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San Juan Peyotan Weather Records (MXN00018031)

Record envelope, standing records and threshold days for San Juan Peyotan (MXN00018031), Mexico, with 48 years of record.

Key Facts for San Juan Peyotan

  • San Juan Peyotan (MXN00018031) is a weather station in Mexico at 22.35 latitude and -104.42 longitude, 639 m (2,096 ft) above sea level.
  • The station reports from 1966 to 2013, 48 years of record.
  • 1,464 records set at San Juan Peyotan still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • San Juan Peyotan set a daily record precipitation of 20.8 mm (0.8 in) on 20 December 2013.

About the Station

  • Location: Mexico, 22.35 latitude, -104.42 longitude.
  • Elevation: 639 m (2,096 ft).
  • Period of record: 1966 to 2013, 48 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 San Juan Peyotan, with 2026 drawn through them The band shows the record high and record low for each calendar day at San Juan Peyotan. 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 San Juan Peyotan. 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 San Juan Peyotan, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan45.6 C (114.1 F)0.0 C (32.0 F)n/an/a
Feb41.7 C (107.1 F)1.7 C (35.1 F)n/an/a
Mar42.2 C (108.0 F)2.8 C (37.0 F)n/an/a
Apr45.0 C (113.0 F)5.6 C (42.1 F)n/an/a
May45.6 C (114.1 F)6.7 C (44.1 F)n/an/a
Jun45.6 C (114.1 F)6.7 C (44.1 F)n/an/a
Jul45.0 C (113.0 F)6.7 C (44.1 F)n/an/a
Aug46.7 C (116.1 F)6.7 C (44.1 F)n/an/a
Sep41.7 C (107.1 F)6.7 C (44.1 F)n/an/a
Oct42.8 C (109.0 F)5.6 C (42.1 F)n/an/a
Nov40.6 C (105.1 F)3.9 C (39.0 F)n/an/a
Dec42.8 C (109.0 F)0.0 C (32.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at San Juan Peyotan by the year they were set 1,464 records at San Juan Peyotan still stand. 2005 holds the most, with 191. 0501001502001972: 391973: 881974: 1201975: 1651976: 671977: 141978: 171979: 81980: 241981: 561982: 131983: 181984: 111985: 121986: 151987: 271988: 161989: 321990: 71991: 221992: 201993: 171994: 91995: 141996: 41997: 621998: 291999: 192000: 172001: 502002: 432003: 102004: 342005: 1912006: 722007: 452008: 202009: 162011: 32012: 42013: 14197219771982198719921997200220072013
1,464 records at San Juan Peyotan still stand. 2005 holds the most, with 191.
Standing records at San Juan Peyotan by the year they were set
Year setStanding records
197239
197388
1974120
1975165
197667
197714
197817
19798
198024
198156
198213
198318
198411
198512
198615
198727
198816
198932
19907
199122
199220
199317
19949
199514
19964
199762
199829
199919
200017
200150
200243
200310
200434
2005191
200672
200745
200820
200916
20113
20124
201314

All-Time Record Progression

1 new records
When San Juan Peyotan set new all-time records 1 all-time records were set at San Juan Peyotan between 27 August 2011 and 27 August 2011. Each dot is a new record. Record daily precipitation27 August 2011: Record daily precipitation 140.0 mm (5.5 in)
1 all-time records were set at San Juan Peyotan between 27 August 2011 and 27 August 2011. Each dot is a new record.
When San Juan Peyotan set new all-time records
DateKindDetail
2011-08-27Record daily precipitationRecord daily precipitation 140.0 mm (5.5 in)

Wettest Day of Each Month

Aug: 140.0 mm (5.5 in)
Record daily precipitation for each month at San Juan Peyotan The wettest day on record for each calendar month at San Juan Peyotan. The most was 140.0 mm (5.5 in) on 27 August 2011. 050100150 Jan: 105.9 mm (4.2 in), 12 January 1987 Jan Feb: 54.9 mm (2.2 in), 12 February 2002 Feb Mar: 50.8 mm (2.0 in), 5 March 1968 Mar Apr: 19.1 mm (0.8 in), 2 April 1966 Apr May: 40.9 mm (1.6 in), 14 May 2002 May Jun: 81.8 mm (3.2 in), 30 June 1991 Jun Jul: 97.8 mm (3.9 in), 28 July 1981 Jul Aug: 140.0 mm (5.5 in), 27 August 2011 Aug Sep: 88.9 mm (3.5 in), 2 September 1999 Sep Oct: 64.8 mm (2.6 in), 9 October 1982 Oct Nov: 79.8 mm (3.1 in), 25 November 1982 Nov Dec: 63.0 mm (2.5 in), 13 December 1992 Dec
The wettest day on record for each calendar month at San Juan Peyotan. The most was 140.0 mm (5.5 in) on 27 August 2011.
Record daily precipitation for each month at San Juan Peyotan
MonthRecord daily precipitation (mm)Date
Jan105.9 mm (4.2 in)12 January 1987
Feb54.9 mm (2.2 in)12 February 2002
Mar50.8 mm (2.0 in)5 March 1968
Apr19.1 mm (0.8 in)2 April 1966
May40.9 mm (1.6 in)14 May 2002
Jun81.8 mm (3.2 in)30 June 1991
Jul97.8 mm (3.9 in)28 July 1981
Aug140.0 mm (5.5 in)27 August 2011
Sep88.9 mm (3.5 in)2 September 1999
Oct64.8 mm (2.6 in)9 October 1982
Nov79.8 mm (3.1 in)25 November 1982
Dec63.0 mm (2.5 in)13 December 1992

Period of Record Coverage

1972 to 2013
Days with data per year at San Juan Peyotan 42 years of record at San Juan Peyotan, 1972 to 2013. 10 years have data for under 90 percent of days and are left out of rankings: 1977, 1978, 1979, 1985, 1988, 1989, 1990, 1997 and others. 1972: 364 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 335 of 365 days1976: 366 of 366 days1977: 325 of 365 days1978: 153 of 365 days1979: 213 of 365 days1980: 335 of 366 days1981: 358 of 365 days1982: 335 of 365 days1983: 364 of 365 days1984: 335 of 366 days1985: 274 of 365 days1986: 365 of 365 days1987: 332 of 365 days1988: 301 of 366 days1989: 303 of 365 days1990: 242 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 364 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 307 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 356 of 365 days2003: 304 of 365 days2004: 364 of 366 days2005: 332 of 365 days2006: 334 of 365 days2007: 334 of 365 days2008: 336 of 366 days2009: 364 of 365 days2010: 31 of 365 days2011: 365 of 365 days2012: 362 of 366 days2013: 360 of 365 days1980199020002010
42 years of record at San Juan Peyotan, 1972 to 2013. 10 years have data for under 90 percent of days and are left out of rankings: 1977, 1978, 1979, 1985, 1988, 1989, 1990, 1997 and others.
Days with data per year at San Juan Peyotan
YearDays with dataShare of yearComplete
197236499%Yes
1973365100%Yes
1974365100%Yes
197533592%Yes
1976366100%Yes
197732589%No
197815342%No
197921358%No
198033592%Yes
198135898%Yes
198233592%Yes
1983364100%Yes
198433592%Yes
198527475%No
1986365100%Yes
198733291%Yes
198830182%No
198930383%No
199024266%No
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994364100%Yes
1995365100%Yes
1996366100%Yes
199730784%No
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
200235698%Yes
200330483%No
200436499%Yes
200533291%Yes
200633492%Yes
200733492%Yes
200833692%Yes
2009364100%Yes
2010318%No
2011365100%Yes
201236299%Yes
201336099%Yes

Latest Records

20
Latest records at San Juan Peyotan
DateStationRecordValueBeat old record byOld record stoodSignificance
20 December 2013San Juan Peyotan, MXdaily rain20.8 mm (0.8 in)16.5 mm (0.6 in)26 years20 of 100 (Routine)
15 November 2013San Juan Peyotan, MXdaily rain20.8 mm (0.8 in)18.0 mm (0.7 in)19 years20 of 100 (Routine)
9 November 2013San Juan Peyotan, MXdaily low max26.7 C (80.1 F)3.3 C (5.9 F)11 years17 of 100 (Routine)
8 November 2013San Juan Peyotan, MXdaily low max28.9 C (84.0 F)1.7 C (3.1 F)14 years13 of 100 (Routine)
6 November 2013San Juan Peyotan, MXdaily rain10.2 mm (0.4 in)10.2 mm (0.4 in)47 years20 of 100 (Routine)
5 November 2013San Juan Peyotan, MXdaily low max25.0 C (77.0 F)2.8 C (5.0 F)20 years19 of 100 (Routine)
3 November 2013San Juan Peyotan, MXdaily high max (Tie)38.9 C (102.0 F)tie16 years2 of 100 (Routine)
17 October 2013San Juan Peyotan, MXdaily high min23.9 C (75.0 F)1.1 C (2.0 F)36 years17 of 100 (Routine)
16 October 2013San Juan Peyotan, MXdaily high min (Tie)22.8 C (73.0 F)tie39 years3 of 100 (Routine)
12 October 2013San Juan Peyotan, MXdaily rain24.9 mm (1.0 in)13.5 mm (0.5 in)0 years14 of 100 (Routine)
6 October 2013San Juan Peyotan, MXdaily rain11.9 mm (0.5 in)7.1 mm (0.28 in)12 years12 of 100 (Routine)
17 September 2013San Juan Peyotan, MXdaily low max30.0 C (86.0 F)1.1 C (2.0 F)22 years14 of 100 (Routine)
9 September 2013San Juan Peyotan, MXdaily low max30.6 C (87.1 F)1.1 C (2.0 F)7 years10 of 100 (Routine)
8 September 2013San Juan Peyotan, MXdaily low max (Tie)31.7 C (89.1 F)tie8 years1 of 100 (Routine)
24 August 2013San Juan Peyotan, MXdaily high min (Tie)23.9 C (75.0 F)tie2 years1 of 100 (Routine)
23 August 2013San Juan Peyotan, MXdaily rain27.9 mm (1.1 in)2.0 mm (0.08 in)15 years9 of 100 (Routine)
23 August 2013San Juan Peyotan, MXdaily high min25.0 C (77.0 F)1.1 C (2.0 F)2 years6 of 100 (Routine)
18 August 2013San Juan Peyotan, MXdaily high min (Tie)25.0 C (77.0 F)tie35 years3 of 100 (Routine)
17 August 2013San Juan Peyotan, MXdaily high min (Tie)25.0 C (77.0 F)tie35 years3 of 100 (Routine)
1 August 2013San Juan Peyotan, MXdaily high min (Tie)25.0 C (77.0 F)tie40 years4 of 100 (Routine)

Climate Trend

23 complete years, 1972 to 2013
Annual mean temperature at San Juan Peyotan as warming stripes, 1972 to 2013 One stripe for each of 23 complete years at San Juan Peyotan, 1972 to 2013. Blue stripes are years cooler than the station's own mean of 25.3 C (77.5 F); red stripes are warmer. The coolest year was 2004, at 22.9 C (73.2 F), and the warmest was 1974, at 28.8 C (83.8 F). The strongest colour marks a difference of 3.5 C (6.3 F). 1972: 27.0 C, +1.7 C from the station mean1973: 27.7 C, +2.4 C from the station mean1974: 28.8 C, +3.5 C from the station mean1976: 27.0 C, +1.7 C from the station mean1981: 25.1 C, -0.2 C from the station mean1983: 24.5 C, -0.8 C from the station mean1986: 25.0 C, -0.3 C from the station mean1991: 25.1 C, -0.2 C from the station mean1992: 24.5 C, -0.8 C from the station mean1993: 25.2 C, -0.1 C from the station mean1994: 25.2 C, -0.1 C from the station mean1995: 24.6 C, -0.7 C from the station mean1996: 24.6 C, -0.7 C from the station mean1998: 24.1 C, -1.2 C from the station mean1999: 23.4 C, -1.9 C from the station mean2000: 23.8 C, -1.5 C from the station mean2001: 24.1 C, -1.2 C from the station mean2002: 24.5 C, -0.8 C from the station mean2004: 22.9 C, -2.4 C from the station mean2009: 26.1 C, +0.8 C from the station mean2011: 26.4 C, +1.1 C from the station mean2012: 26.1 C, +0.8 C from the station mean2013: 26.4 C, +1.1 C from the station mean197219751980198519901995200020052010
One stripe for each of 23 complete years at San Juan Peyotan, 1972 to 2013. Blue stripes are years cooler than the station's own mean of 25.3 C (77.5 F); red stripes are warmer. The coolest year was 2004, at 22.9 C (73.2 F), and the warmest was 1974, at 28.8 C (83.8 F). The strongest colour marks a difference of 3.5 C (6.3 F).
Annual mean temperature at San Juan Peyotan as warming stripes, 1972 to 2013
YearAnnual mean temperatureDifference from the station mean
197227.0 C+1.66 C
197327.7 C+2.40 C
197428.8 C+3.47 C
197627.0 C+1.73 C
198125.1 C-0.18 C
198324.5 C-0.83 C
198625.0 C-0.31 C
199125.1 C-0.25 C
199224.5 C-0.83 C
199325.2 C-0.06 C
199425.2 C-0.10 C
199524.6 C-0.68 C
199624.6 C-0.73 C
199824.1 C-1.18 C
199923.4 C-1.88 C
200023.8 C-1.51 C
200124.1 C-1.24 C
200224.5 C-0.85 C
200422.9 C-2.40 C
200926.1 C+0.76 C
201126.4 C+1.11 C
201226.1 C+0.76 C
201326.4 C+1.12 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1966 to 2013
Yearly extremes at San Juan Peyotan: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.7 C (116.1 F)200243.9 C (111.0 F)42
Coldest night (TNn)0.0 C (32.0 F)19885.0 C (41.0 F)42
Wettest day (Rx1day)140.0 mm (5.5 in)201157.4 mm (2.3 in)46
Wettest five days (Rx5day)204.3 mm (8.0 in)2011107.7 mm (4.2 in)46
Longest dry spell (CDD)167 days1999104 days46

Hottest day (TXx)

Hottest day (TXx) at San Juan Peyotan by year The hottest day of the year at San Juan Peyotan, 1966 to 2013. The record is 46.7 C (116.1 F) in 2002, marked on the chart; the median year is 43.9 C (111.0 F). 303540455019701980199020002010Record: 46.7 C (116.1 F) in 2002
The hottest day of the year at San Juan Peyotan, 1966 to 2013. The record is 46.7 C (116.1 F) in 2002, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at San Juan Peyotan by year
YearHottest day (TXx)
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
197242.8 C (109.0 F)
197343.3 C (109.9 F)
197445.0 C (113.0 F)
197542.8 C (109.0 F)
197645.6 C (114.1 F)
197742.8 C (109.0 F)
197842.8 C (109.0 F)
197941.1 C (106.0 F)
198041.7 C (107.1 F)
198141.7 C (107.1 F)
198242.2 C (108.0 F)
198343.9 C (111.0 F)
198441.7 C (107.1 F)
198545.0 C (113.0 F)
198643.9 C (111.0 F)
198745.6 C (114.1 F)
198845.0 C (113.0 F)
198944.4 C (111.9 F)
199043.9 C (111.0 F)
199143.9 C (111.0 F)
199245.0 C (113.0 F)
199345.6 C (114.1 F)
199445.0 C (113.0 F)
199543.9 C (111.0 F)
199645.0 C (113.0 F)
199745.0 C (113.0 F)
199845.0 C (113.0 F)
199943.9 C (111.0 F)
200045.0 C (113.0 F)
200145.0 C (113.0 F)
200246.7 C (116.1 F)
200345.6 C (114.1 F)
200445.0 C (113.0 F)
200545.0 C (113.0 F)
200640.6 C (105.1 F)
200745.0 C (113.0 F)
200838.9 C (102.0 F)
200942.8 C (109.0 F)
201033.9 C (93.0 F)
201141.7 C (107.1 F)
201242.8 C (109.0 F)
201343.9 C (111.0 F)

Coldest night (TNn)

Coldest night (TNn) at San Juan Peyotan by year The coldest night of the year at San Juan Peyotan, 1966 to 2013. The record is 0.0 C (32.0 F) in 1988, marked on the chart; the median year is 5.0 C (41.0 F). 05101519701980199020002010Record: 0.0 C (32.0 F) in 1988
The coldest night of the year at San Juan Peyotan, 1966 to 2013. The record is 0.0 C (32.0 F) in 1988, marked on the chart; the median year is 5.0 C (41.0 F).
Coldest night (TNn) at San Juan Peyotan by year
YearColdest night (TNn)
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
197210.0 C (50.0 F)
197310.0 C (50.0 F)
19748.9 C (48.0 F)
197512.8 C (55.0 F)
19767.2 C (45.0 F)
19772.8 C (37.0 F)
19785.6 C (42.1 F)
19795.0 C (41.0 F)
19805.0 C (41.0 F)
19815.0 C (41.0 F)
19825.0 C (41.0 F)
19835.0 C (41.0 F)
19845.6 C (42.1 F)
19852.8 C (37.0 F)
19862.8 C (37.0 F)
19873.9 C (39.0 F)
19880.0 C (32.0 F)
19895.0 C (41.0 F)
19905.6 C (42.1 F)
19911.7 C (35.1 F)
19925.0 C (41.0 F)
19935.6 C (42.1 F)
19943.9 C (39.0 F)
19953.9 C (39.0 F)
19963.9 C (39.0 F)
19970.0 C (32.0 F)
19981.7 C (35.1 F)
19991.7 C (35.1 F)
20003.9 C (39.0 F)
20012.8 C (37.0 F)
20023.9 C (39.0 F)
20036.7 C (44.1 F)
20045.6 C (42.1 F)
20053.9 C (39.0 F)
20066.7 C (44.1 F)
20078.9 C (48.0 F)
20086.7 C (44.1 F)
20097.8 C (46.0 F)
20105.6 C (42.1 F)
20115.6 C (42.1 F)
20125.6 C (42.1 F)
20133.9 C (39.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at San Juan Peyotan by year The wettest day of the year at San Juan Peyotan, 1966 to 2013. The record is 140.0 mm (5.5 in) in 2011, marked on the chart; the median year is 57.4 mm (2.3 in). 05010015019701980199020002010Record: 140.0 mm (5.5 in) in 2011
The wettest day of the year at San Juan Peyotan, 1966 to 2013. The record is 140.0 mm (5.5 in) in 2011, marked on the chart; the median year is 57.4 mm (2.3 in).
Wettest day (Rx1day) at San Juan Peyotan by year
YearWettest day (Rx1day)
196639.4 mm (1.6 in)
196762.0 mm (2.4 in)
196850.8 mm (2.0 in)
196959.9 mm (2.4 in)
197072.1 mm (2.8 in)
197267.3 mm (2.6 in)
197347.0 mm (1.9 in)
197437.8 mm (1.5 in)
197554.9 mm (2.2 in)
197659.9 mm (2.4 in)
197759.9 mm (2.4 in)
197859.9 mm (2.4 in)
197952.8 mm (2.1 in)
198066.8 mm (2.6 in)
198197.8 mm (3.9 in)
198279.8 mm (3.1 in)
198346.0 mm (1.8 in)
198454.9 mm (2.2 in)
198547.8 mm (1.9 in)
198647.8 mm (1.9 in)
1987105.9 mm (4.2 in)
198827.9 mm (1.1 in)
198942.9 mm (1.7 in)
199042.4 mm (1.7 in)
199183.8 mm (3.3 in)
199263.0 mm (2.5 in)
199363.8 mm (2.5 in)
199468.8 mm (2.7 in)
199563.8 mm (2.5 in)
199650.8 mm (2.0 in)
199741.9 mm (1.6 in)
199890.9 mm (3.6 in)
199988.9 mm (3.5 in)
200054.9 mm (2.2 in)
200145.0 mm (1.8 in)
200254.9 mm (2.2 in)
200333.8 mm (1.3 in)
200459.9 mm (2.4 in)
200569.9 mm (2.8 in)
200627.9 mm (1.1 in)
200734.8 mm (1.4 in)
200879.8 mm (3.1 in)
200952.8 mm (2.1 in)
2010n/a
2011140.0 mm (5.5 in)
201295.0 mm (3.7 in)
201338.9 mm (1.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at San Juan Peyotan by year The wettest five days of the year at San Juan Peyotan, 1966 to 2013. The record is 204.3 mm (8.0 in) in 2011, marked on the chart; the median year is 107.7 mm (4.2 in). 5010015020025019701980199020002010Record: 204.3 mm (8.0 in) in 2011
The wettest five days of the year at San Juan Peyotan, 1966 to 2013. The record is 204.3 mm (8.0 in) in 2011, marked on the chart; the median year is 107.7 mm (4.2 in).
Wettest five days (Rx5day) at San Juan Peyotan by year
YearWettest five days (Rx5day)
196664.6 mm (2.5 in)
1967116.3 mm (4.6 in)
1968124.5 mm (4.9 in)
196993.3 mm (3.7 in)
1970165.9 mm (6.5 in)
1972111.8 mm (4.4 in)
1973117.1 mm (4.6 in)
197469.6 mm (2.7 in)
1975132.2 mm (5.2 in)
1976120.2 mm (4.7 in)
1977119.3 mm (4.7 in)
197896.7 mm (3.8 in)
197982.1 mm (3.2 in)
1980141.5 mm (5.6 in)
1981139.7 mm (5.5 in)
198298.1 mm (3.9 in)
198381.4 mm (3.2 in)
1984125.3 mm (4.9 in)
1985121.2 mm (4.8 in)
198689.7 mm (3.5 in)
1987149.9 mm (5.9 in)
198863.2 mm (2.5 in)
1989144.5 mm (5.7 in)
199097.8 mm (3.9 in)
1991184.4 mm (7.3 in)
199295.6 mm (3.8 in)
1993119.2 mm (4.7 in)
199492.4 mm (3.6 in)
199593.5 mm (3.7 in)
199698.5 mm (3.9 in)
199784.6 mm (3.3 in)
1998117.6 mm (4.6 in)
1999132.5 mm (5.2 in)
200074.4 mm (2.9 in)
200197.5 mm (3.8 in)
200281.7 mm (3.2 in)
200374.5 mm (2.9 in)
2004103.6 mm (4.1 in)
2005132.7 mm (5.2 in)
200669.3 mm (2.7 in)
200794.3 mm (3.7 in)
2008171.0 mm (6.7 in)
2009122.2 mm (4.8 in)
2010n/a
2011204.3 mm (8.0 in)
2012173.0 mm (6.8 in)
201368.6 mm (2.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at San Juan Peyotan by year The longest dry spell of the year at San Juan Peyotan, 1966 to 2013. The record is 167 days in 1999, marked on the chart; the median year is 104 days. 5010015020019701980199020002010Record: 167 days in 1999
The longest dry spell of the year at San Juan Peyotan, 1966 to 2013. The record is 167 days in 1999, marked on the chart; the median year is 104 days.
Longest dry spell (CDD) at San Juan Peyotan by year
YearLongest dry spell (CDD)
196670 days
1967129 days
196897 days
1969101 days
1970118 days
1972127 days
1973107 days
197486 days
1975133 days
1976155 days
1977144 days
197862 days
1979101 days
1980139 days
198160 days
198290 days
198382 days
198469 days
1985135 days
1986113 days
198779 days
198896 days
198976 days
199055 days
1991166 days
199297 days
1993143 days
199486 days
1995125 days
1996152 days
199769 days
199898 days
1999167 days
2000151 days
200167 days
200289 days
2003119 days
2004137 days
2005138 days
2006131 days
200778 days
200898 days
2009119 days
2010n/a
2011164 days
2012118 days
201360 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

38 years, 1967 to 2013

A day with at least 60.0 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 138.2 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juan Peyotan: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years60.0 mm (2.4 in)
5 years79.5 mm (3.1 in)
10 years92.9 mm (3.7 in)
25 years110.6 mm (4.4 in)
50 years124.3 mm (4.9 in)Longer than the 38 years of record
100 years138.2 mm (5.4 in)Longer than the 38 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, 38 years of values from 1967 to 2013.

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: 140.0 mm (5.5 in) in 2011; 105.9 mm (4.2 in) in 1987; 97.8 mm (3.9 in) in 1981.

Download the Data

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