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Piedras Blancas Weather Records (MXN00016039)

Record envelope, standing records and threshold days for Piedras Blancas (MXN00016039), Mexico, with 52 years of record.

Key Facts for Piedras Blancas

  • Piedras Blancas (MXN00016039) is a weather station in Mexico at 19.23 latitude and -102.77 longitude, 419 m (1,374 ft) above sea level.
  • The station reports from 1961 to 2012, 52 years of record.
  • 1,464 records set at Piedras Blancas still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Piedras Blancas tied a daily record high maximum temperature of 38.9 C (102.0 F) on 30 September 2012.

About the Station

  • Location: Mexico, 19.23 latitude, -102.77 longitude.
  • Elevation: 419 m (1,374 ft).
  • Period of record: 1961 to 2012, 52 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 Piedras Blancas, with 2026 drawn through them The band shows the record high and record low for each calendar day at Piedras Blancas. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Piedras Blancas. 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 Piedras Blancas, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan39.4 C (102.9 F)6.7 C (44.1 F)n/an/a
Feb40.6 C (105.1 F)12.2 C (54.0 F)n/an/a
Mar45.0 C (113.0 F)11.1 C (52.0 F)n/an/a
Apr45.0 C (113.0 F)14.4 C (57.9 F)n/an/a
May46.1 C (115.0 F)14.4 C (57.9 F)n/an/a
Jun43.3 C (109.9 F)15.6 C (60.1 F)n/an/a
Jul41.7 C (107.1 F)18.3 C (64.9 F)n/an/a
Aug40.6 C (105.1 F)16.7 C (62.1 F)n/an/a
Sep40.0 C (104.0 F)17.2 C (63.0 F)n/an/a
Oct40.6 C (105.1 F)13.3 C (55.9 F)n/an/a
Nov40.0 C (104.0 F)10.6 C (51.1 F)n/an/a
Dec38.9 C (102.0 F)11.1 C (52.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Piedras Blancas by the year they were set 1,464 records at Piedras Blancas still stand. 1982 holds the most, with 71. 0204060801961: 471962: 171963: 271964: 251965: 611966: 451967: 281968: 341969: 191970: 231971: 121972: 201973: 231974: 181975: 211976: 491977: 111978: 291979: 431980: 551981: 231982: 711983: 271984: 81985: 151986: 301987: 381988: 381989: 151990: 181991: 221992: 341993: 81994: 91995: 131996: 121997: 451998: 111999: 212000: 132001: 352002: 552003: 352004: 392005: 382006: 312007: 382008: 182009: 282010: 312011: 132012: 25196119671973197919851991199720032009
1,464 records at Piedras Blancas still stand. 1982 holds the most, with 71.
Standing records at Piedras Blancas by the year they were set
Year setStanding records
196147
196217
196327
196425
196561
196645
196728
196834
196919
197023
197112
197220
197323
197418
197521
197649
197711
197829
197943
198055
198123
198271
198327
19848
198515
198630
198738
198838
198915
199018
199122
199234
19938
19949
199513
199612
199745
199811
199921
200013
200135
200255
200335
200439
200538
200631
200738
200818
200928
201031
201113
201225

All-Time Record Progression

1 new records
When Piedras Blancas set new all-time records 1 all-time records were set at Piedras Blancas between 16 January 1992 and 16 January 1992. Each dot is a new record. Record daily precipitation16 January 1992: Record daily precipitation 125.5 mm (4.9 in)
1 all-time records were set at Piedras Blancas between 16 January 1992 and 16 January 1992. Each dot is a new record.
When Piedras Blancas set new all-time records
DateKindDetail
1992-01-16Record daily precipitationRecord daily precipitation 125.5 mm (4.9 in)

Wettest Day of Each Month

Jan: 125.5 mm (4.9 in)
Record daily precipitation for each month at Piedras Blancas The wettest day on record for each calendar month at Piedras Blancas. The most was 125.5 mm (4.9 in) on 16 January 1992. 050100150 Jan: 125.5 mm (4.9 in), 16 January 1992 Jan Feb: 43.9 mm (1.7 in), 2 February 2010 Feb Mar: 39.9 mm (1.6 in), 4 March 1968 Mar Apr: 6.9 mm (0.27 in), 22 April 1990 Apr May: 74.9 mm (2.9 in), 13 May 1973 May Jun: 72.1 mm (2.8 in), 27 June 1991 Jun Jul: 117.9 mm (4.6 in), 6 July 1968 Jul Aug: 105.9 mm (4.2 in), 6 August 2011 Aug Sep: 79.0 mm (3.1 in), 26 September 2004 Sep Oct: 93.5 mm (3.7 in), 14 October 2006 Oct Nov: 54.6 mm (2.1 in), 18 November 1976 Nov Dec: 23.9 mm (0.9 in), 9 December 1964 Dec
The wettest day on record for each calendar month at Piedras Blancas. The most was 125.5 mm (4.9 in) on 16 January 1992.
Record daily precipitation for each month at Piedras Blancas
MonthRecord daily precipitation (mm)Date
Jan125.5 mm (4.9 in)16 January 1992
Feb43.9 mm (1.7 in)2 February 2010
Mar39.9 mm (1.6 in)4 March 1968
Apr6.9 mm (0.27 in)22 April 1990
May74.9 mm (2.9 in)13 May 1973
Jun72.1 mm (2.8 in)27 June 1991
Jul117.9 mm (4.6 in)6 July 1968
Aug105.9 mm (4.2 in)6 August 2011
Sep79.0 mm (3.1 in)26 September 2004
Oct93.5 mm (3.7 in)14 October 2006
Nov54.6 mm (2.1 in)18 November 1976
Dec23.9 mm (0.9 in)9 December 1964

Period of Record Coverage

1961 to 2012
Days with data per year at Piedras Blancas 52 years of record at Piedras Blancas, 1961 to 2012. 4 years have data for under 90 percent of days and are left out of rankings: 1971, 1984, 1995, 2012. 1961: 364 of 365 days1962: 365 of 365 days1963: 363 of 365 days1964: 337 of 366 days1965: 363 of 365 days1966: 365 of 365 days1967: 361 of 365 days1968: 364 of 366 days1969: 364 of 365 days1970: 365 of 365 days1971: 214 of 365 days1972: 365 of 366 days1973: 365 of 365 days1974: 364 of 365 days1975: 334 of 365 days1976: 331 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 364 of 365 days1980: 366 of 366 days1981: 361 of 365 days1982: 356 of 365 days1983: 362 of 365 days1984: 305 of 366 days1985: 365 of 365 days1986: 357 of 365 days1987: 365 of 365 days1988: 365 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 358 of 366 days1993: 365 of 365 days1994: 334 of 365 days1995: 273 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 363 of 365 days2002: 363 of 365 days2003: 365 of 365 days2004: 359 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 366 of 366 days2009: 364 of 365 days2010: 361 of 365 days2011: 365 of 365 days2012: 274 of 366 days19701980199020002010
52 years of record at Piedras Blancas, 1961 to 2012. 4 years have data for under 90 percent of days and are left out of rankings: 1971, 1984, 1995, 2012.
Days with data per year at Piedras Blancas
YearDays with dataShare of yearComplete
1961364100%Yes
1962365100%Yes
196336399%Yes
196433792%Yes
196536399%Yes
1966365100%Yes
196736199%Yes
196836499%Yes
1969364100%Yes
1970365100%Yes
197121459%No
1972365100%Yes
1973365100%Yes
1974364100%Yes
197533492%Yes
197633190%Yes
1977365100%Yes
1978365100%Yes
1979364100%Yes
1980366100%Yes
198136199%Yes
198235698%Yes
198336299%Yes
198430583%No
1985365100%Yes
198635798%Yes
1987365100%Yes
1988365100%Yes
1989365100%Yes
1990364100%Yes
1991365100%Yes
199235898%Yes
1993365100%Yes
199433492%Yes
199527375%No
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
200136399%Yes
200236399%Yes
2003365100%Yes
200435998%Yes
2005365100%Yes
2006365100%Yes
2007364100%Yes
2008366100%Yes
2009364100%Yes
201036199%Yes
2011365100%Yes
201227475%No

Latest Records

20
Latest records at Piedras Blancas
DateStationRecordValueBeat old record byOld record stoodSignificance
30 September 2012Piedras Blancas, MXdaily high max (Tie)38.9 C (102.0 F)tie30 years3 of 100 (Routine)
18 September 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie38 years4 of 100 (Routine)
17 September 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie35 years3 of 100 (Routine)
15 September 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie51 years5 of 100 (Routine)
14 September 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie41 years4 of 100 (Routine)
14 September 2012Piedras Blancas, MXdaily high max (Tie)38.9 C (102.0 F)tie8 years1 of 100 (Routine)
13 September 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie27 years3 of 100 (Routine)
10 September 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie31 years3 of 100 (Routine)
7 September 2012Piedras Blancas, MXdaily high max (Tie)38.3 C (100.9 F)tie3 years1 of 100 (Routine)
2 September 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie40 years4 of 100 (Routine)
31 August 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie42 years4 of 100 (Routine)
30 August 2012Piedras Blancas, MXdaily rain30.5 mm (1.2 in)4.6 mm (0.18 in)18 years13 of 100 (Routine)
29 August 2012Piedras Blancas, MXdaily high max38.9 C (102.0 F)0.6 C (1.1 F)10 years10 of 100 (Routine)
18 August 2012Piedras Blancas, MXdaily rain41.4 mm (1.6 in)9.6 mm (0.38 in)23 years17 of 100 (Routine)
16 August 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie50 years5 of 100 (Routine)
15 August 2012Piedras Blancas, MXdaily low min (Tie)20.0 C (68.0 F)tie25 years3 of 100 (Routine)
13 August 2012Piedras Blancas, MXdaily low max27.8 C (82.0 F)1.1 C (2.0 F)50 years24 of 100 (Routine)
9 August 2012Piedras Blancas, MXdaily high max40.0 C (104.0 F)0.6 C (1.1 F)8 years9 of 100 (Routine)
8 August 2012Piedras Blancas, MXdaily high max40.0 C (104.0 F)0.6 C (1.1 F)20 years13 of 100 (Routine)
21 June 2012Piedras Blancas, MXdaily low max28.3 C (82.9 F)1.1 C (2.0 F)1 year8 of 100 (Routine)

Climate Trend

41 complete years, 1961 to 2011
Annual mean temperature at Piedras Blancas as warming stripes, 1961 to 2011 One stripe for each of 41 complete years at Piedras Blancas, 1961 to 2011. Blue stripes are years cooler than the station's own mean of 28.0 C (82.5 F); red stripes are warmer. The coolest year was 1977, at 27.0 C (80.6 F), and the warmest was 2005, at 29.2 C (84.5 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1961: 28.2 C, +0.2 C from the station mean1962: 28.0 C, 0.0 C from the station mean1963: 28.1 C, 0.0 C from the station mean1965: 28.4 C, +0.3 C from the station mean1966: 27.8 C, -0.2 C from the station mean1967: 27.6 C, -0.4 C from the station mean1968: 27.3 C, -0.8 C from the station mean1969: 28.0 C, -0.1 C from the station mean1970: 27.4 C, -0.6 C from the station mean1972: 27.8 C, -0.2 C from the station mean1973: 27.4 C, -0.7 C from the station mean1974: 27.3 C, -0.7 C from the station mean1977: 27.0 C, -1.0 C from the station mean1978: 27.2 C, -0.8 C from the station mean1981: 27.5 C, -0.5 C from the station mean1983: 27.8 C, -0.2 C from the station mean1985: 28.5 C, +0.5 C from the station mean1986: 28.4 C, +0.4 C from the station mean1987: 28.7 C, +0.7 C from the station mean1988: 28.3 C, +0.2 C from the station mean1989: 28.2 C, +0.2 C from the station mean1990: 28.6 C, +0.5 C from the station mean1991: 28.4 C, +0.4 C from the station mean1992: 27.7 C, -0.4 C from the station mean1993: 28.3 C, +0.3 C from the station mean1996: 27.9 C, -0.1 C from the station mean1997: 28.5 C, +0.5 C from the station mean1998: 28.3 C, +0.2 C from the station mean1999: 28.0 C, 0.0 C from the station mean2000: 28.0 C, -0.1 C from the station mean2001: 28.2 C, +0.2 C from the station mean2002: 28.1 C, 0.0 C from the station mean2003: 27.9 C, -0.1 C from the station mean2004: 28.2 C, +0.2 C from the station mean2005: 29.2 C, +1.1 C from the station mean2006: 28.9 C, +0.9 C from the station mean2007: 28.7 C, +0.7 C from the station mean2008: 28.4 C, +0.3 C from the station mean2009: 28.4 C, +0.3 C from the station mean2010: 27.3 C, -0.8 C from the station mean2011: 28.0 C, -0.1 C from the station mean19611965197019751980198519901995200020052010
One stripe for each of 41 complete years at Piedras Blancas, 1961 to 2011. Blue stripes are years cooler than the station's own mean of 28.0 C (82.5 F); red stripes are warmer. The coolest year was 1977, at 27.0 C (80.6 F), and the warmest was 2005, at 29.2 C (84.5 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Piedras Blancas as warming stripes, 1961 to 2011
YearAnnual mean temperatureDifference from the station mean
196128.2 C+0.15 C
196228.0 C-0.05 C
196328.1 C+0.01 C
196528.4 C+0.33 C
196627.8 C-0.25 C
196727.6 C-0.45 C
196827.3 C-0.78 C
196928.0 C-0.07 C
197027.4 C-0.63 C
197227.8 C-0.20 C
197327.4 C-0.69 C
197427.3 C-0.72 C
197727.0 C-1.02 C
197827.2 C-0.84 C
198127.5 C-0.52 C
198327.8 C-0.21 C
198528.5 C+0.45 C
198628.4 C+0.37 C
198728.7 C+0.68 C
198828.3 C+0.21 C
198928.2 C+0.20 C
199028.6 C+0.54 C
199128.4 C+0.40 C
199227.7 C-0.38 C
199328.3 C+0.28 C
199627.9 C-0.13 C
199728.5 C+0.46 C
199828.3 C+0.21 C
199928.0 C+0.00 C
200028.0 C-0.09 C
200128.2 C+0.17 C
200228.1 C+0.02 C
200327.9 C-0.11 C
200428.2 C+0.16 C
200529.2 C+1.13 C
200628.9 C+0.86 C
200728.7 C+0.69 C
200828.4 C+0.31 C
200928.4 C+0.31 C
201027.3 C-0.76 C
201128.0 C-0.08 C

The annual mean temperature here has risen by 0.13 C (0.04 to 0.23) per decade over 1961 to 2011. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Piedras Blancas
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.13 C (0.04 to 0.23) per decade0.2 F (0.1 to 0.4) per decade1961 to 201141Rise
Mean daily maximum0.5 C (0.4 to 0.7) per decade0.9 F (0.7 to 1.2) per decade1961 to 201141Rise
Mean daily minimum-0.3 C (-0.4 to -0.2) per decade-0.5 F (-0.6 to -0.3) per decade1961 to 201141Fall

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 2012
Yearly extremes at Piedras Blancas: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.1 C (115.0 F)198742.8 C (109.0 F)52
Coldest night (TNn)6.7 C (44.1 F)198213.9 C (57.0 F)52
Wettest day (Rx1day)125.5 mm (4.9 in)199261.5 mm (2.4 in)52
Wettest five days (Rx5day)176.2 mm (6.9 in)1988101.2 mm (4.0 in)52
Longest dry spell (CDD)163 days1989108 days52

Hottest day (TXx)

Hottest day (TXx) at Piedras Blancas by year The hottest day of the year at Piedras Blancas, 1961 to 2012. The record is 46.1 C (115.0 F) in 1987, marked on the chart; the median year is 42.8 C (109.0 F). 404244464819701980199020002010Record: 46.1 C (115.0 F) in 1987
The hottest day of the year at Piedras Blancas, 1961 to 2012. The record is 46.1 C (115.0 F) in 1987, marked on the chart; the median year is 42.8 C (109.0 F).
Hottest day (TXx) at Piedras Blancas by year
YearHottest day (TXx)
196142.8 C (109.0 F)
196242.2 C (108.0 F)
196342.2 C (108.0 F)
196442.2 C (108.0 F)
196542.2 C (108.0 F)
196641.7 C (107.1 F)
196741.1 C (106.0 F)
196841.7 C (107.1 F)
196942.8 C (109.0 F)
197041.1 C (106.0 F)
197141.1 C (106.0 F)
197241.7 C (107.1 F)
197341.7 C (107.1 F)
197440.6 C (105.1 F)
197541.1 C (106.0 F)
197642.2 C (108.0 F)
197741.1 C (106.0 F)
197841.7 C (107.1 F)
197942.8 C (109.0 F)
198045.0 C (113.0 F)
198141.7 C (107.1 F)
198243.3 C (109.9 F)
198343.9 C (111.0 F)
198442.8 C (109.0 F)
198542.8 C (109.0 F)
198643.9 C (111.0 F)
198746.1 C (115.0 F)
198842.8 C (109.0 F)
198943.9 C (111.0 F)
199042.8 C (109.0 F)
199143.3 C (109.9 F)
199243.3 C (109.9 F)
199343.3 C (109.9 F)
199442.8 C (109.0 F)
199542.2 C (108.0 F)
199641.7 C (107.1 F)
199743.3 C (109.9 F)
199843.3 C (109.9 F)
199942.8 C (109.0 F)
200042.2 C (108.0 F)
200143.9 C (111.0 F)
200243.3 C (109.9 F)
200343.3 C (109.9 F)
200444.4 C (111.9 F)
200543.3 C (109.9 F)
200643.9 C (111.0 F)
200742.8 C (109.0 F)
200843.3 C (109.9 F)
200943.3 C (109.9 F)
201043.9 C (111.0 F)
201143.3 C (109.9 F)
201243.3 C (109.9 F)

Coldest night (TNn)

Coldest night (TNn) at Piedras Blancas by year The coldest night of the year at Piedras Blancas, 1961 to 2012. The record is 6.7 C (44.1 F) in 1982, marked on the chart; the median year is 13.9 C (57.0 F). 57.51012.51517.519701980199020002010Record: 6.7 C (44.1 F) in 1982
The coldest night of the year at Piedras Blancas, 1961 to 2012. The record is 6.7 C (44.1 F) in 1982, marked on the chart; the median year is 13.9 C (57.0 F).
Coldest night (TNn) at Piedras Blancas by year
YearColdest night (TNn)
196113.9 C (57.0 F)
196215.0 C (59.0 F)
196314.4 C (57.9 F)
196414.4 C (57.9 F)
196512.8 C (55.0 F)
196614.4 C (57.9 F)
196711.1 C (52.0 F)
196813.9 C (57.0 F)
196915.0 C (59.0 F)
197013.9 C (57.0 F)
197116.7 C (62.1 F)
197215.0 C (59.0 F)
197313.9 C (57.0 F)
197415.0 C (59.0 F)
197511.1 C (52.0 F)
197614.4 C (57.9 F)
197713.9 C (57.0 F)
197813.3 C (55.9 F)
197916.7 C (62.1 F)
198015.6 C (60.1 F)
198112.8 C (55.0 F)
19826.7 C (44.1 F)
198313.9 C (57.0 F)
198414.4 C (57.9 F)
198515.6 C (60.1 F)
198613.9 C (57.0 F)
198715.0 C (59.0 F)
198813.9 C (57.0 F)
198915.0 C (59.0 F)
199015.0 C (59.0 F)
199115.6 C (60.1 F)
199212.8 C (55.0 F)
199313.9 C (57.0 F)
199415.6 C (60.1 F)
199515.0 C (59.0 F)
199613.9 C (57.0 F)
199711.7 C (53.1 F)
199813.3 C (55.9 F)
199913.3 C (55.9 F)
200015.0 C (59.0 F)
200113.3 C (55.9 F)
200211.1 C (52.0 F)
200311.1 C (52.0 F)
200412.8 C (55.0 F)
200515.0 C (59.0 F)
200613.9 C (57.0 F)
200715.0 C (59.0 F)
200813.9 C (57.0 F)
200912.8 C (55.0 F)
201010.6 C (51.1 F)
201112.8 C (55.0 F)
201213.9 C (57.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Piedras Blancas by year The wettest day of the year at Piedras Blancas, 1961 to 2012. The record is 125.5 mm (4.9 in) in 1992, marked on the chart; the median year is 61.5 mm (2.4 in). 25507510012515019701980199020002010Record: 125.5 mm (4.9 in) in 1992
The wettest day of the year at Piedras Blancas, 1961 to 2012. The record is 125.5 mm (4.9 in) in 1992, marked on the chart; the median year is 61.5 mm (2.4 in).
Wettest day (Rx1day) at Piedras Blancas by year
YearWettest day (Rx1day)
196147.8 mm (1.9 in)
196261.5 mm (2.4 in)
196363.5 mm (2.5 in)
196432.8 mm (1.3 in)
196570.4 mm (2.8 in)
196675.9 mm (3.0 in)
196741.4 mm (1.6 in)
1968117.9 mm (4.6 in)
196961.0 mm (2.4 in)
197052.8 mm (2.1 in)
197150.8 mm (2.0 in)
197263.5 mm (2.5 in)
197374.9 mm (2.9 in)
197453.1 mm (2.1 in)
197546.0 mm (1.8 in)
197665.8 mm (2.6 in)
197778.0 mm (3.1 in)
197837.8 mm (1.5 in)
197952.6 mm (2.1 in)
198068.3 mm (2.7 in)
198167.3 mm (2.6 in)
198247.5 mm (1.9 in)
198355.4 mm (2.2 in)
198461.5 mm (2.4 in)
198545.7 mm (1.8 in)
198634.0 mm (1.3 in)
198770.4 mm (2.8 in)
1988102.9 mm (4.1 in)
198950.3 mm (2.0 in)
199062.5 mm (2.5 in)
199172.1 mm (2.8 in)
1992125.5 mm (4.9 in)
199368.1 mm (2.7 in)
199451.8 mm (2.0 in)
199591.9 mm (3.6 in)
199649.8 mm (2.0 in)
199732.8 mm (1.3 in)
199872.9 mm (2.9 in)
199981.8 mm (3.2 in)
200058.9 mm (2.3 in)
200127.9 mm (1.1 in)
200254.9 mm (2.2 in)
200363.0 mm (2.5 in)
200479.0 mm (3.1 in)
200562.0 mm (2.4 in)
200693.5 mm (3.7 in)
200757.9 mm (2.3 in)
200879.8 mm (3.1 in)
200944.5 mm (1.8 in)
201043.9 mm (1.7 in)
2011105.9 mm (4.2 in)
201241.4 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Piedras Blancas by year The wettest five days of the year at Piedras Blancas, 1961 to 2012. The record is 176.2 mm (6.9 in) in 1988, marked on the chart; the median year is 101.2 mm (4.0 in). 5010015020019701980199020002010Record: 176.2 mm (6.9 in) in 1988
The wettest five days of the year at Piedras Blancas, 1961 to 2012. The record is 176.2 mm (6.9 in) in 1988, marked on the chart; the median year is 101.2 mm (4.0 in).
Wettest five days (Rx5day) at Piedras Blancas by year
YearWettest five days (Rx5day)
196186.2 mm (3.4 in)
1962120.7 mm (4.8 in)
196387.7 mm (3.5 in)
196464.8 mm (2.6 in)
1965137.0 mm (5.4 in)
1966116.6 mm (4.6 in)
1967119.9 mm (4.7 in)
1968145.8 mm (5.7 in)
196974.2 mm (2.9 in)
197097.7 mm (3.8 in)
1971107.2 mm (4.2 in)
1972131.3 mm (5.2 in)
1973112.5 mm (4.4 in)
1974117.7 mm (4.6 in)
197579.3 mm (3.1 in)
1976151.6 mm (6.0 in)
197792.0 mm (3.6 in)
197863.4 mm (2.5 in)
197966.6 mm (2.6 in)
1980101.1 mm (4.0 in)
198199.3 mm (3.9 in)
198265.8 mm (2.6 in)
1983101.2 mm (4.0 in)
198498.6 mm (3.9 in)
1985109.7 mm (4.3 in)
198679.3 mm (3.1 in)
1987126.1 mm (5.0 in)
1988176.2 mm (6.9 in)
198969.4 mm (2.7 in)
199090.4 mm (3.6 in)
1991109.5 mm (4.3 in)
1992140.2 mm (5.5 in)
1993123.0 mm (4.8 in)
199466.1 mm (2.6 in)
1995114.8 mm (4.5 in)
1996112.7 mm (4.4 in)
1997100.2 mm (3.9 in)
1998148.6 mm (5.9 in)
1999131.9 mm (5.2 in)
200069.9 mm (2.8 in)
200151.9 mm (2.0 in)
200294.0 mm (3.7 in)
200387.4 mm (3.4 in)
2004115.6 mm (4.6 in)
2005103.2 mm (4.1 in)
2006167.3 mm (6.6 in)
200793.7 mm (3.7 in)
2008117.4 mm (4.6 in)
200994.0 mm (3.7 in)
201086.4 mm (3.4 in)
2011120.4 mm (4.7 in)
201268.0 mm (2.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Piedras Blancas by year The longest dry spell of the year at Piedras Blancas, 1961 to 2012. The record is 163 days in 1989, marked on the chart; the median year is 108 days. 5010015020019701980199020002010Record: 163 days in 1989
The longest dry spell of the year at Piedras Blancas, 1961 to 2012. The record is 163 days in 1989, marked on the chart; the median year is 108 days.
Longest dry spell (CDD) at Piedras Blancas by year
YearLongest dry spell (CDD)
1961103 days
1962141 days
1963103 days
1964104 days
196576 days
196661 days
1967121 days
196870 days
1969145 days
1970115 days
197152 days
197273 days
197354 days
1974138 days
1975100 days
1976122 days
197783 days
1978144 days
1979102 days
1980139 days
198187 days
1982136 days
198373 days
1984127 days
1985156 days
198694 days
1987102 days
1988102 days
1989163 days
199063 days
199176 days
199255 days
1993135 days
1994127 days
199567 days
1996136 days
199779 days
1998156 days
1999163 days
2000128 days
200178 days
200289 days
2003116 days
200480 days
2005112 days
2006131 days
2007120 days
2008140 days
2009138 days
2010114 days
2011160 days
2012103 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

48 years, 1961 to 2011

A day with at least 59.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 128.0 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Piedras Blancas: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years59.8 mm (2.4 in)
5 years78.6 mm (3.1 in)
10 years90.8 mm (3.6 in)
25 years106.0 mm (4.2 in)
50 years117.1 mm (4.6 in)Longer than the 48 years of record
100 years128.0 mm (5.0 in)Longer than the 48 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, 48 years of values from 1961 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: 125.5 mm (4.9 in) in 1992; 117.9 mm (4.6 in) in 1968; 105.9 mm (4.2 in) in 2011.

Download the Data

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