Built 2026-10-18 (18 October 2026)

El Rosario Weather Records (MXN00002022)

Record envelope, standing records and threshold days for El Rosario (MXN00002022), Mexico, with 60 years of record.

Key Facts for El Rosario

  • El Rosario (MXN00002022) is a weather station in Mexico at 30.05 latitude and -115.72 longitude, 40 m (131 ft) above sea level.
  • The station reports from 1953 to 2012, 60 years of record.
  • 1,464 records set at El Rosario still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • El Rosario tied a daily record low minimum temperature of 8.9 C (48.0 F) on 24 June 2012.

About the Station

  • Location: Mexico, 30.05 latitude, -115.72 longitude.
  • Elevation: 40 m (131 ft).
  • Period of record: 1953 to 2012, 60 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 El Rosario, with 2026 drawn through them The band shows the record high and record low for each calendar day at El Rosario. 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 El Rosario. 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 El Rosario, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.0 C (95.0 F)-6.1 C (21.0 F)n/an/a
Feb41.7 C (107.1 F)-5.0 C (23.0 F)n/an/a
Mar39.4 C (102.9 F)-2.2 C (28.0 F)n/an/a
Apr41.7 C (107.1 F)-1.1 C (30.0 F)n/an/a
May40.0 C (104.0 F)-1.1 C (30.0 F)n/an/a
Jun45.0 C (113.0 F)1.7 C (35.1 F)n/an/a
Jul42.8 C (109.0 F)1.7 C (35.1 F)n/an/a
Aug50.6 C (123.1 F)5.0 C (41.0 F)n/an/a
Sep45.0 C (113.0 F)2.8 C (37.0 F)n/an/a
Oct45.6 C (114.1 F)-1.1 C (30.0 F)n/an/a
Nov40.0 C (104.0 F)-8.3 C (17.1 F)n/an/a
Dec35.6 C (96.1 F)-6.1 C (21.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at El Rosario by the year they were set 1,464 records at El Rosario still stand. 1969 holds the most, with 109. 0501001501953: 41954: 491955: 601956: 331957: 151958: 171959: 171961: 281962: 141963: 451964: 231965: 121966: 311967: 991968: 451969: 1091970: 401971: 611972: 441973: 121974: 561975: 221976: 751977: 501978: 71979: 341980: 121981: 111982: 31983: 91984: 191985: 131986: 311987: 191988: 221989: 121990: 12000: 742001: 312002: 432003: 432004: 462005: 182006: 232007: 42008: 92009: 42010: 42011: 62012: 51953195819641969197419791984198920032008
1,464 records at El Rosario still stand. 1969 holds the most, with 109.
Standing records at El Rosario by the year they were set
Year setStanding records
19534
195449
195560
195633
195715
195817
195917
196128
196214
196345
196423
196512
196631
196799
196845
1969109
197040
197161
197244
197312
197456
197522
197675
197750
19787
197934
198012
198111
19823
19839
198419
198513
198631
198719
198822
198912
19901
200074
200131
200243
200343
200446
200518
200623
20074
20089
20094
20104
20116
20125

All-Time Record Progression

2 new records
When El Rosario set new all-time records 2 all-time records were set at El Rosario between 25 August 2006 and 26 August 2006. Each dot is a new record. Record high maximum temperature25 August 2006: Record high maximum temperature 47.8 C (118.0 F)26 August 2006: Record high maximum temperature 50.6 C (123.1 F)
2 all-time records were set at El Rosario between 25 August 2006 and 26 August 2006. Each dot is a new record.
When El Rosario set new all-time records
DateKindDetail
2006-08-25Record high maximum temperatureRecord high maximum temperature 47.8 C (118.0 F)
2006-08-26Record high maximum temperatureRecord high maximum temperature 50.6 C (123.1 F)

Wettest Day of Each Month

Jan: 94.0 mm (3.7 in)
Record daily precipitation for each month at El Rosario The wettest day on record for each calendar month at El Rosario. The most was 94.0 mm (3.7 in) on 16 January 1979. 0255075100 Jan: 94.0 mm (3.7 in), 16 January 1979 Jan Feb: 89.9 mm (3.5 in), 17 February 1980 Feb Mar: 71.9 mm (2.8 in), 1 March 1978 Mar Apr: 24.9 mm (1.0 in), 10 April 1967 Apr May: 20.8 mm (0.8 in), 11 May 1968 May Jun: 10.4 mm (0.4 in), 5 June 2006 Jun Jul: 19.8 mm (0.8 in), 28 July 1980 Jul Aug: 26.9 mm (1.1 in), 15 August 1977 Aug Sep: 69.9 mm (2.8 in), 9 September 1976 Sep Oct: 40.1 mm (1.6 in), 20 October 2004 Oct Nov: 50.8 mm (2.0 in), 17 November 1986 Nov Dec: 62.0 mm (2.4 in), 29 December 1978 Dec
The wettest day on record for each calendar month at El Rosario. The most was 94.0 mm (3.7 in) on 16 January 1979.
Record daily precipitation for each month at El Rosario
MonthRecord daily precipitation (mm)Date
Jan94.0 mm (3.7 in)16 January 1979
Feb89.9 mm (3.5 in)17 February 1980
Mar71.9 mm (2.8 in)1 March 1978
Apr24.9 mm (1.0 in)10 April 1967
May20.8 mm (0.8 in)11 May 1968
Jun10.4 mm (0.4 in)5 June 2006
Jul19.8 mm (0.8 in)28 July 1980
Aug26.9 mm (1.1 in)15 August 1977
Sep69.9 mm (2.8 in)9 September 1976
Oct40.1 mm (1.6 in)20 October 2004
Nov50.8 mm (2.0 in)17 November 1986
Dec62.0 mm (2.4 in)29 December 1978

Period of Record Coverage

1953 to 2012
Days with data per year at El Rosario 50 years of record at El Rosario, 1953 to 2012. 8 years have data for under 90 percent of days and are left out of rankings: 1953, 1961, 1964, 1967, 1987, 1990, 2005, 2012. 1953: 83 of 365 days1954: 359 of 365 days1955: 365 of 365 days1956: 365 of 366 days1957: 335 of 365 days1958: 364 of 365 days1959: 363 of 365 days1961: 231 of 365 days1962: 365 of 365 days1963: 350 of 365 days1964: 296 of 366 days1965: 347 of 365 days1966: 363 of 365 days1967: 293 of 365 days1968: 341 of 366 days1969: 337 of 365 days1970: 336 of 365 days1971: 334 of 365 days1972: 352 of 366 days1973: 364 of 365 days1974: 360 of 365 days1975: 365 of 365 days1976: 365 of 366 days1977: 353 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 365 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 211 of 365 days1988: 336 of 366 days1989: 358 of 365 days1990: 59 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 364 of 365 days2003: 345 of 365 days2004: 363 of 366 days2005: 317 of 365 days2006: 363 of 365 days2007: 365 of 365 days2008: 335 of 366 days2009: 365 of 365 days2010: 363 of 365 days2011: 365 of 365 days2012: 178 of 366 days19701980199020002010
50 years of record at El Rosario, 1953 to 2012. 8 years have data for under 90 percent of days and are left out of rankings: 1953, 1961, 1964, 1967, 1987, 1990, 2005, 2012.
Days with data per year at El Rosario
YearDays with dataShare of yearComplete
19538323%No
195435998%Yes
1955365100%Yes
1956365100%Yes
195733592%Yes
1958364100%Yes
195936399%Yes
196123163%No
1962365100%Yes
196335096%Yes
196429681%No
196534795%Yes
196636399%Yes
196729380%No
196834193%Yes
196933792%Yes
197033692%Yes
197133492%Yes
197235296%Yes
1973364100%Yes
197436099%Yes
1975365100%Yes
1976365100%Yes
197735397%Yes
1978365100%Yes
1979365100%Yes
1980365100%Yes
1981365100%Yes
1982365100%Yes
1983364100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
198721158%No
198833692%Yes
198935898%Yes
19905916%No
2000366100%Yes
2001365100%Yes
2002364100%Yes
200334595%Yes
200436399%Yes
200531787%No
200636399%Yes
2007365100%Yes
200833592%Yes
2009365100%Yes
201036399%Yes
2011365100%Yes
201217849%No

Latest Records

20
Latest records at El Rosario
DateStationRecordValueBeat old record byOld record stoodSignificance
24 June 2012El Rosario, MXdaily low min (Tie)8.9 C (48.0 F)tie43 years4 of 100 (Routine)
20 June 2012El Rosario, MXdaily low min (Tie)8.9 C (48.0 F)tie43 years4 of 100 (Routine)
8 June 2012El Rosario, MXdaily low min6.7 C (44.1 F)1.1 C (2.0 F)28 years17 of 100 (Routine)
25 April 2012El Rosario, MXdaily rain10.4 mm (0.4 in)9.6 mm (0.38 in)6 years20 of 100 (Routine)
16 April 2012El Rosario, MXdaily high max33.9 C (93.0 F)2.2 C (4.0 F)38 years21 of 100 (Routine)
13 April 2012El Rosario, MXdaily high max32.8 C (91.0 F)1.1 C (2.0 F)25 years15 of 100 (Routine)
28 March 2012El Rosario, MXdaily high max (Tie)31.7 C (89.1 F)tie38 years4 of 100 (Routine)
26 March 2012El Rosario, MXdaily high max (Tie)30.6 C (87.1 F)tie5 years1 of 100 (Routine)
25 March 2012El Rosario, MXdaily rain10.4 mm (0.4 in)2.5 mm (0.10 in)32 years17 of 100 (Routine)
25 March 2012El Rosario, MXdaily high max (Tie)33.9 C (93.0 F)tie5 years1 of 100 (Routine)
24 March 2012El Rosario, MXdaily high max35.0 C (95.0 F)1.1 C (2.0 F)37 years19 of 100 (Routine)
9 March 2012El Rosario, MXdaily high max31.7 C (89.1 F)0.6 C (1.1 F)12 years10 of 100 (Routine)
11 December 2011El Rosario, MXdaily rain40.4 mm (1.6 in)16.0 mm (0.6 in)4 years19 of 100 (Routine)
3 November 2011El Rosario, MXdaily rain8.4 mm (0.33 in)7.6 mm (0.30 in)9 years15 of 100 (Routine)
30 October 2011El Rosario, MXdaily high max40.0 C (104.0 F)6.1 C (11.0 F)34 years29 of 100 (Routine)
18 September 2011El Rosario, MXdaily rain10.4 mm (0.4 in)6.1 mm (0.24 in)25 years16 of 100 (Routine)
11 September 2011El Rosario, MXdaily low min (Tie)10.0 C (50.0 F)tie40 years4 of 100 (Routine)
25 August 2011El Rosario, MXdaily low min (Tie)8.9 C (48.0 F)tie41 years4 of 100 (Routine)
18 August 2011El Rosario, MXdaily low min10.0 C (50.0 F)0.6 C (1.1 F)41 years18 of 100 (Routine)
5 August 2011El Rosario, MXdaily low min (Tie)10.0 C (50.0 F)tie40 years4 of 100 (Routine)

Climate Trend

37 complete years, 1954 to 2011
Annual mean temperature at El Rosario as warming stripes, 1954 to 2011 One stripe for each of 37 complete years at El Rosario, 1954 to 2011. Blue stripes are years cooler than the station's own mean of 18.3 C (64.9 F); red stripes are warmer. The coolest year was 1969, at 14.7 C (58.4 F), and the warmest was 1976, at 22.4 C (72.2 F). The strongest colour marks a difference of 4.1 C (7.4 F). 1954: 16.6 C, -1.6 C from the station mean1955: 15.3 C, -3.0 C from the station mean1956: 16.7 C, -1.6 C from the station mean1958: 16.9 C, -1.4 C from the station mean1959: 17.6 C, -0.7 C from the station mean1962: 17.5 C, -0.7 C from the station mean1965: 18.5 C, +0.3 C from the station mean1966: 19.1 C, +0.8 C from the station mean1969: 14.7 C, -3.6 C from the station mean1970: 16.9 C, -1.3 C from the station mean1971: 15.6 C, -2.6 C from the station mean1972: 16.7 C, -1.6 C from the station mean1973: 17.4 C, -0.8 C from the station mean1974: 21.4 C, +3.2 C from the station mean1975: 20.6 C, +2.3 C from the station mean1976: 22.4 C, +4.1 C from the station mean1977: 21.5 C, +3.3 C from the station mean1978: 17.2 C, -1.0 C from the station mean1979: 16.9 C, -1.3 C from the station mean1980: 17.1 C, -1.2 C from the station mean1981: 17.8 C, -0.5 C from the station mean1982: 17.5 C, -0.7 C from the station mean1983: 18.1 C, -0.2 C from the station mean1984: 16.7 C, -1.6 C from the station mean1985: 16.4 C, -1.8 C from the station mean1986: 16.4 C, -1.9 C from the station mean1989: 18.6 C, +0.4 C from the station mean2000: 21.2 C, +3.0 C from the station mean2001: 20.2 C, +2.0 C from the station mean2002: 18.6 C, +0.3 C from the station mean2003: 17.2 C, -1.0 C from the station mean2004: 22.0 C, +3.7 C from the station mean2006: 20.5 C, +2.2 C from the station mean2007: 19.9 C, +1.7 C from the station mean2009: 19.1 C, +0.9 C from the station mean2010: 19.5 C, +1.3 C from the station mean2011: 19.2 C, +1.0 C from the station mean195419601965197019751980198519901995200020052010
One stripe for each of 37 complete years at El Rosario, 1954 to 2011. Blue stripes are years cooler than the station's own mean of 18.3 C (64.9 F); red stripes are warmer. The coolest year was 1969, at 14.7 C (58.4 F), and the warmest was 1976, at 22.4 C (72.2 F). The strongest colour marks a difference of 4.1 C (7.4 F).
Annual mean temperature at El Rosario as warming stripes, 1954 to 2011
YearAnnual mean temperatureDifference from the station mean
195416.6 C-1.62 C
195515.3 C-3.01 C
195616.7 C-1.58 C
195816.9 C-1.37 C
195917.6 C-0.69 C
196217.5 C-0.72 C
196518.5 C+0.28 C
196619.1 C+0.81 C
196914.7 C-3.58 C
197016.9 C-1.32 C
197115.6 C-2.65 C
197216.7 C-1.60 C
197317.4 C-0.82 C
197421.4 C+3.16 C
197520.6 C+2.32 C
197622.4 C+4.09 C
197721.5 C+3.25 C
197817.2 C-1.04 C
197916.9 C-1.33 C
198017.1 C-1.20 C
198117.8 C-0.48 C
198217.5 C-0.72 C
198318.1 C-0.17 C
198416.7 C-1.58 C
198516.4 C-1.83 C
198616.4 C-1.91 C
198918.6 C+0.36 C
200021.2 C+2.96 C
200120.2 C+1.97 C
200218.6 C+0.31 C
200317.2 C-1.02 C
200422.0 C+3.72 C
200620.5 C+2.22 C
200719.9 C+1.67 C
200919.1 C+0.85 C
201019.5 C+1.25 C
201119.2 C+0.95 C

The annual mean temperature here has risen by 0.5 C (0.2 to 0.9) per decade over 1954 to 2011. In Fahrenheit: 1.0 F (0.4 to 1.6) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at El Rosario
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.5 C (0.2 to 0.9) per decade1.0 F (0.4 to 1.6) per decade1954 to 201137Rise
Mean daily maximum1.0 C (0.6 to 1.5) per decade1.8 F (1.0 to 2.6) per decade1954 to 201137Rise
Mean daily minimum0.1 C (-0.3 to 0.5) per decade0.1 F (-0.6 to 0.9) per decade1954 to 201137Not 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

1953 to 2012
Yearly extremes at El Rosario: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)50.6 C (123.1 F)200638.9 C (102.0 F)50
Coldest night (TNn)-8.3 C (17.1 F)19610.6 C (33.1 F)50
Wettest day (Rx1day)94.0 mm (3.7 in)197927.4 mm (1.1 in)50
Wettest five days (Rx5day)262.2 mm (10.3 in)198046.7 mm (1.8 in)50
Longest dry spell (CDD)347 days1955157 days50

Hottest day (TXx)

Hottest day (TXx) at El Rosario by year The hottest day of the year at El Rosario, 1953 to 2012. The record is 50.6 C (123.1 F) in 2006, marked on the chart; the median year is 38.9 C (102.0 F). 2030405060196019701980199020002010Record: 50.6 C (123.1 F) in 2006
The hottest day of the year at El Rosario, 1953 to 2012. The record is 50.6 C (123.1 F) in 2006, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at El Rosario by year
YearHottest day (TXx)
195332.8 C (91.0 F)
195442.8 C (109.0 F)
195538.9 C (102.0 F)
195635.0 C (95.0 F)
195738.9 C (102.0 F)
195838.9 C (102.0 F)
195933.9 C (93.0 F)
196130.0 C (86.0 F)
196235.0 C (95.0 F)
196342.8 C (109.0 F)
196435.0 C (95.0 F)
196535.6 C (96.1 F)
196630.6 C (87.1 F)
196738.9 C (102.0 F)
196835.0 C (95.0 F)
196935.6 C (96.1 F)
197035.0 C (95.0 F)
197135.0 C (95.0 F)
197240.6 C (105.1 F)
197337.8 C (100.0 F)
197445.6 C (114.1 F)
197540.6 C (105.1 F)
197645.0 C (113.0 F)
197743.9 C (111.0 F)
197838.9 C (102.0 F)
197945.0 C (113.0 F)
198038.9 C (102.0 F)
198135.6 C (96.1 F)
198238.9 C (102.0 F)
198340.0 C (104.0 F)
198435.6 C (96.1 F)
198538.9 C (102.0 F)
198633.9 C (93.0 F)
198733.9 C (93.0 F)
198831.7 C (89.1 F)
198941.7 C (107.1 F)
199028.9 C (84.0 F)
200045.0 C (113.0 F)
200139.4 C (102.9 F)
200241.7 C (107.1 F)
200341.7 C (107.1 F)
200440.0 C (104.0 F)
200540.0 C (104.0 F)
200650.6 C (123.1 F)
200735.6 C (96.1 F)
200837.8 C (100.0 F)
200940.6 C (105.1 F)
201036.7 C (98.1 F)
201140.0 C (104.0 F)
201235.0 C (95.0 F)

Coldest night (TNn)

Coldest night (TNn) at El Rosario by year The coldest night of the year at El Rosario, 1953 to 2012. The record is -8.3 C (17.1 F) in 1961, marked on the chart; the median year is 0.6 C (33.1 F). -10-50510196019701980199020002010Record: -8.3 C (17.1 F) in 1961
The coldest night of the year at El Rosario, 1953 to 2012. The record is -8.3 C (17.1 F) in 1961, marked on the chart; the median year is 0.6 C (33.1 F).
Coldest night (TNn) at El Rosario by year
YearColdest night (TNn)
19530.0 C (32.0 F)
1954-4.4 C (24.1 F)
1955-4.4 C (24.1 F)
1956-4.4 C (24.1 F)
19570.0 C (32.0 F)
1958-1.1 C (30.0 F)
19590.0 C (32.0 F)
1961-8.3 C (17.1 F)
19621.7 C (35.1 F)
19636.7 C (44.1 F)
19647.2 C (45.0 F)
19652.8 C (37.0 F)
19665.0 C (41.0 F)
19671.7 C (35.1 F)
1968-6.1 C (21.0 F)
1969-3.3 C (26.1 F)
19700.0 C (32.0 F)
1971-2.2 C (28.0 F)
1972-5.0 C (23.0 F)
19730.6 C (33.1 F)
19740.0 C (32.0 F)
19755.0 C (41.0 F)
19763.9 C (39.0 F)
19772.8 C (37.0 F)
19780.0 C (32.0 F)
19791.7 C (35.1 F)
19801.7 C (35.1 F)
19812.8 C (37.0 F)
19820.0 C (32.0 F)
19830.0 C (32.0 F)
19841.7 C (35.1 F)
19850.0 C (32.0 F)
19863.9 C (39.0 F)
19873.9 C (39.0 F)
19882.8 C (37.0 F)
19890.0 C (32.0 F)
19900.0 C (32.0 F)
20001.7 C (35.1 F)
20010.0 C (32.0 F)
20020.6 C (33.1 F)
2003-2.2 C (28.0 F)
20041.7 C (35.1 F)
20053.9 C (39.0 F)
20062.8 C (37.0 F)
20070.0 C (32.0 F)
20083.9 C (39.0 F)
20093.9 C (39.0 F)
20103.9 C (39.0 F)
20110.6 C (33.1 F)
20126.7 C (44.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at El Rosario by year The wettest day of the year at El Rosario, 1953 to 2012. The record is 94.0 mm (3.7 in) in 1979, marked on the chart; the median year is 27.4 mm (1.1 in). 0255075100196019701980199020002010Record: 94.0 mm (3.7 in) in 1979
The wettest day of the year at El Rosario, 1953 to 2012. The record is 94.0 mm (3.7 in) in 1979, marked on the chart; the median year is 27.4 mm (1.1 in).
Wettest day (Rx1day) at El Rosario by year
YearWettest day (Rx1day)
19535.6 mm (0.22 in)
195426.9 mm (1.1 in)
195511.9 mm (0.5 in)
19563.8 mm (0.15 in)
195732.8 mm (1.3 in)
195824.9 mm (1.0 in)
19599.9 mm (0.39 in)
196147.0 mm (1.9 in)
196222.9 mm (0.9 in)
196324.9 mm (1.0 in)
19644.8 mm (0.19 in)
196519.8 mm (0.8 in)
196629.0 mm (1.1 in)
196724.9 mm (1.0 in)
196820.8 mm (0.8 in)
196931.8 mm (1.3 in)
197024.9 mm (1.0 in)
197110.4 mm (0.4 in)
197230.0 mm (1.2 in)
197317.8 mm (0.7 in)
197424.9 mm (1.0 in)
19758.9 mm (0.35 in)
197669.9 mm (2.8 in)
197726.9 mm (1.1 in)
197871.9 mm (2.8 in)
197994.0 mm (3.7 in)
198089.9 mm (3.5 in)
198122.9 mm (0.9 in)
198227.9 mm (1.1 in)
198326.9 mm (1.1 in)
198445.5 mm (1.8 in)
198540.4 mm (1.6 in)
198650.8 mm (2.0 in)
198718.5 mm (0.7 in)
198840.9 mm (1.6 in)
198928.7 mm (1.1 in)
199015.7 mm (0.6 in)
200040.4 mm (1.6 in)
200140.6 mm (1.6 in)
200230.7 mm (1.2 in)
200347.0 mm (1.9 in)
200465.3 mm (2.6 in)
200539.9 mm (1.6 in)
200615.5 mm (0.6 in)
200760.7 mm (2.4 in)
200845.5 mm (1.8 in)
200924.9 mm (1.0 in)
201046.5 mm (1.8 in)
201140.4 mm (1.6 in)
201220.1 mm (0.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at El Rosario by year The wettest five days of the year at El Rosario, 1953 to 2012. The record is 262.2 mm (10.3 in) in 1980, marked on the chart; the median year is 46.7 mm (1.8 in). 0100200300196019701980199020002010Record: 262.2 mm (10.3 in) in 1980
The wettest five days of the year at El Rosario, 1953 to 2012. The record is 262.2 mm (10.3 in) in 1980, marked on the chart; the median year is 46.7 mm (1.8 in).
Wettest five days (Rx5day) at El Rosario by year
YearWettest five days (Rx5day)
19536.4 mm (0.25 in)
195460.2 mm (2.4 in)
195533.7 mm (1.3 in)
19563.8 mm (0.15 in)
195732.8 mm (1.3 in)
195834.8 mm (1.4 in)
195918.4 mm (0.7 in)
196169.6 mm (2.7 in)
196233.3 mm (1.3 in)
196329.7 mm (1.2 in)
196410.4 mm (0.4 in)
196532.1 mm (1.3 in)
196697.3 mm (3.8 in)
196732.8 mm (1.3 in)
196837.6 mm (1.5 in)
196934.4 mm (1.4 in)
197026.8 mm (1.1 in)
197118.6 mm (0.7 in)
197235.6 mm (1.4 in)
197327.5 mm (1.1 in)
197446.7 mm (1.8 in)
197546.7 mm (1.8 in)
197678.5 mm (3.1 in)
197755.6 mm (2.2 in)
1978127.6 mm (5.0 in)
1979184.7 mm (7.3 in)
1980262.2 mm (10.3 in)
198160.5 mm (2.4 in)
198250.5 mm (2.0 in)
198377.3 mm (3.0 in)
198491.2 mm (3.6 in)
198550.3 mm (2.0 in)
198650.8 mm (2.0 in)
198738.3 mm (1.5 in)
198840.9 mm (1.6 in)
198948.0 mm (1.9 in)
199048.0 mm (1.9 in)
200058.5 mm (2.3 in)
200180.3 mm (3.2 in)
200230.7 mm (1.2 in)
200369.9 mm (2.8 in)
200495.8 mm (3.8 in)
200568.1 mm (2.7 in)
200615.5 mm (0.6 in)
2007108.7 mm (4.3 in)
200887.9 mm (3.5 in)
200945.2 mm (1.8 in)
2010101.6 mm (4.0 in)
201140.4 mm (1.6 in)
201220.1 mm (0.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at El Rosario by year The longest dry spell of the year at El Rosario, 1953 to 2012. The record is 347 days in 1955, marked on the chart; the median year is 157 days. 0100200300400196019701980199020002010Record: 347 days in 1955
The longest dry spell of the year at El Rosario, 1953 to 2012. The record is 347 days in 1955, marked on the chart; the median year is 157 days.
Longest dry spell (CDD) at El Rosario by year
YearLongest dry spell (CDD)
195367 days
1954243 days
1955347 days
1956339 days
1957166 days
1958185 days
1959174 days
1961125 days
1962187 days
1963112 days
1964100 days
196582 days
1966170 days
1967111 days
1968129 days
1969100 days
197089 days
1971121 days
1972100 days
1973147 days
1974209 days
1975223 days
1976117 days
197794 days
1978127 days
1979175 days
1980128 days
1981237 days
1982182 days
1983108 days
198498 days
1985173 days
1986140 days
1987168 days
1988145 days
1989177 days
199029 days
2000207 days
2001132 days
2002175 days
200356 days
2004231 days
2005208 days
2006195 days
2007232 days
2008166 days
2009241 days
2010181 days
2011127 days
201266 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

43 years, 1954 to 2011

A day with at least 30.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 107.1 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at El Rosario: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years30.8 mm (1.2 in)
5 years48.6 mm (1.9 in)
10 years61.3 mm (2.4 in)
25 years78.7 mm (3.1 in)
50 years92.5 mm (3.6 in)Longer than the 43 years of record
100 years107.1 mm (4.2 in)Longer than the 43 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, 43 years of values from 1954 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: 94.0 mm (3.7 in) in 1979; 89.9 mm (3.5 in) in 1980; 71.9 mm (2.8 in) in 1978.

Download the Data

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