep36.7 C (98.1 F)15.0 C (59.0 F)n/an/a
Oct36.7 C (98.1 F)15.0 C (59.0 F)n/an/a
Nov37.8 C (100.0 F)11.7 C (53.1 F)n/an/a
Dec35.6 C (96.1 F)8.3 C (46.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Jeronimito by the year they were set 1,464 records at San Jeronimito still stand. 1963 holds the most, with 158. 0501001502001961: 541962: 1121963: 1581964: 1151965: 171966: 191967: 201968: 261969: 611970: 261971: 271972: 191973: 281974: 401975: 271976: 271977: 111978: 261979: 271980: 291981: 251982: 81983: 131984: 211985: 131986: 141987: 91988: 211989: 91990: 71991: 241992: 231993: 241994: 21995: 231996: 291997: 471998: 281999: 452000: 152001: 312002: 232003: 62004: 352005: 282006: 402007: 321961196619711976198119861991199620012006
1,464 records at San Jeronimito still stand. 1963 holds the most, with 158.
Standing records at San Jeronimito by the year they were set
Year setStanding records
196154
1962112
1963158
1964115
196517
196619
196720
196826
196961
197026
197127
197219
197328
197440
197527
197627
197711
197826
197927
198029
198125
19828
198313
198421
198513
198614
19879
198821
19899
19907
199124
199223
199324
19942
199523
199629
199747
199828
199945
200015
200131
200223
20036
200435
200528
200640
200732

All-Time Record Progression

3 new records
When San Jeronimito set new all-time records 3 all-time records were set at San Jeronimito between 13 January 1997 and 17 July 2007. Each dot is a new record. Record low minimum temperatureRecord daily precipitation13 January 1997: Record low minimum temperature 8.9 C (48.0 F)5 December 1999: Record low minimum temperature 8.3 C (46.9 F)17 July 2007: Record daily precipitation 229.6 mm (9.0 in)20002005
3 all-time records were set at San Jeronimito between 13 January 1997 and 17 July 2007. Each dot is a new record.
When San Jeronimito set new all-time records
DateKindDetail
1997-01-13Record low minimum temperatureRecord low minimum temperature 8.9 C (48.0 F)
1999-12-05Record low minimum temperatureRecord low minimum temperature 8.3 C (46.9 F)
2007-07-17Record daily precipitationRecord daily precipitation 229.6 mm (9.0 in)

Wettest Day of Each Month

Jul: 229.6 mm (9.0 in)
Record daily precipitation for each month at San Jeronimito The wettest day on record for each calendar month at San Jeronimito. The most was 229.6 mm (9.0 in) on 17 July 2007. 0100200300 Jan: 84.8 mm (3.3 in), 26 January 1992 Jan Feb: 21.8 mm (0.9 in), 6 February 1978 Feb Mar: 41.7 mm (1.6 in), 2 March 2001 Mar Apr: 14.5 mm (0.6 in), 4 April 1973 Apr May: 85.9 mm (3.4 in), 26 May 1983 May Jun: 167.4 mm (6.6 in), 15 June 1967 Jun Jul: 229.6 mm (9.0 in), 17 July 2007 Jul Aug: 168.4 mm (6.6 in), 28 August 1981 Aug Sep: 220.0 mm (8.7 in), 26 September 1967 Sep Oct: 184.9 mm (7.3 in), 7 October 1976 Oct Nov: 224.8 mm (8.9 in), 12 November 1961 Nov Dec: 46.5 mm (1.8 in), 27 December 1974 Dec
The wettest day on record for each calendar month at San Jeronimito. The most was 229.6 mm (9.0 in) on 17 July 2007.
Record daily precipitation for each month at San Jeronimito
MonthRecord daily precipitation (mm)Date
Jan84.8 mm (3.3 in)26 January 1992
Feb21.8 mm (0.9 in)6 February 1978
Mar41.7 mm (1.6 in)2 March 2001
Apr14.5 mm (0.6 in)4 April 1973
May85.9 mm (3.4 in)26 May 1983
Jun167.4 mm (6.6 in)15 June 1967
Jul229.6 mm (9.0 in)17 July 2007
Aug168.4 mm (6.6 in)28 August 1981
Sep220.0 mm (8.7 in)26 September 1967
Oct184.9 mm (7.3 in)7 October 1976
Nov224.8 mm (8.9 in)12 November 1961
Dec46.5 mm (1.8 in)27 December 1974

Period of Record Coverage

1961 to 2007
Days with data per year at San Jeronimito 47 years of record at San Jeronimito, 1961 to 2007. 4 years have data for under 90 percent of days and are left out of rankings: 1961, 1996, 1999, 2003. 1961: 187 of 365 days1962: 365 of 365 days1963: 351 of 365 days1964: 366 of 366 days1965: 361 of 365 days1966: 365 of 365 days1967: 363 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 355 of 365 days1976: 366 of 366 days1977: 361 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 354 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 334 of 365 days1987: 337 of 365 days1988: 334 of 366 days1989: 340 of 365 days1990: 365 of 365 days1991: 337 of 365 days1992: 342 of 366 days1993: 336 of 365 days1994: 340 of 365 days1995: 365 of 365 days1996: 262 of 366 days1997: 332 of 365 days1998: 332 of 365 days1999: 315 of 365 days2000: 337 of 366 days2001: 337 of 365 days2002: 335 of 365 days2003: 306 of 365 days2004: 335 of 366 days2005: 337 of 365 days2006: 334 of 365 days2007: 335 of 365 days1970198019902000
47 years of record at San Jeronimito, 1961 to 2007. 4 years have data for under 90 percent of days and are left out of rankings: 1961, 1996, 1999, 2003.
Days with data per year at San Jeronimito
YearDays with dataShare of yearComplete
196118751%No
1962365100%Yes
196335196%Yes
1964366100%Yes
196536199%Yes
1966365100%Yes
196736399%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
197535597%Yes
1976366100%Yes
197736199%Yes
1978365100%Yes
1979365100%Yes
198035497%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198633492%Yes
198733792%Yes
198833491%Yes
198934093%Yes
1990365100%Yes
199133792%Yes
199234293%Yes
199333692%Yes
199434093%Yes
1995365100%Yes
199626272%No
199733291%Yes
199833291%Yes
199931586%No
200033792%Yes
200133792%Yes
200233592%Yes
200330684%No
200433592%Yes
200533792%Yes
200633492%Yes
200733592%Yes

Latest Records

20
Latest records at San Jeronimito
DateStationRecordValueBeat old record byOld record stoodSignificance
5 December 2007San Jeronimito, MXdaily low max27.8 C (82.0 F)1.1 C (2.0 F)24 years19 of 100 (Routine)
4 December 2007San Jeronimito, MXdaily rain39.4 mm (1.6 in)39.4 mm (1.6 in)45 years56 of 100 (Notable)
15 November 2007San Jeronimito, MXdaily high max35.0 C (95.0 F)0.6 C (1.1 F)20 years14 of 100 (Routine)
11 November 2007San Jeronimito, MXdaily low min (Tie)16.1 C (61.0 F)tie38 years3 of 100 (Routine)
9 November 2007San Jeronimito, MXdaily low min (Tie)15.0 C (59.0 F)tie6 years1 of 100 (Routine)
27 October 2007San Jeronimito, MXdaily low min (Tie)16.1 C (61.0 F)tie40 years4 of 100 (Routine)
24 October 2007San Jeronimito, MXdaily low max (Tie)30.0 C (86.0 F)tie33 years3 of 100 (Routine)
23 October 2007San Jeronimito, MXdaily low max (Tie)30.0 C (86.0 F)tie33 years3 of 100 (Routine)
19 October 2007San Jeronimito, MXdaily rain31.8 mm (1.3 in)22.9 mm (0.9 in)37 years25 of 100 (Routine)
16 October 2007San Jeronimito, MXdaily rain56.4 mm (2.2 in)36.3 mm (1.4 in)24 years27 of 100 (Routine)
9 October 2007San Jeronimito, MXdaily high max35.6 C (96.1 F)0.6 C (1.1 F)0 years7 of 100 (Routine)
8 October 2007San Jeronimito, MXdaily high max (Tie)35.0 C (95.0 F)tie5 years1 of 100 (Routine)
29 September 2007San Jeronimito, MXdaily high max (Tie)35.0 C (95.0 F)tie10 years1 of 100 (Routine)
27 September 2007San Jeronimito, MXdaily high max (Tie)35.0 C (95.0 F)tie10 years1 of 100 (Routine)
17 September 2007San Jeronimito, MXdaily high max35.6 C (96.1 F)0.6 C (1.1 F)24 years14 of 100 (Routine)
16 September 2007San Jeronimito, MXdaily high max (Tie)35.0 C (95.0 F)tie30 years3 of 100 (Routine)
15 September 2007San Jeronimito, MXdaily high max35.6 C (96.1 F)0.6 C (1.1 F)10 years10 of 100 (Routine)
6 September 2007San Jeronimito, MXdaily rain62.5 mm (2.5 in)0.8 mm (0.03 in)24 years11 of 100 (Routine)
27 August 2007San Jeronimito, MXdaily low max28.3 C (82.9 F)0.6 C (1.1 F)28 years15 of 100 (Routine)
6 August 2007San Jeronimito, MXdaily rain80.8 mm (3.2 in)37.6 mm (1.5 in)20 years28 of 100 (Routine)

Climate Trend

24 complete years, 1962 to 1995
Annual mean temperature at San Jeronimito as warming stripes, 1962 to 1995 One stripe for each of 24 complete years at San Jeronimito, 1962 to 1995. Blue stripes are years cooler than the station's own mean of 25.1 C (77.1 F); red stripes are warmer. The coolest year was 1974, at 24.5 C (76.0 F), and the warmest was 1964, at 26.6 C (79.9 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1962: 26.6 C, +1.5 C from the station mean1964: 26.6 C, +1.5 C from the station mean1965: 25.1 C, +0.1 C from the station mean1966: 25.1 C, 0.0 C from the station mean1967: 24.7 C, -0.4 C from the station mean1968: 24.7 C, -0.4 C from the station mean1969: 25.6 C, +0.5 C from the station mean1970: 25.0 C, 0.0 C from the station mean1971: 24.5 C, -0.6 C from the station mean1972: 25.5 C, +0.4 C from the station mean1973: 25.0 C, 0.0 C from the station mean1974: 24.5 C, -0.6 C from the station mean1975: 24.5 C, -0.6 C from the station mean1976: 24.7 C, -0.4 C from the station mean1977: 25.5 C, +0.5 C from the station mean1978: 24.7 C, -0.4 C from the station mean1979: 24.8 C, -0.3 C from the station mean1981: 24.7 C, -0.4 C from the station mean1982: 25.4 C, +0.3 C from the station mean1983: 25.2 C, +0.1 C from the station mean1984: 24.6 C, -0.5 C from the station mean1985: 24.6 C, -0.5 C from the station mean1990: 25.3 C, +0.2 C from the station mean1995: 25.1 C, 0.0 C from the station mean19621965197019751980198519901995
One stripe for each of 24 complete years at San Jeronimito, 1962 to 1995. Blue stripes are years cooler than the station's own mean of 25.1 C (77.1 F); red stripes are warmer. The coolest year was 1974, at 24.5 C (76.0 F), and the warmest was 1964, at 26.6 C (79.9 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at San Jeronimito as warming stripes, 1962 to 1995
YearAnnual mean temperatureDifference from the station mean
196226.6 C+1.51 C
196426.6 C+1.51 C
196525.1 C+0.05 C
196625.1 C-0.03 C
196724.7 C-0.41 C
196824.7 C-0.38 C
196925.6 C+0.53 C
197025.0 C-0.05 C
197124.5 C-0.57 C
197225.5 C+0.42 C
197325.0 C-0.04 C
197424.5 C-0.61 C
197524.5 C-0.60 C
197624.7 C-0.41 C
197725.5 C+0.45 C
197824.7 C-0.40 C
197924.8 C-0.30 C
198124.7 C-0.36 C
198225.4 C+0.30 C
198325.2 C+0.09 C
198424.6 C-0.46 C
198524.6 C-0.50 C
199025.3 C+0.23 C
199525.1 C-0.02 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

1961 to 2007
Yearly extremes at San Jeronimito: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)39.4 C (102.9 F)196236.1 C (97.0 F)47
Coldest night (TNn)8.3 C (46.9 F)199911.7 C (53.1 F)47
Wettest day (Rx1day)229.6 mm (9.0 in)200799.8 mm (3.9 in)47
Wettest five days (Rx5day)522.5 mm (20.6 in)1998175.2 mm (6.9 in)47
Longest dry spell (CDD)164 days1993121 days47

Hottest day (TXx)

Hottest day (TXx) at San Jeronimito by year The hottest day of the year at San Jeronimito, 1961 to 2007. The record is 39.4 C (102.9 F) in 1962, marked on the chart; the median year is 36.1 C (97.0 F). 343638401970198019902000Record: 39.4 C (102.9 F) in 1962
The hottest day of the year at San Jeronimito, 1961 to 2007. The record is 39.4 C (102.9 F) in 1962, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at San Jeronimito by year
YearHottest day (TXx)
196137.2 C (99.0 F)
196239.4 C (102.9 F)
196336.1 C (97.0 F)
196436.1 C (97.0 F)
196537.8 C (100.0 F)
196636.7 C (98.1 F)
196735.0 C (95.0 F)
196835.0 C (95.0 F)
196938.3 C (100.9 F)
197036.1 C (97.0 F)
197136.7 C (98.1 F)
197236.7 C (98.1 F)
197336.1 C (97.0 F)
197435.0 C (95.0 F)
197537.8 C (100.0 F)
197637.8 C (100.0 F)
197737.8 C (100.0 F)
197835.0 C (95.0 F)
197936.1 C (97.0 F)
198036.7 C (98.1 F)
198135.6 C (96.1 F)
198235.6 C (96.1 F)
198335.6 C (96.1 F)
198435.0 C (95.0 F)
198535.6 C (96.1 F)
198635.6 C (96.1 F)
198735.0 C (95.0 F)
198835.0 C (95.0 F)
198935.0 C (95.0 F)
199035.6 C (96.1 F)
199136.1 C (97.0 F)
199235.0 C (95.0 F)
199335.0 C (95.0 F)
199434.4 C (93.9 F)
199535.0 C (95.0 F)
199636.1 C (97.0 F)
199738.9 C (102.0 F)
199836.1 C (97.0 F)
199936.1 C (97.0 F)
200036.7 C (98.1 F)
200137.8 C (100.0 F)
200236.7 C (98.1 F)
200335.6 C (96.1 F)
200436.7 C (98.1 F)
200537.8 C (100.0 F)
200637.8 C (100.0 F)
200737.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Jeronimito by year The coldest night of the year at San Jeronimito, 1961 to 2007. The record is 8.3 C (46.9 F) in 1999, marked on the chart; the median year is 11.7 C (53.1 F). 810121416181970198019902000Record: 8.3 C (46.9 F) in 1999
The coldest night of the year at San Jeronimito, 1961 to 2007. The record is 8.3 C (46.9 F) in 1999, marked on the chart; the median year is 11.7 C (53.1 F).
Coldest night (TNn) at San Jeronimito by year
YearColdest night (TNn)
196115.0 C (59.0 F)
196213.9 C (57.0 F)
196314.4 C (57.9 F)
196416.1 C (61.0 F)
196510.0 C (50.0 F)
196612.8 C (55.0 F)
196711.1 C (52.0 F)
196811.1 C (52.0 F)
196911.1 C (52.0 F)
197011.1 C (52.0 F)
197110.6 C (51.1 F)
197213.9 C (57.0 F)
197312.8 C (55.0 F)
197411.7 C (53.1 F)
197511.1 C (52.0 F)
197610.0 C (50.0 F)
197712.8 C (55.0 F)
197813.9 C (57.0 F)
197910.6 C (51.1 F)
198011.7 C (53.1 F)
198111.7 C (53.1 F)
198212.8 C (55.0 F)
198312.8 C (55.0 F)
198411.7 C (53.1 F)
198511.7 C (53.1 F)
198610.6 C (51.1 F)
198712.2 C (54.0 F)
198812.8 C (55.0 F)
198911.7 C (53.1 F)
199011.7 C (53.1 F)
199112.8 C (55.0 F)
199211.1 C (52.0 F)
199310.6 C (51.1 F)
199411.7 C (53.1 F)
199510.6 C (51.1 F)
199612.2 C (54.0 F)
19978.9 C (48.0 F)
199811.1 C (52.0 F)
19998.3 C (46.9 F)
200010.6 C (51.1 F)
20019.4 C (48.9 F)
200211.7 C (53.1 F)
200311.7 C (53.1 F)
200411.1 C (52.0 F)
200510.0 C (50.0 F)
200611.7 C (53.1 F)
200710.0 C (50.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Jeronimito by year The wettest day of the year at San Jeronimito, 1961 to 2007. The record is 229.6 mm (9.0 in) in 2007, marked on the chart; the median year is 99.8 mm (3.9 in). 501001502002501970198019902000Record: 229.6 mm (9.0 in) in 2007
The wettest day of the year at San Jeronimito, 1961 to 2007. The record is 229.6 mm (9.0 in) in 2007, marked on the chart; the median year is 99.8 mm (3.9 in).
Wettest day (Rx1day) at San Jeronimito by year
YearWettest day (Rx1day)
1961224.8 mm (8.9 in)
1962114.3 mm (4.5 in)
196394.0 mm (3.7 in)
196459.9 mm (2.4 in)
196580.3 mm (3.2 in)
1966121.9 mm (4.8 in)
1967220.0 mm (8.7 in)
196897.3 mm (3.8 in)
196962.0 mm (2.4 in)
197052.3 mm (2.1 in)
1971110.0 mm (4.3 in)
197293.0 mm (3.7 in)
197372.4 mm (2.9 in)
1974114.8 mm (4.5 in)
1975117.9 mm (4.6 in)
1976184.9 mm (7.3 in)
197762.0 mm (2.4 in)
197883.1 mm (3.3 in)
1979141.5 mm (5.6 in)
198074.7 mm (2.9 in)
1981168.4 mm (6.6 in)
198267.6 mm (2.7 in)
198395.3 mm (3.8 in)
198461.7 mm (2.4 in)
198587.4 mm (3.4 in)
198660.2 mm (2.4 in)
198753.8 mm (2.1 in)
1988204.7 mm (8.1 in)
1989211.8 mm (8.3 in)
199073.9 mm (2.9 in)
199199.8 mm (3.9 in)
1992150.9 mm (5.9 in)
1993142.7 mm (5.6 in)
199479.8 mm (3.1 in)
1995110.2 mm (4.3 in)
1996116.3 mm (4.6 in)
199791.2 mm (3.6 in)
1998147.8 mm (5.8 in)
1999211.8 mm (8.3 in)
2000128.3 mm (5.1 in)
200191.4 mm (3.6 in)
2002210.3 mm (8.3 in)
200386.4 mm (3.4 in)
200485.9 mm (3.4 in)
2005136.4 mm (5.4 in)
2006112.8 mm (4.4 in)
2007229.6 mm (9.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Jeronimito by year The wettest five days of the year at San Jeronimito, 1961 to 2007. The record is 522.5 mm (20.6 in) in 1998, marked on the chart; the median year is 175.2 mm (6.9 in). 02004006001970198019902000Record: 522.5 mm (20.6 in) in 1998
The wettest five days of the year at San Jeronimito, 1961 to 2007. The record is 522.5 mm (20.6 in) in 1998, marked on the chart; the median year is 175.2 mm (6.9 in).
Wettest five days (Rx5day) at San Jeronimito by year
YearWettest five days (Rx5day)
1961329.7 mm (13.0 in)
1962188.5 mm (7.4 in)
1963153.2 mm (6.0 in)
1964121.2 mm (4.8 in)
196591.5 mm (3.6 in)
1966210.3 mm (8.3 in)
1967458.6 mm (18.1 in)
1968190.5 mm (7.5 in)
196983.1 mm (3.3 in)
1970123.5 mm (4.9 in)
1971162.1 mm (6.4 in)
1972226.3 mm (8.9 in)
1973119.7 mm (4.7 in)
1974238.3 mm (9.4 in)
1975340.0 mm (13.4 in)
1976224.8 mm (8.9 in)
197795.3 mm (3.8 in)
1978150.9 mm (5.9 in)
1979170.6 mm (6.7 in)
1980176.1 mm (6.9 in)
1981417.1 mm (16.4 in)
198282.8 mm (3.3 in)
1983197.1 mm (7.8 in)
1984123.8 mm (4.9 in)
1985140.3 mm (5.5 in)
198684.9 mm (3.3 in)
1987106.1 mm (4.2 in)
1988294.4 mm (11.6 in)
1989362.2 mm (14.3 in)
199097.5 mm (3.8 in)
1991158.2 mm (6.2 in)
1992175.2 mm (6.9 in)
1993194.1 mm (7.6 in)
199480.6 mm (3.2 in)
1995169.9 mm (6.7 in)
1996215.7 mm (8.5 in)
1997192.8 mm (7.6 in)
1998522.5 mm (20.6 in)
1999342.5 mm (13.5 in)
2000225.6 mm (8.9 in)
2001107.6 mm (4.2 in)
2002269.5 mm (10.6 in)
2003167.4 mm (6.6 in)
200490.5 mm (3.6 in)
2005235.5 mm (9.3 in)
2006174.5 mm (6.9 in)
2007229.9 mm (9.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Jeronimito by year The longest dry spell of the year at San Jeronimito, 1961 to 2007. The record is 164 days in 1993, marked on the chart; the median year is 121 days. 0501001502001970198019902000Record: 164 days in 1993
The longest dry spell of the year at San Jeronimito, 1961 to 2007. The record is 164 days in 1993, marked on the chart; the median year is 121 days.
Longest dry spell (CDD) at San Jeronimito by year
YearLongest dry spell (CDD)
196149 days
1962136 days
1963147 days
1964155 days
1965119 days
196663 days
1967121 days
196869 days
1969160 days
1970102 days
1971142 days
1972150 days
197392 days
197480 days
1975149 days
1976151 days
1977122 days
1978111 days
1979153 days
1980105 days
1981135 days
1982149 days
1983125 days
1984136 days
1985154 days
1986144 days
198791 days
198895 days
1989151 days
1990133 days
1991146 days
1992124 days
1993164 days
1994141 days
1995104 days
1996121 days
1997147 days
199896 days
199998 days
200081 days
200166 days
200248 days
200337 days
2004108 days
200586 days
200659 days
200790 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

45 years, 1962 to 2007

A day with at least 104.1 mm (4.1 in) of rain is expected about once in 2 years. A day with at least 299.7 mm (11.8 in) of rain is expected about once in 100 years.

Rainfall return levels at San Jeronimito: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years104.1 mm (4.1 in)
5 years149.0 mm (5.9 in)
10 years181.5 mm (7.1 in)
25 years226.1 mm (8.9 in)
50 years261.8 mm (10.3 in)Longer than the 45 years of record
100 years299.7 mm (11.8 in)Longer than the 45 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, 45 years of values from 1962 to 2007.

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: 229.6 mm (9.0 in) in 2007; 220.0 mm (8.7 in) in 1967; 211.8 mm (8.3 in) in 1989.

Download the Data

  • Data for San Jeronimito standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for San Jeronimito 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

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