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La Concepcion Weather Records (MXN00030267)

Record envelope, standing records and threshold days for La Concepcion (MXN00030267), Mexico, with 38 years of record.

Key Facts for La Concepcion

  • La Concepcion (MXN00030267) is a weather station in Mexico at 19.60 latitude and -96.90 longitude, 1,000 m (3,280 ft) above sea level.
  • The station reports from 1974 to 2011, 38 years of record.
  • 1,464 records set at La Concepcion still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • La Concepcion tied a daily record low maximum temperature of 15.0 C (59.0 F) on 10 December 2011.

About the Station

  • Location: Mexico, 19.60 latitude, -96.90 longitude.
  • Elevation: 1,000 m (3,280 ft).
  • Period of record: 1974 to 2011, 38 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 La Concepcion, with 2026 drawn through them The band shows the record high and record low for each calendar day at La Concepcion. 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 La Concepcion. 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 La Concepcion, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.8 C (91.0 F)2.8 C (37.0 F)n/an/a
Feb32.2 C (90.0 F)2.8 C (37.0 F)n/an/a
Mar35.6 C (96.1 F)4.4 C (39.9 F)n/an/a
Apr40.0 C (104.0 F)6.1 C (43.0 F)n/an/a
May40.0 C (104.0 F)10.0 C (50.0 F)n/an/a
Jun38.9 C (102.0 F)10.6 C (51.1 F)n/an/a
Jul35.0 C (95.0 F)10.0 C (50.0 F)n/an/a
Aug35.6 C (96.1 F)10.6 C (51.1 F)n/an/a
Sep35.6 C (96.1 F)10.6 C (51.1 F)n/an/a
Oct36.7 C (98.1 F)7.8 C (46.0 F)n/an/a
Nov35.0 C (95.0 F)5.6 C (42.1 F)n/an/a
Dec32.2 C (90.0 F)1.7 C (35.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at La Concepcion by the year they were set 1,464 records at La Concepcion still stand. 1987 holds the most, with 170. 0501001502001974: 181975: 421976: 301977: 441978: 1271979: 351980: 361981: 221982: 241983: 361984: 471985: 171986: 1181987: 1701988: 631989: 391990: 401991: 361992: 131993: 211994: 181995: 271996: 321997: 421998: 1021999: 302000: 182001: 102002: 312003: 252004: 152005: 172006: 272007: 102008: 172009: 102010: 342011: 211974197819821986199019941998200220062010
1,464 records at La Concepcion still stand. 1987 holds the most, with 170.
Standing records at La Concepcion by the year they were set
Year setStanding records
197418
197542
197630
197744
1978127
197935
198036
198122
198224
198336
198447
198517
1986118
1987170
198863
198939
199040
199136
199213
199321
199418
199527
199632
199742
1998102
199930
200018
200110
200231
200325
200415
200517
200627
200710
200817
200910
201034
201121

Wettest Day of Each Month

Sep: 286.8 mm (11.3 in)
Record daily precipitation for each month at La Concepcion The wettest day on record for each calendar month at La Concepcion. The most was 286.8 mm (11.3 in) on 20 September 1974. 0100200300 Jan: 79.5 mm (3.1 in), 22 January 1994 Jan Feb: 40.9 mm (1.6 in), 4 February 2007 Feb Mar: 128.0 mm (5.0 in), 4 March 1988 Mar Apr: 131.8 mm (5.2 in), 21 April 1994 Apr May: 75.2 mm (3.0 in), 14 May 1991 May Jun: 165.1 mm (6.5 in), 28 June 1991 Jun Jul: 125.0 mm (4.9 in), 12 July 1999 Jul Aug: 176.8 mm (7.0 in), 5 August 1979 Aug Sep: 286.8 mm (11.3 in), 20 September 1974 Sep Oct: 146.8 mm (5.8 in), 10 October 1997 Oct Nov: 45.7 mm (1.8 in), 16 November 2001 Nov Dec: 35.6 mm (1.4 in), 11 December 1997 Dec
The wettest day on record for each calendar month at La Concepcion. The most was 286.8 mm (11.3 in) on 20 September 1974.
Record daily precipitation for each month at La Concepcion
MonthRecord daily precipitation (mm)Date
Jan79.5 mm (3.1 in)22 January 1994
Feb40.9 mm (1.6 in)4 February 2007
Mar128.0 mm (5.0 in)4 March 1988
Apr131.8 mm (5.2 in)21 April 1994
May75.2 mm (3.0 in)14 May 1991
Jun165.1 mm (6.5 in)28 June 1991
Jul125.0 mm (4.9 in)12 July 1999
Aug176.8 mm (7.0 in)5 August 1979
Sep286.8 mm (11.3 in)20 September 1974
Oct146.8 mm (5.8 in)10 October 1997
Nov45.7 mm (1.8 in)16 November 2001
Dec35.6 mm (1.4 in)11 December 1997

Period of Record Coverage

1974 to 2011
Days with data per year at La Concepcion 38 years of record at La Concepcion, 1974 to 2011. 2 years have data for under 90 percent of days and are left out of rankings: 1974, 1978. 1974: 189 of 365 days1975: 361 of 365 days1976: 362 of 366 days1977: 333 of 365 days1978: 176 of 365 days1979: 362 of 365 days1980: 363 of 366 days1981: 363 of 365 days1982: 361 of 365 days1983: 360 of 365 days1984: 363 of 366 days1985: 358 of 365 days1986: 353 of 365 days1987: 351 of 365 days1988: 359 of 366 days1989: 362 of 365 days1990: 355 of 365 days1991: 361 of 365 days1992: 360 of 366 days1993: 361 of 365 days1994: 360 of 365 days1995: 362 of 365 days1996: 357 of 366 days1997: 360 of 365 days1998: 334 of 365 days1999: 333 of 365 days2000: 364 of 366 days2001: 363 of 365 days2002: 360 of 365 days2003: 360 of 365 days2004: 361 of 366 days2005: 364 of 365 days2006: 363 of 365 days2007: 363 of 365 days2008: 359 of 366 days2009: 362 of 365 days2010: 357 of 365 days2011: 364 of 365 days19751980198519901995200020052010
38 years of record at La Concepcion, 1974 to 2011. 2 years have data for under 90 percent of days and are left out of rankings: 1974, 1978.
Days with data per year at La Concepcion
YearDays with dataShare of yearComplete
197418952%No
197536199%Yes
197636299%Yes
197733391%Yes
197817648%No
197936299%Yes
198036399%Yes
198136399%Yes
198236199%Yes
198336099%Yes
198436399%Yes
198535898%Yes
198635397%Yes
198735196%Yes
198835998%Yes
198936299%Yes
199035597%Yes
199136199%Yes
199236098%Yes
199336199%Yes
199436099%Yes
199536299%Yes
199635798%Yes
199736099%Yes
199833492%Yes
199933391%Yes
200036499%Yes
200136399%Yes
200236099%Yes
200336099%Yes
200436199%Yes
2005364100%Yes
200636399%Yes
200736399%Yes
200835998%Yes
200936299%Yes
201035798%Yes
2011364100%Yes

Latest Records

20
Latest records at La Concepcion
DateStationRecordValueBeat old record byOld record stoodSignificance
10 December 2011La Concepcion, MXdaily low max (Tie)15.0 C (59.0 F)tie24 years2 of 100 (Routine)
5 December 2011La Concepcion, MXdaily low min (Tie)9.4 C (48.9 F)tie20 years2 of 100 (Routine)
2 December 2011La Concepcion, MXdaily low min8.3 C (46.9 F)0.6 C (1.1 F)36 years16 of 100 (Routine)
1 December 2011La Concepcion, MXdaily low min7.2 C (45.0 F)1.7 C (3.1 F)36 years21 of 100 (Routine)
30 November 2011La Concepcion, MXdaily low min6.7 C (44.1 F)0.5 C (0.9 F)24 years12 of 100 (Routine)
29 November 2011La Concepcion, MXmonthly low min5.6 C (42.1 F)0.5 C (0.9 F)12 years18 of 100 (Routine)
27 November 2011La Concepcion, MXdaily low max12.8 C (55.0 F)0.5 C (0.9 F)17 years9 of 100 (Routine)
17 November 2011La Concepcion, MXdaily high min17.2 C (63.0 F)1.6 C (2.9 F)17 years15 of 100 (Routine)
16 November 2011La Concepcion, MXdaily high max28.9 C (84.0 F)1.1 C (2.0 F)0 years5 of 100 (Routine)
16 November 2011La Concepcion, MXdaily high min (Tie)16.1 C (61.0 F)tie13 years1 of 100 (Routine)
10 November 2011La Concepcion, MXdaily low max15.0 C (59.0 F)0.6 C (1.1 F)24 years11 of 100 (Routine)
25 October 2011La Concepcion, MXdaily low min10.0 C (50.0 F)1.1 C (2.0 F)12 years11 of 100 (Routine)
20 October 2011La Concepcion, MXdaily low min (Tie)10.0 C (50.0 F)tie21 years2 of 100 (Routine)
14 September 2011La Concepcion, MXdaily low min (Tie)15.0 C (59.0 F)tie34 years3 of 100 (Routine)
7 September 2011La Concepcion, MXdaily high min (Tie)18.3 C (64.9 F)tie8 years1 of 100 (Routine)
18 August 2011La Concepcion, MXdaily high min (Tie)17.2 C (63.0 F)tie30 years3 of 100 (Routine)
11 August 2011La Concepcion, MXdaily high min (Tie)18.3 C (64.9 F)tie30 years3 of 100 (Routine)
10 August 2011La Concepcion, MXdaily high min (Tie)18.3 C (64.9 F)tie16 years1 of 100 (Routine)
9 August 2011La Concepcion, MXdaily high min (Tie)17.2 C (63.0 F)tie16 years1 of 100 (Routine)
1 July 2011La Concepcion, MXdaily rain77.5 mm (3.1 in)32.5 mm (1.3 in)20 years26 of 100 (Routine)

Climate Trend

33 complete years, 1975 to 2011
Annual mean temperature at La Concepcion as warming stripes, 1975 to 2011 One stripe for each of 33 complete years at La Concepcion, 1975 to 2011. Blue stripes are years cooler than the station's own mean of 19.1 C (66.4 F); red stripes are warmer. The coolest year was 1987, at 15.1 C (59.1 F), and the warmest was 1995, at 20.1 C (68.1 F). The strongest colour marks a difference of 4.1 C (7.4 F). 1975: 19.7 C, +0.6 C from the station mean1976: 18.8 C, -0.3 C from the station mean1979: 19.3 C, +0.2 C from the station mean1980: 19.4 C, +0.3 C from the station mean1981: 19.1 C, 0.0 C from the station mean1982: 19.9 C, +0.8 C from the station mean1983: 19.4 C, +0.3 C from the station mean1984: 18.8 C, -0.3 C from the station mean1985: 19.1 C, -0.1 C from the station mean1986: 16.5 C, -2.7 C from the station mean1987: 15.1 C, -4.0 C from the station mean1988: 17.3 C, -1.8 C from the station mean1989: 19.4 C, +0.3 C from the station mean1990: 19.5 C, +0.3 C from the station mean1991: 19.7 C, +0.5 C from the station mean1992: 18.6 C, -0.5 C from the station mean1993: 19.2 C, +0.1 C from the station mean1994: 19.6 C, +0.5 C from the station mean1995: 20.1 C, +0.9 C from the station mean1996: 19.4 C, +0.2 C from the station mean1997: 19.5 C, +0.4 C from the station mean2000: 19.5 C, +0.4 C from the station mean2001: 19.4 C, +0.3 C from the station mean2002: 19.8 C, +0.6 C from the station mean2003: 20.0 C, +0.8 C from the station mean2004: 19.4 C, +0.2 C from the station mean2005: 19.6 C, +0.5 C from the station mean2006: 19.6 C, +0.4 C from the station mean2007: 19.4 C, +0.3 C from the station mean2008: 19.4 C, +0.3 C from the station mean2009: 19.5 C, +0.4 C from the station mean2010: 18.8 C, -0.3 C from the station mean2011: 19.7 C, +0.6 C from the station mean19751980198519901995200020052010
One stripe for each of 33 complete years at La Concepcion, 1975 to 2011. Blue stripes are years cooler than the station's own mean of 19.1 C (66.4 F); red stripes are warmer. The coolest year was 1987, at 15.1 C (59.1 F), and the warmest was 1995, at 20.1 C (68.1 F). The strongest colour marks a difference of 4.1 C (7.4 F).
Annual mean temperature at La Concepcion as warming stripes, 1975 to 2011
YearAnnual mean temperatureDifference from the station mean
197519.7 C+0.58 C
197618.8 C-0.31 C
197919.3 C+0.18 C
198019.4 C+0.25 C
198119.1 C-0.02 C
198219.9 C+0.75 C
198319.4 C+0.30 C
198418.8 C-0.31 C
198519.1 C-0.08 C
198616.5 C-2.68 C
198715.1 C-4.05 C
198817.3 C-1.80 C
198919.4 C+0.26 C
199019.5 C+0.32 C
199119.7 C+0.53 C
199218.6 C-0.53 C
199319.2 C+0.07 C
199419.6 C+0.47 C
199520.1 C+0.92 C
199619.4 C+0.24 C
199719.5 C+0.36 C
200019.5 C+0.39 C
200119.4 C+0.28 C
200219.8 C+0.63 C
200320.0 C+0.83 C
200419.4 C+0.23 C
200519.6 C+0.46 C
200619.6 C+0.44 C
200719.4 C+0.30 C
200819.4 C+0.29 C
200919.5 C+0.39 C
201018.8 C-0.33 C
201119.7 C+0.61 C

The fitted trend in annual mean temperature here over 1975 to 2011 is 0.2 C (-0.1 to 0.6) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.4 F (-0.2 to 1.0) 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 La Concepcion
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (-0.1 to 0.6) per decade0.4 F (-0.2 to 1.0) per decade1975 to 201133Not clearly different from zero
Mean daily maximum0.3 C (-0.3 to 0.9) per decade0.6 F (-0.5 to 1.7) per decade1975 to 201133Not clearly different from zero
Mean daily minimum0.16 C (0.02 to 0.29) per decade0.28 F (0.03 to 0.53) per decade1975 to 201133Rise

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

1974 to 2011
Yearly extremes at La Concepcion: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)199834.4 C (93.9 F)38
Coldest night (TNn)1.7 C (35.1 F)19895.6 C (42.1 F)38
Wettest day (Rx1day)286.8 mm (11.3 in)1974101.4 mm (4.0 in)38
Wettest five days (Rx5day)603.2 mm (23.7 in)1974181.2 mm (7.1 in)38
Longest dry spell (CDD)44 days201121 days38

Hottest day (TXx)

Hottest day (TXx) at La Concepcion by year The hottest day of the year at La Concepcion, 1974 to 2011. The record is 40.0 C (104.0 F) in 1998, marked on the chart; the median year is 34.4 C (93.9 F). 253035401980199020002010Record: 40.0 C (104.0 F) in 1998
The hottest day of the year at La Concepcion, 1974 to 2011. The record is 40.0 C (104.0 F) in 1998, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at La Concepcion by year
YearHottest day (TXx)
197428.3 C (82.9 F)
197535.0 C (95.0 F)
197633.9 C (93.0 F)
197735.6 C (96.1 F)
197836.7 C (98.1 F)
197935.0 C (95.0 F)
198035.0 C (95.0 F)
198135.0 C (95.0 F)
198236.1 C (97.0 F)
198335.0 C (95.0 F)
198436.7 C (98.1 F)
198532.2 C (90.0 F)
198630.0 C (86.0 F)
198728.9 C (84.0 F)
198835.0 C (95.0 F)
198935.0 C (95.0 F)
199032.8 C (91.0 F)
199134.4 C (93.9 F)
199231.1 C (88.0 F)
199334.4 C (93.9 F)
199433.3 C (91.9 F)
199534.4 C (93.9 F)
199632.2 C (90.0 F)
199733.3 C (91.9 F)
199840.0 C (104.0 F)
199937.2 C (99.0 F)
200035.0 C (95.0 F)
200133.3 C (91.9 F)
200232.8 C (91.0 F)
200335.0 C (95.0 F)
200434.4 C (93.9 F)
200536.7 C (98.1 F)
200634.4 C (93.9 F)
200734.4 C (93.9 F)
200833.3 C (91.9 F)
200935.0 C (95.0 F)
201034.4 C (93.9 F)
201137.2 C (99.0 F)

Coldest night (TNn)

Coldest night (TNn) at La Concepcion by year The coldest night of the year at La Concepcion, 1974 to 2011. The record is 1.7 C (35.1 F) in 1989, marked on the chart; the median year is 5.6 C (42.1 F). 024681980199020002010Record: 1.7 C (35.1 F) in 1989
The coldest night of the year at La Concepcion, 1974 to 2011. The record is 1.7 C (35.1 F) in 1989, marked on the chart; the median year is 5.6 C (42.1 F).
Coldest night (TNn) at La Concepcion by year
YearColdest night (TNn)
19746.7 C (44.1 F)
19755.6 C (42.1 F)
19762.8 C (37.0 F)
19775.6 C (42.1 F)
19786.1 C (43.0 F)
19792.8 C (37.0 F)
19805.0 C (41.0 F)
19816.7 C (44.1 F)
19825.6 C (42.1 F)
19835.0 C (41.0 F)
19845.6 C (42.1 F)
19853.9 C (39.0 F)
19864.4 C (39.9 F)
19875.0 C (41.0 F)
19885.6 C (42.1 F)
19891.7 C (35.1 F)
19903.9 C (39.0 F)
19917.2 C (45.0 F)
19926.7 C (44.1 F)
19934.4 C (39.9 F)
19947.8 C (46.0 F)
19957.2 C (45.0 F)
19964.4 C (39.9 F)
19972.8 C (37.0 F)
19985.6 C (42.1 F)
19995.0 C (41.0 F)
20007.2 C (45.0 F)
20016.7 C (44.1 F)
20026.1 C (43.0 F)
20035.0 C (41.0 F)
20046.7 C (44.1 F)
20056.7 C (44.1 F)
20064.4 C (39.9 F)
20076.7 C (44.1 F)
20085.0 C (41.0 F)
20096.1 C (43.0 F)
20103.9 C (39.0 F)
20115.6 C (42.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at La Concepcion by year The wettest day of the year at La Concepcion, 1974 to 2011. The record is 286.8 mm (11.3 in) in 1974, marked on the chart; the median year is 101.4 mm (4.0 in). 01002003001980199020002010Record: 286.8 mm (11.3 in) in 1974
The wettest day of the year at La Concepcion, 1974 to 2011. The record is 286.8 mm (11.3 in) in 1974, marked on the chart; the median year is 101.4 mm (4.0 in).
Wettest day (Rx1day) at La Concepcion by year
YearWettest day (Rx1day)
1974286.8 mm (11.3 in)
1975100.3 mm (3.9 in)
1976117.1 mm (4.6 in)
197779.8 mm (3.1 in)
1978152.9 mm (6.0 in)
1979176.8 mm (7.0 in)
198071.9 mm (2.8 in)
198189.2 mm (3.5 in)
198263.0 mm (2.5 in)
1983104.6 mm (4.1 in)
1984114.6 mm (4.5 in)
198597.0 mm (3.8 in)
198662.5 mm (2.5 in)
198789.7 mm (3.5 in)
1988128.0 mm (5.0 in)
198952.8 mm (2.1 in)
199063.8 mm (2.5 in)
1991165.1 mm (6.5 in)
199286.9 mm (3.4 in)
1993137.4 mm (5.4 in)
1994131.8 mm (5.2 in)
1995104.4 mm (4.1 in)
199675.2 mm (3.0 in)
1997146.8 mm (5.8 in)
199878.0 mm (3.1 in)
1999125.0 mm (4.9 in)
2000102.6 mm (4.0 in)
200177.7 mm (3.1 in)
200277.0 mm (3.0 in)
2003140.5 mm (5.5 in)
200483.1 mm (3.3 in)
200579.8 mm (3.1 in)
200673.7 mm (2.9 in)
2007149.4 mm (5.9 in)
2008121.9 mm (4.8 in)
2009199.6 mm (7.9 in)
201085.3 mm (3.4 in)
2011136.9 mm (5.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at La Concepcion by year The wettest five days of the year at La Concepcion, 1974 to 2011. The record is 603.2 mm (23.7 in) in 1974, marked on the chart; the median year is 181.2 mm (7.1 in). 02004006008001980199020002010Record: 603.2 mm (23.7 in) in 1974
The wettest five days of the year at La Concepcion, 1974 to 2011. The record is 603.2 mm (23.7 in) in 1974, marked on the chart; the median year is 181.2 mm (7.1 in).
Wettest five days (Rx5day) at La Concepcion by year
YearWettest five days (Rx5day)
1974603.2 mm (23.7 in)
1975289.6 mm (11.4 in)
1976205.7 mm (8.1 in)
1977179.6 mm (7.1 in)
1978253.0 mm (10.0 in)
1979186.0 mm (7.3 in)
1980138.2 mm (5.4 in)
1981223.2 mm (8.8 in)
1982167.4 mm (6.6 in)
1983220.4 mm (8.7 in)
1984281.1 mm (11.1 in)
1985164.9 mm (6.5 in)
1986122.4 mm (4.8 in)
1987149.6 mm (5.9 in)
1988177.9 mm (7.0 in)
1989128.8 mm (5.1 in)
1990128.2 mm (5.0 in)
1991436.3 mm (17.2 in)
1992164.7 mm (6.5 in)
1993195.6 mm (7.7 in)
1994249.4 mm (9.8 in)
1995179.9 mm (7.1 in)
1996165.0 mm (6.5 in)
1997293.4 mm (11.6 in)
1998169.0 mm (6.7 in)
1999182.4 mm (7.2 in)
2000218.2 mm (8.6 in)
2001175.0 mm (6.9 in)
2002132.1 mm (5.2 in)
2003205.8 mm (8.1 in)
2004134.2 mm (5.3 in)
2005134.2 mm (5.3 in)
2006177.3 mm (7.0 in)
2007190.1 mm (7.5 in)
2008244.8 mm (9.6 in)
2009299.5 mm (11.8 in)
2010116.8 mm (4.6 in)
2011312.9 mm (12.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at La Concepcion by year The longest dry spell of the year at La Concepcion, 1974 to 2011. The record is 44 days in 2011, marked on the chart; the median year is 21 days. 10203040501980199020002010Record: 44 days in 2011
The longest dry spell of the year at La Concepcion, 1974 to 2011. The record is 44 days in 2011, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at La Concepcion by year
YearLongest dry spell (CDD)
197421 days
197526 days
197629 days
197715 days
197810 days
197923 days
198011 days
198120 days
198216 days
198337 days
198418 days
198516 days
198625 days
198726 days
198820 days
198921 days
199032 days
199121 days
199212 days
199318 days
199418 days
199523 days
199621 days
199728 days
199837 days
199930 days
200020 days
200122 days
200232 days
200322 days
200417 days
200518 days
200637 days
200719 days
200819 days
200927 days
201030 days
201144 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

36 years, 1975 to 2011

A day with at least 98.8 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 224.1 mm (8.8 in) of rain is expected about once in 100 years.

Rainfall return levels at La Concepcion: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years98.8 mm (3.9 in)
5 years131.1 mm (5.2 in)
10 years153.0 mm (6.0 in)
25 years181.2 mm (7.1 in)
50 years202.6 mm (8.0 in)Longer than the 36 years of record
100 years224.1 mm (8.8 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 1975 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: 199.6 mm (7.9 in) in 2009; 176.8 mm (7.0 in) in 1979; 165.1 mm (6.5 in) in 1991.

Download the Data

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