Built 2026-10-19 (19 October 2026)

El Zembo Weather Records (MXN00013116)

Record envelope, standing records and threshold days for El Zembo (MXN00013116), Mexico, with 33 years of record.

Key Facts for El Zembo

  • El Zembo (MXN00013116) is a weather station in Mexico at 20.15 latitude and -98.55 longitude, 2,310 m (7,578 ft) above sea level.
  • The station reports from 1980 to 2012, 33 years of record.
  • 1,464 records set at El Zembo still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • El Zembo tied a daily record low minimum temperature of 1.7 C (35.1 F) on 5 September 2012.

About the Station

  • Location: Mexico, 20.15 latitude, -98.55 longitude.
  • Elevation: 2,310 m (7,578 ft).
  • Period of record: 1980 to 2012, 33 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 Zembo, with 2026 drawn through them The band shows the record high and record low for each calendar day at El Zembo. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at El Zembo. 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 Zembo, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.0 C (86.0 F)-9.4 C (15.1 F)n/an/a
Feb31.7 C (89.1 F)-9.4 C (15.1 F)n/an/a
Mar33.9 C (93.0 F)-8.3 C (17.1 F)n/an/a
Apr35.6 C (96.1 F)-4.4 C (24.1 F)n/an/a
May36.7 C (98.1 F)-2.2 C (28.0 F)n/an/a
Jun33.9 C (93.0 F)0.0 C (32.0 F)n/an/a
Jul30.0 C (86.0 F)0.6 C (33.1 F)n/an/a
Aug28.9 C (84.0 F)0.6 C (33.1 F)n/an/a
Sep30.0 C (86.0 F)-3.3 C (26.1 F)n/an/a
Oct28.9 C (84.0 F)-6.1 C (21.0 F)n/an/a
Nov31.7 C (89.1 F)-9.4 C (15.1 F)n/an/a
Dec30.0 C (86.0 F)-10.0 C (14.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at El Zembo by the year they were set 1,464 records at El Zembo still stand. 1987 holds the most, with 93. 02550751001980: 631981: 851982: 541983: 611984: 581985: 351986: 451987: 931988: 481989: 391990: 461991: 361992: 441993: 271994: 461995: 581996: 531997: 861998: 871999: 352000: 532001: 282002: 232003: 262004: 372005: 162006: 362007: 252008: 182009: 242010: 402011: 322012: 7198019841988199219962000200420082012
1,464 records at El Zembo still stand. 1987 holds the most, with 93.
Standing records at El Zembo by the year they were set
Year setStanding records
198063
198185
198254
198361
198458
198535
198645
198793
198848
198939
199046
199136
199244
199327
199446
199558
199653
199786
199887
199935
200053
200128
200223
200326
200437
200516
200636
200725
200818
200924
201040
201132
20127

All-Time Record Progression

1 new records
When El Zembo set new all-time records 1 all-time records were set at El Zembo between 6 September 2011 and 6 September 2011. Each dot is a new record. Record daily precipitation6 September 2011: Record daily precipitation 125.0 mm (4.9 in)
1 all-time records were set at El Zembo between 6 September 2011 and 6 September 2011. Each dot is a new record.
When El Zembo set new all-time records
DateKindDetail
2011-09-06Record daily precipitationRecord daily precipitation 125.0 mm (4.9 in)

Wettest Day of Each Month

Sep: 125.0 mm (4.9 in)
Record daily precipitation for each month at El Zembo The wettest day on record for each calendar month at El Zembo. The most was 125.0 mm (4.9 in) on 6 September 2011. 050100150 Jan: 45.2 mm (1.8 in), 11 January 1984 Jan Feb: 35.8 mm (1.4 in), 4 February 2010 Feb Mar: 32.8 mm (1.3 in), 4 March 1988 Mar Apr: 54.4 mm (2.1 in), 4 April 2011 Apr May: 69.9 mm (2.8 in), 10 May 1980 May Jun: 95.0 mm (3.7 in), 4 June 2012 Jun Jul: 67.8 mm (2.7 in), 20 July 2011 Jul Aug: 88.9 mm (3.5 in), 22 August 2007 Aug Sep: 125.0 mm (4.9 in), 6 September 2011 Sep Oct: 93.5 mm (3.7 in), 5 October 2005 Oct Nov: 33.3 mm (1.3 in), 11 November 1992 Nov Dec: 18.3 mm (0.7 in), 3 December 2006 Dec
The wettest day on record for each calendar month at El Zembo. The most was 125.0 mm (4.9 in) on 6 September 2011.
Record daily precipitation for each month at El Zembo
MonthRecord daily precipitation (mm)Date
Jan45.2 mm (1.8 in)11 January 1984
Feb35.8 mm (1.4 in)4 February 2010
Mar32.8 mm (1.3 in)4 March 1988
Apr54.4 mm (2.1 in)4 April 2011
May69.9 mm (2.8 in)10 May 1980
Jun95.0 mm (3.7 in)4 June 2012
Jul67.8 mm (2.7 in)20 July 2011
Aug88.9 mm (3.5 in)22 August 2007
Sep125.0 mm (4.9 in)6 September 2011
Oct93.5 mm (3.7 in)5 October 2005
Nov33.3 mm (1.3 in)11 November 1992
Dec18.3 mm (0.7 in)3 December 2006

Period of Record Coverage

1980 to 2012
Days with data per year at El Zembo 33 years of record at El Zembo, 1980 to 2012. 2 years have data for under 90 percent of days and are left out of rankings: 1980, 2012. 1980: 245 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 364 of 365 days1992: 365 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 364 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 336 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 364 of 365 days2012: 122 of 366 days1980198519901995200020052010
33 years of record at El Zembo, 1980 to 2012. 2 years have data for under 90 percent of days and are left out of rankings: 1980, 2012.
Days with data per year at El Zembo
YearDays with dataShare of yearComplete
198024567%No
1981364100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990364100%Yes
1991364100%Yes
1992365100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000365100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005364100%Yes
2006365100%Yes
2007364100%Yes
200833692%Yes
2009365100%Yes
2010365100%Yes
2011364100%Yes
201212233%No

Latest Records

20
Latest records at El Zembo
DateStationRecordValueBeat old record byOld record stoodSignificance
5 September 2012El Zembo, MXdaily low min (Tie)1.7 C (35.1 F)tie18 years2 of 100 (Routine)
24 August 2012El Zembo, MXdaily high min10.0 C (50.0 F)1.1 C (2.0 F)27 years17 of 100 (Routine)
20 August 2012El Zembo, MXdaily high min10.0 C (50.0 F)1.1 C (2.0 F)32 years18 of 100 (Routine)
19 August 2012El Zembo, MXdaily high min10.0 C (50.0 F)1.1 C (2.0 F)26 years16 of 100 (Routine)
19 August 2012El Zembo, MXdaily low max (Tie)18.9 C (66.0 F)tie31 years3 of 100 (Routine)
18 August 2012El Zembo, MXdaily rain65.3 mm (2.6 in)43.2 mm (1.7 in)24 years45 of 100 (Notable)
18 August 2012El Zembo, MXdaily low max (Tie)18.9 C (66.0 F)tie32 years3 of 100 (Routine)
17 August 2012El Zembo, MXdaily low max (Tie)17.8 C (64.0 F)tie20 years2 of 100 (Routine)
11 August 2012El Zembo, MXdaily low max (Tie)17.8 C (64.0 F)tie29 years2 of 100 (Routine)
10 August 2012El Zembo, MXdaily rain34.8 mm (1.4 in)4.8 mm (0.19 in)17 years11 of 100 (Routine)
10 August 2012El Zembo, MXmonthly low max (Tie)15.0 C (59.0 F)tie4 years3 of 100 (Routine)
9 August 2012El Zembo, MXmonthly low max (Tie)15.0 C (59.0 F)tie4 years3 of 100 (Routine)
5 August 2012El Zembo, MXdaily high min (Tie)7.8 C (46.0 F)tie32 years3 of 100 (Routine)
25 July 2012El Zembo, MXdaily rain24.9 mm (1.0 in)4.1 mm (0.16 in)31 years16 of 100 (Routine)
18 July 2012El Zembo, MXdaily rain45.0 mm (1.8 in)29.3 mm (1.2 in)2 years31 of 100 (Routine)
18 July 2012El Zembo, MXdaily low max17.8 C (64.0 F)1.1 C (2.0 F)29 years15 of 100 (Routine)
14 July 2012El Zembo, MXdaily rain22.9 mm (0.9 in)0.5 mm (0.02 in)1 year3 of 100 (Routine)
13 July 2012El Zembo, MXdaily high min10.0 C (50.0 F)1.1 C (2.0 F)28 years16 of 100 (Routine)
12 July 2012El Zembo, MXdaily rain38.9 mm (1.5 in)8.9 mm (0.35 in)13 years14 of 100 (Routine)
10 July 2012El Zembo, MXdaily rain54.9 mm (2.2 in)35.1 mm (1.4 in)3 years37 of 100 (Notable)

Climate Trend

30 complete years, 1981 to 2011
Annual mean temperature at El Zembo as warming stripes, 1981 to 2011 One stripe for each of 30 complete years at El Zembo, 1981 to 2011. Blue stripes are years cooler than the station's own mean of 13.2 C (55.7 F); red stripes are warmer. The coolest year was 1992, at 12.3 C (54.1 F), and the warmest was 1998, at 14.6 C (58.4 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1981: 12.3 C, -0.9 C from the station mean1982: 13.3 C, +0.1 C from the station mean1983: 13.1 C, 0.0 C from the station mean1984: 12.6 C, -0.5 C from the station mean1985: 12.4 C, -0.7 C from the station mean1986: 12.7 C, -0.5 C from the station mean1987: 12.8 C, -0.3 C from the station mean1988: 12.8 C, -0.4 C from the station mean1989: 12.7 C, -0.5 C from the station mean1990: 12.7 C, -0.5 C from the station mean1991: 13.3 C, +0.2 C from the station mean1992: 12.3 C, -0.9 C from the station mean1993: 12.8 C, -0.4 C from the station mean1994: 13.5 C, +0.3 C from the station mean1995: 14.2 C, +1.0 C from the station mean1996: 13.6 C, +0.4 C from the station mean1997: 13.8 C, +0.6 C from the station mean1998: 14.6 C, +1.5 C from the station mean1999: 13.4 C, +0.2 C from the station mean2000: 13.3 C, +0.1 C from the station mean2001: 13.2 C, 0.0 C from the station mean2002: 13.2 C, 0.0 C from the station mean2003: 13.6 C, +0.4 C from the station mean2004: 13.1 C, -0.1 C from the station mean2005: 13.8 C, +0.7 C from the station mean2006: 13.4 C, +0.2 C from the station mean2007: 13.2 C, +0.1 C from the station mean2009: 13.6 C, +0.5 C from the station mean2010: 12.9 C, -0.3 C from the station mean2011: 13.2 C, 0.0 C from the station mean1981198519901995200020052010
One stripe for each of 30 complete years at El Zembo, 1981 to 2011. Blue stripes are years cooler than the station's own mean of 13.2 C (55.7 F); red stripes are warmer. The coolest year was 1992, at 12.3 C (54.1 F), and the warmest was 1998, at 14.6 C (58.4 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at El Zembo as warming stripes, 1981 to 2011
YearAnnual mean temperatureDifference from the station mean
198112.3 C-0.86 C
198213.3 C+0.11 C
198313.1 C-0.03 C
198412.6 C-0.53 C
198512.4 C-0.74 C
198612.7 C-0.49 C
198712.8 C-0.33 C
198812.8 C-0.40 C
198912.7 C-0.52 C
199012.7 C-0.49 C
199113.3 C+0.17 C
199212.3 C-0.92 C
199312.8 C-0.35 C
199413.5 C+0.31 C
199514.2 C+0.98 C
199613.6 C+0.38 C
199713.8 C+0.60 C
199814.6 C+1.47 C
199913.4 C+0.18 C
200013.3 C+0.10 C
200113.2 C-0.02 C
200213.2 C+0.05 C
200313.6 C+0.38 C
200413.1 C-0.07 C
200513.8 C+0.66 C
200613.4 C+0.23 C
200713.2 C+0.07 C
200913.6 C+0.46 C
201012.9 C-0.32 C
201113.2 C+0.04 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1981 to 2011. In Fahrenheit: 0.5 F (0.1 to 0.9) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at El Zembo
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.1 to 0.5) per decade0.5 F (0.1 to 0.9) per decade1981 to 201130Rise
Mean daily maximum1.0 C (0.5 to 1.4) per decade1.7 F (1.0 to 2.4) per decade1981 to 201130Rise
Mean daily minimum-0.4 C (-0.6 to -0.2) per decade-0.7 F (-1.0 to -0.4) per decade1981 to 201130Fall

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

1980 to 2012
Yearly extremes at El Zembo: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)36.7 C (98.1 F)199831.7 C (89.1 F)33
Coldest night (TNn)-10.0 C (14.0 F)1997-6.1 C (21.0 F)33
Wettest day (Rx1day)125.0 mm (4.9 in)201161.0 mm (2.4 in)33
Wettest five days (Rx5day)207.8 mm (8.2 in)2012110.0 mm (4.3 in)33
Longest dry spell (CDD)120 days199839 days33

Hottest day (TXx)

Hottest day (TXx) at El Zembo by year The hottest day of the year at El Zembo, 1980 to 2012. The record is 36.7 C (98.1 F) in 1998, marked on the chart; the median year is 31.7 C (89.1 F). 2830323436381980199020002010Record: 36.7 C (98.1 F) in 1998
The hottest day of the year at El Zembo, 1980 to 2012. The record is 36.7 C (98.1 F) in 1998, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at El Zembo by year
YearHottest day (TXx)
198030.0 C (86.0 F)
198128.9 C (84.0 F)
198230.0 C (86.0 F)
198331.7 C (89.1 F)
198432.8 C (91.0 F)
198528.9 C (84.0 F)
198631.7 C (89.1 F)
198730.6 C (87.1 F)
198830.6 C (87.1 F)
198931.7 C (89.1 F)
199030.6 C (87.1 F)
199132.8 C (91.0 F)
199228.9 C (84.0 F)
199331.7 C (89.1 F)
199432.8 C (91.0 F)
199535.0 C (95.0 F)
199632.8 C (91.0 F)
199732.8 C (91.0 F)
199836.7 C (98.1 F)
199933.9 C (93.0 F)
200031.7 C (89.1 F)
200132.8 C (91.0 F)
200232.8 C (91.0 F)
200333.9 C (93.0 F)
200430.6 C (87.1 F)
200532.8 C (91.0 F)
200631.7 C (89.1 F)
200731.7 C (89.1 F)
200831.7 C (89.1 F)
200931.7 C (89.1 F)
201031.7 C (89.1 F)
201132.8 C (91.0 F)
201230.0 C (86.0 F)

Coldest night (TNn)

Coldest night (TNn) at El Zembo by year The coldest night of the year at El Zembo, 1980 to 2012. The record is -10.0 C (14.0 F) in 1997, marked on the chart; the median year is -6.1 C (21.0 F). -10-5051980199020002010Record: -10.0 C (14.0 F) in 1997
The coldest night of the year at El Zembo, 1980 to 2012. The record is -10.0 C (14.0 F) in 1997, marked on the chart; the median year is -6.1 C (21.0 F).
Coldest night (TNn) at El Zembo by year
YearColdest night (TNn)
1980-4.4 C (24.1 F)
1981-4.4 C (24.1 F)
1982-5.0 C (23.0 F)
1983-8.3 C (17.1 F)
1984-4.4 C (24.1 F)
1985-8.3 C (17.1 F)
1986-9.4 C (15.1 F)
1987-7.2 C (19.0 F)
1988-9.4 C (15.1 F)
1989-9.4 C (15.1 F)
1990-6.1 C (21.0 F)
1991-0.6 C (30.9 F)
1992-5.0 C (23.0 F)
1993-5.0 C (23.0 F)
1994-6.1 C (21.0 F)
1995-5.0 C (23.0 F)
1996-9.4 C (15.1 F)
1997-10.0 C (14.0 F)
1998-5.0 C (23.0 F)
1999-8.3 C (17.1 F)
2000-8.3 C (17.1 F)
2001-5.0 C (23.0 F)
2002-8.3 C (17.1 F)
2003-9.4 C (15.1 F)
2004-8.3 C (17.1 F)
2005-4.4 C (24.1 F)
2006-9.4 C (15.1 F)
2007-5.0 C (23.0 F)
2008-6.1 C (21.0 F)
2009-7.2 C (19.0 F)
2010-8.3 C (17.1 F)
2011-6.1 C (21.0 F)
20121.7 C (35.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at El Zembo by year The wettest day of the year at El Zembo, 1980 to 2012. The record is 125.0 mm (4.9 in) in 2011, marked on the chart; the median year is 61.0 mm (2.4 in). 2550751001251980199020002010Record: 125.0 mm (4.9 in) in 2011
The wettest day of the year at El Zembo, 1980 to 2012. The record is 125.0 mm (4.9 in) in 2011, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest day (Rx1day) at El Zembo by year
YearWettest day (Rx1day)
198069.9 mm (2.8 in)
198149.8 mm (2.0 in)
198256.4 mm (2.2 in)
198352.1 mm (2.1 in)
198446.0 mm (1.8 in)
198549.3 mm (1.9 in)
198663.2 mm (2.5 in)
198759.9 mm (2.4 in)
198888.9 mm (3.5 in)
198979.0 mm (3.1 in)
199062.0 mm (2.4 in)
199149.8 mm (2.0 in)
199270.9 mm (2.8 in)
199347.8 mm (1.9 in)
199469.9 mm (2.8 in)
199580.8 mm (3.2 in)
199654.1 mm (2.1 in)
199743.9 mm (1.7 in)
199861.0 mm (2.4 in)
199978.0 mm (3.1 in)
200057.4 mm (2.3 in)
200156.4 mm (2.2 in)
200262.5 mm (2.5 in)
200366.8 mm (2.6 in)
200441.9 mm (1.6 in)
200593.5 mm (3.7 in)
200680.8 mm (3.2 in)
200788.9 mm (3.5 in)
200859.9 mm (2.4 in)
200956.4 mm (2.2 in)
201048.3 mm (1.9 in)
2011125.0 mm (4.9 in)
201295.0 mm (3.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at El Zembo by year The wettest five days of the year at El Zembo, 1980 to 2012. The record is 207.8 mm (8.2 in) in 2012, marked on the chart; the median year is 110.0 mm (4.3 in). 501001502002501980199020002010Record: 207.8 mm (8.2 in) in 2012
The wettest five days of the year at El Zembo, 1980 to 2012. The record is 207.8 mm (8.2 in) in 2012, marked on the chart; the median year is 110.0 mm (4.3 in).
Wettest five days (Rx5day) at El Zembo by year
YearWettest five days (Rx5day)
1980145.9 mm (5.7 in)
1981111.8 mm (4.4 in)
1982102.9 mm (4.1 in)
1983109.0 mm (4.3 in)
1984129.0 mm (5.1 in)
198592.3 mm (3.6 in)
198681.6 mm (3.2 in)
198793.5 mm (3.7 in)
1988176.2 mm (6.9 in)
1989149.6 mm (5.9 in)
1990101.2 mm (4.0 in)
1991107.3 mm (4.2 in)
199299.5 mm (3.9 in)
1993131.6 mm (5.2 in)
1994103.7 mm (4.1 in)
1995122.5 mm (4.8 in)
199696.3 mm (3.8 in)
1997110.0 mm (4.3 in)
1998103.0 mm (4.1 in)
1999143.1 mm (5.6 in)
200079.5 mm (3.1 in)
2001121.4 mm (4.8 in)
200297.4 mm (3.8 in)
200382.9 mm (3.3 in)
200464.9 mm (2.6 in)
2005200.4 mm (7.9 in)
2006105.7 mm (4.2 in)
2007149.6 mm (5.9 in)
2008114.9 mm (4.5 in)
2009118.2 mm (4.7 in)
2010133.2 mm (5.2 in)
2011206.2 mm (8.1 in)
2012207.8 mm (8.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at El Zembo by year The longest dry spell of the year at El Zembo, 1980 to 2012. The record is 120 days in 1998, marked on the chart; the median year is 39 days. 0501001501980199020002010Record: 120 days in 1998
The longest dry spell of the year at El Zembo, 1980 to 2012. The record is 120 days in 1998, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at El Zembo by year
YearLongest dry spell (CDD)
198047 days
198136 days
198256 days
198349 days
198458 days
198534 days
198699 days
198762 days
198827 days
198939 days
199032 days
199121 days
199223 days
199347 days
199431 days
199533 days
199641 days
199737 days
1998120 days
199941 days
200035 days
200138 days
200234 days
200371 days
200444 days
200531 days
200622 days
200759 days
200859 days
200924 days
201047 days
201145 days
20127 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.

Frost Dates and Growing Season

30 years with a frost

Across 30 years with a frost, the median last spring frost at El Zembo falls on 15 April and the median first autumn frost on 27 October, which leaves a median of 180 days between them.

Fitted over all years, the growing season changes by -20.4 days per decade at this station.

Frost dates and growing season at El Zembo
MeasureMedian, all yearsEarliest periodRecent period (1981 to 2011)Recent against earliestFitted trend
Last spring frost15 Apriln/a15 Apriln/a+16.7 days per decade
First autumn frost27 Octobern/a27 Octobern/a-3.7 days per decade
Growing days180 daysn/a180 daysn/a-20.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

31 years, 1981 to 2011

A day with at least 60.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 133.0 mm (5.2 in) of rain is expected about once in 100 years.

Rainfall return levels at El Zembo: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years60.2 mm (2.4 in)
5 years75.8 mm (3.0 in)
10 years87.5 mm (3.4 in)
25 years104.1 mm (4.1 in)
50 years117.9 mm (4.6 in)Longer than the 31 years of record
100 years133.0 mm (5.2 in)Longer than the 31 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, 31 years of values from 1981 to 2011.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 125.0 mm (4.9 in) in 2011; 93.5 mm (3.7 in) in 2005; 88.9 mm (3.5 in) in 1988.

Download the Data

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