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Built 2026-10-19 (19 October 2026)

El Chapin Threshold Days by Year (MXN00011124)

8 fixed thresholds counted per year at El Chapin (MXN00011124): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for El Chapin Thresholds

  • El Chapin: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1979 with 131.
  • El Chapin: days with a maximum temperature at or above 90 F (32.2 C) in 35 years, most in 2011 with 74.
  • El Chapin: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 2003 with 39.
  • El Chapin: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 2003 with 15.
  • 8 fixed thresholds have at least one qualifying day at El Chapin.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at El Chapin Days per year at El Chapin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 131 in 1979. 0501001501978: 761979: 1311980: 1191981: 541982: 1141983: 711984: 641985: 491986: 491987: 931988: 901989: 911990: 881991: 831992: 381993: 621994: 741995: 781996: 831997: 801998: 971999: 822000: 792001: 482002: 802003: 792004: 552005: 1172006: 1192007: 762008: 712009: 1262010: 992011: 1252012: 88197819821986199019941998200220062010
Days per year at El Chapin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 131 in 1979.
Days at or above 30 C (86 F) per year at El Chapin
YearDaysDecade average
197876103.5
1979131103.5
198011979.4
19815479.4
198211479.4
19837179.4
19846479.4
19854979.4
19864979.4
19879379.4
19889079.4
19899179.4
19908876.5
19918376.5
19923876.5
19936276.5
19947476.5
19957876.5
19968376.5
19978076.5
19989776.5
19998276.5
20007985
20014885
20028085
20037985
20045585
200511785
200611985
20077685
20087185
200912685
201099104
2011125104
201288104
First to last qualifying date each year at El Chapin For each year, a bar from the first to the last day at El Chapin meeting 30 C (86 F). 1978: 14 March 1978 to 26 August 19781979: 13 March 1979 to 31 December 19791980: 5 January 1980 to 18 October 19801981: 31 March 1981 to 21 September 19811982: 10 March 1982 to 6 October 19821983: 25 March 1983 to 7 October 19831984: 15 March 1984 to 22 October 19841985: 1 March 1985 to 8 October 19851986: 19 February 1986 to 19 November 19861987: 3 April 1987 to 19 September 19871988: 2 April 1988 to 10 November 19881989: 2 April 1989 to 24 July 19891990: 16 March 1990 to 1 December 19901991: 28 March 1991 to 15 September 19911992: 23 March 1992 to 23 September 19921993: 21 March 1993 to 20 October 19931994: 8 March 1994 to 24 October 19941995: 22 March 1995 to 7 November 19951996: 21 February 1996 to 11 August 19961997: 2 March 1997 to 30 September 19971998: 21 March 1998 to 1 August 19981999: 13 January 1999 to 27 September 19992000: 14 February 2000 to 4 October 20002001: 13 March 2001 to 8 June 20012002: 9 March 2002 to 29 June 20022003: 12 February 2003 to 28 June 20032004: 6 March 2004 to 21 October 20042005: 9 February 2005 to 13 December 20052006: 2 February 2006 to 27 October 20062007: 22 February 2007 to 16 October 20072008: 23 February 2008 to 27 June 20082009: 18 February 2009 to 15 October 20092010: 7 March 2010 to 23 November 20102011: 17 February 2011 to 5 October 20112012: 1 March 2012 to 26 October 20121978198319881993199820032008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at El Chapin meeting 30 C (86 F).
First to last qualifying date each year at El Chapin
YearFirst dateLast date
19781978-03-141978-08-26
19791979-03-131979-12-31
19801980-01-051980-10-18
19811981-03-311981-09-21
19821982-03-101982-10-06
19831983-03-251983-10-07
19841984-03-151984-10-22
19851985-03-011985-10-08
19861986-02-191986-11-19
19871987-04-031987-09-19
19881988-04-021988-11-10
19891989-04-021989-07-24
19901990-03-161990-12-01
19911991-03-281991-09-15
19921992-03-231992-09-23
19931993-03-211993-10-20
19941994-03-081994-10-24
19951995-03-221995-11-07
19961996-02-211996-08-11
19971997-03-021997-09-30
19981998-03-211998-08-01
19991999-01-131999-09-27
20002000-02-142000-10-04
20012001-03-132001-06-08
20022002-03-092002-06-29
20032003-02-122003-06-28
20042004-03-062004-10-21
20052005-02-092005-12-13
20062006-02-022006-10-27
20072007-02-222007-10-16
20082008-02-232008-06-27
20092009-02-182009-10-15
20102010-03-072010-11-23
20112011-02-172011-10-05
20122012-03-012012-10-26

Every Fixed Threshold

Fixed thresholds at El Chapin
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days35131197988
35 C (95 F): Days282120114
90 F (32.2 C): Days3574201133
100 F (37.8 C): Days1219802
0 C (32 F): Frost days (min211320101
10 mm (0.39 in): Days with 10 mm or more rain3539200315
25 mm (0.98 in): Days with 25 mm or more rain341520033
50 mm (1.97 in): Days with 50 mm or more rain19520072

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1978.

Download the Data

  • Data for El Chapin 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). Threshold counts are computed by this site.

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