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San Borja Weather Records (MXN00002044)

Record envelope, standing records and threshold days for San Borja (MXN00002044), Mexico, with 58 years of record.

Key Facts for San Borja

  • San Borja (MXN00002044) is a weather station in Mexico at 28.73 latitude and -113.75 longitude, 445 m (1,459 ft) above sea level.
  • The station reports from 1955 to 2012, 58 years of record.
  • 1,464 records set at San Borja still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Borja tied a daily record high maximum temperature of 32.8 C (91.0 F) on 26 April 2012.

About the Station

  • Location: Mexico, 28.73 latitude, -113.75 longitude.
  • Elevation: 445 m (1,459 ft).
  • Period of record: 1955 to 2012, 58 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 Borja, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Borja. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at San Borja. 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 Borja, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.0 C (95.0 F)-5.0 C (23.0 F)n/an/a
Feb38.9 C (102.0 F)-7.2 C (19.0 F)n/an/a
Mar36.7 C (98.1 F)-4.4 C (24.1 F)n/an/a
Apr42.8 C (109.0 F)0.0 C (32.0 F)n/an/a
May41.7 C (107.1 F)0.6 C (33.1 F)n/an/a
Jun48.9 C (120.0 F)2.8 C (37.0 F)n/an/a
Jul48.9 C (120.0 F)3.9 C (39.0 F)n/an/a
Aug46.7 C (116.1 F)5.6 C (42.1 F)n/an/a
Sep45.0 C (113.0 F)0.6 C (33.1 F)n/an/a
Oct43.9 C (111.0 F)1.7 C (35.1 F)n/an/a
Nov38.9 C (102.0 F)-5.0 C (23.0 F)n/an/a
Dec35.6 C (96.1 F)-5.0 C (23.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Borja by the year they were set 1,464 records at San Borja still stand. 1963 holds the most, with 149. 0501001501955: 91956: 661957: 311958: 451959: 371960: 801961: 141962: 331963: 1491964: 111965: 221966: 211967: 201968: 201969: 331970: 161971: 371972: 261973: 181974: 61975: 91976: 171977: 141978: 441979: 161980: 141981: 171982: 241983: 211984: 161985: 381986: 101988: 161989: 311990: 231991: 201992: 101993: 221994: 121995: 111996: 421997: 201998: 301999: 372000: 252001: 92002: 202003: 132004: 102005: 142006: 152007: 532008: 342009: 162010: 152011: 232012: 91955196119671973197919851992199820042010
1,464 records at San Borja still stand. 1963 holds the most, with 149.
Standing records at San Borja by the year they were set
Year setStanding records
19559
195666
195731
195845
195937
196080
196114
196233
1963149
196411
196522
196621
196720
196820
196933
197016
197137
197226
197318
19746
19759
197617
197714
197844
197916
198014
198117
198224
198321
198416
198538
198610
198816
198931
199023
199120
199210
199322
199412
199511
199642
199720
199830
199937
200025
20019
200220
200313
200410
200514
200615
200753
200834
200916
201015
201123
20129

Wettest Day of Each Month

Oct: 79.8 mm (3.1 in)
Record daily precipitation for each month at San Borja The wettest day on record for each calendar month at San Borja. The most was 79.8 mm (3.1 in) on 3 October 1983. 020406080 Jan: 59.9 mm (2.4 in), 21 January 2010 Jan Feb: 44.2 mm (1.7 in), 26 February 1978 Feb Mar: 35.8 mm (1.4 in), 2 March 1983 Mar Apr: 41.9 mm (1.6 in), 11 April 1992 Apr May: 19.8 mm (0.8 in), 4 May 1969 May Jun: 1.0 mm (0.04 in), 4 June 1970 Jun Jul: 49.8 mm (2.0 in), 20 July 1988 Jul Aug: 52.8 mm (2.1 in), 23 August 1971 Aug Sep: 49.8 mm (2.0 in), 24 September 1997 Sep Oct: 79.8 mm (3.1 in), 3 October 1983 Oct Nov: 26.9 mm (1.1 in), 24 November 1985 Nov Dec: 67.6 mm (2.7 in), 21 December 1965 Dec
The wettest day on record for each calendar month at San Borja. The most was 79.8 mm (3.1 in) on 3 October 1983.
Record daily precipitation for each month at San Borja
MonthRecord daily precipitation (mm)Date
Jan59.9 mm (2.4 in)21 January 2010
Feb44.2 mm (1.7 in)26 February 1978
Mar35.8 mm (1.4 in)2 March 1983
Apr41.9 mm (1.6 in)11 April 1992
May19.8 mm (0.8 in)4 May 1969
Jun1.0 mm (0.04 in)4 June 1970
Jul49.8 mm (2.0 in)20 July 1988
Aug52.8 mm (2.1 in)23 August 1971
Sep49.8 mm (2.0 in)24 September 1997
Oct79.8 mm (3.1 in)3 October 1983
Nov26.9 mm (1.1 in)24 November 1985
Dec67.6 mm (2.7 in)21 December 1965

Period of Record Coverage

1955 to 2012
Days with data per year at San Borja 57 years of record at San Borja, 1955 to 2012. 15 years have data for under 90 percent of days and are left out of rankings: 1955, 1964, 1971, 1974, 1978, 1979, 1986, 1988 and others. 1955: 88 of 365 days1956: 363 of 366 days1957: 361 of 365 days1958: 363 of 365 days1959: 364 of 365 days1960: 352 of 366 days1961: 364 of 365 days1962: 333 of 365 days1963: 350 of 365 days1964: 83 of 366 days1965: 363 of 365 days1966: 365 of 365 days1967: 364 of 365 days1968: 362 of 366 days1969: 353 of 365 days1970: 364 of 365 days1971: 300 of 365 days1972: 351 of 366 days1973: 365 of 365 days1974: 299 of 365 days1975: 329 of 365 days1976: 366 of 366 days1977: 364 of 365 days1978: 303 of 365 days1979: 303 of 365 days1980: 366 of 366 days1981: 335 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 120 of 365 days1988: 304 of 366 days1989: 335 of 365 days1990: 304 of 365 days1991: 271 of 365 days1992: 335 of 366 days1993: 260 of 365 days1994: 362 of 365 days1995: 299 of 365 days1996: 328 of 366 days1997: 362 of 365 days1998: 333 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 359 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 354 of 365 days2008: 329 of 366 days2009: 364 of 365 days2010: 363 of 365 days2011: 363 of 365 days2012: 182 of 366 days196019701980199020002010
57 years of record at San Borja, 1955 to 2012. 15 years have data for under 90 percent of days and are left out of rankings: 1955, 1964, 1971, 1974, 1978, 1979, 1986, 1988 and others.
Days with data per year at San Borja
YearDays with dataShare of yearComplete
19558824%No
195636399%Yes
195736199%Yes
195836399%Yes
1959364100%Yes
196035296%Yes
1961364100%Yes
196233391%Yes
196335096%Yes
19648323%No
196536399%Yes
1966365100%Yes
1967364100%Yes
196836299%Yes
196935397%Yes
1970364100%Yes
197130082%No
197235196%Yes
1973365100%Yes
197429982%No
197532990%Yes
1976366100%Yes
1977364100%Yes
197830383%No
197930383%No
1980366100%Yes
198133592%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
198612033%No
198830483%No
198933592%Yes
199030483%No
199127174%No
199233592%Yes
199326071%No
199436299%Yes
199529982%No
199632890%No
199736299%Yes
199833391%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
200235998%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006364100%Yes
200735497%Yes
200832990%No
2009364100%Yes
201036399%Yes
201136399%Yes
201218250%No

Latest Records

20
Latest records at San Borja
DateStationRecordValueBeat old record byOld record stoodSignificance
26 April 2012San Borja, MXdaily high max (Tie)32.8 C (91.0 F)tie28 years3 of 100 (Routine)
20 April 2012San Borja, MXdaily low min (Tie)3.9 C (39.0 F)tie45 years4 of 100 (Routine)
18 April 2012San Borja, MXdaily high min (Tie)16.7 C (62.1 F)tie32 years3 of 100 (Routine)
9 April 2012San Borja, MXdaily high min16.7 C (62.1 F)1.1 C (2.0 F)49 years22 of 100 (Routine)
5 April 2012San Borja, MXmonthly low min (Tie)0.0 C (32.0 F)tie0 years3 of 100 (Routine)
21 March 2012San Borja, MXdaily low max12.8 C (55.0 F)3.9 C (7.0 F)39 years24 of 100 (Routine)
19 March 2012San Borja, MXdaily low min (Tie)3.9 C (39.0 F)tie27 years3 of 100 (Routine)
18 March 2012San Borja, MXdaily low min0.0 C (32.0 F)1.7 C (3.1 F)40 years22 of 100 (Routine)
17 March 2012San Borja, MXdaily rain8.9 mm (0.35 in)6.1 mm (0.24 in)29 years20 of 100 (Routine)
5 March 2012San Borja, MXdaily high min (Tie)16.7 C (62.1 F)tie1 year1 of 100 (Routine)
4 March 2012San Borja, MXdaily high min15.6 C (60.1 F)1.7 C (3.1 F)56 years26 of 100 (Routine)
27 February 2012San Borja, MXdaily low max11.7 C (53.1 F)1.1 C (2.0 F)14 years11 of 100 (Routine)
26 February 2012San Borja, MXmonthly low max (Tie)10.0 C (50.0 F)tie56 years7 of 100 (Routine)
16 February 2012San Borja, MXdaily rain3.8 mm (0.15 in)2.0 mm (0.08 in)9 years9 of 100 (Routine)
15 February 2012San Borja, MXdaily rain3.8 mm (0.15 in)3.8 mm (0.15 in)56 years20 of 100 (Routine)
15 February 2012San Borja, MXdaily low max15.0 C (59.0 F)0.6 C (1.1 F)36 years17 of 100 (Routine)
29 January 2012San Borja, MXdaily high min16.7 C (62.1 F)1.7 C (3.1 F)52 years24 of 100 (Routine)
14 January 2012San Borja, MXdaily high min (Tie)15.0 C (59.0 F)tie53 years5 of 100 (Routine)
3 January 2012San Borja, MXdaily high min (Tie)13.9 C (57.0 F)tie53 years5 of 100 (Routine)
13 December 2011San Borja, MXdaily low max12.8 C (55.0 F)2.2 C (4.0 F)38 years20 of 100 (Routine)

Climate Trend

33 complete years, 1957 to 2011
Annual mean temperature at San Borja as warming stripes, 1957 to 2011 One stripe for each of 33 complete years at San Borja, 1957 to 2011. Blue stripes are years cooler than the station's own mean of 19.7 C (67.5 F); red stripes are warmer. The coolest year was 2007, at 17.2 C (63.0 F), and the warmest was 1963, at 24.6 C (76.2 F). The strongest colour marks a difference of 4.9 C (8.8 F). 1957: 20.1 C, +0.3 C from the station mean1958: 21.2 C, +1.5 C from the station mean1959: 19.7 C, 0.0 C from the station mean1961: 19.8 C, +0.1 C from the station mean1963: 24.6 C, +4.8 C from the station mean1965: 20.1 C, +0.4 C from the station mean1966: 19.5 C, -0.2 C from the station mean1967: 19.7 C, -0.1 C from the station mean1968: 19.4 C, -0.3 C from the station mean1969: 18.8 C, -0.9 C from the station mean1970: 19.6 C, -0.1 C from the station mean1973: 18.7 C, -1.0 C from the station mean1976: 19.9 C, +0.2 C from the station mean1977: 20.2 C, +0.5 C from the station mean1980: 20.6 C, +0.9 C from the station mean1982: 20.1 C, +0.4 C from the station mean1983: 19.2 C, -0.5 C from the station mean1984: 19.8 C, +0.1 C from the station mean1985: 18.9 C, -0.9 C from the station mean1994: 20.1 C, +0.3 C from the station mean1997: 19.6 C, -0.2 C from the station mean1999: 17.7 C, -2.1 C from the station mean2000: 18.2 C, -1.6 C from the station mean2001: 20.5 C, +0.7 C from the station mean2002: 20.8 C, +1.1 C from the station mean2003: 20.4 C, +0.7 C from the station mean2004: 19.1 C, -0.6 C from the station mean2005: 19.0 C, -0.7 C from the station mean2006: 18.7 C, -1.0 C from the station mean2007: 17.2 C, -2.5 C from the station mean2009: 19.3 C, -0.4 C from the station mean2010: 20.0 C, +0.2 C from the station mean2011: 20.4 C, +0.6 C from the station mean195719601965197019751980198519901995200020052010
One stripe for each of 33 complete years at San Borja, 1957 to 2011. Blue stripes are years cooler than the station's own mean of 19.7 C (67.5 F); red stripes are warmer. The coolest year was 2007, at 17.2 C (63.0 F), and the warmest was 1963, at 24.6 C (76.2 F). The strongest colour marks a difference of 4.9 C (8.8 F).
Annual mean temperature at San Borja as warming stripes, 1957 to 2011
YearAnnual mean temperatureDifference from the station mean
195720.1 C+0.34 C
195821.2 C+1.53 C
195919.7 C-0.04 C
196119.8 C+0.09 C
196324.6 C+4.85 C
196520.1 C+0.42 C
196619.5 C-0.18 C
196719.7 C-0.05 C
196819.4 C-0.31 C
196918.8 C-0.89 C
197019.6 C-0.10 C
197318.7 C-1.00 C
197619.9 C+0.22 C
197720.2 C+0.48 C
198020.6 C+0.87 C
198220.1 C+0.39 C
198319.2 C-0.48 C
198419.8 C+0.10 C
198518.9 C-0.85 C
199420.1 C+0.34 C
199719.6 C-0.16 C
199917.7 C-2.05 C
200018.2 C-1.56 C
200120.5 C+0.75 C
200220.8 C+1.09 C
200320.4 C+0.70 C
200419.1 C-0.64 C
200519.0 C-0.73 C
200618.7 C-0.99 C
200717.2 C-2.50 C
200919.3 C-0.42 C
201020.0 C+0.25 C
201120.4 C+0.64 C

The fitted trend in annual mean temperature here over 1957 to 2011 is -0.23 C (-0.46 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.41 F (-0.83 to 0.01) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Borja
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.23 C (-0.46 to 0.01) per decade-0.41 F (-0.83 to 0.01) per decade1957 to 201133Not clearly different from zero
Mean daily maximum-0.31 C (-0.61 to -0.01) per decade-0.56 F (-1.10 to -0.01) per decade1957 to 201133Fall
Mean daily minimum-0.1 C (-0.4 to 0.1) per decade-0.3 F (-0.7 to 0.2) per decade1957 to 201133Not 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

1955 to 2012
Yearly extremes at San Borja: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)48.9 C (120.0 F)197841.7 C (107.1 F)57
Coldest night (TNn)-7.2 C (19.0 F)19561.7 C (35.1 F)57
Wettest day (Rx1day)79.8 mm (3.1 in)198329.0 mm (1.1 in)57
Wettest five days (Rx5day)116.1 mm (4.6 in)201037.6 mm (1.5 in)57
Longest dry spell (CDD)305 days1982153 days57

Hottest day (TXx)

Hottest day (TXx) at San Borja by year The hottest day of the year at San Borja, 1955 to 2012. The record is 48.9 C (120.0 F) in 1978, marked on the chart; the median year is 41.7 C (107.1 F). 35404550196019701980199020002010Record: 48.9 C (120.0 F) in 1978
The hottest day of the year at San Borja, 1955 to 2012. The record is 48.9 C (120.0 F) in 1978, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at San Borja by year
YearHottest day (TXx)
195536.7 C (98.1 F)
195642.8 C (109.0 F)
195740.0 C (104.0 F)
195845.0 C (113.0 F)
195943.9 C (111.0 F)
196041.7 C (107.1 F)
196140.6 C (105.1 F)
196241.7 C (107.1 F)
196345.6 C (114.1 F)
196441.7 C (107.1 F)
196538.9 C (102.0 F)
196640.0 C (104.0 F)
196740.6 C (105.1 F)
196843.9 C (111.0 F)
196943.9 C (111.0 F)
197038.9 C (102.0 F)
197142.8 C (109.0 F)
197245.6 C (114.1 F)
197341.7 C (107.1 F)
197440.6 C (105.1 F)
197540.0 C (104.0 F)
197640.0 C (104.0 F)
197740.6 C (105.1 F)
197848.9 C (120.0 F)
197943.9 C (111.0 F)
198042.8 C (109.0 F)
198145.0 C (113.0 F)
198246.7 C (116.1 F)
198342.8 C (109.0 F)
198440.6 C (105.1 F)
198545.6 C (114.1 F)
198635.0 C (95.0 F)
198841.7 C (107.1 F)
198943.9 C (111.0 F)
199045.0 C (113.0 F)
199140.6 C (105.1 F)
199240.6 C (105.1 F)
199341.7 C (107.1 F)
199443.9 C (111.0 F)
199541.7 C (107.1 F)
199640.6 C (105.1 F)
199741.7 C (107.1 F)
199838.9 C (102.0 F)
199938.9 C (102.0 F)
200040.6 C (105.1 F)
200141.7 C (107.1 F)
200245.6 C (114.1 F)
200341.7 C (107.1 F)
200441.7 C (107.1 F)
200540.6 C (105.1 F)
200645.0 C (113.0 F)
200740.6 C (105.1 F)
200845.0 C (113.0 F)
200941.7 C (107.1 F)
201043.9 C (111.0 F)
201147.8 C (118.0 F)
201238.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Borja by year The coldest night of the year at San Borja, 1955 to 2012. The record is -7.2 C (19.0 F) in 1956, marked on the chart; the median year is 1.7 C (35.1 F). -10-50510196019701980199020002010Record: -7.2 C (19.0 F) in 1956
The coldest night of the year at San Borja, 1955 to 2012. The record is -7.2 C (19.0 F) in 1956, marked on the chart; the median year is 1.7 C (35.1 F).
Coldest night (TNn) at San Borja by year
YearColdest night (TNn)
19553.9 C (39.0 F)
1956-7.2 C (19.0 F)
19570.6 C (33.1 F)
19585.0 C (41.0 F)
19590.6 C (33.1 F)
1960-1.1 C (30.0 F)
19611.7 C (35.1 F)
19620.6 C (33.1 F)
19638.9 C (48.0 F)
19645.0 C (41.0 F)
19653.9 C (39.0 F)
1966-5.0 C (23.0 F)
19672.8 C (37.0 F)
1968-5.0 C (23.0 F)
1969-4.4 C (24.1 F)
19702.8 C (37.0 F)
19711.7 C (35.1 F)
19721.7 C (35.1 F)
19730.6 C (33.1 F)
19740.6 C (33.1 F)
19750.0 C (32.0 F)
19762.8 C (37.0 F)
19771.7 C (35.1 F)
19782.8 C (37.0 F)
19791.7 C (35.1 F)
19803.9 C (39.0 F)
19815.0 C (41.0 F)
19823.9 C (39.0 F)
19832.8 C (37.0 F)
1984-3.3 C (26.1 F)
1985-5.0 C (23.0 F)
19865.0 C (41.0 F)
19880.0 C (32.0 F)
19890.6 C (33.1 F)
19900.6 C (33.1 F)
19911.7 C (35.1 F)
19921.7 C (35.1 F)
19932.8 C (37.0 F)
19941.7 C (35.1 F)
19952.8 C (37.0 F)
1996-2.2 C (28.0 F)
1997-2.2 C (28.0 F)
19982.8 C (37.0 F)
19991.7 C (35.1 F)
20001.7 C (35.1 F)
20011.7 C (35.1 F)
20021.7 C (35.1 F)
20032.8 C (37.0 F)
20043.9 C (39.0 F)
20053.9 C (39.0 F)
20062.8 C (37.0 F)
20070.0 C (32.0 F)
20082.8 C (37.0 F)
20090.6 C (33.1 F)
20102.8 C (37.0 F)
20110.0 C (32.0 F)
20120.0 C (32.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Borja by year The wettest day of the year at San Borja, 1955 to 2012. The record is 79.8 mm (3.1 in) in 1983, marked on the chart; the median year is 29.0 mm (1.1 in). 020406080196019701980199020002010Record: 79.8 mm (3.1 in) in 1983
The wettest day of the year at San Borja, 1955 to 2012. The record is 79.8 mm (3.1 in) in 1983, marked on the chart; the median year is 29.0 mm (1.1 in).
Wettest day (Rx1day) at San Borja by year
YearWettest day (Rx1day)
19552.8 mm (0.11 in)
19566.9 mm (0.27 in)
195734.8 mm (1.4 in)
195830.0 mm (1.2 in)
195946.0 mm (1.8 in)
196023.9 mm (0.9 in)
196132.8 mm (1.3 in)
196234.8 mm (1.4 in)
19632.8 mm (0.11 in)
19640.3 mm (0.01 in)
196567.6 mm (2.7 in)
196639.9 mm (1.6 in)
196752.8 mm (2.1 in)
196820.8 mm (0.8 in)
196939.9 mm (1.6 in)
197034.8 mm (1.4 in)
197152.8 mm (2.1 in)
197239.4 mm (1.6 in)
197343.9 mm (1.7 in)
197423.4 mm (0.9 in)
197519.3 mm (0.8 in)
197635.3 mm (1.4 in)
197727.9 mm (1.1 in)
197844.2 mm (1.7 in)
197920.8 mm (0.8 in)
198029.0 mm (1.1 in)
198139.9 mm (1.6 in)
198261.0 mm (2.4 in)
198379.8 mm (3.1 in)
198421.8 mm (0.9 in)
198526.9 mm (1.1 in)
198613.0 mm (0.5 in)
198849.8 mm (2.0 in)
198919.8 mm (0.8 in)
199015.7 mm (0.6 in)
199130.0 mm (1.2 in)
199241.9 mm (1.6 in)
199316.8 mm (0.7 in)
199445.0 mm (1.8 in)
199539.9 mm (1.6 in)
199611.9 mm (0.5 in)
199749.8 mm (2.0 in)
19989.9 mm (0.39 in)
199914.0 mm (0.6 in)
200025.9 mm (1.0 in)
200125.9 mm (1.0 in)
200214.0 mm (0.6 in)
200322.9 mm (0.9 in)
200434.8 mm (1.4 in)
200519.3 mm (0.8 in)
200653.8 mm (2.1 in)
200762.0 mm (2.4 in)
200811.9 mm (0.5 in)
200917.3 mm (0.7 in)
201059.9 mm (2.4 in)
201110.9 mm (0.4 in)
20129.9 mm (0.39 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Borja by year The wettest five days of the year at San Borja, 1955 to 2012. The record is 116.1 mm (4.6 in) in 2010, marked on the chart; the median year is 37.6 mm (1.5 in). 050100150196019701980199020002010Record: 116.1 mm (4.6 in) in 2010
The wettest five days of the year at San Borja, 1955 to 2012. The record is 116.1 mm (4.6 in) in 2010, marked on the chart; the median year is 37.6 mm (1.5 in).
Wettest five days (Rx5day) at San Borja by year
YearWettest five days (Rx5day)
19555.6 mm (0.22 in)
19566.9 mm (0.27 in)
195737.6 mm (1.5 in)
195831.5 mm (1.2 in)
195946.0 mm (1.8 in)
196034.6 mm (1.4 in)
196174.1 mm (2.9 in)
196267.6 mm (2.7 in)
19630.8 mm (0.03 in)
19640.6 mm (0.02 in)
196587.9 mm (3.5 in)
196674.3 mm (2.9 in)
196788.6 mm (3.5 in)
196826.4 mm (1.0 in)
196942.0 mm (1.7 in)
197034.8 mm (1.4 in)
197152.8 mm (2.1 in)
197239.4 mm (1.6 in)
197347.0 mm (1.9 in)
197461.6 mm (2.4 in)
197519.3 mm (0.8 in)
197659.2 mm (2.3 in)
197751.8 mm (2.0 in)
197889.4 mm (3.5 in)
197920.8 mm (0.8 in)
198029.0 mm (1.1 in)
198145.9 mm (1.8 in)
198261.0 mm (2.4 in)
1983110.5 mm (4.4 in)
198441.6 mm (1.6 in)
198526.9 mm (1.1 in)
198613.0 mm (0.5 in)
198849.8 mm (2.0 in)
198919.8 mm (0.8 in)
199015.7 mm (0.6 in)
199130.0 mm (1.2 in)
199252.8 mm (2.1 in)
199316.8 mm (0.7 in)
199484.9 mm (3.3 in)
199569.9 mm (2.8 in)
199611.9 mm (0.5 in)
199761.2 mm (2.4 in)
19989.9 mm (0.39 in)
199914.0 mm (0.6 in)
200053.6 mm (2.1 in)
200126.7 mm (1.1 in)
200214.0 mm (0.6 in)
200333.8 mm (1.3 in)
200447.8 mm (1.9 in)
200529.9 mm (1.2 in)
200660.4 mm (2.4 in)
200765.8 mm (2.6 in)
200816.7 mm (0.7 in)
200920.1 mm (0.8 in)
2010116.1 mm (4.6 in)
201121.8 mm (0.9 in)
201213.7 mm (0.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Borja by year The longest dry spell of the year at San Borja, 1955 to 2012. The record is 305 days in 1982, marked on the chart; the median year is 153 days. 0100200300400196019701980199020002010Record: 305 days in 1982
The longest dry spell of the year at San Borja, 1955 to 2012. The record is 305 days in 1982, marked on the chart; the median year is 153 days.
Longest dry spell (CDD) at San Borja by year
YearLongest dry spell (CDD)
195559 days
1956137 days
1957254 days
1958116 days
1959213 days
1960141 days
1961250 days
1962102 days
1963153 days
196484 days
1965239 days
1966153 days
1967125 days
1968128 days
196986 days
197091 days
197169 days
1972148 days
1973242 days
197478 days
1975255 days
1976145 days
1977155 days
1978241 days
1979108 days
1980169 days
198188 days
1982305 days
1983122 days
1984171 days
1985188 days
198648 days
198881 days
1989184 days
1990153 days
1991109 days
1992215 days
1993145 days
1994187 days
1995126 days
1996129 days
1997266 days
1998290 days
1999173 days
2000171 days
2001161 days
2002174 days
2003134 days
2004155 days
2005114 days
200688 days
2007117 days
2008155 days
2009175 days
2010160 days
2011196 days
2012104 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

44 years, 1956 to 2011

A day with at least 30.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 83.9 mm (3.3 in) of rain is expected about once in 100 years.

Rainfall return levels at San Borja: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years30.7 mm (1.2 in)
5 years46.9 mm (1.8 in)
10 years56.7 mm (2.2 in)
25 years68.4 mm (2.7 in)
50 years76.4 mm (3.0 in)Longer than the 44 years of record
100 years83.9 mm (3.3 in)Longer than the 44 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, 44 years of values from 1956 to 2011.

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: 79.8 mm (3.1 in) in 1983; 67.6 mm (2.7 in) in 1965; 62.0 mm (2.4 in) in 2007.

Download the Data

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