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Bolaos Weather Records (MXN00014023)

Record envelope, standing records and threshold days for Bolaos (MXN00014023), Mexico, with 66 years of record.

Key Facts for Bolaos

  • Bolaos (MXN00014023) is a weather station in Mexico at 21.82 latitude and -103.78 longitude, 963 m (3,159 ft) above sea level.
  • The station reports from 1947 to 2012, 66 years of record.
  • 1,464 records set at Bolaos still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Bolaos set a daily record high maximum temperature of 33.9 C (93.0 F) on 31 December 2011.

About the Station

  • Location: Mexico, 21.82 latitude, -103.78 longitude.
  • Elevation: 963 m (3,159 ft).
  • Period of record: 1947 to 2012, 66 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 Bolaos, with 2026 drawn through them The band shows the record high and record low for each calendar day at Bolaos. 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 Bolaos. 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 Bolaos, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan40.0 C (104.0 F)-1.1 C (30.0 F)n/an/a
Feb46.7 C (116.1 F)1.7 C (35.1 F)n/an/a
Mar48.3 C (118.9 F)4.4 C (39.9 F)n/an/a
Apr49.4 C (120.9 F)5.0 C (41.0 F)n/an/a
May48.9 C (120.0 F)5.0 C (41.0 F)n/an/a
Jun48.9 C (120.0 F)7.8 C (46.0 F)n/an/a
Jul46.1 C (115.0 F)12.8 C (55.0 F)n/an/a
Aug45.0 C (113.0 F)13.9 C (57.0 F)n/an/a
Sep45.6 C (114.1 F)7.2 C (45.0 F)n/an/a
Oct47.2 C (117.0 F)3.9 C (39.0 F)n/an/a
Nov45.0 C (113.0 F)0.6 C (33.1 F)n/an/a
Dec40.0 C (104.0 F)1.7 C (35.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Bolaos by the year they were set 1,464 records at Bolaos still stand. 1959 holds the most, with 116. 0501001501947: 1011948: 1101949: 981950: 261951: 341952: 171953: 161954: 181955: 181956: 261957: 841958: 951959: 1161960: 821961: 821962: 891963: 471964: 61965: 221966: 111967: 111968: 91969: 81970: 51971: 81972: 101973: 61974: 51975: 41976: 111977: 81978: 31979: 61980: 51981: 81982: 41983: 161984: 141985: 61986: 91987: 91988: 171989: 41990: 71991: 91992: 221993: 81994: 71995: 61996: 41997: 181998: 51999: 52000: 82001: 72002: 92003: 122004: 42005: 82006: 72007: 52008: 52009: 62010: 112011: 71947195419611968197519821989199620032010
1,464 records at Bolaos still stand. 1959 holds the most, with 116.
Standing records at Bolaos by the year they were set
Year setStanding records
1947101
1948110
194998
195026
195134
195217
195316
195418
195518
195626
195784
195895
1959116
196082
196182
196289
196347
19646
196522
196611
196711
19689
19698
19705
19718
197210
19736
19745
19754
197611
19778
19783
19796
19805
19818
19824
198316
198414
19856
19869
19879
198817
19894
19907
19919
199222
19938
19947
19956
19964
199718
19985
19995
20008
20017
20029
200312
20044
20058
20067
20075
20085
20096
201011
20117

All-Time Record Progression

2 new records
When Bolaos set new all-time records 2 all-time records were set at Bolaos between 16 January 1992 and 15 January 2010. Each dot is a new record. Record low maximum temperature16 January 1992: Record low maximum temperature 12.2 C (54.0 F)15 January 2010: Record low maximum temperature 11.7 C (53.1 F)1995200020052010
2 all-time records were set at Bolaos between 16 January 1992 and 15 January 2010. Each dot is a new record.
When Bolaos set new all-time records
DateKindDetail
1992-01-16Record low maximum temperatureRecord low maximum temperature 12.2 C (54.0 F)
2010-01-15Record low maximum temperatureRecord low maximum temperature 11.7 C (53.1 F)

Wettest Day of Each Month

Jun: 91.4 mm (3.6 in)
Record daily precipitation for each month at Bolaos The wettest day on record for each calendar month at Bolaos. The most was 91.4 mm (3.6 in) on 14 June 1947. 0255075100 Jan: 48.8 mm (1.9 in), 16 January 1992 Jan Feb: 74.7 mm (2.9 in), 2 February 2010 Feb Mar: 41.4 mm (1.6 in), 3 March 1968 Mar Apr: 27.4 mm (1.1 in), 2 April 1966 Apr May: 62.0 mm (2.4 in), 13 May 2009 May Jun: 91.4 mm (3.6 in), 14 June 1947 Jun Jul: 90.9 mm (3.6 in), 13 July 1953 Jul Aug: 66.3 mm (2.6 in), 7 August 1947 Aug Sep: 75.7 mm (3.0 in), 30 September 1987 Sep Oct: 46.0 mm (1.8 in), 17 October 1959 Oct Nov: 48.5 mm (1.9 in), 26 November 1982 Nov Dec: 27.7 mm (1.1 in), 2 December 1979 Dec
The wettest day on record for each calendar month at Bolaos. The most was 91.4 mm (3.6 in) on 14 June 1947.
Record daily precipitation for each month at Bolaos
MonthRecord daily precipitation (mm)Date
Jan48.8 mm (1.9 in)16 January 1992
Feb74.7 mm (2.9 in)2 February 2010
Mar41.4 mm (1.6 in)3 March 1968
Apr27.4 mm (1.1 in)2 April 1966
May62.0 mm (2.4 in)13 May 2009
Jun91.4 mm (3.6 in)14 June 1947
Jul90.9 mm (3.6 in)13 July 1953
Aug66.3 mm (2.6 in)7 August 1947
Sep75.7 mm (3.0 in)30 September 1987
Oct46.0 mm (1.8 in)17 October 1959
Nov48.5 mm (1.9 in)26 November 1982
Dec27.7 mm (1.1 in)2 December 1979

Period of Record Coverage

1947 to 2012
Days with data per year at Bolaos 66 years of record at Bolaos, 1947 to 2012. 7 years have data for under 90 percent of days and are left out of rankings: 1947, 1948, 1952, 1958, 1959, 1964, 2012. 1947: 217 of 365 days1948: 282 of 366 days1949: 334 of 365 days1950: 333 of 365 days1951: 355 of 365 days1952: 324 of 366 days1953: 359 of 365 days1954: 359 of 365 days1955: 354 of 365 days1956: 364 of 366 days1957: 336 of 365 days1958: 315 of 365 days1959: 325 of 365 days1960: 364 of 366 days1961: 365 of 365 days1962: 361 of 365 days1963: 334 of 365 days1964: 274 of 366 days1965: 364 of 365 days1966: 333 of 365 days1967: 361 of 365 days1968: 366 of 366 days1969: 364 of 365 days1970: 365 of 365 days1971: 364 of 365 days1972: 365 of 366 days1973: 365 of 365 days1974: 364 of 365 days1975: 363 of 365 days1976: 365 of 366 days1977: 364 of 365 days1978: 364 of 365 days1979: 364 of 365 days1980: 364 of 366 days1981: 334 of 365 days1982: 365 of 365 days1983: 363 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 364 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 335 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 363 of 365 days1996: 336 of 366 days1997: 365 of 365 days1998: 334 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 336 of 365 days2002: 357 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 364 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 334 of 366 days2009: 363 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 31 of 366 days1950196019701980199020002010
66 years of record at Bolaos, 1947 to 2012. 7 years have data for under 90 percent of days and are left out of rankings: 1947, 1948, 1952, 1958, 1959, 1964, 2012.
Days with data per year at Bolaos
YearDays with dataShare of yearComplete
194721759%No
194828277%No
194933492%Yes
195033391%Yes
195135597%Yes
195232489%No
195335998%Yes
195435998%Yes
195535497%Yes
195636499%Yes
195733692%Yes
195831586%No
195932589%No
196036499%Yes
1961365100%Yes
196236199%Yes
196333492%Yes
196427475%No
1965364100%Yes
196633391%Yes
196736199%Yes
1968366100%Yes
1969364100%Yes
1970365100%Yes
1971364100%Yes
1972365100%Yes
1973365100%Yes
1974364100%Yes
197536399%Yes
1976365100%Yes
1977364100%Yes
1978364100%Yes
1979364100%Yes
198036499%Yes
198133492%Yes
1982365100%Yes
198336399%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987364100%Yes
1988366100%Yes
1989364100%Yes
1990364100%Yes
1991365100%Yes
199233592%Yes
1993365100%Yes
1994365100%Yes
199536399%Yes
199633692%Yes
1997365100%Yes
199833492%Yes
1999365100%Yes
2000366100%Yes
200133692%Yes
200235798%Yes
2003365100%Yes
2004366100%Yes
2005364100%Yes
2006365100%Yes
2007364100%Yes
200833491%Yes
200936399%Yes
2010365100%Yes
2011365100%Yes
2012318%No

Latest Records

20
Latest records at Bolaos
DateStationRecordValueBeat old record byOld record stoodSignificance
31 December 2011Bolaos, MXdaily high max33.9 C (93.0 F)0.6 C (1.1 F)45 years20 of 100 (Routine)
26 December 2011Bolaos, MXdaily low min (Tie)4.4 C (39.9 F)tie36 years4 of 100 (Routine)
17 December 2011Bolaos, MXdaily high max (Tie)33.9 C (93.0 F)tie60 years6 of 100 (Routine)
12 October 2011Bolaos, MXdaily low max22.2 C (72.0 F)3.4 C (6.1 F)40 years27 of 100 (Routine)
18 September 2011Bolaos, MXdaily rain38.4 mm (1.5 in)8.2 mm (0.32 in)22 years20 of 100 (Routine)
10 September 2011Bolaos, MXdaily low min14.4 C (57.9 F)0.6 C (1.1 F)36 years20 of 100 (Routine)
10 September 2011Bolaos, MXdaily high max (Tie)38.9 C (102.0 F)tie61 years6 of 100 (Routine)
9 September 2011Bolaos, MXdaily low min (Tie)15.0 C (59.0 F)tie36 years4 of 100 (Routine)
8 September 2011Bolaos, MXdaily high max38.9 C (102.0 F)0.6 C (1.1 F)64 years26 of 100 (Routine)
3 September 2011Bolaos, MXdaily rain20.3 mm (0.8 in)0.7 mm (0.03 in)25 years13 of 100 (Routine)
21 June 2011Bolaos, MXdaily rain32.5 mm (1.3 in)0.7 mm (0.03 in)41 years18 of 100 (Routine)
3 May 2011Bolaos, MXdaily rain4.1 mm (0.16 in)4.1 mm (0.16 in)64 years20 of 100 (Routine)
13 March 2011Bolaos, MXdaily high max (Tie)40.0 C (104.0 F)tie48 years5 of 100 (Routine)
12 March 2011Bolaos, MXdaily high max (Tie)40.0 C (104.0 F)tie61 years6 of 100 (Routine)
26 January 2011Bolaos, MXdaily low min2.8 C (37.0 F)1.1 C (2.0 F)49 years23 of 100 (Routine)
25 January 2011Bolaos, MXdaily low min2.8 C (37.0 F)1.1 C (2.0 F)49 years23 of 100 (Routine)
24 January 2011Bolaos, MXdaily low min2.8 C (37.0 F)1.1 C (2.0 F)43 years21 of 100 (Routine)
21 January 2011Bolaos, MXdaily low min (Tie)5.0 C (41.0 F)tie52 years5 of 100 (Routine)
2 January 2011Bolaos, MXdaily low min (Tie)3.9 C (39.0 F)tie35 years4 of 100 (Routine)
1 January 2011Bolaos, MXdaily low min (Tie)2.8 C (37.0 F)tie35 years4 of 100 (Routine)

Climate Trend

39 complete years, 1949 to 2011
Annual mean temperature at Bolaos as warming stripes, 1949 to 2011 One stripe for each of 39 complete years at Bolaos, 1949 to 2011. Blue stripes are years cooler than the station's own mean of 24.5 C (76.1 F); red stripes are warmer. The coolest year was 1983, at 23.2 C (73.7 F), and the warmest was 1949, at 27.4 C (81.2 F). The strongest colour marks a difference of 2.9 C (5.2 F). 1949: 27.4 C, +2.8 C from the station mean1951: 25.7 C, +1.2 C from the station mean1953: 25.0 C, +0.5 C from the station mean1954: 25.8 C, +1.2 C from the station mean1955: 24.8 C, +0.3 C from the station mean1956: 25.1 C, +0.5 C from the station mean1965: 24.3 C, -0.2 C from the station mean1967: 23.9 C, -0.6 C from the station mean1968: 24.0 C, -0.5 C from the station mean1969: 24.6 C, +0.1 C from the station mean1970: 24.3 C, -0.2 C from the station mean1971: 24.3 C, -0.3 C from the station mean1972: 24.8 C, +0.3 C from the station mean1973: 24.3 C, -0.2 C from the station mean1974: 24.3 C, -0.2 C from the station mean1975: 24.1 C, -0.5 C from the station mean1976: 24.2 C, -0.3 C from the station mean1977: 24.2 C, -0.3 C from the station mean1978: 24.4 C, -0.1 C from the station mean1979: 24.4 C, -0.1 C from the station mean1980: 24.1 C, -0.4 C from the station mean1983: 23.2 C, -1.3 C from the station mean1984: 23.4 C, -1.1 C from the station mean1985: 24.0 C, -0.6 C from the station mean1987: 23.4 C, -1.1 C from the station mean1988: 23.9 C, -0.6 C from the station mean1989: 24.4 C, -0.1 C from the station mean1993: 24.5 C, -0.1 C from the station mean1994: 25.3 C, +0.8 C from the station mean1997: 24.4 C, -0.1 C from the station mean2000: 24.6 C, +0.1 C from the station mean2002: 24.6 C, 0.0 C from the station mean2004: 24.1 C, -0.4 C from the station mean2005: 25.0 C, +0.4 C from the station mean2006: 24.7 C, +0.2 C from the station mean2007: 24.7 C, +0.2 C from the station mean2009: 25.1 C, +0.5 C from the station mean2010: 23.6 C, -0.9 C from the station mean2011: 25.4 C, +0.9 C from the station mean1949196019701980199020002010
One stripe for each of 39 complete years at Bolaos, 1949 to 2011. Blue stripes are years cooler than the station's own mean of 24.5 C (76.1 F); red stripes are warmer. The coolest year was 1983, at 23.2 C (73.7 F), and the warmest was 1949, at 27.4 C (81.2 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Bolaos as warming stripes, 1949 to 2011
YearAnnual mean temperatureDifference from the station mean
194927.4 C+2.84 C
195125.7 C+1.21 C
195325.0 C+0.49 C
195425.8 C+1.24 C
195524.8 C+0.27 C
195625.1 C+0.54 C
196524.3 C-0.21 C
196723.9 C-0.61 C
196824.0 C-0.48 C
196924.6 C+0.11 C
197024.3 C-0.25 C
197124.3 C-0.27 C
197224.8 C+0.30 C
197324.3 C-0.19 C
197424.3 C-0.19 C
197524.1 C-0.47 C
197624.2 C-0.28 C
197724.2 C-0.29 C
197824.4 C-0.13 C
197924.4 C-0.11 C
198024.1 C-0.38 C
198323.2 C-1.34 C
198423.4 C-1.12 C
198524.0 C-0.56 C
198723.4 C-1.08 C
198823.9 C-0.62 C
198924.4 C-0.13 C
199324.5 C-0.07 C
199425.3 C+0.75 C
199724.4 C-0.15 C
200024.6 C+0.05 C
200224.6 C+0.04 C
200424.1 C-0.39 C
200525.0 C+0.44 C
200624.7 C+0.15 C
200724.7 C+0.22 C
200925.1 C+0.54 C
201023.6 C-0.90 C
201125.4 C+0.91 C

The fitted trend in annual mean temperature here over 1949 to 2011 is -0.12 C (-0.25 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.22 F (-0.45 to 0.02) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Bolaos
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.12 C (-0.25 to 0.01) per decade-0.22 F (-0.45 to 0.02) per decade1949 to 201139Not clearly different from zero
Mean daily maximum-0.1 C (-0.4 to 0.1) per decade-0.2 F (-0.7 to 0.2) per decade1949 to 201139Not clearly different from zero
Mean daily minimum-0.11 C (-0.18 to -0.03) per decade-0.2 F (-0.3 to -0.1) per decade1949 to 201139Fall

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

1947 to 2012
Yearly extremes at Bolaos: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)49.4 C (120.9 F)194842.8 C (109.0 F)66
Coldest night (TNn)-1.1 C (30.0 F)19624.4 C (39.9 F)66
Wettest day (Rx1day)91.4 mm (3.6 in)194745.4 mm (1.8 in)66
Wettest five days (Rx5day)136.1 mm (5.4 in)194880.8 mm (3.2 in)66
Longest dry spell (CDD)177 days1960108 days66

Hottest day (TXx)

Hottest day (TXx) at Bolaos by year The hottest day of the year at Bolaos, 1947 to 2012. The record is 49.4 C (120.9 F) in 1948, marked on the chart; the median year is 42.8 C (109.0 F). 35404550196019802000Record: 49.4 C (120.9 F) in 1948
The hottest day of the year at Bolaos, 1947 to 2012. The record is 49.4 C (120.9 F) in 1948, marked on the chart; the median year is 42.8 C (109.0 F).
Hottest day (TXx) at Bolaos by year
YearHottest day (TXx)
194747.2 C (117.0 F)
194849.4 C (120.9 F)
194948.9 C (120.0 F)
195045.6 C (114.1 F)
195145.6 C (114.1 F)
195245.0 C (113.0 F)
195345.0 C (113.0 F)
195444.4 C (111.9 F)
195542.2 C (108.0 F)
195643.3 C (109.9 F)
195743.9 C (111.0 F)
195846.7 C (116.1 F)
195940.0 C (104.0 F)
196045.0 C (113.0 F)
196140.0 C (104.0 F)
196243.3 C (109.9 F)
196345.0 C (113.0 F)
196441.7 C (107.1 F)
196546.7 C (116.1 F)
196642.2 C (108.0 F)
196742.8 C (109.0 F)
196842.2 C (108.0 F)
196945.0 C (113.0 F)
197041.7 C (107.1 F)
197142.2 C (108.0 F)
197241.7 C (107.1 F)
197342.8 C (109.0 F)
197441.7 C (107.1 F)
197541.1 C (106.0 F)
197642.2 C (108.0 F)
197740.6 C (105.1 F)
197842.2 C (108.0 F)
197941.7 C (107.1 F)
198041.7 C (107.1 F)
198140.0 C (104.0 F)
198243.3 C (109.9 F)
198342.8 C (109.0 F)
198440.6 C (105.1 F)
198543.3 C (109.9 F)
198642.2 C (108.0 F)
198740.0 C (104.0 F)
198842.8 C (109.0 F)
198944.4 C (111.9 F)
199042.2 C (108.0 F)
199142.2 C (108.0 F)
199242.2 C (108.0 F)
199343.3 C (109.9 F)
199442.2 C (108.0 F)
199542.8 C (109.0 F)
199642.8 C (109.0 F)
199741.7 C (107.1 F)
199842.2 C (108.0 F)
199943.9 C (111.0 F)
200043.9 C (111.0 F)
200143.3 C (109.9 F)
200243.3 C (109.9 F)
200343.9 C (111.0 F)
200441.7 C (107.1 F)
200544.4 C (111.9 F)
200642.8 C (109.0 F)
200743.3 C (109.9 F)
200845.0 C (113.0 F)
200943.9 C (111.0 F)
201045.0 C (113.0 F)
201144.4 C (111.9 F)
201235.0 C (95.0 F)

Coldest night (TNn)

Coldest night (TNn) at Bolaos by year The coldest night of the year at Bolaos, 1947 to 2012. The record is -1.1 C (30.0 F) in 1962, marked on the chart; the median year is 4.4 C (39.9 F). -2.502.557.5196019802000Record: -1.1 C (30.0 F) in 1962
The coldest night of the year at Bolaos, 1947 to 2012. The record is -1.1 C (30.0 F) in 1962, marked on the chart; the median year is 4.4 C (39.9 F).
Coldest night (TNn) at Bolaos by year
YearColdest night (TNn)
19472.8 C (37.0 F)
19486.7 C (44.1 F)
19496.1 C (43.0 F)
19506.7 C (44.1 F)
19513.9 C (39.0 F)
19527.2 C (45.0 F)
19534.4 C (39.9 F)
19546.1 C (43.0 F)
19555.0 C (41.0 F)
19562.2 C (36.0 F)
19576.7 C (44.1 F)
19583.9 C (39.0 F)
19595.0 C (41.0 F)
19602.8 C (37.0 F)
19610.0 C (32.0 F)
1962-1.1 C (30.0 F)
19633.9 C (39.0 F)
19646.7 C (44.1 F)
19652.8 C (37.0 F)
19666.7 C (44.1 F)
19673.3 C (37.9 F)
19683.9 C (39.0 F)
19695.6 C (42.1 F)
19705.0 C (41.0 F)
19714.4 C (39.9 F)
19724.4 C (39.9 F)
19734.4 C (39.9 F)
19745.0 C (41.0 F)
19753.9 C (39.0 F)
19762.8 C (37.0 F)
19775.0 C (41.0 F)
19785.6 C (42.1 F)
19794.4 C (39.9 F)
19805.6 C (42.1 F)
19815.0 C (41.0 F)
19826.1 C (43.0 F)
19833.9 C (39.0 F)
19844.4 C (39.9 F)
19855.0 C (41.0 F)
19863.3 C (37.9 F)
19870.6 C (33.1 F)
19882.8 C (37.0 F)
19895.0 C (41.0 F)
19905.6 C (42.1 F)
19913.3 C (37.9 F)
19926.1 C (43.0 F)
19935.6 C (42.1 F)
19946.7 C (44.1 F)
19955.0 C (41.0 F)
19964.4 C (39.9 F)
19972.8 C (37.0 F)
19983.9 C (39.0 F)
19993.3 C (37.9 F)
20005.6 C (42.1 F)
20013.9 C (39.0 F)
20022.2 C (36.0 F)
20031.7 C (35.1 F)
20045.0 C (41.0 F)
20055.0 C (41.0 F)
20061.7 C (35.1 F)
20075.6 C (42.1 F)
20084.4 C (39.9 F)
20093.9 C (39.0 F)
20103.3 C (37.9 F)
20112.8 C (37.0 F)
20126.1 C (43.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Bolaos by year The wettest day of the year at Bolaos, 1947 to 2012. The record is 91.4 mm (3.6 in) in 1947, marked on the chart; the median year is 45.4 mm (1.8 in). 0255075100196019802000Record: 91.4 mm (3.6 in) in 1947
The wettest day of the year at Bolaos, 1947 to 2012. The record is 91.4 mm (3.6 in) in 1947, marked on the chart; the median year is 45.4 mm (1.8 in).
Wettest day (Rx1day) at Bolaos by year
YearWettest day (Rx1day)
194791.4 mm (3.6 in)
194860.5 mm (2.4 in)
194946.5 mm (1.8 in)
195049.8 mm (2.0 in)
195145.0 mm (1.8 in)
195241.9 mm (1.6 in)
195390.9 mm (3.6 in)
195456.9 mm (2.2 in)
195545.0 mm (1.8 in)
195624.9 mm (1.0 in)
195746.0 mm (1.8 in)
195839.9 mm (1.6 in)
195946.0 mm (1.8 in)
196034.8 mm (1.4 in)
196124.9 mm (1.0 in)
196226.9 mm (1.1 in)
196321.8 mm (0.9 in)
196440.9 mm (1.6 in)
196554.4 mm (2.1 in)
196650.8 mm (2.0 in)
196755.4 mm (2.2 in)
196861.0 mm (2.4 in)
196949.8 mm (2.0 in)
197030.0 mm (1.2 in)
197145.0 mm (1.8 in)
197272.9 mm (2.9 in)
197342.4 mm (1.7 in)
197438.4 mm (1.5 in)
197541.4 mm (1.6 in)
197644.5 mm (1.8 in)
197764.8 mm (2.6 in)
197857.7 mm (2.3 in)
197975.7 mm (3.0 in)
198038.6 mm (1.5 in)
198145.7 mm (1.8 in)
198248.5 mm (1.9 in)
198367.8 mm (2.7 in)
198441.7 mm (1.6 in)
198564.3 mm (2.5 in)
198644.5 mm (1.8 in)
198775.7 mm (3.0 in)
198857.2 mm (2.3 in)
198927.2 mm (1.1 in)
199046.0 mm (1.8 in)
199155.9 mm (2.2 in)
199256.1 mm (2.2 in)
199354.1 mm (2.1 in)
199431.0 mm (1.2 in)
199548.0 mm (1.9 in)
199642.4 mm (1.7 in)
199735.3 mm (1.4 in)
199837.3 mm (1.5 in)
199931.8 mm (1.3 in)
200031.8 mm (1.3 in)
200147.8 mm (1.9 in)
200234.3 mm (1.4 in)
200349.0 mm (1.9 in)
200440.6 mm (1.6 in)
200550.8 mm (2.0 in)
200641.4 mm (1.6 in)
200731.0 mm (1.2 in)
200839.4 mm (1.6 in)
200962.0 mm (2.4 in)
201074.7 mm (2.9 in)
201138.4 mm (1.5 in)
20121.8 mm (0.07 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Bolaos by year The wettest five days of the year at Bolaos, 1947 to 2012. The record is 136.1 mm (5.4 in) in 1948, marked on the chart; the median year is 80.8 mm (3.2 in). 050100150196019802000Record: 136.1 mm (5.4 in) in 1948
The wettest five days of the year at Bolaos, 1947 to 2012. The record is 136.1 mm (5.4 in) in 1948, marked on the chart; the median year is 80.8 mm (3.2 in).
Wettest five days (Rx5day) at Bolaos by year
YearWettest five days (Rx5day)
1947113.9 mm (4.5 in)
1948136.1 mm (5.4 in)
194975.2 mm (3.0 in)
195085.3 mm (3.4 in)
195177.0 mm (3.0 in)
195280.3 mm (3.2 in)
1953104.9 mm (4.1 in)
195470.9 mm (2.8 in)
195595.6 mm (3.8 in)
195685.4 mm (3.4 in)
195770.9 mm (2.8 in)
195877.5 mm (3.1 in)
195953.6 mm (2.1 in)
196054.6 mm (2.1 in)
196133.5 mm (1.3 in)
196274.1 mm (2.9 in)
196345.5 mm (1.8 in)
196466.1 mm (2.6 in)
196596.6 mm (3.8 in)
196670.1 mm (2.8 in)
1967113.3 mm (4.5 in)
1968104.2 mm (4.1 in)
196981.3 mm (3.2 in)
197064.7 mm (2.5 in)
1971122.0 mm (4.8 in)
1972101.4 mm (4.0 in)
197388.4 mm (3.5 in)
197476.4 mm (3.0 in)
197586.9 mm (3.4 in)
1976106.0 mm (4.2 in)
197777.2 mm (3.0 in)
1978102.1 mm (4.0 in)
197990.7 mm (3.6 in)
198066.8 mm (2.6 in)
1981122.0 mm (4.8 in)
198276.5 mm (3.0 in)
1983124.3 mm (4.9 in)
1984118.5 mm (4.7 in)
198579.1 mm (3.1 in)
198672.8 mm (2.9 in)
1987131.6 mm (5.2 in)
198878.8 mm (3.1 in)
198956.2 mm (2.2 in)
1990109.2 mm (4.3 in)
1991120.2 mm (4.7 in)
199288.7 mm (3.5 in)
199390.7 mm (3.6 in)
199480.1 mm (3.2 in)
199591.2 mm (3.6 in)
199673.2 mm (2.9 in)
199772.4 mm (2.9 in)
199870.6 mm (2.8 in)
199990.7 mm (3.6 in)
200062.8 mm (2.5 in)
2001102.9 mm (4.1 in)
200265.8 mm (2.6 in)
2003136.1 mm (5.4 in)
200487.1 mm (3.4 in)
200583.3 mm (3.3 in)
200663.2 mm (2.5 in)
200761.1 mm (2.4 in)
200870.9 mm (2.8 in)
200992.8 mm (3.7 in)
2010126.5 mm (5.0 in)
201152.9 mm (2.1 in)
20121.8 mm (0.07 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Bolaos by year The longest dry spell of the year at Bolaos, 1947 to 2012. The record is 177 days in 1960, marked on the chart; the median year is 108 days. 050100150200196019802000Record: 177 days in 1960
The longest dry spell of the year at Bolaos, 1947 to 2012. The record is 177 days in 1960, marked on the chart; the median year is 108 days.
Longest dry spell (CDD) at Bolaos by year
YearLongest dry spell (CDD)
194790 days
194846 days
1949119 days
195088 days
195175 days
1952109 days
195390 days
1954127 days
1955161 days
1956175 days
1957168 days
195885 days
195990 days
1960177 days
1961154 days
1962159 days
1963157 days
196450 days
196568 days
196648 days
196770 days
196839 days
1969128 days
197099 days
1971129 days
1972143 days
197371 days
197483 days
1975123 days
197691 days
197795 days
1978111 days
1979110 days
198062 days
198143 days
1982161 days
198373 days
198495 days
198576 days
1986111 days
198779 days
198882 days
1989177 days
199078 days
1991123 days
199228 days
1993136 days
1994151 days
1995161 days
1996113 days
199758 days
1998111 days
1999163 days
2000151 days
200188 days
200258 days
2003108 days
200470 days
2005124 days
2006106 days
2007124 days
2008108 days
2009127 days
2010115 days
2011122 days
201230 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

63 years, 1947 to 2011

A day with at least 46.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 93.0 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Bolaos: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years46.0 mm (1.8 in)
5 years59.5 mm (2.3 in)
10 years68.1 mm (2.7 in)
25 years78.5 mm (3.1 in)
50 years85.9 mm (3.4 in)
100 years93.0 mm (3.7 in)Longer than the 63 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, 63 years of values from 1947 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: 91.4 mm (3.6 in) in 1947; 90.9 mm (3.6 in) in 1953; 75.7 mm (3.0 in) in 1979.

Download the Data

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