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Jolalpan Weather Records (MXN00021050)

Record envelope, standing records and threshold days for Jolalpan (MXN00021050), Mexico, with 66 years of record.

Key Facts for Jolalpan

  • Jolalpan (MXN00021050) is a weather station in Mexico at 18.32 latitude and -98.82 longitude, 904 m (2,965 ft) above sea level.
  • The station reports from 1944 to 2009, 66 years of record.
  • 1,464 records set at Jolalpan still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Jolalpan tied a daily record low maximum temperature of 30.0 C (86.0 F) on 30 December 2009.

About the Station

  • Location: Mexico, 18.32 latitude, -98.82 longitude.
  • Elevation: 904 m (2,965 ft).
  • Period of record: 1944 to 2009, 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 Jolalpan, with 2026 drawn through them The band shows the record high and record low for each calendar day at Jolalpan. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Jolalpan. 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 Jolalpan, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan39.4 C (102.9 F)-1.1 C (30.0 F)n/an/a
Feb40.6 C (105.1 F)1.1 C (34.0 F)n/an/a
Mar43.9 C (111.0 F)6.7 C (44.1 F)n/an/a
Apr47.8 C (118.0 F)8.3 C (46.9 F)n/an/a
May43.3 C (109.9 F)10.6 C (51.1 F)n/an/a
Jun42.8 C (109.0 F)10.0 C (50.0 F)n/an/a
Jul40.0 C (104.0 F)10.0 C (50.0 F)n/an/a
Aug40.0 C (104.0 F)8.9 C (48.0 F)n/an/a
Sep42.2 C (108.0 F)8.9 C (48.0 F)n/an/a
Oct44.4 C (111.9 F)5.0 C (41.0 F)n/an/a
Nov40.6 C (105.1 F)0.6 C (33.1 F)n/an/a
Dec39.4 C (102.9 F)1.1 C (34.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Jolalpan by the year they were set 1,464 records at Jolalpan still stand. 1989 holds the most, with 76. 0204060801945: 251946: 611947: 371948: 141949: 171950: 301951: 401952: 281953: 261954: 231955: 311956: 371957: 311958: 391959: 211960: 351961: 381962: 301963: 201964: 191965: 201966: 411967: 331968: 341969: 641970: 611971: 171972: 221973: 211974: 201975: 221976: 241977: 441978: 221979: 371980: 291981: 191982: 291983: 251984: 201985: 221986: 91987: 121988: 201989: 761990: 21991: 61992: 42007: 352008: 352009: 37194519511957196319691975198119872007
1,464 records at Jolalpan still stand. 1989 holds the most, with 76.
Standing records at Jolalpan by the year they were set
Year setStanding records
194525
194661
194737
194814
194917
195030
195140
195228
195326
195423
195531
195637
195731
195839
195921
196035
196138
196230
196320
196419
196520
196641
196733
196834
196964
197061
197117
197222
197321
197420
197522
197624
197744
197822
197937
198029
198119
198229
198325
198420
198522
19869
198712
198820
198976
19902
19916
19924
200735
200835
200937

All-Time Record Progression

2 new records
When Jolalpan set new all-time records 2 all-time records were set at Jolalpan between 2 May 1981 and 7 May 1985. Each dot is a new record. Record high minimum temperature2 May 1981: Record high minimum temperature 25.0 C (77.0 F)7 May 1985: Record high minimum temperature 26.7 C (80.1 F)1985
2 all-time records were set at Jolalpan between 2 May 1981 and 7 May 1985. Each dot is a new record.
When Jolalpan set new all-time records
DateKindDetail
1981-05-02Record high minimum temperatureRecord high minimum temperature 25.0 C (77.0 F)
1985-05-07Record high minimum temperatureRecord high minimum temperature 26.7 C (80.1 F)

Wettest Day of Each Month

May: 159.8 mm (6.3 in)
Record daily precipitation for each month at Jolalpan The wettest day on record for each calendar month at Jolalpan. The most was 159.8 mm (6.3 in) on 23 May 1954. 050100150200 Jan: 35.6 mm (1.4 in), 19 January 1958 Jan Feb: 11.9 mm (0.5 in), 23 February 1981 Feb Mar: 10.9 mm (0.4 in), 16 March 1978 Mar Apr: 41.4 mm (1.6 in), 21 April 1972 Apr May: 159.8 mm (6.3 in), 23 May 1954 May Jun: 115.8 mm (4.6 in), 6 June 1955 Jun Jul: 94.5 mm (3.7 in), 6 July 2008 Jul Aug: 99.8 mm (3.9 in), 8 August 1957 Aug Sep: 106.7 mm (4.2 in), 27 September 1952 Sep Oct: 113.3 mm (4.5 in), 6 October 1982 Oct Nov: 54.4 mm (2.1 in), 1 November 1953 Nov Dec: 9.9 mm (0.39 in), 6 December 1968 Dec
The wettest day on record for each calendar month at Jolalpan. The most was 159.8 mm (6.3 in) on 23 May 1954.
Record daily precipitation for each month at Jolalpan
MonthRecord daily precipitation (mm)Date
Jan35.6 mm (1.4 in)19 January 1958
Feb11.9 mm (0.5 in)23 February 1981
Mar10.9 mm (0.4 in)16 March 1978
Apr41.4 mm (1.6 in)21 April 1972
May159.8 mm (6.3 in)23 May 1954
Jun115.8 mm (4.6 in)6 June 1955
Jul94.5 mm (3.7 in)6 July 2008
Aug99.8 mm (3.9 in)8 August 1957
Sep106.7 mm (4.2 in)27 September 1952
Oct113.3 mm (4.5 in)6 October 1982
Nov54.4 mm (2.1 in)1 November 1953
Dec9.9 mm (0.39 in)6 December 1968

Period of Record Coverage

1945 to 2009
Days with data per year at Jolalpan 51 years of record at Jolalpan, 1945 to 2009. 7 years have data for under 90 percent of days and are left out of rankings: 1945, 1948, 1988, 1990, 1992, 2007, 2008. 1945: 138 of 365 days1946: 363 of 365 days1947: 365 of 365 days1948: 306 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 365 of 366 days1953: 364 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 364 of 365 days1958: 363 of 365 days1959: 362 of 365 days1960: 365 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 363 of 365 days1964: 365 of 366 days1965: 363 of 365 days1966: 364 of 365 days1967: 359 of 365 days1968: 364 of 366 days1969: 359 of 365 days1970: 362 of 365 days1971: 364 of 365 days1972: 363 of 366 days1973: 361 of 365 days1974: 365 of 365 days1975: 335 of 365 days1976: 363 of 366 days1977: 364 of 365 days1978: 364 of 365 days1979: 364 of 365 days1980: 365 of 366 days1981: 333 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 364 of 366 days1985: 364 of 365 days1986: 365 of 365 days1987: 364 of 365 days1988: 301 of 366 days1989: 362 of 365 days1990: 300 of 365 days1991: 335 of 365 days1992: 31 of 366 days2007: 312 of 365 days2008: 323 of 366 days2009: 356 of 365 days19501960197019801990
51 years of record at Jolalpan, 1945 to 2009. 7 years have data for under 90 percent of days and are left out of rankings: 1945, 1948, 1988, 1990, 1992, 2007, 2008.
Days with data per year at Jolalpan
YearDays with dataShare of yearComplete
194513838%No
194636399%Yes
1947365100%Yes
194830684%No
1949365100%Yes
1950365100%Yes
1951365100%Yes
1952365100%Yes
1953364100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957364100%Yes
195836399%Yes
195936299%Yes
1960365100%Yes
1961365100%Yes
1962365100%Yes
196336399%Yes
1964365100%Yes
196536399%Yes
1966364100%Yes
196735998%Yes
196836499%Yes
196935998%Yes
197036299%Yes
1971364100%Yes
197236399%Yes
197336199%Yes
1974365100%Yes
197533592%Yes
197636399%Yes
1977364100%Yes
1978364100%Yes
1979364100%Yes
1980365100%Yes
198133391%Yes
1982365100%Yes
1983364100%Yes
198436499%Yes
1985364100%Yes
1986365100%Yes
1987364100%Yes
198830182%No
198936299%Yes
199030082%No
199133592%Yes
1992318%No
200731285%No
200832388%No
200935698%Yes

Latest Records

20
Latest records at Jolalpan
DateStationRecordValueBeat old record byOld record stoodSignificance
30 December 2009Jolalpan, MXdaily low max (Tie)30.0 C (86.0 F)tie34 years4 of 100 (Routine)
23 December 2009Jolalpan, MXdaily low max30.6 C (87.1 F)0.5 C (0.9 F)36 years18 of 100 (Routine)
16 December 2009Jolalpan, MXdaily low max (Tie)26.7 C (80.1 F)tie27 years3 of 100 (Routine)
11 December 2009Jolalpan, MXdaily high min (Tie)16.7 C (62.1 F)tie32 years3 of 100 (Routine)
7 December 2009Jolalpan, MXdaily high min (Tie)16.7 C (62.1 F)tie40 years4 of 100 (Routine)
6 December 2009Jolalpan, MXdaily high min16.7 C (62.1 F)0.6 C (1.1 F)44 years20 of 100 (Routine)
5 December 2009Jolalpan, MXdaily high min (Tie)17.8 C (64.0 F)tie28 years3 of 100 (Routine)
2 December 2009Jolalpan, MXdaily low max (Tie)30.0 C (86.0 F)tie62 years6 of 100 (Routine)
1 December 2009Jolalpan, MXdaily low max (Tie)30.0 C (86.0 F)tie52 years5 of 100 (Routine)
20 November 2009Jolalpan, MXdaily low max (Tie)30.0 C (86.0 F)tie0 years1 of 100 (Routine)
15 November 2009Jolalpan, MXdaily low max30.6 C (87.1 F)0.5 C (0.9 F)30 years17 of 100 (Routine)
8 November 2009Jolalpan, MXdaily low max (Tie)30.0 C (86.0 F)tie44 years4 of 100 (Routine)
6 November 2009Jolalpan, MXdaily low max (Tie)30.0 C (86.0 F)tie48 years5 of 100 (Routine)
4 November 2009Jolalpan, MXdaily low max (Tie)30.6 C (87.1 F)tie39 years4 of 100 (Routine)
1 November 2009Jolalpan, MXdaily low max (Tie)30.6 C (87.1 F)tie50 years5 of 100 (Routine)
31 October 2009Jolalpan, MXdaily low max (Tie)27.8 C (82.0 F)tie42 years4 of 100 (Routine)
30 October 2009Jolalpan, MXdaily rain10.4 mm (0.4 in)2.3 mm (0.09 in)40 years19 of 100 (Routine)
29 October 2009Jolalpan, MXmonthly low max (Tie)25.0 C (77.0 F)tie48 years7 of 100 (Routine)
28 October 2009Jolalpan, MXdaily low max27.8 C (82.0 F)2.2 C (4.0 F)48 years31 of 100 (Routine)
24 October 2009Jolalpan, MXdaily rain27.4 mm (1.1 in)2.5 mm (0.10 in)32 years16 of 100 (Routine)

Climate Trend

40 complete years, 1946 to 2009
Annual mean temperature at Jolalpan as warming stripes, 1946 to 2009 One stripe for each of 40 complete years at Jolalpan, 1946 to 2009. Blue stripes are years cooler than the station's own mean of 25.5 C (77.9 F); red stripes are warmer. The coolest year was 2009, at 24.7 C (76.5 F), and the warmest was 1979, at 26.3 C (79.3 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1946: 26.2 C, +0.7 C from the station mean1947: 25.8 C, +0.3 C from the station mean1949: 25.2 C, -0.3 C from the station mean1950: 25.1 C, -0.4 C from the station mean1951: 25.6 C, +0.1 C from the station mean1952: 25.1 C, -0.4 C from the station mean1953: 25.5 C, 0.0 C from the station mean1954: 25.2 C, -0.3 C from the station mean1955: 24.9 C, -0.6 C from the station mean1956: 24.7 C, -0.8 C from the station mean1957: 25.6 C, +0.1 C from the station mean1958: 25.4 C, -0.1 C from the station mean1959: 25.4 C, -0.2 C from the station mean1960: 25.8 C, +0.3 C from the station mean1961: 25.7 C, +0.2 C from the station mean1962: 26.0 C, +0.5 C from the station mean1963: 25.9 C, +0.4 C from the station mean1964: 25.7 C, +0.2 C from the station mean1965: 25.1 C, -0.4 C from the station mean1966: 24.9 C, -0.6 C from the station mean1967: 25.6 C, +0.1 C from the station mean1968: 25.3 C, -0.2 C from the station mean1969: 26.0 C, +0.5 C from the station mean1970: 25.2 C, -0.3 C from the station mean1971: 25.0 C, -0.5 C from the station mean1972: 25.6 C, +0.1 C from the station mean1973: 25.3 C, -0.2 C from the station mean1974: 25.5 C, 0.0 C from the station mean1976: 25.6 C, +0.1 C from the station mean1977: 25.8 C, +0.3 C from the station mean1978: 25.9 C, +0.4 C from the station mean1979: 26.3 C, +0.8 C from the station mean1980: 26.2 C, +0.7 C from the station mean1982: 26.2 C, +0.7 C from the station mean1983: 25.5 C, 0.0 C from the station mean1984: 25.3 C, -0.2 C from the station mean1985: 25.2 C, -0.3 C from the station mean1986: 25.7 C, +0.2 C from the station mean1987: 25.4 C, -0.1 C from the station mean2009: 24.7 C, -0.8 C from the station mean1946195019601970198019902000
One stripe for each of 40 complete years at Jolalpan, 1946 to 2009. Blue stripes are years cooler than the station's own mean of 25.5 C (77.9 F); red stripes are warmer. The coolest year was 2009, at 24.7 C (76.5 F), and the warmest was 1979, at 26.3 C (79.3 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Jolalpan as warming stripes, 1946 to 2009
YearAnnual mean temperatureDifference from the station mean
194626.2 C+0.70 C
194725.8 C+0.25 C
194925.2 C-0.32 C
195025.1 C-0.37 C
195125.6 C+0.08 C
195225.1 C-0.45 C
195325.5 C-0.01 C
195425.2 C-0.30 C
195524.9 C-0.61 C
195624.7 C-0.78 C
195725.6 C+0.09 C
195825.4 C-0.08 C
195925.4 C-0.16 C
196025.8 C+0.27 C
196125.7 C+0.22 C
196226.0 C+0.52 C
196325.9 C+0.36 C
196425.7 C+0.23 C
196525.1 C-0.38 C
196624.9 C-0.64 C
196725.6 C+0.13 C
196825.3 C-0.17 C
196926.0 C+0.48 C
197025.2 C-0.27 C
197125.0 C-0.50 C
197225.6 C+0.07 C
197325.3 C-0.21 C
197425.5 C+0.02 C
197625.6 C+0.11 C
197725.8 C+0.30 C
197825.9 C+0.43 C
197926.3 C+0.78 C
198026.2 C+0.65 C
198226.2 C+0.65 C
198325.5 C+0.03 C
198425.3 C-0.20 C
198525.2 C-0.27 C
198625.7 C+0.22 C
198725.4 C-0.14 C
200924.7 C-0.79 C

The fitted trend in annual mean temperature here over 1946 to 2009 is 0.01 C (-0.09 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.02 F (-0.16 to 0.19) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Jolalpan
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.01 C (-0.09 to 0.11) per decade0.02 F (-0.16 to 0.19) per decade1946 to 200940Not clearly different from zero
Mean daily maximum-0.3 C (-0.4 to -0.1) per decade-0.5 F (-0.7 to -0.2) per decade1946 to 200940Fall
Mean daily minimum0.3 C (0.1 to 0.4) per decade0.5 F (0.2 to 0.7) per decade1946 to 200940Rise

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

1944 to 2009
Yearly extremes at Jolalpan: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)47.8 C (118.0 F)194642.2 C (108.0 F)51
Coldest night (TNn)-1.1 C (30.0 F)19535.0 C (41.0 F)51
Wettest day (Rx1day)159.8 mm (6.3 in)195455.4 mm (2.2 in)52
Wettest five days (Rx5day)173.5 mm (6.8 in)2008109.2 mm (4.3 in)52
Longest dry spell (CDD)158 days198884 days52

Hottest day (TXx)

Hottest day (TXx) at Jolalpan by year The hottest day of the year at Jolalpan, 1944 to 2009. The record is 47.8 C (118.0 F) in 1946, marked on the chart; the median year is 42.2 C (108.0 F). 37.54042.54547.550196019802000Record: 47.8 C (118.0 F) in 1946
The hottest day of the year at Jolalpan, 1944 to 2009. The record is 47.8 C (118.0 F) in 1946, marked on the chart; the median year is 42.2 C (108.0 F).
Hottest day (TXx) at Jolalpan by year
YearHottest day (TXx)
1944n/a
194544.4 C (111.9 F)
194647.8 C (118.0 F)
194742.8 C (109.0 F)
194841.7 C (107.1 F)
194941.7 C (107.1 F)
195042.2 C (108.0 F)
195142.8 C (109.0 F)
195241.7 C (107.1 F)
195342.8 C (109.0 F)
195442.8 C (109.0 F)
195543.3 C (109.9 F)
195641.7 C (107.1 F)
195742.2 C (108.0 F)
195842.8 C (109.0 F)
195941.7 C (107.1 F)
196042.2 C (108.0 F)
196142.2 C (108.0 F)
196242.8 C (109.0 F)
196342.8 C (109.0 F)
196443.3 C (109.9 F)
196544.4 C (111.9 F)
196642.8 C (109.0 F)
196742.2 C (108.0 F)
196841.7 C (107.1 F)
196941.7 C (107.1 F)
197042.8 C (109.0 F)
197142.8 C (109.0 F)
197241.1 C (106.0 F)
197342.8 C (109.0 F)
197441.7 C (107.1 F)
197541.1 C (106.0 F)
197641.7 C (107.1 F)
197742.2 C (108.0 F)
197842.2 C (108.0 F)
197941.1 C (106.0 F)
198043.3 C (109.9 F)
198141.1 C (106.0 F)
198241.7 C (107.1 F)
198341.7 C (107.1 F)
198441.7 C (107.1 F)
198542.2 C (108.0 F)
198642.2 C (108.0 F)
198741.1 C (106.0 F)
198842.2 C (108.0 F)
198941.7 C (107.1 F)
199041.7 C (107.1 F)
199141.7 C (107.1 F)
199237.8 C (100.0 F)
200740.6 C (105.1 F)
200840.0 C (104.0 F)
200941.7 C (107.1 F)

Coldest night (TNn)

Coldest night (TNn) at Jolalpan by year The coldest night of the year at Jolalpan, 1944 to 2009. The record is -1.1 C (30.0 F) in 1953, marked on the chart; the median year is 5.0 C (41.0 F). -5051015196019802000Record: -1.1 C (30.0 F) in 1953
The coldest night of the year at Jolalpan, 1944 to 2009. The record is -1.1 C (30.0 F) in 1953, marked on the chart; the median year is 5.0 C (41.0 F).
Coldest night (TNn) at Jolalpan by year
YearColdest night (TNn)
1944n/a
19456.1 C (43.0 F)
19465.0 C (41.0 F)
19477.2 C (45.0 F)
19485.0 C (41.0 F)
19491.1 C (34.0 F)
19503.3 C (37.9 F)
19514.4 C (39.9 F)
19523.9 C (39.0 F)
1953-1.1 C (30.0 F)
19541.7 C (35.1 F)
19551.1 C (34.0 F)
19560.6 C (33.1 F)
19573.9 C (39.0 F)
19586.7 C (44.1 F)
19593.9 C (39.0 F)
19604.4 C (39.9 F)
19611.1 C (34.0 F)
19626.1 C (43.0 F)
19633.9 C (39.0 F)
19647.8 C (46.0 F)
19652.8 C (37.0 F)
19663.3 C (37.9 F)
19671.7 C (35.1 F)
19686.7 C (44.1 F)
19693.9 C (39.0 F)
19700.6 C (33.1 F)
19715.0 C (41.0 F)
19724.4 C (39.9 F)
19735.6 C (42.1 F)
19746.7 C (44.1 F)
19756.7 C (44.1 F)
19765.0 C (41.0 F)
19775.0 C (41.0 F)
19787.8 C (46.0 F)
19797.8 C (46.0 F)
19805.0 C (41.0 F)
19815.0 C (41.0 F)
19823.3 C (37.9 F)
19835.6 C (42.1 F)
19842.8 C (37.0 F)
19857.8 C (46.0 F)
19862.8 C (37.0 F)
19873.9 C (39.0 F)
19887.2 C (45.0 F)
19896.7 C (44.1 F)
19905.0 C (41.0 F)
19916.7 C (44.1 F)
19925.0 C (41.0 F)
20076.7 C (44.1 F)
200810.6 C (51.1 F)
20098.9 C (48.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Jolalpan by year The wettest day of the year at Jolalpan, 1944 to 2009. The record is 159.8 mm (6.3 in) in 1954, marked on the chart; the median year is 55.4 mm (2.2 in). 050100150200196019802000Record: 159.8 mm (6.3 in) in 1954
The wettest day of the year at Jolalpan, 1944 to 2009. The record is 159.8 mm (6.3 in) in 1954, marked on the chart; the median year is 55.4 mm (2.2 in).
Wettest day (Rx1day) at Jolalpan by year
YearWettest day (Rx1day)
194463.0 mm (2.5 in)
194562.0 mm (2.4 in)
194647.8 mm (1.9 in)
194743.9 mm (1.7 in)
194834.0 mm (1.3 in)
194932.3 mm (1.3 in)
195057.2 mm (2.3 in)
195136.8 mm (1.4 in)
1952106.7 mm (4.2 in)
195354.4 mm (2.1 in)
1954159.8 mm (6.3 in)
1955115.8 mm (4.6 in)
195636.3 mm (1.4 in)
195799.8 mm (3.9 in)
195838.9 mm (1.5 in)
195959.9 mm (2.4 in)
196044.5 mm (1.8 in)
196174.9 mm (2.9 in)
196252.3 mm (2.1 in)
196357.9 mm (2.3 in)
196454.9 mm (2.2 in)
196547.0 mm (1.9 in)
196640.9 mm (1.6 in)
196733.8 mm (1.3 in)
196847.0 mm (1.9 in)
196972.4 mm (2.9 in)
197063.8 mm (2.5 in)
197181.8 mm (3.2 in)
197241.9 mm (1.6 in)
197355.9 mm (2.2 in)
197468.3 mm (2.7 in)
197559.9 mm (2.4 in)
197654.4 mm (2.1 in)
197746.5 mm (1.8 in)
197859.9 mm (2.4 in)
197959.9 mm (2.4 in)
198052.3 mm (2.1 in)
198157.9 mm (2.3 in)
1982113.3 mm (4.5 in)
198347.5 mm (1.9 in)
198443.9 mm (1.7 in)
198556.9 mm (2.2 in)
198637.8 mm (1.5 in)
198763.8 mm (2.5 in)
198882.8 mm (3.3 in)
198939.4 mm (1.6 in)
199071.9 mm (2.8 in)
199144.5 mm (1.8 in)
19927.9 mm (0.31 in)
200743.9 mm (1.7 in)
200894.5 mm (3.7 in)
200957.2 mm (2.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Jolalpan by year The wettest five days of the year at Jolalpan, 1944 to 2009. The record is 173.5 mm (6.8 in) in 2008, marked on the chart; the median year is 109.2 mm (4.3 in). 050100150200196019802000Record: 173.5 mm (6.8 in) in 2008
The wettest five days of the year at Jolalpan, 1944 to 2009. The record is 173.5 mm (6.8 in) in 2008, marked on the chart; the median year is 109.2 mm (4.3 in).
Wettest five days (Rx5day) at Jolalpan by year
YearWettest five days (Rx5day)
194481.6 mm (3.2 in)
1945129.3 mm (5.1 in)
194691.0 mm (3.6 in)
194770.4 mm (2.8 in)
194883.1 mm (3.3 in)
194991.2 mm (3.6 in)
195099.6 mm (3.9 in)
195185.9 mm (3.4 in)
1952161.3 mm (6.4 in)
195397.3 mm (3.8 in)
1954160.6 mm (6.3 in)
1955143.7 mm (5.7 in)
195694.3 mm (3.7 in)
1957114.1 mm (4.5 in)
1958103.7 mm (4.1 in)
1959153.4 mm (6.0 in)
196088.2 mm (3.5 in)
1961133.3 mm (5.2 in)
196283.0 mm (3.3 in)
1963137.4 mm (5.4 in)
196488.6 mm (3.5 in)
1965109.3 mm (4.3 in)
1966131.1 mm (5.2 in)
196784.0 mm (3.3 in)
196899.3 mm (3.9 in)
1969114.3 mm (4.5 in)
1970120.1 mm (4.7 in)
1971130.4 mm (5.1 in)
197295.5 mm (3.8 in)
1973110.3 mm (4.3 in)
1974143.9 mm (5.7 in)
1975122.3 mm (4.8 in)
1976121.0 mm (4.8 in)
197790.9 mm (3.6 in)
1978109.1 mm (4.3 in)
1979119.6 mm (4.7 in)
198098.1 mm (3.9 in)
1981141.5 mm (5.6 in)
1982121.2 mm (4.8 in)
198377.3 mm (3.0 in)
1984128.3 mm (5.1 in)
1985120.9 mm (4.8 in)
198658.2 mm (2.3 in)
1987131.3 mm (5.2 in)
1988114.4 mm (4.5 in)
198960.2 mm (2.4 in)
199097.8 mm (3.9 in)
1991121.0 mm (4.8 in)
199223.1 mm (0.9 in)
200795.2 mm (3.7 in)
2008173.5 mm (6.8 in)
2009104.6 mm (4.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Jolalpan by year The longest dry spell of the year at Jolalpan, 1944 to 2009. The record is 158 days in 1988, marked on the chart; the median year is 84 days. 050100150200196019802000Record: 158 days in 1988
The longest dry spell of the year at Jolalpan, 1944 to 2009. The record is 158 days in 1988, marked on the chart; the median year is 84 days.
Longest dry spell (CDD) at Jolalpan by year
YearLongest dry spell (CDD)
194444 days
194578 days
194686 days
1947115 days
194858 days
1949144 days
195099 days
195177 days
195292 days
1953141 days
195463 days
1955152 days
195684 days
195753 days
195849 days
1959111 days
1960122 days
196179 days
1962105 days
1963120 days
1964100 days
196583 days
196682 days
196763 days
196884 days
196967 days
1970127 days
197194 days
1972105 days
197394 days
197471 days
1975110 days
197657 days
197779 days
197866 days
197952 days
198071 days
198162 days
198281 days
198372 days
198468 days
198576 days
198699 days
198792 days
1988158 days
1989153 days
199082 days
199190 days
199216 days
200790 days
2008118 days
2009130 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, 1945 to 2009

A day with at least 52.5 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 164.2 mm (6.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Jolalpan: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years52.5 mm (2.1 in)
5 years71.5 mm (2.8 in)
10 years87.5 mm (3.4 in)
25 years112.9 mm (4.4 in)
50 years136.3 mm (5.4 in)Longer than the 48 years of record
100 years164.2 mm (6.5 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 1945 to 2009.

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: 159.8 mm (6.3 in) in 1954; 115.8 mm (4.6 in) in 1955; 113.3 mm (4.5 in) in 1982.

Download the Data

  • Data for Jolalpan standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Jolalpan 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).